inc/contrib -> inc/lib

184 files changed, 22916 insertions, 0 deletions

diff --git a/inc/lib/Twig/Autoloader.php b/inc/lib/Twig/Autoloader.php
new file mode 100644
index 00000000..a93b8caf
--- /dev/null
+++ b/inc/lib/Twig/Autoloader.php
@@ -0,0 +1,46 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Autoloads Twig classes.
+ *
+ * @package twig
+ * @author  Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Autoloader
+{
+    /**
+     * Registers Twig_Autoloader as an SPL autoloader.
+     */
+    static public function register()
+    {
+        ini_set('unserialize_callback_func', 'spl_autoload_call');
+        spl_autoload_register(array(new self, 'autoload'));
+    }
+
+    /**
+     * Handles autoloading of classes.
+     *
+     * @param  string  $class  A class name.
+     *
+     * @return boolean Returns true if the class has been loaded
+     */
+    static public function autoload($class)
+    {
+        if (0 !== strpos($class, 'Twig')) {
+            return;
+        }
+
+        if (is_file($file = dirname(__FILE__).'/../'.str_replace(array('_', "\0"), array('/', ''), $class).'.php')) {
+            require $file;
+        }
+    }
+}
diff --git a/inc/lib/Twig/Compiler.php b/inc/lib/Twig/Compiler.php
new file mode 100644
index 00000000..db2e8de4
--- /dev/null
+++ b/inc/lib/Twig/Compiler.php
@@ -0,0 +1,219 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Compiles a node to PHP code.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Compiler implements Twig_CompilerInterface
+{
+    protected $lastLine;
+    protected $source;
+    protected $indentation;
+    protected $env;
+
+    /**
+     * Constructor.
+     *
+     * @param Twig_Environment $env The twig environment instance
+     */
+    public function __construct(Twig_Environment $env)
+    {
+        $this->env = $env;
+    }
+
+    /**
+     * Returns the environment instance related to this compiler.
+     *
+     * @return Twig_Environment The environment instance
+     */
+    public function getEnvironment()
+    {
+        return $this->env;
+    }
+
+    /**
+     * Gets the current PHP code after compilation.
+     *
+     * @return string The PHP code
+     */
+    public function getSource()
+    {
+        return $this->source;
+    }
+
+    /**
+     * Compiles a node.
+     *
+     * @param Twig_NodeInterface $node   The node to compile
+     * @param integer            $indent The current indentation
+     *
+     * @return Twig_Compiler The current compiler instance
+     */
+    public function compile(Twig_NodeInterface $node, $indentation = 0)
+    {
+        $this->lastLine = null;
+        $this->source = '';
+        $this->indentation = $indentation;
+
+        $node->compile($this);
+
+        return $this;
+    }
+
+    public function subcompile(Twig_NodeInterface $node, $raw = true)
+    {
+        if (false === $raw) {
+            $this->addIndentation();
+        }
+
+        $node->compile($this);
+
+        return $this;
+    }
+
+    /**
+     * Adds a raw string to the compiled code.
+     *
+     * @param  string $string The string
+     *
+     * @return Twig_Compiler The current compiler instance
+     */
+    public function raw($string)
+    {
+        $this->source .= $string;
+
+        return $this;
+    }
+
+    /**
+     * Writes a string to the compiled code by adding indentation.
+     *
+     * @return Twig_Compiler The current compiler instance
+     */
+    public function write()
+    {
+        $strings = func_get_args();
+        foreach ($strings as $string) {
+            $this->addIndentation();
+            $this->source .= $string;
+        }
+
+        return $this;
+    }
+
+    public function addIndentation()
+    {
+        $this->source .= str_repeat(' ', $this->indentation * 4);
+
+        return $this;
+    }
+
+    /**
+     * Adds a quoted string to the compiled code.
+     *
+     * @param  string $string The string
+     *
+     * @return Twig_Compiler The current compiler instance
+     */
+    public function string($value)
+    {
+        $this->source .= sprintf('"%s"', addcslashes($value, "\0\t\"\$\\"));
+
+        return $this;
+    }
+
+    /**
+     * Returns a PHP representation of a given value.
+     *
+     * @param  mixed $value The value to convert
+     *
+     * @return Twig_Compiler The current compiler instance
+     */
+    public function repr($value)
+    {
+        if (is_int($value) || is_float($value)) {
+            $this->raw($value);
+        } else if (null === $value) {
+            $this->raw('null');
+        } else if (is_bool($value)) {
+            $this->raw($value ? 'true' : 'false');
+        } else if (is_array($value)) {
+            $this->raw('array(');
+            $i = 0;
+            foreach ($value as $key => $value) {
+                if ($i++) {
+                    $this->raw(', ');
+                }
+                $this->repr($key);
+                $this->raw(' => ');
+                $this->repr($value);
+            }
+            $this->raw(')');
+        } else {
+            $this->string($value);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Adds debugging information.
+     *
+     * @param Twig_NodeInterface $node The related twig node
+     *
+     * @return Twig_Compiler The current compiler instance
+     */
+    public function addDebugInfo(Twig_NodeInterface $node)
+    {
+        if ($node->getLine() != $this->lastLine) {
+            $this->lastLine = $node->getLine();
+            $this->write("// line {$node->getLine()}\n");
+        }
+
+        return $this;
+    }
+
+    /**
+     * Indents the generated code.
+     *
+     * @param integer $indent The number of indentation to add
+     *
+     * @return Twig_Compiler The current compiler instance
+     */
+    public function indent($step = 1)
+    {
+        $this->indentation += $step;
+
+        return $this;
+    }
+
+    /**
+     * Outdents the generated code.
+     *
+     * @param integer $indent The number of indentation to remove
+     *
+     * @return Twig_Compiler The current compiler instance
+     */
+    public function outdent($step = 1)
+    {
+        $this->indentation -= $step;
+
+        if ($this->indentation < 0) {
+            throw new Twig_Error('Unable to call outdent() as the indentation would become negative');
+        }
+
+        return $this;
+    }
+}
diff --git a/inc/lib/Twig/CompilerInterface.php b/inc/lib/Twig/CompilerInterface.php
new file mode 100644
index 00000000..0a13edf2
--- /dev/null
+++ b/inc/lib/Twig/CompilerInterface.php
@@ -0,0 +1,35 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Interface implemented by compiler classes.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_CompilerInterface
+{
+    /**
+     * Compiles a node.
+     *
+     * @param  Twig_NodeInterface $node The node to compile
+     *
+     * @return Twig_CompilerInterface The current compiler instance
+     */
+    function compile(Twig_NodeInterface $node);
+
+    /**
+     * Gets the current PHP code after compilation.
+     *
+     * @return string The PHP code
+     */
+    function getSource();
+}
diff --git a/inc/lib/Twig/Environment.php b/inc/lib/Twig/Environment.php
new file mode 100644
index 00000000..b91c80c5
--- /dev/null
+++ b/inc/lib/Twig/Environment.php
@@ -0,0 +1,938 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Stores the Twig configuration.
+ *
+ * @package twig
+ * @author  Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Environment
+{
+    const VERSION = '1.2.0';
+
+    protected $charset;
+    protected $loader;
+    protected $debug;
+    protected $autoReload;
+    protected $cache;
+    protected $lexer;
+    protected $parser;
+    protected $compiler;
+    protected $baseTemplateClass;
+    protected $extensions;
+    protected $parsers;
+    protected $visitors;
+    protected $filters;
+    protected $tests;
+    protected $functions;
+    protected $globals;
+    protected $runtimeInitialized;
+    protected $loadedTemplates;
+    protected $strictVariables;
+    protected $unaryOperators;
+    protected $binaryOperators;
+    protected $templateClassPrefix = '__TwigTemplate_';
+    protected $functionCallbacks;
+    protected $filterCallbacks;
+
+    /**
+     * Constructor.
+     *
+     * Available options:
+     *
+     *  * debug: When set to `true`, the generated templates have a __toString()
+     *           method that you can use to display the generated nodes (default to
+     *           false).
+     *
+     *  * charset: The charset used by the templates (default to utf-8).
+     *
+     *  * base_template_class: The base template class to use for generated
+     *                         templates (default to Twig_Template).
+     *
+     *  * cache: An absolute path where to store the compiled templates, or
+     *           false to disable compilation cache (default)
+     *
+     *  * auto_reload: Whether to reload the template is the original source changed.
+     *                 If you don't provide the auto_reload option, it will be
+     *                 determined automatically base on the debug value.
+     *
+     *  * strict_variables: Whether to ignore invalid variables in templates
+     *                      (default to false).
+     *
+     *  * autoescape: Whether to enable auto-escaping (default to true);
+     *
+     *  * optimizations: A flag that indicates which optimizations to apply
+     *                   (default to -1 which means that all optimizations are enabled;
+     *                   set it to 0 to disable)
+     *
+     * @param Twig_LoaderInterface   $loader  A Twig_LoaderInterface instance
+     * @param array                  $options An array of options
+     */
+    public function __construct(Twig_LoaderInterface $loader = null, $options = array())
+    {
+        if (null !== $loader) {
+            $this->setLoader($loader);
+        }
+
+        $options = array_merge(array(
+            'debug'               => false,
+            'charset'             => 'UTF-8',
+            'base_template_class' => 'Twig_Template',
+            'strict_variables'    => false,
+            'autoescape'          => true,
+            'cache'               => false,
+            'auto_reload'         => null,
+            'optimizations'       => -1,
+        ), $options);
+
+        $this->debug              = (bool) $options['debug'];
+        $this->charset            = $options['charset'];
+        $this->baseTemplateClass  = $options['base_template_class'];
+        $this->autoReload         = null === $options['auto_reload'] ? $this->debug : (bool) $options['auto_reload'];
+        $this->extensions         = array(
+            'core'      => new Twig_Extension_Core(),
+            'escaper'   => new Twig_Extension_Escaper((bool) $options['autoescape']),
+            'optimizer' => new Twig_Extension_Optimizer($options['optimizations']),
+        );
+        $this->strictVariables    = (bool) $options['strict_variables'];
+        $this->runtimeInitialized = false;
+        $this->setCache($options['cache']);
+        $this->functionCallbacks = array();
+        $this->filterCallbacks = array();
+    }
+
+    /**
+     * Gets the base template class for compiled templates.
+     *
+     * @return string The base template class name
+     */
+    public function getBaseTemplateClass()
+    {
+        return $this->baseTemplateClass;
+    }
+
+    /**
+     * Sets the base template class for compiled templates.
+     *
+     * @param string $class The base template class name
+     */
+    public function setBaseTemplateClass($class)
+    {
+        $this->baseTemplateClass = $class;
+    }
+
+    /**
+     * Enables debugging mode.
+     */
+    public function enableDebug()
+    {
+        $this->debug = true;
+    }
+
+    /**
+     * Disables debugging mode.
+     */
+    public function disableDebug()
+    {
+        $this->debug = false;
+    }
+
+    /**
+     * Checks if debug mode is enabled.
+     *
+     * @return Boolean true if debug mode is enabled, false otherwise
+     */
+    public function isDebug()
+    {
+        return $this->debug;
+    }
+
+    /**
+     * Enables the auto_reload option.
+     */
+    public function enableAutoReload()
+    {
+        $this->autoReload = true;
+    }
+
+    /**
+     * Disables the auto_reload option.
+     */
+    public function disableAutoReload()
+    {
+        $this->autoReload = false;
+    }
+
+    /**
+     * Checks if the auto_reload option is enabled.
+     *
+     * @return Boolean true if auto_reload is enabled, false otherwise
+     */
+    public function isAutoReload()
+    {
+        return $this->autoReload;
+    }
+
+    /**
+     * Enables the strict_variables option.
+     */
+    public function enableStrictVariables()
+    {
+        $this->strictVariables = true;
+    }
+
+    /**
+     * Disables the strict_variables option.
+     */
+    public function disableStrictVariables()
+    {
+        $this->strictVariables = false;
+    }
+
+    /**
+     * Checks if the strict_variables option is enabled.
+     *
+     * @return Boolean true if strict_variables is enabled, false otherwise
+     */
+    public function isStrictVariables()
+    {
+        return $this->strictVariables;
+    }
+
+    /**
+     * Gets the cache directory or false if cache is disabled.
+     *
+     * @return string|false
+     */
+    public function getCache()
+    {
+        return $this->cache;
+    }
+
+     /**
+      * Sets the cache directory or false if cache is disabled.
+      *
+      * @param string|false $cache The absolute path to the compiled templates,
+      *                            or false to disable cache
+      */
+    public function setCache($cache)
+    {
+        $this->cache = $cache ? $cache : false;
+    }
+
+    /**
+     * Gets the cache filename for a given template.
+     *
+     * @param string $name The template name
+     *
+     * @return string The cache file name
+     */
+    public function getCacheFilename($name)
+    {
+        if (false === $this->cache) {
+            return false;
+        }
+
+        $class = substr($this->getTemplateClass($name), strlen($this->templateClassPrefix));
+
+        return $this->getCache().'/'.substr($class, 0, 2).'/'.substr($class, 2, 2).'/'.substr($class, 4).'.php';
+    }
+
+    /**
+     * Gets the template class associated with the given string.
+     *
+     * @param string $name The name for which to calculate the template class name
+     *
+     * @return string The template class name
+     */
+    public function getTemplateClass($name)
+    {
+        return $this->templateClassPrefix.md5($this->loader->getCacheKey($name));
+    }
+
+    /**
+     * Gets the template class prefix.
+     *
+     * @return string The template class prefix
+     */
+    public function getTemplateClassPrefix()
+    {
+        return $this->templateClassPrefix;
+    }
+
+    /**
+     * Renders a template.
+     *
+     * @param string $name    The template name
+     * @param array  $context An array of parameters to pass to the template
+     *
+     * @return string The rendered template
+     */
+    public function render($name, array $context = array())
+    {
+        return $this->loadTemplate($name)->render($context);
+    }
+
+    /**
+     * Loads a template by name.
+     *
+     * @param  string  $name  The template name
+     *
+     * @return Twig_TemplateInterface A template instance representing the given template name
+     */
+    public function loadTemplate($name)
+    {
+        $cls = $this->getTemplateClass($name);
+
+        if (isset($this->loadedTemplates[$cls])) {
+            return $this->loadedTemplates[$cls];
+        }
+
+        if (!class_exists($cls, false)) {
+            if (false === $cache = $this->getCacheFilename($name)) {
+                eval('?>'.$this->compileSource($this->loader->getSource($name), $name));
+            } else {
+                if (!is_file($cache) || ($this->isAutoReload() && !$this->loader->isFresh($name, filemtime($cache)))) {
+                    $this->writeCacheFile($cache, $this->compileSource($this->loader->getSource($name), $name));
+                }
+
+                require_once $cache;
+            }
+        }
+
+        if (!$this->runtimeInitialized) {
+            $this->initRuntime();
+        }
+
+        return $this->loadedTemplates[$cls] = new $cls($this);
+    }
+
+    public function resolveTemplate($names)
+    {
+        if (!is_array($names)) {
+            $names = array($names);
+        }
+
+        foreach ($names as $name) {
+            if ($name instanceof Twig_Template) {
+                return $name;
+            }
+
+            try {
+                return $this->loadTemplate($name);
+            } catch (Twig_Error_Loader $e) {
+            }
+        }
+
+        if (1 === count($names)) {
+            throw $e;
+        }
+
+        throw new Twig_Error_Loader(sprintf('Unable to find one of the following templates: "%s".', implode('", "', $names)));
+    }
+
+    /**
+     * Clears the internal template cache.
+     */
+    public function clearTemplateCache()
+    {
+        $this->loadedTemplates = array();
+    }
+
+    /**
+     * Clears the template cache files on the filesystem.
+     */
+    public function clearCacheFiles()
+    {
+        if (false === $this->cache) {
+            return;
+        }
+
+        foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->cache), RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
+            if ($file->isFile()) {
+                @unlink($file->getPathname());
+            }
+        }
+    }
+
+    /**
+     * Gets the Lexer instance.
+     *
+     * @return Twig_LexerInterface A Twig_LexerInterface instance
+     */
+    public function getLexer()
+    {
+        if (null === $this->lexer) {
+            $this->lexer = new Twig_Lexer($this);
+        }
+
+        return $this->lexer;
+    }
+
+    /**
+     * Sets the Lexer instance.
+     *
+     * @param Twig_LexerInterface A Twig_LexerInterface instance
+     */
+    public function setLexer(Twig_LexerInterface $lexer)
+    {
+        $this->lexer = $lexer;
+    }
+
+    /**
+     * Tokenizes a source code.
+     *
+     * @param string $source The template source code
+     * @param string $name   The template name
+     *
+     * @return Twig_TokenStream A Twig_TokenStream instance
+     */
+    public function tokenize($source, $name = null)
+    {
+        return $this->getLexer()->tokenize($source, $name);
+    }
+
+    /**
+     * Gets the Parser instance.
+     *
+     * @return Twig_ParserInterface A Twig_ParserInterface instance
+     */
+    public function getParser()
+    {
+        if (null === $this->parser) {
+            $this->parser = new Twig_Parser($this);
+        }
+
+        return $this->parser;
+    }
+
+    /**
+     * Sets the Parser instance.
+     *
+     * @param Twig_ParserInterface A Twig_ParserInterface instance
+     */
+    public function setParser(Twig_ParserInterface $parser)
+    {
+        $this->parser = $parser;
+    }
+
+    /**
+     * Parses a token stream.
+     *
+     * @param Twig_TokenStream $tokens A Twig_TokenStream instance
+     *
+     * @return Twig_Node_Module A Node tree
+     */
+    public function parse(Twig_TokenStream $tokens)
+    {
+        return $this->getParser()->parse($tokens);
+    }
+
+    /**
+     * Gets the Compiler instance.
+     *
+     * @return Twig_CompilerInterface A Twig_CompilerInterface instance
+     */
+    public function getCompiler()
+    {
+        if (null === $this->compiler) {
+            $this->compiler = new Twig_Compiler($this);
+        }
+
+        return $this->compiler;
+    }
+
+    /**
+     * Sets the Compiler instance.
+     *
+     * @param Twig_CompilerInterface $compiler A Twig_CompilerInterface instance
+     */
+    public function setCompiler(Twig_CompilerInterface $compiler)
+    {
+        $this->compiler = $compiler;
+    }
+
+    /**
+     * Compiles a Node.
+     *
+     * @param Twig_NodeInterface $node A Twig_NodeInterface instance
+     *
+     * @return string The compiled PHP source code
+     */
+    public function compile(Twig_NodeInterface $node)
+    {
+        return $this->getCompiler()->compile($node)->getSource();
+    }
+
+    /**
+     * Compiles a template source code.
+     *
+     * @param string $source The template source code
+     * @param string $name   The template name
+     *
+     * @return string The compiled PHP source code
+     */
+    public function compileSource($source, $name = null)
+    {
+        try {
+            return $this->compile($this->parse($this->tokenize($source, $name)));
+        } catch (Twig_Error $e) {
+            $e->setTemplateFile($name);
+            throw $e;
+        } catch (Exception $e) {
+            throw new Twig_Error_Runtime(sprintf('An exception has been thrown during the compilation of a template ("%s").', $e->getMessage()), -1, $name, $e);
+        }
+    }
+
+    /**
+     * Sets the Loader instance.
+     *
+     * @param Twig_LoaderInterface $loader A Twig_LoaderInterface instance
+     */
+    public function setLoader(Twig_LoaderInterface $loader)
+    {
+        $this->loader = $loader;
+    }
+
+    /**
+     * Gets the Loader instance.
+     *
+     * @return Twig_LoaderInterface A Twig_LoaderInterface instance
+     */
+    public function getLoader()
+    {
+        return $this->loader;
+    }
+
+    /**
+     * Sets the default template charset.
+     *
+     * @param string $charset The default charset
+     */
+    public function setCharset($charset)
+    {
+        $this->charset = $charset;
+    }
+
+    /**
+     * Gets the default template charset.
+     *
+     * @return string The default charset
+     */
+    public function getCharset()
+    {
+        return $this->charset;
+    }
+
+    /**
+     * Initializes the runtime environment.
+     */
+    public function initRuntime()
+    {
+        $this->runtimeInitialized = true;
+
+        foreach ($this->getExtensions() as $extension) {
+            $extension->initRuntime($this);
+        }
+    }
+
+    /**
+     * Returns true if the given extension is registered.
+     *
+     * @param string $name The extension name
+     *
+     * @return Boolean Whether the extension is registered or not
+     */
+    public function hasExtension($name)
+    {
+        return isset($this->extensions[$name]);
+    }
+
+    /**
+     * Gets an extension by name.
+     *
+     * @param string $name The extension name
+     *
+     * @return Twig_ExtensionInterface A Twig_ExtensionInterface instance
+     */
+    public function getExtension($name)
+    {
+        if (!isset($this->extensions[$name])) {
+            throw new Twig_Error_Runtime(sprintf('The "%s" extension is not enabled.', $name));
+        }
+
+        return $this->extensions[$name];
+    }
+
+    /**
+     * Registers an extension.
+     *
+     * @param Twig_ExtensionInterface $extension A Twig_ExtensionInterface instance
+     */
+    public function addExtension(Twig_ExtensionInterface $extension)
+    {
+        $this->extensions[$extension->getName()] = $extension;
+    }
+
+    /**
+     * Removes an extension by name.
+     *
+     * @param string $name The extension name
+     */
+    public function removeExtension($name)
+    {
+        unset($this->extensions[$name]);
+    }
+
+    /**
+     * Registers an array of extensions.
+     *
+     * @param array $extensions An array of extensions
+     */
+    public function setExtensions(array $extensions)
+    {
+        foreach ($extensions as $extension) {
+            $this->addExtension($extension);
+        }
+    }
+
+    /**
+     * Returns all registered extensions.
+     *
+     * @return array An array of extensions
+     */
+    public function getExtensions()
+    {
+        return $this->extensions;
+    }
+
+    /**
+     * Registers a Token Parser.
+     *
+     * @param Twig_TokenParserInterface $parser A Twig_TokenParserInterface instance
+     */
+    public function addTokenParser(Twig_TokenParserInterface $parser)
+    {
+        if (null === $this->parsers) {
+            $this->getTokenParsers();
+        }
+
+        $this->parsers->addTokenParser($parser);
+    }
+
+    /**
+     * Gets the registered Token Parsers.
+     *
+     * @return Twig_TokenParserInterface[] An array of Twig_TokenParserInterface instances
+     */
+    public function getTokenParsers()
+    {
+        if (null === $this->parsers) {
+            $this->parsers = new Twig_TokenParserBroker;
+            foreach ($this->getExtensions() as $extension) {
+                $parsers = $extension->getTokenParsers();
+                foreach($parsers as $parser) {
+                    if ($parser instanceof Twig_TokenParserInterface) {
+                        $this->parsers->addTokenParser($parser);
+                    } else if ($parser instanceof Twig_TokenParserBrokerInterface) {
+                        $this->parsers->addTokenParserBroker($parser);
+                    } else {
+                        throw new Twig_Error_Runtime('getTokenParsers() must return an array of Twig_TokenParserInterface or Twig_TokenParserBrokerInterface instances');
+                    }
+                }
+            }
+        }
+
+        return $this->parsers;
+    }
+
+    /**
+     * Registers a Node Visitor.
+     *
+     * @param Twig_NodeVisitorInterface $visitor A Twig_NodeVisitorInterface instance
+     */
+    public function addNodeVisitor(Twig_NodeVisitorInterface $visitor)
+    {
+        if (null === $this->visitors) {
+            $this->getNodeVisitors();
+        }
+
+        $this->visitors[] = $visitor;
+    }
+
+    /**
+     * Gets the registered Node Visitors.
+     *
+     * @return Twig_NodeVisitorInterface[] An array of Twig_NodeVisitorInterface instances
+     */
+    public function getNodeVisitors()
+    {
+        if (null === $this->visitors) {
+            $this->visitors = array();
+            foreach ($this->getExtensions() as $extension) {
+                $this->visitors = array_merge($this->visitors, $extension->getNodeVisitors());
+            }
+        }
+
+        return $this->visitors;
+    }
+
+    /**
+     * Registers a Filter.
+     *
+     * @param string               $name    The filter name
+     * @param Twig_FilterInterface $visitor A Twig_FilterInterface instance
+     */
+    public function addFilter($name, Twig_FilterInterface $filter)
+    {
+        if (null === $this->filters) {
+            $this->loadFilters();
+        }
+
+        $this->filters[$name] = $filter;
+    }
+
+    /**
+     * Get a filter by name.
+     *
+     * Subclasses may override this method and load filters differently;
+     * so no list of filters is available.
+     *
+     * @param string $name The filter name
+     *
+     * @return Twig_Filter|false A Twig_Filter instance or false if the filter does not exists
+     */
+    public function getFilter($name)
+    {
+        if (null === $this->filters) {
+            $this->loadFilters();
+        }
+
+        if (isset($this->filters[$name])) {
+            return $this->filters[$name];
+        }
+
+        foreach ($this->filterCallbacks as $callback) {
+            if (false !== $filter = call_user_func($callback, $name)) {
+                return $filter;
+            }
+        }
+
+        return false;
+    }
+
+    public function registerUndefinedFilterCallback($callable)
+    {
+        $this->filterCallbacks[] = $callable;
+    }
+
+    /**
+     * Gets the registered Filters.
+     *
+     * @return Twig_FilterInterface[] An array of Twig_FilterInterface instances
+     */
+    protected function loadFilters()
+    {
+        $this->filters = array();
+        foreach ($this->getExtensions() as $extension) {
+            $this->filters = array_merge($this->filters, $extension->getFilters());
+        }
+    }
+
+    /**
+     * Registers a Test.
+     *
+     * @param string             $name    The test name
+     * @param Twig_TestInterface $visitor A Twig_TestInterface instance
+     */
+    public function addTest($name, Twig_TestInterface $test)
+    {
+        if (null === $this->tests) {
+            $this->getTests();
+        }
+
+        $this->tests[$name] = $test;
+    }
+
+    /**
+     * Gets the registered Tests.
+     *
+     * @return Twig_TestInterface[] An array of Twig_TestInterface instances
+     */
+    public function getTests()
+    {
+        if (null === $this->tests) {
+            $this->tests = array();
+            foreach ($this->getExtensions() as $extension) {
+                $this->tests = array_merge($this->tests, $extension->getTests());
+            }
+        }
+
+        return $this->tests;
+    }
+
+    /**
+     * Registers a Function.
+     *
+     * @param string                 $name     The function name
+     * @param Twig_FunctionInterface $function A Twig_FunctionInterface instance
+     */
+    public function addFunction($name, Twig_FunctionInterface $function)
+    {
+        if (null === $this->functions) {
+            $this->loadFunctions();
+        }
+
+        $this->functions[$name] = $function;
+    }
+
+    /**
+     * Get a function by name.
+     *
+     * Subclasses may override this method and load functions differently;
+     * so no list of functions is available.
+     *
+     * @param string $name function name
+     *
+     * @return Twig_Function|false A Twig_Function instance or false if the function does not exists
+     */
+    public function getFunction($name)
+    {
+        if (null === $this->functions) {
+            $this->loadFunctions();
+        }
+
+        if (isset($this->functions[$name])) {
+            return $this->functions[$name];
+        }
+
+        foreach ($this->functionCallbacks as $callback) {
+            if (false !== $function = call_user_func($callback, $name)) {
+                return $function;
+            }
+        }
+
+        return false;
+    }
+
+    public function registerUndefinedFunctionCallback($callable)
+    {
+        $this->functionCallbacks[] = $callable;
+    }
+
+    protected function loadFunctions()
+    {
+        $this->functions = array();
+        foreach ($this->getExtensions() as $extension) {
+            $this->functions = array_merge($this->functions, $extension->getFunctions());
+        }
+    }
+
+    /**
+     * Registers a Global.
+     *
+     * @param string $name  The global name
+     * @param mixed  $value The global value
+     */
+    public function addGlobal($name, $value)
+    {
+        if (null === $this->globals) {
+            $this->getGlobals();
+        }
+
+        $this->globals[$name] = $value;
+    }
+
+    /**
+     * Gets the registered Globals.
+     *
+     * @return array An array of globals
+     */
+    public function getGlobals()
+    {
+        if (null === $this->globals) {
+            $this->globals = array();
+            foreach ($this->getExtensions() as $extension) {
+                $this->globals = array_merge($this->globals, $extension->getGlobals());
+            }
+        }
+
+        return $this->globals;
+    }
+
+    /**
+     * Gets the registered unary Operators.
+     *
+     * @return array An array of unary operators
+     */
+    public function getUnaryOperators()
+    {
+        if (null === $this->unaryOperators) {
+            $this->initOperators();
+        }
+
+        return $this->unaryOperators;
+    }
+
+    /**
+     * Gets the registered binary Operators.
+     *
+     * @return array An array of binary operators
+     */
+    public function getBinaryOperators()
+    {
+        if (null === $this->binaryOperators) {
+            $this->initOperators();
+        }
+
+        return $this->binaryOperators;
+    }
+
+    protected function initOperators()
+    {
+        $this->unaryOperators = array();
+        $this->binaryOperators = array();
+        foreach ($this->getExtensions() as $extension) {
+            $operators = $extension->getOperators();
+
+            if (!$operators) {
+                continue;
+            }
+
+            if (2 !== count($operators)) {
+                throw new InvalidArgumentException(sprintf('"%s::getOperators()" does not return a valid operators array.', get_class($extension)));
+            }
+
+            $this->unaryOperators = array_merge($this->unaryOperators, $operators[0]);
+            $this->binaryOperators = array_merge($this->binaryOperators, $operators[1]);
+        }
+    }
+
+    protected function writeCacheFile($file, $content)
+    {
+        if (!is_dir(dirname($file))) {
+            mkdir(dirname($file), 0777, true);
+        }
+
+        $tmpFile = tempnam(dirname($file), basename($file));
+        if (false !== @file_put_contents($tmpFile, $content)) {
+            // rename does not work on Win32 before 5.2.6
+            if (@rename($tmpFile, $file) || (@copy($tmpFile, $file) && unlink($tmpFile))) {
+                chmod($file, 0644);
+
+                return;
+            }
+        }
+
+        throw new Twig_Error_Runtime(sprintf('Failed to write cache file "%s".', $file));
+    }
+}
diff --git a/inc/lib/Twig/Error.php b/inc/lib/Twig/Error.php
new file mode 100644
index 00000000..ed0836c4
--- /dev/null
+++ b/inc/lib/Twig/Error.php
@@ -0,0 +1,195 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Twig base exception.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Error extends Exception
+{
+    protected $lineno;
+    protected $filename;
+    protected $rawMessage;
+    protected $previous;
+
+    /**
+     * Constructor.
+     *
+     * @param string    $message  The error message
+     * @param integer   $lineno   The template line where the error occurred
+     * @param string    $filename The template file name where the error occurred
+     * @param Exception $previous The previous exception
+     */
+    public function __construct($message, $lineno = -1, $filename = null, Exception $previous = null)
+    {
+        if (-1 === $lineno || null === $filename) {
+            list($lineno, $filename) = $this->findTemplateInfo(null !== $previous ? $previous : $this, $lineno, $filename);
+        }
+
+        $this->lineno = $lineno;
+        $this->filename = $filename;
+        $this->rawMessage = $message;
+
+        $this->updateRepr();
+
+        if (version_compare(PHP_VERSION, '5.3.0', '<')) {
+            $this->previous = $previous;
+            parent::__construct($this->message);
+        } else {
+            parent::__construct($this->message, 0, $previous);
+        }
+    }
+
+    /**
+     * Gets the raw message.
+     *
+     * @return string The raw message
+     */
+    public function getRawMessage()
+    {
+        return $this->rawMessage;
+    }
+
+    /**
+     * Gets the filename where the error occurred.
+     *
+     * @return string The filename
+     */
+    public function getTemplateFile()
+    {
+        return $this->filename;
+    }
+
+    /**
+     * Sets the filename where the error occurred.
+     *
+     * @param string $filename The filename
+     */
+    public function setTemplateFile($filename)
+    {
+        $this->filename = $filename;
+
+        $this->updateRepr();
+    }
+
+    /**
+     * Gets the template line where the error occurred.
+     *
+     * @return integer The template line
+     */
+    public function getTemplateLine()
+    {
+        return $this->lineno;
+    }
+
+    /**
+     * Sets the template line where the error occurred.
+     *
+     * @param integer $lineno The template line
+     */
+    public function setTemplateLine($lineno)
+    {
+        $this->lineno = $lineno;
+
+        $this->updateRepr();
+    }
+
+    /**
+     * For PHP < 5.3.0, provides access to the getPrevious() method.
+     *
+     * @param  string $method    The method name
+     * @param  array  $arguments The parameters to be passed to the method
+     *
+     * @return Exception The previous exception or null
+     */
+    public function __call($method, $arguments)
+    {
+        if ('getprevious' == strtolower($method)) {
+            return $this->previous;
+        }
+
+        throw new BadMethodCallException(sprintf('Method "Twig_Error::%s()" does not exist.', $method));
+    }
+
+    protected function updateRepr()
+    {
+        $this->message = $this->rawMessage;
+
+        $dot = false;
+        if ('.' === substr($this->message, -1)) {
+            $this->message = substr($this->message, 0, -1);
+            $dot = true;
+        }
+
+        if (null !== $this->filename) {
+            $this->message .= sprintf(' in %s', json_encode($this->filename));
+        }
+
+        if ($this->lineno >= 0) {
+            $this->message .= sprintf(' at line %d', $this->lineno);
+        }
+
+        if ($dot) {
+            $this->message .= '.';
+        }
+    }
+
+    protected function findTemplateInfo(Exception $e, $currentLine, $currentFile)
+    {
+        if (!function_exists('token_get_all')) {
+            return array($currentLine, $currentFile);
+        }
+
+        $traces = $e->getTrace();
+        foreach ($traces as $i => $trace) {
+            if (!isset($trace['class']) || 'Twig_Template' === $trace['class']) {
+                continue;
+            }
+
+            $r = new ReflectionClass($trace['class']);
+            if (!$r->implementsInterface('Twig_TemplateInterface')) {
+                continue;
+            }
+
+            if (!is_file($r->getFilename())) {
+                // probably an eval()'d code
+                return array($currentLine, $currentFile);
+            }
+
+            if (0 === $i) {
+                $line = $e->getLine();
+            } else {
+                $line = isset($traces[$i - 1]['line']) ? $traces[$i - 1]['line'] : -log(0);
+            }
+
+            $tokens = token_get_all(file_get_contents($r->getFilename()));
+            $templateline = -1;
+            $template = null;
+            foreach ($tokens as $token) {
+                if (isset($token[2]) && $token[2] >= $line) {
+                    return array($templateline, $template);
+                }
+
+                if (T_COMMENT === $token[0] && null === $template && preg_match('#/\* +(.+) +\*/#', $token[1], $match)) {
+                    $template = $match[1];
+                } elseif (T_COMMENT === $token[0] && preg_match('#^//\s*line (\d+)\s*$#', $token[1], $match)) {
+                    $templateline = $match[1];
+                }
+            }
+
+            return array($currentLine, $template);
+        }
+
+        return array($currentLine, $currentFile);
+    }
+}
diff --git a/inc/lib/Twig/Error/Loader.php b/inc/lib/Twig/Error/Loader.php
new file mode 100644
index 00000000..418a7760
--- /dev/null
+++ b/inc/lib/Twig/Error/Loader.php
@@ -0,0 +1,20 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Exception thrown when an error occurs during template loading.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Error_Loader extends Twig_Error
+{
+}
diff --git a/inc/lib/Twig/Error/Runtime.php b/inc/lib/Twig/Error/Runtime.php
new file mode 100644
index 00000000..8a387fa8
--- /dev/null
+++ b/inc/lib/Twig/Error/Runtime.php
@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Exception thrown when an error occurs at runtime.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Error_Runtime extends Twig_Error
+{
+}
diff --git a/inc/lib/Twig/Error/Syntax.php b/inc/lib/Twig/Error/Syntax.php
new file mode 100644
index 00000000..a2650c36
--- /dev/null
+++ b/inc/lib/Twig/Error/Syntax.php
@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Exception thrown when a syntax error occurs during lexing or parsing of a template.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Error_Syntax extends Twig_Error
+{
+}
diff --git a/inc/lib/Twig/ExpressionParser.php b/inc/lib/Twig/ExpressionParser.php
new file mode 100644
index 00000000..b4fc5d5d
--- /dev/null
+++ b/inc/lib/Twig/ExpressionParser.php
@@ -0,0 +1,382 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Parses expressions.
+ *
+ * This parser implements a "Precedence climbing" algorithm.
+ *
+ * @see http://www.engr.mun.ca/~theo/Misc/exp_parsing.htm
+ * @see http://en.wikipedia.org/wiki/Operator-precedence_parser
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_ExpressionParser
+{
+    const OPERATOR_LEFT = 1;
+    const OPERATOR_RIGHT = 2;
+
+    protected $parser;
+    protected $unaryOperators;
+    protected $binaryOperators;
+
+    public function __construct(Twig_Parser $parser, array $unaryOperators, array $binaryOperators)
+    {
+        $this->parser = $parser;
+        $this->unaryOperators = $unaryOperators;
+        $this->binaryOperators = $binaryOperators;
+    }
+
+    public function parseExpression($precedence = 0)
+    {
+        $expr = $this->getPrimary();
+        $token = $this->parser->getCurrentToken();
+        while ($this->isBinary($token) && $this->binaryOperators[$token->getValue()]['precedence'] >= $precedence) {
+            $op = $this->binaryOperators[$token->getValue()];
+            $this->parser->getStream()->next();
+
+            if (isset($op['callable'])) {
+                $expr = call_user_func($op['callable'], $this->parser, $expr);
+            } else {
+                $expr1 = $this->parseExpression(self::OPERATOR_LEFT === $op['associativity'] ? $op['precedence'] + 1 : $op['precedence']);
+                $class = $op['class'];
+                $expr = new $class($expr, $expr1, $token->getLine());
+            }
+
+            $token = $this->parser->getCurrentToken();
+        }
+
+        if (0 === $precedence) {
+            return $this->parseConditionalExpression($expr);
+        }
+
+        return $expr;
+    }
+
+    protected function getPrimary()
+    {
+        $token = $this->parser->getCurrentToken();
+
+        if ($this->isUnary($token)) {
+            $operator = $this->unaryOperators[$token->getValue()];
+            $this->parser->getStream()->next();
+            $expr = $this->parseExpression($operator['precedence']);
+            $class = $operator['class'];
+
+            return $this->parsePostfixExpression(new $class($expr, $token->getLine()));
+        } elseif ($token->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
+            $this->parser->getStream()->next();
+            $expr = $this->parseExpression();
+            $this->parser->getStream()->expect(Twig_Token::PUNCTUATION_TYPE, ')', 'An opened parenthesis is not properly closed');
+
+            return $this->parsePostfixExpression($expr);
+        }
+
+        return $this->parsePrimaryExpression();
+    }
+
+    protected function parseConditionalExpression($expr)
+    {
+        while ($this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, '?')) {
+            $this->parser->getStream()->next();
+            $expr2 = $this->parseExpression();
+            $this->parser->getStream()->expect(Twig_Token::PUNCTUATION_TYPE, ':', 'The ternary operator must have a default value');
+            $expr3 = $this->parseExpression();
+
+            $expr = new Twig_Node_Expression_Conditional($expr, $expr2, $expr3, $this->parser->getCurrentToken()->getLine());
+        }
+
+        return $expr;
+    }
+
+    protected function isUnary(Twig_Token $token)
+    {
+        return $token->test(Twig_Token::OPERATOR_TYPE) && isset($this->unaryOperators[$token->getValue()]);
+    }
+
+    protected function isBinary(Twig_Token $token)
+    {
+        return $token->test(Twig_Token::OPERATOR_TYPE) && isset($this->binaryOperators[$token->getValue()]);
+    }
+
+    public function parsePrimaryExpression()
+    {
+        $token = $this->parser->getCurrentToken();
+        switch ($token->getType()) {
+            case Twig_Token::NAME_TYPE:
+                $this->parser->getStream()->next();
+                switch ($token->getValue()) {
+                    case 'true':
+                    case 'TRUE':
+                        $node = new Twig_Node_Expression_Constant(true, $token->getLine());
+                        break;
+
+                    case 'false':
+                    case 'FALSE':
+                        $node = new Twig_Node_Expression_Constant(false, $token->getLine());
+                        break;
+
+                    case 'none':
+                    case 'NONE':
+                    case 'null':
+                    case 'NULL':
+                        $node = new Twig_Node_Expression_Constant(null, $token->getLine());
+                        break;
+
+                    default:
+                        if ('(' === $this->parser->getCurrentToken()->getValue()) {
+                            $node = $this->getFunctionNode($token->getValue(), $token->getLine());
+                        } else {
+                            $node = new Twig_Node_Expression_Name($token->getValue(), $token->getLine());
+                        }
+                }
+                break;
+
+            case Twig_Token::NUMBER_TYPE:
+            case Twig_Token::STRING_TYPE:
+                $this->parser->getStream()->next();
+                $node = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine());
+                break;
+
+            default:
+                if ($token->test(Twig_Token::PUNCTUATION_TYPE, '[')) {
+                    $node = $this->parseArrayExpression();
+                } elseif ($token->test(Twig_Token::PUNCTUATION_TYPE, '{')) {
+                    $node = $this->parseHashExpression();
+                } else {
+                    throw new Twig_Error_Syntax(sprintf('Unexpected token "%s" of value "%s"', Twig_Token::typeToEnglish($token->getType(), $token->getLine()), $token->getValue()), $token->getLine());
+                }
+        }
+
+        return $this->parsePostfixExpression($node);
+    }
+
+    public function parseArrayExpression()
+    {
+        $stream = $this->parser->getStream();
+        $stream->expect(Twig_Token::PUNCTUATION_TYPE, '[', 'An array element was expected');
+        $elements = array();
+        while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) {
+            if (!empty($elements)) {
+                $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'An array element must be followed by a comma');
+
+                // trailing ,?
+                if ($stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) {
+                    break;
+                }
+            }
+
+            $elements[] = $this->parseExpression();
+        }
+        $stream->expect(Twig_Token::PUNCTUATION_TYPE, ']', 'An opened array is not properly closed');
+
+        return new Twig_Node_Expression_Array($elements, $stream->getCurrent()->getLine());
+    }
+
+    public function parseHashExpression()
+    {
+        $stream = $this->parser->getStream();
+        $stream->expect(Twig_Token::PUNCTUATION_TYPE, '{', 'A hash element was expected');
+        $elements = array();
+        while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, '}')) {
+            if (!empty($elements)) {
+                $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'A hash value must be followed by a comma');
+
+                // trailing ,?
+                if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '}')) {
+                    break;
+                }
+            }
+
+            if (!$stream->test(Twig_Token::STRING_TYPE) && !$stream->test(Twig_Token::NUMBER_TYPE)) {
+                $current = $stream->getCurrent();
+                throw new Twig_Error_Syntax(sprintf('A hash key must be a quoted string or a number (unexpected token "%s" of value "%s"', Twig_Token::typeToEnglish($current->getType(), $current->getLine()), $current->getValue()), $current->getLine());
+            }
+
+            $key = $stream->next()->getValue();
+            $stream->expect(Twig_Token::PUNCTUATION_TYPE, ':', 'A hash key must be followed by a colon (:)');
+            $elements[$key] = $this->parseExpression();
+        }
+        $stream->expect(Twig_Token::PUNCTUATION_TYPE, '}', 'An opened hash is not properly closed');
+
+        return new Twig_Node_Expression_Array($elements, $stream->getCurrent()->getLine());
+    }
+
+    public function parsePostfixExpression($node)
+    {
+        while (true) {
+            $token = $this->parser->getCurrentToken();
+            if ($token->getType() == Twig_Token::PUNCTUATION_TYPE) {
+                if ('.' == $token->getValue() || '[' == $token->getValue()) {
+                    $node = $this->parseSubscriptExpression($node);
+                } elseif ('|' == $token->getValue()) {
+                    $node = $this->parseFilterExpression($node);
+                } else {
+                    break;
+                }
+            } else {
+                break;
+            }
+        }
+
+        return $node;
+    }
+
+    public function getFunctionNode($name, $line)
+    {
+        $args = $this->parseArguments();
+        switch ($name) {
+            case 'parent':
+                if (!count($this->parser->getBlockStack())) {
+                    throw new Twig_Error_Syntax('Calling "parent" outside a block is forbidden', $line);
+                }
+
+                if (!$this->parser->getParent()) {
+                    throw new Twig_Error_Syntax('Calling "parent" on a template that does not extend another one is forbidden', $line);
+                }
+
+                return new Twig_Node_Expression_Parent($this->parser->peekBlockStack(), $line);
+            case 'block':
+                return new Twig_Node_Expression_BlockReference($args->getNode(0), false, $line);
+            case 'attribute':
+                if (count($args) < 2) {
+                    throw new Twig_Error_Syntax('The "attribute" function takes at least two arguments (the variable and the attribute)', $line);
+                }
+
+                return new Twig_Node_Expression_GetAttr($args->getNode(0), $args->getNode(1), count($args) > 2 ? $args->getNode(2) : new Twig_Node_Expression_Array(array(), $line), Twig_TemplateInterface::ANY_CALL, $line);
+            default:
+                if (null !== $alias = $this->parser->getImportedFunction($name)) {
+                    return new Twig_Node_Expression_GetAttr($alias['node'], new Twig_Node_Expression_Constant($alias['name'], $line), $args, Twig_TemplateInterface::METHOD_CALL, $line);
+                }
+
+                return new Twig_Node_Expression_Function($name, $args, $line);
+        }
+    }
+
+    public function parseSubscriptExpression($node)
+    {
+        $token = $this->parser->getStream()->next();
+        $lineno = $token->getLine();
+        $arguments = new Twig_Node();
+        $type = Twig_TemplateInterface::ANY_CALL;
+        if ($token->getValue() == '.') {
+            $token = $this->parser->getStream()->next();
+            if (
+                $token->getType() == Twig_Token::NAME_TYPE
+                ||
+                $token->getType() == Twig_Token::NUMBER_TYPE
+                ||
+                ($token->getType() == Twig_Token::OPERATOR_TYPE && preg_match(Twig_Lexer::REGEX_NAME, $token->getValue()))
+            ) {
+                $arg = new Twig_Node_Expression_Constant($token->getValue(), $lineno);
+
+                if ($this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
+                    $type = Twig_TemplateInterface::METHOD_CALL;
+                    $arguments = $this->parseArguments();
+                } else {
+                    $arguments = new Twig_Node();
+                }
+            } else {
+                throw new Twig_Error_Syntax('Expected name or number', $lineno);
+            }
+        } else {
+            $type = Twig_TemplateInterface::ARRAY_CALL;
+
+            $arg = $this->parseExpression();
+            $this->parser->getStream()->expect(Twig_Token::PUNCTUATION_TYPE, ']');
+        }
+
+        return new Twig_Node_Expression_GetAttr($node, $arg, $arguments, $type, $lineno);
+    }
+
+    public function parseFilterExpression($node)
+    {
+        $this->parser->getStream()->next();
+
+        return $this->parseFilterExpressionRaw($node);
+    }
+
+    public function parseFilterExpressionRaw($node, $tag = null)
+    {
+        while (true) {
+            $token = $this->parser->getStream()->expect(Twig_Token::NAME_TYPE);
+
+            $name = new Twig_Node_Expression_Constant($token->getValue(), $token->getLine());
+            if (!$this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
+                $arguments = new Twig_Node();
+            } else {
+                $arguments = $this->parseArguments();
+            }
+
+            $node = new Twig_Node_Expression_Filter($node, $name, $arguments, $token->getLine(), $tag);
+
+            if (!$this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, '|')) {
+                break;
+            }
+
+            $this->parser->getStream()->next();
+        }
+
+        return $node;
+    }
+
+    public function parseArguments()
+    {
+        $args = array();
+        $stream = $this->parser->getStream();
+
+        $stream->expect(Twig_Token::PUNCTUATION_TYPE, '(', 'A list of arguments must be opened by a parenthesis');
+        while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ')')) {
+            if (!empty($args)) {
+                $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'Arguments must be separated by a comma');
+            }
+            $args[] = $this->parseExpression();
+        }
+        $stream->expect(Twig_Token::PUNCTUATION_TYPE, ')', 'A list of arguments must be closed by a parenthesis');
+
+        return new Twig_Node($args);
+    }
+
+    public function parseAssignmentExpression()
+    {
+        $targets = array();
+        while (true) {
+            $token = $this->parser->getStream()->expect(Twig_Token::NAME_TYPE, null, 'Only variables can be assigned to');
+            if (in_array($token->getValue(), array('true', 'false', 'none'))) {
+                throw new Twig_Error_Syntax(sprintf('You cannot assign a value to "%s"', $token->getValue()), $token->getLine());
+            }
+            $targets[] = new Twig_Node_Expression_AssignName($token->getValue(), $token->getLine());
+
+            if (!$this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, ',')) {
+                break;
+            }
+            $this->parser->getStream()->next();
+        }
+
+        return new Twig_Node($targets);
+    }
+
+    public function parseMultitargetExpression()
+    {
+        $targets = array();
+        while (true) {
+            $targets[] = $this->parseExpression();
+            if (!$this->parser->getStream()->test(Twig_Token::PUNCTUATION_TYPE, ',')) {
+                break;
+            }
+            $this->parser->getStream()->next();
+        }
+
+        return new Twig_Node($targets);
+    }
+}
diff --git a/inc/lib/Twig/Extension.php b/inc/lib/Twig/Extension.php
new file mode 100644
index 00000000..ac289cb4
--- /dev/null
+++ b/inc/lib/Twig/Extension.php
@@ -0,0 +1,93 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+abstract class Twig_Extension implements Twig_ExtensionInterface
+{
+    /**
+     * Initializes the runtime environment.
+     *
+     * This is where you can load some file that contains filter functions for instance.
+     *
+     * @param Twig_Environment $environment The current Twig_Environment instance
+     */
+    public function initRuntime(Twig_Environment $environment)
+    {
+    }
+
+    /**
+     * Returns the token parser instances to add to the existing list.
+     *
+     * @return array An array of Twig_TokenParserInterface or Twig_TokenParserBrokerInterface instances
+     */
+    public function getTokenParsers()
+    {
+        return array();
+    }
+
+    /**
+     * Returns the node visitor instances to add to the existing list.
+     *
+     * @return array An array of Twig_NodeVisitorInterface instances
+     */
+    public function getNodeVisitors()
+    {
+        return array();
+    }
+
+    /**
+     * Returns a list of filters to add to the existing list.
+     *
+     * @return array An array of filters
+     */
+    public function getFilters()
+    {
+        return array();
+    }
+
+    /**
+     * Returns a list of tests to add to the existing list.
+     *
+     * @return array An array of tests
+     */
+    public function getTests()
+    {
+        return array();
+    }
+
+    /**
+     * Returns a list of functions to add to the existing list.
+     *
+     * @return array An array of functions
+     */
+    public function getFunctions()
+    {
+        return array();
+    }
+
+    /**
+     * Returns a list of operators to add to the existing list.
+     *
+     * @return array An array of operators
+     */
+    public function getOperators()
+    {
+        return array();
+    }
+
+    /**
+     * Returns a list of global functions to add to the existing list.
+     *
+     * @return array An array of global functions
+     */
+    public function getGlobals()
+    {
+        return array();
+    }
+}
diff --git a/inc/lib/Twig/Extension/Core.php b/inc/lib/Twig/Extension/Core.php
new file mode 100644
index 00000000..a4153245
--- /dev/null
+++ b/inc/lib/Twig/Extension/Core.php
@@ -0,0 +1,846 @@
+<?php
+
+if (!defined('ENT_SUBSTITUTE')) {
+    define('ENT_SUBSTITUTE', 8);
+}
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Extension_Core extends Twig_Extension
+{
+    /**
+     * Returns the token parser instance to add to the existing list.
+     *
+     * @return array An array of Twig_TokenParser instances
+     */
+    public function getTokenParsers()
+    {
+        return array(
+            new Twig_TokenParser_For(),
+            new Twig_TokenParser_If(),
+            new Twig_TokenParser_Extends(),
+            new Twig_TokenParser_Include(),
+            new Twig_TokenParser_Block(),
+            new Twig_TokenParser_Use(),
+            new Twig_TokenParser_Filter(),
+            new Twig_TokenParser_Macro(),
+            new Twig_TokenParser_Import(),
+            new Twig_TokenParser_From(),
+            new Twig_TokenParser_Set(),
+            new Twig_TokenParser_Spaceless(),
+        );
+    }
+
+    /**
+     * Returns a list of filters to add to the existing list.
+     *
+     * @return array An array of filters
+     */
+    public function getFilters()
+    {
+        $filters = array(
+            // formatting filters
+            'date'    => new Twig_Filter_Function('twig_date_format_filter'),
+            'format'  => new Twig_Filter_Function('sprintf'),
+            'replace' => new Twig_Filter_Function('twig_strtr'),
+
+            // encoding
+            'url_encode'  => new Twig_Filter_Function('twig_urlencode_filter'),
+            'json_encode' => new Twig_Filter_Function('twig_jsonencode_filter'),
+
+            // string filters
+            'title'      => new Twig_Filter_Function('twig_title_string_filter', array('needs_environment' => true)),
+            'capitalize' => new Twig_Filter_Function('twig_capitalize_string_filter', array('needs_environment' => true)),
+            'upper'      => new Twig_Filter_Function('strtoupper'),
+            'lower'      => new Twig_Filter_Function('strtolower'),
+            'striptags'  => new Twig_Filter_Function('strip_tags'),
+
+            // array helpers
+            'join'    => new Twig_Filter_Function('twig_join_filter'),
+            'reverse' => new Twig_Filter_Function('twig_reverse_filter'),
+            'length'  => new Twig_Filter_Function('twig_length_filter', array('needs_environment' => true)),
+            'sort'    => new Twig_Filter_Function('twig_sort_filter'),
+            'merge'   => new Twig_Filter_Function('twig_array_merge'),
+
+            // iteration and runtime
+            'default' => new Twig_Filter_Function('twig_default_filter'),
+            'keys'    => new Twig_Filter_Function('twig_get_array_keys_filter'),
+
+            // escaping
+            'escape' => new Twig_Filter_Function('twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
+            'e'      => new Twig_Filter_Function('twig_escape_filter', array('needs_environment' => true, 'is_safe_callback' => 'twig_escape_filter_is_safe')),
+        );
+
+        if (function_exists('mb_get_info')) {
+            $filters['upper'] = new Twig_Filter_Function('twig_upper_filter', array('needs_environment' => true));
+            $filters['lower'] = new Twig_Filter_Function('twig_lower_filter', array('needs_environment' => true));
+        }
+
+        return $filters;
+    }
+
+    /**
+     * Returns a list of global functions to add to the existing list.
+     *
+     * @return array An array of global functions
+     */
+    public function getFunctions()
+    {
+        return array(
+            'range'    => new Twig_Function_Function('range'),
+            'constant' => new Twig_Function_Function('constant'),
+            'cycle'    => new Twig_Function_Function('twig_cycle'),
+        );
+    }
+
+    /**
+     * Returns a list of filters to add to the existing list.
+     *
+     * @return array An array of filters
+     */
+    public function getTests()
+    {
+        return array(
+            'even'        => new Twig_Test_Function('twig_test_even'),
+            'odd'         => new Twig_Test_Function('twig_test_odd'),
+            'defined'     => new Twig_Test_Function('twig_test_defined'),
+            'sameas'      => new Twig_Test_Function('twig_test_sameas'),
+            'none'        => new Twig_Test_Function('twig_test_none'),
+            'null'        => new Twig_Test_Function('twig_test_none'),
+            'divisibleby' => new Twig_Test_Function('twig_test_divisibleby'),
+            'constant'    => new Twig_Test_Function('twig_test_constant'),
+            'empty'       => new Twig_Test_Function('twig_test_empty'),
+        );
+    }
+
+    /**
+     * Returns a list of operators to add to the existing list.
+     *
+     * @return array An array of operators
+     */
+    public function getOperators()
+    {
+        return array(
+            array(
+                'not' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Not'),
+                '-'   => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Neg'),
+                '+'   => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Pos'),
+            ),
+            array(
+                'b-and'  => array('precedence' => 5, 'class' => 'Twig_Node_Expression_Binary_BitwiseAnd', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                'b-xor'  => array('precedence' => 5, 'class' => 'Twig_Node_Expression_Binary_BitwiseXor', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                'b-or'   => array('precedence' => 5, 'class' => 'Twig_Node_Expression_Binary_BitwiseOr', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                'or'     => array('precedence' => 10, 'class' => 'Twig_Node_Expression_Binary_Or', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                'and'    => array('precedence' => 15, 'class' => 'Twig_Node_Expression_Binary_And', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '=='     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Equal', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '!='     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '<'      => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Less', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '>'      => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_Greater', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '>='     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_GreaterEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '<='     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_LessEqual', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                'not in' => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_NotIn', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                'in'     => array('precedence' => 20, 'class' => 'Twig_Node_Expression_Binary_In', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '+'      => array('precedence' => 30, 'class' => 'Twig_Node_Expression_Binary_Add', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '-'      => array('precedence' => 30, 'class' => 'Twig_Node_Expression_Binary_Sub', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '~'      => array('precedence' => 40, 'class' => 'Twig_Node_Expression_Binary_Concat', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '*'      => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mul', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '/'      => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Div', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '//'     => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_FloorDiv', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '%'      => array('precedence' => 60, 'class' => 'Twig_Node_Expression_Binary_Mod', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                'is'     => array('precedence' => 100, 'callable' => array($this, 'parseTestExpression'), 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                'is not' => array('precedence' => 100, 'callable' => array($this, 'parseNotTestExpression'), 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '..'     => array('precedence' => 110, 'class' => 'Twig_Node_Expression_Binary_Range', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT),
+                '**'     => array('precedence' => 200, 'class' => 'Twig_Node_Expression_Binary_Power', 'associativity' => Twig_ExpressionParser::OPERATOR_RIGHT),
+            ),
+        );
+    }
+
+    public function parseNotTestExpression(Twig_Parser $parser, $node)
+    {
+        return new Twig_Node_Expression_Unary_Not($this->parseTestExpression($parser, $node), $parser->getCurrentToken()->getLine());
+    }
+
+    public function parseTestExpression(Twig_Parser $parser, $node)
+    {
+        $stream = $parser->getStream();
+        $name = $stream->expect(Twig_Token::NAME_TYPE);
+        $arguments = null;
+        if ($stream->test(Twig_Token::PUNCTUATION_TYPE, '(')) {
+            $arguments = $parser->getExpressionParser()->parseArguments();
+        }
+
+        return new Twig_Node_Expression_Test($node, $name->getValue(), $arguments, $parser->getCurrentToken()->getLine());
+    }
+
+    /**
+     * Returns the name of the extension.
+     *
+     * @return string The extension name
+     */
+    public function getName()
+    {
+        return 'core';
+    }
+}
+
+/**
+ * Cycles over a value.
+ *
+ * @param ArrayAccess|array $values An array or an ArrayAccess instance
+ * @param integer           $i      The cycle value
+ *
+ * @return string The next value in the cycle
+ */
+function twig_cycle($values, $i)
+{
+    if (!is_array($values) && !$values instanceof ArrayAccess) {
+        return $values;
+    }
+
+    return $values[$i % count($values)];
+}
+
+/**
+ * Converts a date to the given format.
+ *
+ * <pre>
+ *   {{ post.published_at|date("m/d/Y") }}
+ * </pre>
+ *
+ * @param DateTime|string     $date     A date
+ * @param string              $format   A format
+ * @param DateTimeZone|string $timezone A timezone
+ *
+ * @return string The formatter date
+ */
+function twig_date_format_filter($date, $format = 'F j, Y H:i', $timezone = null)
+{
+    if (!$date instanceof DateTime) {
+        if (ctype_digit((string) $date)) {
+            $date = new DateTime('@'.$date);
+            $date->setTimezone(new DateTimeZone(date_default_timezone_get()));
+        } else {
+            $date = new DateTime($date);
+        }
+    }
+
+    if (null !== $timezone) {
+        if (!$timezone instanceof DateTimeZone) {
+            $timezone = new DateTimeZone($timezone);
+        }
+
+        $date->setTimezone($timezone);
+    }
+
+    return $date->format($format);
+}
+
+/**
+ * URL encodes a string.
+ *
+ * @param string $url A URL
+ * @param bool   $raw true to use rawurlencode() instead of urlencode
+ *
+ * @return string The URL encoded value
+ */
+function twig_urlencode_filter($url, $raw = false)
+{
+    if ($raw) {
+        return rawurlencode($url);
+    }
+
+    return urlencode($url);
+}
+
+if (version_compare(PHP_VERSION, '5.3.0', '<')) {
+    /**
+     * JSON encodes a PHP variable.
+     *
+     * @param mixed   $value   The value to encode.
+     * @param integer $options Not used on PHP 5.2.x
+     *
+     * @return mixed The JSON encoded value
+     */
+    function twig_jsonencode_filter($value, $options = 0)
+    {
+        if ($value instanceof Twig_Markup) {
+            $value = (string) $value;
+        } elseif (is_array($value)) {
+            array_walk_recursive($value, '_twig_markup2string');
+        }
+
+        return json_encode($value);
+    }
+} else {
+    /**
+     * JSON encodes a PHP variable.
+     *
+     * @param mixed   $value   The value to encode.
+     * @param integer $options Bitmask consisting of JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT
+     *
+     * @return mixed The JSON encoded value
+     */
+    function twig_jsonencode_filter($value, $options = 0)
+    {
+        if ($value instanceof Twig_Markup) {
+            $value = (string) $value;
+        } elseif (is_array($value)) {
+            array_walk_recursive($value, '_twig_markup2string');
+        }
+
+        return json_encode($value, $options);
+    }
+}
+
+function _twig_markup2string(&$value)
+{
+    if ($value instanceof Twig_Markup) {
+        $value = (string) $value;
+    }
+}
+
+/**
+ * Merges an array with another one.
+ *
+ * <pre>
+ *  {% set items = { 'apple': 'fruit', 'orange': 'fruit' } %}
+ *
+ *  {% set items = items|merge({ 'peugeot': 'car' }) %}
+ *
+ *  {# items now contains { 'apple': 'fruit', 'orange': 'fruit', 'peugeot': 'car' } #}
+ * </pre>
+ *
+ * @param array $arr1 An array
+ * @param array $arr2 An array
+ *
+ * @return array The merged array
+ */
+function twig_array_merge($arr1, $arr2)
+{
+    if (!is_array($arr1) || !is_array($arr2)) {
+        throw new Twig_Error_Runtime('The merge filter only work with arrays or hashes.');
+    }
+
+    return array_merge($arr1, $arr2);
+}
+
+/**
+ * Joins the values to a string.
+ *
+ * The separator between elements is an empty string per default, you can define it with the optional parameter.
+ *
+ * <pre>
+ *  {{ [1, 2, 3]|join('|') }}
+ *  {# returns 1|2|3 #}
+ *
+ *  {{ [1, 2, 3]|join }}
+ *  {# returns 123 #}
+ * </pre>
+ *
+ * @param array  $value An array
+ * @param string $glue  The separator
+ *
+ * @return string The concatenated string
+ */
+function twig_join_filter($value, $glue = '')
+{
+    return implode($glue, (array) $value);
+}
+
+/**
+ * Returns the value or the default value when it is undefined or empty.
+ *
+ * <pre>
+ *
+ *  {{ var.foo|default('foo item on var is not defined') }}
+ *
+ * </pre>
+ *
+ * @param mixed $value   A value
+ * @param mixed $default The default value
+ *
+ * @param mixed The value or the default value;
+ */
+function twig_default_filter($value, $default = '')
+{
+    if (twig_test_empty($value)) {
+        return $default;
+    } else {
+        return $value;
+    }
+}
+
+/**
+ * Returns the keys for the given array.
+ *
+ * It is useful when you want to iterate over the keys of an array:
+ *
+ * <pre>
+ *  {% for key in array|keys %}
+ *      {# ... #}
+ *  {% endfor %}
+ * </pre>
+ *
+ * @param array $array An array
+ *
+ * @return array The keys
+ */
+function twig_get_array_keys_filter($array)
+{
+    if (is_object($array) && $array instanceof Traversable) {
+        return array_keys(iterator_to_array($array));
+    }
+
+    if (!is_array($array)) {
+        return array();
+    }
+
+    return array_keys($array);
+}
+
+/**
+ * Reverses an array.
+ *
+ * @param array|Traversable $array An array or a Traversable instance
+ *
+ * return array The array reversed
+ */
+function twig_reverse_filter($array)
+{
+    if (is_object($array) && $array instanceof Traversable) {
+        return array_reverse(iterator_to_array($array));
+    }
+
+    if (!is_array($array)) {
+        return array();
+    }
+
+    return array_reverse($array);
+}
+
+/**
+ * Sorts an array.
+ *
+ * @param array $array An array
+ */
+function twig_sort_filter($array)
+{
+    asort($array);
+
+    return $array;
+}
+
+/* used internally */
+function twig_in_filter($value, $compare)
+{
+    if (is_array($compare)) {
+        return in_array($value, $compare);
+    } elseif (is_string($compare)) {
+        return false !== strpos($compare, (string) $value);
+    } elseif (is_object($compare) && $compare instanceof Traversable) {
+        return in_array($value, iterator_to_array($compare, false));
+    }
+
+    return false;
+}
+
+/**
+ * Replaces placeholders in a string.
+ *
+ * <pre>
+ *  {{ "I like %this% and %that%."|replace({'%this%': foo, '%that%': "bar"}) }}
+ * </pre>
+ *
+ * @param string $pattern      A string
+ * @param string $replacements The values for the placeholders
+ *
+ * @return string The string where the placeholders have been replaced
+ */
+function twig_strtr($pattern, $replacements)
+{
+    return str_replace(array_keys($replacements), array_values($replacements), $pattern);
+}
+
+/**
+ * Escapes a string.
+ *
+ * @param Twig_Environment $env     A Twig_Environment instance
+ * @param string           $string  The value to be escaped
+ * @param string           $type    The escaping strategy
+ * @param string           $charset The charset
+ */
+function twig_escape_filter(Twig_Environment $env, $string, $type = 'html', $charset = null)
+{
+    if (is_object($string) && $string instanceof Twig_Markup) {
+        return $string;
+    }
+
+    if (!is_string($string) && !(is_object($string) && method_exists($string, '__toString'))) {
+        return $string;
+    }
+
+    if (null === $charset) {
+        $charset = $env->getCharset();
+    }
+
+    switch ($type) {
+        case 'js':
+            // escape all non-alphanumeric characters
+            // into their \xHH or \uHHHH representations
+            if ('UTF-8' != $charset) {
+                $string = _twig_convert_encoding($string, 'UTF-8', $charset);
+            }
+
+            if (null === $string = preg_replace_callback('#[^\p{L}\p{N} ]#u', '_twig_escape_js_callback', $string)) {
+                throw new Twig_Error_Runtime('The string to escape is not a valid UTF-8 string.');
+            }
+
+            if ('UTF-8' != $charset) {
+                $string = _twig_convert_encoding($string, $charset, 'UTF-8');
+            }
+
+            return $string;
+
+        case 'html':
+            return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE, $charset);
+
+        default:
+            throw new Twig_Error_Runtime(sprintf('Invalid escape type "%s".', $type));
+    }
+}
+
+/* used internally */
+function twig_escape_filter_is_safe(Twig_Node $filterArgs)
+{
+    foreach ($filterArgs as $arg) {
+        if ($arg instanceof Twig_Node_Expression_Constant) {
+            return array($arg->getAttribute('value'));
+        } else {
+            return array();
+        }
+
+        break;
+    }
+
+    return array('html');
+}
+
+if (function_exists('iconv')) {
+    function _twig_convert_encoding($string, $to, $from)
+    {
+        return iconv($from, $to, $string);
+    }
+} elseif (function_exists('mb_convert_encoding')) {
+    function _twig_convert_encoding($string, $to, $from)
+    {
+        return mb_convert_encoding($string, $to, $from);
+    }
+} else {
+    function _twig_convert_encoding($string, $to, $from)
+    {
+        throw new Twig_Error_Runtime('No suitable convert encoding function (use UTF-8 as your encoding or install the iconv or mbstring extension).');
+    }
+}
+
+function _twig_escape_js_callback($matches)
+{
+    $char = $matches[0];
+
+    // \xHH
+    if (!isset($char[1])) {
+        return '\\x'.substr('00'.bin2hex($char), -2);
+    }
+
+    // \uHHHH
+    $char = _twig_convert_encoding($char, 'UTF-16BE', 'UTF-8');
+
+    return '\\u'.substr('0000'.bin2hex($char), -4);
+}
+
+// add multibyte extensions if possible
+if (function_exists('mb_get_info')) {
+    /**
+     * Returns the length of a PHP variable.
+     *
+     * @param Twig_Environment $env   A Twig_Environment instance
+     * @param mixed            $thing A PHP variable
+     *
+     * @return integer The length of the value
+     */
+    function twig_length_filter(Twig_Environment $env, $thing)
+    {
+        return is_scalar($thing) ? mb_strlen($thing, $env->getCharset()) : count($thing);
+    }
+
+    /**
+     * Converts a string to uppercase.
+     *
+     * @param Twig_Environment $env    A Twig_Environment instance
+     * @param string           $string A string
+     *
+     * @return string The uppercased string
+     */
+    function twig_upper_filter(Twig_Environment $env, $string)
+    {
+        if (null !== ($charset = $env->getCharset())) {
+            return mb_strtoupper($string, $charset);
+        }
+
+        return strtoupper($string);
+    }
+
+    /**
+     * Converts a string to lowercase.
+     *
+     * @param Twig_Environment $env    A Twig_Environment instance
+     * @param string           $string A string
+     *
+     * @return string The lowercased string
+     */
+    function twig_lower_filter(Twig_Environment $env, $string)
+    {
+        if (null !== ($charset = $env->getCharset())) {
+            return mb_strtolower($string, $charset);
+        }
+
+        return strtolower($string);
+    }
+
+    /**
+     * Returns a titlecased string.
+     *
+     * @param Twig_Environment $env    A Twig_Environment instance
+     * @param string           $string A string
+     *
+     * @return string The titlecased string
+     */
+    function twig_title_string_filter(Twig_Environment $env, $string)
+    {
+        if (null !== ($charset = $env->getCharset())) {
+            return mb_convert_case($string, MB_CASE_TITLE, $charset);
+        }
+
+        return ucwords(strtolower($string));
+    }
+
+    /**
+     * Returns a capitalized string.
+     *
+     * @param Twig_Environment $env    A Twig_Environment instance
+     * @param string           $string A string
+     *
+     * @return string The capitalized string
+     */
+    function twig_capitalize_string_filter(Twig_Environment $env, $string)
+    {
+        if (null !== ($charset = $env->getCharset())) {
+            return mb_strtoupper(mb_substr($string, 0, 1, $charset), $charset).
+                         mb_strtolower(mb_substr($string, 1, mb_strlen($string, $charset), $charset), $charset);
+        }
+
+        return ucfirst(strtolower($string));
+    }
+}
+// and byte fallback
+else
+{
+    /**
+     * Returns the length of a PHP variable.
+     *
+     * @param Twig_Environment $env   A Twig_Environment instance
+     * @param mixed            $thing A PHP variable
+     *
+     * @return integer The length of the value
+     */
+    function twig_length_filter(Twig_Environment $env, $thing)
+    {
+        return is_scalar($thing) ? strlen($thing) : count($thing);
+    }
+
+    /**
+     * Returns a titlecased string.
+     *
+     * @param Twig_Environment $env    A Twig_Environment instance
+     * @param string           $string A string
+     *
+     * @return string The titlecased string
+     */
+    function twig_title_string_filter(Twig_Environment $env, $string)
+    {
+        return ucwords(strtolower($string));
+    }
+
+    /**
+     * Returns a capitalized string.
+     *
+     * @param Twig_Environment $env    A Twig_Environment instance
+     * @param string           $string A string
+     *
+     * @return string The capitalized string
+     */
+    function twig_capitalize_string_filter(Twig_Environment $env, $string)
+    {
+        return ucfirst(strtolower($string));
+    }
+}
+
+/* used internally */
+function twig_ensure_traversable($seq)
+{
+    if (is_array($seq) || (is_object($seq) && $seq instanceof Traversable)) {
+        return $seq;
+    } else {
+        return array();
+    }
+}
+
+/**
+ * Checks that a variable points to the same memory address than another one.
+ *
+ * <pre>
+ * {% if foo.attribute is sameas(false) %}
+ *    the foo attribute really is the ``false`` PHP value
+ * {% endif %}
+ * </pre>
+ *
+ * @param mixed $value A PHP variable
+ * @param mixed $test  The PHP variable to test against
+ *
+ * @return Boolean true if the values are the same, false otherwise
+ */
+function twig_test_sameas($value, $test)
+{
+    return $value === $test;
+}
+
+/**
+ * Checks that a variable is null.
+ *
+ * <pre>
+ *  {{ var is none }}
+ * </pre>
+ *
+ * @param mixed $value a PHP variable.
+ *
+ * @return Boolean true if the value is null, false otherwise
+ */
+function twig_test_none($value)
+{
+    return null === $value;
+}
+
+/**
+ * Checks if a variable is divisible by a number.
+ *
+ * <pre>
+ *  {% if loop.index is divisibleby(3) %}
+ * </pre>
+ *
+ * @param integer $value A PHP value
+ * @param integer $num   A number
+ *
+ * @return Boolean true if the value is divisible by the number, false otherwise
+ */
+function twig_test_divisibleby($value, $num)
+{
+    return 0 == $value % $num;
+}
+
+/**
+ * Checks if a number is even.
+ *
+ * <pre>
+ *  {{ var is even }}
+ * </pre>
+ *
+ * @param integer $value An integer
+ *
+ * @return Boolean true if the value is even, false otherwise
+ */
+function twig_test_even($value)
+{
+    return $value % 2 == 0;
+}
+
+/**
+ * Checks if a number is odd.
+ *
+ * <pre>
+ *  {{ var is odd }}
+ * </pre>
+ *
+ * @param integer $value An integer
+ *
+ * @return Boolean true if the value is odd, false otherwise
+ */
+function twig_test_odd($value)
+{
+    return $value % 2 == 1;
+}
+
+/**
+ * Checks if a variable is the exact same value as a constant.
+ *
+ * <pre>
+ *  {% if post.status is constant('Post::PUBLISHED') %}
+ *    the status attribute is exactly the same as Post::PUBLISHED
+ *  {% endif %}
+ * </pre>
+ *
+ * @param mixed $value    A PHP value
+ * @param mixed $constant The constant to test against
+ *
+ * @return Boolean true if the value is the same as the constant, false otherwise
+ */
+function twig_test_constant($value, $constant)
+{
+    return constant($constant) === $value;
+}
+
+/**
+ * Checks if a variable is defined in the current context.
+ *
+ * <pre>
+ * {# defined works with variable names #}
+ * {% if foo is defined %}
+ *     {# ... #}
+ * {% endif %}
+ * </pre>
+ *
+ * @param mixed $name    A PHP variable
+ * @param array $context The current context
+ *
+ * @return Boolean true if the value is defined, false otherwise
+ */
+function twig_test_defined($name, $context)
+{
+    return array_key_exists($name, $context);
+}
+
+/**
+ * Checks if a variable is empty.
+ *
+ * <pre>
+ * {# evaluates to true if the foo variable is null, false, or the empty string #}
+ * {% if foo is empty %}
+ *     {# ... #}
+ * {% endif %}
+ * </pre>
+ *
+ * @param mixed $value A PHP variable
+ *
+ * @return Boolean true if the value is empty, false otherwise
+ */
+function twig_test_empty($value)
+{
+    if ($value instanceof Countable) {
+        return 0 == count($value);
+    }
+    return false === $value || (empty($value) && '0' != $value);
+}
diff --git a/inc/lib/Twig/Extension/Escaper.php b/inc/lib/Twig/Extension/Escaper.php
new file mode 100644
index 00000000..43ae1113
--- /dev/null
+++ b/inc/lib/Twig/Extension/Escaper.php
@@ -0,0 +1,77 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Extension_Escaper extends Twig_Extension
+{
+    protected $autoescape;
+
+    public function __construct($autoescape = true)
+    {
+        $this->autoescape = $autoescape;
+    }
+
+    /**
+     * Returns the token parser instances to add to the existing list.
+     *
+     * @return array An array of Twig_TokenParserInterface or Twig_TokenParserBrokerInterface instances
+     */
+    public function getTokenParsers()
+    {
+        return array(new Twig_TokenParser_AutoEscape());
+    }
+
+    /**
+     * Returns the node visitor instances to add to the existing list.
+     *
+     * @return array An array of Twig_NodeVisitorInterface instances
+     */
+    public function getNodeVisitors()
+    {
+        return array(new Twig_NodeVisitor_Escaper());
+    }
+
+    /**
+     * Returns a list of filters to add to the existing list.
+     *
+     * @return array An array of filters
+     */
+    public function getFilters()
+    {
+        return array(
+            'raw' => new Twig_Filter_Function('twig_raw_filter', array('is_safe' => array('all'))),
+        );
+    }
+
+    public function isGlobal()
+    {
+        return $this->autoescape;
+    }
+
+    /**
+     * Returns the name of the extension.
+     *
+     * @return string The extension name
+     */
+    public function getName()
+    {
+        return 'escaper';
+    }
+}
+
+/**
+ * Marks a variable as being safe.
+ *
+ * @param string $string A PHP variable
+ */
+function twig_raw_filter($string)
+{
+    return $string;
+}
+
diff --git a/inc/lib/Twig/Extension/Optimizer.php b/inc/lib/Twig/Extension/Optimizer.php
new file mode 100644
index 00000000..013fcb62
--- /dev/null
+++ b/inc/lib/Twig/Extension/Optimizer.php
@@ -0,0 +1,35 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Extension_Optimizer extends Twig_Extension
+{
+    protected $optimizers;
+
+    public function __construct($optimizers = -1)
+    {
+        $this->optimizers = $optimizers;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getNodeVisitors()
+    {
+        return array(new Twig_NodeVisitor_Optimizer($this->optimizers));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return 'optimizer';
+    }
+}
diff --git a/inc/lib/Twig/Extension/Sandbox.php b/inc/lib/Twig/Extension/Sandbox.php
new file mode 100644
index 00000000..bf76c11a
--- /dev/null
+++ b/inc/lib/Twig/Extension/Sandbox.php
@@ -0,0 +1,112 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Extension_Sandbox extends Twig_Extension
+{
+    protected $sandboxedGlobally;
+    protected $sandboxed;
+    protected $policy;
+
+    public function __construct(Twig_Sandbox_SecurityPolicyInterface $policy, $sandboxed = false)
+    {
+        $this->policy            = $policy;
+        $this->sandboxedGlobally = $sandboxed;
+    }
+
+    /**
+     * Returns the token parser instances to add to the existing list.
+     *
+     * @return array An array of Twig_TokenParserInterface or Twig_TokenParserBrokerInterface instances
+     */
+    public function getTokenParsers()
+    {
+        return array(new Twig_TokenParser_Sandbox());
+    }
+
+    /**
+     * Returns the node visitor instances to add to the existing list.
+     *
+     * @return array An array of Twig_NodeVisitorInterface instances
+     */
+    public function getNodeVisitors()
+    {
+        return array(new Twig_NodeVisitor_Sandbox());
+    }
+
+    public function enableSandbox()
+    {
+        $this->sandboxed = true;
+    }
+
+    public function disableSandbox()
+    {
+        $this->sandboxed = false;
+    }
+
+    public function isSandboxed()
+    {
+        return $this->sandboxedGlobally || $this->sandboxed;
+    }
+
+    public function isSandboxedGlobally()
+    {
+        return $this->sandboxedGlobally;
+    }
+
+    public function setSecurityPolicy(Twig_Sandbox_SecurityPolicyInterface $policy)
+    {
+        $this->policy = $policy;
+    }
+
+    public function getSecurityPolicy()
+    {
+        return $this->policy;
+    }
+
+    public function checkSecurity($tags, $filters, $functions)
+    {
+        if ($this->isSandboxed()) {
+            $this->policy->checkSecurity($tags, $filters, $functions);
+        }
+    }
+
+    public function checkMethodAllowed($obj, $method)
+    {
+        if ($this->isSandboxed()) {
+            $this->policy->checkMethodAllowed($obj, $method);
+        }
+    }
+
+    public function checkPropertyAllowed($obj, $method)
+    {
+        if ($this->isSandboxed()) {
+            $this->policy->checkPropertyAllowed($obj, $method);
+        }
+    }
+
+    public function ensureToStringAllowed($obj)
+    {
+        if (is_object($obj)) {
+            $this->policy->checkMethodAllowed($obj, '__toString');
+        }
+
+        return $obj;
+    }
+
+    /**
+     * Returns the name of the extension.
+     *
+     * @return string The extension name
+     */
+    public function getName()
+    {
+        return 'sandbox';
+    }
+}
diff --git a/inc/lib/Twig/ExtensionInterface.php b/inc/lib/Twig/ExtensionInterface.php
new file mode 100644
index 00000000..f8b232a5
--- /dev/null
+++ b/inc/lib/Twig/ExtensionInterface.php
@@ -0,0 +1,84 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Interface implemented by extension classes.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_ExtensionInterface
+{
+    /**
+     * Initializes the runtime environment.
+     *
+     * This is where you can load some file that contains filter functions for instance.
+     *
+     * @param Twig_Environment $environment The current Twig_Environment instance
+     */
+    function initRuntime(Twig_Environment $environment);
+
+    /**
+     * Returns the token parser instances to add to the existing list.
+     *
+     * @return array An array of Twig_TokenParserInterface or Twig_TokenParserBrokerInterface instances
+     */
+    function getTokenParsers();
+
+    /**
+     * Returns the node visitor instances to add to the existing list.
+     *
+     * @return array An array of Twig_NodeVisitorInterface instances
+     */
+    function getNodeVisitors();
+
+    /**
+     * Returns a list of filters to add to the existing list.
+     *
+     * @return array An array of filters
+     */
+    function getFilters();
+
+    /**
+     * Returns a list of tests to add to the existing list.
+     *
+     * @return array An array of tests
+     */
+    function getTests();
+
+    /**
+     * Returns a list of functions to add to the existing list.
+     *
+     * @return array An array of functions
+     */
+    function getFunctions();
+
+    /**
+     * Returns a list of operators to add to the existing list.
+     *
+     * @return array An array of operators
+     */
+    function getOperators();
+
+    /**
+     * Returns a list of global functions to add to the existing list.
+     *
+     * @return array An array of global functions
+     */
+    function getGlobals();
+
+    /**
+     * Returns the name of the extension.
+     *
+     * @return string The extension name
+     */
+    function getName();
+}
diff --git a/inc/lib/Twig/Extensions/Extension/I18n.php b/inc/lib/Twig/Extensions/Extension/I18n.php
new file mode 100644
index 00000000..1f795490
--- /dev/null
+++ b/inc/lib/Twig/Extensions/Extension/I18n.php
@@ -0,0 +1,45 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Extensions_Extension_I18n extends Twig_Extension
+{
+    /**
+     * Returns the token parser instances to add to the existing list.
+     *
+     * @return array An array of Twig_TokenParserInterface or Twig_TokenParserBrokerInterface instances
+     */
+    public function getTokenParsers()
+    {
+        return array(new Twig_Extensions_TokenParser_Trans());
+    }
+
+    /**
+     * Returns a list of filters to add to the existing list.
+     *
+     * @return array An array of filters
+     */
+    public function getFilters()
+    {
+        return array(
+            'trans' => new Twig_Filter_Function('gettext'),
+        );
+    }
+
+    /**
+     * Returns the name of the extension.
+     *
+     * @return string The extension name
+     */
+    public function getName()
+    {
+        return 'i18n';
+    }
+}
+
diff --git a/inc/lib/Twig/Extensions/Extension/Tinyboard.php b/inc/lib/Twig/Extensions/Extension/Tinyboard.php
new file mode 100644
index 00000000..0cf7705a
--- /dev/null
+++ b/inc/lib/Twig/Extensions/Extension/Tinyboard.php
@@ -0,0 +1,92 @@
+<?php
+
+class Twig_Extensions_Extension_Tinyboard extends Twig_Extension
+{
+	/**
+	* Returns a list of filters to add to the existing list.
+	*
+	* @return array An array of filters
+	*/
+	public function getFilters()
+	{
+		return Array(
+			'filesize' => new Twig_Filter_Function('format_bytes', Array('needs_environment' => false)),
+			'truncate' => new Twig_Filter_Function('twig_truncate_filter', array('needs_environment' => false)),
+			'truncate_body' => new Twig_Filter_Function('truncate', array('needs_environment' => false)),
+			'extension' => new Twig_Filter_Function('twig_extension_filter', array('needs_environment' => false)),
+			'sprintf' => new Twig_Filter_Function('sprintf', array('needs_environment' => false)),
+			'capcode' => new Twig_Filter_Function('capcode', array('needs_environment' => false)),
+			'hasPermission' => new Twig_Filter_Function('twig_hasPermission_filter', array('needs_environment' => false)),
+			'date' => new Twig_Filter_Function('twig_date_filter', array('needs_environment' => false)),
+			'poster_id' => new Twig_Filter_Function('poster_id', array('needs_environment' => false)),
+			'remove_whitespace' => new Twig_Filter_Function('twig_remove_whitespace_filter', array('needs_environment' => false)),
+			'count' => new Twig_Filter_Function('count', array('needs_environment' => false)),
+			'until' => new Twig_Filter_Function('until', array('needs_environment' => false))
+		);
+	}
+	
+	/**
+	* Returns a list of functions to add to the existing list.
+	*
+	* @return array An array of filters
+	*/
+	public function getFunctions()
+	{
+		return Array(
+			'time' => new Twig_Filter_Function('time', array('needs_environment' => false)),
+			'timezone' => new Twig_Filter_Function('twig_timezone_function', array('needs_environment' => false)),
+			'createHiddenInputs' => new Twig_Filter_Function('createHiddenInputs', array('needs_environment' => false))
+		);
+	}
+	
+	/**
+	* Returns the name of the extension.
+	*
+	* @return string The extension name
+	*/
+	public function getName()
+	{
+		return 'tinyboard';
+	}
+}
+
+function twig_timezone_function() {
+	// there's probably a much easier way of doing this
+	return sprintf("%s%02d", ($hr = (int)floor(($tz = date('Z')) / 3600)) > 0 ? '+' : '-', abs($hr)) . ':' . sprintf("%02d", (($tz / 3600) - $hr) * 60);
+}
+
+function twig_remove_whitespace_filter($data) {
+	return preg_replace('/[\t\r\n]/', '', $data);
+}
+
+function twig_date_filter($date, $format) {
+	return strftime($format, $date);
+}
+
+function twig_hasPermission_filter($mod, $permission, $board) {
+	return hasPermission($permission, $board, $mod);
+}
+
+function twig_extension_filter($value, $case_insensitive = true) {
+	$ext = substr($value, strrpos($value, '.') + 1);
+	if($case_insensitive)
+		$ext = strtolower($ext);		
+	return $ext;
+}
+
+function twig_sprintf_filter( $value, $var) {
+	return sprintf($value, $var);
+}
+
+function twig_truncate_filter($value, $length = 30, $preserve = false, $separator = '&hellip;') {
+	if (mb_strlen($value) > $length) {
+		if ($preserve) {
+			if (false !== ($breakpoint = strpos($value, ' ', $length))) {
+				$length = $breakpoint;
+			}
+		}
+		return substr($value, 0, $length) . $separator;
+	}
+	return $value;
+}
+
diff --git a/inc/lib/Twig/Extensions/Node/Trans.php b/inc/lib/Twig/Extensions/Node/Trans.php
new file mode 100644
index 00000000..18087e77
--- /dev/null
+++ b/inc/lib/Twig/Extensions/Node/Trans.php
@@ -0,0 +1,130 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a trans node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
+ */
+class Twig_Extensions_Node_Trans extends Twig_Node
+{
+    public function __construct(Twig_NodeInterface $body, Twig_NodeInterface $plural = null, Twig_Node_Expression $count = null, $lineno, $tag = null)
+    {
+        parent::__construct(array('count' => $count, 'body' => $body, 'plural' => $plural), array(), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->addDebugInfo($this);
+
+        list($msg, $vars) = $this->compileString($this->getNode('body'));
+
+        if (null !== $this->getNode('plural')) {
+            list($msg1, $vars1) = $this->compileString($this->getNode('plural'));
+
+            $vars = array_merge($vars, $vars1);
+        }
+
+        $function = null === $this->getNode('plural') ? 'gettext' : 'ngettext';
+
+        if ($vars) {
+            $compiler
+                ->write('echo strtr('.$function.'(')
+                ->subcompile($msg)
+            ;
+
+            if (null !== $this->getNode('plural')) {
+                $compiler
+                    ->raw(', ')
+                    ->subcompile($msg1)
+                    ->raw(', abs(')
+                    ->subcompile($this->getNode('count'))
+                    ->raw(')')
+                ;
+            }
+
+            $compiler->raw('), array(');
+
+            foreach ($vars as $var) {
+                if ('count' === $var->getAttribute('name')) {
+                    $compiler
+                        ->string('%count%')
+                        ->raw(' => abs(')
+                        ->subcompile($this->getNode('count'))
+                        ->raw('), ')
+                    ;
+                } else {
+                    $compiler
+                        ->string('%'.$var->getAttribute('name').'%')
+                        ->raw(' => ')
+                        ->subcompile($var)
+                        ->raw(', ')
+                    ;
+                }
+            }
+
+            $compiler->raw("));\n");
+        } else {
+            $compiler
+                ->write('echo '.$function.'(')
+                ->subcompile($msg)
+            ;
+
+            if (null !== $this->getNode('plural')) {
+                $compiler
+                    ->raw(', ')
+                    ->subcompile($msg1)
+                    ->raw(', abs(')
+                    ->subcompile($this->getNode('count'))
+                    ->raw(')')
+                ;
+            }
+
+            $compiler->raw(');');
+        }
+    }
+
+    protected function compileString(Twig_NodeInterface $body)
+    {
+        if ($body instanceof Twig_Node_Expression_Name || $body instanceof Twig_Node_Expression_Constant) {
+            return array($body, array());
+        }
+
+        $vars = array();
+
+        if (count($body)) {
+            $msg = '';
+
+            foreach ($body as $node) {
+                if ($node instanceof Twig_Node_Print) {
+                    $n = $node->getNode('expr');
+                    while ($n instanceof Twig_Node_Expression_Filter) {
+                        $n = $n->getNode('node');
+                    }
+                    $msg .= sprintf('%%%s%%', $n->getAttribute('name'));
+                    $vars[] = new Twig_Node_Expression_Name($n->getAttribute('name'), $n->getLine());
+                } else {
+                    $msg .= $node->getAttribute('data');
+                }
+            }
+        } else {
+            $msg = $body->getAttribute('data');
+        }
+
+        return array(new Twig_Node(array(new Twig_Node_Expression_Constant(trim($msg), $body->getLine()))), $vars);
+    }
+}
diff --git a/inc/lib/Twig/Extensions/TokenParser/Trans.php b/inc/lib/Twig/Extensions/TokenParser/Trans.php
new file mode 100644
index 00000000..5b2d93b6
--- /dev/null
+++ b/inc/lib/Twig/Extensions/TokenParser/Trans.php
@@ -0,0 +1,80 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Extensions_TokenParser_Trans extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $lineno = $token->getLine();
+        $stream = $this->parser->getStream();
+        $count = null;
+        $plural = null;
+
+        if (!$stream->test(Twig_Token::BLOCK_END_TYPE)) {
+            $body = $this->parser->getExpressionParser()->parseExpression();
+        } else {
+            $stream->expect(Twig_Token::BLOCK_END_TYPE);
+            $body = $this->parser->subparse(array($this, 'decideForFork'));
+            if ('plural' === $stream->next()->getValue()) {
+                $count = $this->parser->getExpressionParser()->parseExpression();
+                $stream->expect(Twig_Token::BLOCK_END_TYPE);
+                $plural = $this->parser->subparse(array($this, 'decideForEnd'), true);
+            }
+        }
+
+        $stream->expect(Twig_Token::BLOCK_END_TYPE);
+
+        $this->checkTransString($body, $lineno);
+
+        return new Twig_Extensions_Node_Trans($body, $plural, $count, $lineno, $this->getTag());
+    }
+
+    public function decideForFork($token)
+    {
+        return $token->test(array('plural', 'endtrans'));
+    }
+
+    public function decideForEnd($token)
+    {
+        return $token->test('endtrans');
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'trans';
+    }
+
+    protected function checkTransString(Twig_NodeInterface $body, $lineno)
+    {
+        foreach ($body as $i => $node) {
+            if (
+                $node instanceof Twig_Node_Text
+                ||
+                ($node instanceof Twig_Node_Print && $node->getNode('expr') instanceof Twig_Node_Expression_Name)
+            ) {
+                continue;
+            }
+
+            throw new Twig_Error_Syntax(sprintf('The text to be translated with "trans" can only contain references to simple variables'), $lineno);
+        }
+    }
+}
diff --git a/inc/lib/Twig/Filter.php b/inc/lib/Twig/Filter.php
new file mode 100644
index 00000000..9595a1a8
--- /dev/null
+++ b/inc/lib/Twig/Filter.php
@@ -0,0 +1,58 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a template filter.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+abstract class Twig_Filter implements Twig_FilterInterface
+{
+    protected $options;
+
+    public function __construct(array $options = array())
+    {
+        $this->options = array_merge(array(
+            'needs_environment' => false,
+            'needs_context'     => false,
+            'pre_escape'        => null,
+        ), $options);
+    }
+
+    public function needsEnvironment()
+    {
+        return $this->options['needs_environment'];
+    }
+
+    public function needsContext()
+    {
+        return $this->options['needs_context'];
+    }
+
+    public function getSafe(Twig_Node $filterArgs)
+    {
+        if (isset($this->options['is_safe'])) {
+            return $this->options['is_safe'];
+        }
+
+        if (isset($this->options['is_safe_callback'])) {
+            return call_user_func($this->options['is_safe_callback'], $filterArgs);
+        }
+
+        return array();
+    }
+
+    public function getPreEscape()
+    {
+        return $this->options['pre_escape'];
+    }
+}
diff --git a/inc/lib/Twig/Filter/Function.php b/inc/lib/Twig/Filter/Function.php
new file mode 100644
index 00000000..1de078b2
--- /dev/null
+++ b/inc/lib/Twig/Filter/Function.php
@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a function template filter.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Filter_Function extends Twig_Filter
+{
+    protected $function;
+
+    public function __construct($function, array $options = array())
+    {
+        parent::__construct($options);
+
+        $this->function = $function;
+    }
+
+    public function compile()
+    {
+        return $this->function;
+    }
+}
diff --git a/inc/lib/Twig/Filter/Method.php b/inc/lib/Twig/Filter/Method.php
new file mode 100644
index 00000000..d831e0f2
--- /dev/null
+++ b/inc/lib/Twig/Filter/Method.php
@@ -0,0 +1,34 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a method template filter.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Filter_Method extends Twig_Filter
+{
+    protected $extension, $method;
+
+    public function __construct(Twig_ExtensionInterface $extension, $method, array $options = array())
+    {
+        parent::__construct($options);
+
+        $this->extension = $extension;
+        $this->method = $method;
+    }
+
+    public function compile()
+    {
+        return sprintf('$this->env->getExtension(\'%s\')->%s', $this->extension->getName(), $this->method);
+    }
+}
diff --git a/inc/lib/Twig/FilterInterface.php b/inc/lib/Twig/FilterInterface.php
new file mode 100644
index 00000000..4ac19ceb
--- /dev/null
+++ b/inc/lib/Twig/FilterInterface.php
@@ -0,0 +1,34 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a template filter.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_FilterInterface
+{
+    /**
+     * Compiles a filter.
+     *
+     * @return string The PHP code for the filter
+     */
+    function compile();
+
+    function needsEnvironment();
+
+    function needsContext();
+
+    function getSafe(Twig_Node $filterArgs);
+
+    function getPreEscape();
+}
diff --git a/inc/lib/Twig/Function.php b/inc/lib/Twig/Function.php
new file mode 100644
index 00000000..1197924a
--- /dev/null
+++ b/inc/lib/Twig/Function.php
@@ -0,0 +1,52 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a template function.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+abstract class Twig_Function implements Twig_FunctionInterface
+{
+    protected $options;
+
+    public function __construct(array $options = array())
+    {
+        $this->options = array_merge(array(
+            'needs_environment' => false,
+            'needs_context'     => false,
+        ), $options);
+    }
+
+    public function needsEnvironment()
+    {
+        return $this->options['needs_environment'];
+    }
+
+    public function needsContext()
+    {
+        return $this->options['needs_context'];
+    }
+
+    public function getSafe(Twig_Node $functionArgs)
+    {
+        if (isset($this->options['is_safe'])) {
+            return $this->options['is_safe'];
+        }
+
+        if (isset($this->options['is_safe_callback'])) {
+            return call_user_func($this->options['is_safe_callback'], $functionArgs);
+        }
+
+        return array();
+    }
+}
diff --git a/inc/lib/Twig/Function/Function.php b/inc/lib/Twig/Function/Function.php
new file mode 100644
index 00000000..3237d8c5
--- /dev/null
+++ b/inc/lib/Twig/Function/Function.php
@@ -0,0 +1,34 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2010 Arnaud Le Blanc
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a function template function.
+ *
+ * @package    twig
+ * @author     Arnaud Le Blanc <arnaud.lb@gmail.com>
+ */
+class Twig_Function_Function extends Twig_Function
+{
+    protected $function;
+
+    public function __construct($function, array $options = array())
+    {
+        parent::__construct($options);
+
+        $this->function = $function;
+    }
+
+    public function compile()
+    {
+        return $this->function;
+    }
+}
diff --git a/inc/lib/Twig/Function/Method.php b/inc/lib/Twig/Function/Method.php
new file mode 100644
index 00000000..7328566e
--- /dev/null
+++ b/inc/lib/Twig/Function/Method.php
@@ -0,0 +1,35 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2010 Arnaud Le Blanc
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a method template function.
+ *
+ * @package    twig
+ * @author     Arnaud Le Blanc <arnaud.lb@gmail.com>
+ */
+class Twig_Function_Method extends Twig_Function
+{
+    protected $extension, $method;
+
+    public function __construct(Twig_ExtensionInterface $extension, $method, array $options = array())
+    {
+        parent::__construct($options);
+
+        $this->extension = $extension;
+        $this->method = $method;
+    }
+
+    public function compile()
+    {
+        return sprintf('$this->env->getExtension(\'%s\')->%s', $this->extension->getName(), $this->method);
+    }
+}
diff --git a/inc/lib/Twig/FunctionInterface.php b/inc/lib/Twig/FunctionInterface.php
new file mode 100644
index 00000000..ccc9fd93
--- /dev/null
+++ b/inc/lib/Twig/FunctionInterface.php
@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ * (c) 2010 Arnaud Le Blanc
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a template function.
+ *
+ * @package    twig
+ * @author     Arnaud Le Blanc <arnaud.lb@gmail.com>
+ */
+interface Twig_FunctionInterface
+{
+    /**
+     * Compiles a function.
+     *
+     * @return string The PHP code for the function
+     */
+    function compile();
+
+    function needsEnvironment();
+
+    function needsContext();
+
+    function getSafe(Twig_Node $filterArgs);
+}
diff --git a/inc/lib/Twig/Lexer.php b/inc/lib/Twig/Lexer.php
new file mode 100644
index 00000000..868a814e
--- /dev/null
+++ b/inc/lib/Twig/Lexer.php
@@ -0,0 +1,328 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Lexes a template string.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Lexer implements Twig_LexerInterface
+{
+    protected $tokens;
+    protected $code;
+    protected $cursor;
+    protected $lineno;
+    protected $end;
+    protected $state;
+    protected $brackets;
+
+    protected $env;
+    protected $filename;
+    protected $options;
+    protected $operatorRegex;
+
+    const STATE_DATA  = 0;
+    const STATE_BLOCK = 1;
+    const STATE_VAR   = 2;
+
+    const REGEX_NAME   = '/[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*/A';
+    const REGEX_NUMBER = '/[0-9]+(?:\.[0-9]+)?/A';
+    const REGEX_STRING = '/"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\'\\\\]*(?:\\\\.[^\'\\\\]*)*)\'/As';
+    const PUNCTUATION  = '()[]{}?:.,|';
+
+    public function __construct(Twig_Environment $env, array $options = array())
+    {
+        $this->env = $env;
+
+        $this->options = array_merge(array(
+            'tag_comment'     => array('{#', '#}'),
+            'tag_block'       => array('{%', '%}'),
+            'tag_variable'    => array('{{', '}}'),
+            'whitespace_trim' => '-',
+        ), $options);
+    }
+
+    /**
+     * Tokenizes a source code.
+     *
+     * @param  string $code     The source code
+     * @param  string $filename A unique identifier for the source code
+     *
+     * @return Twig_TokenStream A token stream instance
+     */
+    public function tokenize($code, $filename = null)
+    {
+        if (function_exists('mb_internal_encoding') && ((int) ini_get('mbstring.func_overload')) & 2) {
+            $mbEncoding = mb_internal_encoding();
+            mb_internal_encoding('ASCII');
+        }
+
+        $this->code = str_replace(array("\r\n", "\r"), "\n", $code);
+        $this->filename = $filename;
+        $this->cursor = 0;
+        $this->lineno = 1;
+        $this->end = strlen($this->code);
+        $this->tokens = array();
+        $this->state = self::STATE_DATA;
+        $this->brackets = array();
+
+        while ($this->cursor < $this->end) {
+            // dispatch to the lexing functions depending
+            // on the current state
+            switch ($this->state) {
+                case self::STATE_DATA:
+                    $this->lexData();
+                    break;
+
+                case self::STATE_BLOCK:
+                    $this->lexBlock();
+                    break;
+
+                case self::STATE_VAR:
+                    $this->lexVar();
+                    break;
+            }
+        }
+
+        $this->pushToken(Twig_Token::EOF_TYPE);
+
+        if (!empty($this->brackets)) {
+            list($expect, $lineno) = array_pop($this->brackets);
+            throw new Twig_Error_Syntax(sprintf('Unclosed "%s"', $expect), $lineno, $this->filename);
+        }
+
+        if (isset($mbEncoding)) {
+            mb_internal_encoding($mbEncoding);
+        }
+
+        return new Twig_TokenStream($this->tokens, $this->filename);
+    }
+
+    protected function lexData()
+    {
+        $pos = $this->end;
+        $append = '';
+
+        // Find the first token after the cursor
+        foreach (array('tag_comment', 'tag_variable', 'tag_block') as $type) {
+            $tmpPos = strpos($this->code, $this->options[$type][0], $this->cursor);
+            if (false !== $tmpPos && $tmpPos < $pos) {
+                $trimBlock = false;
+                $append = '';
+                $pos = $tmpPos;
+                $token = $this->options[$type][0];
+                if (strpos($this->code, $this->options['whitespace_trim'], $pos) === ($pos + strlen($token))) {
+                    $trimBlock = true;
+                    $append = $this->options['whitespace_trim'];
+                }
+            }
+        }
+
+        // if no matches are left we return the rest of the template as simple text token
+        if ($pos === $this->end) {
+            $this->pushToken(Twig_Token::TEXT_TYPE, substr($this->code, $this->cursor));
+            $this->cursor = $this->end;
+            return;
+        }
+
+        // push the template text first
+        $text = $textContent = substr($this->code, $this->cursor, $pos - $this->cursor);
+        if (true === $trimBlock) {
+            $text = rtrim($text);
+        }
+        $this->pushToken(Twig_Token::TEXT_TYPE, $text);
+        $this->moveCursor($textContent.$token.$append);
+
+        switch ($token) {
+            case $this->options['tag_comment'][0]:
+                $this->lexComment();
+                break;
+
+            case $this->options['tag_block'][0]:
+                // raw data?
+                if (preg_match('/\s*raw\s*'.preg_quote($this->options['tag_block'][1], '/').'/As', $this->code, $match, null, $this->cursor)) {
+                    $this->moveCursor($match[0]);
+                    $this->lexRawData();
+                    $this->state = self::STATE_DATA;
+                // {% line \d+ %}
+                } else if (preg_match('/\s*line\s+(\d+)\s*'.preg_quote($this->options['tag_block'][1], '/').'/As', $this->code, $match, null, $this->cursor)) {
+                    $this->moveCursor($match[0]);
+                    $this->lineno = (int) $match[1];
+                    $this->state = self::STATE_DATA;
+                } else {
+                    $this->pushToken(Twig_Token::BLOCK_START_TYPE);
+                    $this->state = self::STATE_BLOCK;
+                }
+                break;
+
+            case $this->options['tag_variable'][0]:
+                $this->pushToken(Twig_Token::VAR_START_TYPE);
+                $this->state = self::STATE_VAR;
+                break;
+        }
+    }
+
+    protected function lexBlock()
+    {
+        $trimTag = preg_quote($this->options['whitespace_trim'].$this->options['tag_block'][1], '/');
+        $endTag = preg_quote($this->options['tag_block'][1], '/');
+
+        if (empty($this->brackets) && preg_match('/\s*(?:'.$trimTag.'\s*|\s*'.$endTag.')\n?/A', $this->code, $match, null, $this->cursor)) {
+            $this->pushToken(Twig_Token::BLOCK_END_TYPE);
+            $this->moveCursor($match[0]);
+            $this->state = self::STATE_DATA;
+        } else {
+            $this->lexExpression();
+        }
+    }
+
+    protected function lexVar()
+    {
+        $trimTag = preg_quote($this->options['whitespace_trim'].$this->options['tag_variable'][1], '/');
+        $endTag = preg_quote($this->options['tag_variable'][1], '/');
+
+        if (empty($this->brackets) && preg_match('/\s*'.$trimTag.'\s*|\s*'.$endTag.'/A', $this->code, $match, null, $this->cursor)) {
+            $this->pushToken(Twig_Token::VAR_END_TYPE);
+            $this->moveCursor($match[0]);
+            $this->state = self::STATE_DATA;
+        } else {
+            $this->lexExpression();
+        }
+    }
+
+    protected function lexExpression()
+    {
+        // whitespace
+        if (preg_match('/\s+/A', $this->code, $match, null, $this->cursor)) {
+            $this->moveCursor($match[0]);
+
+            if ($this->cursor >= $this->end) {
+                throw new Twig_Error_Syntax(sprintf('Unexpected end of file: Unclosed "%s"', $this->state === self::STATE_BLOCK ? 'block' : 'variable'));
+            }
+        }
+
+        // operators
+        if (preg_match($this->getOperatorRegex(), $this->code, $match, null, $this->cursor)) {
+            $this->pushToken(Twig_Token::OPERATOR_TYPE, $match[0]);
+            $this->moveCursor($match[0]);
+        }
+        // names
+        elseif (preg_match(self::REGEX_NAME, $this->code, $match, null, $this->cursor)) {
+            $this->pushToken(Twig_Token::NAME_TYPE, $match[0]);
+            $this->moveCursor($match[0]);
+        }
+        // numbers
+        elseif (preg_match(self::REGEX_NUMBER, $this->code, $match, null, $this->cursor)) {
+            $this->pushToken(Twig_Token::NUMBER_TYPE, ctype_digit($match[0]) ? (int) $match[0] : (float) $match[0]);
+            $this->moveCursor($match[0]);
+        }
+        // punctuation
+        elseif (false !== strpos(self::PUNCTUATION, $this->code[$this->cursor])) {
+            // opening bracket
+            if (false !== strpos('([{', $this->code[$this->cursor])) {
+                $this->brackets[] = array($this->code[$this->cursor], $this->lineno);
+            }
+            // closing bracket
+            elseif (false !== strpos(')]}', $this->code[$this->cursor])) {
+                if (empty($this->brackets)) {
+                    throw new Twig_Error_Syntax(sprintf('Unexpected "%s"', $this->code[$this->cursor]), $this->lineno, $this->filename);
+                }
+
+                list($expect, $lineno) = array_pop($this->brackets);
+                if ($this->code[$this->cursor] != strtr($expect, '([{', ')]}')) {
+                    throw new Twig_Error_Syntax(sprintf('Unclosed "%s"', $expect), $lineno, $this->filename);
+                }
+            }
+
+            $this->pushToken(Twig_Token::PUNCTUATION_TYPE, $this->code[$this->cursor]);
+            ++$this->cursor;
+        }
+        // strings
+        elseif (preg_match(self::REGEX_STRING, $this->code, $match, null, $this->cursor)) {
+            $this->pushToken(Twig_Token::STRING_TYPE, stripcslashes(substr($match[0], 1, -1)));
+            $this->moveCursor($match[0]);
+        }
+        // unlexable
+        else {
+            throw new Twig_Error_Syntax(sprintf('Unexpected character "%s"', $this->code[$this->cursor]), $this->lineno, $this->filename);
+        }
+    }
+
+    protected function lexRawData()
+    {
+        if (!preg_match('/'.preg_quote($this->options['tag_block'][0], '/').'\s*endraw\s*'.preg_quote($this->options['tag_block'][1], '/').'/s', $this->code, $match, PREG_OFFSET_CAPTURE, $this->cursor)) {
+            throw new Twig_Error_Syntax(sprintf('Unexpected end of file: Unclosed "block"'));
+        }
+        $text = substr($this->code, $this->cursor, $match[0][1] - $this->cursor);
+        $this->pushToken(Twig_Token::TEXT_TYPE, $text);
+        $this->moveCursor($text.$match[0][0]);
+    }
+
+    protected function lexComment()
+    {
+        $commentEndRegex = '/(?:'.preg_quote($this->options['whitespace_trim'], '/')
+                           .preg_quote($this->options['tag_comment'][1], '/').'\s*|'
+                           .preg_quote($this->options['tag_comment'][1], '/').')\n?/s';
+
+        if (!preg_match($commentEndRegex, $this->code, $match, PREG_OFFSET_CAPTURE, $this->cursor)) {
+            throw new Twig_Error_Syntax('Unclosed comment', $this->lineno, $this->filename);
+        }
+
+        $this->moveCursor(substr($this->code, $this->cursor, $match[0][1] - $this->cursor).$match[0][0]);
+    }
+
+    protected function pushToken($type, $value = '')
+    {
+        // do not push empty text tokens
+        if (Twig_Token::TEXT_TYPE === $type && '' === $value) {
+            return;
+        }
+
+        $this->tokens[] = new Twig_Token($type, $value, $this->lineno);
+    }
+
+    protected function moveCursor($text)
+    {
+        $this->cursor += strlen($text);
+        $this->lineno += substr_count($text, "\n");
+    }
+
+    protected function getOperatorRegex()
+    {
+        if (null !== $this->operatorRegex) {
+            return $this->operatorRegex;
+        }
+
+        $operators = array_merge(
+            array('='),
+            array_keys($this->env->getUnaryOperators()),
+            array_keys($this->env->getBinaryOperators())
+        );
+
+        $operators = array_combine($operators, array_map('strlen', $operators));
+        arsort($operators);
+
+        $regex = array();
+        foreach ($operators as $operator => $length) {
+            // an operator that ends with a character must be followed by
+            // a whitespace or a parenthesis
+            if (ctype_alpha($operator[$length - 1])) {
+                $regex[] = preg_quote($operator, '/').'(?=[ ()])';
+            } else {
+                $regex[] = preg_quote($operator, '/');
+            }
+        }
+
+        return $this->operatorRegex = '/'.implode('|', $regex).'/A';
+    }
+}
diff --git a/inc/lib/Twig/LexerInterface.php b/inc/lib/Twig/LexerInterface.php
new file mode 100644
index 00000000..02233849
--- /dev/null
+++ b/inc/lib/Twig/LexerInterface.php
@@ -0,0 +1,29 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Interface implemented by lexer classes.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_LexerInterface
+{
+    /**
+     * Tokenizes a source code.
+     *
+     * @param  string $code     The source code
+     * @param  string $filename A unique identifier for the source code
+     *
+     * @return Twig_TokenStream A token stream instance
+     */
+    function tokenize($code, $filename = null);
+}
diff --git a/inc/lib/Twig/Loader/Array.php b/inc/lib/Twig/Loader/Array.php
new file mode 100644
index 00000000..e8dc1605
--- /dev/null
+++ b/inc/lib/Twig/Loader/Array.php
@@ -0,0 +1,95 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Loads a template from an array.
+ *
+ * When using this loader with a cache mechanism, you should know that a new cache
+ * key is generated each time a template content "changes" (the cache key being the
+ * source code of the template). If you don't want to see your cache grows out of
+ * control, you need to take care of clearing the old cache file by yourself.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Loader_Array implements Twig_LoaderInterface
+{
+    protected $templates;
+
+    /**
+     * Constructor.
+     *
+     * @param array $templates An array of templates (keys are the names, and values are the source code)
+     *
+     * @see Twig_Loader
+     */
+    public function __construct(array $templates)
+    {
+        $this->templates = array();
+        foreach ($templates as $name => $template) {
+            $this->templates[$name] = $template;
+        }
+    }
+
+    /**
+     * Adds or overrides a template.
+     *
+     * @param string $name     The template name
+     * @param string $template The template source
+     */
+    public function setTemplate($name, $template)
+    {
+        $this->templates[$name] = $template;
+    }
+
+    /**
+     * Gets the source code of a template, given its name.
+     *
+     * @param  string $name The name of the template to load
+     *
+     * @return string The template source code
+     */
+    public function getSource($name)
+    {
+        if (!isset($this->templates[$name])) {
+            throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name));
+        }
+
+        return $this->templates[$name];
+    }
+
+    /**
+     * Gets the cache key to use for the cache for a given template name.
+     *
+     * @param  string $name The name of the template to load
+     *
+     * @return string The cache key
+     */
+    public function getCacheKey($name)
+    {
+        if (!isset($this->templates[$name])) {
+            throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name));
+        }
+
+        return $this->templates[$name];
+    }
+
+    /**
+     * Returns true if the template is still fresh.
+     *
+     * @param string    $name The template name
+     * @param timestamp $time The last modification time of the cached template
+     */
+    public function isFresh($name, $time)
+    {
+        return true;
+    }
+}
diff --git a/inc/lib/Twig/Loader/Chain.php b/inc/lib/Twig/Loader/Chain.php
new file mode 100644
index 00000000..48dd8b84
--- /dev/null
+++ b/inc/lib/Twig/Loader/Chain.php
@@ -0,0 +1,100 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2011 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Loads templates from other loaders.
+ *
+ * @package twig
+ * @author  Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Loader_Chain implements Twig_LoaderInterface
+{
+    protected $loaders;
+
+    /**
+     * Constructor.
+     *
+     * @param Twig_LoaderInterface[] $loaders An array of loader instances
+     */
+    public function __construct(array $loaders = array())
+    {
+        $this->loaders = array();
+        foreach ($loaders as $loader) {
+            $this->addLoader($loader);
+        }
+    }
+
+    /**
+     * Adds a loader instance.
+     *
+     * @param Twig_LoaderInterface $loader A Loader instance
+     */
+    public function addLoader(Twig_LoaderInterface $loader)
+    {
+        $this->loaders[] = $loader;
+    }
+
+    /**
+     * Gets the source code of a template, given its name.
+     *
+     * @param  string $name The name of the template to load
+     *
+     * @return string The template source code
+     */
+    public function getSource($name)
+    {
+        foreach ($this->loaders as $loader) {
+            try {
+                return $loader->getSource($name);
+            } catch (Twig_Error_Loader $e) {
+            }
+        }
+
+        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name));
+    }
+
+    /**
+     * Gets the cache key to use for the cache for a given template name.
+     *
+     * @param  string $name The name of the template to load
+     *
+     * @return string The cache key
+     */
+    public function getCacheKey($name)
+    {
+        foreach ($this->loaders as $loader) {
+            try {
+                return $loader->getCacheKey($name);
+            } catch (Twig_Error_Loader $e) {
+            }
+        }
+
+        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name));
+    }
+
+    /**
+     * Returns true if the template is still fresh.
+     *
+     * @param string    $name The template name
+     * @param timestamp $time The last modification time of the cached template
+     */
+    public function isFresh($name, $time)
+    {
+        foreach ($this->loaders as $loader) {
+            try {
+                return $loader->isFresh($name, $time);
+            } catch (Twig_Error_Loader $e) {
+            }
+        }
+
+        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name));
+    }
+}
diff --git a/inc/lib/Twig/Loader/Filesystem.php b/inc/lib/Twig/Loader/Filesystem.php
new file mode 100644
index 00000000..be348aa3
--- /dev/null
+++ b/inc/lib/Twig/Loader/Filesystem.php
@@ -0,0 +1,152 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Loads template from the filesystem.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Loader_Filesystem implements Twig_LoaderInterface
+{
+    protected $paths;
+    protected $cache;
+
+    /**
+     * Constructor.
+     *
+     * @param string|array $paths A path or an array of paths where to look for templates
+     */
+    public function __construct($paths)
+    {
+        $this->setPaths($paths);
+    }
+
+    /**
+     * Returns the paths to the templates.
+     *
+     * @return array The array of paths where to look for templates
+     */
+    public function getPaths()
+    {
+        return $this->paths;
+    }
+
+    /**
+     * Sets the paths where templates are stored.
+     *
+     * @param string|array $paths A path or an array of paths where to look for templates
+     */
+    public function setPaths($paths)
+    {
+        if (!is_array($paths)) {
+            $paths = array($paths);
+        }
+
+        $this->paths = array();
+        foreach ($paths as $path) {
+            $this->addPath($path);
+        }
+    }
+
+    /**
+     * Adds a path where templates are stored.
+     *
+     * @param string $path A path where to look for templates
+     */
+    public function addPath($path)
+    {
+        // invalidate the cache
+        $this->cache = array();
+
+        if (!is_dir($path)) {
+            throw new Twig_Error_Loader(sprintf('The "%s" directory does not exist.', $path));
+        }
+
+        $this->paths[] = $path;
+    }
+
+    /**
+     * Gets the source code of a template, given its name.
+     *
+     * @param  string $name The name of the template to load
+     *
+     * @return string The template source code
+     */
+    public function getSource($name)
+    {
+        return file_get_contents($this->findTemplate($name));
+    }
+
+    /**
+     * Gets the cache key to use for the cache for a given template name.
+     *
+     * @param  string $name The name of the template to load
+     *
+     * @return string The cache key
+     */
+    public function getCacheKey($name)
+    {
+        return $this->findTemplate($name);
+    }
+
+    /**
+     * Returns true if the template is still fresh.
+     *
+     * @param string    $name The template name
+     * @param timestamp $time The last modification time of the cached template
+     */
+    public function isFresh($name, $time)
+    {
+        return filemtime($this->findTemplate($name)) < $time;
+    }
+
+    protected function findTemplate($name)
+    {
+        // normalize name
+        $name = preg_replace('#/{2,}#', '/', strtr($name, '\\', '/'));
+
+        if (isset($this->cache[$name])) {
+            return $this->cache[$name];
+        }
+
+        $this->validateName($name);
+
+        foreach ($this->paths as $path) {
+            if (is_file($path.'/'.$name)) {
+                return $this->cache[$name] = $path.'/'.$name;
+            }
+        }
+
+        throw new Twig_Error_Loader(sprintf('Unable to find template "%s" (looked into: %s).', $name, implode(', ', $this->paths)));
+    }
+
+    protected function validateName($name)
+    {
+        if (false !== strpos($name, "\0")) {
+            throw new Twig_Error_Loader('A template name cannot contain NUL bytes.');
+        }
+
+        $parts = explode('/', $name);
+        $level = 0;
+        foreach ($parts as $part) {
+            if ('..' === $part) {
+                --$level;
+            } elseif ('.' !== $part) {
+                ++$level;
+            }
+
+            if ($level < 0) {
+                throw new Twig_Error_Loader(sprintf('Looks like you try to load a template outside configured directories (%s).', $name));
+            }
+        }
+    }
+}
diff --git a/inc/lib/Twig/Loader/String.php b/inc/lib/Twig/Loader/String.php
new file mode 100644
index 00000000..26eb0096
--- /dev/null
+++ b/inc/lib/Twig/Loader/String.php
@@ -0,0 +1,59 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Loads a template from a string.
+ *
+ * When using this loader with a cache mechanism, you should know that a new cache
+ * key is generated each time a template content "changes" (the cache key being the
+ * source code of the template). If you don't want to see your cache grows out of
+ * control, you need to take care of clearing the old cache file by yourself.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Loader_String implements Twig_LoaderInterface
+{
+    /**
+     * Gets the source code of a template, given its name.
+     *
+     * @param  string $name The name of the template to load
+     *
+     * @return string The template source code
+     */
+    public function getSource($name)
+    {
+        return $name;
+    }
+
+    /**
+     * Gets the cache key to use for the cache for a given template name.
+     *
+     * @param  string $name The name of the template to load
+     *
+     * @return string The cache key
+     */
+    public function getCacheKey($name)
+    {
+        return $name;
+    }
+
+    /**
+     * Returns true if the template is still fresh.
+     *
+     * @param string    $name The template name
+     * @param timestamp $time The last modification time of the cached template
+     */
+    public function isFresh($name, $time)
+    {
+        return true;
+    }
+}
diff --git a/inc/lib/Twig/LoaderInterface.php b/inc/lib/Twig/LoaderInterface.php
new file mode 100644
index 00000000..f0bd3a5b
--- /dev/null
+++ b/inc/lib/Twig/LoaderInterface.php
@@ -0,0 +1,45 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Interface all loaders must implement.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_LoaderInterface
+{
+    /**
+     * Gets the source code of a template, given its name.
+     *
+     * @param  string $name The name of the template to load
+     *
+     * @return string The template source code
+     */
+    function getSource($name);
+
+    /**
+     * Gets the cache key to use for the cache for a given template name.
+     *
+     * @param  string $name The name of the template to load
+     *
+     * @return string The cache key
+     */
+    function getCacheKey($name);
+
+    /**
+     * Returns true if the template is still fresh.
+     *
+     * @param string    $name The template name
+     * @param timestamp $time The last modification time of the cached template
+     */
+    function isFresh($name, $time);
+}
diff --git a/inc/lib/Twig/Markup.php b/inc/lib/Twig/Markup.php
new file mode 100644
index 00000000..c1a1469c
--- /dev/null
+++ b/inc/lib/Twig/Markup.php
@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Marks a content as safe.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Markup
+{
+    protected $content;
+
+    public function __construct($content)
+    {
+        $this->content = (string) $content;
+    }
+
+    public function __toString()
+    {
+        return $this->content;
+    }
+}
diff --git a/inc/lib/Twig/Node.php b/inc/lib/Twig/Node.php
new file mode 100644
index 00000000..22e65d45
--- /dev/null
+++ b/inc/lib/Twig/Node.php
@@ -0,0 +1,227 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a node in the AST.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node implements Twig_NodeInterface, Countable, IteratorAggregate
+{
+    protected $nodes;
+    protected $attributes;
+    protected $lineno;
+    protected $tag;
+
+    /**
+     * Constructor.
+     *
+     * The nodes are automatically made available as properties ($this->node).
+     * The attributes are automatically made available as array items ($this['name']).
+     *
+     * @param array   $nodes      An array of named nodes
+     * @param array   $attributes An array of attributes (should not be nodes)
+     * @param integer $lineno     The line number
+     * @param string  $tag        The tag name associated with the Node
+     */
+    public function __construct(array $nodes = array(), array $attributes = array(), $lineno = 0, $tag = null)
+    {
+        $this->nodes = $nodes;
+        $this->attributes = $attributes;
+        $this->lineno = $lineno;
+        $this->tag = $tag;
+    }
+
+    public function __toString()
+    {
+        $attributes = array();
+        foreach ($this->attributes as $name => $value) {
+            $attributes[] = sprintf('%s: %s', $name, str_replace("\n", '', var_export($value, true)));
+        }
+
+        $repr = array(get_class($this).'('.implode(', ', $attributes));
+
+        if (count($this->nodes)) {
+            foreach ($this->nodes as $name => $node) {
+                $len = strlen($name) + 4;
+                $noderepr = array();
+                foreach (explode("\n", (string) $node) as $line) {
+                    $noderepr[] = str_repeat(' ', $len).$line;
+                }
+
+                $repr[] = sprintf('  %s: %s', $name, ltrim(implode("\n", $noderepr)));
+            }
+
+            $repr[] = ')';
+        } else {
+            $repr[0] .= ')';
+        }
+
+        return implode("\n", $repr);
+    }
+
+    public function toXml($asDom = false)
+    {
+        $dom = new DOMDocument('1.0', 'UTF-8');
+        $dom->formatOutput = true;
+        $dom->appendChild($xml = $dom->createElement('twig'));
+
+        $xml->appendChild($node = $dom->createElement('node'));
+        $node->setAttribute('class', get_class($this));
+
+        foreach ($this->attributes as $name => $value) {
+            $node->appendChild($attribute = $dom->createElement('attribute'));
+            $attribute->setAttribute('name', $name);
+            $attribute->appendChild($dom->createTextNode($value));
+        }
+
+        foreach ($this->nodes as $name => $n) {
+            if (null === $n) {
+                continue;
+            }
+
+            $child = $n->toXml(true)->getElementsByTagName('node')->item(0);
+            $child = $dom->importNode($child, true);
+            $child->setAttribute('name', $name);
+
+            $node->appendChild($child);
+        }
+
+        return $asDom ? $dom : $dom->saveXml();
+    }
+
+    public function compile(Twig_Compiler $compiler)
+    {
+        foreach ($this->nodes as $node) {
+            $node->compile($compiler);
+        }
+    }
+
+    public function getLine()
+    {
+        return $this->lineno;
+    }
+
+    public function getNodeTag()
+    {
+        return $this->tag;
+    }
+
+    /**
+     * Returns true if the attribute is defined.
+     *
+     * @param  string  The attribute name
+     *
+     * @return Boolean true if the attribute is defined, false otherwise
+     */
+    public function hasAttribute($name)
+    {
+        return array_key_exists($name, $this->attributes);
+    }
+
+    /**
+     * Gets an attribute.
+     *
+     * @param  string The attribute name
+     *
+     * @return mixed  The attribute value
+     */
+    public function getAttribute($name)
+    {
+        if (!array_key_exists($name, $this->attributes)) {
+            throw new Twig_Error_Runtime(sprintf('Attribute "%s" does not exist for Node "%s".', $name, get_class($this)));
+        }
+
+        return $this->attributes[$name];
+    }
+
+    /**
+     * Sets an attribute.
+     *
+     * @param string The attribute name
+     * @param mixed  The attribute value
+     */
+    public function setAttribute($name, $value)
+    {
+        $this->attributes[$name] = $value;
+    }
+
+    /**
+     * Removes an attribute.
+     *
+     * @param string The attribute name
+     */
+    public function removeAttribute($name)
+    {
+        unset($this->attributes[$name]);
+    }
+
+    /**
+     * Returns true if the node with the given identifier exists.
+     *
+     * @param  string  The node name
+     *
+     * @return Boolean true if the node with the given name exists, false otherwise
+     */
+    public function hasNode($name)
+    {
+        return array_key_exists($name, $this->nodes);
+    }
+
+    /**
+     * Gets a node by name.
+     *
+     * @param  string The node name
+     *
+     * @return Twig_Node A Twig_Node instance
+     */
+    public function getNode($name)
+    {
+        if (!array_key_exists($name, $this->nodes)) {
+            throw new Twig_Error_Runtime(sprintf('Node "%s" does not exist for Node "%s".', $name, get_class($this)));
+        }
+
+        return $this->nodes[$name];
+    }
+
+    /**
+     * Sets a node.
+     *
+     * @param string    The node name
+     * @param Twig_Node A Twig_Node instance
+     */
+    public function setNode($name, $node = null)
+    {
+        $this->nodes[$name] = $node;
+    }
+
+    /**
+     * Removes a node by name.
+     *
+     * @param string The node name
+     */
+    public function removeNode($name)
+    {
+        unset($this->nodes[$name]);
+    }
+
+    public function count()
+    {
+        return count($this->nodes);
+    }
+
+    public function getIterator()
+    {
+        return new ArrayIterator($this->nodes);
+    }
+}
diff --git a/inc/lib/Twig/Node/AutoEscape.php b/inc/lib/Twig/Node/AutoEscape.php
new file mode 100644
index 00000000..a0c2ee6d
--- /dev/null
+++ b/inc/lib/Twig/Node/AutoEscape.php
@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents an autoescape node.
+ *
+ * The value is the escaping strategy (can be html, js, ...)
+ *
+ * The true value is equivalent to html.
+ *
+ * If autoescaping is disabled, then the value is false.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_AutoEscape extends Twig_Node
+{
+    public function __construct($value, Twig_NodeInterface $body, $lineno, $tag = 'autoescape')
+    {
+        parent::__construct(array('body' => $body), array('value' => $value), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->subcompile($this->getNode('body'));
+    }
+}
diff --git a/inc/lib/Twig/Node/Block.php b/inc/lib/Twig/Node/Block.php
new file mode 100644
index 00000000..5548ad06
--- /dev/null
+++ b/inc/lib/Twig/Node/Block.php
@@ -0,0 +1,45 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a block node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Block extends Twig_Node
+{
+    public function __construct($name, Twig_NodeInterface $body, $lineno, $tag = null)
+    {
+        parent::__construct(array('body' => $body), array('name' => $name), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->addDebugInfo($this)
+            ->write(sprintf("public function block_%s(\$context, array \$blocks = array())\n", $this->getAttribute('name')), "{\n")
+            ->indent()
+        ;
+
+        $compiler
+            ->subcompile($this->getNode('body'))
+            ->outdent()
+            ->write("}\n\n")
+        ;
+    }
+}
diff --git a/inc/lib/Twig/Node/BlockReference.php b/inc/lib/Twig/Node/BlockReference.php
new file mode 100644
index 00000000..53f6287c
--- /dev/null
+++ b/inc/lib/Twig/Node/BlockReference.php
@@ -0,0 +1,38 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a block call node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_BlockReference extends Twig_Node implements Twig_NodeOutputInterface
+{
+    public function __construct($name, $lineno, $tag = null)
+    {
+        parent::__construct(array(), array('name' => $name), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->addDebugInfo($this)
+            ->write(sprintf("\$this->displayBlock('%s', \$context, \$blocks);\n", $this->getAttribute('name')))
+        ;
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression.php b/inc/lib/Twig/Node/Expression.php
new file mode 100644
index 00000000..13b170e5
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression.php
@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Abstract class for all nodes that represents an expression.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+abstract class Twig_Node_Expression extends Twig_Node
+{
+}
diff --git a/inc/lib/Twig/Node/Expression/Array.php b/inc/lib/Twig/Node/Expression/Array.php
new file mode 100644
index 00000000..2d860823
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Array.php
@@ -0,0 +1,41 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Array extends Twig_Node_Expression
+{
+    public function __construct(array $elements, $lineno)
+    {
+        parent::__construct($elements, array(), $lineno);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->raw('array(');
+        $first = true;
+        foreach ($this->nodes as $name => $node) {
+            if (!$first) {
+                $compiler->raw(', ');
+            }
+            $first = false;
+
+            $compiler
+                ->repr($name)
+                ->raw(' => ')
+                ->subcompile($node)
+            ;
+        }
+        $compiler->raw(')');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/AssignName.php b/inc/lib/Twig/Node/Expression/AssignName.php
new file mode 100644
index 00000000..67f12509
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/AssignName.php
@@ -0,0 +1,24 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+class Twig_Node_Expression_AssignName extends Twig_Node_Expression_Name
+{
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->raw(sprintf('$context[\'%s\']', $this->getAttribute('name')));
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary.php b/inc/lib/Twig/Node/Expression/Binary.php
new file mode 100644
index 00000000..9dd5de2c
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary.php
@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+abstract class Twig_Node_Expression_Binary extends Twig_Node_Expression
+{
+    public function __construct(Twig_NodeInterface $left, Twig_NodeInterface $right, $lineno)
+    {
+        parent::__construct(array('left' => $left, 'right' => $right), array(), $lineno);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->raw('(')
+            ->subcompile($this->getNode('left'))
+            ->raw(' ')
+        ;
+        $this->operator($compiler);
+        $compiler
+            ->raw(' ')
+            ->subcompile($this->getNode('right'))
+            ->raw(')')
+        ;
+    }
+
+    abstract public function operator(Twig_Compiler $compiler);
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/Add.php b/inc/lib/Twig/Node/Expression/Binary/Add.php
new file mode 100644
index 00000000..0ef8e117
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/Add.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_Add extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('+');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/And.php b/inc/lib/Twig/Node/Expression/Binary/And.php
new file mode 100644
index 00000000..d5752ebb
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/And.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_And extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('&&');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/BitwiseAnd.php b/inc/lib/Twig/Node/Expression/Binary/BitwiseAnd.php
new file mode 100644
index 00000000..9a46d845
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/BitwiseAnd.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_BitwiseAnd extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('&');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/BitwiseOr.php b/inc/lib/Twig/Node/Expression/Binary/BitwiseOr.php
new file mode 100644
index 00000000..058a20bf
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/BitwiseOr.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_BitwiseOr extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('|');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/BitwiseXor.php b/inc/lib/Twig/Node/Expression/Binary/BitwiseXor.php
new file mode 100644
index 00000000..f4da73d4
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/BitwiseXor.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_BitwiseXor extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('^');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/Concat.php b/inc/lib/Twig/Node/Expression/Binary/Concat.php
new file mode 100644
index 00000000..f9a64627
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/Concat.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_Concat extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('.');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/Div.php b/inc/lib/Twig/Node/Expression/Binary/Div.php
new file mode 100644
index 00000000..e0797a61
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/Div.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_Div extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('/');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/Equal.php b/inc/lib/Twig/Node/Expression/Binary/Equal.php
new file mode 100644
index 00000000..7b1236d0
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/Equal.php
@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_Equal extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('==');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/FloorDiv.php b/inc/lib/Twig/Node/Expression/Binary/FloorDiv.php
new file mode 100644
index 00000000..e86b1ea0
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/FloorDiv.php
@@ -0,0 +1,29 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_FloorDiv extends Twig_Node_Expression_Binary
+{
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->raw('floor(');
+        parent::compile($compiler);
+        $compiler->raw(')');
+    }
+
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('/');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/Greater.php b/inc/lib/Twig/Node/Expression/Binary/Greater.php
new file mode 100644
index 00000000..a110bd92
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/Greater.php
@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_Greater extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('>');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/GreaterEqual.php b/inc/lib/Twig/Node/Expression/Binary/GreaterEqual.php
new file mode 100644
index 00000000..3754fed2
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/GreaterEqual.php
@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_GreaterEqual extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('>=');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/In.php b/inc/lib/Twig/Node/Expression/Binary/In.php
new file mode 100644
index 00000000..788f9377
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/In.php
@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_In extends Twig_Node_Expression_Binary
+{
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->raw('twig_in_filter(')
+            ->subcompile($this->getNode('left'))
+            ->raw(', ')
+            ->subcompile($this->getNode('right'))
+            ->raw(')')
+        ;
+    }
+
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('in');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/Less.php b/inc/lib/Twig/Node/Expression/Binary/Less.php
new file mode 100644
index 00000000..45fd3004
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/Less.php
@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_Less extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('<');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/LessEqual.php b/inc/lib/Twig/Node/Expression/Binary/LessEqual.php
new file mode 100644
index 00000000..e38e257c
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/LessEqual.php
@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_LessEqual extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('<=');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/Mod.php b/inc/lib/Twig/Node/Expression/Binary/Mod.php
new file mode 100644
index 00000000..9924114f
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/Mod.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_Mod extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('%');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/Mul.php b/inc/lib/Twig/Node/Expression/Binary/Mul.php
new file mode 100644
index 00000000..c91529ca
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/Mul.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_Mul extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('*');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/NotEqual.php b/inc/lib/Twig/Node/Expression/Binary/NotEqual.php
new file mode 100644
index 00000000..26867ba2
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/NotEqual.php
@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_NotEqual extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('!=');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/NotIn.php b/inc/lib/Twig/Node/Expression/Binary/NotIn.php
new file mode 100644
index 00000000..f347b7b6
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/NotIn.php
@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_NotIn extends Twig_Node_Expression_Binary
+{
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->raw('!twig_in_filter(')
+            ->subcompile($this->getNode('left'))
+            ->raw(', ')
+            ->subcompile($this->getNode('right'))
+            ->raw(')')
+        ;
+    }
+
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('not in');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/Or.php b/inc/lib/Twig/Node/Expression/Binary/Or.php
new file mode 100644
index 00000000..adba49c6
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/Or.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_Or extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('||');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/Power.php b/inc/lib/Twig/Node/Expression/Binary/Power.php
new file mode 100644
index 00000000..b2c59040
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/Power.php
@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_Power extends Twig_Node_Expression_Binary
+{
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->raw('pow(')
+            ->subcompile($this->getNode('left'))
+            ->raw(', ')
+            ->subcompile($this->getNode('right'))
+            ->raw(')')
+        ;
+    }
+
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('**');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/Range.php b/inc/lib/Twig/Node/Expression/Binary/Range.php
new file mode 100644
index 00000000..bea4f2a6
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/Range.php
@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_Range extends Twig_Node_Expression_Binary
+{
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->raw('range(')
+            ->subcompile($this->getNode('left'))
+            ->raw(', ')
+            ->subcompile($this->getNode('right'))
+            ->raw(')')
+        ;
+    }
+
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('..');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Binary/Sub.php b/inc/lib/Twig/Node/Expression/Binary/Sub.php
new file mode 100644
index 00000000..d4463991
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Binary/Sub.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Binary_Sub extends Twig_Node_Expression_Binary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        return $compiler->raw('-');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/BlockReference.php b/inc/lib/Twig/Node/Expression/BlockReference.php
new file mode 100644
index 00000000..174d9097
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/BlockReference.php
@@ -0,0 +1,52 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a block call node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Expression_BlockReference extends Twig_Node_Expression
+{
+    public function __construct(Twig_NodeInterface $name, $asString = false, $lineno, $tag = null)
+    {
+        parent::__construct(array('name' => $name), array('as_string' => $asString, 'output' => false), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        if ($this->getAttribute('as_string')) {
+            $compiler->raw('(string) ');
+        }
+
+        if ($this->getAttribute('output')) {
+            $compiler
+                ->addDebugInfo($this)
+                ->write("\$this->displayBlock(")
+                ->subcompile($this->getNode('name'))
+                ->raw(", \$context, \$blocks);\n")
+            ;
+        } else {
+            $compiler
+                ->raw("\$this->renderBlock(")
+                ->subcompile($this->getNode('name'))
+                ->raw(", \$context, \$blocks)")
+            ;
+        }
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Conditional.php b/inc/lib/Twig/Node/Expression/Conditional.php
new file mode 100644
index 00000000..edcb1e2d
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Conditional.php
@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Conditional extends Twig_Node_Expression
+{
+    public function __construct(Twig_Node_Expression $expr1, Twig_Node_Expression $expr2, Twig_Node_Expression $expr3, $lineno)
+    {
+        parent::__construct(array('expr1' => $expr1, 'expr2' => $expr2, 'expr3' => $expr3), array(), $lineno);
+    }
+
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->raw('((')
+            ->subcompile($this->getNode('expr1'))
+            ->raw(') ? (')
+            ->subcompile($this->getNode('expr2'))
+            ->raw(') : (')
+            ->subcompile($this->getNode('expr3'))
+            ->raw('))')
+        ;
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Constant.php b/inc/lib/Twig/Node/Expression/Constant.php
new file mode 100644
index 00000000..a91dc698
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Constant.php
@@ -0,0 +1,23 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Constant extends Twig_Node_Expression
+{
+    public function __construct($value, $lineno)
+    {
+        parent::__construct(array(), array('value' => $value), $lineno);
+    }
+
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->repr($this->getAttribute('value'));
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/ExtensionReference.php b/inc/lib/Twig/Node/Expression/ExtensionReference.php
new file mode 100644
index 00000000..cb4efad0
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/ExtensionReference.php
@@ -0,0 +1,34 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents an extension call node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Expression_ExtensionReference extends Twig_Node_Expression
+{
+    public function __construct($name, $lineno, $tag = null)
+    {
+        parent::__construct(array(), array('name' => $name), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->raw(sprintf("\$this->env->getExtension('%s')", $this->getAttribute('name')));
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Filter.php b/inc/lib/Twig/Node/Expression/Filter.php
new file mode 100644
index 00000000..101e6df0
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Filter.php
@@ -0,0 +1,72 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Filter extends Twig_Node_Expression
+{
+    public function __construct(Twig_NodeInterface $node, Twig_Node_Expression_Constant $filterName, Twig_NodeInterface $arguments, $lineno, $tag = null)
+    {
+        parent::__construct(array('node' => $node, 'filter' => $filterName, 'arguments' => $arguments), array(), $lineno, $tag);
+    }
+
+    public function compile(Twig_Compiler $compiler)
+    {
+        $name = $this->getNode('filter')->getAttribute('value');
+        if (false === $filter = $compiler->getEnvironment()->getFilter($name)) {
+            throw new Twig_Error_Syntax(sprintf('The filter "%s" does not exist', $name), $this->getLine());
+        }
+
+        $node = $this->getNode('node');
+
+        // The default filter is intercepted when the filtered value
+        // is a name (like obj) or an attribute (like obj.attr)
+        // In such a case, it's compiled to {{ obj is defined ? obj|default('bar') : 'bar' }}
+        if ('default' === $name && ($node instanceof Twig_Node_Expression_Name || $node instanceof Twig_Node_Expression_GetAttr)) {
+            $compiler
+                ->raw('((')
+                ->subcompile(new Twig_Node_Expression_Test($node, 'defined', new Twig_Node(), $this->getLine()))
+                ->raw(') ? (')
+            ;
+
+            $this->compileFilter($compiler, $filter);
+
+            $compiler->raw(') : (');
+
+            if ($this->getNode('arguments')->hasNode(0)) {
+                $compiler->subcompile($this->getNode('arguments')->getNode(0));
+            } else {
+                $compiler->string('');
+            }
+
+            $compiler->raw('))');
+        } else {
+            $this->compileFilter($compiler, $filter);
+        }
+    }
+
+    protected function compileFilter(Twig_Compiler $compiler, Twig_FilterInterface $filter)
+    {
+        $compiler
+            ->raw($filter->compile().'(')
+            ->raw($filter->needsEnvironment() ? '$this->env, ' : '')
+            ->raw($filter->needsContext() ? '$context, ' : '')
+            ->subcompile($this->getNode('node'))
+        ;
+
+        foreach ($this->getNode('arguments') as $node) {
+            $compiler
+                ->raw(', ')
+                ->subcompile($node)
+            ;
+        }
+
+        $compiler->raw(')');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Function.php b/inc/lib/Twig/Node/Expression/Function.php
new file mode 100644
index 00000000..3f457199
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Function.php
@@ -0,0 +1,49 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Function extends Twig_Node_Expression
+{
+    public function __construct($name, Twig_NodeInterface $arguments, $lineno)
+    {
+        parent::__construct(array('arguments' => $arguments), array('name' => $name), $lineno);
+    }
+
+    public function compile(Twig_Compiler $compiler)
+    {
+        $function = $compiler->getEnvironment()->getFunction($this->getAttribute('name'));
+        if (false === $function) {
+            throw new Twig_Error_Syntax(sprintf('The function "%s" does not exist', $this->getAttribute('name')), $this->getLine());
+        }
+
+        $compiler
+            ->raw($function->compile().'(')
+            ->raw($function->needsEnvironment() ? '$this->env' : '')
+        ;
+
+        if ($function->needsContext()) {
+            $compiler->raw($function->needsEnvironment() ? ', $context' : '$context');
+        }
+
+        $first = true;
+        foreach ($this->getNode('arguments') as $node) {
+            if (!$first) {
+                $compiler->raw(', ');
+            } else {
+                if ($function->needsEnvironment() || $function->needsContext()) {
+                    $compiler->raw(', ');
+                }
+                $first = false;
+            }
+            $compiler->subcompile($node);
+        }
+
+        $compiler->raw(')');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/GetAttr.php b/inc/lib/Twig/Node/Expression/GetAttr.php
new file mode 100644
index 00000000..eb9e6050
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/GetAttr.php
@@ -0,0 +1,53 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_GetAttr extends Twig_Node_Expression
+{
+    public function __construct(Twig_Node_Expression $node, Twig_Node_Expression $attribute, Twig_NodeInterface $arguments, $type, $lineno)
+    {
+        parent::__construct(array('node' => $node, 'attribute' => $attribute, 'arguments' => $arguments), array('type' => $type), $lineno);
+    }
+
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->raw('$this->getAttribute(');
+
+        if ($this->hasAttribute('is_defined_test') && $compiler->getEnvironment()->isStrictVariables()) {
+            $compiler->subcompile(new Twig_Node_Expression_Filter(
+                $this->getNode('node'),
+                new Twig_Node_Expression_Constant('default', $this->getLine()),
+                new Twig_Node(),
+                $this->getLine()
+            ));
+        } else {
+            $compiler->subcompile($this->getNode('node'));
+        }
+
+        $compiler
+            ->raw(', ')
+            ->subcompile($this->getNode('attribute'))
+            ->raw(', array(')
+        ;
+
+        foreach ($this->getNode('arguments') as $node) {
+            $compiler
+                ->subcompile($node)
+                ->raw(', ')
+            ;
+        }
+
+        $compiler
+            ->raw('), ')
+            ->repr($this->getAttribute('type'))
+            ->raw($this->hasAttribute('is_defined_test') ? ', true' : ', false')
+            ->raw(')');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Name.php b/inc/lib/Twig/Node/Expression/Name.php
new file mode 100644
index 00000000..fceda2b7
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Name.php
@@ -0,0 +1,41 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Name extends Twig_Node_Expression
+{
+    public function __construct($name, $lineno)
+    {
+        parent::__construct(array(), array('name' => $name), $lineno);
+    }
+
+    public function compile(Twig_Compiler $compiler)
+    {
+        static $specialVars = array(
+            '_self'    => '$this',
+            '_context' => '$context',
+            '_charset' => '$this->env->getCharset()',
+        );
+
+        $name = $this->getAttribute('name');
+
+        if ($this->hasAttribute('is_defined_test')) {
+            if (isset($specialVars[$name])) {
+                $compiler->repr(true);
+            } else {
+                $compiler->raw('array_key_exists(')->repr($name)->raw(', $context)');
+            }
+        } elseif (isset($specialVars[$name])) {
+            $compiler->raw($specialVars[$name]);
+        } else {
+            $compiler->raw(sprintf('$this->getContext($context, \'%s\')', $name));
+        }
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Parent.php b/inc/lib/Twig/Node/Expression/Parent.php
new file mode 100644
index 00000000..5689fe45
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Parent.php
@@ -0,0 +1,39 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a parent node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Expression_Parent extends Twig_Node_Expression
+{
+    public function __construct($name, $lineno, $tag = null)
+    {
+        parent::__construct(array(), array('name' => $name), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->raw("\$this->renderParentBlock(")
+            ->string($this->getAttribute('name'))
+            ->raw(", \$context, \$blocks)")
+        ;
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Test.php b/inc/lib/Twig/Node/Expression/Test.php
new file mode 100644
index 00000000..ef35df6b
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Test.php
@@ -0,0 +1,60 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Test extends Twig_Node_Expression
+{
+    public function __construct(Twig_NodeInterface $node, $name, Twig_NodeInterface $arguments = null, $lineno)
+    {
+        parent::__construct(array('node' => $node, 'arguments' => $arguments), array('name' => $name), $lineno);
+    }
+
+    public function compile(Twig_Compiler $compiler)
+    {
+        $testMap = $compiler->getEnvironment()->getTests();
+        if (!isset($testMap[$this->getAttribute('name')])) {
+            throw new Twig_Error_Syntax(sprintf('The test "%s" does not exist', $this->getAttribute('name')), $this->getLine());
+        }
+
+        $name = $this->getAttribute('name');
+        $node = $this->getNode('node');
+
+        // defined is a special case
+        if ('defined' === $name) {
+            if ($node instanceof Twig_Node_Expression_Name || $node instanceof Twig_Node_Expression_GetAttr) {
+                $node->setAttribute('is_defined_test', true);
+                $compiler->subcompile($node);
+                $node->removeAttribute('is_defined_test');
+            } else {
+                throw new Twig_Error_Syntax('The "defined" test only works with simple variables', $this->getLine());
+            }
+            return;
+        }
+
+        $compiler
+            ->raw($testMap[$name]->compile().'(')
+            ->subcompile($node)
+        ;
+
+        if (null !== $this->getNode('arguments')) {
+            $compiler->raw(', ');
+
+            $max = count($this->getNode('arguments')) - 1;
+            foreach ($this->getNode('arguments') as $i => $arg) {
+                $compiler->subcompile($arg);
+
+                if ($i != $max) {
+                    $compiler->raw(', ');
+                }
+            }
+        }
+
+        $compiler->raw(')');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Unary.php b/inc/lib/Twig/Node/Expression/Unary.php
new file mode 100644
index 00000000..c514388e
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Unary.php
@@ -0,0 +1,30 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+abstract class Twig_Node_Expression_Unary extends Twig_Node_Expression
+{
+    public function __construct(Twig_NodeInterface $node, $lineno)
+    {
+        parent::__construct(array('node' => $node), array(), $lineno);
+    }
+
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->raw('(');
+        $this->operator($compiler);
+        $compiler
+            ->subcompile($this->getNode('node'))
+            ->raw(')')
+        ;
+    }
+
+    abstract public function operator(Twig_Compiler $compiler);
+}
diff --git a/inc/lib/Twig/Node/Expression/Unary/Neg.php b/inc/lib/Twig/Node/Expression/Unary/Neg.php
new file mode 100644
index 00000000..2a3937ec
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Unary/Neg.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Unary_Neg extends Twig_Node_Expression_Unary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        $compiler->raw('-');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Unary/Not.php b/inc/lib/Twig/Node/Expression/Unary/Not.php
new file mode 100644
index 00000000..f94073cf
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Unary/Not.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Unary_Not extends Twig_Node_Expression_Unary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        $compiler->raw('!');
+    }
+}
diff --git a/inc/lib/Twig/Node/Expression/Unary/Pos.php b/inc/lib/Twig/Node/Expression/Unary/Pos.php
new file mode 100644
index 00000000..04edb52a
--- /dev/null
+++ b/inc/lib/Twig/Node/Expression/Unary/Pos.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_Unary_Pos extends Twig_Node_Expression_Unary
+{
+    public function operator(Twig_Compiler $compiler)
+    {
+        $compiler->raw('+');
+    }
+}
diff --git a/inc/lib/Twig/Node/For.php b/inc/lib/Twig/Node/For.php
new file mode 100644
index 00000000..eb204e28
--- /dev/null
+++ b/inc/lib/Twig/Node/For.php
@@ -0,0 +1,141 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a for node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_For extends Twig_Node
+{
+    public function __construct(Twig_Node_Expression_AssignName $keyTarget, Twig_Node_Expression_AssignName $valueTarget, Twig_Node_Expression $seq, Twig_Node_Expression $ifexpr = null, Twig_NodeInterface $body, Twig_NodeInterface $else = null, $lineno, $tag = null)
+    {
+        parent::__construct(array('key_target' => $keyTarget, 'value_target' => $valueTarget, 'seq' => $seq, 'ifexpr' => $ifexpr, 'body' => $body, 'else' => $else), array('with_loop' => true), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->addDebugInfo($this)
+            // the (array) cast bypasses a PHP 5.2.6 bug
+            ->write("\$context['_parent'] = (array) \$context;\n")
+            ->write("\$context['_seq'] = twig_ensure_traversable(")
+            ->subcompile($this->getNode('seq'))
+            ->raw(");\n")
+        ;
+
+        if (null !== $this->getNode('else')) {
+            $compiler->write("\$context['_iterated'] = false;\n");
+        }
+
+        if ($this->getAttribute('with_loop')) {
+            $compiler
+                ->write("\$context['loop'] = array(\n")
+                ->write("  'parent' => \$context['_parent'],\n")
+                ->write("  'index0' => 0,\n")
+                ->write("  'index'  => 1,\n")
+                ->write("  'first'  => true,\n")
+                ->write(");\n")
+            ;
+
+            if (null === $this->getNode('ifexpr')) {
+                $compiler
+                    ->write("if (is_array(\$context['_seq']) || (is_object(\$context['_seq']) && \$context['_seq'] instanceof Countable)) {\n")
+                    ->indent()
+                    ->write("\$length = count(\$context['_seq']);\n")
+                    ->write("\$context['loop']['revindex0'] = \$length - 1;\n")
+                    ->write("\$context['loop']['revindex'] = \$length;\n")
+                    ->write("\$context['loop']['length'] = \$length;\n")
+                    ->write("\$context['loop']['last'] = 1 === \$length;\n")
+                    ->outdent()
+                    ->write("}\n")
+                ;
+            }
+        }
+
+        $compiler
+            ->write("foreach (\$context['_seq'] as ")
+            ->subcompile($this->getNode('key_target'))
+            ->raw(" => ")
+            ->subcompile($this->getNode('value_target'))
+            ->raw(") {\n")
+            ->indent()
+        ;
+
+        if (null !== $this->getNode('ifexpr')) {
+            $compiler
+                ->write("if (!(")
+                ->subcompile($this->getNode('ifexpr'))
+                ->raw(")) {\n")
+                ->indent()
+                ->write("continue;\n")
+                ->outdent()
+                ->write("}\n\n")
+            ;
+        }
+
+        $compiler->subcompile($this->getNode('body'));
+
+        if (null !== $this->getNode('else')) {
+            $compiler->write("\$context['_iterated'] = true;\n");
+        }
+
+        if ($this->getAttribute('with_loop')) {
+            $compiler
+                ->write("++\$context['loop']['index0'];\n")
+                ->write("++\$context['loop']['index'];\n")
+                ->write("\$context['loop']['first'] = false;\n")
+            ;
+
+            if (null === $this->getNode('ifexpr')) {
+                $compiler
+                    ->write("if (isset(\$context['loop']['length'])) {\n")
+                    ->indent()
+                    ->write("--\$context['loop']['revindex0'];\n")
+                    ->write("--\$context['loop']['revindex'];\n")
+                    ->write("\$context['loop']['last'] = 0 === \$context['loop']['revindex0'];\n")
+                    ->outdent()
+                    ->write("}\n")
+                ;
+            }
+        }
+
+        $compiler
+            ->outdent()
+            ->write("}\n")
+        ;
+
+        if (null !== $this->getNode('else')) {
+            $compiler
+                ->write("if (!\$context['_iterated']) {\n")
+                ->indent()
+                ->subcompile($this->getNode('else'))
+                ->outdent()
+                ->write("}\n")
+            ;
+        }
+
+        $compiler->write("\$_parent = \$context['_parent'];\n");
+
+        // remove some "private" loop variables (needed for nested loops)
+        $compiler->write('unset($context[\'_seq\'], $context[\'_iterated\'], $context[\''.$this->getNode('key_target')->getAttribute('name').'\'], $context[\''.$this->getNode('value_target')->getAttribute('name').'\'], $context[\'_parent\'], $context[\'loop\']);'."\n");
+
+        // keep the values set in the inner context for variables defined in the outer context
+        $compiler->write("\$context = array_merge(\$_parent, array_intersect_key(\$context, \$_parent));\n");
+    }
+}
diff --git a/inc/lib/Twig/Node/If.php b/inc/lib/Twig/Node/If.php
new file mode 100644
index 00000000..aa12efbe
--- /dev/null
+++ b/inc/lib/Twig/Node/If.php
@@ -0,0 +1,67 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents an if node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_If extends Twig_Node
+{
+    public function __construct(Twig_NodeInterface $tests, Twig_NodeInterface $else = null, $lineno, $tag = null)
+    {
+        parent::__construct(array('tests' => $tests, 'else' => $else), array(), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->addDebugInfo($this);
+        for ($i = 0; $i < count($this->getNode('tests')); $i += 2) {
+            if ($i > 0) {
+                $compiler
+                    ->outdent()
+                    ->write("} elseif (")
+                ;
+            } else {
+                $compiler
+                    ->write('if (')
+                ;
+            }
+
+            $compiler
+                ->subcompile($this->getNode('tests')->getNode($i))
+                ->raw(") {\n")
+                ->indent()
+                ->subcompile($this->getNode('tests')->getNode($i + 1))
+            ;
+        }
+
+        if ($this->hasNode('else') && null !== $this->getNode('else')) {
+            $compiler
+                ->outdent()
+                ->write("} else {\n")
+                ->indent()
+                ->subcompile($this->getNode('else'))
+            ;
+        }
+
+        $compiler
+            ->outdent()
+            ->write("}\n");
+    }
+}
diff --git a/inc/lib/Twig/Node/Import.php b/inc/lib/Twig/Node/Import.php
new file mode 100644
index 00000000..a327411d
--- /dev/null
+++ b/inc/lib/Twig/Node/Import.php
@@ -0,0 +1,51 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents an import node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Import extends Twig_Node
+{
+    public function __construct(Twig_Node_Expression $expr, Twig_Node_Expression $var, $lineno, $tag = null)
+    {
+        parent::__construct(array('expr' => $expr, 'var' => $var), array(), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->addDebugInfo($this)
+            ->write('')
+            ->subcompile($this->getNode('var'))
+            ->raw(' = ')
+        ;
+
+        if ($this->getNode('expr') instanceof Twig_Node_Expression_Name && '_self' === $this->getNode('expr')->getAttribute('name')) {
+            $compiler->raw("\$this");
+        } else {
+            $compiler
+                ->raw('$this->env->loadTemplate(')
+                ->subcompile($this->getNode('expr'))
+                ->raw(")")
+            ;
+        }
+
+        $compiler->raw(";\n");
+    }
+}
diff --git a/inc/lib/Twig/Node/Include.php b/inc/lib/Twig/Node/Include.php
new file mode 100644
index 00000000..467749b5
--- /dev/null
+++ b/inc/lib/Twig/Node/Include.php
@@ -0,0 +1,88 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents an include node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Include extends Twig_Node implements Twig_NodeOutputInterface
+{
+    public function __construct(Twig_Node_Expression $expr, Twig_Node_Expression $variables = null, $only = false, $ignoreMissing = false, $lineno, $tag = null)
+    {
+        parent::__construct(array('expr' => $expr, 'variables' => $variables), array('only' => (Boolean) $only, 'ignore_missing' => (Boolean) $ignoreMissing), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->addDebugInfo($this);
+
+        if ($this->getAttribute('ignore_missing')) {
+            $compiler
+                ->write("try {\n")
+                ->indent()
+            ;
+        }
+
+        if ($this->getNode('expr') instanceof Twig_Node_Expression_Constant) {
+            $compiler
+                ->write("\$this->env->loadTemplate(")
+                ->subcompile($this->getNode('expr'))
+                ->raw(")->display(")
+            ;
+        } else {
+            $compiler
+                ->write("\$template = \$this->env->resolveTemplate(")
+                ->subcompile($this->getNode('expr'))
+                ->raw(");\n")
+                ->write('$template->display(')
+            ;
+        }
+
+        if (false === $this->getAttribute('only')) {
+            if (null === $this->getNode('variables')) {
+                $compiler->raw('$context');
+            } else {
+                $compiler
+                    ->raw('array_merge($context, ')
+                    ->subcompile($this->getNode('variables'))
+                    ->raw(')')
+                ;
+            }
+        } else {
+            if (null === $this->getNode('variables')) {
+                $compiler->raw('array()');
+            } else {
+                $compiler->subcompile($this->getNode('variables'));
+            }
+        }
+
+        $compiler->raw(");\n");
+
+        if ($this->getAttribute('ignore_missing')) {
+            $compiler
+                ->outdent()
+                ->write("} catch (Twig_Error_Loader \$e) {\n")
+                ->indent()
+                ->write("// ignore missing template\n")
+                ->outdent()
+                ->write("}\n\n")
+            ;
+        }
+    }
+}
diff --git a/inc/lib/Twig/Node/Macro.php b/inc/lib/Twig/Node/Macro.php
new file mode 100644
index 00000000..9f95570f
--- /dev/null
+++ b/inc/lib/Twig/Node/Macro.php
@@ -0,0 +1,73 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a macro node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Macro extends Twig_Node
+{
+    public function __construct($name, Twig_NodeInterface $body, Twig_NodeInterface $arguments, $lineno, $tag = null)
+    {
+        parent::__construct(array('body' => $body, 'arguments' => $arguments), array('name' => $name), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $arguments = array();
+        foreach ($this->getNode('arguments') as $argument) {
+            $arguments[] = '$'.$argument->getAttribute('name').' = null';
+        }
+
+        $compiler
+            ->addDebugInfo($this)
+            ->write(sprintf("public function get%s(%s)\n", $this->getAttribute('name'), implode(', ', $arguments)), "{\n")
+            ->indent()
+            ->write("\$context = array_merge(\$this->env->getGlobals(), array(\n")
+            ->indent()
+        ;
+
+        foreach ($this->getNode('arguments') as $argument) {
+            $compiler
+                ->write('')
+                ->string($argument->getAttribute('name'))
+                ->raw(' => $'.$argument->getAttribute('name'))
+                ->raw(",\n")
+            ;
+        }
+
+        $compiler
+            ->outdent()
+            ->write("));\n\n")
+            ->write("ob_start();\n")
+            ->write("try {\n")
+            ->indent()
+            ->subcompile($this->getNode('body'))
+            ->outdent()
+            ->write("} catch(Exception \$e) {\n")
+            ->indent()
+            ->write("ob_end_clean();\n\n")
+            ->write("throw \$e;\n")
+            ->outdent()
+            ->write("}\n\n")
+            ->write("return ob_get_clean();\n")
+            ->outdent()
+            ->write("}\n\n")
+        ;
+    }
+}
diff --git a/inc/lib/Twig/Node/Module.php b/inc/lib/Twig/Node/Module.php
new file mode 100644
index 00000000..9b8c55e3
--- /dev/null
+++ b/inc/lib/Twig/Node/Module.php
@@ -0,0 +1,302 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a module node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Module extends Twig_Node
+{
+    public function __construct(Twig_NodeInterface $body, Twig_Node_Expression $parent = null, Twig_NodeInterface $blocks, Twig_NodeInterface $macros, Twig_NodeInterface $traits, $filename)
+    {
+        parent::__construct(array('parent' => $parent, 'body' => $body, 'blocks' => $blocks, 'macros' => $macros, 'traits' => $traits), array('filename' => $filename), 1);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $this->compileTemplate($compiler);
+    }
+
+    protected function compileTemplate(Twig_Compiler $compiler)
+    {
+        $this->compileClassHeader($compiler);
+
+        if (count($this->getNode('blocks')) || count($this->getNode('traits'))) {
+            $this->compileConstructor($compiler);
+        }
+
+        $this->compileGetParent($compiler);
+
+        $this->compileDisplayHeader($compiler);
+
+        $this->compileDisplayBody($compiler);
+
+        $this->compileDisplayFooter($compiler);
+
+        $compiler->subcompile($this->getNode('blocks'));
+
+        $this->compileMacros($compiler);
+
+        $this->compileGetTemplateName($compiler);
+
+        $this->compileIsTraitable($compiler);
+
+        $this->compileClassFooter($compiler);
+    }
+
+    protected function compileGetParent(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->write("protected function doGetParent(array \$context)\n", "{\n")
+            ->indent()
+            ->write("return ")
+        ;
+
+        if (null === $this->getNode('parent')) {
+            $compiler->raw("false");
+        } else {
+            if ($this->getNode('parent') instanceof Twig_Node_Expression_Constant) {
+                $compiler->subcompile($this->getNode('parent'));
+            } else {
+                $compiler
+                    ->raw("\$this->env->resolveTemplate(")
+                    ->subcompile($this->getNode('parent'))
+                    ->raw(")")
+                ;
+            }
+        }
+
+        $compiler
+            ->raw(";\n")
+            ->outdent()
+            ->write("}\n\n")
+        ;
+    }
+
+    protected function compileDisplayBody(Twig_Compiler $compiler)
+    {
+        $compiler->write("\$context = array_merge(\$this->env->getGlobals(), \$context);\n\n");
+        $compiler->subcompile($this->getNode('body'));
+
+        if (null !== $this->getNode('parent')) {
+            $compiler->write("\$this->getParent(\$context)->display(\$context, array_merge(\$this->blocks, \$blocks));\n");
+        }
+    }
+
+    protected function compileClassHeader(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->write("<?php\n\n")
+            // if the filename contains */, add a blank to avoid a PHP parse error
+            ->write("/* ".str_replace('*/', '* /', $this->getAttribute('filename'))." */\n")
+            ->write('class '.$compiler->getEnvironment()->getTemplateClass($this->getAttribute('filename')))
+            ->raw(sprintf(" extends %s\n", $compiler->getEnvironment()->getBaseTemplateClass()))
+            ->write("{\n")
+            ->indent()
+        ;
+    }
+
+    protected function compileConstructor(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->write("public function __construct(Twig_Environment \$env)\n", "{\n")
+            ->indent()
+            ->write("parent::__construct(\$env);\n\n")
+        ;
+
+        $countTraits = count($this->getNode('traits'));
+        if ($countTraits) {
+            // traits
+            foreach ($this->getNode('traits') as $i => $trait) {
+                $this->compileLoadTemplate($compiler, $trait->getNode('template'), sprintf('$_trait_%s', $i));
+
+                $compiler
+                    ->addDebugInfo($trait->getNode('template'))
+                    ->write(sprintf("if (!\$_trait_%s->isTraitable()) {\n", $i))
+                    ->indent()
+                    ->write("throw new Twig_Error_Runtime('Template \"'.")
+                    ->subcompile($trait->getNode('template'))
+                    ->raw(".'\" cannot be used as a trait.');\n")
+                    ->outdent()
+                    ->write("}\n")
+                    ->write(sprintf("\$_trait_%s_blocks = \$_trait_%s->getBlocks();\n\n", $i, $i))
+                ;
+
+                foreach ($trait->getNode('targets') as $key => $value) {
+                    $compiler
+                        ->write(sprintf("\$_trait_%s_blocks[", $i))
+                        ->subcompile($value)
+                        ->raw(sprintf("] = \$_trait_%s_blocks[", $i))
+                        ->string($key)
+                        ->raw(sprintf("]; unset(\$_trait_%s_blocks[", $i))
+                        ->string($key)
+                        ->raw("]);\n\n")
+                    ;
+                }
+            }
+
+            $compiler
+                ->write("\$this->blocks = array_merge(\n")
+                ->indent()
+            ;
+
+            for ($i = 0; $i < $countTraits; $i++) {
+                $compiler
+                    ->write(sprintf("\$_trait_%s_blocks,\n", $i))
+                ;
+            }
+
+            $compiler
+                ->write("array(\n")
+            ;
+        } else {
+            $compiler
+                ->write("\$this->blocks = array(\n")
+            ;
+        }
+
+        // blocks
+        $compiler
+            ->indent()
+        ;
+
+        foreach ($this->getNode('blocks') as $name => $node) {
+            $compiler
+                ->write(sprintf("'%s' => array(\$this, 'block_%s'),\n", $name, $name))
+            ;
+        }
+
+        if ($countTraits) {
+            $compiler
+                ->outdent()
+                ->write(")\n")
+            ;
+        }
+
+        $compiler
+            ->outdent()
+            ->write(");\n")
+            ->outdent()
+            ->write("}\n\n");
+        ;
+    }
+
+    protected function compileDisplayHeader(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->write("protected function doDisplay(array \$context, array \$blocks = array())\n", "{\n")
+            ->indent()
+        ;
+    }
+
+    protected function compileDisplayFooter(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->outdent()
+            ->write("}\n\n")
+        ;
+    }
+
+    protected function compileClassFooter(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->outdent()
+            ->write("}\n")
+        ;
+    }
+
+    protected function compileMacros(Twig_Compiler $compiler)
+    {
+        $compiler->subcompile($this->getNode('macros'));
+    }
+
+    protected function compileGetTemplateName(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->write("public function getTemplateName()\n", "{\n")
+            ->indent()
+            ->write('return ')
+            ->repr($this->getAttribute('filename'))
+            ->raw(";\n")
+            ->outdent()
+            ->write("}\n\n")
+        ;
+    }
+
+    protected function compileIsTraitable(Twig_Compiler $compiler)
+    {
+        // A template can be used as a trait if:
+        //   * it has no parent
+        //   * it has no macros
+        //   * it has no body
+        //
+        // Put another way, a template can be used as a trait if it
+        // only contains blocks and use statements.
+        $traitable = null === $this->getNode('parent') && 0 === count($this->getNode('macros'));
+        if ($traitable) {
+            if (!count($nodes = $this->getNode('body'))) {
+                $nodes = new Twig_Node(array($this->getNode('body')));
+            }
+
+            foreach ($nodes as $node) {
+                if ($node instanceof Twig_Node_Text && ctype_space($node->getAttribute('data'))) {
+                    continue;
+                }
+
+                if ($node instanceof Twig_Node_BlockReference) {
+                    continue;
+                }
+
+                $traitable = false;
+                break;
+            }
+        }
+
+        $compiler
+            ->write("public function isTraitable()\n", "{\n")
+            ->indent()
+            ->write(sprintf("return %s;\n", $traitable ? 'true' : 'false'))
+            ->outdent()
+            ->write("}\n")
+        ;
+    }
+
+    public function compileLoadTemplate(Twig_Compiler $compiler, $node, $var)
+    {
+        if ($node instanceof Twig_Node_Expression_Constant) {
+            $compiler
+                ->write(sprintf("%s = \$this->env->loadTemplate(", $var))
+                ->subcompile($node)
+                ->raw(");\n")
+            ;
+        } else {
+            $compiler
+                ->write(sprintf("%s = ", $var))
+                ->subcompile($node)
+                ->raw(";\n")
+                ->write(sprintf("if (!%s", $var))
+                ->raw(" instanceof Twig_Template) {\n")
+                ->indent()
+                ->write(sprintf("%s = \$this->env->loadTemplate(%s);\n", $var, $var))
+                ->outdent()
+                ->write("}\n")
+            ;
+        }
+    }
+}
diff --git a/inc/lib/Twig/Node/Print.php b/inc/lib/Twig/Node/Print.php
new file mode 100644
index 00000000..766725ff
--- /dev/null
+++ b/inc/lib/Twig/Node/Print.php
@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a node that outputs an expression.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Print extends Twig_Node implements Twig_NodeOutputInterface
+{
+    public function __construct(Twig_Node_Expression $expr, $lineno, $tag = null)
+    {
+        parent::__construct(array('expr' => $expr), array(), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->addDebugInfo($this)
+            ->write('echo ')
+            ->subcompile($this->getNode('expr'))
+            ->raw(";\n")
+        ;
+    }
+}
diff --git a/inc/lib/Twig/Node/Sandbox.php b/inc/lib/Twig/Node/Sandbox.php
new file mode 100644
index 00000000..cbfcb411
--- /dev/null
+++ b/inc/lib/Twig/Node/Sandbox.php
@@ -0,0 +1,48 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a sandbox node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Sandbox extends Twig_Node
+{
+    public function __construct(Twig_NodeInterface $body, $lineno, $tag = null)
+    {
+        parent::__construct(array('body' => $body), array(), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->addDebugInfo($this)
+            ->write("\$sandbox = \$this->env->getExtension('sandbox');\n")
+            ->write("if (!\$alreadySandboxed = \$sandbox->isSandboxed()) {\n")
+            ->indent()
+            ->write("\$sandbox->enableSandbox();\n")
+            ->outdent()
+            ->write("}\n")
+            ->subcompile($this->getNode('body'))
+            ->write("if (!\$alreadySandboxed) {\n")
+            ->indent()
+            ->write("\$sandbox->disableSandbox();\n")
+            ->outdent()
+            ->write("}\n")
+        ;
+    }
+}
diff --git a/inc/lib/Twig/Node/SandboxedModule.php b/inc/lib/Twig/Node/SandboxedModule.php
new file mode 100644
index 00000000..36d9f198
--- /dev/null
+++ b/inc/lib/Twig/Node/SandboxedModule.php
@@ -0,0 +1,71 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a module node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_SandboxedModule extends Twig_Node_Module
+{
+    protected $usedFilters;
+    protected $usedTags;
+    protected $usedFunctions;
+
+    public function __construct(Twig_Node_Module $node, array $usedFilters, array $usedTags, array $usedFunctions)
+    {
+        parent::__construct($node->getNode('body'), $node->getNode('parent'), $node->getNode('blocks'), $node->getNode('macros'), $node->getNode('traits'), $node->getAttribute('filename'), $node->getLine(), $node->getNodeTag());
+
+        $this->usedFilters = $usedFilters;
+        $this->usedTags = $usedTags;
+        $this->usedFunctions = $usedFunctions;
+    }
+
+    protected function compileDisplayBody(Twig_Compiler $compiler)
+    {
+        if (null === $this->getNode('parent')) {
+            $compiler->write("\$this->checkSecurity();\n");
+        }
+
+        parent::compileDisplayBody($compiler);
+    }
+
+    protected function compileDisplayFooter(Twig_Compiler $compiler)
+    {
+        parent::compileDisplayFooter($compiler);
+
+        $compiler
+            ->write("protected function checkSecurity() {\n")
+            ->indent()
+            ->write("\$this->env->getExtension('sandbox')->checkSecurity(\n")
+            ->indent()
+            ->write(!$this->usedTags ? "array(),\n" : "array('".implode('\', \'', $this->usedTags)."'),\n")
+            ->write(!$this->usedFilters ? "array(),\n" : "array('".implode('\', \'', $this->usedFilters)."'),\n")
+            ->write(!$this->usedFunctions ? "array()\n" : "array('".implode('\', \'', $this->usedFunctions)."')\n")
+            ->outdent()
+            ->write(");\n")
+        ;
+
+        if (null !== $this->getNode('parent')) {
+            $compiler
+                ->raw("\n")
+                ->write("\$this->parent->checkSecurity();\n")
+            ;
+        }
+
+        $compiler
+            ->outdent()
+            ->write("}\n\n")
+        ;
+    }
+}
diff --git a/inc/lib/Twig/Node/SandboxedPrint.php b/inc/lib/Twig/Node/SandboxedPrint.php
new file mode 100644
index 00000000..77730d8c
--- /dev/null
+++ b/inc/lib/Twig/Node/SandboxedPrint.php
@@ -0,0 +1,60 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Twig_Node_SandboxedPrint adds a check for the __toString() method
+ * when the variable is an object and the sandbox is activated.
+ *
+ * When there is a simple Print statement, like {{ article }},
+ * and if the sandbox is enabled, we need to check that the __toString()
+ * method is allowed if 'article' is an object.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_SandboxedPrint extends Twig_Node_Print
+{
+    public function __construct(Twig_Node_Expression $expr, $lineno, $tag = null)
+    {
+        parent::__construct($expr, $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->addDebugInfo($this)
+            ->write('echo $this->env->getExtension(\'sandbox\')->ensureToStringAllowed(')
+            ->subcompile($this->getNode('expr'))
+            ->raw(");\n")
+        ;
+    }
+
+    /**
+     * Removes node filters.
+     *
+     * This is mostly needed when another visitor adds filters (like the escaper one).
+     *
+     * @param Twig_Node $node A Node
+     */
+    protected function removeNodeFilter($node)
+    {
+        if ($node instanceof Twig_Node_Expression_Filter) {
+            return $this->removeNodeFilter($node->getNode('node'));
+        }
+
+        return $node;
+    }
+}
diff --git a/inc/lib/Twig/Node/Set.php b/inc/lib/Twig/Node/Set.php
new file mode 100644
index 00000000..9913664f
--- /dev/null
+++ b/inc/lib/Twig/Node/Set.php
@@ -0,0 +1,102 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a set node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Set extends Twig_Node
+{
+    public function __construct($capture, Twig_NodeInterface $names, Twig_NodeInterface $values, $lineno, $tag = null)
+    {
+        parent::__construct(array('names' => $names, 'values' => $values), array('capture' => $capture, 'safe' => false), $lineno, $tag);
+
+        /*
+         * Optimizes the node when capture is used for a large block of text.
+         *
+         * {% set foo %}foo{% endset %} is compiled to $context['foo'] = new Twig_Markup("foo");
+         */
+        if ($this->getAttribute('capture')) {
+            $this->setAttribute('safe', true);
+
+            $values = $this->getNode('values');
+            if ($values instanceof Twig_Node_Text) {
+                $this->setNode('values', new Twig_Node_Expression_Constant($values->getAttribute('data'), $values->getLine()));
+                $this->setAttribute('capture', false);
+            }
+        }
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler->addDebugInfo($this);
+
+        if (count($this->getNode('names')) > 1) {
+            $compiler->write('list(');
+            foreach ($this->getNode('names') as $idx => $node) {
+                if ($idx) {
+                    $compiler->raw(', ');
+                }
+
+                $compiler->subcompile($node);
+            }
+            $compiler->raw(')');
+        } else {
+            if ($this->getAttribute('capture')) {
+                $compiler
+                    ->write("ob_start();\n")
+                    ->subcompile($this->getNode('values'))
+                ;
+            }
+
+            $compiler->subcompile($this->getNode('names'), false);
+
+            if ($this->getAttribute('capture')) {
+                $compiler->raw(" = new Twig_Markup(ob_get_clean())");
+            }
+        }
+
+        if (!$this->getAttribute('capture')) {
+            $compiler->raw(' = ');
+
+            if (count($this->getNode('names')) > 1) {
+                $compiler->write('array(');
+                foreach ($this->getNode('values') as $idx => $value) {
+                    if ($idx) {
+                        $compiler->raw(', ');
+                    }
+
+                    $compiler->subcompile($value);
+                }
+                $compiler->raw(')');
+            } else {
+                if ($this->getAttribute('safe')) {
+                    $compiler
+                        ->raw("new Twig_Markup(")
+                        ->subcompile($this->getNode('values'))
+                        ->raw(")")
+                    ;
+                } else {
+                    $compiler->subcompile($this->getNode('values'));
+                }
+            }
+        }
+
+        $compiler->raw(";\n");
+    }
+}
diff --git a/inc/lib/Twig/Node/Spaceless.php b/inc/lib/Twig/Node/Spaceless.php
new file mode 100644
index 00000000..46013466
--- /dev/null
+++ b/inc/lib/Twig/Node/Spaceless.php
@@ -0,0 +1,41 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a spaceless node.
+ *
+ * It removes spaces between HTML tags.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Spaceless extends Twig_Node
+{
+    public function __construct(Twig_NodeInterface $body, $lineno, $tag = 'spaceless')
+    {
+        parent::__construct(array('body' => $body), array(), $lineno, $tag);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->addDebugInfo($this)
+            ->write("ob_start();\n")
+            ->subcompile($this->getNode('body'))
+            ->write("echo trim(preg_replace('/>\s+</', '><', ob_get_clean()));\n")
+        ;
+    }
+}
diff --git a/inc/lib/Twig/Node/Text.php b/inc/lib/Twig/Node/Text.php
new file mode 100644
index 00000000..0c1c0928
--- /dev/null
+++ b/inc/lib/Twig/Node/Text.php
@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a text node.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Node_Text extends Twig_Node implements Twig_NodeOutputInterface
+{
+    public function __construct($data, $lineno)
+    {
+        parent::__construct(array(), array('data' => $data), $lineno);
+    }
+
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    public function compile(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->addDebugInfo($this)
+            ->write('echo ')
+            ->string($this->getAttribute('data'))
+            ->raw(";\n")
+        ;
+    }
+}
diff --git a/inc/lib/Twig/NodeInterface.php b/inc/lib/Twig/NodeInterface.php
new file mode 100644
index 00000000..165aed4d
--- /dev/null
+++ b/inc/lib/Twig/NodeInterface.php
@@ -0,0 +1,30 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a node in the AST.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_NodeInterface
+{
+    /**
+     * Compiles the node to PHP.
+     *
+     * @param Twig_Compiler A Twig_Compiler instance
+     */
+    function compile(Twig_Compiler $compiler);
+
+    function getLine();
+
+    function getNodeTag();
+}
diff --git a/inc/lib/Twig/NodeOutputInterface.php b/inc/lib/Twig/NodeOutputInterface.php
new file mode 100644
index 00000000..71839569
--- /dev/null
+++ b/inc/lib/Twig/NodeOutputInterface.php
@@ -0,0 +1,20 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a displayable node in the AST.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_NodeOutputInterface
+{
+}
diff --git a/inc/lib/Twig/NodeTraverser.php b/inc/lib/Twig/NodeTraverser.php
new file mode 100644
index 00000000..1e82b032
--- /dev/null
+++ b/inc/lib/Twig/NodeTraverser.php
@@ -0,0 +1,89 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Twig_NodeTraverser is a node traverser.
+ *
+ * It visits all nodes and their children and call the given visitor for each.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_NodeTraverser
+{
+    protected $env;
+    protected $visitors;
+
+    /**
+     * Constructor.
+     *
+     * @param Twig_Environment $env      A Twig_Environment instance
+     * @param array            $visitors An array of Twig_NodeVisitorInterface instances
+     */
+    public function __construct(Twig_Environment $env, array $visitors = array())
+    {
+        $this->env = $env;
+        $this->visitors = array();
+        foreach ($visitors as $visitor) {
+            $this->addVisitor($visitor);
+        }
+    }
+
+    /**
+     * Adds a visitor.
+     *
+     * @param Twig_NodeVisitorInterface $visitor A Twig_NodeVisitorInterface instance
+     */
+    public function addVisitor(Twig_NodeVisitorInterface $visitor)
+    {
+        if (!isset($this->visitors[$visitor->getPriority()])) {
+            $this->visitors[$visitor->getPriority()] = array();
+        }
+
+        $this->visitors[$visitor->getPriority()][] = $visitor;
+    }
+
+    /**
+     * Traverses a node and calls the registered visitors.
+     *
+     * @param Twig_NodeInterface $node A Twig_NodeInterface instance
+     */
+    public function traverse(Twig_NodeInterface $node)
+    {
+        ksort($this->visitors);
+        foreach ($this->visitors as $visitors) {
+            foreach ($visitors as $visitor) {
+                $node = $this->traverseForVisitor($visitor, $node);
+            }
+        }
+
+        return $node;
+    }
+
+    protected function traverseForVisitor(Twig_NodeVisitorInterface $visitor, Twig_NodeInterface $node = null)
+    {
+        if (null === $node) {
+            return null;
+        }
+
+        $node = $visitor->enterNode($node, $this->env);
+
+        foreach ($node as $k => $n) {
+            if (false !== $n = $this->traverseForVisitor($visitor, $n)) {
+                $node->setNode($k, $n);
+            } else {
+                $node->removeNode($k);
+            }
+        }
+
+        return $visitor->leaveNode($node, $this->env);
+    }
+}
diff --git a/inc/lib/Twig/NodeVisitor/Escaper.php b/inc/lib/Twig/NodeVisitor/Escaper.php
new file mode 100644
index 00000000..049ce96a
--- /dev/null
+++ b/inc/lib/Twig/NodeVisitor/Escaper.php
@@ -0,0 +1,161 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Twig_NodeVisitor_Escaper implements output escaping.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_NodeVisitor_Escaper implements Twig_NodeVisitorInterface
+{
+    protected $statusStack = array();
+    protected $blocks = array();
+
+    protected $safeAnalysis;
+    protected $traverser;
+
+    function __construct()
+    {
+        $this->safeAnalysis = new Twig_NodeVisitor_SafeAnalysis();
+    }
+
+    /**
+     * Called before child nodes are visited.
+     *
+     * @param Twig_NodeInterface $node The node to visit
+     * @param Twig_Environment   $env  The Twig environment instance
+     *
+     * @param Twig_NodeInterface The modified node
+     */
+    public function enterNode(Twig_NodeInterface $node, Twig_Environment $env)
+    {
+        if ($node instanceof Twig_Node_AutoEscape) {
+            $this->statusStack[] = $node->getAttribute('value');
+        } elseif ($node instanceof Twig_Node_Block) {
+            $this->statusStack[] = isset($this->blocks[$node->getAttribute('name')]) ? $this->blocks[$node->getAttribute('name')] : $this->needEscaping($env);
+        }
+
+        return $node;
+    }
+
+    /**
+     * Called after child nodes are visited.
+     *
+     * @param Twig_NodeInterface $node The node to visit
+     * @param Twig_Environment   $env  The Twig environment instance
+     *
+     * @param Twig_NodeInterface The modified node
+     */
+    public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env)
+    {
+        if ($node instanceof Twig_Node_Expression_Filter) {
+            return $this->preEscapeFilterNode($node, $env);
+        } elseif ($node instanceof Twig_Node_Print) {
+            return $this->escapePrintNode($node, $env, $this->needEscaping($env));
+        }
+
+        if ($node instanceof Twig_Node_AutoEscape || $node instanceof Twig_Node_Block) {
+            array_pop($this->statusStack);
+        } elseif ($node instanceof Twig_Node_BlockReference) {
+            $this->blocks[$node->getAttribute('name')] = $this->needEscaping($env);
+        }
+
+        return $node;
+    }
+
+    protected function escapePrintNode(Twig_Node_Print $node, Twig_Environment $env, $type)
+    {
+        if (false === $type) {
+            return $node;
+        }
+
+        $expression = $node->getNode('expr');
+
+        if ($this->isSafeFor($type, $expression, $env)) {
+            return $node;
+        }
+
+        $class = get_class($node);
+
+        return new $class(
+            $this->getEscaperFilter($type, $expression),
+            $node->getLine()
+        );
+    }
+
+    protected function preEscapeFilterNode(Twig_Node_Expression_Filter $filter, Twig_Environment $env)
+    {
+        $name = $filter->getNode('filter')->getAttribute('value');
+
+        if (false !== $f = $env->getFilter($name)) {
+            $type = $f->getPreEscape();
+            if (null === $type) {
+                return $filter;
+            }
+
+            $node = $filter->getNode('node');
+            if ($this->isSafeFor($type, $node, $env)) {
+                return $filter;
+            }
+
+            $filter->setNode('node', $this->getEscaperFilter($type, $node));
+
+            return $filter;
+        }
+
+        return $filter;
+    }
+
+    protected function isSafeFor($type, Twig_NodeInterface $expression, $env)
+    {
+        $safe = $this->safeAnalysis->getSafe($expression);
+
+        if (null === $safe) {
+            if (null === $this->traverser) {
+                $this->traverser = new Twig_NodeTraverser($env, array($this->safeAnalysis));
+            }
+            $this->traverser->traverse($expression);
+            $safe = $this->safeAnalysis->getSafe($expression);
+        }
+
+        return in_array($type, $safe) || in_array('all', $safe);
+    }
+
+    protected function needEscaping(Twig_Environment $env)
+    {
+        if (count($this->statusStack)) {
+            return $this->statusStack[count($this->statusStack) - 1];
+        }
+
+        if ($env->hasExtension('escaper') && $env->getExtension('escaper')->isGlobal()) {
+            return 'html';
+        }
+
+        return false;
+    }
+
+    protected function getEscaperFilter($type, Twig_NodeInterface $node)
+    {
+        $line = $node->getLine();
+        $name = new Twig_Node_Expression_Constant('escape', $line);
+        $args = new Twig_Node(array(new Twig_Node_Expression_Constant((string) $type, $line)));
+        return new Twig_Node_Expression_Filter($node, $name, $args, $line);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getPriority()
+    {
+        return 0;
+    }
+}
diff --git a/inc/lib/Twig/NodeVisitor/Optimizer.php b/inc/lib/Twig/NodeVisitor/Optimizer.php
new file mode 100644
index 00000000..3679746e
--- /dev/null
+++ b/inc/lib/Twig/NodeVisitor/Optimizer.php
@@ -0,0 +1,190 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Twig_NodeVisitor_Optimizer tries to optimizes the AST.
+ *
+ * This visitor is always the last registered one.
+ *
+ * You can configure which optimizations you want to activate via the
+ * optimizer mode.
+ *
+ * @package twig
+ * @author  Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_NodeVisitor_Optimizer implements Twig_NodeVisitorInterface
+{
+    const OPTIMIZE_ALL         = -1;
+    const OPTIMIZE_NONE        = 0;
+    const OPTIMIZE_FOR         = 2;
+    const OPTIMIZE_RAW_FILTER  = 4;
+
+    protected $loops = array();
+    protected $optimizers;
+
+    /**
+     * Constructor.
+     *
+     * @param integer $optimizers The optimizer mode
+     */
+    public function __construct($optimizers = -1)
+    {
+        if (!is_int($optimizers) || $optimizers > 2) {
+            throw new InvalidArgumentException(sprintf('Optimizer mode "%s" is not valid.', $optimizers));
+        }
+
+        $this->optimizers = $optimizers;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function enterNode(Twig_NodeInterface $node, Twig_Environment $env)
+    {
+        if (self::OPTIMIZE_FOR === (self::OPTIMIZE_FOR & $this->optimizers)) {
+            $this->enterOptimizeFor($node, $env);
+        }
+
+        return $node;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env)
+    {
+        if (self::OPTIMIZE_FOR === (self::OPTIMIZE_FOR & $this->optimizers)) {
+            $this->leaveOptimizeFor($node, $env);
+        }
+
+        if (self::OPTIMIZE_RAW_FILTER === (self::OPTIMIZE_RAW_FILTER & $this->optimizers)) {
+            $node = $this->optimizeRawFilter($node, $env);
+        }
+
+        $node = $this->optimizeRenderBlock($node, $env);
+
+        return $node;
+    }
+
+    /**
+     * Replaces "echo $this->renderBlock()" with "$this->displayBlock()".
+     *
+     * @param Twig_NodeInterface $node A Node
+     * @param Twig_Environment   $env  The current Twig environment
+     */
+    protected function optimizeRenderBlock($node, $env)
+    {
+        if ($node instanceof Twig_Node_Print && $node->getNode('expr') instanceof Twig_Node_Expression_BlockReference) {
+            $node->getNode('expr')->setAttribute('output', true);
+
+            return $node->getNode('expr');
+        }
+
+        return $node;
+    }
+
+    /**
+     * Removes "raw" filters.
+     *
+     * @param Twig_NodeInterface $node A Node
+     * @param Twig_Environment   $env  The current Twig environment
+     */
+    protected function optimizeRawFilter($node, $env)
+    {
+        if ($node instanceof Twig_Node_Expression_Filter && 'raw' == $node->getNode('filter')->getAttribute('value')) {
+            return $node->getNode('node');
+        }
+
+        return $node;
+    }
+
+    /**
+     * Optimizes "for" tag by removing the "loop" variable creation whenever possible.
+     *
+     * @param Twig_NodeInterface $node A Node
+     * @param Twig_Environment   $env  The current Twig environment
+     */
+    protected function enterOptimizeFor($node, $env)
+    {
+        if ($node instanceof Twig_Node_For) {
+            // disable the loop variable by default
+            $node->setAttribute('with_loop', false);
+            array_unshift($this->loops, $node);
+        } elseif (!$this->loops) {
+            // we are outside a loop
+            return;
+        }
+
+        // when do we need to add the loop variable back?
+
+        // the loop variable is referenced for the current loop
+        elseif ($node instanceof Twig_Node_Expression_Name && 'loop' === $node->getAttribute('name')) {
+            $this->addLoopToCurrent();
+        }
+
+        // block reference
+        elseif ($node instanceof Twig_Node_BlockReference || $node instanceof Twig_Node_Expression_BlockReference) {
+            $this->addLoopToCurrent();
+        }
+
+        // include without the only attribute
+        elseif ($node instanceof Twig_Node_Include && !$node->getAttribute('only')) {
+            $this->addLoopToAll();
+        }
+
+        // the loop variable is referenced via an attribute
+        elseif ($node instanceof Twig_Node_Expression_GetAttr
+            && (!$node->getNode('attribute') instanceof Twig_Node_Expression_Constant
+                || 'parent' === $node->getNode('attribute')->getAttribute('value')
+               )
+            && (true === $this->loops[0]->getAttribute('with_loop')
+                || ($node->getNode('node') instanceof Twig_Node_Expression_Name
+                    && 'loop' === $node->getNode('node')->getAttribute('name')
+                   )
+               )
+        ) {
+            $this->addLoopToAll();
+        }
+    }
+
+    /**
+     * Optimizes "for" tag by removing the "loop" variable creation whenever possible.
+     *
+     * @param Twig_NodeInterface $node A Node
+     * @param Twig_Environment   $env  The current Twig environment
+     */
+    protected function leaveOptimizeFor($node, $env)
+    {
+        if ($node instanceof Twig_Node_For) {
+            array_shift($this->loops);
+        }
+    }
+
+    protected function addLoopToCurrent()
+    {
+        $this->loops[0]->setAttribute('with_loop', true);
+    }
+
+    protected function addLoopToAll()
+    {
+        foreach ($this->loops as $loop) {
+            $loop->setAttribute('with_loop', true);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getPriority()
+    {
+        return 255;
+    }
+}
diff --git a/inc/lib/Twig/NodeVisitor/SafeAnalysis.php b/inc/lib/Twig/NodeVisitor/SafeAnalysis.php
new file mode 100644
index 00000000..5961ba29
--- /dev/null
+++ b/inc/lib/Twig/NodeVisitor/SafeAnalysis.php
@@ -0,0 +1,107 @@
+<?php
+
+class Twig_NodeVisitor_SafeAnalysis implements Twig_NodeVisitorInterface
+{
+    protected $data = array();
+
+    public function getSafe(Twig_NodeInterface $node)
+    {
+        $hash = spl_object_hash($node);
+        if (isset($this->data[$hash])) {
+            foreach($this->data[$hash] as $bucket) {
+                if ($bucket['key'] === $node) {
+                    return $bucket['value'];
+                }
+            }
+        }
+        return null;
+    }
+
+    protected function setSafe(Twig_NodeInterface $node, array $safe)
+    {
+        $hash = spl_object_hash($node);
+        if (isset($this->data[$hash])) {
+            foreach($this->data[$hash] as &$bucket) {
+                if ($bucket['key'] === $node) {
+                    $bucket['value'] = $safe;
+                    return;
+                }
+            }
+        }
+        $this->data[$hash][] = array(
+            'key' => $node,
+            'value' => $safe,
+        );
+    }
+
+    public function enterNode(Twig_NodeInterface $node, Twig_Environment $env)
+    {
+        return $node;
+    }
+
+    public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env)
+    {
+        if ($node instanceof Twig_Node_Expression_Constant) {
+            // constants are marked safe for all
+            $this->setSafe($node, array('all'));
+        } elseif ($node instanceof Twig_Node_Expression_BlockReference) {
+            // blocks are safe by definition
+            $this->setSafe($node, array('all'));
+        } elseif ($node instanceof Twig_Node_Expression_Parent) {
+            // parent block is safe by definition
+            $this->setSafe($node, array('all'));
+        } elseif ($node instanceof Twig_Node_Expression_Conditional) {
+            // intersect safeness of both operands
+            $safe = $this->intersectSafe($this->getSafe($node->getNode('expr2')), $this->getSafe($node->getNode('expr3')));
+            $this->setSafe($node, $safe);
+        } elseif ($node instanceof Twig_Node_Expression_Filter) {
+            // filter expression is safe when the filter is safe
+            $name = $node->getNode('filter')->getAttribute('value');
+            $args = $node->getNode('arguments');
+            if (false !== $filter = $env->getFilter($name)) {
+                $this->setSafe($node, $filter->getSafe($args));
+            } else {
+                $this->setSafe($node, array());
+            }
+        } elseif ($node instanceof Twig_Node_Expression_Function) {
+            // function expression is safe when the function is safe
+            $name = $node->getAttribute('name');
+            $args = $node->getNode('arguments');
+            $function = $env->getFunction($name);
+            if (false !== $function) {
+                $this->setSafe($node, $function->getSafe($args));
+            } else {
+                $this->setSafe($node, array());
+            }
+        } else {
+            $this->setSafe($node, array());
+        }
+
+        return $node;
+    }
+
+    protected function intersectSafe(array $a = null, array $b = null)
+    {
+        if (null === $a || null === $b) {
+            return array();
+        }
+
+        if (in_array('all', $a)) {
+            return $b;
+        }
+
+        if (in_array('all', $b)) {
+            return $a;
+        }
+
+        return array_intersect($a, $b);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getPriority()
+    {
+        return 0;
+    }
+}
diff --git a/inc/lib/Twig/NodeVisitor/Sandbox.php b/inc/lib/Twig/NodeVisitor/Sandbox.php
new file mode 100644
index 00000000..356b661f
--- /dev/null
+++ b/inc/lib/Twig/NodeVisitor/Sandbox.php
@@ -0,0 +1,93 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Twig_NodeVisitor_Sandbox implements sandboxing.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_NodeVisitor_Sandbox implements Twig_NodeVisitorInterface
+{
+    protected $inAModule = false;
+    protected $tags;
+    protected $filters;
+    protected $functions;
+
+    /**
+     * Called before child nodes are visited.
+     *
+     * @param Twig_NodeInterface $node The node to visit
+     * @param Twig_Environment   $env  The Twig environment instance
+     *
+     * @param Twig_NodeInterface The modified node
+     */
+    public function enterNode(Twig_NodeInterface $node, Twig_Environment $env)
+    {
+        if ($node instanceof Twig_Node_Module) {
+            $this->inAModule = true;
+            $this->tags = array();
+            $this->filters = array();
+            $this->functions = array();
+
+            return $node;
+        } elseif ($this->inAModule) {
+            // look for tags
+            if ($node->getNodeTag()) {
+                $this->tags[] = $node->getNodeTag();
+            }
+
+            // look for filters
+            if ($node instanceof Twig_Node_Expression_Filter) {
+                $this->filters[] = $node->getNode('filter')->getAttribute('value');
+            }
+
+            // look for functions
+            if ($node instanceof Twig_Node_Expression_Function) {
+                $this->functions[] = $node->getAttribute('name');
+            }
+
+            // wrap print to check __toString() calls
+            if ($node instanceof Twig_Node_Print) {
+                return new Twig_Node_SandboxedPrint($node->getNode('expr'), $node->getLine(), $node->getNodeTag());
+            }
+        }
+
+        return $node;
+    }
+
+    /**
+     * Called after child nodes are visited.
+     *
+     * @param Twig_NodeInterface $node The node to visit
+     * @param Twig_Environment   $env  The Twig environment instance
+     *
+     * @param Twig_NodeInterface The modified node
+     */
+    public function leaveNode(Twig_NodeInterface $node, Twig_Environment $env)
+    {
+        if ($node instanceof Twig_Node_Module) {
+            $this->inAModule = false;
+
+            return new Twig_Node_SandboxedModule($node, array_unique($this->filters), array_unique($this->tags), array_unique($this->functions));
+        }
+
+        return $node;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getPriority()
+    {
+        return 0;
+    }
+}
diff --git a/inc/lib/Twig/NodeVisitorInterface.php b/inc/lib/Twig/NodeVisitorInterface.php
new file mode 100644
index 00000000..d44e510c
--- /dev/null
+++ b/inc/lib/Twig/NodeVisitorInterface.php
@@ -0,0 +1,48 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Twig_NodeVisitorInterface is the interface the all node visitor classes must implement.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_NodeVisitorInterface
+{
+    /**
+     * Called before child nodes are visited.
+     *
+     * @param Twig_NodeInterface $node The node to visit
+     * @param Twig_Environment   $env  The Twig environment instance
+     *
+     * @param Twig_NodeInterface The modified node
+     */
+    function enterNode(Twig_NodeInterface $node, Twig_Environment $env);
+
+    /**
+     * Called after child nodes are visited.
+     *
+     * @param Twig_NodeInterface $node The node to visit
+     * @param Twig_Environment   $env  The Twig environment instance
+     *
+     * @param Twig_NodeInterface The modified node
+     */
+    function leaveNode(Twig_NodeInterface $node, Twig_Environment $env);
+
+    /**
+     * Returns the priority for this visitor.
+     *
+     * Priority should be between -10 and 10 (0 is the default).
+     *
+     * @return integer The priority level
+     */
+    function getPriority();
+}
diff --git a/inc/lib/Twig/Parser.php b/inc/lib/Twig/Parser.php
new file mode 100644
index 00000000..8c982887
--- /dev/null
+++ b/inc/lib/Twig/Parser.php
@@ -0,0 +1,334 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Default parser implementation.
+ *
+ * @package twig
+ * @author  Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Parser implements Twig_ParserInterface
+{
+    protected $stream;
+    protected $parent;
+    protected $handlers;
+    protected $visitors;
+    protected $expressionParser;
+    protected $blocks;
+    protected $blockStack;
+    protected $macros;
+    protected $env;
+    protected $reservedMacroNames;
+    protected $importedFunctions;
+    protected $tmpVarCount;
+    protected $traits;
+
+    /**
+     * Constructor.
+     *
+     * @param Twig_Environment $env A Twig_Environment instance
+     */
+    public function __construct(Twig_Environment $env)
+    {
+        $this->env = $env;
+    }
+
+    public function getVarName()
+    {
+        return sprintf('__internal_%s_%d', substr($this->env->getTemplateClass($this->stream->getFilename()), strlen($this->env->getTemplateClassPrefix())), ++$this->tmpVarCount);
+    }
+
+    /**
+     * Converts a token stream to a node tree.
+     *
+     * @param  Twig_TokenStream $stream A token stream instance
+     *
+     * @return Twig_Node_Module A node tree
+     */
+    public function parse(Twig_TokenStream $stream)
+    {
+        $this->tmpVarCount = 0;
+
+        // tag handlers
+        $this->handlers = $this->env->getTokenParsers();
+        $this->handlers->setParser($this);
+
+        // node visitors
+        $this->visitors = $this->env->getNodeVisitors();
+
+        if (null === $this->expressionParser) {
+            $this->expressionParser = new Twig_ExpressionParser($this, $this->env->getUnaryOperators(), $this->env->getBinaryOperators());
+        }
+
+        $this->stream = $stream;
+        $this->parent = null;
+        $this->blocks = array();
+        $this->macros = array();
+        $this->traits = array();
+        $this->blockStack = array();
+        $this->importedFunctions = array(array());
+
+        try {
+            $body = $this->subparse(null);
+
+            if (null !== $this->parent) {
+                if (null === $body = $this->filterBodyNodes($body)) {
+                    $body = new Twig_Node();
+                }
+            }
+        } catch (Twig_Error_Syntax $e) {
+            if (null === $e->getTemplateFile()) {
+                $e->setTemplateFile($this->stream->getFilename());
+            }
+
+            throw $e;
+        }
+
+        $node = new Twig_Node_Module($body, $this->parent, new Twig_Node($this->blocks), new Twig_Node($this->macros), new Twig_Node($this->traits), $this->stream->getFilename());
+
+        $traverser = new Twig_NodeTraverser($this->env, $this->visitors);
+
+        return $traverser->traverse($node);
+    }
+
+    public function subparse($test, $dropNeedle = false)
+    {
+        $lineno = $this->getCurrentToken()->getLine();
+        $rv = array();
+        while (!$this->stream->isEOF()) {
+            switch ($this->getCurrentToken()->getType()) {
+                case Twig_Token::TEXT_TYPE:
+                    $token = $this->stream->next();
+                    $rv[] = new Twig_Node_Text($token->getValue(), $token->getLine());
+                    break;
+
+                case Twig_Token::VAR_START_TYPE:
+                    $token = $this->stream->next();
+                    $expr = $this->expressionParser->parseExpression();
+                    $this->stream->expect(Twig_Token::VAR_END_TYPE);
+                    $rv[] = new Twig_Node_Print($expr, $token->getLine());
+                    break;
+
+                case Twig_Token::BLOCK_START_TYPE:
+                    $this->stream->next();
+                    $token = $this->getCurrentToken();
+
+                    if ($token->getType() !== Twig_Token::NAME_TYPE) {
+                        throw new Twig_Error_Syntax('A block must start with a tag name', $token->getLine(), $this->stream->getFilename());
+                    }
+
+                    if (null !== $test && call_user_func($test, $token)) {
+                        if ($dropNeedle) {
+                            $this->stream->next();
+                        }
+
+                        if (1 === count($rv)) {
+                            return $rv[0];
+                        }
+
+                        return new Twig_Node($rv, array(), $lineno);
+                    }
+
+                    $subparser = $this->handlers->getTokenParser($token->getValue());
+                    if (null === $subparser) {
+                        if (null !== $test) {
+                            throw new Twig_Error_Syntax(sprintf('Unexpected tag name "%s" (expecting closing tag for the "%s" tag defined near line %s)', $token->getValue(), $test[0]->getTag(), $lineno), $token->getLine(), $this->stream->getFilename());
+                        }
+
+                        throw new Twig_Error_Syntax(sprintf('Unknown tag name "%s"', $token->getValue()), $token->getLine(), $this->stream->getFilename());
+                    }
+
+                    $this->stream->next();
+
+                    $node = $subparser->parse($token);
+                    if (null !== $node) {
+                        $rv[] = $node;
+                    }
+                    break;
+
+                default:
+                    throw new Twig_Error_Syntax('Lexer or parser ended up in unsupported state.', -1, $this->stream->getFilename());
+            }
+        }
+
+        if (1 === count($rv)) {
+            return $rv[0];
+        }
+
+        return new Twig_Node($rv, array(), $lineno);
+    }
+
+    public function addHandler($name, $class)
+    {
+        $this->handlers[$name] = $class;
+    }
+
+    public function addNodeVisitor(Twig_NodeVisitorInterface $visitor)
+    {
+        $this->visitors[] = $visitor;
+    }
+
+    public function getBlockStack()
+    {
+        return $this->blockStack;
+    }
+
+    public function peekBlockStack()
+    {
+        return $this->blockStack[count($this->blockStack) - 1];
+    }
+
+    public function popBlockStack()
+    {
+        array_pop($this->blockStack);
+    }
+
+    public function pushBlockStack($name)
+    {
+        $this->blockStack[] = $name;
+    }
+
+    public function hasBlock($name)
+    {
+        return isset($this->blocks[$name]);
+    }
+
+    public function setBlock($name, $value)
+    {
+        $this->blocks[$name] = $value;
+    }
+
+    public function hasMacro($name)
+    {
+        return isset($this->macros[$name]);
+    }
+
+    public function setMacro($name, Twig_Node_Macro $node)
+    {
+        if (null === $this->reservedMacroNames) {
+            $this->reservedMacroNames = array();
+            $r = new ReflectionClass($this->env->getBaseTemplateClass());
+            foreach ($r->getMethods() as $method) {
+                $this->reservedMacroNames[] = $method->getName();
+            }
+        }
+
+        if (in_array($name, $this->reservedMacroNames)) {
+            throw new Twig_Error_Syntax(sprintf('"%s" cannot be used as a macro name as it is a reserved keyword', $name), $node->getLine());
+        }
+
+        $this->macros[$name] = $node;
+    }
+
+    public function addTrait($trait)
+    {
+        $this->traits[] = $trait;
+    }
+
+    public function addImportedFunction($alias, $name, Twig_Node_Expression $node)
+    {
+        $this->importedFunctions[0][$alias] = array('name' => $name, 'node' => $node);
+    }
+
+    public function getImportedFunction($alias)
+    {
+        foreach ($this->importedFunctions as $functions) {
+            if (isset($functions[$alias])) {
+                return $functions[$alias];
+            }
+        }
+    }
+
+    public function isMainScope()
+    {
+        return 1 === count($this->importedFunctions);
+    }
+
+    public function pushLocalScope()
+    {
+        array_unshift($this->importedFunctions, array());
+    }
+
+    public function popLocalScope()
+    {
+        array_shift($this->importedFunctions);
+    }
+
+    /**
+     * Gets the expression parser.
+     *
+     * @return Twig_ExpressionParser The expression parser
+     */
+    public function getExpressionParser()
+    {
+        return $this->expressionParser;
+    }
+
+    public function getParent()
+    {
+        return $this->parent;
+    }
+
+    public function setParent($parent)
+    {
+        $this->parent = $parent;
+    }
+
+    /**
+     * Gets the token stream.
+     *
+     * @return Twig_TokenStream The token stream
+     */
+    public function getStream()
+    {
+        return $this->stream;
+    }
+
+    /**
+     * Gets the current token.
+     *
+     * @return Twig_Token The current token
+     */
+    public function getCurrentToken()
+    {
+        return $this->stream->getCurrent();
+    }
+
+    protected function filterBodyNodes(Twig_NodeInterface $node)
+    {
+        // check that the body does not contain non-empty output nodes
+        if (
+            ($node instanceof Twig_Node_Text && !ctype_space($node->getAttribute('data')))
+            ||
+            (!$node instanceof Twig_Node_Text && !$node instanceof Twig_Node_BlockReference && $node instanceof Twig_NodeOutputInterface)
+        ) {
+            throw new Twig_Error_Syntax('A template that extends another one cannot have a body.', $node->getLine(), $this->stream->getFilename());
+        }
+
+        // bypass "set" nodes as they "capture" the output
+        if ($node instanceof Twig_Node_Set) {
+            return $node;
+        }
+
+        if ($node instanceof Twig_NodeOutputInterface) {
+            return;
+        }
+
+        foreach ($node as $k => $n) {
+            if (null !== $n && null === $n = $this->filterBodyNodes($n)) {
+                $node->removeNode($k);
+            }
+        }
+
+        return $node;
+    }
+}
diff --git a/inc/lib/Twig/ParserInterface.php b/inc/lib/Twig/ParserInterface.php
new file mode 100644
index 00000000..c7a34418
--- /dev/null
+++ b/inc/lib/Twig/ParserInterface.php
@@ -0,0 +1,28 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Interface implemented by parser classes.
+ *
+ * @package twig
+ * @author  Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_ParserInterface
+{
+    /**
+     * Converts a token stream to a node tree.
+     *
+     * @param  Twig_TokenStream $stream A token stream instance
+     *
+     * @return Twig_Node_Module A node tree
+     */
+    function parse(Twig_TokenStream $code);
+}
diff --git a/inc/lib/Twig/Sandbox/SecurityError.php b/inc/lib/Twig/Sandbox/SecurityError.php
new file mode 100644
index 00000000..debabb79
--- /dev/null
+++ b/inc/lib/Twig/Sandbox/SecurityError.php
@@ -0,0 +1,20 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Exception thrown when a security error occurs at runtime.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Sandbox_SecurityError extends Twig_Error
+{
+}
diff --git a/inc/lib/Twig/Sandbox/SecurityPolicy.php b/inc/lib/Twig/Sandbox/SecurityPolicy.php
new file mode 100644
index 00000000..ba912ef4
--- /dev/null
+++ b/inc/lib/Twig/Sandbox/SecurityPolicy.php
@@ -0,0 +1,120 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a security policy which need to be enforced when sandbox mode is enabled.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Sandbox_SecurityPolicy implements Twig_Sandbox_SecurityPolicyInterface
+{
+    protected $allowedTags;
+    protected $allowedFilters;
+    protected $allowedMethods;
+    protected $allowedProperties;
+    protected $allowedFunctions;
+
+    public function __construct(array $allowedTags = array(), array $allowedFilters = array(), array $allowedMethods = array(), array $allowedProperties = array(), array $allowedFunctions = array())
+    {
+        $this->allowedTags = $allowedTags;
+        $this->allowedFilters = $allowedFilters;
+        $this->setAllowedMethods($allowedMethods);
+        $this->allowedProperties = $allowedProperties;
+        $this->allowedFunctions = $allowedFunctions;
+    }
+
+    public function setAllowedTags(array $tags)
+    {
+        $this->allowedTags = $tags;
+    }
+
+    public function setAllowedFilters(array $filters)
+    {
+        $this->allowedFilters = $filters;
+    }
+
+    public function setAllowedMethods(array $methods)
+    {
+        $this->allowedMethods = array();
+        foreach ($methods as $class => $m) {
+            $this->allowedMethods[$class] = array_map('strtolower', is_array($m) ? $m : array($m));
+        }
+    }
+
+    public function setAllowedProperties(array $properties)
+    {
+        $this->allowedProperties = $properties;
+    }
+
+    public function setAllowedFunctions(array $functions)
+    {
+        $this->allowedFunctions = $functions;
+    }
+
+    public function checkSecurity($tags, $filters, $functions)
+    {
+        foreach ($tags as $tag) {
+            if (!in_array($tag, $this->allowedTags)) {
+                throw new Twig_Sandbox_SecurityError(sprintf('Tag "%s" is not allowed.', $tag));
+            }
+        }
+
+        foreach ($filters as $filter) {
+            if (!in_array($filter, $this->allowedFilters)) {
+                throw new Twig_Sandbox_SecurityError(sprintf('Filter "%s" is not allowed.', $filter));
+            }
+        }
+
+        foreach ($functions as $function) {
+            if (!in_array($function, $this->allowedFunctions)) {
+                throw new Twig_Sandbox_SecurityError(sprintf('Function "%s" is not allowed.', $function));
+            }
+        }
+    }
+
+    public function checkMethodAllowed($obj, $method)
+    {
+        if ($obj instanceof Twig_TemplateInterface || $obj instanceof Twig_Markup) {
+            return true;
+        }
+
+        $allowed = false;
+        $method = strtolower($method);
+        foreach ($this->allowedMethods as $class => $methods) {
+            if ($obj instanceof $class) {
+                $allowed = in_array($method, $methods);
+
+                break;
+            }
+        }
+
+        if (!$allowed) {
+            throw new Twig_Sandbox_SecurityError(sprintf('Calling "%s" method on a "%s" object is not allowed.', $method, get_class($obj)));
+        }
+    }
+
+    public function checkPropertyAllowed($obj, $property)
+    {
+        $allowed = false;
+        foreach ($this->allowedProperties as $class => $properties) {
+            if ($obj instanceof $class) {
+                $allowed = in_array($property, is_array($properties) ? $properties : array($properties));
+
+                break;
+            }
+        }
+
+        if (!$allowed) {
+            throw new Twig_Sandbox_SecurityError(sprintf('Calling "%s" property on a "%s" object is not allowed.', $property, get_class($obj)));
+        }
+    }
+}
diff --git a/inc/lib/Twig/Sandbox/SecurityPolicyInterface.php b/inc/lib/Twig/Sandbox/SecurityPolicyInterface.php
new file mode 100644
index 00000000..d5015aff
--- /dev/null
+++ b/inc/lib/Twig/Sandbox/SecurityPolicyInterface.php
@@ -0,0 +1,25 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Interfaces that all security policy classes must implements.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_Sandbox_SecurityPolicyInterface
+{
+    function checkSecurity($tags, $filters, $functions);
+
+    function checkMethodAllowed($obj, $method);
+
+    function checkPropertyAllowed($obj, $method);
+}
diff --git a/inc/lib/Twig/Template.php b/inc/lib/Twig/Template.php
new file mode 100644
index 00000000..a129fd73
--- /dev/null
+++ b/inc/lib/Twig/Template.php
@@ -0,0 +1,374 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Default base class for compiled templates.
+ *
+ * @package twig
+ * @author  Fabien Potencier <fabien@symfony.com>
+ */
+abstract class Twig_Template implements Twig_TemplateInterface
+{
+    static protected $cache = array();
+
+    protected $parents;
+    protected $env;
+    protected $blocks;
+
+    /**
+     * Constructor.
+     *
+     * @param Twig_Environment $env A Twig_Environment instance
+     */
+    public function __construct(Twig_Environment $env)
+    {
+        $this->env = $env;
+        $this->blocks = array();
+    }
+
+    /**
+     * Returns the template name.
+     *
+     * @return string The template name
+     */
+    abstract public function getTemplateName();
+
+    /**
+     * Returns the Twig environment.
+     *
+     * @return Twig_Environment The Twig environment
+     */
+    public function getEnvironment()
+    {
+        return $this->env;
+    }
+
+    /**
+     * Returns the parent template.
+     *
+     * @return Twig_TemplateInterface|false The parent template or false if there is no parent
+     */
+    public function getParent(array $context)
+    {
+        $parent = $this->doGetParent($context);
+        if (false === $parent) {
+            return false;
+        } elseif ($parent instanceof Twig_Template) {
+            $name = $parent->getTemplateName();
+            $this->parents[$name] = $parent;
+            $parent = $name;
+        } elseif (!isset($this->parents[$parent])) {
+            $this->parents[$parent] = $this->env->loadTemplate($parent);
+        }
+
+        return $this->parents[$parent];
+    }
+
+    abstract protected function doGetParent(array $context);
+
+    /**
+     * Displays a parent block.
+     *
+     * @param string $name    The block name to display from the parent
+     * @param array  $context The context
+     * @param array  $blocks  The current set of blocks
+     */
+    public function displayParentBlock($name, array $context, array $blocks = array())
+    {
+        if (false !== $parent = $this->getParent($context)) {
+            $parent->displayBlock($name, $context, $blocks);
+        } else {
+            throw new Twig_Error_Runtime('This template has no parent', -1, $this->getTemplateName());
+        }
+    }
+
+    /**
+     * Displays a block.
+     *
+     * @param string $name    The block name to display
+     * @param array  $context The context
+     * @param array  $blocks  The current set of blocks
+     */
+    public function displayBlock($name, array $context, array $blocks = array())
+    {
+        if (isset($blocks[$name])) {
+            $b = $blocks;
+            unset($b[$name]);
+            call_user_func($blocks[$name], $context, $b);
+        } elseif (isset($this->blocks[$name])) {
+            call_user_func($this->blocks[$name], $context, $blocks);
+        } elseif (false !== $parent = $this->getParent($context)) {
+            $parent->displayBlock($name, $context, array_merge($this->blocks, $blocks));
+        }
+    }
+
+    /**
+     * Renders a parent block.
+     *
+     * @param string $name    The block name to render from the parent
+     * @param array  $context The context
+     * @param array  $blocks  The current set of blocks
+     *
+     * @return string The rendered block
+     */
+    public function renderParentBlock($name, array $context, array $blocks = array())
+    {
+        ob_start();
+        $this->displayParentBlock($name, $context, $blocks);
+
+        return ob_get_clean();
+    }
+
+    /**
+     * Renders a block.
+     *
+     * @param string $name    The block name to render
+     * @param array  $context The context
+     * @param array  $blocks  The current set of blocks
+     *
+     * @return string The rendered block
+     */
+    public function renderBlock($name, array $context, array $blocks = array())
+    {
+        ob_start();
+        $this->displayBlock($name, $context, $blocks);
+
+        return ob_get_clean();
+    }
+
+    /**
+     * Returns whether a block exists or not.
+     *
+     * @param string $name The block name
+     *
+     * @return Boolean true if the block exists, false otherwise
+     */
+    public function hasBlock($name)
+    {
+        return isset($this->blocks[$name]);
+    }
+
+    /**
+     * Returns all block names.
+     *
+     * @return array An array of block names
+     */
+    public function getBlockNames()
+    {
+        return array_keys($this->blocks);
+    }
+
+    /**
+     * Returns all blocks.
+     *
+     * @return array An array of blocks
+     */
+    public function getBlocks()
+    {
+        return $this->blocks;
+    }
+
+    /**
+     * Displays the template with the given context.
+     *
+     * @param array $context An array of parameters to pass to the template
+     * @param array $blocks  An array of blocks to pass to the template
+     */
+    public function display(array $context, array $blocks = array())
+    {
+        try {
+            $this->doDisplay($context, $blocks);
+        } catch (Twig_Error $e) {
+            throw $e;
+        } catch (Exception $e) {
+            throw new Twig_Error_Runtime(sprintf('An exception has been thrown during the rendering of a template ("%s").', $e->getMessage()), -1, null, $e);
+        }
+    }
+
+    /**
+     * Renders the template with the given context and returns it as string.
+     *
+     * @param array $context An array of parameters to pass to the template
+     *
+     * @return string The rendered template
+     */
+    public function render(array $context)
+    {
+        $level = ob_get_level();
+        ob_start();
+        try {
+            $this->display($context);
+        } catch (Exception $e) {
+            while (ob_get_level() > $level) {
+                ob_end_clean();
+            }
+
+            throw $e;
+        }
+
+        return ob_get_clean();
+    }
+
+    /**
+     * Auto-generated method to display the template with the given context.
+     *
+     * @param array $context An array of parameters to pass to the template
+     * @param array $blocks  An array of blocks to pass to the template
+     */
+    abstract protected function doDisplay(array $context, array $blocks = array());
+
+    /**
+     * Returns a variable from the context.
+     *
+     * @param array   $context The context
+     * @param string  $item    The variable to return from the context
+     *
+     * @return The content of the context variable
+     *
+     * @throws Twig_Error_Runtime if the variable does not exist and Twig is running in strict mode
+     */
+    protected function getContext($context, $item)
+    {
+        if (!array_key_exists($item, $context)) {
+            if (!$this->env->isStrictVariables()) {
+                return null;
+            }
+
+            throw new Twig_Error_Runtime(sprintf('Variable "%s" does not exist', $item));
+        }
+
+        return $context[$item];
+    }
+
+    /**
+     * Returns the attribute value for a given array/object.
+     *
+     * @param mixed   $object        The object or array from where to get the item
+     * @param mixed   $item          The item to get from the array or object
+     * @param array   $arguments     An array of arguments to pass if the item is an object method
+     * @param string  $type          The type of attribute (@see Twig_TemplateInterface)
+     * @param Boolean $isDefinedTest Whether this is only a defined check
+     */
+    protected function getAttribute($object, $item, array $arguments = array(), $type = Twig_TemplateInterface::ANY_CALL, $isDefinedTest = false)
+    {
+        // array
+        if (Twig_TemplateInterface::METHOD_CALL !== $type) {
+            if ((is_array($object) && array_key_exists($item, $object))
+                || ($object instanceof ArrayAccess && isset($object[$item]))
+            ) {
+                if ($isDefinedTest) {
+                    return true;
+                }
+
+                return $object[$item];
+            }
+
+            if (Twig_TemplateInterface::ARRAY_CALL === $type) {
+                if ($isDefinedTest) {
+                    return false;
+                }
+
+                if (!$this->env->isStrictVariables()) {
+                    return null;
+                }
+
+                if (is_object($object)) {
+                    throw new Twig_Error_Runtime(sprintf('Key "%s" in object (with ArrayAccess) of type "%s" does not exist', $item, get_class($object)));
+                // array
+                } else {
+                    throw new Twig_Error_Runtime(sprintf('Key "%s" for array with keys "%s" does not exist', $item, implode(', ', array_keys($object))));
+                }
+            }
+        }
+
+        if (!is_object($object)) {
+            if ($isDefinedTest) {
+                return false;
+            }
+
+            if (!$this->env->isStrictVariables()) {
+                return null;
+            }
+
+            throw new Twig_Error_Runtime(sprintf('Item "%s" for "%s" does not exist', $item, $object));
+        }
+
+        // get some information about the object
+        $class = get_class($object);
+        if (!isset(self::$cache[$class])) {
+            $r = new ReflectionClass($class);
+            self::$cache[$class] = array('methods' => array(), 'properties' => array());
+            foreach ($r->getMethods(ReflectionMethod::IS_PUBLIC) as $method) {
+                self::$cache[$class]['methods'][strtolower($method->getName())] = true;
+            }
+
+            foreach ($r->getProperties(ReflectionProperty::IS_PUBLIC) as $property) {
+                self::$cache[$class]['properties'][$property->getName()] = true;
+            }
+        }
+
+        // object property
+        if (Twig_TemplateInterface::METHOD_CALL !== $type) {
+            if (isset(self::$cache[$class]['properties'][$item])
+                || isset($object->$item) || array_key_exists($item, $object)
+            ) {
+                if ($isDefinedTest) {
+                    return true;
+                }
+
+                if ($this->env->hasExtension('sandbox')) {
+                    $this->env->getExtension('sandbox')->checkPropertyAllowed($object, $item);
+                }
+
+                return $object->$item;
+            }
+        }
+
+        // object method
+        $lcItem = strtolower($item);
+        if (isset(self::$cache[$class]['methods'][$lcItem])) {
+            $method = $item;
+        } elseif (isset(self::$cache[$class]['methods']['get'.$lcItem])) {
+            $method = 'get'.$item;
+        } elseif (isset(self::$cache[$class]['methods']['is'.$lcItem])) {
+            $method = 'is'.$item;
+        } elseif (isset(self::$cache[$class]['methods']['__call'])) {
+            $method = $item;
+        } else {
+            if ($isDefinedTest) {
+                return false;
+            }
+
+            if (!$this->env->isStrictVariables()) {
+                return null;
+            }
+
+            throw new Twig_Error_Runtime(sprintf('Method "%s" for object "%s" does not exist', $item, get_class($object)));
+        }
+
+        if ($isDefinedTest) {
+            return true;
+        }
+
+        if ($this->env->hasExtension('sandbox')) {
+            $this->env->getExtension('sandbox')->checkMethodAllowed($object, $method);
+        }
+
+        $ret = call_user_func_array(array($object, $method), $arguments);
+
+        if ($object instanceof Twig_TemplateInterface) {
+            return new Twig_Markup($ret);
+        }
+
+        return $ret;
+    }
+}
diff --git a/inc/lib/Twig/TemplateInterface.php b/inc/lib/Twig/TemplateInterface.php
new file mode 100644
index 00000000..08da1163
--- /dev/null
+++ b/inc/lib/Twig/TemplateInterface.php
@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Interface implemented by all compiled templates.
+ *
+ * @package twig
+ * @author  Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_TemplateInterface
+{
+    const ANY_CALL    = 'any';
+    const ARRAY_CALL  = 'array';
+    const METHOD_CALL = 'method';
+
+    /**
+     * Renders the template with the given context and returns it as string.
+     *
+     * @param array $context An array of parameters to pass to the template
+     *
+     * @return string The rendered template
+     */
+    function render(array $context);
+
+    /**
+     * Displays the template with the given context.
+     *
+     * @param array $context An array of parameters to pass to the template
+     * @param array $blocks  An array of blocks to pass to the template
+     */
+    function display(array $context, array $blocks = array());
+
+    /**
+     * Returns the bound environment for this template.
+     *
+     * @return Twig_Environment The current environment
+     */
+    function getEnvironment();
+}
diff --git a/inc/lib/Twig/Test/Function.php b/inc/lib/Twig/Test/Function.php
new file mode 100644
index 00000000..1240a0f1
--- /dev/null
+++ b/inc/lib/Twig/Test/Function.php
@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a function template test.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Test_Function implements Twig_TestInterface
+{
+    protected $function;
+
+    public function __construct($function)
+    {
+        $this->function = $function;
+    }
+
+    public function compile()
+    {
+        return $this->function;
+    }
+}
diff --git a/inc/lib/Twig/Test/Method.php b/inc/lib/Twig/Test/Method.php
new file mode 100644
index 00000000..a3b39483
--- /dev/null
+++ b/inc/lib/Twig/Test/Method.php
@@ -0,0 +1,32 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a method template test.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Test_Method implements Twig_TestInterface
+{
+    protected $extension, $method;
+
+    public function __construct(Twig_ExtensionInterface $extension, $method)
+    {
+        $this->extension = $extension;
+        $this->method = $method;
+    }
+
+    public function compile()
+    {
+        return sprintf('$this->env->getExtension(\'%s\')->%s', $this->extension->getName(), $this->method);
+    }
+}
diff --git a/inc/lib/Twig/TestInterface.php b/inc/lib/Twig/TestInterface.php
new file mode 100644
index 00000000..c2ff7258
--- /dev/null
+++ b/inc/lib/Twig/TestInterface.php
@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a template test.
+ *
+ * @package    twig
+ * @author     Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_TestInterface
+{
+    /**
+     * Compiles a test.
+     *
+     * @return string The PHP code for the test
+     */
+    function compile();
+}
diff --git a/inc/lib/Twig/Token.php b/inc/lib/Twig/Token.php
new file mode 100644
index 00000000..79a10030
--- /dev/null
+++ b/inc/lib/Twig/Token.php
@@ -0,0 +1,206 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a Token.
+ *
+ * @package twig
+ * @author  Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_Token
+{
+    protected $value;
+    protected $type;
+    protected $lineno;
+
+    const EOF_TYPE         = -1;
+    const TEXT_TYPE        = 0;
+    const BLOCK_START_TYPE = 1;
+    const VAR_START_TYPE   = 2;
+    const BLOCK_END_TYPE   = 3;
+    const VAR_END_TYPE     = 4;
+    const NAME_TYPE        = 5;
+    const NUMBER_TYPE      = 6;
+    const STRING_TYPE      = 7;
+    const OPERATOR_TYPE    = 8;
+    const PUNCTUATION_TYPE = 9;
+
+    /**
+     * Constructor.
+     *
+     * @param integer $type   The type of the token
+     * @param string  $value  The token value
+     * @param integer $lineno The line position in the source
+     */
+    public function __construct($type, $value, $lineno)
+    {
+        $this->type   = $type;
+        $this->value  = $value;
+        $this->lineno = $lineno;
+    }
+
+    /**
+     * Returns a string representation of the token.
+     *
+     * @return string A string representation of the token
+     */
+    public function __toString()
+    {
+        return sprintf('%s(%s)', self::typeToString($this->type, true, $this->lineno), $this->value);
+    }
+
+    /**
+     * Tests the current token for a type and/or a value.
+     *
+     * Parameters may be:
+     * * just type
+     * * type and value (or array of possible values)
+     * * just value (or array of possible values) (NAME_TYPE is used as type)
+     *
+     * @param array|integer     $type   The type to test
+     * @param array|string|null $values The token value
+     *
+     * @return Boolean
+     */
+    public function test($type, $values = null)
+    {
+        if (null === $values && !is_int($type)) {
+            $values = $type;
+            $type = self::NAME_TYPE;
+        }
+
+        return ($this->type === $type) && (
+            null === $values ||
+            (is_array($values) && in_array($this->value, $values)) ||
+            $this->value == $values
+        );
+    }
+
+    /**
+     * Gets the line.
+     *
+     * @return integer The source line
+     */
+    public function getLine()
+    {
+        return $this->lineno;
+    }
+
+    /**
+     * Gets the token type.
+     *
+     * @return integer The token type
+     */
+    public function getType()
+    {
+        return $this->type;
+    }
+
+    /**
+     * Gets the token value.
+     *
+     * @return string The token value
+     */
+    public function getValue()
+    {
+        return $this->value;
+    }
+
+    /**
+     * Returns the constant representation (internal) of a given type.
+     *
+     * @param integer $type  The type as an integer
+     * @param Boolean $short Whether to return a short representation or not
+     *
+     * @return string The string representation
+     */
+    static public function typeToString($type, $short = false, $line = -1)
+    {
+        switch ($type) {
+            case self::EOF_TYPE:
+                $name = 'EOF_TYPE';
+                break;
+            case self::TEXT_TYPE:
+                $name = 'TEXT_TYPE';
+                break;
+            case self::BLOCK_START_TYPE:
+                $name = 'BLOCK_START_TYPE';
+                break;
+            case self::VAR_START_TYPE:
+                $name = 'VAR_START_TYPE';
+                break;
+            case self::BLOCK_END_TYPE:
+                $name = 'BLOCK_END_TYPE';
+                break;
+            case self::VAR_END_TYPE:
+                $name = 'VAR_END_TYPE';
+                break;
+            case self::NAME_TYPE:
+                $name = 'NAME_TYPE';
+                break;
+            case self::NUMBER_TYPE:
+                $name = 'NUMBER_TYPE';
+                break;
+            case self::STRING_TYPE:
+                $name = 'STRING_TYPE';
+                break;
+            case self::OPERATOR_TYPE:
+                $name = 'OPERATOR_TYPE';
+                break;
+            case self::PUNCTUATION_TYPE:
+                $name = 'PUNCTUATION_TYPE';
+                break;
+            default:
+                throw new Twig_Error_Syntax(sprintf('Token of type "%s" does not exist.', $type), $line);
+        }
+
+        return $short ? $name : 'Twig_Token::'.$name;
+    }
+
+    /**
+     * Returns the english representation of a given type.
+     *
+     * @param integer $type  The type as an integer
+     * @param Boolean $short Whether to return a short representation or not
+     *
+     * @return string The string representation
+     */
+    static public function typeToEnglish($type, $line = -1)
+    {
+        switch ($type) {
+            case self::EOF_TYPE:
+                return 'end of template';
+            case self::TEXT_TYPE:
+                return 'text';
+            case self::BLOCK_START_TYPE:
+                return 'begin of statement block';
+            case self::VAR_START_TYPE:
+                return 'begin of print statement';
+            case self::BLOCK_END_TYPE:
+                return 'end of statement block';
+            case self::VAR_END_TYPE:
+                return 'end of print statement';
+            case self::NAME_TYPE:
+                return 'name';
+            case self::NUMBER_TYPE:
+                return 'number';
+            case self::STRING_TYPE:
+                return 'string';
+            case self::OPERATOR_TYPE:
+                return 'operator';
+            case self::PUNCTUATION_TYPE:
+                return 'punctuation';
+            default:
+                throw new Twig_Error_Syntax(sprintf('Token of type "%s" does not exist.', $type), $line);
+        }
+    }
+}
diff --git a/inc/lib/Twig/TokenParser.php b/inc/lib/Twig/TokenParser.php
new file mode 100644
index 00000000..6c9e6935
--- /dev/null
+++ b/inc/lib/Twig/TokenParser.php
@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Base class for all token parsers.
+ *
+ * @package twig
+ * @author  Fabien Potencier <fabien@symfony.com>
+ */
+abstract class Twig_TokenParser implements Twig_TokenParserInterface
+{
+    protected $parser;
+
+    /**
+     * Sets the parser associated with this token parser
+     *
+     * @param $parser A Twig_Parser instance
+     */
+    public function setParser(Twig_Parser $parser)
+    {
+        $this->parser = $parser;
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/AutoEscape.php b/inc/lib/Twig/TokenParser/AutoEscape.php
new file mode 100644
index 00000000..3b4b96e3
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/AutoEscape.php
@@ -0,0 +1,77 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Marks a section of a template to be escaped or not.
+ *
+ * <pre>
+ * {% autoescape true %}
+ *   Everything will be automatically escaped in this block
+ * {% endautoescape %}
+ *
+ * {% autoescape false %}
+ *   Everything will be outputed as is in this block
+ * {% endautoescape %}
+ *
+ * {% autoescape true js %}
+ *   Everything will be automatically escaped in this block
+ *   using the js escaping strategy
+ * {% endautoescape %}
+ * </pre>
+ */
+class Twig_TokenParser_AutoEscape extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $lineno = $token->getLine();
+        $value = $this->parser->getStream()->expect(Twig_Token::NAME_TYPE)->getValue();
+        if (!in_array($value, array('true', 'false'))) {
+            throw new Twig_Error_Syntax("Autoescape value must be 'true' or 'false'", $lineno);
+        }
+        $value = 'true' === $value ? 'html' : false;
+
+        if ($this->parser->getStream()->test(Twig_Token::NAME_TYPE)) {
+            if (false === $value) {
+                throw new Twig_Error_Syntax('Unexpected escaping strategy as you set autoescaping to false.', $lineno);
+            }
+
+            $value = $this->parser->getStream()->next()->getValue();
+        }
+
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+        $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+
+        return new Twig_Node_AutoEscape($value, $body, $lineno, $this->getTag());
+    }
+
+    public function decideBlockEnd(Twig_Token $token)
+    {
+        return $token->test('endautoescape');
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'autoescape';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/Block.php b/inc/lib/Twig/TokenParser/Block.php
new file mode 100644
index 00000000..b31f7ed6
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/Block.php
@@ -0,0 +1,83 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Marks a section of a template as being reusable.
+ *
+ * <pre>
+ *  {% block head %}
+ *    <link rel="stylesheet" href="style.css" />
+ *    <title>{% block title %}{% endblock %} - My Webpage</title>
+ *  {% endblock %}
+ * </pre>
+ */
+class Twig_TokenParser_Block extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $lineno = $token->getLine();
+        $stream = $this->parser->getStream();
+        $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
+        if ($this->parser->hasBlock($name)) {
+            throw new Twig_Error_Syntax("The block '$name' has already been defined", $lineno);
+        }
+        $this->parser->pushLocalScope();
+        $this->parser->pushBlockStack($name);
+
+        if ($stream->test(Twig_Token::BLOCK_END_TYPE)) {
+            $stream->next();
+
+            $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
+            if ($stream->test(Twig_Token::NAME_TYPE)) {
+                $value = $stream->next()->getValue();
+
+                if ($value != $name) {
+                    throw new Twig_Error_Syntax(sprintf("Expected endblock for block '$name' (but %s given)", $value), $lineno);
+                }
+            }
+        } else {
+            $body = new Twig_Node(array(
+                new Twig_Node_Print($this->parser->getExpressionParser()->parseExpression(), $lineno),
+            ));
+        }
+        $stream->expect(Twig_Token::BLOCK_END_TYPE);
+
+        $block = new Twig_Node_Block($name, $body, $lineno);
+        $this->parser->setBlock($name, $block);
+        $this->parser->popBlockStack();
+        $this->parser->popLocalScope();
+
+        return new Twig_Node_BlockReference($name, $lineno, $this->getTag());
+    }
+
+    public function decideBlockEnd(Twig_Token $token)
+    {
+        return $token->test('endblock');
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'block';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/Extends.php b/inc/lib/Twig/TokenParser/Extends.php
new file mode 100644
index 00000000..67eacda0
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/Extends.php
@@ -0,0 +1,54 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Extends a template by another one.
+ *
+ * <pre>
+ *  {% extends "base.html" %}
+ * </pre>
+ */
+class Twig_TokenParser_Extends extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        if (!$this->parser->isMainScope()) {
+            throw new Twig_Error_Syntax('Cannot extend from a block', $token->getLine());
+        }
+
+        if (null !== $this->parser->getParent()) {
+            throw new Twig_Error_Syntax('Multiple extends tags are forbidden', $token->getLine());
+        }
+        $this->parser->setParent($this->parser->getExpressionParser()->parseExpression());
+
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+
+        return null;
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'extends';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/Filter.php b/inc/lib/Twig/TokenParser/Filter.php
new file mode 100644
index 00000000..0969ab1e
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/Filter.php
@@ -0,0 +1,61 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Filters a section of a template by applying filters.
+ *
+ * <pre>
+ * {% filter upper %}
+ *  This text becomes uppercase
+ * {% endfilter %}
+ * </pre>
+ */
+class Twig_TokenParser_Filter extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $name = $this->parser->getVarName();
+        $ref = new Twig_Node_Expression_BlockReference(new Twig_Node_Expression_Constant($name, $token->getLine()), true, $token->getLine(), $this->getTag());
+
+        $filter = $this->parser->getExpressionParser()->parseFilterExpressionRaw($ref, $this->getTag());
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+
+        $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+
+        $block = new Twig_Node_Block($name, $body, $token->getLine());
+        $this->parser->setBlock($name, $block);
+
+        return new Twig_Node_Print($filter, $token->getLine(), $this->getTag());
+    }
+
+    public function decideBlockEnd(Twig_Token $token)
+    {
+        return $token->test('endfilter');
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'filter';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/For.php b/inc/lib/Twig/TokenParser/For.php
new file mode 100644
index 00000000..5ce82979
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/For.php
@@ -0,0 +1,86 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Loops over each item of a sequence.
+ *
+ * <pre>
+ * <ul>
+ *  {% for user in users %}
+ *    <li>{{ user.username|e }}</li>
+ *  {% endfor %}
+ * </ul>
+ * </pre>
+ */
+class Twig_TokenParser_For extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $lineno = $token->getLine();
+        $targets = $this->parser->getExpressionParser()->parseAssignmentExpression();
+        $this->parser->getStream()->expect(Twig_Token::OPERATOR_TYPE, 'in');
+        $seq = $this->parser->getExpressionParser()->parseExpression();
+
+        $ifexpr = null;
+        if ($this->parser->getStream()->test(Twig_Token::NAME_TYPE, 'if')) {
+            $this->parser->getStream()->next();
+            $ifexpr = $this->parser->getExpressionParser()->parseExpression();
+        }
+
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+        $body = $this->parser->subparse(array($this, 'decideForFork'));
+        if ($this->parser->getStream()->next()->getValue() == 'else') {
+            $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+            $else = $this->parser->subparse(array($this, 'decideForEnd'), true);
+        } else {
+            $else = null;
+        }
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+
+        if (count($targets) > 1) {
+            $keyTarget = $targets->getNode(0);
+            $valueTarget = $targets->getNode(1);
+        } else {
+            $keyTarget = new Twig_Node_Expression_AssignName('_key', $lineno);
+            $valueTarget = $targets->getNode(0);
+        }
+
+        return new Twig_Node_For($keyTarget, $valueTarget, $seq, $ifexpr, $body, $else, $lineno, $this->getTag());
+    }
+
+    public function decideForFork(Twig_Token $token)
+    {
+        return $token->test(array('else', 'endfor'));
+    }
+
+    public function decideForEnd(Twig_Token $token)
+    {
+        return $token->test('endfor');
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'for';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/From.php b/inc/lib/Twig/TokenParser/From.php
new file mode 100644
index 00000000..87aceb4d
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/From.php
@@ -0,0 +1,74 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Imports macros.
+ *
+ * <pre>
+ *   {% from 'forms.html' import forms %}
+ * </pre>
+ */
+class Twig_TokenParser_From extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $macro = $this->parser->getExpressionParser()->parseExpression();
+        $stream = $this->parser->getStream();
+        $stream->expect('import');
+
+        $targets = array();
+        do {
+            $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
+
+            $alias = $name;
+            if ($stream->test('as')) {
+                $stream->next();
+
+                $alias = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
+            }
+
+            $targets[$name] = $alias;
+
+            if (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ',')) {
+                break;
+            }
+
+            $stream->next();
+        } while (true);
+
+        $stream->expect(Twig_Token::BLOCK_END_TYPE);
+
+        $node = new Twig_Node_Import($macro, new Twig_Node_Expression_AssignName($this->parser->getVarName(), $token->getLine()), $token->getLine(), $this->getTag());
+
+        foreach($targets as $name => $alias) {
+            $this->parser->addImportedFunction($alias, $name, $node->getNode('var'));
+        }
+
+        return $node;
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'from';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/If.php b/inc/lib/Twig/TokenParser/If.php
new file mode 100644
index 00000000..65a1a8b2
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/If.php
@@ -0,0 +1,93 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Tests a condition.
+ *
+ * <pre>
+ * {% if users %}
+ *  <ul>
+ *    {% for user in users %}
+ *      <li>{{ user.username|e }}</li>
+ *    {% endfor %}
+ *  </ul>
+ * {% endif %}
+ * </pre>
+ */
+class Twig_TokenParser_If extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $lineno = $token->getLine();
+        $expr = $this->parser->getExpressionParser()->parseExpression();
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+        $body = $this->parser->subparse(array($this, 'decideIfFork'));
+        $tests = array($expr, $body);
+        $else = null;
+
+        $end = false;
+        while (!$end) {
+            switch ($this->parser->getStream()->next()->getValue()) {
+                case 'else':
+                    $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+                    $else = $this->parser->subparse(array($this, 'decideIfEnd'));
+                    break;
+
+                case 'elseif':
+                    $expr = $this->parser->getExpressionParser()->parseExpression();
+                    $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+                    $body = $this->parser->subparse(array($this, 'decideIfFork'));
+                    $tests[] = $expr;
+                    $tests[] = $body;
+                    break;
+
+                case 'endif':
+                    $end = true;
+                    break;
+
+                default:
+                    throw new Twig_Error_Syntax(sprintf('Unexpected end of template. Twig was looking for the following tags "else", "elseif", or "endif" to close the "if" block started at line %d)', $lineno), -1);
+            }
+        }
+
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+
+        return new Twig_Node_If(new Twig_Node($tests), $else, $lineno, $this->getTag());
+    }
+
+    public function decideIfFork(Twig_Token $token)
+    {
+        return $token->test(array('elseif', 'else', 'endif'));
+    }
+
+    public function decideIfEnd(Twig_Token $token)
+    {
+        return $token->test(array('endif'));
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'if';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/Import.php b/inc/lib/Twig/TokenParser/Import.php
new file mode 100644
index 00000000..d0a88cde
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/Import.php
@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Imports macros.
+ *
+ * <pre>
+ *   {% import 'forms.html' as forms %}
+ * </pre>
+ */
+class Twig_TokenParser_Import extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $macro = $this->parser->getExpressionParser()->parseExpression();
+        $this->parser->getStream()->expect('as');
+        $var = new Twig_Node_Expression_AssignName($this->parser->getStream()->expect(Twig_Token::NAME_TYPE)->getValue(), $token->getLine());
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+
+        return new Twig_Node_Import($macro, $var, $token->getLine(), $this->getTag());
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'import';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/Include.php b/inc/lib/Twig/TokenParser/Include.php
new file mode 100644
index 00000000..54154559
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/Include.php
@@ -0,0 +1,71 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Includes a template.
+ *
+ * <pre>
+ *   {% include 'header.html' %}
+ *     Body
+ *   {% include 'footer.html' %}
+ * </pre>
+ */
+class Twig_TokenParser_Include extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $expr = $this->parser->getExpressionParser()->parseExpression();
+
+        $ignoreMissing = false;
+        if ($this->parser->getStream()->test(Twig_Token::NAME_TYPE, 'ignore')) {
+            $this->parser->getStream()->next();
+            $this->parser->getStream()->expect(Twig_Token::NAME_TYPE, 'missing');
+
+            $ignoreMissing = true;
+        }
+
+        $variables = null;
+        if ($this->parser->getStream()->test(Twig_Token::NAME_TYPE, 'with')) {
+            $this->parser->getStream()->next();
+
+            $variables = $this->parser->getExpressionParser()->parseExpression();
+        }
+
+        $only = false;
+        if ($this->parser->getStream()->test(Twig_Token::NAME_TYPE, 'only')) {
+            $this->parser->getStream()->next();
+
+            $only = true;
+        }
+
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+
+        return new Twig_Node_Include($expr, $variables, $only, $ignoreMissing, $token->getLine(), $this->getTag());
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'include';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/Macro.php b/inc/lib/Twig/TokenParser/Macro.php
new file mode 100644
index 00000000..da1ac55c
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/Macro.php
@@ -0,0 +1,69 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Defines a macro.
+ *
+ * <pre>
+ * {% macro input(name, value, type, size) %}
+ *    <input type="{{ type|default('text') }}" name="{{ name }}" value="{{ value|e }}" size="{{ size|default(20) }}" />
+ * {% endmacro %}
+ * </pre>
+ */
+class Twig_TokenParser_Macro extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $lineno = $token->getLine();
+        $name = $this->parser->getStream()->expect(Twig_Token::NAME_TYPE)->getValue();
+
+        $arguments = $this->parser->getExpressionParser()->parseArguments();
+
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+        $this->parser->pushLocalScope();
+        $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
+        if ($this->parser->getStream()->test(Twig_Token::NAME_TYPE)) {
+            $value = $this->parser->getStream()->next()->getValue();
+
+            if ($value != $name) {
+                throw new Twig_Error_Syntax(sprintf("Expected endmacro for macro '$name' (but %s given)", $value), $lineno);
+            }
+        }
+        $this->parser->popLocalScope();
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+
+        $this->parser->setMacro($name, new Twig_Node_Macro($name, $body, $arguments, $lineno, $this->getTag()));
+
+        return null;
+    }
+
+    public function decideBlockEnd(Twig_Token $token)
+    {
+        return $token->test('endmacro');
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'macro';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/Sandbox.php b/inc/lib/Twig/TokenParser/Sandbox.php
new file mode 100644
index 00000000..62e7f8f7
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/Sandbox.php
@@ -0,0 +1,55 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Marks a section of a template as untrusted code that must be evaluated in the sandbox mode.
+ *
+ * <pre>
+ * {% sandbox %}
+ *     {% include 'user.html' %}
+ * {% endsandbox %}
+ * </pre>
+ *
+ * @see http://www.twig-project.org/doc/api.html#sandbox-extension for details
+ */
+class Twig_TokenParser_Sandbox extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+        $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+
+        return new Twig_Node_Sandbox($body, $token->getLine(), $this->getTag());
+    }
+
+    public function decideBlockEnd(Twig_Token $token)
+    {
+        return $token->test('endsandbox');
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'sandbox';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/Set.php b/inc/lib/Twig/TokenParser/Set.php
new file mode 100644
index 00000000..489e1d30
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/Set.php
@@ -0,0 +1,84 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Defines a variable.
+ *
+ * <pre>
+ *  {% set foo = 'foo' %}
+ *
+ *  {% set foo = [1, 2] %}
+ *
+ *  {% set foo = {'foo': 'bar'} %}
+ *
+ *  {% set foo = 'foo' ~ 'bar' %}
+ *
+ *  {% set foo, bar = 'foo', 'bar' %}
+ *
+ *  {% set foo %}Some content{% endset %}
+ * </pre>
+ */
+class Twig_TokenParser_Set extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $lineno = $token->getLine();
+        $stream = $this->parser->getStream();
+        $names = $this->parser->getExpressionParser()->parseAssignmentExpression();
+
+        $capture = false;
+        if ($stream->test(Twig_Token::OPERATOR_TYPE, '=')) {
+            $stream->next();
+            $values = $this->parser->getExpressionParser()->parseMultitargetExpression();
+
+            $stream->expect(Twig_Token::BLOCK_END_TYPE);
+
+            if (count($names) !== count($values)) {
+                throw new Twig_Error_Syntax("When using set, you must have the same number of variables and assignements.", $lineno);
+            }
+        } else {
+            $capture = true;
+
+            if (count($names) > 1) {
+                throw new Twig_Error_Syntax("When using set with a block, you cannot have a multi-target.", $lineno);
+            }
+
+            $stream->expect(Twig_Token::BLOCK_END_TYPE);
+
+            $values = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
+            $stream->expect(Twig_Token::BLOCK_END_TYPE);
+        }
+
+        return new Twig_Node_Set($capture, $names, $values, $lineno, $this->getTag());
+    }
+
+    public function decideBlockEnd(Twig_Token $token)
+    {
+        return $token->test('endset');
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'set';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/Spaceless.php b/inc/lib/Twig/TokenParser/Spaceless.php
new file mode 100644
index 00000000..aa7ffbc4
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/Spaceless.php
@@ -0,0 +1,59 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Remove whitespaces between HTML tags.
+ *
+ * <pre>
+ * {% spaceless %}
+ *      <div>
+ *          <strong>foo</strong>
+ *      </div>
+ * {% endspaceless %}
+ *
+ * {# output will be <div><strong>foo</strong></div> #}
+ * </pre>
+ */
+class Twig_TokenParser_Spaceless extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $lineno = $token->getLine();
+
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+        $body = $this->parser->subparse(array($this, 'decideSpacelessEnd'), true);
+        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
+
+        return new Twig_Node_Spaceless($body, $lineno, $this->getTag());
+    }
+
+    public function decideSpacelessEnd(Twig_Token $token)
+    {
+        return $token->test('endspaceless');
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'spaceless';
+    }
+}
diff --git a/inc/lib/Twig/TokenParser/Use.php b/inc/lib/Twig/TokenParser/Use.php
new file mode 100644
index 00000000..16c47e3e
--- /dev/null
+++ b/inc/lib/Twig/TokenParser/Use.php
@@ -0,0 +1,85 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2011 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Imports blocks defined in another template into the current template.
+ *
+ * <pre>
+ * {% extends "base.html" %}
+ *
+ * {% use "blocks.html" %}
+ *
+ * {% block title %}{% endblock %}
+ * {% block content %}{% endblock %}
+ * </pre>
+ *
+ * @see http://www.twig-project.org/doc/templates.html#horizontal-reuse for details.
+ */
+class Twig_TokenParser_Use extends Twig_TokenParser
+{
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    public function parse(Twig_Token $token)
+    {
+        $template = $this->parser->getExpressionParser()->parseExpression();
+
+        if (!$template instanceof Twig_Node_Expression_Constant) {
+            throw new Twig_Error_Syntax('The template references in a "use" statement must be a string.', $token->getLine());
+        }
+
+        $stream = $this->parser->getStream();
+
+        $targets = array();
+        if ($stream->test('with')) {
+            $stream->next();
+
+            do {
+                $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
+
+                $alias = $name;
+                if ($stream->test('as')) {
+                    $stream->next();
+
+                    $alias = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
+                }
+
+                $targets[$name] = new Twig_Node_Expression_Constant($alias, -1);
+
+                if (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ',')) {
+                    break;
+                }
+
+                $stream->next();
+            } while (true);
+        }
+
+        $stream->expect(Twig_Token::BLOCK_END_TYPE);
+
+        $this->parser->addTrait(new Twig_Node(array('template' => $template, 'targets' => new Twig_Node($targets))));
+
+        return null;
+    }
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    public function getTag()
+    {
+        return 'use';
+    }
+}
diff --git a/inc/lib/Twig/TokenParserBroker.php b/inc/lib/Twig/TokenParserBroker.php
new file mode 100644
index 00000000..34fcdfbf
--- /dev/null
+++ b/inc/lib/Twig/TokenParserBroker.php
@@ -0,0 +1,107 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ * (c) 2010 Arnaud Le Blanc
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Default implementation of a token parser broker.
+ *
+ * @package twig
+ * @author  Arnaud Le Blanc <arnaud.lb@gmail.com>
+ */
+class Twig_TokenParserBroker implements Twig_TokenParserBrokerInterface
+{
+    protected $parser;
+    protected $parsers = array();
+    protected $brokers = array();
+
+    /**
+     * Constructor.
+     *
+     * @param array|Traversable $parsers A Traversable of Twig_TokenParserInterface instances
+     * @param array|Traversable $brokers A Traversable of Twig_TokenParserBrokerInterface instances
+     */
+    public function __construct($parsers = array(), $brokers = array())
+    {
+        foreach ($parsers as $parser) {
+            if (!$parser instanceof Twig_TokenParserInterface) {
+                throw new Twig_Error('$parsers must a an array of Twig_TokenParserInterface');
+            }
+            $this->parsers[$parser->getTag()] = $parser;
+        }
+        foreach ($brokers as $broker) {
+            if (!$broker instanceof Twig_TokenParserBrokerInterface) {
+                throw new Twig_Error('$brokers must a an array of Twig_TokenParserBrokerInterface');
+            }
+            $this->brokers[] = $broker;
+        }
+    }
+
+    /**
+     * Adds a TokenParser.
+     *
+     * @param Twig_TokenParserInterface $parser A Twig_TokenParserInterface instance
+     */
+    public function addTokenParser(Twig_TokenParserInterface $parser)
+    {
+        $this->parsers[$parser->getTag()] = $parser;
+    }
+
+    /**
+     * Adds a TokenParserBroker.
+     *
+     * @param Twig_TokenParserBroker $broker A Twig_TokenParserBroker instance
+     */
+    public function addTokenParserBroker(Twig_TokenParserBroker $broker)
+    {
+        $this->brokers[] = $broker;
+    }
+
+    /**
+     * Gets a suitable TokenParser for a tag.
+     *
+     * First looks in parsers, then in brokers.
+     *
+     * @param string $tag A tag name
+     *
+     * @return null|Twig_TokenParserInterface A Twig_TokenParserInterface or null if no suitable TokenParser was found
+     */
+    public function getTokenParser($tag)
+    {
+        if (isset($this->parsers[$tag])) {
+            return $this->parsers[$tag];
+        }
+        $broker = end($this->brokers);
+        while (false !== $broker) {
+            $parser = $broker->getTokenParser($tag);
+            if (null !== $parser) {
+                return $parser;
+            }
+            $broker = prev($this->brokers);
+        }
+        return null;
+    }
+
+    public function getParser()
+    {
+        return $this->parser;
+    }
+
+    public function setParser(Twig_ParserInterface $parser)
+    {
+        $this->parser = $parser;
+        foreach ($this->parsers as $tokenParser) {
+            $tokenParser->setParser($parser);
+        }
+        foreach ($this->brokers as $broker) {
+            $broker->setParser($parser);
+        }
+    }
+}
diff --git a/inc/lib/Twig/TokenParserBrokerInterface.php b/inc/lib/Twig/TokenParserBrokerInterface.php
new file mode 100644
index 00000000..3ce8ca26
--- /dev/null
+++ b/inc/lib/Twig/TokenParserBrokerInterface.php
@@ -0,0 +1,45 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ * (c) 2010 Arnaud Le Blanc
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Interface implemented by token parser brokers.
+ *
+ * Token parser brokers allows to implement custom logic in the process of resolving a token parser for a given tag name.
+ *
+ * @package twig
+ * @author  Arnaud Le Blanc <arnaud.lb@gmail.com>
+ */
+interface Twig_TokenParserBrokerInterface
+{
+    /**
+     * Gets a TokenParser suitable for a tag.
+     *
+     * @param  string $tag A tag name
+     *
+     * @return null|Twig_TokenParserInterface A Twig_TokenParserInterface or null if no suitable TokenParser was found
+     */
+    function getTokenParser($tag);
+
+    /**
+     * Calls Twig_TokenParserInterface::setParser on all parsers the implementation knows of.
+     *
+     * @param Twig_ParserInterface $parser A Twig_ParserInterface interface
+     */
+    function setParser(Twig_ParserInterface $parser);
+
+    /**
+     * Gets the Twig_ParserInterface.
+     *
+     * @return null|Twig_ParserInterface A Twig_ParserInterface instance of null
+     */
+    function getParser();
+}
diff --git a/inc/lib/Twig/TokenParserInterface.php b/inc/lib/Twig/TokenParserInterface.php
new file mode 100644
index 00000000..114a939e
--- /dev/null
+++ b/inc/lib/Twig/TokenParserInterface.php
@@ -0,0 +1,42 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2010 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Interface implemented by token parsers.
+ *
+ * @package twig
+ * @author  Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_TokenParserInterface
+{
+    /**
+     * Sets the parser associated with this token parser
+     *
+     * @param $parser A Twig_Parser instance
+     */
+    function setParser(Twig_Parser $parser);
+
+    /**
+     * Parses a token and returns a node.
+     *
+     * @param Twig_Token $token A Twig_Token instance
+     *
+     * @return Twig_NodeInterface A Twig_NodeInterface instance
+     */
+    function parse(Twig_Token $token);
+
+    /**
+     * Gets the tag name associated with this token parser.
+     *
+     * @param string The tag name
+     */
+    function getTag();
+}
diff --git a/inc/lib/Twig/TokenStream.php b/inc/lib/Twig/TokenStream.php
new file mode 100644
index 00000000..a2002b42
--- /dev/null
+++ b/inc/lib/Twig/TokenStream.php
@@ -0,0 +1,140 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ * (c) 2009 Armin Ronacher
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Represents a token stream.
+ *
+ * @package twig
+ * @author  Fabien Potencier <fabien@symfony.com>
+ */
+class Twig_TokenStream
+{
+    protected $tokens;
+    protected $current;
+    protected $filename;
+
+    /**
+     * Constructor.
+     *
+     * @param array  $tokens   An array of tokens
+     * @param string $filename The name of the filename which tokens are associated with
+     */
+    public function __construct(array $tokens, $filename = null)
+    {
+        $this->tokens     = $tokens;
+        $this->current    = 0;
+        $this->filename   = $filename;
+    }
+
+    /**
+     * Returns a string representation of the token stream.
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return implode("\n", $this->tokens);
+    }
+
+    /**
+     * Sets the pointer to the next token and returns the old one.
+     *
+     * @return Twig_Token
+     */
+    public function next()
+    {
+        if (!isset($this->tokens[++$this->current])) {
+            throw new Twig_Error_Syntax('Unexpected end of template', -1, $this->filename);
+        }
+
+        return $this->tokens[$this->current - 1];
+    }
+
+    /**
+     * Tests a token and returns it or throws a syntax error.
+     *
+     * @return Twig_Token
+     */
+    public function expect($type, $value = null, $message = null)
+    {
+        $token = $this->tokens[$this->current];
+        if (!$token->test($type, $value)) {
+            $line = $token->getLine();
+            throw new Twig_Error_Syntax(sprintf('%sUnexpected token "%s" of value "%s" ("%s" expected%s)',
+                $message ? $message.'. ' : '',
+                Twig_Token::typeToEnglish($token->getType(), $line), $token->getValue(),
+                Twig_Token::typeToEnglish($type, $line), $value ? sprintf(' with value "%s"', $value) : ''),
+                $line,
+                $this->filename
+            );
+        }
+        $this->next();
+
+        return $token;
+    }
+
+    /**
+     * Looks at the next token.
+     *
+     * @param integer $number
+     *
+     * @return Twig_Token
+     */
+    public function look($number = 1)
+    {
+        if (!isset($this->tokens[$this->current + $number])) {
+            throw new Twig_Error_Syntax('Unexpected end of template', -1, $this->filename);
+        }
+
+        return $this->tokens[$this->current + $number];
+    }
+
+    /**
+     * Tests the current token
+     *
+     * @return bool
+     */
+    public function test($primary, $secondary = null)
+    {
+        return $this->tokens[$this->current]->test($primary, $secondary);
+    }
+
+    /**
+     * Checks if end of stream was reached
+     *
+     * @return bool
+     */
+    public function isEOF()
+    {
+        return $this->tokens[$this->current]->getType() === Twig_Token::EOF_TYPE;
+    }
+
+    /**
+     * Gets the current token
+     *
+     * @return Twig_Token
+     */
+    public function getCurrent()
+    {
+        return $this->tokens[$this->current];
+    }
+
+    /**
+     * Gets the filename associated with this stream
+     *
+     * @return string
+     */
+    public function getFilename()
+    {
+        return $this->filename;
+    }
+}
diff --git a/inc/lib/gettext/AUTHORS b/inc/lib/gettext/AUTHORS
new file mode 100644
index 00000000..da6ade7b
--- /dev/null
+++ b/inc/lib/gettext/AUTHORS
@@ -0,0 +1,3 @@
+Danilo Segan <danilo@kvota.net>
+Nico Kaiser <nico@siriux.net> (contributed most changes between 1.0.2 and 1.0.3, bugfix for 1.0.5)
+Steven Armstrong <sa@c-area.ch> (gettext.inc, leading to 1.0.6)
diff --git a/inc/lib/gettext/COPYING b/inc/lib/gettext/COPYING
new file mode 100644
index 00000000..5b6e7c66
--- /dev/null
+++ b/inc/lib/gettext/COPYING
@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	    How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/inc/lib/gettext/Makefile b/inc/lib/gettext/Makefile
new file mode 100644
index 00000000..f389de51
--- /dev/null
+++ b/inc/lib/gettext/Makefile
@@ -0,0 +1,38 @@
+PACKAGE = php-gettext-$(VERSION)
+VERSION = 1.0.11
+
+DIST_FILES = \
+	gettext.php \
+	gettext.inc \
+	streams.php \
+	AUTHORS     \
+	README      \
+	COPYING     \
+	Makefile    \
+	examples/index.php    \
+	examples/pigs_dropin.php    \
+	examples/pigs_fallback.php    \
+	examples/locale/sr_CS/LC_MESSAGES/messages.po \
+	examples/locale/sr_CS/LC_MESSAGES/messages.mo \
+	examples/locale/de_CH/LC_MESSAGES/messages.po \
+	examples/locale/de_CH/LC_MESSAGES/messages.mo \
+	examples/update \
+	tests/LocalesTest.php \
+	tests/ParsingTest.php
+
+check:
+	phpunit --verbose tests
+
+dist: check
+	if [ -d $(PACKAGE) ]; then \
+	    rm -rf $(PACKAGE); \
+	fi; \
+	mkdir $(PACKAGE); \
+	if [ -d $(PACKAGE) ]; then \
+	    cp -rp --parents $(DIST_FILES) $(PACKAGE); \
+	    tar cvzf $(PACKAGE).tar.gz $(PACKAGE); \
+	    rm -rf $(PACKAGE); \
+	fi;
+
+clean:
+	rm -f $(PACKAGE).tar.gz
diff --git a/inc/lib/gettext/README b/inc/lib/gettext/README
new file mode 100644
index 00000000..bca4f916
--- /dev/null
+++ b/inc/lib/gettext/README
@@ -0,0 +1,161 @@
+PHP-gettext 1.0 (https://launchpad.net/php-gettext)
+
+Copyright 2003, 2006, 2009 -- Danilo "angry with PHP[1]" Segan
+Licensed under GPLv2 (or any later version, see COPYING)
+
+[1] PHP is actually cyrillic, and translates roughly to
+    "works-doesn't-work" (UTF-8: Ради-Не-Ради)
+
+
+Introduction
+
+    How many times did you look for a good translation tool, and
+    found out that gettext is best for the job? Many times.
+
+    How many times did you try to use gettext in PHP, but failed
+    miserably, because either your hosting provider didn't support
+    it, or the server didn't have adequate locale? Many times.
+
+    Well, this is a solution to your needs. It allows using gettext
+    tools for managing translations, yet it doesn't require gettext
+    library at all. It parses generated MO files directly, and thus
+    might be a bit slower than the (maybe provided) gettext library.
+
+    PHP-gettext is a simple reader for GNU gettext MO files. Those
+    are binary containers for translations, produced by GNU msgfmt.
+
+Why?
+
+    I got used to having gettext work even without gettext
+    library. It's there in my favourite language Python, so I was
+    surprised that I couldn't find it in PHP. I even Googled for it,
+    but to no avail.
+
+    So, I said, what the heck, I'm going to write it for this
+    disguisting language of PHP, because I'm often constrained to it.
+
+Features
+
+  o Support for simple translations
+    Just define a simple alias for translate() function (suggested
+    use of _() or gettext(); see provided example).
+
+  o Support for ngettext calls (plural forms, see a note under bugs)
+    You may also use plural forms. Translations in MO files need to
+    provide this, and they must also provide "plural-forms" header.
+    Please see 'info gettext' for more details.
+
+  o Support for reading straight files, or strings (!!!)
+    Since I can imagine many different backends for reading in the MO
+    file data, I used imaginary abstract class StreamReader to do all
+    the input (check streams.php). For your convenience, I've already
+    provided two classes for reading files: FileReader and
+    StringReader (CachedFileReader is a combination of the two: it
+    loads entire file contents into a string, and then works on that).
+    See example below for usage. You can for instance use StringReader
+    when you read in data from a database, or you can create your own
+    derivative of StreamReader for anything you like.
+
+
+Bugs
+
+    Report them on https://bugs.launchpad.net/php-gettext
+
+Usage
+
+    Put files streams.php and gettext.php somewhere you can load them
+    from, and require 'em in where you want to use them.
+
+    Then, create one 'stream reader' (a class that provides functions
+    like read(), seekto(), currentpos() and length()) which will
+    provide data for the 'gettext_reader', with eg.
+      $streamer = new FileStream('data.mo');
+
+    Then, use that as a parameter to gettext_reader constructor:
+      $wohoo = new gettext_reader($streamer);
+
+    If you want to disable pre-loading of entire message catalog in
+    memory (if, for example, you have a multi-thousand message catalog
+    which you'll use only occasionally), use "false" for second
+    parameter to gettext_reader constructor:
+      $wohoo = new gettext_reader($streamer, false);
+
+    From now on, you have all the benefits of gettext data at your
+    disposal, so may run:
+      print $wohoo->translate("This is a test");
+      print $wohoo->ngettext("%d bird", "%d birds", $birds);
+
+    You might need to pass parameter "-k" to xgettext to make it
+    extract all the strings. In above example, try with
+      xgettext -ktranslate -kngettext:1,2 file.php
+    what should create messages.po which contains two messages for
+    translation.
+
+    I suggest creating simple aliases for these functions (see
+    example/pigs.php for how do I do it, which means it's probably a
+    bad way).
+
+
+Usage with gettext.inc (standard gettext interfaces emulation)
+
+    Check example in examples/pig_dropin.php, basically you include
+    gettext.inc and use all the standard gettext interfaces as
+    documented on:
+
+       http://www.php.net/gettext
+
+    The only catch is that you can check return value of setlocale()
+    to see if your locale is system supported or not.
+
+
+Example
+
+    See in examples/ subdirectory. There are a couple of files.
+    pigs.php is an example, serbian.po is a translation to Serbian
+    language, and serbian.mo is generated with
+       msgfmt -o serbian.mo serbian.po
+    There is also simple "update" script that can be used to generate
+    POT file and to update the translation using msgmerge.
+
+TODO:
+
+  o Improve speed to be even more comparable to the native gettext
+    implementation.
+
+  o Try to use hash tables in MO files: with pre-loading, would it
+    be useful at all?
+
+Never-asked-questions:
+
+  o Why did you mark this as version 1.0 when this is the first code
+    release?
+
+    Well, it's quite simple. I consider that the first released thing
+    should be labeled "version 1" (first, right?). Zero is there to
+    indicate that there's zero improvement and/or change compared to
+    "version 1".
+
+    I plan to use version numbers 1.0.* for small bugfixes, and to
+    release 1.1 as "first stable release of version 1".
+
+    This may trick someone that this is actually useful software, but
+    as with any other free software, I take NO RESPONSIBILITY for
+    creating such a masterpiece that will smoke crack, trash your
+    hard disk, and make lasers in your CD device dance to the tune of
+    Mozart's 40th Symphony (there is one like that, right?).
+
+  o Can I...?
+
+    Yes, you can. This is free software (as in freedom, free speech),
+    and you might do whatever you wish with it, provided you do not
+    limit freedom of others (GPL).
+
+    I'm considering licensing this under LGPL, but I *do* want
+    *every* PHP-gettext user to contribute and respect ideas of free
+    software, so don't count on it happening anytime soon.
+
+    I'm sorry that I'm taking away your freedom of taking others'
+    freedom away, but I believe that's neglible as compared to what
+    freedoms you could take away. ;-)
+
+    Uhm, whatever.
diff --git a/inc/lib/gettext/examples/index.php b/inc/lib/gettext/examples/index.php
new file mode 100644
index 00000000..263cd3d3
--- /dev/null
+++ b/inc/lib/gettext/examples/index.php
@@ -0,0 +1,27 @@
+<html>
+<head>
+<title>PHP-gettext examples</title>
+</head>
+<body>
+<h1>PHP-gettext</h1>
+
+<h2>Introduction</h2>
+<p>PHP-gettext provides a simple gettext replacement that works independently from the system's gettext abilities.
+It can read MO files and use them for translating strings.</p>
+<p>This version has the ability to cache all strings and translations to speed up the string lookup. 
+While the cache is enabled by default, it can be switched off with the second parameter in the constructor (e.g. when using very large MO files 
+that you don't want to keep in memory)</p>
+
+
+<h2>Examples</h2>
+<ul>
+	<li><a href="pigs_dropin.php">PHP-gettext as a dropin replacement</a></li>
+	<li><a href="pigs_fallback.php">PHP-gettext as a fallback solution</a></li>
+</ul>
+
+<hr />
+<p>Copyright (c) 2003-2006 Danilo Segan</p>
+<p>Copyright (c) 2005-2006 Steven Armstrong</p>
+
+</body>
+</html>
diff --git a/inc/lib/gettext/examples/locale/de_CH/LC_MESSAGES/messages.mo b/inc/lib/gettext/examples/locale/de_CH/LC_MESSAGES/messages.mo
new file mode 100644
index 00000000..91930376
--- /dev/null
+++ b/inc/lib/gettext/examples/locale/de_CH/LC_MESSAGES/messages.mo
diff --git a/inc/lib/gettext/examples/locale/de_CH/LC_MESSAGES/messages.po b/inc/lib/gettext/examples/locale/de_CH/LC_MESSAGES/messages.po
new file mode 100644
index 00000000..6e4886b5
--- /dev/null
+++ b/inc/lib/gettext/examples/locale/de_CH/LC_MESSAGES/messages.po
@@ -0,0 +1,30 @@
+# Sample translation for PHP-gettext 1.0
+# Copyright (c) 2003 Danilo Segan <danilo@kvota.net>
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: pigs\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2003-10-23 04:50+0200\n"
+"PO-Revision-Date: 2003-11-01 23:40+0100\n"
+"Last-Translator: Danilo Segan <danilo@kvota.net>\n"
+"Language-Team: Serbian (sr) <danilo@kvota.net>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+#"Plural-Forms: nplurals=2; plural=n != 1;\n"
+
+#: pigs.php:19
+msgid ""
+"This is how the story goes.\n"
+"\n"
+msgstr ""
+"Und so geht die Geschichte.\n"
+"\n"
+
+#: pigs.php:21
+#, php-format
+msgid "%d pig went to the market\n"
+msgid_plural "%d pigs went to the market\n"
+msgstr[0] "%d Schwein ging zum Markt\n"
+msgstr[1] "%d Schweine gingen zum Markt\n"
diff --git a/inc/lib/gettext/examples/locale/sr_CS/LC_MESSAGES/messages.mo b/inc/lib/gettext/examples/locale/sr_CS/LC_MESSAGES/messages.mo
new file mode 100644
index 00000000..497c8830
--- /dev/null
+++ b/inc/lib/gettext/examples/locale/sr_CS/LC_MESSAGES/messages.mo
diff --git a/inc/lib/gettext/examples/locale/sr_CS/LC_MESSAGES/messages.po b/inc/lib/gettext/examples/locale/sr_CS/LC_MESSAGES/messages.po
new file mode 100644
index 00000000..e5da0e94
--- /dev/null
+++ b/inc/lib/gettext/examples/locale/sr_CS/LC_MESSAGES/messages.po
@@ -0,0 +1,30 @@
+# Sample translation for PHP-gettext 1.0
+# Copyright (c) 2003,2006 Danilo Segan <danilo@kvota.net>
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: pigs\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2003-10-23 04:50+0200\n"
+"PO-Revision-Date: 2006-02-02 21:06+0100\n"
+"Last-Translator: Danilo Segan <danilo@kvota.net>\n"
+"Language-Team: Serbian (sr) <danilo@kvota.net>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=3; plural=n%10==1 && n%100!=11 ? 0 : n%10>=2 && "
+"n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2;\n"
+
+#: pigs.php:19
+msgid ""
+"This is how the story goes.\n"
+"\n"
+msgstr "Овако иде прича.\n\n"
+
+#: pigs.php:21
+#, php-format
+msgid "%d pig went to the market\n"
+msgid_plural "%d pigs went to the market\n"
+msgstr[0] "%d мало прасе је отишло на пијац\n"
+msgstr[1] "%d мала прасета су отишла на пијац\n"
+msgstr[2] "%d малих прасића је отишло на пијац\n"
diff --git a/inc/lib/gettext/examples/pigs_dropin.php b/inc/lib/gettext/examples/pigs_dropin.php
new file mode 100644
index 00000000..94fd8507
--- /dev/null
+++ b/inc/lib/gettext/examples/pigs_dropin.php
@@ -0,0 +1,89 @@
+<?php
+/*
+   Copyright (c) 2003,2004,2005,2009 Danilo Segan <danilo@kvota.net>.
+   Copyright (c) 2005,2006 Steven Armstrong <sa@c-area.ch>
+
+   This file is part of PHP-gettext.
+
+   PHP-gettext is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   PHP-gettext is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with PHP-gettext; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*/
+
+error_reporting(E_ALL | E_STRICT);
+
+// define constants
+define('PROJECT_DIR', realpath('./'));
+define('LOCALE_DIR', PROJECT_DIR .'/locale');
+define('DEFAULT_LOCALE', 'en_US');
+
+require_once('../gettext.inc');
+
+$supported_locales = array('en_US', 'sr_CS', 'de_CH');
+$encoding = 'UTF-8';
+
+$locale = (isset($_GET['lang']))? $_GET['lang'] : DEFAULT_LOCALE;
+
+// gettext setup
+T_setlocale(LC_MESSAGES, $locale);
+// Set the text domain as 'messages'
+$domain = 'messages';
+bindtextdomain($domain, LOCALE_DIR);
+// bind_textdomain_codeset is supported only in PHP 4.2.0+
+if (function_exists('bind_textdomain_codeset')) 
+  bind_textdomain_codeset($domain, $encoding);
+textdomain($domain);
+
+header("Content-type: text/html; charset=$encoding");
+?>
+<html>
+<head>
+<title>PHP-gettext dropin example</title>
+</head>
+<body>
+<h1>PHP-gettext as a dropin replacement</h1>
+<p>Example showing how to use PHP-gettext as a dropin replacement for the native gettext library.</p>
+<?php
+print "<p>";
+foreach($supported_locales as $l) {
+	print "[<a href=\"?lang=$l\">$l</a>] ";
+}
+print "</p>\n";
+
+if (!locale_emulation()) {
+	print "<p>locale '$locale' is supported by your system, using native gettext implementation.</p>\n";
+}
+else {
+	print "<p>locale '$locale' is _not_ supported on your system, using the default locale '". DEFAULT_LOCALE ."'.</p>\n";
+}
+?>
+
+<hr />
+
+<?php
+// using PHP-gettext
+print "<pre>";
+print _("This is how the story goes.\n\n");
+for ($number=6; $number>=0; $number--) {
+  print sprintf(T_ngettext("%d pig went to the market\n", 
+			  "%d pigs went to the market\n", $number), 
+		 $number );
+}
+print "</pre>\n";
+?>
+
+<hr />
+<p>&laquo; <a href="./">back</a></p>
+</body>
+</html>
diff --git a/inc/lib/gettext/examples/pigs_fallback.php b/inc/lib/gettext/examples/pigs_fallback.php
new file mode 100644
index 00000000..353190da
--- /dev/null
+++ b/inc/lib/gettext/examples/pigs_fallback.php
@@ -0,0 +1,88 @@
+<?php
+/*
+   Copyright (c) 2003,2004,2005,2009 Danilo Segan <danilo@kvota.net>.
+   Copyright (c) 2005,2006 Steven Armstrong <sa@c-area.ch>
+
+   This file is part of PHP-gettext.
+
+   PHP-gettext is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   PHP-gettext is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with PHP-gettext; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*/
+
+error_reporting(E_ALL | E_STRICT);
+
+// define constants
+define('PROJECT_DIR', realpath('./'));
+define('LOCALE_DIR', PROJECT_DIR .'/locale');
+define('DEFAULT_LOCALE', 'en_US');
+
+require_once('../gettext.inc');
+
+$supported_locales = array('en_US', 'sr_CS', 'de_CH');
+$encoding = 'UTF-8';
+
+$locale = (isset($_GET['lang']))? $_GET['lang'] : DEFAULT_LOCALE;
+
+// gettext setup
+T_setlocale(LC_MESSAGES, $locale);
+// Set the text domain as 'messages'
+$domain = 'messages';
+T_bindtextdomain($domain, LOCALE_DIR);
+T_bind_textdomain_codeset($domain, $encoding);
+T_textdomain($domain);
+
+header("Content-type: text/html; charset=$encoding");
+?>
+<html>
+<head>
+<title>PHP-gettext fallback example</title>
+</head>
+<body>
+<h1>PHP-gettext as a fallback solution</h1>
+<p>Example showing how to use PHP-gettext as a fallback solution if the native gettext library is not available or the system does not support the requested locale.</p>
+
+<?php
+print "<p>";
+foreach($supported_locales as $l) {
+	print "[<a href=\"?lang=$l\">$l</a>] ";
+}
+print "</p>\n";
+
+if (!locale_emulation()) {
+	print "<p>locale '$locale' is supported by your system, using native gettext implementation.</p>\n";
+}
+else {
+	print "<p>locale '$locale' is <strong>not</strong> supported on your system, using custom gettext implementation.</p>\n";
+}
+?>
+
+<hr />
+
+<?php
+// using PHP-gettext
+print "<pre>";
+print T_("This is how the story goes.\n\n");
+for ($number=6; $number>=0; $number--) {
+  print sprintf( T_ngettext("%d pig went to the market\n", 
+			  "%d pigs went to the market\n", $number), 
+		 $number );
+}
+print "</pre>\n";
+?>
+
+<hr />
+<p>&laquo; <a href="./">back</a></p>
+</body>
+</html>
diff --git a/inc/lib/gettext/examples/update b/inc/lib/gettext/examples/update
new file mode 100755
index 00000000..76b4308a
--- /dev/null
+++ b/inc/lib/gettext/examples/update
@@ -0,0 +1,14 @@
+#!/bin/sh
+TEMPLATE=pigs.pot
+xgettext -kT_ngettext:1,2 -kT_ -L PHP -o $TEMPLATE pigs_dropin.php
+if [ "x$1" = "x-p" ]; then
+    msgfmt --statistics $TEMPLATE
+else
+    if [ -f $1.po ]; then
+	msgmerge -o .tmp$1.po $1.po $TEMPLATE
+	mv .tmp$1.po $1.po
+	msgfmt --statistics $1.po
+    else
+	echo "Usage: $0 [-p|<basename>]"
+    fi
+fi
diff --git a/inc/lib/gettext/gettext.inc b/inc/lib/gettext/gettext.inc
new file mode 100644
index 00000000..cb21fea5
--- /dev/null
+++ b/inc/lib/gettext/gettext.inc
@@ -0,0 +1,536 @@
+<?php
+/*
+   Copyright (c) 2005 Steven Armstrong <sa at c-area dot ch>
+   Copyright (c) 2009 Danilo Segan <danilo@kvota.net>
+
+   Drop in replacement for native gettext.
+
+   This file is part of PHP-gettext.
+
+   PHP-gettext is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   PHP-gettext is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with PHP-gettext; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*/
+/*
+LC_CTYPE        0
+LC_NUMERIC      1
+LC_TIME         2
+LC_COLLATE      3
+LC_MONETARY     4
+LC_MESSAGES     5
+LC_ALL          6
+*/
+
+// LC_MESSAGES is not available if php-gettext is not loaded
+// while the other constants are already available from session extension.
+if (!defined('LC_MESSAGES')) {
+  define('LC_MESSAGES',	5);
+}
+
+require(dirname(__FILE__) . '/streams.php');
+require(dirname(__FILE__) . '/gettext.php');
+
+
+// Variables
+
+global $text_domains, $default_domain, $LC_CATEGORIES, $EMULATEGETTEXT, $CURRENTLOCALE;
+$text_domains = array();
+$default_domain = 'messages';
+$LC_CATEGORIES = array('LC_CTYPE', 'LC_NUMERIC', 'LC_TIME', 'LC_COLLATE', 'LC_MONETARY', 'LC_MESSAGES', 'LC_ALL');
+$EMULATEGETTEXT = 0;
+$CURRENTLOCALE = '';
+
+/* Class to hold a single domain included in $text_domains. */
+class domain {
+  var $l10n;
+  var $path;
+  var $codeset;
+}
+
+// Utility functions
+
+/**
+ * Return a list of locales to try for any POSIX-style locale specification.
+ */
+function get_list_of_locales($locale) {
+  /* Figure out all possible locale names and start with the most
+   * specific ones.  I.e. for sr_CS.UTF-8@latin, look through all of
+   * sr_CS.UTF-8@latin, sr_CS@latin, sr@latin, sr_CS.UTF-8, sr_CS, sr.
+   */
+  $locale_names = array();
+  $lang = NULL;
+  $country = NULL;
+  $charset = NULL;
+  $modifier = NULL;
+  if ($locale) {
+    if (preg_match("/^(?P<lang>[a-z]{2,3})"              // language code
+                   ."(?:_(?P<country>[A-Z]{2}))?"           // country code
+                   ."(?:\.(?P<charset>[-A-Za-z0-9_]+))?"    // charset
+                   ."(?:@(?P<modifier>[-A-Za-z0-9_]+))?$/",  // @ modifier
+                   $locale, $matches)) {
+
+      if (isset($matches["lang"])) $lang = $matches["lang"];
+      if (isset($matches["country"])) $country = $matches["country"];
+      if (isset($matches["charset"])) $charset = $matches["charset"];
+      if (isset($matches["modifier"])) $modifier = $matches["modifier"];
+
+      if ($modifier) {
+        if ($country) {
+          if ($charset)
+            array_push($locale_names, "${lang}_$country.$charset@$modifier");
+          array_push($locale_names, "${lang}_$country@$modifier");
+        } elseif ($charset)
+            array_push($locale_names, "${lang}.$charset@$modifier");
+        array_push($locale_names, "$lang@$modifier");
+      }
+      if ($country) {
+        if ($charset)
+          array_push($locale_names, "${lang}_$country.$charset");
+        array_push($locale_names, "${lang}_$country");
+      } elseif ($charset)
+          array_push($locale_names, "${lang}.$charset");
+      array_push($locale_names, $lang);
+    }
+
+    // If the locale name doesn't match POSIX style, just include it as-is.
+    if (!in_array($locale, $locale_names))
+      array_push($locale_names, $locale);
+  }
+  return $locale_names;
+}
+
+/**
+ * Utility function to get a StreamReader for the given text domain.
+ */
+function _get_reader($domain=null, $category=5, $enable_cache=true) {
+    global $text_domains, $default_domain, $LC_CATEGORIES;
+    if (!isset($domain)) $domain = $default_domain;
+    if (!isset($text_domains[$domain]->l10n)) {
+        // get the current locale
+        $locale = _setlocale(LC_MESSAGES, 0);
+        $bound_path = isset($text_domains[$domain]->path) ?
+          $text_domains[$domain]->path : './';
+        $subpath = $LC_CATEGORIES[$category] ."/$domain.mo";
+
+        $locale_names = get_list_of_locales($locale);
+        $input = null;
+        foreach ($locale_names as $locale) {
+          $full_path = $bound_path . $locale . "/" . $subpath;
+          if (file_exists($full_path)) {
+            $input = new FileReader($full_path);
+            break;
+          }
+        }
+
+        if (!array_key_exists($domain, $text_domains)) {
+          // Initialize an empty domain object.
+          $text_domains[$domain] = new domain();
+        }
+        $text_domains[$domain]->l10n = new gettext_reader($input,
+                                                          $enable_cache);
+    }
+    return $text_domains[$domain]->l10n;
+}
+
+/**
+ * Returns whether we are using our emulated gettext API or PHP built-in one.
+ */
+function locale_emulation() {
+    global $EMULATEGETTEXT;
+    return $EMULATEGETTEXT;
+}
+
+/**
+ * Checks if the current locale is supported on this system.
+ */
+function _check_locale_and_function($function=false) {
+    global $EMULATEGETTEXT;
+    if ($function and !function_exists($function))
+        return false;
+    return !$EMULATEGETTEXT;
+}
+
+/**
+ * Get the codeset for the given domain.
+ */
+function _get_codeset($domain=null) {
+    global $text_domains, $default_domain, $LC_CATEGORIES;
+    if (!isset($domain)) $domain = $default_domain;
+    return (isset($text_domains[$domain]->codeset))? $text_domains[$domain]->codeset : ini_get('mbstring.internal_encoding');
+}
+
+/**
+ * Convert the given string to the encoding set by bind_textdomain_codeset.
+ */
+function _encode($text) {
+    $source_encoding = mb_detect_encoding($text);
+    $target_encoding = _get_codeset();
+    if ($source_encoding != $target_encoding) {
+        return mb_convert_encoding($text, $target_encoding, $source_encoding);
+    }
+    else {
+        return $text;
+    }
+}
+
+
+// Custom implementation of the standard gettext related functions
+
+/**
+ * Returns passed in $locale, or environment variable $LANG if $locale == ''.
+ */
+function _get_default_locale($locale) {
+  if ($locale == '') // emulate variable support
+    return getenv('LANG');
+  else
+    return $locale;
+}
+
+/**
+ * Sets a requested locale, if needed emulates it.
+ */
+function _setlocale($category, $locale) {
+    global $CURRENTLOCALE, $EMULATEGETTEXT;
+    if ($locale === 0) { // use === to differentiate between string "0"
+        if ($CURRENTLOCALE != '')
+            return $CURRENTLOCALE;
+        else
+            // obey LANG variable, maybe extend to support all of LC_* vars
+            // even if we tried to read locale without setting it first
+            return _setlocale($category, $CURRENTLOCALE);
+    } else {
+        if (function_exists('setlocale')) {
+          $ret = setlocale($category, $locale);
+          if (($locale == '' and !$ret) or // failed setting it by env
+              ($locale != '' and $ret != $locale)) { // failed setting it
+            // Failed setting it according to environment.
+            $CURRENTLOCALE = _get_default_locale($locale);
+            $EMULATEGETTEXT = 1;
+          } else {
+            $CURRENTLOCALE = $ret;
+            $EMULATEGETTEXT = 0;
+          }
+        } else {
+          // No function setlocale(), emulate it all.
+          $CURRENTLOCALE = _get_default_locale($locale);
+          $EMULATEGETTEXT = 1;
+        }
+        // Allow locale to be changed on the go for one translation domain.
+        global $text_domains, $default_domain;
+        if (array_key_exists($default_domain, $text_domains)) {
+            unset($text_domains[$default_domain]->l10n);
+        }
+        return $CURRENTLOCALE;
+    }
+}
+
+/**
+ * Sets the path for a domain.
+ */
+function _bindtextdomain($domain, $path) {
+    global $text_domains;
+    // ensure $path ends with a slash ('/' should work for both, but lets still play nice)
+    if (substr(php_uname(), 0, 7) == "Windows") {
+      if ($path[strlen($path)-1] != '\\' and $path[strlen($path)-1] != '/')
+        $path .= '\\';
+    } else {
+      if ($path[strlen($path)-1] != '/')
+        $path .= '/';
+    }
+    if (!array_key_exists($domain, $text_domains)) {
+      // Initialize an empty domain object.
+      $text_domains[$domain] = new domain();
+    }
+    $text_domains[$domain]->path = $path;
+}
+
+/**
+ * Specify the character encoding in which the messages from the DOMAIN message catalog will be returned.
+ */
+function _bind_textdomain_codeset($domain, $codeset) {
+    global $text_domains;
+    $text_domains[$domain]->codeset = $codeset;
+}
+
+/**
+ * Sets the default domain.
+ */
+function _textdomain($domain) {
+    global $default_domain;
+    $default_domain = $domain;
+}
+
+/**
+ * Lookup a message in the current domain.
+ */
+function _gettext($msgid) {
+    $l10n = _get_reader();
+    return _encode($l10n->translate($msgid));
+}
+
+/**
+ * Alias for gettext.
+ */
+function __($msgid) {
+    return _gettext($msgid);
+}
+
+/**
+ * Plural version of gettext.
+ */
+function _ngettext($singular, $plural, $number) {
+    $l10n = _get_reader();
+    return _encode($l10n->ngettext($singular, $plural, $number));
+}
+
+/**
+ * Override the current domain.
+ */
+function _dgettext($domain, $msgid) {
+    $l10n = _get_reader($domain);
+    return _encode($l10n->translate($msgid));
+}
+
+/**
+ * Plural version of dgettext.
+ */
+function _dngettext($domain, $singular, $plural, $number) {
+    $l10n = _get_reader($domain);
+    return _encode($l10n->ngettext($singular, $plural, $number));
+}
+
+/**
+ * Overrides the domain and category for a single lookup.
+ */
+function _dcgettext($domain, $msgid, $category) {
+    $l10n = _get_reader($domain, $category);
+    return _encode($l10n->translate($msgid));
+}
+/**
+ * Plural version of dcgettext.
+ */
+function _dcngettext($domain, $singular, $plural, $number, $category) {
+    $l10n = _get_reader($domain, $category);
+    return _encode($l10n->ngettext($singular, $plural, $number));
+}
+
+/**
+ * Context version of gettext.
+ */
+function _pgettext($context, $msgid) {
+    $l10n = _get_reader();
+    return _encode($l10n->pgettext($context, $msgid));
+}
+
+/**
+ * Override the current domain in a context gettext call.
+ */
+function _dpgettext($domain, $context, $msgid) {
+    $l10n = _get_reader($domain);
+    return _encode($l10n->pgettext($context, $msgid));
+}
+
+/**
+ * Overrides the domain and category for a single context-based lookup.
+ */
+function _dcpgettext($domain, $context, $msgid, $category) {
+    $l10n = _get_reader($domain, $category);
+    return _encode($l10n->pgettext($context, $msgid));
+}
+
+/**
+ * Context version of ngettext.
+ */
+function _npgettext($context, $singular, $plural) {
+    $l10n = _get_reader();
+    return _encode($l10n->npgettext($context, $singular, $plural));
+}
+
+/**
+ * Override the current domain in a context ngettext call.
+ */
+function _dnpgettext($domain, $context, $singular, $plural) {
+    $l10n = _get_reader($domain);
+    return _encode($l10n->npgettext($context, $singular, $plural));
+}
+
+/**
+ * Overrides the domain and category for a plural context-based lookup.
+ */
+function _dcnpgettext($domain, $context, $singular, $plural, $category) {
+    $l10n = _get_reader($domain, $category);
+    return _encode($l10n->npgettext($context, $singular, $plural));
+}
+
+
+
+// Wrappers to use if the standard gettext functions are available,
+// but the current locale is not supported by the system.
+// Use the standard impl if the current locale is supported, use the
+// custom impl otherwise.
+
+function T_setlocale($category, $locale) {
+    return _setlocale($category, $locale);
+}
+
+function T_bindtextdomain($domain, $path) {
+    if (_check_locale_and_function()) return bindtextdomain($domain, $path);
+    else return _bindtextdomain($domain, $path);
+}
+function T_bind_textdomain_codeset($domain, $codeset) {
+    // bind_textdomain_codeset is available only in PHP 4.2.0+
+    if (_check_locale_and_function('bind_textdomain_codeset'))
+        return bind_textdomain_codeset($domain, $codeset);
+    else return _bind_textdomain_codeset($domain, $codeset);
+}
+function T_textdomain($domain) {
+    if (_check_locale_and_function()) return textdomain($domain);
+    else return _textdomain($domain);
+}
+function T_gettext($msgid) {
+    if (_check_locale_and_function()) return gettext($msgid);
+    else return _gettext($msgid);
+}
+function T_($msgid) {
+    if (_check_locale_and_function()) return _($msgid);
+    return __($msgid);
+}
+function T_ngettext($singular, $plural, $number) {
+    if (_check_locale_and_function())
+        return ngettext($singular, $plural, $number);
+    else return _ngettext($singular, $plural, $number);
+}
+function T_dgettext($domain, $msgid) {
+    if (_check_locale_and_function()) return dgettext($domain, $msgid);
+    else return _dgettext($domain, $msgid);
+}
+function T_dngettext($domain, $singular, $plural, $number) {
+    if (_check_locale_and_function())
+        return dngettext($domain, $singular, $plural, $number);
+    else return _dngettext($domain, $singular, $plural, $number);
+}
+function T_dcgettext($domain, $msgid, $category) {
+    if (_check_locale_and_function())
+        return dcgettext($domain, $msgid, $category);
+    else return _dcgettext($domain, $msgid, $category);
+}
+function T_dcngettext($domain, $singular, $plural, $number, $category) {
+    if (_check_locale_and_function())
+      return dcngettext($domain, $singular, $plural, $number, $category);
+    else return _dcngettext($domain, $singular, $plural, $number, $category);
+}
+
+function T_pgettext($context, $msgid) {
+  if (_check_locale_and_function('pgettext'))
+      return pgettext($context, $msgid);
+  else
+      return _pgettext($context, $msgid);
+}
+
+function T_dpgettext($domain, $context, $msgid) {
+  if (_check_locale_and_function('dpgettext'))
+      return dpgettext($domain, $context, $msgid);
+  else
+      return _dpgettext($domain, $context, $msgid);
+}
+
+function T_dcpgettext($domain, $context, $msgid, $category) {
+  if (_check_locale_and_function('dcpgettext'))
+      return dcpgettext($domain, $context, $msgid, $category);
+  else
+      return _dcpgettext($domain, $context, $msgid, $category);
+}
+
+function T_npgettext($context, $singular, $plural, $number) {
+    if (_check_locale_and_function('npgettext'))
+        return npgettext($context, $singular, $plural, $number);
+    else
+        return _npgettext($context, $singular, $plural, $number);
+}
+
+function T_dnpgettext($domain, $context, $singular, $plural, $number) {
+  if (_check_locale_and_function('dnpgettext'))
+      return dnpgettext($domain, $context, $singular, $plural, $number);
+  else
+      return _dnpgettext($domain, $context, $singular, $plural, $number);
+}
+
+function T_dcnpgettext($domain, $context, $singular, $plural,
+                       $number, $category) {
+    if (_check_locale_and_function('dcnpgettext'))
+        return dcnpgettext($domain, $context, $singular,
+                           $plural, $number, $category);
+    else
+        return _dcnpgettext($domain, $context, $singular,
+                            $plural, $number, $category);
+}
+
+
+
+// Wrappers used as a drop in replacement for the standard gettext functions
+
+if (!function_exists('gettext')) {
+    function bindtextdomain($domain, $path) {
+        return _bindtextdomain($domain, $path);
+    }
+    function bind_textdomain_codeset($domain, $codeset) {
+        return _bind_textdomain_codeset($domain, $codeset);
+    }
+    function textdomain($domain) {
+        return _textdomain($domain);
+    }
+    function gettext($msgid) {
+        return _gettext($msgid);
+    }
+    function _($msgid) {
+        return __($msgid);
+    }
+    function ngettext($singular, $plural, $number) {
+        return _ngettext($singular, $plural, $number);
+    }
+    function dgettext($domain, $msgid) {
+        return _dgettext($domain, $msgid);
+    }
+    function dngettext($domain, $singular, $plural, $number) {
+        return _dngettext($domain, $singular, $plural, $number);
+    }
+    function dcgettext($domain, $msgid, $category) {
+        return _dcgettext($domain, $msgid, $category);
+    }
+    function dcngettext($domain, $singular, $plural, $number, $category) {
+        return _dcngettext($domain, $singular, $plural, $number, $category);
+    }
+    function pgettext($context, $msgid) {
+        return _pgettext($context, $msgid);
+    }
+    function npgettext($context, $singular, $plural, $number) {
+        return _npgettext($context, $singular, $plural, $number);
+    }
+    function dpgettext($domain, $context, $msgid) {
+        return _dpgettext($domain, $context, $msgid);
+    }
+    function dnpgettext($domain, $context, $singular, $plural, $number) {
+        return _dnpgettext($domain, $context, $singular, $plural, $number);
+    }
+    function dcpgettext($domain, $context, $msgid, $category) {
+        return _dcpgettext($domain, $context, $msgid, $category);
+    }
+    function dcnpgettext($domain, $context, $singular, $plural,
+                         $number, $category) {
+      return _dcnpgettext($domain, $context, $singular, $plural,
+                          $number, $category);
+    }
+}
+
+?>
diff --git a/inc/lib/gettext/gettext.php b/inc/lib/gettext/gettext.php
new file mode 100755
index 00000000..5064047c
--- /dev/null
+++ b/inc/lib/gettext/gettext.php
@@ -0,0 +1,432 @@
+<?php
+/*
+   Copyright (c) 2003, 2009 Danilo Segan <danilo@kvota.net>.
+   Copyright (c) 2005 Nico Kaiser <nico@siriux.net>
+
+   This file is part of PHP-gettext.
+
+   PHP-gettext is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   PHP-gettext is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with PHP-gettext; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*/
+
+/**
+ * Provides a simple gettext replacement that works independently from
+ * the system's gettext abilities.
+ * It can read MO files and use them for translating strings.
+ * The files are passed to gettext_reader as a Stream (see streams.php)
+ *
+ * This version has the ability to cache all strings and translations to
+ * speed up the string lookup.
+ * While the cache is enabled by default, it can be switched off with the
+ * second parameter in the constructor (e.g. whenusing very large MO files
+ * that you don't want to keep in memory)
+ */
+class gettext_reader {
+  //public:
+   var $error = 0; // public variable that holds error code (0 if no error)
+
+   //private:
+  var $BYTEORDER = 0;        // 0: low endian, 1: big endian
+  var $STREAM = NULL;
+  var $short_circuit = false;
+  var $enable_cache = false;
+  var $originals = NULL;      // offset of original table
+  var $translations = NULL;    // offset of translation table
+  var $pluralheader = NULL;    // cache header field for plural forms
+  var $total = 0;          // total string count
+  var $table_originals = NULL;  // table for original strings (offsets)
+  var $table_translations = NULL;  // table for translated strings (offsets)
+  var $cache_translations = NULL;  // original -> translation mapping
+
+
+  /* Methods */
+
+
+  /**
+   * Reads a 32bit Integer from the Stream
+   *
+   * @access private
+   * @return Integer from the Stream
+   */
+  function readint() {
+      if ($this->BYTEORDER == 0) {
+        // low endian
+        $input=unpack('V', $this->STREAM->read(4));
+        return array_shift($input);
+      } else {
+        // big endian
+        $input=unpack('N', $this->STREAM->read(4));
+        return array_shift($input);
+      }
+    }
+
+  function read($bytes) {
+    return $this->STREAM->read($bytes);
+  }
+
+  /**
+   * Reads an array of Integers from the Stream
+   *
+   * @param int count How many elements should be read
+   * @return Array of Integers
+   */
+  function readintarray($count) {
+    if ($this->BYTEORDER == 0) {
+        // low endian
+        return unpack('V'.$count, $this->STREAM->read(4 * $count));
+      } else {
+        // big endian
+        return unpack('N'.$count, $this->STREAM->read(4 * $count));
+      }
+  }
+
+  /**
+   * Constructor
+   *
+   * @param object Reader the StreamReader object
+   * @param boolean enable_cache Enable or disable caching of strings (default on)
+   */
+  function gettext_reader($Reader, $enable_cache = true) {
+    // If there isn't a StreamReader, turn on short circuit mode.
+    if (! $Reader || isset($Reader->error) ) {
+      $this->short_circuit = true;
+      return;
+    }
+
+    // Caching can be turned off
+    $this->enable_cache = $enable_cache;
+
+    $MAGIC1 = "\x95\x04\x12\xde";
+    $MAGIC2 = "\xde\x12\x04\x95";
+
+    $this->STREAM = $Reader;
+    $magic = $this->read(4);
+    if ($magic == $MAGIC1) {
+      $this->BYTEORDER = 1;
+    } elseif ($magic == $MAGIC2) {
+      $this->BYTEORDER = 0;
+    } else {
+      $this->error = 1; // not MO file
+      return false;
+    }
+
+    // FIXME: Do we care about revision? We should.
+    $revision = $this->readint();
+
+    $this->total = $this->readint();
+    $this->originals = $this->readint();
+    $this->translations = $this->readint();
+  }
+
+  /**
+   * Loads the translation tables from the MO file into the cache
+   * If caching is enabled, also loads all strings into a cache
+   * to speed up translation lookups
+   *
+   * @access private
+   */
+  function load_tables() {
+    if (is_array($this->cache_translations) &&
+      is_array($this->table_originals) &&
+      is_array($this->table_translations))
+      return;
+
+    /* get original and translations tables */
+    if (!is_array($this->table_originals)) {
+      $this->STREAM->seekto($this->originals);
+      $this->table_originals = $this->readintarray($this->total * 2);
+    }
+    if (!is_array($this->table_translations)) {
+      $this->STREAM->seekto($this->translations);
+      $this->table_translations = $this->readintarray($this->total * 2);
+    }
+
+    if ($this->enable_cache) {
+      $this->cache_translations = array ();
+      /* read all strings in the cache */
+      for ($i = 0; $i < $this->total; $i++) {
+        $this->STREAM->seekto($this->table_originals[$i * 2 + 2]);
+        $original = $this->STREAM->read($this->table_originals[$i * 2 + 1]);
+        $this->STREAM->seekto($this->table_translations[$i * 2 + 2]);
+        $translation = $this->STREAM->read($this->table_translations[$i * 2 + 1]);
+        $this->cache_translations[$original] = $translation;
+      }
+    }
+  }
+
+  /**
+   * Returns a string from the "originals" table
+   *
+   * @access private
+   * @param int num Offset number of original string
+   * @return string Requested string if found, otherwise ''
+   */
+  function get_original_string($num) {
+    $length = $this->table_originals[$num * 2 + 1];
+    $offset = $this->table_originals[$num * 2 + 2];
+    if (! $length)
+      return '';
+    $this->STREAM->seekto($offset);
+    $data = $this->STREAM->read($length);
+    return (string)$data;
+  }
+
+  /**
+   * Returns a string from the "translations" table
+   *
+   * @access private
+   * @param int num Offset number of original string
+   * @return string Requested string if found, otherwise ''
+   */
+  function get_translation_string($num) {
+    $length = $this->table_translations[$num * 2 + 1];
+    $offset = $this->table_translations[$num * 2 + 2];
+    if (! $length)
+      return '';
+    $this->STREAM->seekto($offset);
+    $data = $this->STREAM->read($length);
+    return (string)$data;
+  }
+
+  /**
+   * Binary search for string
+   *
+   * @access private
+   * @param string string
+   * @param int start (internally used in recursive function)
+   * @param int end (internally used in recursive function)
+   * @return int string number (offset in originals table)
+   */
+  function find_string($string, $start = -1, $end = -1) {
+    if (($start == -1) or ($end == -1)) {
+      // find_string is called with only one parameter, set start end end
+      $start = 0;
+      $end = $this->total;
+    }
+    if (abs($start - $end) <= 1) {
+      // We're done, now we either found the string, or it doesn't exist
+      $txt = $this->get_original_string($start);
+      if ($string == $txt)
+        return $start;
+      else
+        return -1;
+    } else if ($start > $end) {
+      // start > end -> turn around and start over
+      return $this->find_string($string, $end, $start);
+    } else {
+      // Divide table in two parts
+      $half = (int)(($start + $end) / 2);
+      $cmp = strcmp($string, $this->get_original_string($half));
+      if ($cmp == 0)
+        // string is exactly in the middle => return it
+        return $half;
+      else if ($cmp < 0)
+        // The string is in the upper half
+        return $this->find_string($string, $start, $half);
+      else
+        // The string is in the lower half
+        return $this->find_string($string, $half, $end);
+    }
+  }
+
+  /**
+   * Translates a string
+   *
+   * @access public
+   * @param string string to be translated
+   * @return string translated string (or original, if not found)
+   */
+  function translate($string) {
+    if ($this->short_circuit)
+      return $string;
+    $this->load_tables();
+
+    if ($this->enable_cache) {
+      // Caching enabled, get translated string from cache
+      if (array_key_exists($string, $this->cache_translations))
+        return $this->cache_translations[$string];
+      else
+        return $string;
+    } else {
+      // Caching not enabled, try to find string
+      $num = $this->find_string($string);
+      if ($num == -1)
+        return $string;
+      else
+        return $this->get_translation_string($num);
+    }
+  }
+
+  /**
+   * Sanitize plural form expression for use in PHP eval call.
+   *
+   * @access private
+   * @return string sanitized plural form expression
+   */
+  function sanitize_plural_expression($expr) {
+    // Get rid of disallowed characters.
+    $expr = preg_replace('@[^a-zA-Z0-9_:;\(\)\?\|\&=!<>+*/\%-]@', '', $expr);
+
+    // Add parenthesis for tertiary '?' operator.
+    $expr .= ';';
+    $res = '';
+    $p = 0;
+    for ($i = 0; $i < strlen($expr); $i++) {
+      $ch = $expr[$i];
+      switch ($ch) {
+      case '?':
+        $res .= ' ? (';
+        $p++;
+        break;
+      case ':':
+        $res .= ') : (';
+        break;
+      case ';':
+        $res .= str_repeat( ')', $p) . ';';
+        $p = 0;
+        break;
+      default:
+        $res .= $ch;
+      }
+    }
+    return $res;
+  }
+
+  /**
+   * Parse full PO header and extract only plural forms line.
+   *
+   * @access private
+   * @return string verbatim plural form header field
+   */
+  function extract_plural_forms_header_from_po_header($header) {
+    if (preg_match("/(^|\n)plural-forms: ([^\n]*)\n/i", $header, $regs))
+      $expr = $regs[2];
+    else
+      $expr = "nplurals=2; plural=n == 1 ? 0 : 1;";
+    return $expr;
+  }
+
+  /**
+   * Get possible plural forms from MO header
+   *
+   * @access private
+   * @return string plural form header
+   */
+  function get_plural_forms() {
+    // lets assume message number 0 is header
+    // this is true, right?
+    $this->load_tables();
+
+    // cache header field for plural forms
+    if (! is_string($this->pluralheader)) {
+      if ($this->enable_cache) {
+        $header = $this->cache_translations[""];
+      } else {
+        $header = $this->get_translation_string(0);
+      }
+      $expr = $this->extract_plural_forms_header_from_po_header($header);
+      $this->pluralheader = $this->sanitize_plural_expression($expr);
+    }
+    return $this->pluralheader;
+  }
+
+  /**
+   * Detects which plural form to take
+   *
+   * @access private
+   * @param n count
+   * @return int array index of the right plural form
+   */
+  function select_string($n) {
+    $string = $this->get_plural_forms();
+    $string = str_replace('nplurals',"\$total",$string);
+    $string = str_replace("n",$n,$string);
+    $string = str_replace('plural',"\$plural",$string);
+
+    $total = 0;
+    $plural = 0;
+
+    eval("$string");
+    if ($plural >= $total) $plural = $total - 1;
+    return $plural;
+  }
+
+  /**
+   * Plural version of gettext
+   *
+   * @access public
+   * @param string single
+   * @param string plural
+   * @param string number
+   * @return translated plural form
+   */
+  function ngettext($single, $plural, $number) {
+    if ($this->short_circuit) {
+      if ($number != 1)
+        return $plural;
+      else
+        return $single;
+    }
+
+    // find out the appropriate form
+    $select = $this->select_string($number);
+
+    // this should contains all strings separated by NULLs
+    $key = $single . chr(0) . $plural;
+
+
+    if ($this->enable_cache) {
+      if (! array_key_exists($key, $this->cache_translations)) {
+        return ($number != 1) ? $plural : $single;
+      } else {
+        $result = $this->cache_translations[$key];
+        $list = explode(chr(0), $result);
+        return $list[$select];
+      }
+    } else {
+      $num = $this->find_string($key);
+      if ($num == -1) {
+        return ($number != 1) ? $plural : $single;
+      } else {
+        $result = $this->get_translation_string($num);
+        $list = explode(chr(0), $result);
+        return $list[$select];
+      }
+    }
+  }
+
+  function pgettext($context, $msgid) {
+    $key = $context . chr(4) . $msgid;
+    $ret = $this->translate($key);
+    if (strpos($ret, "\004") !== FALSE) {
+      return $msgid;
+    } else {
+      return $ret;
+    }
+  }
+
+  function npgettext($context, $singular, $plural, $number) {
+    $key = $context . chr(4) . $singular;
+    $ret = $this->ngettext($key, $plural, $number);
+    if (strpos($ret, "\004") !== FALSE) {
+      return $singular;
+    } else {
+      return $ret;
+    }
+
+  }
+}
+
+?>
diff --git a/inc/lib/gettext/streams.php b/inc/lib/gettext/streams.php
new file mode 100644
index 00000000..3cdc1584
--- /dev/null
+++ b/inc/lib/gettext/streams.php
@@ -0,0 +1,167 @@
+<?php
+/*
+   Copyright (c) 2003, 2005, 2006, 2009 Danilo Segan <danilo@kvota.net>.
+
+   This file is part of PHP-gettext.
+
+   PHP-gettext is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   PHP-gettext is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with PHP-gettext; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*/
+
+
+  // Simple class to wrap file streams, string streams, etc.
+  // seek is essential, and it should be byte stream
+class StreamReader {
+  // should return a string [FIXME: perhaps return array of bytes?]
+  function read($bytes) {
+    return false;
+  }
+
+  // should return new position
+  function seekto($position) {
+    return false;
+  }
+
+  // returns current position
+  function currentpos() {
+    return false;
+  }
+
+  // returns length of entire stream (limit for seekto()s)
+  function length() {
+    return false;
+  }
+};
+
+class StringReader {
+  var $_pos;
+  var $_str;
+
+  function StringReader($str='') {
+    $this->_str = $str;
+    $this->_pos = 0;
+  }
+
+  function read($bytes) {
+    $data = substr($this->_str, $this->_pos, $bytes);
+    $this->_pos += $bytes;
+    if (strlen($this->_str)<$this->_pos)
+      $this->_pos = strlen($this->_str);
+
+    return $data;
+  }
+
+  function seekto($pos) {
+    $this->_pos = $pos;
+    if (strlen($this->_str)<$this->_pos)
+      $this->_pos = strlen($this->_str);
+    return $this->_pos;
+  }
+
+  function currentpos() {
+    return $this->_pos;
+  }
+
+  function length() {
+    return strlen($this->_str);
+  }
+
+};
+
+
+class FileReader {
+  var $_pos;
+  var $_fd;
+  var $_length;
+
+  function FileReader($filename) {
+    if (file_exists($filename)) {
+
+      $this->_length=filesize($filename);
+      $this->_pos = 0;
+      $this->_fd = fopen($filename,'rb');
+      if (!$this->_fd) {
+        $this->error = 3; // Cannot read file, probably permissions
+        return false;
+      }
+    } else {
+      $this->error = 2; // File doesn't exist
+      return false;
+    }
+  }
+
+  function read($bytes) {
+    if ($bytes) {
+      fseek($this->_fd, $this->_pos);
+
+      // PHP 5.1.1 does not read more than 8192 bytes in one fread()
+      // the discussions at PHP Bugs suggest it's the intended behaviour
+      $data = '';
+      while ($bytes > 0) {
+        $chunk  = fread($this->_fd, $bytes);
+        $data  .= $chunk;
+        $bytes -= strlen($chunk);
+      }
+      $this->_pos = ftell($this->_fd);
+
+      return $data;
+    } else return '';
+  }
+
+  function seekto($pos) {
+    fseek($this->_fd, $pos);
+    $this->_pos = ftell($this->_fd);
+    return $this->_pos;
+  }
+
+  function currentpos() {
+    return $this->_pos;
+  }
+
+  function length() {
+    return $this->_length;
+  }
+
+  function close() {
+    fclose($this->_fd);
+  }
+
+};
+
+// Preloads entire file in memory first, then creates a StringReader
+// over it (it assumes knowledge of StringReader internals)
+class CachedFileReader extends StringReader {
+  function CachedFileReader($filename) {
+    if (file_exists($filename)) {
+
+      $length=filesize($filename);
+      $fd = fopen($filename,'rb');
+
+      if (!$fd) {
+        $this->error = 3; // Cannot read file, probably permissions
+        return false;
+      }
+      $this->_str = fread($fd, $length);
+      fclose($fd);
+
+    } else {
+      $this->error = 2; // File doesn't exist
+      return false;
+    }
+  }
+};
+
+
+?>
diff --git a/inc/lib/gettext/tests/LocalesTest.php b/inc/lib/gettext/tests/LocalesTest.php
new file mode 100644
index 00000000..fab21f86
--- /dev/null
+++ b/inc/lib/gettext/tests/LocalesTest.php
@@ -0,0 +1,75 @@
+<?php
+require_once('PHPUnit/Framework.php');
+require_once('gettext.inc');
+
+class LocaleTest extends PHPUnit_Framework_TestCase
+{
+  public function test_setlocale()
+  {
+    putenv("LC_ALL=");
+    // _setlocale defaults to a locale name from environment variable LANG.
+    putenv("LANG=sr_RS");
+    $this->assertEquals('sr_RS', _setlocale(LC_MESSAGES, 0));
+  }
+
+  public function test_setlocale_system()
+  {
+    putenv("LC_ALL=");
+    // For an existing locale, it never needs emulation.
+    putenv("LANG=C");
+    _setlocale(LC_MESSAGES, "");
+    $this->assertEquals(0, locale_emulation());
+  }
+
+  public function test_setlocale_emulation()
+  {
+    putenv("LC_ALL=");
+    // If we set it to a non-existent locale, it still works, but uses
+    // emulation.
+    _setlocale(LC_MESSAGES, "xxx_XXX");
+    $this->assertEquals('xxx_XXX', _setlocale(LC_MESSAGES, 0));
+    $this->assertEquals(1, locale_emulation());
+  }
+
+  public function test_get_list_of_locales()
+  {
+    // For a locale containing country code, we prefer
+    // full locale name, but if that's not found, fall back
+    // to the language only locale name.
+    $this->assertEquals(array("sr_RS", "sr"),
+                        get_list_of_locales("sr_RS"));
+
+    // If language code is used, it's the only thing returned.
+    $this->assertEquals(array("sr"),
+                        get_list_of_locales("sr"));
+
+    // There is support for language and charset only.
+    $this->assertEquals(array("sr.UTF-8", "sr"),
+                        get_list_of_locales("sr.UTF-8"));
+
+    // It can also split out character set from the full locale name.
+    $this->assertEquals(array("sr_RS.UTF-8", "sr_RS", "sr"),
+                        get_list_of_locales("sr_RS.UTF-8"));
+
+    // There is support for @modifier in locale names as well.
+    $this->assertEquals(array("sr_RS.UTF-8@latin", "sr_RS@latin", "sr@latin",
+                              "sr_RS.UTF-8", "sr_RS", "sr"),
+                        get_list_of_locales("sr_RS.UTF-8@latin"));
+
+    // We can pass in only language and modifier.
+    $this->assertEquals(array("sr@latin", "sr"),
+                        get_list_of_locales("sr@latin"));
+
+
+    // If locale name is not following the regular POSIX pattern,
+    // it's used verbatim.
+    $this->assertEquals(array("something"),
+                        get_list_of_locales("something"));
+
+    // Passing in an empty string returns an empty array.
+    $this->assertEquals(array(),
+                        get_list_of_locales(""));
+  }
+}
+
+?>
diff --git a/inc/lib/gettext/tests/ParsingTest.php b/inc/lib/gettext/tests/ParsingTest.php
new file mode 100644
index 00000000..ff561989
--- /dev/null
+++ b/inc/lib/gettext/tests/ParsingTest.php
@@ -0,0 +1,60 @@
+<?php
+require_once('PHPUnit/Framework.php');
+//require_once('gettext.php');
+
+class ParsingTest extends PHPUnit_Framework_TestCase
+{
+  public function test_extract_plural_forms_header_from_po_header()
+  {
+    $parser = new gettext_reader(NULL);
+    // It defaults to a "Western-style" plural header.
+    $this->assertEquals(
+      'nplurals=2; plural=n == 1 ? 0 : 1;',
+      $parser->extract_plural_forms_header_from_po_header(""));
+
+    // Extracting it from the middle of the header works.
+    $this->assertEquals(
+      'nplurals=1; plural=0;',
+      $parser->extract_plural_forms_header_from_po_header(
+        "Content-type: text/html; charset=UTF-8\n"
+        ."Plural-Forms: nplurals=1; plural=0;\n"
+        ."Last-Translator: nobody\n"
+      ));
+
+    // It's also case-insensitive.
+    $this->assertEquals(
+      'nplurals=1; plural=0;',
+      $parser->extract_plural_forms_header_from_po_header(
+        "PLURAL-forms: nplurals=1; plural=0;\n"
+      ));
+
+    // It falls back to default if it's not on a separate line.
+    $this->assertEquals(
+      'nplurals=2; plural=n == 1 ? 0 : 1;',
+      $parser->extract_plural_forms_header_from_po_header(
+       "Content-type: text/html; charset=UTF-8" // note the missing \n here
+        ."Plural-Forms: nplurals=1; plural=0;\n"
+        ."Last-Translator: nobody\n"
+      ));
+  }
+
+  /**
+   * @dataProvider data_provider_test_npgettext
+   */
+  public function test_npgettext($number, $expected) {
+    $parser = new gettext_reader(NULL);
+    $result = $parser->npgettext("context",
+                                 "%d pig went to the market\n",
+                                 "%d pigs went to the market\n",
+                                 $number);
+    $this->assertSame($expected, $result);
+  }
+  public static function data_provider_test_npgettext() {
+    return array(
+                 array(1, "%d pig went to the market\n"),
+                 array(2, "%d pigs went to the market\n"),
+                 );
+  }
+
+}
+?>
diff --git a/inc/lib/minify/FirePHP.php b/inc/lib/minify/FirePHP.php
new file mode 100755
index 00000000..d301a641
--- /dev/null
+++ b/inc/lib/minify/FirePHP.php
@@ -0,0 +1,1370 @@
+<?php
+/**
+ * *** BEGIN LICENSE BLOCK *****
+ *  
+ * This file is part of FirePHP (http://www.firephp.org/).
+ * 
+ * Software License Agreement (New BSD License)
+ * 
+ * Copyright (c) 2006-2008, Christoph Dorn
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 
+ *     * Redistributions of source code must retain the above copyright notice,
+ *       this list of conditions and the following disclaimer.
+ * 
+ *     * Redistributions in binary form must reproduce the above copyright notice,
+ *       this list of conditions and the following disclaimer in the documentation
+ *       and/or other materials provided with the distribution.
+ * 
+ *     * Neither the name of Christoph Dorn nor the names of its
+ *       contributors may be used to endorse or promote products derived from this
+ *       software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * ***** END LICENSE BLOCK *****
+ * 
+ * @copyright   Copyright (C) 2007-2008 Christoph Dorn
+ * @author      Christoph Dorn <christoph@christophdorn.com>
+ * @license     http://www.opensource.org/licenses/bsd-license.php
+ * @package     FirePHP
+ */
+ 
+ 
+/**
+ * Sends the given data to the FirePHP Firefox Extension.
+ * The data can be displayed in the Firebug Console or in the
+ * "Server" request tab.
+ * 
+ * For more information see: http://www.firephp.org/
+ * 
+ * @copyright   Copyright (C) 2007-2008 Christoph Dorn
+ * @author      Christoph Dorn <christoph@christophdorn.com>
+ * @license     http://www.opensource.org/licenses/bsd-license.php
+ * @package     FirePHP
+ */
+class FirePHP {
+  
+  /**
+   * FirePHP version
+   *
+   * @var string
+   */
+  const VERSION = '0.2.0';
+  
+  /**
+   * Firebug LOG level
+   *
+   * Logs a message to firebug console.
+   * 
+   * @var string
+   */
+  const LOG = 'LOG';
+  
+  /**
+   * Firebug INFO level
+   *
+   * Logs a message to firebug console and displays an info icon before the message.
+   * 
+   * @var string
+   */
+  const INFO = 'INFO';
+  
+  /**
+   * Firebug WARN level
+   *
+   * Logs a message to firebug console, displays an warning icon before the message and colors the line turquoise.
+   * 
+   * @var string
+   */
+  const WARN = 'WARN';
+  
+  /**
+   * Firebug ERROR level
+   *
+   * Logs a message to firebug console, displays an error icon before the message and colors the line yellow. Also increments the firebug error count.
+   * 
+   * @var string
+   */
+  const ERROR = 'ERROR';
+  
+  /**
+   * Dumps a variable to firebug's server panel
+   *
+   * @var string
+   */
+  const DUMP = 'DUMP';
+  
+  /**
+   * Displays a stack trace in firebug console
+   *
+   * @var string
+   */
+  const TRACE = 'TRACE';
+  
+  /**
+   * Displays an exception in firebug console
+   * 
+   * Increments the firebug error count.
+   *
+   * @var string
+   */
+  const EXCEPTION = 'EXCEPTION';
+  
+  /**
+   * Displays an table in firebug console
+   *
+   * @var string
+   */
+  const TABLE = 'TABLE';
+  
+  /**
+   * Starts a group in firebug console
+   * 
+   * @var string
+   */
+  const GROUP_START = 'GROUP_START';
+  
+  /**
+   * Ends a group in firebug console
+   * 
+   * @var string
+   */
+  const GROUP_END = 'GROUP_END';
+  
+  /**
+   * Singleton instance of FirePHP
+   *
+   * @var FirePHP
+   */
+  protected static $instance = null;
+  
+  /**
+   * Wildfire protocol message index
+   *
+   * @var int
+   */
+  protected $messageIndex = 1;
+    
+  /**
+   * Options for the library
+   * 
+   * @var array
+   */
+  protected $options = array();
+  
+  /**
+   * Filters used to exclude object members when encoding
+   * 
+   * @var array
+   */
+  protected $objectFilters = array();
+  
+  /**
+   * A stack of objects used to detect recursion during object encoding
+   * 
+   * @var object
+   */
+  protected $objectStack = array();
+  
+  /**
+   * Flag to enable/disable logging
+   * 
+   * @var boolean
+   */
+  protected $enabled = true;
+  
+  /**
+   * The object constructor
+   */
+  function __construct() {
+    $this->options['maxObjectDepth'] = 10;
+    $this->options['maxArrayDepth'] = 20;
+    $this->options['useNativeJsonEncode'] = true;
+    $this->options['includeLineNumbers'] = true;
+  }
+    
+  /**
+   * When the object gets serialized only include specific object members.
+   * 
+   * @return array
+   */  
+  public function __sleep() {
+    return array('options','objectFilters','enabled');
+  }
+    
+  /**
+   * Gets singleton instance of FirePHP
+   *
+   * @param boolean $AutoCreate
+   * @return FirePHP
+   */
+  public static function getInstance($AutoCreate=false) {
+    if($AutoCreate===true && !self::$instance) {
+      self::init();
+    }
+    return self::$instance;
+  }
+   
+  /**
+   * Creates FirePHP object and stores it for singleton access
+   *
+   * @return FirePHP
+   */
+  public static function init() {
+    return self::$instance = new self();
+  }
+  
+  /**
+   * Enable and disable logging to Firebug
+   * 
+   * @param boolean $Enabled TRUE to enable, FALSE to disable
+   * @return void
+   */
+  public function setEnabled($Enabled) {
+    $this->enabled = $Enabled;
+  }
+  
+  /**
+   * Check if logging is enabled
+   * 
+   * @return boolean TRUE if enabled
+   */
+  public function getEnabled() {
+    return $this->enabled;
+  }
+  
+  /**
+   * Specify a filter to be used when encoding an object
+   * 
+   * Filters are used to exclude object members.
+   * 
+   * @param string $Class The class name of the object
+   * @param array $Filter An array or members to exclude
+   * @return void
+   */
+  public function setObjectFilter($Class, $Filter) {
+    $this->objectFilters[$Class] = $Filter;
+  }
+  
+  /**
+   * Set some options for the library
+   * 
+   * Options:
+   *  - maxObjectDepth: The maximum depth to traverse objects (default: 10)
+   *  - maxArrayDepth: The maximum depth to traverse arrays (default: 20)
+   *  - useNativeJsonEncode: If true will use json_encode() (default: true)
+   *  - includeLineNumbers: If true will include line numbers and filenames (default: true)
+   * 
+   * @param array $Options The options to be set
+   * @return void
+   */
+  public function setOptions($Options) {
+    $this->options = array_merge($this->options,$Options);
+  }
+  
+  /**
+   * Register FirePHP as your error handler
+   * 
+   * Will throw exceptions for each php error.
+   */
+  public function registerErrorHandler()
+  {
+    //NOTE: The following errors will not be caught by this error handler:
+    //      E_ERROR, E_PARSE, E_CORE_ERROR,
+    //      E_CORE_WARNING, E_COMPILE_ERROR,
+    //      E_COMPILE_WARNING, E_STRICT
+    
+    set_error_handler(array($this,'errorHandler'));     
+  }
+
+  /**
+   * FirePHP's error handler
+   * 
+   * Throws exception for each php error that will occur.
+   *
+   * @param int $errno
+   * @param string $errstr
+   * @param string $errfile
+   * @param int $errline
+   * @param array $errcontext
+   */
+  public function errorHandler($errno, $errstr, $errfile, $errline, $errcontext)
+  {
+    // Don't throw exception if error reporting is switched off
+    if (error_reporting() == 0) {
+      return;
+    }
+    // Only throw exceptions for errors we are asking for
+    if (error_reporting() & $errno) {
+      throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
+    }
+  }
+  
+  /**
+   * Register FirePHP as your exception handler
+   */
+  public function registerExceptionHandler()
+  {
+    set_exception_handler(array($this,'exceptionHandler'));     
+  }
+  
+  /**
+   * FirePHP's exception handler
+   * 
+   * Logs all exceptions to your firebug console and then stops the script.
+   *
+   * @param Exception $Exception
+   * @throws Exception
+   */
+  function exceptionHandler($Exception) {
+    $this->fb($Exception);
+  }
+  
+  /**
+   * Set custom processor url for FirePHP
+   *
+   * @param string $URL
+   */    
+  public function setProcessorUrl($URL)
+  {
+    $this->setHeader('X-FirePHP-ProcessorURL', $URL);
+  }
+
+  /**
+   * Set custom renderer url for FirePHP
+   *
+   * @param string $URL
+   */
+  public function setRendererUrl($URL)
+  {
+    $this->setHeader('X-FirePHP-RendererURL', $URL);
+  }
+  
+  /**
+   * Start a group for following messages
+   *
+   * @param string $Name
+   * @return true
+   * @throws Exception
+   */
+  public function group($Name) {
+    return $this->fb(null, $Name, FirePHP::GROUP_START);
+  }
+  
+  /**
+   * Ends a group you have started before
+   *
+   * @return true
+   * @throws Exception
+   */
+  public function groupEnd() {
+    return $this->fb(null, null, FirePHP::GROUP_END);
+  }
+
+  /**
+   * Log object with label to firebug console
+   *
+   * @see FirePHP::LOG
+   * @param mixes $Object
+   * @param string $Label
+   * @return true
+   * @throws Exception
+   */
+  public function log($Object, $Label=null) {
+    return $this->fb($Object, $Label, FirePHP::LOG);
+  } 
+
+  /**
+   * Log object with label to firebug console
+   *
+   * @see FirePHP::INFO
+   * @param mixes $Object
+   * @param string $Label
+   * @return true
+   * @throws Exception
+   */
+  public function info($Object, $Label=null) {
+    return $this->fb($Object, $Label, FirePHP::INFO);
+  } 
+
+  /**
+   * Log object with label to firebug console
+   *
+   * @see FirePHP::WARN
+   * @param mixes $Object
+   * @param string $Label
+   * @return true
+   * @throws Exception
+   */
+  public function warn($Object, $Label=null) {
+    return $this->fb($Object, $Label, FirePHP::WARN);
+  } 
+
+  /**
+   * Log object with label to firebug console
+   *
+   * @see FirePHP::ERROR
+   * @param mixes $Object
+   * @param string $Label
+   * @return true
+   * @throws Exception
+   */
+  public function error($Object, $Label=null) {
+    return $this->fb($Object, $Label, FirePHP::ERROR);
+  } 
+
+  /**
+   * Dumps key and variable to firebug server panel
+   *
+   * @see FirePHP::DUMP
+   * @param string $Key
+   * @param mixed $Variable
+   * @return true
+   * @throws Exception
+   */
+  public function dump($Key, $Variable) {
+    return $this->fb($Variable, $Key, FirePHP::DUMP);
+  }
+  
+  /**
+   * Log a trace in the firebug console
+   *
+   * @see FirePHP::TRACE
+   * @param string $Label
+   * @return true
+   * @throws Exception
+   */
+  public function trace($Label) {
+    return $this->fb($Label, FirePHP::TRACE);
+  } 
+
+  /**
+   * Log a table in the firebug console
+   *
+   * @see FirePHP::TABLE
+   * @param string $Label
+   * @param string $Table
+   * @return true
+   * @throws Exception
+   */
+  public function table($Label, $Table) {
+    return $this->fb($Table, $Label, FirePHP::TABLE);
+  }
+  
+  /**
+   * Check if FirePHP is installed on client
+   *
+   * @return boolean
+   */
+  public function detectClientExtension() {
+    /* Check if FirePHP is installed on client */
+    if(!@preg_match_all('/\sFirePHP\/([\.|\d]*)\s?/si',$this->getUserAgent(),$m) ||
+       !version_compare($m[1][0],'0.0.6','>=')) {
+      return false;
+    }
+    return true;    
+  }
+ 
+  /**
+   * Log varible to Firebug
+   * 
+   * @see http://www.firephp.org/Wiki/Reference/Fb
+   * @param mixed $Object The variable to be logged
+   * @return true Return TRUE if message was added to headers, FALSE otherwise
+   * @throws Exception
+   */
+  public function fb($Object) {
+  
+    if(!$this->enabled) {
+      return false;
+    }
+  
+    if (headers_sent($filename, $linenum)) {
+        throw $this->newException('Headers already sent in '.$filename.' on line '.$linenum.'. Cannot send log data to FirePHP. You must have Output Buffering enabled via ob_start() or output_buffering ini directive.');
+    }
+  
+    $Type = null;
+    $Label = null;
+  
+    if(func_num_args()==1) {
+    } else
+    if(func_num_args()==2) {
+      switch(func_get_arg(1)) {
+        case self::LOG:
+        case self::INFO:
+        case self::WARN:
+        case self::ERROR:
+        case self::DUMP:
+        case self::TRACE:
+        case self::EXCEPTION:
+        case self::TABLE:
+        case self::GROUP_START:
+        case self::GROUP_END:
+          $Type = func_get_arg(1);
+          break;
+        default:
+          $Label = func_get_arg(1);
+          break;
+      }
+    } else
+    if(func_num_args()==3) {
+      $Type = func_get_arg(2);
+      $Label = func_get_arg(1);
+    } else {
+      throw $this->newException('Wrong number of arguments to fb() function!');
+    }
+  
+  
+    if(!$this->detectClientExtension()) {
+      return false;
+    }
+  
+    $meta = array();
+    $skipFinalObjectEncode = false;
+  
+    if($Object instanceof Exception) {
+
+      $meta['file'] = $this->_escapeTraceFile($Object->getFile());
+      $meta['line'] = $Object->getLine();
+      
+      $trace = $Object->getTrace();
+      if($Object instanceof ErrorException
+         && isset($trace[0]['function'])
+         && $trace[0]['function']=='errorHandler'
+         && isset($trace[0]['class'])
+         && $trace[0]['class']=='FirePHP') {
+           
+        $severity = false;
+        switch($Object->getSeverity()) {
+          case E_WARNING: $severity = 'E_WARNING'; break;
+          case E_NOTICE: $severity = 'E_NOTICE'; break;
+          case E_USER_ERROR: $severity = 'E_USER_ERROR'; break;
+          case E_USER_WARNING: $severity = 'E_USER_WARNING'; break;
+          case E_USER_NOTICE: $severity = 'E_USER_NOTICE'; break;
+          case E_STRICT: $severity = 'E_STRICT'; break;
+          case E_RECOVERABLE_ERROR: $severity = 'E_RECOVERABLE_ERROR'; break;
+          case E_DEPRECATED: $severity = 'E_DEPRECATED'; break;
+          case E_USER_DEPRECATED: $severity = 'E_USER_DEPRECATED'; break;
+        }
+           
+        $Object = array('Class'=>get_class($Object),
+                        'Message'=>$severity.': '.$Object->getMessage(),
+                        'File'=>$this->_escapeTraceFile($Object->getFile()),
+                        'Line'=>$Object->getLine(),
+                        'Type'=>'trigger',
+                        'Trace'=>$this->_escapeTrace(array_splice($trace,2)));
+        $skipFinalObjectEncode = true;
+      } else {
+        $Object = array('Class'=>get_class($Object),
+                        'Message'=>$Object->getMessage(),
+                        'File'=>$this->_escapeTraceFile($Object->getFile()),
+                        'Line'=>$Object->getLine(),
+                        'Type'=>'throw',
+                        'Trace'=>$this->_escapeTrace($trace));
+        $skipFinalObjectEncode = true;
+      }
+      $Type = self::EXCEPTION;
+      
+    } else
+    if($Type==self::TRACE) {
+      
+      $trace = debug_backtrace();
+      if(!$trace) return false;
+      for( $i=0 ; $i<sizeof($trace) ; $i++ ) {
+
+        if(isset($trace[$i]['class'])
+           && isset($trace[$i]['file'])
+           && ($trace[$i]['class']=='FirePHP'
+               || $trace[$i]['class']=='FB')
+           && (substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php'
+               || substr($this->_standardizePath($trace[$i]['file']),-29,29)=='FirePHPCore/FirePHP.class.php')) {
+          /* Skip - FB::trace(), FB::send(), $firephp->trace(), $firephp->fb() */
+        } else
+        if(isset($trace[$i]['class'])
+           && isset($trace[$i+1]['file'])
+           && $trace[$i]['class']=='FirePHP'
+           && substr($this->_standardizePath($trace[$i+1]['file']),-18,18)=='FirePHPCore/fb.php') {
+          /* Skip fb() */
+        } else
+        if($trace[$i]['function']=='fb'
+           || $trace[$i]['function']=='trace'
+           || $trace[$i]['function']=='send') {
+          $Object = array('Class'=>isset($trace[$i]['class'])?$trace[$i]['class']:'',
+                          'Type'=>isset($trace[$i]['type'])?$trace[$i]['type']:'',
+                          'Function'=>isset($trace[$i]['function'])?$trace[$i]['function']:'',
+                          'Message'=>$trace[$i]['args'][0],
+                          'File'=>isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'',
+                          'Line'=>isset($trace[$i]['line'])?$trace[$i]['line']:'',
+                          'Args'=>isset($trace[$i]['args'])?$this->encodeObject($trace[$i]['args']):'',
+                          'Trace'=>$this->_escapeTrace(array_splice($trace,$i+1)));
+
+          $skipFinalObjectEncode = true;
+          $meta['file'] = isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'';
+          $meta['line'] = isset($trace[$i]['line'])?$trace[$i]['line']:'';
+          break;
+        }
+      }
+
+    } else
+    if($Type==self::TABLE) {
+      
+      if(isset($Object[0]) && is_string($Object[0])) {
+        $Object[1] = $this->encodeTable($Object[1]);
+      } else {
+        $Object = $this->encodeTable($Object);
+      }
+
+      $skipFinalObjectEncode = true;
+      
+    } else {
+      if($Type===null) {
+        $Type = self::LOG;
+      }
+    }
+    
+    if($this->options['includeLineNumbers']) {
+      if(!isset($meta['file']) || !isset($meta['line'])) {
+
+        $trace = debug_backtrace();
+        for( $i=0 ; $trace && $i<sizeof($trace) ; $i++ ) {
+  
+          if(isset($trace[$i]['class'])
+             && isset($trace[$i]['file'])
+             && ($trace[$i]['class']=='FirePHP'
+                 || $trace[$i]['class']=='FB')
+             && (substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php'
+                 || substr($this->_standardizePath($trace[$i]['file']),-29,29)=='FirePHPCore/FirePHP.class.php')) {
+            /* Skip - FB::trace(), FB::send(), $firephp->trace(), $firephp->fb() */
+          } else
+          if(isset($trace[$i]['class'])
+             && isset($trace[$i+1]['file'])
+             && $trace[$i]['class']=='FirePHP'
+             && substr($this->_standardizePath($trace[$i+1]['file']),-18,18)=='FirePHPCore/fb.php') {
+            /* Skip fb() */
+          } else
+          if(isset($trace[$i]['file'])
+             && substr($this->_standardizePath($trace[$i]['file']),-18,18)=='FirePHPCore/fb.php') {
+            /* Skip FB::fb() */
+          } else {
+            $meta['file'] = isset($trace[$i]['file'])?$this->_escapeTraceFile($trace[$i]['file']):'';
+            $meta['line'] = isset($trace[$i]['line'])?$trace[$i]['line']:'';
+            break;
+          }
+        }      
+      
+      }
+    } else {
+      unset($meta['file']);
+      unset($meta['line']);
+    }
+
+  	$this->setHeader('X-Wf-Protocol-1','http://meta.wildfirehq.org/Protocol/JsonStream/0.2');
+  	$this->setHeader('X-Wf-1-Plugin-1','http://meta.firephp.org/Wildfire/Plugin/FirePHP/Library-FirePHPCore/'.self::VERSION);
+ 
+    $structure_index = 1;
+    if($Type==self::DUMP) {
+      $structure_index = 2;
+    	$this->setHeader('X-Wf-1-Structure-2','http://meta.firephp.org/Wildfire/Structure/FirePHP/Dump/0.1');
+    } else {
+    	$this->setHeader('X-Wf-1-Structure-1','http://meta.firephp.org/Wildfire/Structure/FirePHP/FirebugConsole/0.1');
+    }
+  
+    if($Type==self::DUMP) {
+    	$msg = '{"'.$Label.'":'.$this->jsonEncode($Object, $skipFinalObjectEncode).'}';
+    } else {
+      $msg_meta = array('Type'=>$Type);
+      if($Label!==null) {
+        $msg_meta['Label'] = $Label;
+      }
+      if(isset($meta['file'])) {
+        $msg_meta['File'] = $meta['file'];
+      }
+      if(isset($meta['line'])) {
+        $msg_meta['Line'] = $meta['line'];
+      }
+    	$msg = '['.$this->jsonEncode($msg_meta).','.$this->jsonEncode($Object, $skipFinalObjectEncode).']';
+    }
+    
+    $parts = explode("\n",chunk_split($msg, 5000, "\n"));
+
+    for( $i=0 ; $i<count($parts) ; $i++) {
+        
+        $part = $parts[$i];
+        if ($part) {
+            
+            if(count($parts)>2) {
+              // Message needs to be split into multiple parts
+              $this->setHeader('X-Wf-1-'.$structure_index.'-'.'1-'.$this->messageIndex,
+                               (($i==0)?strlen($msg):'')
+                               . '|' . $part . '|'
+                               . (($i<count($parts)-2)?'\\':''));
+            } else {
+              $this->setHeader('X-Wf-1-'.$structure_index.'-'.'1-'.$this->messageIndex,
+                               strlen($part) . '|' . $part . '|');
+            }
+            
+            $this->messageIndex++;
+            
+            if ($this->messageIndex > 99999) {
+                throw new Exception('Maximum number (99,999) of messages reached!');             
+            }
+        }
+    }
+
+  	$this->setHeader('X-Wf-1-Index',$this->messageIndex-1);
+
+    return true;
+  }
+  
+  /**
+   * Standardizes path for windows systems.
+   *
+   * @param string $Path
+   * @return string
+   */
+  protected function _standardizePath($Path) {
+    return preg_replace('/\\\\+/','/',$Path);    
+  }
+  
+  /**
+   * Escape trace path for windows systems
+   *
+   * @param array $Trace
+   * @return array
+   */
+  protected function _escapeTrace($Trace) {
+    if(!$Trace) return $Trace;
+    for( $i=0 ; $i<sizeof($Trace) ; $i++ ) {
+      if(isset($Trace[$i]['file'])) {
+        $Trace[$i]['file'] = $this->_escapeTraceFile($Trace[$i]['file']);
+      }
+      if(isset($Trace[$i]['args'])) {
+        $Trace[$i]['args'] = $this->encodeObject($Trace[$i]['args']);
+      }
+    }
+    return $Trace;    
+  }
+  
+  /**
+   * Escape file information of trace for windows systems
+   *
+   * @param string $File
+   * @return string
+   */
+  protected function _escapeTraceFile($File) {
+    /* Check if we have a windows filepath */
+    if(strpos($File,'\\')) {
+      /* First strip down to single \ */
+      
+      $file = preg_replace('/\\\\+/','\\',$File);
+      
+      return $file;
+    }
+    return $File;
+  }
+
+  /**
+   * Send header
+   *
+   * @param string $Name
+   * @param string_type $Value
+   */
+  protected function setHeader($Name, $Value) {
+    return header($Name.': '.$Value);
+  }
+
+  /**
+   * Get user agent
+   *
+   * @return string|false
+   */
+  protected function getUserAgent() {
+    if(!isset($_SERVER['HTTP_USER_AGENT'])) return false;
+    return $_SERVER['HTTP_USER_AGENT'];
+  }
+
+  /**
+   * Returns a new exception
+   *
+   * @param string $Message
+   * @return Exception
+   */
+  protected function newException($Message) {
+    return new Exception($Message);
+  }
+  
+  /**
+   * Encode an object into a JSON string
+   * 
+   * Uses PHP's jeson_encode() if available
+   * 
+   * @param object $Object The object to be encoded
+   * @return string The JSON string
+   */
+  protected function jsonEncode($Object, $skipObjectEncode=false)
+  {
+    if(!$skipObjectEncode) {
+      $Object = $this->encodeObject($Object);
+    }
+    
+    if(function_exists('json_encode')
+       && $this->options['useNativeJsonEncode']!=false) {
+
+      return json_encode($Object);
+    } else {
+      return $this->json_encode($Object);
+    }
+  }
+  
+  /**
+   * Encodes a table by encoding each row and column with encodeObject()
+   * 
+   * @param array $Table The table to be encoded
+   * @return array
+   */  
+  protected function encodeTable($Table) {
+    if(!$Table) return $Table;
+    for( $i=0 ; $i<count($Table) ; $i++ ) {
+      if(is_array($Table[$i])) {
+        for( $j=0 ; $j<count($Table[$i]) ; $j++ ) {
+          $Table[$i][$j] = $this->encodeObject($Table[$i][$j]);
+        }
+      }
+    }
+    return $Table;
+  }
+  
+  /**
+   * Encodes an object including members with
+   * protected and private visibility
+   * 
+   * @param Object $Object The object to be encoded
+   * @param int $Depth The current traversal depth
+   * @return array All members of the object
+   */
+  protected function encodeObject($Object, $ObjectDepth = 1, $ArrayDepth = 1)
+  {
+    $return = array();
+    
+    if (is_object($Object)) {
+
+        if ($ObjectDepth > $this->options['maxObjectDepth']) {
+          return '** Max Object Depth ('.$this->options['maxObjectDepth'].') **';
+        }
+        
+        foreach ($this->objectStack as $refVal) {
+            if ($refVal === $Object) {
+                return '** Recursion ('.get_class($Object).') **';
+            }
+        }
+        array_push($this->objectStack, $Object);
+                
+        $return['__className'] = $class = get_class($Object);
+
+        $reflectionClass = new ReflectionClass($class);  
+        $properties = array();
+        foreach( $reflectionClass->getProperties() as $property) {
+          $properties[$property->getName()] = $property;
+        }
+            
+        $members = (array)$Object;
+            
+        foreach( $properties as $raw_name => $property ) {
+          
+          $name = $raw_name;
+          if($property->isStatic()) {
+            $name = 'static:'.$name;
+          }
+          if($property->isPublic()) {
+            $name = 'public:'.$name;
+          } else
+          if($property->isPrivate()) {
+            $name = 'private:'.$name;
+            $raw_name = "\0".$class."\0".$raw_name;
+          } else
+          if($property->isProtected()) {
+            $name = 'protected:'.$name;
+            $raw_name = "\0".'*'."\0".$raw_name;
+          }
+          
+          if(!(isset($this->objectFilters[$class])
+               && is_array($this->objectFilters[$class])
+               && in_array($raw_name,$this->objectFilters[$class]))) {
+
+            if(array_key_exists($raw_name,$members)
+               && !$property->isStatic()) {
+              
+              $return[$name] = $this->encodeObject($members[$raw_name], $ObjectDepth + 1, 1);      
+            
+            } else {
+              if(method_exists($property,'setAccessible')) {
+                $property->setAccessible(true);
+                $return[$name] = $this->encodeObject($property->getValue($Object), $ObjectDepth + 1, 1);
+              } else
+              if($property->isPublic()) {
+                $return[$name] = $this->encodeObject($property->getValue($Object), $ObjectDepth + 1, 1);
+              } else {
+                $return[$name] = '** Need PHP 5.3 to get value **';
+              }
+            }
+          } else {
+            $return[$name] = '** Excluded by Filter **';
+          }
+        }
+        
+        // Include all members that are not defined in the class
+        // but exist in the object
+        foreach( $members as $raw_name => $value ) {
+          
+          $name = $raw_name;
+          
+          if ($name{0} == "\0") {
+            $parts = explode("\0", $name);
+            $name = $parts[2];
+          }
+          
+          if(!isset($properties[$name])) {
+            $name = 'undeclared:'.$name;
+              
+            if(!(isset($this->objectFilters[$class])
+                 && is_array($this->objectFilters[$class])
+                 && in_array($raw_name,$this->objectFilters[$class]))) {
+              
+              $return[$name] = $this->encodeObject($value, $ObjectDepth + 1, 1);
+            } else {
+              $return[$name] = '** Excluded by Filter **';
+            }
+          }
+        }
+        
+        array_pop($this->objectStack);
+        
+    } elseif (is_array($Object)) {
+
+        if ($ArrayDepth > $this->options['maxArrayDepth']) {
+          return '** Max Array Depth ('.$this->options['maxArrayDepth'].') **';
+        }
+      
+        foreach ($Object as $key => $val) {
+          
+          // Encoding the $GLOBALS PHP array causes an infinite loop
+          // if the recursion is not reset here as it contains
+          // a reference to itself. This is the only way I have come up
+          // with to stop infinite recursion in this case.
+          if($key=='GLOBALS'
+             && is_array($val)
+             && array_key_exists('GLOBALS',$val)) {
+            $val['GLOBALS'] = '** Recursion (GLOBALS) **';
+          }
+          
+          $return[$key] = $this->encodeObject($val, 1, $ArrayDepth + 1);
+        }
+    } else {
+      if(self::is_utf8($Object)) {
+        return $Object;
+      } else {
+        return utf8_encode($Object);
+      }
+    }
+    return $return;
+  }
+
+  /**
+   * Returns true if $string is valid UTF-8 and false otherwise.
+   *
+   * @param mixed $str String to be tested
+   * @return boolean
+   */
+  protected static function is_utf8($str) {
+    $c=0; $b=0;
+    $bits=0;
+    $len=strlen($str);
+    for($i=0; $i<$len; $i++){
+        $c=ord($str[$i]);
+        if($c > 128){
+            if(($c >= 254)) return false;
+            elseif($c >= 252) $bits=6;
+            elseif($c >= 248) $bits=5;
+            elseif($c >= 240) $bits=4;
+            elseif($c >= 224) $bits=3;
+            elseif($c >= 192) $bits=2;
+            else return false;
+            if(($i+$bits) > $len) return false;
+            while($bits > 1){
+                $i++;
+                $b=ord($str[$i]);
+                if($b < 128 || $b > 191) return false;
+                $bits--;
+            }
+        }
+    }
+    return true;
+  } 
+
+  /**
+   * Converts to and from JSON format.
+   *
+   * JSON (JavaScript Object Notation) is a lightweight data-interchange
+   * format. It is easy for humans to read and write. It is easy for machines
+   * to parse and generate. It is based on a subset of the JavaScript
+   * Programming Language, Standard ECMA-262 3rd Edition - December 1999.
+   * This feature can also be found in  Python. JSON is a text format that is
+   * completely language independent but uses conventions that are familiar
+   * to programmers of the C-family of languages, including C, C++, C#, Java,
+   * JavaScript, Perl, TCL, and many others. These properties make JSON an
+   * ideal data-interchange language.
+   *
+   * This package provides a simple encoder and decoder for JSON notation. It
+   * is intended for use with client-side Javascript applications that make
+   * use of HTTPRequest to perform server communication functions - data can
+   * be encoded into JSON notation for use in a client-side javascript, or
+   * decoded from incoming Javascript requests. JSON format is native to
+   * Javascript, and can be directly eval()'ed with no further parsing
+   * overhead
+   *
+   * All strings should be in ASCII or UTF-8 format!
+   *
+   * LICENSE: Redistribution and use in source and binary forms, with or
+   * without modification, are permitted provided that the following
+   * conditions are met: Redistributions of source code must retain the
+   * above copyright notice, this list of conditions and the following
+   * disclaimer. Redistributions in binary form must reproduce the above
+   * copyright notice, this list of conditions and the following disclaimer
+   * in the documentation and/or other materials provided with the
+   * distribution.
+   *
+   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+   * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+   * NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+   * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+   * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+   * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+   * DAMAGE.
+   *
+   * @category
+   * @package     Services_JSON
+   * @author      Michal Migurski <mike-json@teczno.com>
+   * @author      Matt Knapp <mdknapp[at]gmail[dot]com>
+   * @author      Brett Stimmerman <brettstimmerman[at]gmail[dot]com>
+   * @author      Christoph Dorn <christoph@christophdorn.com>
+   * @copyright   2005 Michal Migurski
+   * @version     CVS: $Id: JSON.php,v 1.31 2006/06/28 05:54:17 migurski Exp $
+   * @license     http://www.opensource.org/licenses/bsd-license.php
+   * @link        http://pear.php.net/pepr/pepr-proposal-show.php?id=198
+   */
+   
+     
+  /**
+   * Keep a list of objects as we descend into the array so we can detect recursion.
+   */
+  private $json_objectStack = array();
+
+
+ /**
+  * convert a string from one UTF-8 char to one UTF-16 char
+  *
+  * Normally should be handled by mb_convert_encoding, but
+  * provides a slower PHP-only method for installations
+  * that lack the multibye string extension.
+  *
+  * @param    string  $utf8   UTF-8 character
+  * @return   string  UTF-16 character
+  * @access   private
+  */
+  private function json_utf82utf16($utf8)
+  {
+      // oh please oh please oh please oh please oh please
+      if(function_exists('mb_convert_encoding')) {
+          return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
+      }
+
+      switch(strlen($utf8)) {
+          case 1:
+              // this case should never be reached, because we are in ASCII range
+              // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+              return $utf8;
+
+          case 2:
+              // return a UTF-16 character from a 2-byte UTF-8 char
+              // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+              return chr(0x07 & (ord($utf8{0}) >> 2))
+                   . chr((0xC0 & (ord($utf8{0}) << 6))
+                       | (0x3F & ord($utf8{1})));
+
+          case 3:
+              // return a UTF-16 character from a 3-byte UTF-8 char
+              // see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+              return chr((0xF0 & (ord($utf8{0}) << 4))
+                       | (0x0F & (ord($utf8{1}) >> 2)))
+                   . chr((0xC0 & (ord($utf8{1}) << 6))
+                       | (0x7F & ord($utf8{2})));
+      }
+
+      // ignoring UTF-32 for now, sorry
+      return '';
+  }
+
+ /**
+  * encodes an arbitrary variable into JSON format
+  *
+  * @param    mixed   $var    any number, boolean, string, array, or object to be encoded.
+  *                           see argument 1 to Services_JSON() above for array-parsing behavior.
+  *                           if var is a strng, note that encode() always expects it
+  *                           to be in ASCII or UTF-8 format!
+  *
+  * @return   mixed   JSON string representation of input var or an error if a problem occurs
+  * @access   public
+  */
+  private function json_encode($var)
+  {
+    
+    if(is_object($var)) {
+      if(in_array($var,$this->json_objectStack)) {
+        return '"** Recursion **"';
+      }
+    }
+          
+      switch (gettype($var)) {
+          case 'boolean':
+              return $var ? 'true' : 'false';
+
+          case 'NULL':
+              return 'null';
+
+          case 'integer':
+              return (int) $var;
+
+          case 'double':
+          case 'float':
+              return (float) $var;
+
+          case 'string':
+              // STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT
+              $ascii = '';
+              $strlen_var = strlen($var);
+
+             /*
+              * Iterate over every character in the string,
+              * escaping with a slash or encoding to UTF-8 where necessary
+              */
+              for ($c = 0; $c < $strlen_var; ++$c) {
+
+                  $ord_var_c = ord($var{$c});
+
+                  switch (true) {
+                      case $ord_var_c == 0x08:
+                          $ascii .= '\b';
+                          break;
+                      case $ord_var_c == 0x09:
+                          $ascii .= '\t';
+                          break;
+                      case $ord_var_c == 0x0A:
+                          $ascii .= '\n';
+                          break;
+                      case $ord_var_c == 0x0C:
+                          $ascii .= '\f';
+                          break;
+                      case $ord_var_c == 0x0D:
+                          $ascii .= '\r';
+                          break;
+
+                      case $ord_var_c == 0x22:
+                      case $ord_var_c == 0x2F:
+                      case $ord_var_c == 0x5C:
+                          // double quote, slash, slosh
+                          $ascii .= '\\'.$var{$c};
+                          break;
+
+                      case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
+                          // characters U-00000000 - U-0000007F (same as ASCII)
+                          $ascii .= $var{$c};
+                          break;
+
+                      case (($ord_var_c & 0xE0) == 0xC0):
+                          // characters U-00000080 - U-000007FF, mask 110XXXXX
+                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+                          $char = pack('C*', $ord_var_c, ord($var{$c + 1}));
+                          $c += 1;
+                          $utf16 = $this->json_utf82utf16($char);
+                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
+                          break;
+
+                      case (($ord_var_c & 0xF0) == 0xE0):
+                          // characters U-00000800 - U-0000FFFF, mask 1110XXXX
+                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+                          $char = pack('C*', $ord_var_c,
+                                       ord($var{$c + 1}),
+                                       ord($var{$c + 2}));
+                          $c += 2;
+                          $utf16 = $this->json_utf82utf16($char);
+                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
+                          break;
+
+                      case (($ord_var_c & 0xF8) == 0xF0):
+                          // characters U-00010000 - U-001FFFFF, mask 11110XXX
+                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+                          $char = pack('C*', $ord_var_c,
+                                       ord($var{$c + 1}),
+                                       ord($var{$c + 2}),
+                                       ord($var{$c + 3}));
+                          $c += 3;
+                          $utf16 = $this->json_utf82utf16($char);
+                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
+                          break;
+
+                      case (($ord_var_c & 0xFC) == 0xF8):
+                          // characters U-00200000 - U-03FFFFFF, mask 111110XX
+                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+                          $char = pack('C*', $ord_var_c,
+                                       ord($var{$c + 1}),
+                                       ord($var{$c + 2}),
+                                       ord($var{$c + 3}),
+                                       ord($var{$c + 4}));
+                          $c += 4;
+                          $utf16 = $this->json_utf82utf16($char);
+                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
+                          break;
+
+                      case (($ord_var_c & 0xFE) == 0xFC):
+                          // characters U-04000000 - U-7FFFFFFF, mask 1111110X
+                          // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
+                          $char = pack('C*', $ord_var_c,
+                                       ord($var{$c + 1}),
+                                       ord($var{$c + 2}),
+                                       ord($var{$c + 3}),
+                                       ord($var{$c + 4}),
+                                       ord($var{$c + 5}));
+                          $c += 5;
+                          $utf16 = $this->json_utf82utf16($char);
+                          $ascii .= sprintf('\u%04s', bin2hex($utf16));
+                          break;
+                  }
+              }
+
+              return '"'.$ascii.'"';
+
+          case 'array':
+             /*
+              * As per JSON spec if any array key is not an integer
+              * we must treat the the whole array as an object. We
+              * also try to catch a sparsely populated associative
+              * array with numeric keys here because some JS engines
+              * will create an array with empty indexes up to
+              * max_index which can cause memory issues and because
+              * the keys, which may be relevant, will be remapped
+              * otherwise.
+              *
+              * As per the ECMA and JSON specification an object may
+              * have any string as a property. Unfortunately due to
+              * a hole in the ECMA specification if the key is a
+              * ECMA reserved word or starts with a digit the
+              * parameter is only accessible using ECMAScript's
+              * bracket notation.
+              */
+
+              // treat as a JSON object
+              if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
+                  
+                  $this->json_objectStack[] = $var;
+
+                  $properties = array_map(array($this, 'json_name_value'),
+                                          array_keys($var),
+                                          array_values($var));
+
+                  array_pop($this->json_objectStack);
+
+                  foreach($properties as $property) {
+                      if($property instanceof Exception) {
+                          return $property;
+                      }
+                  }
+
+                  return '{' . join(',', $properties) . '}';
+              }
+
+              $this->json_objectStack[] = $var;
+
+              // treat it like a regular array
+              $elements = array_map(array($this, 'json_encode'), $var);
+
+              array_pop($this->json_objectStack);
+
+              foreach($elements as $element) {
+                  if($element instanceof Exception) {
+                      return $element;
+                  }
+              }
+
+              return '[' . join(',', $elements) . ']';
+
+          case 'object':
+              $vars = self::encodeObject($var);
+
+              $this->json_objectStack[] = $var;
+
+              $properties = array_map(array($this, 'json_name_value'),
+                                      array_keys($vars),
+                                      array_values($vars));
+
+              array_pop($this->json_objectStack);
+              
+              foreach($properties as $property) {
+                  if($property instanceof Exception) {
+                      return $property;
+                  }
+              }
+                     
+              return '{' . join(',', $properties) . '}';
+
+          default:
+              return null;
+      }
+  }
+
+ /**
+  * array-walking function for use in generating JSON-formatted name-value pairs
+  *
+  * @param    string  $name   name of key to use
+  * @param    mixed   $value  reference to an array element to be encoded
+  *
+  * @return   string  JSON-formatted name-value pair, like '"name":value'
+  * @access   private
+  */
+  private function json_name_value($name, $value)
+  {
+      // Encoding the $GLOBALS PHP array causes an infinite loop
+      // if the recursion is not reset here as it contains
+      // a reference to itself. This is the only way I have come up
+      // with to stop infinite recursion in this case.
+      if($name=='GLOBALS'
+         && is_array($value)
+         && array_key_exists('GLOBALS',$value)) {
+        $value['GLOBALS'] = '** Recursion **';
+      }
+    
+      $encoded_value = $this->json_encode($value);
+
+      if($encoded_value instanceof Exception) {
+          return $encoded_value;
+      }
+
+      return $this->json_encode(strval($name)) . ':' . $encoded_value;
+  }
+}
diff --git a/inc/lib/minify/HTTP/ConditionalGet.php b/inc/lib/minify/HTTP/ConditionalGet.php
new file mode 100755
index 00000000..93b7e75d
--- /dev/null
+++ b/inc/lib/minify/HTTP/ConditionalGet.php
@@ -0,0 +1,366 @@
+<?php
+/**
+ * Class HTTP_ConditionalGet  
+ * @package Minify
+ * @subpackage HTTP
+ */
+
+/**
+ * Implement conditional GET via a timestamp or hash of content
+ *
+ * E.g. Content from DB with update time:
+ * <code>
+ * list($updateTime, $content) = getDbUpdateAndContent();
+ * $cg = new HTTP_ConditionalGet(array(
+ *     'lastModifiedTime' => $updateTime
+ *     ,'isPublic' => true
+ * ));
+ * $cg->sendHeaders();
+ * if ($cg->cacheIsValid) {
+ *     exit();
+ * }
+ * echo $content;
+ * </code>
+ * 
+ * E.g. Shortcut for the above
+ * <code>
+ * HTTP_ConditionalGet::check($updateTime, true); // exits if client has cache
+ * echo $content;
+ * </code>
+ *
+ * E.g. Content from DB with no update time:
+ * <code>
+ * $content = getContentFromDB();
+ * $cg = new HTTP_ConditionalGet(array(
+ *     'contentHash' => md5($content)
+ * ));
+ * $cg->sendHeaders();
+ * if ($cg->cacheIsValid) {
+ *     exit();
+ * }
+ * echo $content;
+ * </code>
+ * 
+ * E.g. Static content with some static includes:
+ * <code>
+ * // before content
+ * $cg = new HTTP_ConditionalGet(array(
+ *     'lastUpdateTime' => max(
+ *         filemtime(__FILE__)
+ *         ,filemtime('/path/to/header.inc')
+ *         ,filemtime('/path/to/footer.inc')
+ *     )
+ * ));
+ * $cg->sendHeaders();
+ * if ($cg->cacheIsValid) {
+ *     exit();
+ * }
+ * </code>
+ * @package Minify
+ * @subpackage HTTP
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class HTTP_ConditionalGet {
+
+    /**
+     * Does the client have a valid copy of the requested resource?
+     * 
+     * You'll want to check this after instantiating the object. If true, do
+     * not send content, just call sendHeaders() if you haven't already.
+     *
+     * @var bool
+     */
+    public $cacheIsValid = null;
+
+    /**
+     * @param array $spec options
+     * 
+     * 'isPublic': (bool) if false, the Cache-Control header will contain
+     * "private", allowing only browser caching. (default false)
+     * 
+     * 'lastModifiedTime': (int) if given, both ETag AND Last-Modified headers
+     * will be sent with content. This is recommended.
+     *
+     * 'encoding': (string) if set, the header "Vary: Accept-Encoding" will
+     * always be sent and a truncated version of the encoding will be appended
+     * to the ETag. E.g. "pub123456;gz". This will also trigger a more lenient 
+     * checking of the client's If-None-Match header, as the encoding portion of
+     * the ETag will be stripped before comparison.
+     * 
+     * 'contentHash': (string) if given, only the ETag header can be sent with
+     * content (only HTTP1.1 clients can conditionally GET). The given string 
+     * should be short with no quote characters and always change when the 
+     * resource changes (recommend md5()). This is not needed/used if 
+     * lastModifiedTime is given.
+     * 
+     * 'eTag': (string) if given, this will be used as the ETag header rather
+     * than values based on lastModifiedTime or contentHash. Also the encoding
+     * string will not be appended to the given value as described above.
+     * 
+     * 'invalidate': (bool) if true, the client cache will be considered invalid
+     * without testing. Effectively this disables conditional GET. 
+     * (default false)
+     * 
+     * 'maxAge': (int) if given, this will set the Cache-Control max-age in 
+     * seconds, and also set the Expires header to the equivalent GMT date. 
+     * After the max-age period has passed, the browser will again send a 
+     * conditional GET to revalidate its cache.
+     */
+    public function __construct($spec)
+    {
+        $scope = (isset($spec['isPublic']) && $spec['isPublic'])
+            ? 'public'
+            : 'private';
+        $maxAge = 0;
+        // backwards compatibility (can be removed later)
+        if (isset($spec['setExpires']) 
+            && is_numeric($spec['setExpires'])
+            && ! isset($spec['maxAge'])) {
+            $spec['maxAge'] = $spec['setExpires'] - $_SERVER['REQUEST_TIME'];
+        }
+        if (isset($spec['maxAge'])) {
+            $maxAge = $spec['maxAge'];
+            $this->_headers['Expires'] = self::gmtDate(
+                $_SERVER['REQUEST_TIME'] + $spec['maxAge'] 
+            );
+        }
+        $etagAppend = '';
+        if (isset($spec['encoding'])) {
+            $this->_stripEtag = true;
+            $this->_headers['Vary'] = 'Accept-Encoding';
+            if ('' !== $spec['encoding']) {
+                if (0 === strpos($spec['encoding'], 'x-')) {
+                    $spec['encoding'] = substr($spec['encoding'], 2);
+                }
+                $etagAppend = ';' . substr($spec['encoding'], 0, 2);
+            }
+        }
+        if (isset($spec['lastModifiedTime'])) {
+            $this->_setLastModified($spec['lastModifiedTime']);
+            if (isset($spec['eTag'])) { // Use it
+                $this->_setEtag($spec['eTag'], $scope);
+            } else { // base both headers on time
+                $this->_setEtag($spec['lastModifiedTime'] . $etagAppend, $scope);
+            }
+        } elseif (isset($spec['eTag'])) { // Use it
+            $this->_setEtag($spec['eTag'], $scope);
+        } elseif (isset($spec['contentHash'])) { // Use the hash as the ETag
+            $this->_setEtag($spec['contentHash'] . $etagAppend, $scope);
+        }
+        $privacy = ($scope === 'private')
+            ? ', private'
+            : '';
+        $this->_headers['Cache-Control'] = "max-age={$maxAge}{$privacy}";
+        // invalidate cache if disabled, otherwise check
+        $this->cacheIsValid = (isset($spec['invalidate']) && $spec['invalidate'])
+            ? false
+            : $this->_isCacheValid();
+    }
+    
+    /**
+     * Get array of output headers to be sent
+     * 
+     * In the case of 304 responses, this array will only contain the response
+     * code header: array('_responseCode' => 'HTTP/1.0 304 Not Modified')
+     * 
+     * Otherwise something like: 
+     * <code>
+     * array(
+     *     'Cache-Control' => 'max-age=0, public'
+     *     ,'ETag' => '"foobar"'
+     * )
+     * </code>
+     *
+     * @return array 
+     */
+    public function getHeaders()
+    {
+        return $this->_headers;
+    }
+
+    /**
+     * Set the Content-Length header in bytes
+     * 
+     * With most PHP configs, as long as you don't flush() output, this method
+     * is not needed and PHP will buffer all output and set Content-Length for 
+     * you. Otherwise you'll want to call this to let the client know up front.
+     * 
+     * @param int $bytes
+     * 
+     * @return int copy of input $bytes
+     */
+    public function setContentLength($bytes)
+    {
+        return $this->_headers['Content-Length'] = $bytes;
+    }
+
+    /**
+     * Send headers
+     * 
+     * @see getHeaders()
+     * 
+     * Note this doesn't "clear" the headers. Calling sendHeaders() will
+     * call header() again (but probably have not effect) and getHeaders() will
+     * still return the headers.
+     *
+     * @return null
+     */
+    public function sendHeaders()
+    {
+        $headers = $this->_headers;
+        if (array_key_exists('_responseCode', $headers)) {
+            // FastCGI environments require 3rd arg to header() to be set
+            list(, $code) = explode(' ', $headers['_responseCode'], 3);
+            header($headers['_responseCode'], true, $code);
+            unset($headers['_responseCode']);
+        }
+        foreach ($headers as $name => $val) {
+            header($name . ': ' . $val);
+        }
+    }
+    
+    /**
+     * Exit if the client's cache is valid for this resource
+     *
+     * This is a convenience method for common use of the class
+     *
+     * @param int $lastModifiedTime if given, both ETag AND Last-Modified headers
+     * will be sent with content. This is recommended.
+     *
+     * @param bool $isPublic (default false) if true, the Cache-Control header 
+     * will contain "public", allowing proxies to cache the content. Otherwise 
+     * "private" will be sent, allowing only browser caching.
+     *
+     * @param array $options (default empty) additional options for constructor
+     */
+    public static function check($lastModifiedTime = null, $isPublic = false, $options = array())
+    {
+        if (null !== $lastModifiedTime) {
+            $options['lastModifiedTime'] = (int)$lastModifiedTime;
+        }
+        $options['isPublic'] = (bool)$isPublic;
+        $cg = new HTTP_ConditionalGet($options);
+        $cg->sendHeaders();
+        if ($cg->cacheIsValid) {
+            exit();
+        }
+    }
+    
+    
+    /**
+     * Get a GMT formatted date for use in HTTP headers
+     * 
+     * <code>
+     * header('Expires: ' . HTTP_ConditionalGet::gmtdate($time));
+     * </code>  
+     *
+     * @param int $time unix timestamp
+     * 
+     * @return string
+     */
+    public static function gmtDate($time)
+    {
+        return gmdate('D, d M Y H:i:s \G\M\T', $time);
+    }
+    
+    protected $_headers = array();
+    protected $_lmTime = null;
+    protected $_etag = null;
+    protected $_stripEtag = false;
+
+    /**
+     * @param string $hash
+     *
+     * @param string $scope
+     */
+    protected function _setEtag($hash, $scope)
+    {
+        $this->_etag = '"' . substr($scope, 0, 3) . $hash . '"';
+        $this->_headers['ETag'] = $this->_etag;
+    }
+
+    /**
+     * @param int $time
+     */
+    protected function _setLastModified($time)
+    {
+        $this->_lmTime = (int)$time;
+        $this->_headers['Last-Modified'] = self::gmtDate($time);
+    }
+
+    /**
+     * Determine validity of client cache and queue 304 header if valid
+     *
+     * @return bool
+     */
+    protected function _isCacheValid()
+    {
+        if (null === $this->_etag) {
+            // lmTime is copied to ETag, so this condition implies that the
+            // server sent neither ETag nor Last-Modified, so the client can't 
+            // possibly has a valid cache.
+            return false;
+        }
+        $isValid = ($this->resourceMatchedEtag() || $this->resourceNotModified());
+        if ($isValid) {
+            $this->_headers['_responseCode'] = 'HTTP/1.0 304 Not Modified';
+        }
+        return $isValid;
+    }
+
+    /**
+     * @return bool
+     */
+    protected function resourceMatchedEtag()
+    {
+        if (!isset($_SERVER['HTTP_IF_NONE_MATCH'])) {
+            return false;
+        }
+        $clientEtagList = get_magic_quotes_gpc()
+            ? stripslashes($_SERVER['HTTP_IF_NONE_MATCH'])
+            : $_SERVER['HTTP_IF_NONE_MATCH'];
+        $clientEtags = explode(',', $clientEtagList);
+        
+        $compareTo = $this->normalizeEtag($this->_etag);
+        foreach ($clientEtags as $clientEtag) {
+            if ($this->normalizeEtag($clientEtag) === $compareTo) {
+                // respond with the client's matched ETag, even if it's not what
+                // we would've sent by default
+                $this->_headers['ETag'] = trim($clientEtag);
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * @param string $etag
+     *
+     * @return string
+     */
+    protected function normalizeEtag($etag) {
+        $etag = trim($etag);
+        return $this->_stripEtag
+            ? preg_replace('/;\\w\\w"$/', '"', $etag)
+            : $etag;
+    }
+
+    /**
+     * @return bool
+     */
+    protected function resourceNotModified()
+    {
+        if (!isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
+            return false;
+        }
+        // strip off IE's extra data (semicolon)
+        list($ifModifiedSince) = explode(';', $_SERVER['HTTP_IF_MODIFIED_SINCE'], 2);
+        if (strtotime($ifModifiedSince) >= $this->_lmTime) {
+            // Apache 2.2's behavior. If there was no ETag match, send the 
+            // non-encoded version of the ETag value.
+            $this->_headers['ETag'] = $this->normalizeEtag($this->_etag);
+            return true;
+        }
+        return false;
+    }
+}
diff --git a/inc/lib/minify/HTTP/Encoder.php b/inc/lib/minify/HTTP/Encoder.php
new file mode 100755
index 00000000..8f347793
--- /dev/null
+++ b/inc/lib/minify/HTTP/Encoder.php
@@ -0,0 +1,335 @@
+<?php
+/**
+ * Class HTTP_Encoder  
+ * @package Minify
+ * @subpackage HTTP
+ */
+ 
+/**
+ * Encode and send gzipped/deflated content
+ *
+ * The "Vary: Accept-Encoding" header is sent. If the client allows encoding, 
+ * Content-Encoding and Content-Length are added.
+ *
+ * <code>
+ * // Send a CSS file, compressed if possible
+ * $he = new HTTP_Encoder(array(
+ *     'content' => file_get_contents($cssFile)
+ *     ,'type' => 'text/css'
+ * ));
+ * $he->encode();
+ * $he->sendAll();
+ * </code>
+ *
+ * <code>
+ * // Shortcut to encoding output
+ * header('Content-Type: text/css'); // needed if not HTML
+ * HTTP_Encoder::output($css);
+ * </code>
+ * 
+ * <code>
+ * // Just sniff for the accepted encoding
+ * $encoding = HTTP_Encoder::getAcceptedEncoding();
+ * </code>
+ *
+ * For more control over headers, use getHeaders() and getData() and send your
+ * own output.
+ * 
+ * Note: If you don't need header mgmt, use PHP's native gzencode, gzdeflate, 
+ * and gzcompress functions for gzip, deflate, and compress-encoding
+ * respectively.
+ * 
+ * @package Minify
+ * @subpackage HTTP
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class HTTP_Encoder {
+
+    /**
+     * Should the encoder allow HTTP encoding to IE6? 
+     * 
+     * If you have many IE6 users and the bandwidth savings is worth troubling 
+     * some of them, set this to true.
+     * 
+     * By default, encoding is only offered to IE7+. When this is true,
+     * getAcceptedEncoding() will return an encoding for IE6 if its user agent
+     * string contains "SV1". This has been documented in many places as "safe",
+     * but there seem to be remaining, intermittent encoding bugs in patched 
+     * IE6 on the wild web.
+     * 
+     * @var bool
+     */
+    public static $encodeToIe6 = true;
+    
+    
+    /**
+     * Default compression level for zlib operations
+     * 
+     * This level is used if encode() is not given a $compressionLevel
+     * 
+     * @var int
+     */
+    public static $compressionLevel = 6;
+    
+
+    /**
+     * Get an HTTP Encoder object
+     * 
+     * @param array $spec options
+     * 
+     * 'content': (string required) content to be encoded
+     * 
+     * 'type': (string) if set, the Content-Type header will have this value.
+     * 
+     * 'method: (string) only set this if you are forcing a particular encoding
+     * method. If not set, the best method will be chosen by getAcceptedEncoding()
+     * The available methods are 'gzip', 'deflate', 'compress', and '' (no
+     * encoding)
+     */
+    public function __construct($spec) 
+    {
+        $this->_useMbStrlen = (function_exists('mb_strlen')
+                               && (ini_get('mbstring.func_overload') !== '')
+                               && ((int)ini_get('mbstring.func_overload') & 2));
+        $this->_content = $spec['content'];
+        $this->_headers['Content-Length'] = $this->_useMbStrlen
+            ? (string)mb_strlen($this->_content, '8bit')
+            : (string)strlen($this->_content);
+        if (isset($spec['type'])) {
+            $this->_headers['Content-Type'] = $spec['type'];
+        }
+        if (isset($spec['method'])
+            && in_array($spec['method'], array('gzip', 'deflate', 'compress', '')))
+        {
+            $this->_encodeMethod = array($spec['method'], $spec['method']);
+        } else {
+            $this->_encodeMethod = self::getAcceptedEncoding();
+        }
+    }
+
+    /**
+     * Get content in current form
+     * 
+     * Call after encode() for encoded content.
+     * 
+     * @return string
+     */
+    public function getContent() 
+    {
+        return $this->_content;
+    }
+    
+    /**
+     * Get array of output headers to be sent
+     * 
+     * E.g.
+     * <code>
+     * array(
+     *     'Content-Length' => '615'
+     *     ,'Content-Encoding' => 'x-gzip'
+     *     ,'Vary' => 'Accept-Encoding'
+     * )
+     * </code>
+     *
+     * @return array 
+     */
+    public function getHeaders()
+    {
+        return $this->_headers;
+    }
+
+    /**
+     * Send output headers
+     * 
+     * You must call this before headers are sent and it probably cannot be
+     * used in conjunction with zlib output buffering / mod_gzip. Errors are
+     * not handled purposefully.
+     * 
+     * @see getHeaders()
+     */
+    public function sendHeaders()
+    {
+        foreach ($this->_headers as $name => $val) {
+            header($name . ': ' . $val);
+        }
+    }
+    
+    /**
+     * Send output headers and content
+     * 
+     * A shortcut for sendHeaders() and echo getContent()
+     *
+     * You must call this before headers are sent and it probably cannot be
+     * used in conjunction with zlib output buffering / mod_gzip. Errors are
+     * not handled purposefully.
+     */
+    public function sendAll()
+    {
+        $this->sendHeaders();
+        echo $this->_content;
+    }
+
+    /**
+     * Determine the client's best encoding method from the HTTP Accept-Encoding 
+     * header.
+     * 
+     * If no Accept-Encoding header is set, or the browser is IE before v6 SP2,
+     * this will return ('', ''), the "identity" encoding.
+     * 
+     * A syntax-aware scan is done of the Accept-Encoding, so the method must
+     * be non 0. The methods are favored in order of gzip, deflate, then 
+     * compress. Deflate is always smallest and generally faster, but is 
+     * rarely sent by servers, so client support could be buggier.
+     * 
+     * @param bool $allowCompress allow the older compress encoding
+     * 
+     * @param bool $allowDeflate allow the more recent deflate encoding
+     * 
+     * @return array two values, 1st is the actual encoding method, 2nd is the
+     * alias of that method to use in the Content-Encoding header (some browsers
+     * call gzip "x-gzip" etc.)
+     */
+    public static function getAcceptedEncoding($allowCompress = true, $allowDeflate = true)
+    {
+        // @link http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
+        
+        if (! isset($_SERVER['HTTP_ACCEPT_ENCODING'])
+            || self::isBuggyIe())
+        {
+            return array('', '');
+        }
+        $ae = $_SERVER['HTTP_ACCEPT_ENCODING'];
+        // gzip checks (quick)
+        if (0 === strpos($ae, 'gzip,')             // most browsers
+            || 0 === strpos($ae, 'deflate, gzip,') // opera
+        ) {
+            return array('gzip', 'gzip');
+        }
+        // gzip checks (slow)
+        if (preg_match(
+                '@(?:^|,)\\s*((?:x-)?gzip)\\s*(?:$|,|;\\s*q=(?:0\\.|1))@'
+                ,$ae
+                ,$m)) {
+            return array('gzip', $m[1]);
+        }
+        if ($allowDeflate) {
+            // deflate checks    
+            $aeRev = strrev($ae);
+            if (0 === strpos($aeRev, 'etalfed ,') // ie, webkit
+                || 0 === strpos($aeRev, 'etalfed,') // gecko
+                || 0 === strpos($ae, 'deflate,') // opera
+                // slow parsing
+                || preg_match(
+                    '@(?:^|,)\\s*deflate\\s*(?:$|,|;\\s*q=(?:0\\.|1))@', $ae)) {
+                return array('deflate', 'deflate');
+            }
+        }
+        if ($allowCompress && preg_match(
+                '@(?:^|,)\\s*((?:x-)?compress)\\s*(?:$|,|;\\s*q=(?:0\\.|1))@'
+                ,$ae
+                ,$m)) {
+            return array('compress', $m[1]);
+        }
+        return array('', '');
+    }
+
+    /**
+     * Encode (compress) the content
+     * 
+     * If the encode method is '' (none) or compression level is 0, or the 'zlib'
+     * extension isn't loaded, we return false.
+     * 
+     * Then the appropriate gz_* function is called to compress the content. If
+     * this fails, false is returned.
+     * 
+     * The header "Vary: Accept-Encoding" is added. If encoding is successful, 
+     * the Content-Length header is updated, and Content-Encoding is also added.
+     * 
+     * @param int $compressionLevel given to zlib functions. If not given, the
+     * class default will be used.
+     * 
+     * @return bool success true if the content was actually compressed
+     */
+    public function encode($compressionLevel = null)
+    {
+        if (! self::isBuggyIe()) {
+            $this->_headers['Vary'] = 'Accept-Encoding';
+        }
+        if (null === $compressionLevel) {
+            $compressionLevel = self::$compressionLevel;
+        }
+        if ('' === $this->_encodeMethod[0]
+            || ($compressionLevel == 0)
+            || !extension_loaded('zlib'))
+        {
+            return false;
+        }
+        if ($this->_encodeMethod[0] === 'deflate') {
+            $encoded = gzdeflate($this->_content, $compressionLevel);
+        } elseif ($this->_encodeMethod[0] === 'gzip') {
+            $encoded = gzencode($this->_content, $compressionLevel);
+        } else {
+            $encoded = gzcompress($this->_content, $compressionLevel);
+        }
+        if (false === $encoded) {
+            return false;
+        }
+        $this->_headers['Content-Length'] = $this->_useMbStrlen
+            ? (string)mb_strlen($encoded, '8bit')
+            : (string)strlen($encoded);
+        $this->_headers['Content-Encoding'] = $this->_encodeMethod[1];
+        $this->_content = $encoded;
+        return true;
+    }
+    
+    /**
+     * Encode and send appropriate headers and content
+     *
+     * This is a convenience method for common use of the class
+     * 
+     * @param string $content
+     * 
+     * @param int $compressionLevel given to zlib functions. If not given, the
+     * class default will be used.
+     * 
+     * @return bool success true if the content was actually compressed
+     */
+    public static function output($content, $compressionLevel = null)
+    {
+        if (null === $compressionLevel) {
+            $compressionLevel = self::$compressionLevel;
+        }
+        $he = new HTTP_Encoder(array('content' => $content));
+        $ret = $he->encode($compressionLevel);
+        $he->sendAll();
+        return $ret;
+    }
+
+    /**
+     * Is the browser an IE version earlier than 6 SP2?
+     *
+     * @return bool
+     */
+    public static function isBuggyIe()
+    {
+        if (empty($_SERVER['HTTP_USER_AGENT'])) {
+            return false;
+        }
+        $ua = $_SERVER['HTTP_USER_AGENT'];
+        // quick escape for non-IEs
+        if (0 !== strpos($ua, 'Mozilla/4.0 (compatible; MSIE ')
+            || false !== strpos($ua, 'Opera')) {
+            return false;
+        }
+        // no regex = faaast
+        $version = (float)substr($ua, 30);
+        return self::$encodeToIe6
+            ? ($version < 6 || ($version == 6 && false === strpos($ua, 'SV1')))
+            : ($version < 7);
+    }
+    
+    protected $_content = '';
+    protected $_headers = array();
+    protected $_encodeMethod = array('', '');
+    protected $_useMbStrlen = false;
+}
diff --git a/inc/lib/minify/JSMin.php b/inc/lib/minify/JSMin.php
new file mode 100755
index 00000000..b6879f37
--- /dev/null
+++ b/inc/lib/minify/JSMin.php
@@ -0,0 +1,385 @@
+<?php
+/**
+ * JSMin.php - modified PHP implementation of Douglas Crockford's JSMin.
+ *
+ * <code>
+ * $minifiedJs = JSMin::minify($js);
+ * </code>
+ *
+ * This is a modified port of jsmin.c. Improvements:
+ * 
+ * Does not choke on some regexp literals containing quote characters. E.g. /'/
+ * 
+ * Spaces are preserved after some add/sub operators, so they are not mistakenly 
+ * converted to post-inc/dec. E.g. a + ++b -> a+ ++b
+ *
+ * Preserves multi-line comments that begin with /*!
+ * 
+ * PHP 5 or higher is required.
+ *
+ * Permission is hereby granted to use this version of the library under the
+ * same terms as jsmin.c, which has the following license:
+ *
+ * --
+ * Copyright (c) 2002 Douglas Crockford  (www.crockford.com)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * The Software shall be used for Good, not Evil.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ * --
+ *
+ * @package JSMin
+ * @author Ryan Grove <ryan@wonko.com> (PHP port)
+ * @author Steve Clay <steve@mrclay.org> (modifications + cleanup)
+ * @author Andrea Giammarchi <http://www.3site.eu> (spaceBeforeRegExp)
+ * @copyright 2002 Douglas Crockford <douglas@crockford.com> (jsmin.c)
+ * @copyright 2008 Ryan Grove <ryan@wonko.com> (PHP port)
+ * @license http://opensource.org/licenses/mit-license.php MIT License
+ * @link http://code.google.com/p/jsmin-php/
+ */
+
+class JSMin {
+    const ORD_LF            = 10;
+    const ORD_SPACE         = 32;
+    const ACTION_KEEP_A     = 1;
+    const ACTION_DELETE_A   = 2;
+    const ACTION_DELETE_A_B = 3;
+
+    protected $a           = "\n";
+    protected $b           = '';
+    protected $input       = '';
+    protected $inputIndex  = 0;
+    protected $inputLength = 0;
+    protected $lookAhead   = null;
+    protected $output      = '';
+    protected $lastByteOut  = '';
+
+    /**
+     * Minify Javascript.
+     *
+     * @param string $js Javascript to be minified
+     *
+     * @return string
+     */
+    public static function minify($js)
+    {
+        $jsmin = new JSMin($js);
+        return $jsmin->min();
+    }
+
+    /**
+     * @param string $input
+     */
+    public function __construct($input)
+    {
+        $this->input = $input;
+    }
+
+    /**
+     * Perform minification, return result
+     *
+     * @return string
+     */
+    public function min()
+    {
+        if ($this->output !== '') { // min already run
+            return $this->output;
+        }
+
+        $mbIntEnc = null;
+        if (function_exists('mb_strlen') && ((int)ini_get('mbstring.func_overload') & 2)) {
+            $mbIntEnc = mb_internal_encoding();
+            mb_internal_encoding('8bit');
+        }
+        $this->input = str_replace("\r\n", "\n", $this->input);
+        $this->inputLength = strlen($this->input);
+
+        $this->action(self::ACTION_DELETE_A_B);
+
+        while ($this->a !== null) {
+            // determine next command
+            $command = self::ACTION_KEEP_A; // default
+            if ($this->a === ' ') {
+                if (($this->lastByteOut === '+' || $this->lastByteOut === '-') 
+                    && ($this->b === $this->lastByteOut)) {
+                    // Don't delete this space. If we do, the addition/subtraction
+                    // could be parsed as a post-increment
+                } elseif (! $this->isAlphaNum($this->b)) {
+                    $command = self::ACTION_DELETE_A;
+                }
+            } elseif ($this->a === "\n") {
+                if ($this->b === ' ') {
+                    $command = self::ACTION_DELETE_A_B;
+                // in case of mbstring.func_overload & 2, must check for null b,
+                // otherwise mb_strpos will give WARNING
+                } elseif ($this->b === null
+                          || (false === strpos('{[(+-', $this->b)
+                              && ! $this->isAlphaNum($this->b))) {
+                    $command = self::ACTION_DELETE_A;
+                }
+            } elseif (! $this->isAlphaNum($this->a)) {
+                if ($this->b === ' '
+                    || ($this->b === "\n" 
+                        && (false === strpos('}])+-"\'', $this->a)))) {
+                    $command = self::ACTION_DELETE_A_B;
+                }
+            }
+            $this->action($command);
+        }
+        $this->output = trim($this->output);
+
+        if ($mbIntEnc !== null) {
+            mb_internal_encoding($mbIntEnc);
+        }
+        return $this->output;
+    }
+
+    /**
+     * ACTION_KEEP_A = Output A. Copy B to A. Get the next B.
+     * ACTION_DELETE_A = Copy B to A. Get the next B.
+     * ACTION_DELETE_A_B = Get the next B.
+     *
+     * @param int $command
+     * @throws JSMin_UnterminatedRegExpException|JSMin_UnterminatedStringException
+     */
+    protected function action($command)
+    {
+        if ($command === self::ACTION_DELETE_A_B 
+            && $this->b === ' '
+            && ($this->a === '+' || $this->a === '-')) {
+            // Note: we're at an addition/substraction operator; the inputIndex
+            // will certainly be a valid index
+            if ($this->input[$this->inputIndex] === $this->a) {
+                // This is "+ +" or "- -". Don't delete the space.
+                $command = self::ACTION_KEEP_A;
+            }
+        }
+        switch ($command) {
+            case self::ACTION_KEEP_A:
+                $this->output .= $this->a;
+                $this->lastByteOut = $this->a;
+                
+                // fallthrough
+            case self::ACTION_DELETE_A:
+                $this->a = $this->b;
+                if ($this->a === "'" || $this->a === '"') { // string literal
+                    $str = $this->a; // in case needed for exception
+                    while (true) {
+                        $this->output .= $this->a;
+                        $this->lastByteOut = $this->a;
+                        
+                        $this->a       = $this->get();
+                        if ($this->a === $this->b) { // end quote
+                            break;
+                        }
+                        if (ord($this->a) <= self::ORD_LF) {
+                            throw new JSMin_UnterminatedStringException(
+                                "JSMin: Unterminated String at byte "
+                                . $this->inputIndex . ": {$str}");
+                        }
+                        $str .= $this->a;
+                        if ($this->a === '\\') {
+                            $this->output .= $this->a;
+                            $this->lastByteOut = $this->a;
+                            
+                            $this->a       = $this->get();
+                            $str .= $this->a;
+                        }
+                    }
+                }
+                // fallthrough
+            case self::ACTION_DELETE_A_B:
+                $this->b = $this->next();
+                if ($this->b === '/' && $this->isRegexpLiteral()) { // RegExp literal
+                    $this->output .= $this->a . $this->b;
+                    $pattern = '/'; // in case needed for exception
+                    while (true) {
+                        $this->a = $this->get();
+                        $pattern .= $this->a;
+                        if ($this->a === '/') { // end pattern
+                            break; // while (true)
+                        } elseif ($this->a === '\\') {
+                            $this->output .= $this->a;
+                            $this->a       = $this->get();
+                            $pattern      .= $this->a;
+                        } elseif (ord($this->a) <= self::ORD_LF) {
+                            throw new JSMin_UnterminatedRegExpException(
+                                "JSMin: Unterminated RegExp at byte "
+                                . $this->inputIndex .": {$pattern}");
+                        }
+                        $this->output .= $this->a;
+                        $this->lastByteOut = $this->a;
+                    }
+                    $this->b = $this->next();
+                }
+            // end case ACTION_DELETE_A_B
+        }
+    }
+
+    /**
+     * @return bool
+     */
+    protected function isRegexpLiteral()
+    {
+        if (false !== strpos("\n{;(,=:[!&|?", $this->a)) { // we aren't dividing
+            return true;
+        }
+        if (' ' === $this->a) {
+            $length = strlen($this->output);
+            if ($length < 2) { // weird edge case
+                return true;
+            }
+            // you can't divide a keyword
+            if (preg_match('/(?:case|else|in|return|typeof)$/', $this->output, $m)) {
+                if ($this->output === $m[0]) { // odd but could happen
+                    return true;
+                }
+                // make sure it's a keyword, not end of an identifier
+                $charBeforeKeyword = substr($this->output, $length - strlen($m[0]) - 1, 1);
+                if (! $this->isAlphaNum($charBeforeKeyword)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Get next char. Convert ctrl char to space.
+     *
+     * @return string
+     */
+    protected function get()
+    {
+        $c = $this->lookAhead;
+        $this->lookAhead = null;
+        if ($c === null) {
+            if ($this->inputIndex < $this->inputLength) {
+                $c = $this->input[$this->inputIndex];
+                $this->inputIndex += 1;
+            } else {
+                return null;
+            }
+        }
+        if ($c === "\r" || $c === "\n") {
+            return "\n";
+        }
+        if (ord($c) < self::ORD_SPACE) { // control char
+            return ' ';
+        }
+        return $c;
+    }
+
+    /**
+     * Get next char. If is ctrl character, translate to a space or newline.
+     *
+     * @return string
+     */
+    protected function peek()
+    {
+        $this->lookAhead = $this->get();
+        return $this->lookAhead;
+    }
+
+    /**
+     * Is $c a letter, digit, underscore, dollar sign, escape, or non-ASCII?
+     *
+     * @param string $c
+     *
+     * @return bool
+     */
+    protected function isAlphaNum($c)
+    {
+        return (preg_match('/^[0-9a-zA-Z_\\$\\\\]$/', $c) || ord($c) > 126);
+    }
+
+    /**
+     * @return string
+     */
+    protected function singleLineComment()
+    {
+        $comment = '';
+        while (true) {
+            $get = $this->get();
+            $comment .= $get;
+            if (ord($get) <= self::ORD_LF) { // EOL reached
+                // if IE conditional comment
+                if (preg_match('/^\\/@(?:cc_on|if|elif|else|end)\\b/', $comment)) {
+                    return "/{$comment}";
+                }
+                return $get;
+            }
+        }
+    }
+
+    /**
+     * @return string
+     * @throws JSMin_UnterminatedCommentException
+     */
+    protected function multipleLineComment()
+    {
+        $this->get();
+        $comment = '';
+        while (true) {
+            $get = $this->get();
+            if ($get === '*') {
+                if ($this->peek() === '/') { // end of comment reached
+                    $this->get();
+                    // if comment preserved by YUI Compressor
+                    if (0 === strpos($comment, '!')) {
+                        return "\n/*!" . substr($comment, 1) . "*/\n";
+                    }
+                    // if IE conditional comment
+                    if (preg_match('/^@(?:cc_on|if|elif|else|end)\\b/', $comment)) {
+                        return "/*{$comment}*/";
+                    }
+                    return ' ';
+                }
+            } elseif ($get === null) {
+                throw new JSMin_UnterminatedCommentException(
+                    "JSMin: Unterminated comment at byte "
+                    . $this->inputIndex . ": /*{$comment}");
+            }
+            $comment .= $get;
+        }
+    }
+
+    /**
+     * Get the next character, skipping over comments.
+     * Some comments may be preserved.
+     *
+     * @return string
+     */
+    protected function next()
+    {
+        $get = $this->get();
+        if ($get !== '/') {
+            return $get;
+        }
+        switch ($this->peek()) {
+            case '/': return $this->singleLineComment();
+            case '*': return $this->multipleLineComment();
+            default: return $get;
+        }
+    }
+}
+
+class JSMin_UnterminatedStringException extends Exception {}
+class JSMin_UnterminatedCommentException extends Exception {}
+class JSMin_UnterminatedRegExpException extends Exception {}
diff --git a/inc/lib/minify/JSMinPlus.php b/inc/lib/minify/JSMinPlus.php
new file mode 100755
index 00000000..5a3c5bdf
--- /dev/null
+++ b/inc/lib/minify/JSMinPlus.php
@@ -0,0 +1,2086 @@
+<?php
+
+/**
+ * JSMinPlus version 1.4
+ *
+ * Minifies a javascript file using a javascript parser
+ *
+ * This implements a PHP port of Brendan Eich's Narcissus open source javascript engine (in javascript)
+ * References: http://en.wikipedia.org/wiki/Narcissus_(JavaScript_engine)
+ * Narcissus sourcecode: http://mxr.mozilla.org/mozilla/source/js/narcissus/
+ * JSMinPlus weblog: http://crisp.tweakblogs.net/blog/cat/716
+ *
+ * Tino Zijdel <crisp@tweakers.net>
+ *
+ * Usage: $minified = JSMinPlus::minify($script [, $filename])
+ *
+ * Versionlog (see also changelog.txt):
+ * 23-07-2011 - remove dynamic creation of OP_* and KEYWORD_* defines and declare them on top
+ *              reduce memory footprint by minifying by block-scope
+ *              some small byte-saving and performance improvements
+ * 12-05-2009 - fixed hook:colon precedence, fixed empty body in loop and if-constructs
+ * 18-04-2009 - fixed crashbug in PHP 5.2.9 and several other bugfixes
+ * 12-04-2009 - some small bugfixes and performance improvements
+ * 09-04-2009 - initial open sourced version 1.0
+ *
+ * Latest version of this script: http://files.tweakers.net/jsminplus/jsminplus.zip
+ *
+ */
+
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Narcissus JavaScript engine.
+ *
+ * The Initial Developer of the Original Code is
+ * Brendan Eich <brendan@mozilla.org>.
+ * Portions created by the Initial Developer are Copyright (C) 2004
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s): Tino Zijdel <crisp@tweakers.net>
+ * PHP port, modifications and minifier routine are (C) 2009-2011
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+define('TOKEN_END', 1);
+define('TOKEN_NUMBER', 2);
+define('TOKEN_IDENTIFIER', 3);
+define('TOKEN_STRING', 4);
+define('TOKEN_REGEXP', 5);
+define('TOKEN_NEWLINE', 6);
+define('TOKEN_CONDCOMMENT_START', 7);
+define('TOKEN_CONDCOMMENT_END', 8);
+
+define('JS_SCRIPT', 100);
+define('JS_BLOCK', 101);
+define('JS_LABEL', 102);
+define('JS_FOR_IN', 103);
+define('JS_CALL', 104);
+define('JS_NEW_WITH_ARGS', 105);
+define('JS_INDEX', 106);
+define('JS_ARRAY_INIT', 107);
+define('JS_OBJECT_INIT', 108);
+define('JS_PROPERTY_INIT', 109);
+define('JS_GETTER', 110);
+define('JS_SETTER', 111);
+define('JS_GROUP', 112);
+define('JS_LIST', 113);
+
+define('JS_MINIFIED', 999);
+
+define('DECLARED_FORM', 0);
+define('EXPRESSED_FORM', 1);
+define('STATEMENT_FORM', 2);
+
+/* Operators */
+define('OP_SEMICOLON', ';');
+define('OP_COMMA', ',');
+define('OP_HOOK', '?');
+define('OP_COLON', ':');
+define('OP_OR', '||');
+define('OP_AND', '&&');
+define('OP_BITWISE_OR', '|');
+define('OP_BITWISE_XOR', '^');
+define('OP_BITWISE_AND', '&');
+define('OP_STRICT_EQ', '===');
+define('OP_EQ', '==');
+define('OP_ASSIGN', '=');
+define('OP_STRICT_NE', '!==');
+define('OP_NE', '!=');
+define('OP_LSH', '<<');
+define('OP_LE', '<=');
+define('OP_LT', '<');
+define('OP_URSH', '>>>');
+define('OP_RSH', '>>');
+define('OP_GE', '>=');
+define('OP_GT', '>');
+define('OP_INCREMENT', '++');
+define('OP_DECREMENT', '--');
+define('OP_PLUS', '+');
+define('OP_MINUS', '-');
+define('OP_MUL', '*');
+define('OP_DIV', '/');
+define('OP_MOD', '%');
+define('OP_NOT', '!');
+define('OP_BITWISE_NOT', '~');
+define('OP_DOT', '.');
+define('OP_LEFT_BRACKET', '[');
+define('OP_RIGHT_BRACKET', ']');
+define('OP_LEFT_CURLY', '{');
+define('OP_RIGHT_CURLY', '}');
+define('OP_LEFT_PAREN', '(');
+define('OP_RIGHT_PAREN', ')');
+define('OP_CONDCOMMENT_END', '@*/');
+
+define('OP_UNARY_PLUS', 'U+');
+define('OP_UNARY_MINUS', 'U-');
+
+/* Keywords */
+define('KEYWORD_BREAK', 'break');
+define('KEYWORD_CASE', 'case');
+define('KEYWORD_CATCH', 'catch');
+define('KEYWORD_CONST', 'const');
+define('KEYWORD_CONTINUE', 'continue');
+define('KEYWORD_DEBUGGER', 'debugger');
+define('KEYWORD_DEFAULT', 'default');
+define('KEYWORD_DELETE', 'delete');
+define('KEYWORD_DO', 'do');
+define('KEYWORD_ELSE', 'else');
+define('KEYWORD_ENUM', 'enum');
+define('KEYWORD_FALSE', 'false');
+define('KEYWORD_FINALLY', 'finally');
+define('KEYWORD_FOR', 'for');
+define('KEYWORD_FUNCTION', 'function');
+define('KEYWORD_IF', 'if');
+define('KEYWORD_IN', 'in');
+define('KEYWORD_INSTANCEOF', 'instanceof');
+define('KEYWORD_NEW', 'new');
+define('KEYWORD_NULL', 'null');
+define('KEYWORD_RETURN', 'return');
+define('KEYWORD_SWITCH', 'switch');
+define('KEYWORD_THIS', 'this');
+define('KEYWORD_THROW', 'throw');
+define('KEYWORD_TRUE', 'true');
+define('KEYWORD_TRY', 'try');
+define('KEYWORD_TYPEOF', 'typeof');
+define('KEYWORD_VAR', 'var');
+define('KEYWORD_VOID', 'void');
+define('KEYWORD_WHILE', 'while');
+define('KEYWORD_WITH', 'with');
+
+
+class JSMinPlus
+{
+	private $parser;
+	private $reserved = array(
+		'break', 'case', 'catch', 'continue', 'default', 'delete', 'do',
+		'else', 'finally', 'for', 'function', 'if', 'in', 'instanceof',
+		'new', 'return', 'switch', 'this', 'throw', 'try', 'typeof', 'var',
+		'void', 'while', 'with',
+		// Words reserved for future use
+		'abstract', 'boolean', 'byte', 'char', 'class', 'const', 'debugger',
+		'double', 'enum', 'export', 'extends', 'final', 'float', 'goto',
+		'implements', 'import', 'int', 'interface', 'long', 'native',
+		'package', 'private', 'protected', 'public', 'short', 'static',
+		'super', 'synchronized', 'throws', 'transient', 'volatile',
+		// These are not reserved, but should be taken into account
+		// in isValidIdentifier (See jslint source code)
+		'arguments', 'eval', 'true', 'false', 'Infinity', 'NaN', 'null', 'undefined'
+	);
+
+	private function __construct()
+	{
+		$this->parser = new JSParser($this);
+	}
+
+	public static function minify($js, $filename='')
+	{
+		static $instance;
+
+		// this is a singleton
+		if(!$instance)
+			$instance = new JSMinPlus();
+
+		return $instance->min($js, $filename);
+	}
+
+	private function min($js, $filename)
+	{
+		try
+		{
+			$n = $this->parser->parse($js, $filename, 1);
+			return $this->parseTree($n);
+		}
+		catch(Exception $e)
+		{
+			echo $e->getMessage() . "\n";
+		}
+
+		return false;
+	}
+
+	public function parseTree($n, $noBlockGrouping = false)
+	{
+		$s = '';
+
+		switch ($n->type)
+		{
+			case JS_MINIFIED:
+				$s = $n->value;
+			break;
+
+			case JS_SCRIPT:
+				// we do nothing yet with funDecls or varDecls
+				$noBlockGrouping = true;
+			// FALL THROUGH
+
+			case JS_BLOCK:
+				$childs = $n->treeNodes;
+				$lastType = 0;
+				for ($c = 0, $i = 0, $j = count($childs); $i < $j; $i++)
+				{
+					$type = $childs[$i]->type;
+					$t = $this->parseTree($childs[$i]);
+					if (strlen($t))
+					{
+						if ($c)
+						{
+							$s = rtrim($s, ';');
+
+							if ($type == KEYWORD_FUNCTION && $childs[$i]->functionForm == DECLARED_FORM)
+							{
+								// put declared functions on a new line
+								$s .= "\n";
+							}
+							elseif ($type == KEYWORD_VAR && $type == $lastType)
+							{
+								// mutiple var-statements can go into one
+								$t = ',' . substr($t, 4);
+							}
+							else
+							{
+								// add terminator
+								$s .= ';';
+							}
+						}
+
+						$s .= $t;
+
+						$c++;
+						$lastType = $type;
+					}
+				}
+
+				if ($c > 1 && !$noBlockGrouping)
+				{
+					$s = '{' . $s . '}';
+				}
+			break;
+
+			case KEYWORD_FUNCTION:
+				$s .= 'function' . ($n->name ? ' ' . $n->name : '') . '(';
+				$params = $n->params;
+				for ($i = 0, $j = count($params); $i < $j; $i++)
+					$s .= ($i ? ',' : '') . $params[$i];
+				$s .= '){' . $this->parseTree($n->body, true) . '}';
+			break;
+
+			case KEYWORD_IF:
+				$s = 'if(' . $this->parseTree($n->condition) . ')';
+				$thenPart = $this->parseTree($n->thenPart);
+				$elsePart = $n->elsePart ? $this->parseTree($n->elsePart) : null;
+
+				// empty if-statement
+				if ($thenPart == '')
+					$thenPart = ';';
+
+				if ($elsePart)
+				{
+					// be carefull and always make a block out of the thenPart; could be more optimized but is a lot of trouble
+					if ($thenPart != ';' && $thenPart[0] != '{')
+						$thenPart = '{' . $thenPart . '}';
+
+					$s .= $thenPart . 'else';
+
+					// we could check for more, but that hardly ever applies so go for performance
+					if ($elsePart[0] != '{')
+						$s .= ' ';
+
+					$s .= $elsePart;
+				}
+				else
+				{
+					$s .= $thenPart;
+				}
+			break;
+
+			case KEYWORD_SWITCH:
+				$s = 'switch(' . $this->parseTree($n->discriminant) . '){';
+				$cases = $n->cases;
+				for ($i = 0, $j = count($cases); $i < $j; $i++)
+				{
+					$case = $cases[$i];
+					if ($case->type == KEYWORD_CASE)
+						$s .= 'case' . ($case->caseLabel->type != TOKEN_STRING ? ' ' : '') . $this->parseTree($case->caseLabel) . ':';
+					else
+						$s .= 'default:';
+
+					$statement = $this->parseTree($case->statements, true);
+					if ($statement)
+					{
+						$s .= $statement;
+						// no terminator for last statement
+						if ($i + 1 < $j)
+							$s .= ';';
+					}
+				}
+				$s .= '}';
+			break;
+
+			case KEYWORD_FOR:
+				$s = 'for(' . ($n->setup ? $this->parseTree($n->setup) : '')
+					. ';' . ($n->condition ? $this->parseTree($n->condition) : '')
+					. ';' . ($n->update ? $this->parseTree($n->update) : '') . ')';
+
+				$body  = $this->parseTree($n->body);
+				if ($body == '')
+					$body = ';';
+
+				$s .= $body;
+			break;
+
+			case KEYWORD_WHILE:
+				$s = 'while(' . $this->parseTree($n->condition) . ')';
+
+				$body  = $this->parseTree($n->body);
+				if ($body == '')
+					$body = ';';
+
+				$s .= $body;
+			break;
+
+			case JS_FOR_IN:
+				$s = 'for(' . ($n->varDecl ? $this->parseTree($n->varDecl) : $this->parseTree($n->iterator)) . ' in ' . $this->parseTree($n->object) . ')';
+
+				$body  = $this->parseTree($n->body);
+				if ($body == '')
+					$body = ';';
+
+				$s .= $body;
+			break;
+
+			case KEYWORD_DO:
+				$s = 'do{' . $this->parseTree($n->body, true) . '}while(' . $this->parseTree($n->condition) . ')';
+			break;
+
+			case KEYWORD_BREAK:
+			case KEYWORD_CONTINUE:
+				$s = $n->value . ($n->label ? ' ' . $n->label : '');
+			break;
+
+			case KEYWORD_TRY:
+				$s = 'try{' . $this->parseTree($n->tryBlock, true) . '}';
+				$catchClauses = $n->catchClauses;
+				for ($i = 0, $j = count($catchClauses); $i < $j; $i++)
+				{
+					$t = $catchClauses[$i];
+					$s .= 'catch(' . $t->varName . ($t->guard ? ' if ' . $this->parseTree($t->guard) : '') . '){' . $this->parseTree($t->block, true) . '}';
+				}
+				if ($n->finallyBlock)
+					$s .= 'finally{' . $this->parseTree($n->finallyBlock, true) . '}';
+			break;
+
+			case KEYWORD_THROW:
+			case KEYWORD_RETURN:
+				$s = $n->type;
+				if ($n->value)
+				{
+					$t = $this->parseTree($n->value);
+					if (strlen($t))
+					{
+						if ($this->isWordChar($t[0]) || $t[0] == '\\')
+							$s .= ' ';
+
+						$s .= $t;
+					}
+				}
+			break;
+
+			case KEYWORD_WITH:
+				$s = 'with(' . $this->parseTree($n->object) . ')' . $this->parseTree($n->body);
+			break;
+
+			case KEYWORD_VAR:
+			case KEYWORD_CONST:
+				$s = $n->value . ' ';
+				$childs = $n->treeNodes;
+				for ($i = 0, $j = count($childs); $i < $j; $i++)
+				{
+					$t = $childs[$i];
+					$s .= ($i ? ',' : '') . $t->name;
+					$u = $t->initializer;
+					if ($u)
+						$s .= '=' . $this->parseTree($u);
+				}
+			break;
+
+			case KEYWORD_IN:
+			case KEYWORD_INSTANCEOF:
+				$left = $this->parseTree($n->treeNodes[0]);
+				$right = $this->parseTree($n->treeNodes[1]);
+
+				$s = $left;
+
+				if ($this->isWordChar(substr($left, -1)))
+					$s .= ' ';
+
+				$s .= $n->type;
+
+				if ($this->isWordChar($right[0]) || $right[0] == '\\')
+					$s .= ' ';
+
+				$s .= $right;
+			break;
+
+			case KEYWORD_DELETE:
+			case KEYWORD_TYPEOF:
+				$right = $this->parseTree($n->treeNodes[0]);
+
+				$s = $n->type;
+
+				if ($this->isWordChar($right[0]) || $right[0] == '\\')
+					$s .= ' ';
+
+				$s .= $right;
+			break;
+
+			case KEYWORD_VOID:
+				$s = 'void(' . $this->parseTree($n->treeNodes[0]) . ')';
+			break;
+
+			case KEYWORD_DEBUGGER:
+				throw new Exception('NOT IMPLEMENTED: DEBUGGER');
+			break;
+
+			case TOKEN_CONDCOMMENT_START:
+			case TOKEN_CONDCOMMENT_END:
+				$s = $n->value . ($n->type == TOKEN_CONDCOMMENT_START ? ' ' : '');
+				$childs = $n->treeNodes;
+				for ($i = 0, $j = count($childs); $i < $j; $i++)
+					$s .= $this->parseTree($childs[$i]);
+			break;
+
+			case OP_SEMICOLON:
+				if ($expression = $n->expression)
+					$s = $this->parseTree($expression);
+			break;
+
+			case JS_LABEL:
+				$s = $n->label . ':' . $this->parseTree($n->statement);
+			break;
+
+			case OP_COMMA:
+				$childs = $n->treeNodes;
+				for ($i = 0, $j = count($childs); $i < $j; $i++)
+					$s .= ($i ? ',' : '') . $this->parseTree($childs[$i]);
+			break;
+
+			case OP_ASSIGN:
+				$s = $this->parseTree($n->treeNodes[0]) . $n->value . $this->parseTree($n->treeNodes[1]);
+			break;
+
+			case OP_HOOK:
+				$s = $this->parseTree($n->treeNodes[0]) . '?' . $this->parseTree($n->treeNodes[1]) . ':' . $this->parseTree($n->treeNodes[2]);
+			break;
+
+			case OP_OR: case OP_AND:
+			case OP_BITWISE_OR: case OP_BITWISE_XOR: case OP_BITWISE_AND:
+			case OP_EQ: case OP_NE: case OP_STRICT_EQ: case OP_STRICT_NE:
+			case OP_LT: case OP_LE: case OP_GE: case OP_GT:
+			case OP_LSH: case OP_RSH: case OP_URSH:
+			case OP_MUL: case OP_DIV: case OP_MOD:
+				$s = $this->parseTree($n->treeNodes[0]) . $n->type . $this->parseTree($n->treeNodes[1]);
+			break;
+
+			case OP_PLUS:
+			case OP_MINUS:
+				$left = $this->parseTree($n->treeNodes[0]);
+				$right = $this->parseTree($n->treeNodes[1]);
+
+				switch ($n->treeNodes[1]->type)
+				{
+					case OP_PLUS:
+					case OP_MINUS:
+					case OP_INCREMENT:
+					case OP_DECREMENT:
+					case OP_UNARY_PLUS:
+					case OP_UNARY_MINUS:
+						$s = $left . $n->type . ' ' . $right;
+					break;
+
+					case TOKEN_STRING:
+						//combine concatted strings with same quotestyle
+						if ($n->type == OP_PLUS && substr($left, -1) == $right[0])
+						{
+							$s = substr($left, 0, -1) . substr($right, 1);
+							break;
+						}
+					// FALL THROUGH
+
+					default:
+						$s = $left . $n->type . $right;
+				}
+			break;
+
+			case OP_NOT:
+			case OP_BITWISE_NOT:
+			case OP_UNARY_PLUS:
+			case OP_UNARY_MINUS:
+				$s = $n->value . $this->parseTree($n->treeNodes[0]);
+			break;
+
+			case OP_INCREMENT:
+			case OP_DECREMENT:
+				if ($n->postfix)
+					$s = $this->parseTree($n->treeNodes[0]) . $n->value;
+				else
+					$s = $n->value . $this->parseTree($n->treeNodes[0]);
+			break;
+
+			case OP_DOT:
+				$s = $this->parseTree($n->treeNodes[0]) . '.' . $this->parseTree($n->treeNodes[1]);
+			break;
+
+			case JS_INDEX:
+				$s = $this->parseTree($n->treeNodes[0]);
+				// See if we can replace named index with a dot saving 3 bytes
+				if (	$n->treeNodes[0]->type == TOKEN_IDENTIFIER &&
+					$n->treeNodes[1]->type == TOKEN_STRING &&
+					$this->isValidIdentifier(substr($n->treeNodes[1]->value, 1, -1))
+				)
+					$s .= '.' . substr($n->treeNodes[1]->value, 1, -1);
+				else
+					$s .= '[' . $this->parseTree($n->treeNodes[1]) . ']';
+			break;
+
+			case JS_LIST:
+				$childs = $n->treeNodes;
+				for ($i = 0, $j = count($childs); $i < $j; $i++)
+					$s .= ($i ? ',' : '') . $this->parseTree($childs[$i]);
+			break;
+
+			case JS_CALL:
+				$s = $this->parseTree($n->treeNodes[0]) . '(' . $this->parseTree($n->treeNodes[1]) . ')';
+			break;
+
+			case KEYWORD_NEW:
+			case JS_NEW_WITH_ARGS:
+				$s = 'new ' . $this->parseTree($n->treeNodes[0]) . '(' . ($n->type == JS_NEW_WITH_ARGS ? $this->parseTree($n->treeNodes[1]) : '') . ')';
+			break;
+
+			case JS_ARRAY_INIT:
+				$s = '[';
+				$childs = $n->treeNodes;
+				for ($i = 0, $j = count($childs); $i < $j; $i++)
+				{
+					$s .= ($i ? ',' : '') . $this->parseTree($childs[$i]);
+				}
+				$s .= ']';
+			break;
+
+			case JS_OBJECT_INIT:
+				$s = '{';
+				$childs = $n->treeNodes;
+				for ($i = 0, $j = count($childs); $i < $j; $i++)
+				{
+					$t = $childs[$i];
+					if ($i)
+						$s .= ',';
+					if ($t->type == JS_PROPERTY_INIT)
+					{
+						// Ditch the quotes when the index is a valid identifier
+						if (	$t->treeNodes[0]->type == TOKEN_STRING &&
+							$this->isValidIdentifier(substr($t->treeNodes[0]->value, 1, -1))
+						)
+							$s .= substr($t->treeNodes[0]->value, 1, -1);
+						else
+							$s .= $t->treeNodes[0]->value;
+
+						$s .= ':' . $this->parseTree($t->treeNodes[1]);
+					}
+					else
+					{
+						$s .= $t->type == JS_GETTER ? 'get' : 'set';
+						$s .= ' ' . $t->name . '(';
+						$params = $t->params;
+						for ($i = 0, $j = count($params); $i < $j; $i++)
+							$s .= ($i ? ',' : '') . $params[$i];
+						$s .= '){' . $this->parseTree($t->body, true) . '}';
+					}
+				}
+				$s .= '}';
+			break;
+
+			case TOKEN_NUMBER:
+				$s = $n->value;
+				if (preg_match('/^([1-9]+)(0{3,})$/', $s, $m))
+					$s = $m[1] . 'e' . strlen($m[2]);
+			break;
+
+			case KEYWORD_NULL: case KEYWORD_THIS: case KEYWORD_TRUE: case KEYWORD_FALSE:
+			case TOKEN_IDENTIFIER: case TOKEN_STRING: case TOKEN_REGEXP:
+				$s = $n->value;
+			break;
+
+			case JS_GROUP:
+				if (in_array(
+					$n->treeNodes[0]->type,
+					array(
+						JS_ARRAY_INIT, JS_OBJECT_INIT, JS_GROUP,
+						TOKEN_NUMBER, TOKEN_STRING, TOKEN_REGEXP, TOKEN_IDENTIFIER,
+						KEYWORD_NULL, KEYWORD_THIS, KEYWORD_TRUE, KEYWORD_FALSE
+					)
+				))
+				{
+					$s = $this->parseTree($n->treeNodes[0]);
+				}
+				else
+				{
+					$s = '(' . $this->parseTree($n->treeNodes[0]) . ')';
+				}
+			break;
+
+			default:
+				throw new Exception('UNKNOWN TOKEN TYPE: ' . $n->type);
+		}
+
+		return $s;
+	}
+
+	private function isValidIdentifier($string)
+	{
+		return preg_match('/^[a-zA-Z_][a-zA-Z0-9_]*$/', $string) && !in_array($string, $this->reserved);
+	}
+
+	private function isWordChar($char)
+	{
+		return $char == '_' || $char == '$' || ctype_alnum($char);
+	}
+}
+
+class JSParser
+{
+	private $t;
+	private $minifier;
+
+	private $opPrecedence = array(
+		';' => 0,
+		',' => 1,
+		'=' => 2, '?' => 2, ':' => 2,
+		// The above all have to have the same precedence, see bug 330975
+		'||' => 4,
+		'&&' => 5,
+		'|' => 6,
+		'^' => 7,
+		'&' => 8,
+		'==' => 9, '!=' => 9, '===' => 9, '!==' => 9,
+		'<' => 10, '<=' => 10, '>=' => 10, '>' => 10, 'in' => 10, 'instanceof' => 10,
+		'<<' => 11, '>>' => 11, '>>>' => 11,
+		'+' => 12, '-' => 12,
+		'*' => 13, '/' => 13, '%' => 13,
+		'delete' => 14, 'void' => 14, 'typeof' => 14,
+		'!' => 14, '~' => 14, 'U+' => 14, 'U-' => 14,
+		'++' => 15, '--' => 15,
+		'new' => 16,
+		'.' => 17,
+		JS_NEW_WITH_ARGS => 0, JS_INDEX => 0, JS_CALL => 0,
+		JS_ARRAY_INIT => 0, JS_OBJECT_INIT => 0, JS_GROUP => 0
+	);
+
+	private $opArity = array(
+		',' => -2,
+		'=' => 2,
+		'?' => 3,
+		'||' => 2,
+		'&&' => 2,
+		'|' => 2,
+		'^' => 2,
+		'&' => 2,
+		'==' => 2, '!=' => 2, '===' => 2, '!==' => 2,
+		'<' => 2, '<=' => 2, '>=' => 2, '>' => 2, 'in' => 2, 'instanceof' => 2,
+		'<<' => 2, '>>' => 2, '>>>' => 2,
+		'+' => 2, '-' => 2,
+		'*' => 2, '/' => 2, '%' => 2,
+		'delete' => 1, 'void' => 1, 'typeof' => 1,
+		'!' => 1, '~' => 1, 'U+' => 1, 'U-' => 1,
+		'++' => 1, '--' => 1,
+		'new' => 1,
+		'.' => 2,
+		JS_NEW_WITH_ARGS => 2, JS_INDEX => 2, JS_CALL => 2,
+		JS_ARRAY_INIT => 1, JS_OBJECT_INIT => 1, JS_GROUP => 1,
+		TOKEN_CONDCOMMENT_START => 1, TOKEN_CONDCOMMENT_END => 1
+	);
+
+	public function __construct($minifier=null)
+	{
+		$this->minifier = $minifier;
+		$this->t = new JSTokenizer();
+	}
+
+	public function parse($s, $f, $l)
+	{
+		// initialize tokenizer
+		$this->t->init($s, $f, $l);
+
+		$x = new JSCompilerContext(false);
+		$n = $this->Script($x);
+		if (!$this->t->isDone())
+			throw $this->t->newSyntaxError('Syntax error');
+
+		return $n;
+	}
+
+	private function Script($x)
+	{
+		$n = $this->Statements($x);
+		$n->type = JS_SCRIPT;
+		$n->funDecls = $x->funDecls;
+		$n->varDecls = $x->varDecls;
+
+		// minify by scope
+		if ($this->minifier)
+		{
+			$n->value = $this->minifier->parseTree($n);
+
+			// clear tree from node to save memory
+			$n->treeNodes = null;
+			$n->funDecls = null;
+			$n->varDecls = null;
+
+			$n->type = JS_MINIFIED;
+		}
+
+		return $n;
+	}
+
+	private function Statements($x)
+	{
+		$n = new JSNode($this->t, JS_BLOCK);
+		array_push($x->stmtStack, $n);
+
+		while (!$this->t->isDone() && $this->t->peek() != OP_RIGHT_CURLY)
+			$n->addNode($this->Statement($x));
+
+		array_pop($x->stmtStack);
+
+		return $n;
+	}
+
+	private function Block($x)
+	{
+		$this->t->mustMatch(OP_LEFT_CURLY);
+		$n = $this->Statements($x);
+		$this->t->mustMatch(OP_RIGHT_CURLY);
+
+		return $n;
+	}
+
+	private function Statement($x)
+	{
+		$tt = $this->t->get();
+		$n2 = null;
+
+		// Cases for statements ending in a right curly return early, avoiding the
+		// common semicolon insertion magic after this switch.
+		switch ($tt)
+		{
+			case KEYWORD_FUNCTION:
+				return $this->FunctionDefinition(
+					$x,
+					true,
+					count($x->stmtStack) > 1 ? STATEMENT_FORM : DECLARED_FORM
+				);
+			break;
+
+			case OP_LEFT_CURLY:
+				$n = $this->Statements($x);
+				$this->t->mustMatch(OP_RIGHT_CURLY);
+			return $n;
+
+			case KEYWORD_IF:
+				$n = new JSNode($this->t);
+				$n->condition = $this->ParenExpression($x);
+				array_push($x->stmtStack, $n);
+				$n->thenPart = $this->Statement($x);
+				$n->elsePart = $this->t->match(KEYWORD_ELSE) ? $this->Statement($x) : null;
+				array_pop($x->stmtStack);
+			return $n;
+
+			case KEYWORD_SWITCH:
+				$n = new JSNode($this->t);
+				$this->t->mustMatch(OP_LEFT_PAREN);
+				$n->discriminant = $this->Expression($x);
+				$this->t->mustMatch(OP_RIGHT_PAREN);
+				$n->cases = array();
+				$n->defaultIndex = -1;
+
+				array_push($x->stmtStack, $n);
+
+				$this->t->mustMatch(OP_LEFT_CURLY);
+
+				while (($tt = $this->t->get()) != OP_RIGHT_CURLY)
+				{
+					switch ($tt)
+					{
+						case KEYWORD_DEFAULT:
+							if ($n->defaultIndex >= 0)
+								throw $this->t->newSyntaxError('More than one switch default');
+							// FALL THROUGH
+						case KEYWORD_CASE:
+							$n2 = new JSNode($this->t);
+							if ($tt == KEYWORD_DEFAULT)
+								$n->defaultIndex = count($n->cases);
+							else
+								$n2->caseLabel = $this->Expression($x, OP_COLON);
+								break;
+						default:
+							throw $this->t->newSyntaxError('Invalid switch case');
+					}
+
+					$this->t->mustMatch(OP_COLON);
+					$n2->statements = new JSNode($this->t, JS_BLOCK);
+					while (($tt = $this->t->peek()) != KEYWORD_CASE && $tt != KEYWORD_DEFAULT && $tt != OP_RIGHT_CURLY)
+						$n2->statements->addNode($this->Statement($x));
+
+					array_push($n->cases, $n2);
+				}
+
+				array_pop($x->stmtStack);
+			return $n;
+
+			case KEYWORD_FOR:
+				$n = new JSNode($this->t);
+				$n->isLoop = true;
+				$this->t->mustMatch(OP_LEFT_PAREN);
+
+				if (($tt = $this->t->peek()) != OP_SEMICOLON)
+				{
+					$x->inForLoopInit = true;
+					if ($tt == KEYWORD_VAR || $tt == KEYWORD_CONST)
+					{
+						$this->t->get();
+						$n2 = $this->Variables($x);
+					}
+					else
+					{
+						$n2 = $this->Expression($x);
+					}
+					$x->inForLoopInit = false;
+				}
+
+				if ($n2 && $this->t->match(KEYWORD_IN))
+				{
+					$n->type = JS_FOR_IN;
+					if ($n2->type == KEYWORD_VAR)
+					{
+						if (count($n2->treeNodes) != 1)
+						{
+							throw $this->t->SyntaxError(
+								'Invalid for..in left-hand side',
+								$this->t->filename,
+								$n2->lineno
+							);
+						}
+
+						// NB: n2[0].type == IDENTIFIER and n2[0].value == n2[0].name.
+						$n->iterator = $n2->treeNodes[0];
+						$n->varDecl = $n2;
+					}
+					else
+					{
+						$n->iterator = $n2;
+						$n->varDecl = null;
+					}
+
+					$n->object = $this->Expression($x);
+				}
+				else
+				{
+					$n->setup = $n2 ? $n2 : null;
+					$this->t->mustMatch(OP_SEMICOLON);
+					$n->condition = $this->t->peek() == OP_SEMICOLON ? null : $this->Expression($x);
+					$this->t->mustMatch(OP_SEMICOLON);
+					$n->update = $this->t->peek() == OP_RIGHT_PAREN ? null : $this->Expression($x);
+				}
+
+				$this->t->mustMatch(OP_RIGHT_PAREN);
+				$n->body = $this->nest($x, $n);
+			return $n;
+
+			case KEYWORD_WHILE:
+			        $n = new JSNode($this->t);
+			        $n->isLoop = true;
+			        $n->condition = $this->ParenExpression($x);
+			        $n->body = $this->nest($x, $n);
+			return $n;
+
+			case KEYWORD_DO:
+				$n = new JSNode($this->t);
+				$n->isLoop = true;
+				$n->body = $this->nest($x, $n, KEYWORD_WHILE);
+				$n->condition = $this->ParenExpression($x);
+				if (!$x->ecmaStrictMode)
+				{
+					// <script language="JavaScript"> (without version hints) may need
+					// automatic semicolon insertion without a newline after do-while.
+					// See http://bugzilla.mozilla.org/show_bug.cgi?id=238945.
+					$this->t->match(OP_SEMICOLON);
+					return $n;
+				}
+			break;
+
+			case KEYWORD_BREAK:
+			case KEYWORD_CONTINUE:
+				$n = new JSNode($this->t);
+
+				if ($this->t->peekOnSameLine() == TOKEN_IDENTIFIER)
+				{
+					$this->t->get();
+					$n->label = $this->t->currentToken()->value;
+				}
+
+				$ss = $x->stmtStack;
+				$i = count($ss);
+				$label = $n->label;
+				if ($label)
+				{
+					do
+					{
+						if (--$i < 0)
+							throw $this->t->newSyntaxError('Label not found');
+					}
+					while ($ss[$i]->label != $label);
+				}
+				else
+				{
+					do
+					{
+						if (--$i < 0)
+							throw $this->t->newSyntaxError('Invalid ' . $tt);
+					}
+					while (!$ss[$i]->isLoop && ($tt != KEYWORD_BREAK || $ss[$i]->type != KEYWORD_SWITCH));
+				}
+
+				$n->target = $ss[$i];
+			break;
+
+			case KEYWORD_TRY:
+				$n = new JSNode($this->t);
+				$n->tryBlock = $this->Block($x);
+				$n->catchClauses = array();
+
+				while ($this->t->match(KEYWORD_CATCH))
+				{
+					$n2 = new JSNode($this->t);
+					$this->t->mustMatch(OP_LEFT_PAREN);
+					$n2->varName = $this->t->mustMatch(TOKEN_IDENTIFIER)->value;
+
+					if ($this->t->match(KEYWORD_IF))
+					{
+						if ($x->ecmaStrictMode)
+							throw $this->t->newSyntaxError('Illegal catch guard');
+
+						if (count($n->catchClauses) && !end($n->catchClauses)->guard)
+							throw $this->t->newSyntaxError('Guarded catch after unguarded');
+
+						$n2->guard = $this->Expression($x);
+					}
+					else
+					{
+						$n2->guard = null;
+					}
+
+					$this->t->mustMatch(OP_RIGHT_PAREN);
+					$n2->block = $this->Block($x);
+					array_push($n->catchClauses, $n2);
+				}
+
+				if ($this->t->match(KEYWORD_FINALLY))
+					$n->finallyBlock = $this->Block($x);
+
+				if (!count($n->catchClauses) && !$n->finallyBlock)
+					throw $this->t->newSyntaxError('Invalid try statement');
+			return $n;
+
+			case KEYWORD_CATCH:
+			case KEYWORD_FINALLY:
+				throw $this->t->newSyntaxError($tt + ' without preceding try');
+
+			case KEYWORD_THROW:
+				$n = new JSNode($this->t);
+				$n->value = $this->Expression($x);
+			break;
+
+			case KEYWORD_RETURN:
+				if (!$x->inFunction)
+					throw $this->t->newSyntaxError('Invalid return');
+
+				$n = new JSNode($this->t);
+				$tt = $this->t->peekOnSameLine();
+				if ($tt != TOKEN_END && $tt != TOKEN_NEWLINE && $tt != OP_SEMICOLON && $tt != OP_RIGHT_CURLY)
+					$n->value = $this->Expression($x);
+				else
+					$n->value = null;
+			break;
+
+			case KEYWORD_WITH:
+				$n = new JSNode($this->t);
+				$n->object = $this->ParenExpression($x);
+				$n->body = $this->nest($x, $n);
+			return $n;
+
+			case KEYWORD_VAR:
+			case KEYWORD_CONST:
+			        $n = $this->Variables($x);
+			break;
+
+			case TOKEN_CONDCOMMENT_START:
+			case TOKEN_CONDCOMMENT_END:
+				$n = new JSNode($this->t);
+			return $n;
+
+			case KEYWORD_DEBUGGER:
+				$n = new JSNode($this->t);
+			break;
+
+			case TOKEN_NEWLINE:
+			case OP_SEMICOLON:
+				$n = new JSNode($this->t, OP_SEMICOLON);
+				$n->expression = null;
+			return $n;
+
+			default:
+				if ($tt == TOKEN_IDENTIFIER)
+				{
+					$this->t->scanOperand = false;
+					$tt = $this->t->peek();
+					$this->t->scanOperand = true;
+					if ($tt == OP_COLON)
+					{
+						$label = $this->t->currentToken()->value;
+						$ss = $x->stmtStack;
+						for ($i = count($ss) - 1; $i >= 0; --$i)
+						{
+							if ($ss[$i]->label == $label)
+								throw $this->t->newSyntaxError('Duplicate label');
+						}
+
+						$this->t->get();
+						$n = new JSNode($this->t, JS_LABEL);
+						$n->label = $label;
+						$n->statement = $this->nest($x, $n);
+
+						return $n;
+					}
+				}
+
+				$n = new JSNode($this->t, OP_SEMICOLON);
+				$this->t->unget();
+				$n->expression = $this->Expression($x);
+				$n->end = $n->expression->end;
+			break;
+		}
+
+		if ($this->t->lineno == $this->t->currentToken()->lineno)
+		{
+			$tt = $this->t->peekOnSameLine();
+			if ($tt != TOKEN_END && $tt != TOKEN_NEWLINE && $tt != OP_SEMICOLON && $tt != OP_RIGHT_CURLY)
+				throw $this->t->newSyntaxError('Missing ; before statement');
+		}
+
+		$this->t->match(OP_SEMICOLON);
+
+		return $n;
+	}
+
+	private function FunctionDefinition($x, $requireName, $functionForm)
+	{
+		$f = new JSNode($this->t);
+
+		if ($f->type != KEYWORD_FUNCTION)
+			$f->type = ($f->value == 'get') ? JS_GETTER : JS_SETTER;
+
+		if ($this->t->match(TOKEN_IDENTIFIER))
+			$f->name = $this->t->currentToken()->value;
+		elseif ($requireName)
+			throw $this->t->newSyntaxError('Missing function identifier');
+
+		$this->t->mustMatch(OP_LEFT_PAREN);
+			$f->params = array();
+
+		while (($tt = $this->t->get()) != OP_RIGHT_PAREN)
+		{
+			if ($tt != TOKEN_IDENTIFIER)
+				throw $this->t->newSyntaxError('Missing formal parameter');
+
+			array_push($f->params, $this->t->currentToken()->value);
+
+			if ($this->t->peek() != OP_RIGHT_PAREN)
+				$this->t->mustMatch(OP_COMMA);
+		}
+
+		$this->t->mustMatch(OP_LEFT_CURLY);
+
+		$x2 = new JSCompilerContext(true);
+		$f->body = $this->Script($x2);
+
+		$this->t->mustMatch(OP_RIGHT_CURLY);
+		$f->end = $this->t->currentToken()->end;
+
+		$f->functionForm = $functionForm;
+		if ($functionForm == DECLARED_FORM)
+			array_push($x->funDecls, $f);
+
+		return $f;
+	}
+
+	private function Variables($x)
+	{
+		$n = new JSNode($this->t);
+
+		do
+		{
+			$this->t->mustMatch(TOKEN_IDENTIFIER);
+
+			$n2 = new JSNode($this->t);
+			$n2->name = $n2->value;
+
+			if ($this->t->match(OP_ASSIGN))
+			{
+				if ($this->t->currentToken()->assignOp)
+					throw $this->t->newSyntaxError('Invalid variable initialization');
+
+				$n2->initializer = $this->Expression($x, OP_COMMA);
+			}
+
+			$n2->readOnly = $n->type == KEYWORD_CONST;
+
+			$n->addNode($n2);
+			array_push($x->varDecls, $n2);
+		}
+		while ($this->t->match(OP_COMMA));
+
+		return $n;
+	}
+
+	private function Expression($x, $stop=false)
+	{
+		$operators = array();
+		$operands = array();
+		$n = false;
+
+		$bl = $x->bracketLevel;
+		$cl = $x->curlyLevel;
+		$pl = $x->parenLevel;
+		$hl = $x->hookLevel;
+
+		while (($tt = $this->t->get()) != TOKEN_END)
+		{
+			if ($tt == $stop &&
+				$x->bracketLevel == $bl &&
+				$x->curlyLevel == $cl &&
+				$x->parenLevel == $pl &&
+				$x->hookLevel == $hl
+			)
+			{
+				// Stop only if tt matches the optional stop parameter, and that
+				// token is not quoted by some kind of bracket.
+				break;
+			}
+
+			switch ($tt)
+			{
+				case OP_SEMICOLON:
+					// NB: cannot be empty, Statement handled that.
+					break 2;
+
+				case OP_HOOK:
+					if ($this->t->scanOperand)
+						break 2;
+
+					while (	!empty($operators) &&
+						$this->opPrecedence[end($operators)->type] > $this->opPrecedence[$tt]
+					)
+						$this->reduce($operators, $operands);
+
+					array_push($operators, new JSNode($this->t));
+
+					++$x->hookLevel;
+					$this->t->scanOperand = true;
+					$n = $this->Expression($x);
+
+					if (!$this->t->match(OP_COLON))
+						break 2;
+
+					--$x->hookLevel;
+					array_push($operands, $n);
+				break;
+
+				case OP_COLON:
+					if ($x->hookLevel)
+						break 2;
+
+					throw $this->t->newSyntaxError('Invalid label');
+				break;
+
+				case OP_ASSIGN:
+					if ($this->t->scanOperand)
+						break 2;
+
+					// Use >, not >=, for right-associative ASSIGN
+					while (	!empty($operators) &&
+						$this->opPrecedence[end($operators)->type] > $this->opPrecedence[$tt]
+					)
+						$this->reduce($operators, $operands);
+
+					array_push($operators, new JSNode($this->t));
+					end($operands)->assignOp = $this->t->currentToken()->assignOp;
+					$this->t->scanOperand = true;
+				break;
+
+				case KEYWORD_IN:
+					// An in operator should not be parsed if we're parsing the head of
+					// a for (...) loop, unless it is in the then part of a conditional
+					// expression, or parenthesized somehow.
+					if ($x->inForLoopInit && !$x->hookLevel &&
+						!$x->bracketLevel && !$x->curlyLevel &&
+						!$x->parenLevel
+					)
+						break 2;
+				// FALL THROUGH
+				case OP_COMMA:
+					// A comma operator should not be parsed if we're parsing the then part
+					// of a conditional expression unless it's parenthesized somehow.
+					if ($tt == OP_COMMA && $x->hookLevel &&
+						!$x->bracketLevel && !$x->curlyLevel &&
+						!$x->parenLevel
+					)
+						break 2;
+				// Treat comma as left-associative so reduce can fold left-heavy
+				// COMMA trees into a single array.
+				// FALL THROUGH
+				case OP_OR:
+				case OP_AND:
+				case OP_BITWISE_OR:
+				case OP_BITWISE_XOR:
+				case OP_BITWISE_AND:
+				case OP_EQ: case OP_NE: case OP_STRICT_EQ: case OP_STRICT_NE:
+				case OP_LT: case OP_LE: case OP_GE: case OP_GT:
+				case KEYWORD_INSTANCEOF:
+				case OP_LSH: case OP_RSH: case OP_URSH:
+				case OP_PLUS: case OP_MINUS:
+				case OP_MUL: case OP_DIV: case OP_MOD:
+				case OP_DOT:
+					if ($this->t->scanOperand)
+						break 2;
+
+					while (	!empty($operators) &&
+						$this->opPrecedence[end($operators)->type] >= $this->opPrecedence[$tt]
+					)
+						$this->reduce($operators, $operands);
+
+					if ($tt == OP_DOT)
+					{
+						$this->t->mustMatch(TOKEN_IDENTIFIER);
+						array_push($operands, new JSNode($this->t, OP_DOT, array_pop($operands), new JSNode($this->t)));
+					}
+					else
+					{
+						array_push($operators, new JSNode($this->t));
+						$this->t->scanOperand = true;
+					}
+				break;
+
+				case KEYWORD_DELETE: case KEYWORD_VOID: case KEYWORD_TYPEOF:
+				case OP_NOT: case OP_BITWISE_NOT: case OP_UNARY_PLUS: case OP_UNARY_MINUS:
+				case KEYWORD_NEW:
+					if (!$this->t->scanOperand)
+						break 2;
+
+					array_push($operators, new JSNode($this->t));
+				break;
+
+				case OP_INCREMENT: case OP_DECREMENT:
+					if ($this->t->scanOperand)
+					{
+						array_push($operators, new JSNode($this->t));  // prefix increment or decrement
+					}
+					else
+					{
+						// Don't cross a line boundary for postfix {in,de}crement.
+						$t = $this->t->tokens[($this->t->tokenIndex + $this->t->lookahead - 1) & 3];
+						if ($t && $t->lineno != $this->t->lineno)
+							break 2;
+
+						if (!empty($operators))
+						{
+							// Use >, not >=, so postfix has higher precedence than prefix.
+							while ($this->opPrecedence[end($operators)->type] > $this->opPrecedence[$tt])
+								$this->reduce($operators, $operands);
+						}
+
+						$n = new JSNode($this->t, $tt, array_pop($operands));
+						$n->postfix = true;
+						array_push($operands, $n);
+					}
+				break;
+
+				case KEYWORD_FUNCTION:
+					if (!$this->t->scanOperand)
+						break 2;
+
+					array_push($operands, $this->FunctionDefinition($x, false, EXPRESSED_FORM));
+					$this->t->scanOperand = false;
+				break;
+
+				case KEYWORD_NULL: case KEYWORD_THIS: case KEYWORD_TRUE: case KEYWORD_FALSE:
+				case TOKEN_IDENTIFIER: case TOKEN_NUMBER: case TOKEN_STRING: case TOKEN_REGEXP:
+					if (!$this->t->scanOperand)
+						break 2;
+
+					array_push($operands, new JSNode($this->t));
+					$this->t->scanOperand = false;
+				break;
+
+				case TOKEN_CONDCOMMENT_START:
+				case TOKEN_CONDCOMMENT_END:
+					if ($this->t->scanOperand)
+						array_push($operators, new JSNode($this->t));
+					else
+						array_push($operands, new JSNode($this->t));
+				break;
+
+				case OP_LEFT_BRACKET:
+					if ($this->t->scanOperand)
+					{
+						// Array initialiser.  Parse using recursive descent, as the
+						// sub-grammar here is not an operator grammar.
+						$n = new JSNode($this->t, JS_ARRAY_INIT);
+						while (($tt = $this->t->peek()) != OP_RIGHT_BRACKET)
+						{
+							if ($tt == OP_COMMA)
+							{
+								$this->t->get();
+								$n->addNode(null);
+								continue;
+							}
+
+							$n->addNode($this->Expression($x, OP_COMMA));
+							if (!$this->t->match(OP_COMMA))
+								break;
+						}
+
+						$this->t->mustMatch(OP_RIGHT_BRACKET);
+						array_push($operands, $n);
+						$this->t->scanOperand = false;
+					}
+					else
+					{
+						// Property indexing operator.
+						array_push($operators, new JSNode($this->t, JS_INDEX));
+						$this->t->scanOperand = true;
+						++$x->bracketLevel;
+					}
+				break;
+
+				case OP_RIGHT_BRACKET:
+					if ($this->t->scanOperand || $x->bracketLevel == $bl)
+						break 2;
+
+					while ($this->reduce($operators, $operands)->type != JS_INDEX)
+						continue;
+
+					--$x->bracketLevel;
+				break;
+
+				case OP_LEFT_CURLY:
+					if (!$this->t->scanOperand)
+						break 2;
+
+					// Object initialiser.  As for array initialisers (see above),
+					// parse using recursive descent.
+					++$x->curlyLevel;
+					$n = new JSNode($this->t, JS_OBJECT_INIT);
+					while (!$this->t->match(OP_RIGHT_CURLY))
+					{
+						do
+						{
+							$tt = $this->t->get();
+							$tv = $this->t->currentToken()->value;
+							if (($tv == 'get' || $tv == 'set') && $this->t->peek() == TOKEN_IDENTIFIER)
+							{
+								if ($x->ecmaStrictMode)
+									throw $this->t->newSyntaxError('Illegal property accessor');
+
+								$n->addNode($this->FunctionDefinition($x, true, EXPRESSED_FORM));
+							}
+							else
+							{
+								switch ($tt)
+								{
+									case TOKEN_IDENTIFIER:
+									case TOKEN_NUMBER:
+									case TOKEN_STRING:
+										$id = new JSNode($this->t);
+									break;
+
+									case OP_RIGHT_CURLY:
+										if ($x->ecmaStrictMode)
+											throw $this->t->newSyntaxError('Illegal trailing ,');
+									break 3;
+
+									default:
+										throw $this->t->newSyntaxError('Invalid property name');
+								}
+
+								$this->t->mustMatch(OP_COLON);
+								$n->addNode(new JSNode($this->t, JS_PROPERTY_INIT, $id, $this->Expression($x, OP_COMMA)));
+							}
+						}
+						while ($this->t->match(OP_COMMA));
+
+						$this->t->mustMatch(OP_RIGHT_CURLY);
+						break;
+					}
+
+					array_push($operands, $n);
+					$this->t->scanOperand = false;
+					--$x->curlyLevel;
+				break;
+
+				case OP_RIGHT_CURLY:
+					if (!$this->t->scanOperand && $x->curlyLevel != $cl)
+						throw new Exception('PANIC: right curly botch');
+				break 2;
+
+				case OP_LEFT_PAREN:
+					if ($this->t->scanOperand)
+					{
+						array_push($operators, new JSNode($this->t, JS_GROUP));
+					}
+					else
+					{
+						while (	!empty($operators) &&
+							$this->opPrecedence[end($operators)->type] > $this->opPrecedence[KEYWORD_NEW]
+						)
+							$this->reduce($operators, $operands);
+
+						// Handle () now, to regularize the n-ary case for n > 0.
+						// We must set scanOperand in case there are arguments and
+						// the first one is a regexp or unary+/-.
+						$n = end($operators);
+						$this->t->scanOperand = true;
+						if ($this->t->match(OP_RIGHT_PAREN))
+						{
+							if ($n && $n->type == KEYWORD_NEW)
+							{
+								array_pop($operators);
+								$n->addNode(array_pop($operands));
+							}
+							else
+							{
+								$n = new JSNode($this->t, JS_CALL, array_pop($operands), new JSNode($this->t, JS_LIST));
+							}
+
+							array_push($operands, $n);
+							$this->t->scanOperand = false;
+							break;
+						}
+
+						if ($n && $n->type == KEYWORD_NEW)
+							$n->type = JS_NEW_WITH_ARGS;
+						else
+							array_push($operators, new JSNode($this->t, JS_CALL));
+					}
+
+					++$x->parenLevel;
+				break;
+
+				case OP_RIGHT_PAREN:
+					if ($this->t->scanOperand || $x->parenLevel == $pl)
+						break 2;
+
+					while (($tt = $this->reduce($operators, $operands)->type) != JS_GROUP &&
+						$tt != JS_CALL && $tt != JS_NEW_WITH_ARGS
+					)
+					{
+						continue;
+					}
+
+					if ($tt != JS_GROUP)
+					{
+						$n = end($operands);
+						if ($n->treeNodes[1]->type != OP_COMMA)
+							$n->treeNodes[1] = new JSNode($this->t, JS_LIST, $n->treeNodes[1]);
+						else
+							$n->treeNodes[1]->type = JS_LIST;
+					}
+
+					--$x->parenLevel;
+				break;
+
+				// Automatic semicolon insertion means we may scan across a newline
+				// and into the beginning of another statement.  If so, break out of
+				// the while loop and let the t.scanOperand logic handle errors.
+				default:
+					break 2;
+			}
+		}
+
+		if ($x->hookLevel != $hl)
+			throw $this->t->newSyntaxError('Missing : in conditional expression');
+
+		if ($x->parenLevel != $pl)
+			throw $this->t->newSyntaxError('Missing ) in parenthetical');
+
+		if ($x->bracketLevel != $bl)
+			throw $this->t->newSyntaxError('Missing ] in index expression');
+
+		if ($this->t->scanOperand)
+			throw $this->t->newSyntaxError('Missing operand');
+
+		// Resume default mode, scanning for operands, not operators.
+		$this->t->scanOperand = true;
+		$this->t->unget();
+
+		while (count($operators))
+			$this->reduce($operators, $operands);
+
+		return array_pop($operands);
+	}
+
+	private function ParenExpression($x)
+	{
+		$this->t->mustMatch(OP_LEFT_PAREN);
+		$n = $this->Expression($x);
+		$this->t->mustMatch(OP_RIGHT_PAREN);
+
+		return $n;
+	}
+
+	// Statement stack and nested statement handler.
+	private function nest($x, $node, $end = false)
+	{
+		array_push($x->stmtStack, $node);
+		$n = $this->statement($x);
+		array_pop($x->stmtStack);
+
+		if ($end)
+			$this->t->mustMatch($end);
+
+		return $n;
+	}
+
+	private function reduce(&$operators, &$operands)
+	{
+		$n = array_pop($operators);
+		$op = $n->type;
+		$arity = $this->opArity[$op];
+		$c = count($operands);
+		if ($arity == -2)
+		{
+			// Flatten left-associative trees
+			if ($c >= 2)
+			{
+				$left = $operands[$c - 2];
+				if ($left->type == $op)
+				{
+					$right = array_pop($operands);
+					$left->addNode($right);
+					return $left;
+				}
+			}
+			$arity = 2;
+		}
+
+		// Always use push to add operands to n, to update start and end
+		$a = array_splice($operands, $c - $arity);
+		for ($i = 0; $i < $arity; $i++)
+			$n->addNode($a[$i]);
+
+		// Include closing bracket or postfix operator in [start,end]
+		$te = $this->t->currentToken()->end;
+		if ($n->end < $te)
+			$n->end = $te;
+
+		array_push($operands, $n);
+
+		return $n;
+	}
+}
+
+class JSCompilerContext
+{
+	public $inFunction = false;
+	public $inForLoopInit = false;
+	public $ecmaStrictMode = false;
+	public $bracketLevel = 0;
+	public $curlyLevel = 0;
+	public $parenLevel = 0;
+	public $hookLevel = 0;
+
+	public $stmtStack = array();
+	public $funDecls = array();
+	public $varDecls = array();
+
+	public function __construct($inFunction)
+	{
+		$this->inFunction = $inFunction;
+	}
+}
+
+class JSNode
+{
+	private $type;
+	private $value;
+	private $lineno;
+	private $start;
+	private $end;
+
+	public $treeNodes = array();
+	public $funDecls = array();
+	public $varDecls = array();
+
+	public function __construct($t, $type=0)
+	{
+		if ($token = $t->currentToken())
+		{
+			$this->type = $type ? $type : $token->type;
+			$this->value = $token->value;
+			$this->lineno = $token->lineno;
+			$this->start = $token->start;
+			$this->end = $token->end;
+		}
+		else
+		{
+			$this->type = $type;
+			$this->lineno = $t->lineno;
+		}
+
+		if (($numargs = func_num_args()) > 2)
+		{
+			$args = func_get_args();
+			for ($i = 2; $i < $numargs; $i++)
+				$this->addNode($args[$i]);
+		}
+	}
+
+	// we don't want to bloat our object with all kind of specific properties, so we use overloading
+	public function __set($name, $value)
+	{
+		$this->$name = $value;
+	}
+
+	public function __get($name)
+	{
+		if (isset($this->$name))
+			return $this->$name;
+
+		return null;
+	}
+
+	public function addNode($node)
+	{
+		if ($node !== null)
+		{
+			if ($node->start < $this->start)
+				$this->start = $node->start;
+			if ($this->end < $node->end)
+				$this->end = $node->end;
+		}
+
+		$this->treeNodes[] = $node;
+	}
+}
+
+class JSTokenizer
+{
+	private $cursor = 0;
+	private $source;
+
+	public $tokens = array();
+	public $tokenIndex = 0;
+	public $lookahead = 0;
+	public $scanNewlines = false;
+	public $scanOperand = true;
+
+	public $filename;
+	public $lineno;
+
+	private $keywords = array(
+		'break',
+		'case', 'catch', 'const', 'continue',
+		'debugger', 'default', 'delete', 'do',
+		'else', 'enum',
+		'false', 'finally', 'for', 'function',
+		'if', 'in', 'instanceof',
+		'new', 'null',
+		'return',
+		'switch',
+		'this', 'throw', 'true', 'try', 'typeof',
+		'var', 'void',
+		'while', 'with'
+	);
+
+	private $opTypeNames = array(
+		';', ',', '?', ':', '||', '&&', '|', '^',
+		'&', '===', '==', '=', '!==', '!=', '<<', '<=',
+		'<', '>>>', '>>', '>=', '>', '++', '--', '+',
+		'-', '*', '/', '%', '!', '~', '.', '[',
+		']', '{', '}', '(', ')', '@*/'
+	);
+
+	private $assignOps = array('|', '^', '&', '<<', '>>', '>>>', '+', '-', '*', '/', '%');
+	private $opRegExp;
+
+	public function __construct()
+	{
+		$this->opRegExp = '#^(' . implode('|', array_map('preg_quote', $this->opTypeNames)) . ')#';
+	}
+
+	public function init($source, $filename = '', $lineno = 1)
+	{
+		$this->source = $source;
+		$this->filename = $filename ? $filename : '[inline]';
+		$this->lineno = $lineno;
+
+		$this->cursor = 0;
+		$this->tokens = array();
+		$this->tokenIndex = 0;
+		$this->lookahead = 0;
+		$this->scanNewlines = false;
+		$this->scanOperand = true;
+	}
+
+	public function getInput($chunksize)
+	{
+		if ($chunksize)
+			return substr($this->source, $this->cursor, $chunksize);
+
+		return substr($this->source, $this->cursor);
+	}
+
+	public function isDone()
+	{
+		return $this->peek() == TOKEN_END;
+	}
+
+	public function match($tt)
+	{
+		return $this->get() == $tt || $this->unget();
+	}
+
+	public function mustMatch($tt)
+	{
+	        if (!$this->match($tt))
+			throw $this->newSyntaxError('Unexpected token; token ' . $tt . ' expected');
+
+		return $this->currentToken();
+	}
+
+	public function peek()
+	{
+		if ($this->lookahead)
+		{
+			$next = $this->tokens[($this->tokenIndex + $this->lookahead) & 3];
+			if ($this->scanNewlines && $next->lineno != $this->lineno)
+				$tt = TOKEN_NEWLINE;
+			else
+				$tt = $next->type;
+		}
+		else
+		{
+			$tt = $this->get();
+			$this->unget();
+		}
+
+		return $tt;
+	}
+
+	public function peekOnSameLine()
+	{
+		$this->scanNewlines = true;
+		$tt = $this->peek();
+		$this->scanNewlines = false;
+
+		return $tt;
+	}
+
+	public function currentToken()
+	{
+		if (!empty($this->tokens))
+			return $this->tokens[$this->tokenIndex];
+	}
+
+	public function get($chunksize = 1000)
+	{
+		while($this->lookahead)
+		{
+			$this->lookahead--;
+			$this->tokenIndex = ($this->tokenIndex + 1) & 3;
+			$token = $this->tokens[$this->tokenIndex];
+			if ($token->type != TOKEN_NEWLINE || $this->scanNewlines)
+				return $token->type;
+		}
+
+		$conditional_comment = false;
+
+		// strip whitespace and comments
+		while(true)
+		{
+			$input = $this->getInput($chunksize);
+
+			// whitespace handling; gobble up \r as well (effectively we don't have support for MAC newlines!)
+			$re = $this->scanNewlines ? '/^[ \r\t]+/' : '/^\s+/';
+			if (preg_match($re, $input, $match))
+			{
+				$spaces = $match[0];
+				$spacelen = strlen($spaces);
+				$this->cursor += $spacelen;
+				if (!$this->scanNewlines)
+					$this->lineno += substr_count($spaces, "\n");
+
+				if ($spacelen == $chunksize)
+					continue; // complete chunk contained whitespace
+
+				$input = $this->getInput($chunksize);
+				if ($input == '' || $input[0] != '/')
+					break;
+			}
+
+			// Comments
+			if (!preg_match('/^\/(?:\*(@(?:cc_on|if|elif|else|end))?.*?\*\/|\/[^\n]*)/s', $input, $match))
+			{
+				if (!$chunksize)
+					break;
+
+				// retry with a full chunk fetch; this also prevents breakage of long regular expressions (which will never match a comment)
+				$chunksize = null;
+				continue;
+			}
+
+			// check if this is a conditional (JScript) comment
+			if (!empty($match[1]))
+			{
+				$match[0] = '/*' . $match[1];
+				$conditional_comment = true;
+				break;
+			}
+			else
+			{
+				$this->cursor += strlen($match[0]);
+				$this->lineno += substr_count($match[0], "\n");
+			}
+		}
+
+		if ($input == '')
+		{
+			$tt = TOKEN_END;
+			$match = array('');
+		}
+		elseif ($conditional_comment)
+		{
+			$tt = TOKEN_CONDCOMMENT_START;
+		}
+		else
+		{
+			switch ($input[0])
+			{
+				case '0':
+					// hexadecimal
+					if (($input[1] == 'x' || $input[1] == 'X') && preg_match('/^0x[0-9a-f]+/i', $input, $match))
+					{
+						$tt = TOKEN_NUMBER;
+						break;
+					}
+				// FALL THROUGH
+
+				case '1': case '2': case '3': case '4': case '5':
+				case '6': case '7': case '8': case '9':
+					// should always match
+					preg_match('/^\d+(?:\.\d*)?(?:[eE][-+]?\d+)?/', $input, $match);
+					$tt = TOKEN_NUMBER;
+				break;
+
+				case "'":
+					if (preg_match('/^\'(?:[^\\\\\'\r\n]++|\\\\(?:.|\r?\n))*\'/', $input, $match))
+					{
+						$tt = TOKEN_STRING;
+					}
+					else
+					{
+						if ($chunksize)
+							return $this->get(null); // retry with a full chunk fetch
+
+						throw $this->newSyntaxError('Unterminated string literal');
+					}
+				break;
+
+				case '"':
+					if (preg_match('/^"(?:[^\\\\"\r\n]++|\\\\(?:.|\r?\n))*"/', $input, $match))
+					{
+						$tt = TOKEN_STRING;
+					}
+					else
+					{
+						if ($chunksize)
+							return $this->get(null); // retry with a full chunk fetch
+
+						throw $this->newSyntaxError('Unterminated string literal');
+					}
+				break;
+
+				case '/':
+					if ($this->scanOperand && preg_match('/^\/((?:\\\\.|\[(?:\\\\.|[^\]])*\]|[^\/])+)\/([gimy]*)/', $input, $match))
+					{
+						$tt = TOKEN_REGEXP;
+						break;
+					}
+				// FALL THROUGH
+
+				case '|':
+				case '^':
+				case '&':
+				case '<':
+				case '>':
+				case '+':
+				case '-':
+				case '*':
+				case '%':
+				case '=':
+				case '!':
+					// should always match
+					preg_match($this->opRegExp, $input, $match);
+					$op = $match[0];
+					if (in_array($op, $this->assignOps) && $input[strlen($op)] == '=')
+					{
+						$tt = OP_ASSIGN;
+						$match[0] .= '=';
+					}
+					else
+					{
+						$tt = $op;
+						if ($this->scanOperand)
+						{
+							if ($op == OP_PLUS)
+								$tt = OP_UNARY_PLUS;
+							elseif ($op == OP_MINUS)
+								$tt = OP_UNARY_MINUS;
+						}
+						$op = null;
+					}
+				break;
+
+				case '.':
+					if (preg_match('/^\.\d+(?:[eE][-+]?\d+)?/', $input, $match))
+					{
+						$tt = TOKEN_NUMBER;
+						break;
+					}
+				// FALL THROUGH
+
+				case ';':
+				case ',':
+				case '?':
+				case ':':
+				case '~':
+				case '[':
+				case ']':
+				case '{':
+				case '}':
+				case '(':
+				case ')':
+					// these are all single
+					$match = array($input[0]);
+					$tt = $input[0];
+				break;
+
+				case '@':
+					// check end of conditional comment
+					if (substr($input, 0, 3) == '@*/')
+					{
+						$match = array('@*/');
+						$tt = TOKEN_CONDCOMMENT_END;
+					}
+					else
+						throw $this->newSyntaxError('Illegal token');
+				break;
+
+				case "\n":
+					if ($this->scanNewlines)
+					{
+						$match = array("\n");
+						$tt = TOKEN_NEWLINE;
+					}
+					else
+						throw $this->newSyntaxError('Illegal token');
+				break;
+
+				default:
+					// FIXME: add support for unicode and unicode escape sequence \uHHHH
+					if (preg_match('/^[$\w]+/', $input, $match))
+					{
+						$tt = in_array($match[0], $this->keywords) ? $match[0] : TOKEN_IDENTIFIER;
+					}
+					else
+						throw $this->newSyntaxError('Illegal token');
+			}
+		}
+
+		$this->tokenIndex = ($this->tokenIndex + 1) & 3;
+
+		if (!isset($this->tokens[$this->tokenIndex]))
+			$this->tokens[$this->tokenIndex] = new JSToken();
+
+		$token = $this->tokens[$this->tokenIndex];
+		$token->type = $tt;
+
+		if ($tt == OP_ASSIGN)
+			$token->assignOp = $op;
+
+		$token->start = $this->cursor;
+
+		$token->value = $match[0];
+		$this->cursor += strlen($match[0]);
+
+		$token->end = $this->cursor;
+		$token->lineno = $this->lineno;
+
+		return $tt;
+	}
+
+	public function unget()
+	{
+		if (++$this->lookahead == 4)
+			throw $this->newSyntaxError('PANIC: too much lookahead!');
+
+		$this->tokenIndex = ($this->tokenIndex - 1) & 3;
+	}
+
+	public function newSyntaxError($m)
+	{
+		return new Exception('Parse error: ' . $m . ' in file \'' . $this->filename . '\' on line ' . $this->lineno);
+	}
+}
+
+class JSToken
+{
+	public $type;
+	public $value;
+	public $start;
+	public $end;
+	public $lineno;
+	public $assignOp;
+}
diff --git a/inc/lib/minify/Minify.php b/inc/lib/minify/Minify.php
new file mode 100755
index 00000000..9634f221
--- /dev/null
+++ b/inc/lib/minify/Minify.php
@@ -0,0 +1,617 @@
+<?php
+/**
+ * Class Minify  
+ * @package Minify
+ */
+
+/**
+ * Minify_Source
+ */
+require_once 'Minify/Source.php';
+ 
+/**
+ * Minify - Combines, minifies, and caches JavaScript and CSS files on demand.
+ *
+ * See README for usage instructions (for now).
+ *
+ * This library was inspired by {@link mailto:flashkot@mail.ru jscsscomp by Maxim Martynyuk}
+ * and by the article {@link http://www.hunlock.com/blogs/Supercharged_Javascript "Supercharged JavaScript" by Patrick Hunlock}.
+ *
+ * Requires PHP 5.1.0.
+ * Tested on PHP 5.1.6.
+ *
+ * @package Minify
+ * @author Ryan Grove <ryan@wonko.com>
+ * @author Stephen Clay <steve@mrclay.org>
+ * @copyright 2008 Ryan Grove, Stephen Clay. All rights reserved.
+ * @license http://opensource.org/licenses/bsd-license.php  New BSD License
+ * @link http://code.google.com/p/minify/
+ */
+class Minify {
+    
+    const VERSION = '2.1.5';
+    const TYPE_CSS = 'text/css';
+    const TYPE_HTML = 'text/html';
+    // there is some debate over the ideal JS Content-Type, but this is the
+    // Apache default and what Yahoo! uses..
+    const TYPE_JS = 'application/x-javascript';
+    const URL_DEBUG = 'http://code.google.com/p/minify/wiki/Debugging';
+    
+    /**
+     * How many hours behind are the file modification times of uploaded files?
+     * 
+     * If you upload files from Windows to a non-Windows server, Windows may report
+     * incorrect mtimes for the files. Immediately after modifying and uploading a 
+     * file, use the touch command to update the mtime on the server. If the mtime 
+     * jumps ahead by a number of hours, set this variable to that number. If the mtime 
+     * moves back, this should not be needed.
+     *
+     * @var int $uploaderHoursBehind
+     */
+    public static $uploaderHoursBehind = 0;
+    
+    /**
+     * If this string is not empty AND the serve() option 'bubbleCssImports' is
+     * NOT set, then serve() will check CSS files for @import declarations that
+     * appear too late in the combined stylesheet. If found, serve() will prepend
+     * the output with this warning.
+     *
+     * @var string $importWarning
+     */
+    public static $importWarning = "/* See http://code.google.com/p/minify/wiki/CommonProblems#@imports_can_appear_in_invalid_locations_in_combined_CSS_files */\n";
+
+    /**
+     * Has the DOCUMENT_ROOT been set in user code?
+     * 
+     * @var bool
+     */
+    public static $isDocRootSet = false;
+
+    /**
+     * Specify a cache object (with identical interface as Minify_Cache_File) or
+     * a path to use with Minify_Cache_File.
+     * 
+     * If not called, Minify will not use a cache and, for each 200 response, will 
+     * need to recombine files, minify and encode the output.
+     *
+     * @param mixed $cache object with identical interface as Minify_Cache_File or
+     * a directory path, or null to disable caching. (default = '')
+     * 
+     * @param bool $fileLocking (default = true) This only applies if the first
+     * parameter is a string.
+     *
+     * @return null
+     */
+    public static function setCache($cache = '', $fileLocking = true)
+    {
+        if (is_string($cache)) {
+            require_once 'Minify/Cache/File.php';
+            self::$_cache = new Minify_Cache_File($cache, $fileLocking);
+        } else {
+            self::$_cache = $cache;
+        }
+    }
+    
+    /**
+     * Serve a request for a minified file. 
+     * 
+     * Here are the available options and defaults in the base controller:
+     * 
+     * 'isPublic' : send "public" instead of "private" in Cache-Control 
+     * headers, allowing shared caches to cache the output. (default true)
+     * 
+     * 'quiet' : set to true to have serve() return an array rather than sending
+     * any headers/output (default false)
+     * 
+     * 'encodeOutput' : set to false to disable content encoding, and not send
+     * the Vary header (default true)
+     * 
+     * 'encodeMethod' : generally you should let this be determined by 
+     * HTTP_Encoder (leave null), but you can force a particular encoding
+     * to be returned, by setting this to 'gzip' or '' (no encoding)
+     * 
+     * 'encodeLevel' : level of encoding compression (0 to 9, default 9)
+     * 
+     * 'contentTypeCharset' : appended to the Content-Type header sent. Set to a falsey
+     * value to remove. (default 'utf-8')  
+     * 
+     * 'maxAge' : set this to the number of seconds the client should use its cache
+     * before revalidating with the server. This sets Cache-Control: max-age and the
+     * Expires header. Unlike the old 'setExpires' setting, this setting will NOT
+     * prevent conditional GETs. Note this has nothing to do with server-side caching.
+     * 
+     * 'rewriteCssUris' : If true, serve() will automatically set the 'currentDir'
+     * minifier option to enable URI rewriting in CSS files (default true)
+     * 
+     * 'bubbleCssImports' : If true, all @import declarations in combined CSS
+     * files will be move to the top. Note this may alter effective CSS values
+     * due to a change in order. (default false)
+     * 
+     * 'debug' : set to true to minify all sources with the 'Lines' controller, which
+     * eases the debugging of combined files. This also prevents 304 responses.
+     * @see Minify_Lines::minify()
+     * 
+     * 'minifiers' : to override Minify's default choice of minifier function for 
+     * a particular content-type, specify your callback under the key of the 
+     * content-type:
+     * <code>
+     * // call customCssMinifier($css) for all CSS minification
+     * $options['minifiers'][Minify::TYPE_CSS] = 'customCssMinifier';
+     * 
+     * // don't minify Javascript at all
+     * $options['minifiers'][Minify::TYPE_JS] = '';
+     * </code>
+     * 
+     * 'minifierOptions' : to send options to the minifier function, specify your options
+     * under the key of the content-type. E.g. To send the CSS minifier an option: 
+     * <code>
+     * // give CSS minifier array('optionName' => 'optionValue') as 2nd argument 
+     * $options['minifierOptions'][Minify::TYPE_CSS]['optionName'] = 'optionValue';
+     * </code>
+     * 
+     * 'contentType' : (optional) this is only needed if your file extension is not 
+     * js/css/html. The given content-type will be sent regardless of source file
+     * extension, so this should not be used in a Groups config with other
+     * Javascript/CSS files.
+     * 
+     * Any controller options are documented in that controller's setupSources() method.
+     * 
+     * @param mixed $controller instance of subclass of Minify_Controller_Base or string
+     * name of controller. E.g. 'Files'
+     * 
+     * @param array $options controller/serve options
+     * 
+     * @return mixed null, or, if the 'quiet' option is set to true, an array
+     * with keys "success" (bool), "statusCode" (int), "content" (string), and
+     * "headers" (array).
+     */
+    public static function serve($controller, $options = array())
+    {
+        if (! self::$isDocRootSet && 0 === stripos(PHP_OS, 'win')) {
+            self::setDocRoot();
+        }
+
+        if (is_string($controller)) {
+            // make $controller into object
+            $class = 'Minify_Controller_' . $controller;
+            if (! class_exists($class, false)) {
+                require_once "Minify/Controller/" 
+                    . str_replace('_', '/', $controller) . ".php";    
+            }
+            $controller = new $class();
+            /* @var Minify_Controller_Base $controller */
+        }
+        
+        // set up controller sources and mix remaining options with
+        // controller defaults
+        $options = $controller->setupSources($options);
+        $options = $controller->analyzeSources($options);
+        self::$_options = $controller->mixInDefaultOptions($options);
+        
+        // check request validity
+        if (! $controller->sources) {
+            // invalid request!
+            if (! self::$_options['quiet']) {
+                self::_errorExit(self::$_options['badRequestHeader'], self::URL_DEBUG);
+            } else {
+                list(,$statusCode) = explode(' ', self::$_options['badRequestHeader']);
+                return array(
+                    'success' => false
+                    ,'statusCode' => (int)$statusCode
+                    ,'content' => ''
+                    ,'headers' => array()
+                );
+            }
+        }
+        
+        self::$_controller = $controller;
+        
+        if (self::$_options['debug']) {
+            self::_setupDebug($controller->sources);
+            self::$_options['maxAge'] = 0;
+        }
+        
+        // determine encoding
+        if (self::$_options['encodeOutput']) {
+            $sendVary = true;
+            if (self::$_options['encodeMethod'] !== null) {
+                // controller specifically requested this
+                $contentEncoding = self::$_options['encodeMethod'];
+            } else {
+                // sniff request header
+                require_once 'HTTP/Encoder.php';
+                // depending on what the client accepts, $contentEncoding may be 
+                // 'x-gzip' while our internal encodeMethod is 'gzip'. Calling
+                // getAcceptedEncoding(false, false) leaves out compress and deflate as options.
+                list(self::$_options['encodeMethod'], $contentEncoding) = HTTP_Encoder::getAcceptedEncoding(false, false);
+                $sendVary = ! HTTP_Encoder::isBuggyIe();
+            }
+        } else {
+            self::$_options['encodeMethod'] = ''; // identity (no encoding)
+        }
+        
+        // check client cache
+        require_once 'HTTP/ConditionalGet.php';
+        $cgOptions = array(
+            'lastModifiedTime' => self::$_options['lastModifiedTime']
+            ,'isPublic' => self::$_options['isPublic']
+            ,'encoding' => self::$_options['encodeMethod']
+        );
+        if (self::$_options['maxAge'] > 0) {
+            $cgOptions['maxAge'] = self::$_options['maxAge'];
+        } elseif (self::$_options['debug']) {
+            $cgOptions['invalidate'] = true;
+        }
+        $cg = new HTTP_ConditionalGet($cgOptions);
+        if ($cg->cacheIsValid) {
+            // client's cache is valid
+            if (! self::$_options['quiet']) {
+                $cg->sendHeaders();
+                return;
+            } else {
+                return array(
+                    'success' => true
+                    ,'statusCode' => 304
+                    ,'content' => ''
+                    ,'headers' => $cg->getHeaders()
+                );
+            }
+        } else {
+            // client will need output
+            $headers = $cg->getHeaders();
+            unset($cg);
+        }
+        
+        if (self::$_options['contentType'] === self::TYPE_CSS
+            && self::$_options['rewriteCssUris']) {
+            foreach($controller->sources as $key => $source) {
+                if ($source->filepath 
+                    && !isset($source->minifyOptions['currentDir'])
+                    && !isset($source->minifyOptions['prependRelativePath'])
+                ) {
+                    $source->minifyOptions['currentDir'] = dirname($source->filepath);
+                }
+            }
+        }
+        
+        // check server cache
+        if (null !== self::$_cache && ! self::$_options['debug']) {
+            // using cache
+            // the goal is to use only the cache methods to sniff the length and 
+            // output the content, as they do not require ever loading the file into
+            // memory.
+            $cacheId = self::_getCacheId();
+            $fullCacheId = (self::$_options['encodeMethod'])
+                ? $cacheId . '.gz'
+                : $cacheId;
+            // check cache for valid entry
+            $cacheIsReady = self::$_cache->isValid($fullCacheId, self::$_options['lastModifiedTime']); 
+            if ($cacheIsReady) {
+                $cacheContentLength = self::$_cache->getSize($fullCacheId);    
+            } else {
+                // generate & cache content
+                try {
+                    $content = self::_combineMinify();
+                } catch (Exception $e) {
+                    self::$_controller->log($e->getMessage());
+                    if (! self::$_options['quiet']) {
+                        self::_errorExit(self::$_options['errorHeader'], self::URL_DEBUG);
+                    }
+                    throw $e;
+                }
+                self::$_cache->store($cacheId, $content);
+                if (function_exists('gzencode')) {
+                    self::$_cache->store($cacheId . '.gz', gzencode($content, self::$_options['encodeLevel']));
+                }
+            }
+        } else {
+            // no cache
+            $cacheIsReady = false;
+            try {
+                $content = self::_combineMinify();
+            } catch (Exception $e) {
+                self::$_controller->log($e->getMessage());
+                if (! self::$_options['quiet']) {
+                    self::_errorExit(self::$_options['errorHeader'], self::URL_DEBUG);
+                }
+                throw $e;
+            }
+        }
+        if (! $cacheIsReady && self::$_options['encodeMethod']) {
+            // still need to encode
+            $content = gzencode($content, self::$_options['encodeLevel']);
+        }
+        
+        // add headers
+        $headers['Content-Length'] = $cacheIsReady
+            ? $cacheContentLength
+            : ((function_exists('mb_strlen') && ((int)ini_get('mbstring.func_overload') & 2))
+                ? mb_strlen($content, '8bit')
+                : strlen($content)
+            );
+        $headers['Content-Type'] = self::$_options['contentTypeCharset']
+            ? self::$_options['contentType'] . '; charset=' . self::$_options['contentTypeCharset']
+            : self::$_options['contentType'];
+        if (self::$_options['encodeMethod'] !== '') {
+            $headers['Content-Encoding'] = $contentEncoding;
+        }
+        if (self::$_options['encodeOutput'] && $sendVary) {
+            $headers['Vary'] = 'Accept-Encoding';
+        }
+
+        if (! self::$_options['quiet']) {
+            // output headers & content
+            foreach ($headers as $name => $val) {
+                header($name . ': ' . $val);
+            }
+            if ($cacheIsReady) {
+                self::$_cache->display($fullCacheId);
+            } else {
+                echo $content;
+            }
+        } else {
+            return array(
+                'success' => true
+                ,'statusCode' => 200
+                ,'content' => $cacheIsReady
+                    ? self::$_cache->fetch($fullCacheId)
+                    : $content
+                ,'headers' => $headers
+            );
+        }
+    }
+    
+    /**
+     * Return combined minified content for a set of sources
+     *
+     * No internal caching will be used and the content will not be HTTP encoded.
+     * 
+     * @param array $sources array of filepaths and/or Minify_Source objects
+     * 
+     * @param array $options (optional) array of options for serve. By default
+     * these are already set: quiet = true, encodeMethod = '', lastModifiedTime = 0.
+     * 
+     * @return string
+     */
+    public static function combine($sources, $options = array())
+    {
+        $cache = self::$_cache;
+        self::$_cache = null;
+        $options = array_merge(array(
+            'files' => (array)$sources
+            ,'quiet' => true
+            ,'encodeMethod' => ''
+            ,'lastModifiedTime' => 0
+        ), $options);
+        $out = self::serve('Files', $options);
+        self::$_cache = $cache;
+        return $out['content'];
+    }
+    
+    /**
+     * Set $_SERVER['DOCUMENT_ROOT']. On IIS, the value is created from SCRIPT_FILENAME and SCRIPT_NAME.
+     * 
+     * @param string $docRoot value to use for DOCUMENT_ROOT
+     */
+    public static function setDocRoot($docRoot = '')
+    {
+        self::$isDocRootSet = true;
+        if ($docRoot) {
+            $_SERVER['DOCUMENT_ROOT'] = $docRoot;
+        } elseif (isset($_SERVER['SERVER_SOFTWARE'])
+                  && 0 === strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/')) {
+            $_SERVER['DOCUMENT_ROOT'] = substr(
+                $_SERVER['SCRIPT_FILENAME']
+                ,0
+                ,strlen($_SERVER['SCRIPT_FILENAME']) - strlen($_SERVER['SCRIPT_NAME']));
+            $_SERVER['DOCUMENT_ROOT'] = rtrim($_SERVER['DOCUMENT_ROOT'], '\\');
+        }
+    }
+    
+    /**
+     * Any Minify_Cache_* object or null (i.e. no server cache is used)
+     *
+     * @var Minify_Cache_File
+     */
+    private static $_cache = null;
+    
+    /**
+     * Active controller for current request
+     *
+     * @var Minify_Controller_Base
+     */
+    protected static $_controller = null;
+    
+    /**
+     * Options for current request
+     *
+     * @var array
+     */
+    protected static $_options = null;
+
+    /**
+     * @param string $header
+     *
+     * @param string $url
+     */
+    protected static function _errorExit($header, $url)
+    {
+        $url = htmlspecialchars($url, ENT_QUOTES);
+        list(,$h1) = explode(' ', $header, 2);
+        $h1 = htmlspecialchars($h1);
+        // FastCGI environments require 3rd arg to header() to be set
+        list(, $code) = explode(' ', $header, 3);
+        header($header, true, $code);
+        header('Content-Type: text/html; charset=utf-8');
+        echo "<h1>$h1</h1>";
+        echo "<p>Please see <a href='$url'>$url</a>.</p>";
+        exit();
+    }
+
+    /**
+     * Set up sources to use Minify_Lines
+     *
+     * @param array $sources Minify_Source instances
+     */
+    protected static function _setupDebug($sources)
+    {
+        foreach ($sources as $source) {
+            $source->minifier = array('Minify_Lines', 'minify');
+            $id = $source->getId();
+            $source->minifyOptions = array(
+                'id' => (is_file($id) ? basename($id) : $id)
+            );
+        }
+    }
+    
+    /**
+     * Combines sources and minifies the result.
+     *
+     * @return string
+     */
+    protected static function _combineMinify()
+    {
+        $type = self::$_options['contentType']; // ease readability
+        
+        // when combining scripts, make sure all statements separated and
+        // trailing single line comment is terminated
+        $implodeSeparator = ($type === self::TYPE_JS)
+            ? "\n;"
+            : '';
+        // allow the user to pass a particular array of options to each
+        // minifier (designated by type). source objects may still override
+        // these
+        $defaultOptions = isset(self::$_options['minifierOptions'][$type])
+            ? self::$_options['minifierOptions'][$type]
+            : array();
+        // if minifier not set, default is no minification. source objects
+        // may still override this
+        $defaultMinifier = isset(self::$_options['minifiers'][$type])
+            ? self::$_options['minifiers'][$type]
+            : false;
+
+        // process groups of sources with identical minifiers/options
+        $content = array();
+        $i = 0;
+        $l = count(self::$_controller->sources);
+        $groupToProcessTogether = array();
+        $lastMinifier = null;
+        $lastOptions = null;
+        do {
+            // get next source
+            $source = null;
+            if ($i < $l) {
+                $source = self::$_controller->sources[$i];
+                /* @var Minify_Source $source */
+                $sourceContent = $source->getContent();
+
+                // allow the source to override our minifier and options
+                $minifier = (null !== $source->minifier)
+                    ? $source->minifier
+                    : $defaultMinifier;
+                $options = (null !== $source->minifyOptions)
+                    ? array_merge($defaultOptions, $source->minifyOptions)
+                    : $defaultOptions;
+            }
+            // do we need to process our group right now?
+            if ($i > 0                               // yes, we have at least the first group populated
+                && (
+                    ! $source                        // yes, we ran out of sources
+                    || $type === self::TYPE_CSS      // yes, to process CSS individually (avoiding PCRE bugs/limits)
+                    || $minifier !== $lastMinifier   // yes, minifier changed
+                    || $options !== $lastOptions)    // yes, options changed
+                )
+            {
+                // minify previous sources with last settings
+                $imploded = implode($implodeSeparator, $groupToProcessTogether);
+                $groupToProcessTogether = array();
+                if ($lastMinifier) {
+                    self::$_controller->loadMinifier($lastMinifier);
+                    try {
+                        $content[] = call_user_func($lastMinifier, $imploded, $lastOptions);
+                    } catch (Exception $e) {
+                        throw new Exception("Exception in minifier: " . $e->getMessage());
+                    }
+                } else {
+                    $content[] = $imploded;
+                }
+            }
+            // add content to the group
+            if ($source) {
+                $groupToProcessTogether[] = $sourceContent;
+                $lastMinifier = $minifier;
+                $lastOptions = $options;
+            }
+            $i++;
+        } while ($source);
+
+        $content = implode($implodeSeparator, $content);
+        
+        if ($type === self::TYPE_CSS && false !== strpos($content, '@import')) {
+            $content = self::_handleCssImports($content);
+        }
+        
+        // do any post-processing (esp. for editing build URIs)
+        if (self::$_options['postprocessorRequire']) {
+            require_once self::$_options['postprocessorRequire'];
+        }
+        if (self::$_options['postprocessor']) {
+            $content = call_user_func(self::$_options['postprocessor'], $content, $type);
+        }
+        return $content;
+    }
+    
+    /**
+     * Make a unique cache id for for this request.
+     * 
+     * Any settings that could affect output are taken into consideration  
+     *
+     * @param string $prefix
+     *
+     * @return string
+     */
+    protected static function _getCacheId($prefix = 'minify')
+    {
+        $name = preg_replace('/[^a-zA-Z0-9\\.=_,]/', '', self::$_controller->selectionId);
+        $name = preg_replace('/\\.+/', '.', $name);
+        $name = substr($name, 0, 200 - 34 - strlen($prefix));
+        $md5 = md5(serialize(array(
+            Minify_Source::getDigest(self::$_controller->sources)
+            ,self::$_options['minifiers'] 
+            ,self::$_options['minifierOptions']
+            ,self::$_options['postprocessor']
+            ,self::$_options['bubbleCssImports']
+            ,self::VERSION
+        )));
+        return "{$prefix}_{$name}_{$md5}";
+    }
+    
+    /**
+     * Bubble CSS @imports to the top or prepend a warning if an import is detected not at the top.
+     *
+     * @param string $css
+     *
+     * @return string
+     */
+    protected static function _handleCssImports($css)
+    {
+        if (self::$_options['bubbleCssImports']) {
+            // bubble CSS imports
+            preg_match_all('/@import.*?;/', $css, $imports);
+            $css = implode('', $imports[0]) . preg_replace('/@import.*?;/', '', $css);
+        } else if ('' !== self::$importWarning) {
+            // remove comments so we don't mistake { in a comment as a block
+            $noCommentCss = preg_replace('@/\\*[\\s\\S]*?\\*/@', '', $css);
+            $lastImportPos = strrpos($noCommentCss, '@import');
+            $firstBlockPos = strpos($noCommentCss, '{');
+            if (false !== $lastImportPos
+                && false !== $firstBlockPos
+                && $firstBlockPos < $lastImportPos
+            ) {
+                // { appears before @import : prepend warning
+                $css = self::$importWarning . $css;
+            }
+        }
+        return $css;
+    }
+}
diff --git a/inc/lib/minify/Minify/Build.php b/inc/lib/minify/Minify/Build.php
new file mode 100755
index 00000000..e625165e
--- /dev/null
+++ b/inc/lib/minify/Minify/Build.php
@@ -0,0 +1,103 @@
+<?php
+/**
+ * Class Minify_Build  
+ * @package Minify
+ */
+
+require_once 'Minify/Source.php';
+
+/**
+ * Maintain a single last modification time for a group of Minify sources to
+ * allow use of far off Expires headers in Minify.
+ * 
+ * <code>
+ * // in config file
+ * $groupSources = array(
+ *   'js' => array('file1.js', 'file2.js')
+ *   ,'css' => array('file1.css', 'file2.css', 'file3.css')
+ * )
+ * 
+ * // during HTML generation
+ * $jsBuild = new Minify_Build($groupSources['js']);
+ * $cssBuild = new Minify_Build($groupSources['css']);
+ * 
+ * $script = "<script type='text/javascript' src='"
+ *     . $jsBuild->uri('/min.php/js') . "'></script>";
+ * $link = "<link rel='stylesheet' type='text/css' href='"
+ *     . $cssBuild->uri('/min.php/css') . "'>";
+ * 
+ * // in min.php
+ * Minify::serve('Groups', array(
+ *   'groups' => $groupSources
+ *   ,'setExpires' => (time() + 86400 * 365)
+ * ));
+ * </code>
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Build {
+    
+    /**
+     * Last modification time of all files in the build
+     * 
+     * @var int 
+     */
+    public $lastModified = 0;
+    
+    /**
+     * String to use as ampersand in uri(). Set this to '&' if
+     * you are not HTML-escaping URIs.
+     *
+     * @var string
+     */
+    public static $ampersand = '&amp;';
+    
+    /**
+     * Get a time-stamped URI
+     * 
+     * <code>
+     * echo $b->uri('/site.js');
+     * // outputs "/site.js?1678242"
+     * 
+     * echo $b->uri('/scriptaculous.js?load=effects');
+     * // outputs "/scriptaculous.js?load=effects&amp1678242"
+     * </code>
+     *
+     * @param string $uri
+     * @param boolean $forceAmpersand (default = false) Force the use of ampersand to 
+     * append the timestamp to the URI.
+     * @return string
+     */
+    public function uri($uri, $forceAmpersand = false) {
+        $sep = ($forceAmpersand || strpos($uri, '?') !== false)
+            ? self::$ampersand
+            : '?';
+        return "{$uri}{$sep}{$this->lastModified}";
+    }
+
+	/**
+     * Create a build object
+     * 
+     * @param array $sources array of Minify_Source objects and/or file paths
+     * 
+     * @return null
+     */
+    public function __construct($sources) 
+    {
+        $max = 0;
+        foreach ((array)$sources as $source) {
+            if ($source instanceof Minify_Source) {
+                $max = max($max, $source->lastModified);
+            } elseif (is_string($source)) {
+                if (0 === strpos($source, '//')) {
+                    $source = $_SERVER['DOCUMENT_ROOT'] . substr($source, 1);
+                }
+                if (is_file($source)) {
+                    $max = max($max, filemtime($source));
+                }
+            }
+        }
+        $this->lastModified = $max;
+    }
+}
diff --git a/inc/lib/minify/Minify/CSS.php b/inc/lib/minify/Minify/CSS.php
new file mode 100755
index 00000000..49882e9d
--- /dev/null
+++ b/inc/lib/minify/Minify/CSS.php
@@ -0,0 +1,99 @@
+<?php

+/**

+ * Class Minify_CSS  

+ * @package Minify

+ */

+

+/**

+ * Minify CSS

+ *

+ * This class uses Minify_CSS_Compressor and Minify_CSS_UriRewriter to 

+ * minify CSS and rewrite relative URIs.

+ * 

+ * @package Minify

+ * @author Stephen Clay <steve@mrclay.org>

+ * @author http://code.google.com/u/1stvamp/ (Issue 64 patch)

+ */

+class Minify_CSS {

+    

+    /**

+     * Minify a CSS string

+     * 

+     * @param string $css

+     * 

+     * @param array $options available options:

+     * 

+     * 'preserveComments': (default true) multi-line comments that begin

+     * with "/*!" will be preserved with newlines before and after to

+     * enhance readability.

+     *

+     * 'removeCharsets': (default true) remove all @charset at-rules

+     * 

+     * 'prependRelativePath': (default null) if given, this string will be

+     * prepended to all relative URIs in import/url declarations

+     * 

+     * 'currentDir': (default null) if given, this is assumed to be the

+     * directory of the current CSS file. Using this, minify will rewrite

+     * all relative URIs in import/url declarations to correctly point to

+     * the desired files. For this to work, the files *must* exist and be

+     * visible by the PHP process.

+     *

+     * 'symlinks': (default = array()) If the CSS file is stored in 

+     * a symlink-ed directory, provide an array of link paths to

+     * target paths, where the link paths are within the document root. Because 

+     * paths need to be normalized for this to work, use "//" to substitute 

+     * the doc root in the link paths (the array keys). E.g.:

+     * <code>

+     * array('//symlink' => '/real/target/path') // unix

+     * array('//static' => 'D:\\staticStorage')  // Windows

+     * </code>

+     *

+     * 'docRoot': (default = $_SERVER['DOCUMENT_ROOT'])

+     * see Minify_CSS_UriRewriter::rewrite

+     * 

+     * @return string

+     */

+    public static function minify($css, $options = array()) 

+    {

+        $options = array_merge(array(

+            'removeCharsets' => true,

+            'preserveComments' => true,

+            'currentDir' => null,

+            'docRoot' => $_SERVER['DOCUMENT_ROOT'],

+            'prependRelativePath' => null,

+            'symlinks' => array(),

+        ), $options);

+        

+        if ($options['removeCharsets']) {

+            $css = preg_replace('/@charset[^;]+;\\s*/', '', $css);

+        }

+        require_once 'Minify/CSS/Compressor.php';

+        if (! $options['preserveComments']) {

+            $css = Minify_CSS_Compressor::process($css, $options);

+        } else {

+            require_once 'Minify/CommentPreserver.php';

+            $css = Minify_CommentPreserver::process(

+                $css

+                ,array('Minify_CSS_Compressor', 'process')

+                ,array($options)

+            );

+        }

+        if (! $options['currentDir'] && ! $options['prependRelativePath']) {

+            return $css;

+        }

+        require_once 'Minify/CSS/UriRewriter.php';

+        if ($options['currentDir']) {

+            return Minify_CSS_UriRewriter::rewrite(

+                $css

+                ,$options['currentDir']

+                ,$options['docRoot']

+                ,$options['symlinks']

+            );  

+        } else {

+            return Minify_CSS_UriRewriter::prepend(

+                $css

+                ,$options['prependRelativePath']

+            );

+        }

+    }

+}

diff --git a/inc/lib/minify/Minify/CSS/Compressor.php b/inc/lib/minify/Minify/CSS/Compressor.php
new file mode 100755
index 00000000..c6cdd8b7
--- /dev/null
+++ b/inc/lib/minify/Minify/CSS/Compressor.php
@@ -0,0 +1,249 @@
+<?php

+/**

+ * Class Minify_CSS_Compressor 

+ * @package Minify

+ */

+

+/**

+ * Compress CSS

+ *

+ * This is a heavy regex-based removal of whitespace, unnecessary

+ * comments and tokens, and some CSS value minimization, where practical.

+ * Many steps have been taken to avoid breaking comment-based hacks, 

+ * including the ie5/mac filter (and its inversion), but expect tricky

+ * hacks involving comment tokens in 'content' value strings to break

+ * minimization badly. A test suite is available.

+ * 

+ * @package Minify

+ * @author Stephen Clay <steve@mrclay.org>

+ * @author http://code.google.com/u/1stvamp/ (Issue 64 patch)

+ */

+class Minify_CSS_Compressor {

+

+    /**

+     * Minify a CSS string

+     * 

+     * @param string $css

+     * 

+     * @param array $options (currently ignored)

+     * 

+     * @return string

+     */

+    public static function process($css, $options = array())

+    {

+        $obj = new Minify_CSS_Compressor($options);

+        return $obj->_process($css);

+    }

+    

+    /**

+     * @var array

+     */

+    protected $_options = null;

+    

+    /**

+     * Are we "in" a hack? I.e. are some browsers targetted until the next comment?

+     *

+     * @var bool

+     */

+    protected $_inHack = false;

+    

+    

+    /**

+     * Constructor

+     * 

+     * @param array $options (currently ignored)

+     */

+    private function __construct($options) {

+        $this->_options = $options;

+    }

+    

+    /**

+     * Minify a CSS string

+     * 

+     * @param string $css

+     * 

+     * @return string

+     */

+    protected function _process($css)

+    {

+        $css = str_replace("\r\n", "\n", $css);

+        

+        // preserve empty comment after '>'

+        // http://www.webdevout.net/css-hacks#in_css-selectors

+        $css = preg_replace('@>/\\*\\s*\\*/@', '>/*keep*/', $css);

+        

+        // preserve empty comment between property and value

+        // http://css-discuss.incutio.com/?page=BoxModelHack

+        $css = preg_replace('@/\\*\\s*\\*/\\s*:@', '/*keep*/:', $css);

+        $css = preg_replace('@:\\s*/\\*\\s*\\*/@', ':/*keep*/', $css);

+        

+        // apply callback to all valid comments (and strip out surrounding ws

+        $css = preg_replace_callback('@\\s*/\\*([\\s\\S]*?)\\*/\\s*@'

+            ,array($this, '_commentCB'), $css);

+

+        // remove ws around { } and last semicolon in declaration block

+        $css = preg_replace('/\\s*{\\s*/', '{', $css);

+        $css = preg_replace('/;?\\s*}\\s*/', '}', $css);

+        

+        // remove ws surrounding semicolons

+        $css = preg_replace('/\\s*;\\s*/', ';', $css);

+        

+        // remove ws around urls

+        $css = preg_replace('/

+                url\\(      # url(

+                \\s*

+                ([^\\)]+?)  # 1 = the URL (really just a bunch of non right parenthesis)

+                \\s*

+                \\)         # )

+            /x', 'url($1)', $css);

+        

+        // remove ws between rules and colons

+        $css = preg_replace('/

+                \\s*

+                ([{;])              # 1 = beginning of block or rule separator 

+                \\s*

+                ([\\*_]?[\\w\\-]+)  # 2 = property (and maybe IE filter)

+                \\s*

+                :

+                \\s*

+                (\\b|[#\'"-])        # 3 = first character of a value

+            /x', '$1$2:$3', $css);

+        

+        // remove ws in selectors

+        $css = preg_replace_callback('/

+                (?:              # non-capture

+                    \\s*

+                    [^~>+,\\s]+  # selector part

+                    \\s*

+                    [,>+~]       # combinators

+                )+

+                \\s*

+                [^~>+,\\s]+      # selector part

+                {                # open declaration block

+            /x'

+            ,array($this, '_selectorsCB'), $css);

+        

+        // minimize hex colors

+        $css = preg_replace('/([^=])#([a-f\\d])\\2([a-f\\d])\\3([a-f\\d])\\4([\\s;\\}])/i'

+            , '$1#$2$3$4$5', $css);

+        

+        // remove spaces between font families

+        $css = preg_replace_callback('/font-family:([^;}]+)([;}])/'

+            ,array($this, '_fontFamilyCB'), $css);

+        

+        $css = preg_replace('/@import\\s+url/', '@import url', $css);

+        

+        // replace any ws involving newlines with a single newline

+        $css = preg_replace('/[ \\t]*\\n+\\s*/', "\n", $css);

+        

+        // separate common descendent selectors w/ newlines (to limit line lengths)

+        $css = preg_replace('/([\\w#\\.\\*]+)\\s+([\\w#\\.\\*]+){/', "$1\n$2{", $css);

+        

+        // Use newline after 1st numeric value (to limit line lengths).

+        $css = preg_replace('/

+            ((?:padding|margin|border|outline):\\d+(?:px|em)?) # 1 = prop : 1st numeric value

+            \\s+

+            /x'

+            ,"$1\n", $css);

+        

+        // prevent triggering IE6 bug: http://www.crankygeek.com/ie6pebug/

+        $css = preg_replace('/:first-l(etter|ine)\\{/', ':first-l$1 {', $css);

+            

+        return trim($css);

+    }

+    

+    /**

+     * Replace what looks like a set of selectors  

+     *

+     * @param array $m regex matches

+     * 

+     * @return string

+     */

+    protected function _selectorsCB($m)

+    {

+        // remove ws around the combinators

+        return preg_replace('/\\s*([,>+~])\\s*/', '$1', $m[0]);

+    }

+    

+    /**

+     * Process a comment and return a replacement

+     * 

+     * @param array $m regex matches

+     * 

+     * @return string

+     */

+    protected function _commentCB($m)

+    {

+        $hasSurroundingWs = (trim($m[0]) !== $m[1]);

+        $m = $m[1]; 

+        // $m is the comment content w/o the surrounding tokens, 

+        // but the return value will replace the entire comment.

+        if ($m === 'keep') {

+            return '/**/';

+        }

+        if ($m === '" "') {

+            // component of http://tantek.com/CSS/Examples/midpass.html

+            return '/*" "*/';

+        }

+        if (preg_match('@";\\}\\s*\\}/\\*\\s+@', $m)) {

+            // component of http://tantek.com/CSS/Examples/midpass.html

+            return '/*";}}/* */';

+        }

+        if ($this->_inHack) {

+            // inversion: feeding only to one browser

+            if (preg_match('@

+                    ^/               # comment started like /*/

+                    \\s*

+                    (\\S[\\s\\S]+?)  # has at least some non-ws content

+                    \\s*

+                    /\\*             # ends like /*/ or /**/

+                @x', $m, $n)) {

+                // end hack mode after this comment, but preserve the hack and comment content

+                $this->_inHack = false;

+                return "/*/{$n[1]}/**/";

+            }

+        }

+        if (substr($m, -1) === '\\') { // comment ends like \*/

+            // begin hack mode and preserve hack

+            $this->_inHack = true;

+            return '/*\\*/';

+        }

+        if ($m !== '' && $m[0] === '/') { // comment looks like /*/ foo */

+            // begin hack mode and preserve hack

+            $this->_inHack = true;

+            return '/*/*/';

+        }

+        if ($this->_inHack) {

+            // a regular comment ends hack mode but should be preserved

+            $this->_inHack = false;

+            return '/**/';

+        }

+        // Issue 107: if there's any surrounding whitespace, it may be important, so 

+        // replace the comment with a single space

+        return $hasSurroundingWs // remove all other comments

+            ? ' '

+            : '';

+    }

+    

+    /**

+     * Process a font-family listing and return a replacement

+     * 

+     * @param array $m regex matches

+     * 

+     * @return string   

+     */

+    protected function _fontFamilyCB($m)

+    {

+        // Issue 210: must not eliminate WS between words in unquoted families

+        $pieces = preg_split('/(\'[^\']+\'|"[^"]+")/', $m[1], null, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);

+        $out = 'font-family:';

+        while (null !== ($piece = array_shift($pieces))) {

+            if ($piece[0] !== '"' && $piece[0] !== "'") {

+                $piece = preg_replace('/\\s+/', ' ', $piece);

+                $piece = preg_replace('/\\s?,\\s?/', ',', $piece);

+            }

+            $out .= $piece;

+        }

+        return $out . $m[2];

+    }

+}

diff --git a/inc/lib/minify/Minify/CSS/UriRewriter.php b/inc/lib/minify/Minify/CSS/UriRewriter.php
new file mode 100755
index 00000000..8845f156
--- /dev/null
+++ b/inc/lib/minify/Minify/CSS/UriRewriter.php
@@ -0,0 +1,310 @@
+<?php
+/**
+ * Class Minify_CSS_UriRewriter  
+ * @package Minify
+ */
+
+/**
+ * Rewrite file-relative URIs as root-relative in CSS files
+ *
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_CSS_UriRewriter {
+    
+    /**
+     * rewrite() and rewriteRelative() append debugging information here
+     *
+     * @var string
+     */
+    public static $debugText = '';
+    
+    /**
+     * In CSS content, rewrite file relative URIs as root relative
+     * 
+     * @param string $css
+     * 
+     * @param string $currentDir The directory of the current CSS file.
+     * 
+     * @param string $docRoot The document root of the web site in which 
+     * the CSS file resides (default = $_SERVER['DOCUMENT_ROOT']).
+     * 
+     * @param array $symlinks (default = array()) If the CSS file is stored in 
+     * a symlink-ed directory, provide an array of link paths to
+     * target paths, where the link paths are within the document root. Because 
+     * paths need to be normalized for this to work, use "//" to substitute 
+     * the doc root in the link paths (the array keys). E.g.:
+     * <code>
+     * array('//symlink' => '/real/target/path') // unix
+     * array('//static' => 'D:\\staticStorage')  // Windows
+     * </code>
+     * 
+     * @return string
+     */
+    public static function rewrite($css, $currentDir, $docRoot = null, $symlinks = array()) 
+    {
+        self::$_docRoot = self::_realpath(
+            $docRoot ? $docRoot : $_SERVER['DOCUMENT_ROOT']
+        );
+        self::$_currentDir = self::_realpath($currentDir);
+        self::$_symlinks = array();
+        
+        // normalize symlinks
+        foreach ($symlinks as $link => $target) {
+            $link = ($link === '//')
+                ? self::$_docRoot
+                : str_replace('//', self::$_docRoot . '/', $link);
+            $link = strtr($link, '/', DIRECTORY_SEPARATOR);
+            self::$_symlinks[$link] = self::_realpath($target);
+        }
+        
+        self::$debugText .= "docRoot    : " . self::$_docRoot . "\n"
+                          . "currentDir : " . self::$_currentDir . "\n";
+        if (self::$_symlinks) {
+            self::$debugText .= "symlinks : " . var_export(self::$_symlinks, 1) . "\n";
+        }
+        self::$debugText .= "\n";
+        
+        $css = self::_trimUrls($css);
+        
+        // rewrite
+        $css = preg_replace_callback('/@import\\s+([\'"])(.*?)[\'"]/'
+            ,array(self::$className, '_processUriCB'), $css);
+        $css = preg_replace_callback('/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
+            ,array(self::$className, '_processUriCB'), $css);
+
+        return $css;
+    }
+    
+    /**
+     * In CSS content, prepend a path to relative URIs
+     * 
+     * @param string $css
+     * 
+     * @param string $path The path to prepend.
+     * 
+     * @return string
+     */
+    public static function prepend($css, $path)
+    {
+        self::$_prependPath = $path;
+        
+        $css = self::_trimUrls($css);
+        
+        // append
+        $css = preg_replace_callback('/@import\\s+([\'"])(.*?)[\'"]/'
+            ,array(self::$className, '_processUriCB'), $css);
+        $css = preg_replace_callback('/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
+            ,array(self::$className, '_processUriCB'), $css);
+
+        self::$_prependPath = null;
+        return $css;
+    }
+    
+    /**
+     * Get a root relative URI from a file relative URI
+     *
+     * <code>
+     * Minify_CSS_UriRewriter::rewriteRelative(
+     *       '../img/hello.gif'
+     *     , '/home/user/www/css'  // path of CSS file
+     *     , '/home/user/www'      // doc root
+     * );
+     * // returns '/img/hello.gif'
+     * 
+     * // example where static files are stored in a symlinked directory
+     * Minify_CSS_UriRewriter::rewriteRelative(
+     *       'hello.gif'
+     *     , '/var/staticFiles/theme'
+     *     , '/home/user/www'
+     *     , array('/home/user/www/static' => '/var/staticFiles')
+     * );
+     * // returns '/static/theme/hello.gif'
+     * </code>
+     * 
+     * @param string $uri file relative URI
+     * 
+     * @param string $realCurrentDir realpath of the current file's directory.
+     * 
+     * @param string $realDocRoot realpath of the site document root.
+     * 
+     * @param array $symlinks (default = array()) If the file is stored in 
+     * a symlink-ed directory, provide an array of link paths to
+     * real target paths, where the link paths "appear" to be within the document 
+     * root. E.g.:
+     * <code>
+     * array('/home/foo/www/not/real/path' => '/real/target/path') // unix
+     * array('C:\\htdocs\\not\\real' => 'D:\\real\\target\\path')  // Windows
+     * </code>
+     * 
+     * @return string
+     */
+    public static function rewriteRelative($uri, $realCurrentDir, $realDocRoot, $symlinks = array())
+    {
+        // prepend path with current dir separator (OS-independent)
+        $path = strtr($realCurrentDir, '/', DIRECTORY_SEPARATOR)  
+            . DIRECTORY_SEPARATOR . strtr($uri, '/', DIRECTORY_SEPARATOR);
+        
+        self::$debugText .= "file-relative URI  : {$uri}\n"
+                          . "path prepended     : {$path}\n";
+        
+        // "unresolve" a symlink back to doc root
+        foreach ($symlinks as $link => $target) {
+            if (0 === strpos($path, $target)) {
+                // replace $target with $link
+                $path = $link . substr($path, strlen($target));
+                
+                self::$debugText .= "symlink unresolved : {$path}\n";
+                
+                break;
+            }
+        }
+        // strip doc root
+        $path = substr($path, strlen($realDocRoot));
+        
+        self::$debugText .= "docroot stripped   : {$path}\n";
+        
+        // fix to root-relative URI
+        $uri = strtr($path, '/\\', '//');
+        $uri = self::removeDots($uri);
+      
+        self::$debugText .= "traversals removed : {$uri}\n\n";
+        
+        return $uri;
+    }
+
+    /**
+     * Remove instances of "./" and "../" where possible from a root-relative URI
+     *
+     * @param string $uri
+     *
+     * @return string
+     */
+    public static function removeDots($uri)
+    {
+        $uri = str_replace('/./', '/', $uri);
+        // inspired by patch from Oleg Cherniy
+        do {
+            $uri = preg_replace('@/[^/]+/\\.\\./@', '/', $uri, 1, $changed);
+        } while ($changed);
+        return $uri;
+    }
+    
+    /**
+     * Defines which class to call as part of callbacks, change this
+     * if you extend Minify_CSS_UriRewriter
+     *
+     * @var string
+     */
+    protected static $className = 'Minify_CSS_UriRewriter';
+
+    /**
+     * Get realpath with any trailing slash removed. If realpath() fails,
+     * just remove the trailing slash.
+     * 
+     * @param string $path
+     * 
+     * @return mixed path with no trailing slash
+     */
+    protected static function _realpath($path)
+    {
+        $realPath = realpath($path);
+        if ($realPath !== false) {
+            $path = $realPath;
+        }
+        return rtrim($path, '/\\');
+    }
+
+    /**
+     * Directory of this stylesheet
+     *
+     * @var string
+     */
+    private static $_currentDir = '';
+
+    /**
+     * DOC_ROOT
+     *
+     * @var string
+     */
+    private static $_docRoot = '';
+
+    /**
+     * directory replacements to map symlink targets back to their
+     * source (within the document root) E.g. '/var/www/symlink' => '/var/realpath'
+     *
+     * @var array
+     */
+    private static $_symlinks = array();
+
+    /**
+     * Path to prepend
+     *
+     * @var string
+     */
+    private static $_prependPath = null;
+
+    /**
+     * @param string $css
+     *
+     * @return string
+     */
+    private static function _trimUrls($css)
+    {
+        return preg_replace('/
+            url\\(      # url(
+            \\s*
+            ([^\\)]+?)  # 1 = URI (assuming does not contain ")")
+            \\s*
+            \\)         # )
+        /x', 'url($1)', $css);
+    }
+
+    /**
+     * @param array $m
+     *
+     * @return string
+     */
+    private static function _processUriCB($m)
+    {
+        // $m matched either '/@import\\s+([\'"])(.*?)[\'"]/' or '/url\\(\\s*([^\\)\\s]+)\\s*\\)/'
+        $isImport = ($m[0][0] === '@');
+        // determine URI and the quote character (if any)
+        if ($isImport) {
+            $quoteChar = $m[1];
+            $uri = $m[2];
+        } else {
+            // $m[1] is either quoted or not
+            $quoteChar = ($m[1][0] === "'" || $m[1][0] === '"')
+                ? $m[1][0]
+                : '';
+            $uri = ($quoteChar === '')
+                ? $m[1]
+                : substr($m[1], 1, strlen($m[1]) - 2);
+        }
+        // analyze URI
+        if ('/' !== $uri[0]                  // root-relative
+            && false === strpos($uri, '//')  // protocol (non-data)
+            && 0 !== strpos($uri, 'data:')   // data protocol
+        ) {
+            // URI is file-relative: rewrite depending on options
+            if (self::$_prependPath === null) {
+                $uri = self::rewriteRelative($uri, self::$_currentDir, self::$_docRoot, self::$_symlinks);
+            } else {
+                $uri = self::$_prependPath . $uri;
+                if ($uri[0] === '/') {
+                    $root = '';
+                    $rootRelative = $uri;
+                    $uri = $root . self::removeDots($rootRelative);
+                } elseif (preg_match('@^((https?\:)?//([^/]+))/@', $uri, $m) && (false !== strpos($m[3], '.'))) {
+                    $root = $m[1];
+                    $rootRelative = substr($uri, strlen($root));
+                    $uri = $root . self::removeDots($rootRelative);
+                }
+            }
+        }
+        return $isImport
+            ? "@import {$quoteChar}{$uri}{$quoteChar}"
+            : "url({$quoteChar}{$uri}{$quoteChar})";
+    }
+}
diff --git a/inc/lib/minify/Minify/Cache/APC.php b/inc/lib/minify/Minify/Cache/APC.php
new file mode 100755
index 00000000..24ab0462
--- /dev/null
+++ b/inc/lib/minify/Minify/Cache/APC.php
@@ -0,0 +1,133 @@
+<?php
+/**
+ * Class Minify_Cache_APC
+ * @package Minify
+ */
+
+/**
+ * APC-based cache class for Minify
+ * 
+ * <code>
+ * Minify::setCache(new Minify_Cache_APC());
+ * </code>
+ * 
+ * @package Minify
+ * @author Chris Edwards
+ **/
+class Minify_Cache_APC {
+
+    /**
+     * Create a Minify_Cache_APC object, to be passed to
+     * Minify::setCache().
+     *
+     *
+     * @param int $expire seconds until expiration (default = 0
+     * meaning the item will not get an expiration date)
+     *
+     * @return null
+     */
+    public function __construct($expire = 0)
+    {
+        $this->_exp = $expire;
+    }
+
+    /**
+     * Write data to cache.
+     *
+     * @param string $id cache id
+     *
+     * @param string $data
+     *
+     * @return bool success
+     */
+    public function store($id, $data)
+    {
+        return apc_store($id, "{$_SERVER['REQUEST_TIME']}|{$data}", $this->_exp);
+    }
+
+    /**
+     * Get the size of a cache entry
+     *
+     * @param string $id cache id
+     *
+     * @return int size in bytes
+     */
+    public function getSize($id)
+    {
+        if (! $this->_fetch($id)) {
+            return false;
+        }
+        return (function_exists('mb_strlen') && ((int)ini_get('mbstring.func_overload') & 2))
+            ? mb_strlen($this->_data, '8bit')
+            : strlen($this->_data);
+    }
+
+    /**
+     * Does a valid cache entry exist?
+     *
+     * @param string $id cache id
+     *
+     * @param int $srcMtime mtime of the original source file(s)
+     *
+     * @return bool exists
+     */
+    public function isValid($id, $srcMtime)
+    {
+        return ($this->_fetch($id) && ($this->_lm >= $srcMtime));
+    }
+
+    /**
+     * Send the cached content to output
+     *
+     * @param string $id cache id
+     */
+    public function display($id)
+    {
+        echo $this->_fetch($id)
+            ? $this->_data
+            : '';
+    }
+
+    /**
+     * Fetch the cached content
+     *
+     * @param string $id cache id
+     *
+     * @return string
+     */
+    public function fetch($id)
+    {
+        return $this->_fetch($id)
+            ? $this->_data
+            : '';
+    }
+
+    private $_exp = null;
+
+    // cache of most recently fetched id
+    private $_lm = null;
+    private $_data = null;
+    private $_id = null;
+
+    /**
+     * Fetch data and timestamp from apc, store in instance
+     *
+     * @param string $id
+     *
+     * @return bool success
+     */
+    private function _fetch($id)
+    {
+        if ($this->_id === $id) {
+            return true;
+        }
+        $ret = apc_fetch($id);
+        if (false === $ret) {
+            $this->_id = null;
+            return false;
+        }
+        list($this->_lm, $this->_data) = explode('|', $ret, 2);
+        $this->_id = $id;
+        return true;
+    }
+}
diff --git a/inc/lib/minify/Minify/Cache/File.php b/inc/lib/minify/Minify/Cache/File.php
new file mode 100755
index 00000000..3fa6b18f
--- /dev/null
+++ b/inc/lib/minify/Minify/Cache/File.php
@@ -0,0 +1,195 @@
+<?php
+/**
+ * Class Minify_Cache_File  
+ * @package Minify
+ */
+
+class Minify_Cache_File {
+    
+    public function __construct($path = '', $fileLocking = false)
+    {
+        if (! $path) {
+            $path = self::tmp();
+        }
+        $this->_locking = $fileLocking;
+        $this->_path = $path;
+    }
+
+    /**
+     * Write data to cache.
+     *
+     * @param string $id cache id (e.g. a filename)
+     * 
+     * @param string $data
+     * 
+     * @return bool success
+     */
+    public function store($id, $data)
+    {
+        $flag = $this->_locking
+            ? LOCK_EX
+            : null;
+        $file = $this->_path . '/' . $id;
+        if (! @file_put_contents($file, $data, $flag)) {
+            $this->_log("Minify_Cache_File: Write failed to '$file'");
+        }
+        // write control
+        if ($data !== $this->fetch($id)) {
+            @unlink($file);
+            $this->_log("Minify_Cache_File: Post-write read failed for '$file'");
+            return false;
+        }
+        return true;
+    }
+    
+    /**
+     * Get the size of a cache entry
+     *
+     * @param string $id cache id (e.g. a filename)
+     * 
+     * @return int size in bytes
+     */
+    public function getSize($id)
+    {
+        return filesize($this->_path . '/' . $id);
+    }
+    
+    /**
+     * Does a valid cache entry exist?
+     *
+     * @param string $id cache id (e.g. a filename)
+     * 
+     * @param int $srcMtime mtime of the original source file(s)
+     * 
+     * @return bool exists
+     */
+    public function isValid($id, $srcMtime)
+    {
+        $file = $this->_path . '/' . $id;
+        return (is_file($file) && (filemtime($file) >= $srcMtime));
+    }
+    
+    /**
+     * Send the cached content to output
+     *
+     * @param string $id cache id (e.g. a filename)
+     */
+    public function display($id)
+    {
+        if ($this->_locking) {
+            $fp = fopen($this->_path . '/' . $id, 'rb');
+            flock($fp, LOCK_SH);
+            fpassthru($fp);
+            flock($fp, LOCK_UN);
+            fclose($fp);
+        } else {
+            readfile($this->_path . '/' . $id);            
+        }
+    }
+    
+	/**
+     * Fetch the cached content
+     *
+     * @param string $id cache id (e.g. a filename)
+     * 
+     * @return string
+     */
+    public function fetch($id)
+    {
+        if ($this->_locking) {
+            $fp = fopen($this->_path . '/' . $id, 'rb');
+            flock($fp, LOCK_SH);
+            $ret = stream_get_contents($fp);
+            flock($fp, LOCK_UN);
+            fclose($fp);
+            return $ret;
+        } else {
+            return file_get_contents($this->_path . '/' . $id);
+        }
+    }
+    
+    /**
+     * Fetch the cache path used
+     *
+     * @return string
+     */
+    public function getPath()
+    {
+        return $this->_path;
+    }
+
+    /**
+     * Get a usable temp directory
+     *
+     * Adapted from Solar/Dir.php
+     * @author Paul M. Jones <pmjones@solarphp.com>
+     * @license http://opensource.org/licenses/bsd-license.php BSD
+     * @link http://solarphp.com/trac/core/browser/trunk/Solar/Dir.php
+     *
+     * @return string
+     */
+    public static function tmp()
+    {
+        static $tmp = null;
+        if (! $tmp) {
+            $tmp = function_exists('sys_get_temp_dir')
+                ? sys_get_temp_dir()
+                : self::_tmp();
+            $tmp = rtrim($tmp, DIRECTORY_SEPARATOR);
+        }
+        return $tmp;
+    }
+
+    /**
+     * Returns the OS-specific directory for temporary files
+     *
+     * @author Paul M. Jones <pmjones@solarphp.com>
+     * @license http://opensource.org/licenses/bsd-license.php BSD
+     * @link http://solarphp.com/trac/core/browser/trunk/Solar/Dir.php
+     *
+     * @return string
+     */
+    protected static function _tmp()
+    {
+        // non-Windows system?
+        if (strtolower(substr(PHP_OS, 0, 3)) != 'win') {
+            $tmp = empty($_ENV['TMPDIR']) ? getenv('TMPDIR') : $_ENV['TMPDIR'];
+            if ($tmp) {
+                return $tmp;
+            } else {
+                return '/tmp';
+            }
+        }
+        // Windows 'TEMP'
+        $tmp = empty($_ENV['TEMP']) ? getenv('TEMP') : $_ENV['TEMP'];
+        if ($tmp) {
+            return $tmp;
+        }
+        // Windows 'TMP'
+        $tmp = empty($_ENV['TMP']) ? getenv('TMP') : $_ENV['TMP'];
+        if ($tmp) {
+            return $tmp;
+        }
+        // Windows 'windir'
+        $tmp = empty($_ENV['windir']) ? getenv('windir') : $_ENV['windir'];
+        if ($tmp) {
+            return $tmp;
+        }
+        // final fallback for Windows
+        return getenv('SystemRoot') . '\\temp';
+    }
+
+    /**
+     * Send message to the Minify logger
+     * @param string $msg
+     * @return null
+     */
+    protected function _log($msg)
+    {
+        require_once 'Minify/Logger.php';
+        Minify_Logger::log($msg);
+    }
+    
+    private $_path = null;
+    private $_locking = null;
+}
diff --git a/inc/lib/minify/Minify/Cache/Memcache.php b/inc/lib/minify/Minify/Cache/Memcache.php
new file mode 100755
index 00000000..72bf454b
--- /dev/null
+++ b/inc/lib/minify/Minify/Cache/Memcache.php
@@ -0,0 +1,140 @@
+<?php
+/**
+ * Class Minify_Cache_Memcache
+ * @package Minify
+ */
+
+/**
+ * Memcache-based cache class for Minify
+ * 
+ * <code>
+ * // fall back to disk caching if memcache can't connect
+ * $memcache = new Memcache;
+ * if ($memcache->connect('localhost', 11211)) {
+ *     Minify::setCache(new Minify_Cache_Memcache($memcache));
+ * } else {
+ *     Minify::setCache();
+ * }
+ * </code>
+ **/
+class Minify_Cache_Memcache {
+    
+    /**
+     * Create a Minify_Cache_Memcache object, to be passed to 
+     * Minify::setCache().
+     *
+     * @param Memcache $memcache already-connected instance
+     * 
+     * @param int $expire seconds until expiration (default = 0
+     * meaning the item will not get an expiration date)
+     * 
+     * @return null
+     */
+    public function __construct($memcache, $expire = 0)
+    {
+        $this->_mc = $memcache;
+        $this->_exp = $expire;
+    }
+    
+    /**
+     * Write data to cache.
+     *
+     * @param string $id cache id
+     * 
+     * @param string $data
+     * 
+     * @return bool success
+     */
+    public function store($id, $data)
+    {
+        return $this->_mc->set($id, "{$_SERVER['REQUEST_TIME']}|{$data}", 0, $this->_exp);
+    }
+    
+    
+    /**
+     * Get the size of a cache entry
+     *
+     * @param string $id cache id
+     * 
+     * @return int size in bytes
+     */
+    public function getSize($id)
+    {
+        if (! $this->_fetch($id)) {
+            return false;
+        }
+        return (function_exists('mb_strlen') && ((int)ini_get('mbstring.func_overload') & 2))
+            ? mb_strlen($this->_data, '8bit')
+            : strlen($this->_data);
+    }
+    
+    /**
+     * Does a valid cache entry exist?
+     *
+     * @param string $id cache id
+     * 
+     * @param int $srcMtime mtime of the original source file(s)
+     * 
+     * @return bool exists
+     */
+    public function isValid($id, $srcMtime)
+    {
+        return ($this->_fetch($id) && ($this->_lm >= $srcMtime));
+    }
+    
+    /**
+     * Send the cached content to output
+     *
+     * @param string $id cache id
+     */
+    public function display($id)
+    {
+        echo $this->_fetch($id)
+            ? $this->_data
+            : '';
+    }
+    
+	/**
+     * Fetch the cached content
+     *
+     * @param string $id cache id
+     * 
+     * @return string
+     */
+    public function fetch($id)
+    {
+        return $this->_fetch($id)
+            ? $this->_data
+            : '';
+    }
+    
+    private $_mc = null;
+    private $_exp = null;
+    
+    // cache of most recently fetched id
+    private $_lm = null;
+    private $_data = null;
+    private $_id = null;
+    
+	/**
+     * Fetch data and timestamp from memcache, store in instance
+     * 
+     * @param string $id
+     * 
+     * @return bool success
+     */
+    private function _fetch($id)
+    {
+        if ($this->_id === $id) {
+            return true;
+        }
+        $ret = $this->_mc->get($id);
+        if (false === $ret) {
+            $this->_id = null;
+            return false;
+        }
+        list($this->_lm, $this->_data) = explode('|', $ret, 2);
+        $this->_id = $id;
+        return true;
+    }
+}
diff --git a/inc/lib/minify/Minify/Cache/ZendPlatform.php b/inc/lib/minify/Minify/Cache/ZendPlatform.php
new file mode 100755
index 00000000..3130d69a
--- /dev/null
+++ b/inc/lib/minify/Minify/Cache/ZendPlatform.php
@@ -0,0 +1,142 @@
+<?php
+/**
+ * Class Minify_Cache_ZendPlatform
+ * @package Minify
+ */
+
+
+/**
+ * ZendPlatform-based cache class for Minify
+ *
+ * Based on Minify_Cache_APC, uses output_cache_get/put (currently deprecated)
+ * 
+ * <code>
+ * Minify::setCache(new Minify_Cache_ZendPlatform());
+ * </code>
+ *
+ * @package Minify
+ * @author Patrick van Dissel
+ */
+class Minify_Cache_ZendPlatform {
+
+
+    /**
+     * Create a Minify_Cache_ZendPlatform object, to be passed to
+     * Minify::setCache().
+     *
+     * @param int $expire seconds until expiration (default = 0
+     * meaning the item will not get an expiration date)
+     *
+     * @return null
+     */
+    public function __construct($expire = 0)
+    {
+        $this->_exp = $expire;
+    }
+
+
+    /**
+     * Write data to cache.
+     *
+     * @param string $id cache id
+     *
+     * @param string $data
+     *
+     * @return bool success
+     */
+    public function store($id, $data)
+    {
+        return output_cache_put($id, "{$_SERVER['REQUEST_TIME']}|{$data}");
+    }
+
+
+    /**
+     * Get the size of a cache entry
+     *
+     * @param string $id cache id
+     *
+     * @return int size in bytes
+     */
+    public function getSize($id)
+    {
+        return $this->_fetch($id)
+            ? strlen($this->_data)
+            : false;
+    }
+
+
+    /**
+     * Does a valid cache entry exist?
+     *
+     * @param string $id cache id
+     *
+     * @param int $srcMtime mtime of the original source file(s)
+     *
+     * @return bool exists
+     */
+    public function isValid($id, $srcMtime)
+    {
+        $ret = ($this->_fetch($id) && ($this->_lm >= $srcMtime));
+        return $ret;
+    }
+
+
+    /**
+     * Send the cached content to output
+     *
+     * @param string $id cache id
+     */
+    public function display($id)
+    {
+        echo $this->_fetch($id)
+            ? $this->_data
+            : '';
+    }
+
+
+    /**
+     * Fetch the cached content
+     *
+     * @param string $id cache id
+     *
+     * @return string
+     */
+    public function fetch($id)
+    {
+        return $this->_fetch($id)
+            ? $this->_data
+            : '';
+    }
+
+
+    private $_exp = null;
+
+
+    // cache of most recently fetched id
+    private $_lm = null;
+    private $_data = null;
+    private $_id = null;
+
+
+    /**
+     * Fetch data and timestamp from ZendPlatform, store in instance
+     *
+     * @param string $id
+     *
+     * @return bool success
+     */
+    private function _fetch($id)
+    {
+        if ($this->_id === $id) {
+            return true;
+        }
+        $ret = output_cache_get($id, $this->_exp);
+        if (false === $ret) {
+            $this->_id = null;
+            return false;
+        }
+        list($this->_lm, $this->_data) = explode('|', $ret, 2);
+        $this->_id = $id;
+        return true;
+    }
+}
diff --git a/inc/lib/minify/Minify/CommentPreserver.php b/inc/lib/minify/Minify/CommentPreserver.php
new file mode 100755
index 00000000..7a359bf9
--- /dev/null
+++ b/inc/lib/minify/Minify/CommentPreserver.php
@@ -0,0 +1,89 @@
+<?php
+/**
+ * Class Minify_CommentPreserver 
+ * @package Minify
+ */
+
+/**
+ * Process a string in pieces preserving C-style comments that begin with "/*!"
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_CommentPreserver {
+    
+    /**
+     * String to be prepended to each preserved comment
+     *
+     * @var string
+     */
+    public static $prepend = "\n";
+    
+    /**
+     * String to be appended to each preserved comment
+     *
+     * @var string
+     */
+    public static $append = "\n";
+    
+    /**
+     * Process a string outside of C-style comments that begin with "/*!"
+     *
+     * On each non-empty string outside these comments, the given processor 
+     * function will be called. The comments will be surrounded by 
+     * Minify_CommentPreserver::$preprend and Minify_CommentPreserver::$append.
+     * 
+     * @param string $content
+     * @param callback $processor function
+     * @param array $args array of extra arguments to pass to the processor 
+     * function (default = array())
+     * @return string
+     */
+    public static function process($content, $processor, $args = array())
+    {
+        $ret = '';
+        while (true) {
+            list($beforeComment, $comment, $afterComment) = self::_nextComment($content);
+            if ('' !== $beforeComment) {
+                $callArgs = $args;
+                array_unshift($callArgs, $beforeComment);
+                $ret .= call_user_func_array($processor, $callArgs);    
+            }
+            if (false === $comment) {
+                break;
+            }
+            $ret .= $comment;
+            $content = $afterComment;
+        }
+        return $ret;
+    }
+    
+    /**
+     * Extract comments that YUI Compressor preserves.
+     * 
+     * @param string $in input
+     * 
+     * @return array 3 elements are returned. If a YUI comment is found, the
+     * 2nd element is the comment and the 1st and 3rd are the surrounding
+     * strings. If no comment is found, the entire string is returned as the 
+     * 1st element and the other two are false.
+     */
+    private static function _nextComment($in)
+    {
+        if (
+            false === ($start = strpos($in, '/*!'))
+            || false === ($end = strpos($in, '*/', $start + 3))
+        ) {
+            return array($in, false, false);
+        }
+        $ret = array(
+            substr($in, 0, $start)
+            ,self::$prepend . '/*!' . substr($in, $start + 3, $end - $start - 1) . self::$append
+        );
+        $endChars = (strlen($in) - $end - 2);
+        $ret[] = (0 === $endChars)
+            ? ''
+            : substr($in, -$endChars);
+        return $ret;
+    }
+}
diff --git a/inc/lib/minify/Minify/Controller/Base.php b/inc/lib/minify/Minify/Controller/Base.php
new file mode 100755
index 00000000..240b5449
--- /dev/null
+++ b/inc/lib/minify/Minify/Controller/Base.php
@@ -0,0 +1,250 @@
+<?php
+/**
+ * Class Minify_Controller_Base  
+ * @package Minify
+ */
+
+/**
+ * Base class for Minify controller
+ * 
+ * The controller class validates a request and uses it to create sources
+ * for minification and set options like contentType. It's also responsible
+ * for loading minifier code upon request.
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+abstract class Minify_Controller_Base {
+    
+    /**
+     * Setup controller sources and set an needed options for Minify::source
+     * 
+     * You must override this method in your subclass controller to set 
+     * $this->sources. If the request is NOT valid, make sure $this->sources 
+     * is left an empty array. Then strip any controller-specific options from 
+     * $options and return it. To serve files, $this->sources must be an array of
+     * Minify_Source objects.
+     * 
+     * @param array $options controller and Minify options
+     * 
+     * @return array $options Minify::serve options
+     */
+    abstract public function setupSources($options);
+    
+    /**
+     * Get default Minify options for this controller.
+     * 
+     * Override in subclass to change defaults
+     *
+     * @return array options for Minify
+     */
+    public function getDefaultMinifyOptions() {
+        return array(
+            'isPublic' => true
+            ,'encodeOutput' => function_exists('gzdeflate')
+            ,'encodeMethod' => null // determine later
+            ,'encodeLevel' => 9
+            ,'minifierOptions' => array() // no minifier options
+            ,'contentTypeCharset' => 'utf-8'
+            ,'maxAge' => 1800 // 30 minutes
+            ,'rewriteCssUris' => true
+            ,'bubbleCssImports' => false
+            ,'quiet' => false // serve() will send headers and output
+            ,'debug' => false
+            
+            // if you override these, the response codes MUST be directly after
+            // the first space.
+            ,'badRequestHeader' => 'HTTP/1.0 400 Bad Request'
+            ,'errorHeader'      => 'HTTP/1.0 500 Internal Server Error'
+            
+            // callback function to see/modify content of all sources
+            ,'postprocessor' => null
+            // file to require to load preprocessor
+            ,'postprocessorRequire' => null
+        );
+    }  
+
+    /**
+     * Get default minifiers for this controller.
+     * 
+     * Override in subclass to change defaults
+     *
+     * @return array minifier callbacks for common types
+     */
+    public function getDefaultMinifers() {
+        $ret[Minify::TYPE_JS] = array('JSMin', 'minify');
+        $ret[Minify::TYPE_CSS] = array('Minify_CSS', 'minify');
+        $ret[Minify::TYPE_HTML] = array('Minify_HTML', 'minify');
+        return $ret;
+    }
+    
+    /**
+     * Load any code necessary to execute the given minifier callback.
+     * 
+     * The controller is responsible for loading minification code on demand
+     * via this method. This built-in function will only load classes for
+     * static method callbacks where the class isn't already defined. It uses
+     * the PEAR convention, so, given array('Jimmy_Minifier', 'minCss'), this 
+     * function will include 'Jimmy/Minifier.php'.
+     * 
+     * If you need code loaded on demand and this doesn't suit you, you'll need
+     * to override this function in your subclass. 
+     * @see Minify_Controller_Page::loadMinifier()
+     * 
+     * @param callback $minifierCallback callback of minifier function
+     * 
+     * @return null
+     */
+    public function loadMinifier($minifierCallback)
+    {
+        if (is_array($minifierCallback)
+            && is_string($minifierCallback[0])
+            && !class_exists($minifierCallback[0], false)) {
+            
+            require str_replace('_', '/', $minifierCallback[0]) . '.php';
+        }
+    }
+    
+    /**
+     * Is a user-given file within an allowable directory, existing,
+     * and having an extension js/css/html/txt ?
+     * 
+     * This is a convenience function for controllers that have to accept
+     * user-given paths
+     *
+     * @param string $file full file path (already processed by realpath())
+     * 
+     * @param array $safeDirs directories where files are safe to serve. Files can also
+     * be in subdirectories of these directories.
+     * 
+     * @return bool file is safe
+     *
+     * @deprecated use checkAllowDirs, checkNotHidden instead
+     */
+    public static function _fileIsSafe($file, $safeDirs)
+    {
+        $pathOk = false;
+        foreach ((array)$safeDirs as $safeDir) {
+            if (strpos($file, $safeDir) === 0) {
+                $pathOk = true;
+                break;
+            }
+        }
+        $base = basename($file);
+        if (! $pathOk || ! is_file($file) || $base[0] === '.') {
+            return false;
+        }
+        list($revExt) = explode('.', strrev($base));
+        return in_array(strrev($revExt), array('js', 'css', 'html', 'txt'));
+    }
+
+    /**
+     * @param string $file
+     * @param array $allowDirs
+     * @param string $uri
+     * @return bool
+     * @throws Exception
+     */
+    public static function checkAllowDirs($file, $allowDirs, $uri)
+    {
+        foreach ((array)$allowDirs as $allowDir) {
+            if (strpos($file, $allowDir) === 0) {
+                return true;
+            }
+        }
+        throw new Exception("File '$file' is outside \$allowDirs. If the path is"
+            . " resolved via an alias/symlink, look into the \$min_symlinks option."
+            . " E.g. \$min_symlinks['/" . dirname($uri) . "'] = '" . dirname($file) . "';");
+    }
+
+    /**
+     * @param string $file
+     * @throws Exception
+     */
+    public static function checkNotHidden($file)
+    {
+        $b = basename($file);
+        if (0 === strpos($b, '.')) {
+            throw new Exception("Filename '$b' starts with period (may be hidden)");
+        }
+    }
+
+    /**
+     * instances of Minify_Source, which provide content and any individual minification needs.
+     *
+     * @var array
+     * 
+     * @see Minify_Source
+     */
+    public $sources = array();
+    
+    /**
+     * Short name to place inside cache id
+     *
+     * The setupSources() method may choose to set this, making it easier to
+     * recognize a particular set of sources/settings in the cache folder. It
+     * will be filtered and truncated to make the final cache id <= 250 bytes.
+     * 
+     * @var string
+     */
+    public $selectionId = '';
+
+    /**
+     * Mix in default controller options with user-given options
+     * 
+     * @param array $options user options
+     * 
+     * @return array mixed options
+     */
+    public final function mixInDefaultOptions($options)
+    {
+        $ret = array_merge(
+            $this->getDefaultMinifyOptions(), $options
+        );
+        if (! isset($options['minifiers'])) {
+            $options['minifiers'] = array();
+        }
+        $ret['minifiers'] = array_merge(
+            $this->getDefaultMinifers(), $options['minifiers']
+        );
+        return $ret;
+    }
+    
+    /**
+     * Analyze sources (if there are any) and set $options 'contentType' 
+     * and 'lastModifiedTime' if they already aren't.
+     * 
+     * @param array $options options for Minify
+     * 
+     * @return array options for Minify
+     */
+    public final function analyzeSources($options = array()) 
+    {
+        if ($this->sources) {
+            if (! isset($options['contentType'])) {
+                $options['contentType'] = Minify_Source::getContentType($this->sources);
+            }
+            // last modified is needed for caching, even if setExpires is set
+            if (! isset($options['lastModifiedTime'])) {
+                $max = 0;
+                foreach ($this->sources as $source) {
+                    $max = max($source->lastModified, $max);
+                }
+                $options['lastModifiedTime'] = $max;
+            }    
+        }
+        return $options;
+    }
+
+    /**
+     * Send message to the Minify logger
+     *
+     * @param string $msg
+     *
+     * @return null
+     */
+    public function log($msg) {
+        require_once 'Minify/Logger.php';
+        Minify_Logger::log($msg);
+    }
+}
diff --git a/inc/lib/minify/Minify/Controller/Files.php b/inc/lib/minify/Minify/Controller/Files.php
new file mode 100755
index 00000000..83f028ad
--- /dev/null
+++ b/inc/lib/minify/Minify/Controller/Files.php
@@ -0,0 +1,78 @@
+<?php
+/**
+ * Class Minify_Controller_Files  
+ * @package Minify
+ */
+
+require_once 'Minify/Controller/Base.php';
+
+/**
+ * Controller class for minifying a set of files
+ * 
+ * E.g. the following would serve the minified Javascript for a site
+ * <code>
+ * Minify::serve('Files', array(
+ *     'files' => array(
+ *         '//js/jquery.js'
+ *         ,'//js/plugins.js'
+ *         ,'/home/username/file.js'
+ *     )
+ * ));
+ * </code>
+ * 
+ * As a shortcut, the controller will replace "//" at the beginning
+ * of a filename with $_SERVER['DOCUMENT_ROOT'] . '/'.
+ *
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Controller_Files extends Minify_Controller_Base {
+    
+    /**
+     * Set up file sources
+     * 
+     * @param array $options controller and Minify options
+     * @return array Minify options
+     * 
+     * Controller options:
+     * 
+     * 'files': (required) array of complete file paths, or a single path
+     */
+    public function setupSources($options) {
+        // strip controller options
+        
+        $files = $options['files'];
+        // if $files is a single object, casting will break it
+        if (is_object($files)) {
+            $files = array($files);
+        } elseif (! is_array($files)) {
+            $files = (array)$files;
+        }
+        unset($options['files']);
+        
+        $sources = array();
+        foreach ($files as $file) {
+            if ($file instanceof Minify_Source) {
+                $sources[] = $file;
+                continue;
+            }
+            if (0 === strpos($file, '//')) {
+                $file = $_SERVER['DOCUMENT_ROOT'] . substr($file, 1);
+            }
+            $realPath = realpath($file);
+            if (is_file($realPath)) {
+                $sources[] = new Minify_Source(array(
+                    'filepath' => $realPath
+                ));    
+            } else {
+                $this->log("The path \"{$file}\" could not be found (or was not a file)");
+                return $options;
+            }
+        }
+        if ($sources) {
+            $this->sources = $sources;
+        }
+        return $options;
+    }
+}
+
diff --git a/inc/lib/minify/Minify/Controller/Groups.php b/inc/lib/minify/Minify/Controller/Groups.php
new file mode 100755
index 00000000..2d4e43b2
--- /dev/null
+++ b/inc/lib/minify/Minify/Controller/Groups.php
@@ -0,0 +1,93 @@
+<?php
+/**
+ * Class Minify_Controller_Groups  
+ * @package Minify
+ */
+
+require_once 'Minify/Controller/Base.php';
+
+/**
+ * Controller class for serving predetermined groups of minimized sets, selected
+ * by PATH_INFO
+ * 
+ * <code>
+ * Minify::serve('Groups', array( 
+ *     'groups' => array(
+ *         'css' => array('//css/type.css', '//css/layout.css')
+ *        ,'js' => array('//js/jquery.js', '//js/site.js')
+ *     )
+ * ));
+ * </code>
+ * 
+ * If the above code were placed in /serve.php, it would enable the URLs
+ * /serve.php/js and /serve.php/css
+ * 
+ * As a shortcut, the controller will replace "//" at the beginning
+ * of a filename with $_SERVER['DOCUMENT_ROOT'] . '/'.
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Controller_Groups extends Minify_Controller_Base {
+    
+    /**
+     * Set up groups of files as sources
+     * 
+     * @param array $options controller and Minify options
+     *
+     * 'groups': (required) array mapping PATH_INFO strings to arrays
+     * of complete file paths. @see Minify_Controller_Groups
+     *
+     * @return array Minify options
+     */
+    public function setupSources($options) {
+        // strip controller options
+        $groups = $options['groups'];
+        unset($options['groups']);
+        
+        // mod_fcgid places PATH_INFO in ORIG_PATH_INFO
+        $pi = isset($_SERVER['ORIG_PATH_INFO'])
+            ? substr($_SERVER['ORIG_PATH_INFO'], 1) 
+            : (isset($_SERVER['PATH_INFO'])
+                ? substr($_SERVER['PATH_INFO'], 1) 
+                : false
+            );
+        if (false === $pi || ! isset($groups[$pi])) {
+            // no PATH_INFO or not a valid group
+            $this->log("Missing PATH_INFO or no group set for \"$pi\"");
+            return $options;
+        }
+        $sources = array();
+        
+        $files = $groups[$pi];
+        // if $files is a single object, casting will break it
+        if (is_object($files)) {
+            $files = array($files);
+        } elseif (! is_array($files)) {
+            $files = (array)$files;
+        }
+        foreach ($files as $file) {
+            if ($file instanceof Minify_Source) {
+                $sources[] = $file;
+                continue;
+            }
+            if (0 === strpos($file, '//')) {
+                $file = $_SERVER['DOCUMENT_ROOT'] . substr($file, 1);
+            }
+            $realPath = realpath($file);
+            if (is_file($realPath)) {
+                $sources[] = new Minify_Source(array(
+                    'filepath' => $realPath
+                ));    
+            } else {
+                $this->log("The path \"{$file}\" could not be found (or was not a file)");
+                return $options;
+            }
+        }
+        if ($sources) {
+            $this->sources = $sources;
+        }
+        return $options;
+    }
+}
+
diff --git a/inc/lib/minify/Minify/Controller/MinApp.php b/inc/lib/minify/Minify/Controller/MinApp.php
new file mode 100755
index 00000000..d47c60d9
--- /dev/null
+++ b/inc/lib/minify/Minify/Controller/MinApp.php
@@ -0,0 +1,231 @@
+<?php
+/**
+ * Class Minify_Controller_MinApp  
+ * @package Minify
+ */
+
+require_once 'Minify/Controller/Base.php';
+
+/**
+ * Controller class for requests to /min/index.php
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Controller_MinApp extends Minify_Controller_Base {
+    
+    /**
+     * Set up groups of files as sources
+     * 
+     * @param array $options controller and Minify options
+     *
+     * @return array Minify options
+     */
+    public function setupSources($options) {
+        // filter controller options
+        $cOptions = array_merge(
+            array(
+                'allowDirs' => '//'
+                ,'groupsOnly' => false
+                ,'groups' => array()
+                ,'noMinPattern' => '@[-\\.]min\\.(?:js|css)$@i' // matched against basename
+            )
+            ,(isset($options['minApp']) ? $options['minApp'] : array())
+        );
+        unset($options['minApp']);
+        $sources = array();
+        $this->selectionId = '';
+        $firstMissingResource = null;
+        
+        if (isset($_GET['g'])) {
+            // add group(s)
+            $this->selectionId .= 'g=' . $_GET['g'];
+            $keys = explode(',', $_GET['g']);
+            if ($keys != array_unique($keys)) {
+                $this->log("Duplicate group key found.");
+                return $options;
+            }
+            $keys = explode(',', $_GET['g']);
+            foreach ($keys as $key) {
+                if (! isset($cOptions['groups'][$key])) {
+                    $this->log("A group configuration for \"{$key}\" was not found");
+                    return $options;
+                }
+                $files = $cOptions['groups'][$key];
+                // if $files is a single object, casting will break it
+                if (is_object($files)) {
+                    $files = array($files);
+                } elseif (! is_array($files)) {
+                    $files = (array)$files;
+                }
+                foreach ($files as $file) {
+                    if ($file instanceof Minify_Source) {
+                        $sources[] = $file;
+                        continue;
+                    }
+                    if (0 === strpos($file, '//')) {
+                        $file = $_SERVER['DOCUMENT_ROOT'] . substr($file, 1);
+                    }
+                    $realpath = realpath($file);
+                    if ($realpath && is_file($realpath)) {
+                        $sources[] = $this->_getFileSource($realpath, $cOptions);
+                    } else {
+                        $this->log("The path \"{$file}\" (realpath \"{$realpath}\") could not be found (or was not a file)");
+                        if (null === $firstMissingResource) {
+                            $firstMissingResource = basename($file);
+                            continue;
+                        } else {
+                            $secondMissingResource = basename($file);
+                            $this->log("More than one file was missing: '$firstMissingResource', '$secondMissingResource'");
+                            return $options;
+                        }
+                    }
+                }
+                if ($sources) {
+                    try {
+                        $this->checkType($sources[0]);
+                    } catch (Exception $e) {
+                        $this->log($e->getMessage());
+                        return $options;
+                    }
+                }
+            }
+        }
+        if (! $cOptions['groupsOnly'] && isset($_GET['f'])) {
+            // try user files
+            // The following restrictions are to limit the URLs that minify will
+            // respond to.
+            if (// verify at least one file, files are single comma separated, 
+                // and are all same extension
+                ! preg_match('/^[^,]+\\.(css|js)(?:,[^,]+\\.\\1)*$/', $_GET['f'], $m)
+                // no "//"
+                || strpos($_GET['f'], '//') !== false
+                // no "\"
+                || strpos($_GET['f'], '\\') !== false
+            ) {
+                $this->log("GET param 'f' was invalid");
+                return $options;
+            }
+            $ext = ".{$m[1]}";
+            try {
+                $this->checkType($m[1]);
+            } catch (Exception $e) {
+                $this->log($e->getMessage());
+                return $options;
+            }
+            $files = explode(',', $_GET['f']);
+            if ($files != array_unique($files)) {
+                $this->log("Duplicate files were specified");
+                return $options;
+            }
+            if (isset($_GET['b'])) {
+                // check for validity
+                if (preg_match('@^[^/]+(?:/[^/]+)*$@', $_GET['b'])
+                    && false === strpos($_GET['b'], '..')
+                    && $_GET['b'] !== '.') {
+                    // valid base
+                    $base = "/{$_GET['b']}/";       
+                } else {
+                    $this->log("GET param 'b' was invalid");
+                    return $options;
+                }
+            } else {
+                $base = '/';
+            }
+            $allowDirs = array();
+            foreach ((array)$cOptions['allowDirs'] as $allowDir) {
+                $allowDirs[] = realpath(str_replace('//', $_SERVER['DOCUMENT_ROOT'] . '/', $allowDir));
+            }
+            $basenames = array(); // just for cache id
+            foreach ($files as $file) {
+                $uri = $base . $file;
+                $path = $_SERVER['DOCUMENT_ROOT'] . $uri;
+                $realpath = realpath($path);
+                if (false === $realpath || ! is_file($realpath)) {
+                    $this->log("The path \"{$path}\" (realpath \"{$realpath}\") could not be found (or was not a file)");
+                    if (null === $firstMissingResource) {
+                        $firstMissingResource = $uri;
+                        continue;
+                    } else {
+                        $secondMissingResource = $uri;
+                        $this->log("More than one file was missing: '$firstMissingResource', '$secondMissingResource`'");
+                        return $options;
+                    }
+                }
+                try {
+                    parent::checkNotHidden($realpath);
+                    parent::checkAllowDirs($realpath, $allowDirs, $uri);
+                } catch (Exception $e) {
+                    $this->log($e->getMessage());
+                    return $options;
+                }
+                $sources[] = $this->_getFileSource($realpath, $cOptions);
+                $basenames[] = basename($realpath, $ext);
+            }
+            if ($this->selectionId) {
+                $this->selectionId .= '_f=';
+            }
+            $this->selectionId .= implode(',', $basenames) . $ext;
+        }
+        if ($sources) {
+            if (null !== $firstMissingResource) {
+                array_unshift($sources, new Minify_Source(array(
+                    'id' => 'missingFile'
+                    // should not cause cache invalidation
+                    ,'lastModified' => 0
+                    // due to caching, filename is unreliable.
+                    ,'content' => "/* Minify: at least one missing file. See " . Minify::URL_DEBUG . " */\n"
+                    ,'minifier' => ''
+                )));
+            }
+            $this->sources = $sources;
+        } else {
+            $this->log("No sources to serve");
+        }
+        return $options;
+    }
+
+    /**
+     * @param string $file
+     *
+     * @param array $cOptions
+     *
+     * @return Minify_Source
+     */
+    protected function _getFileSource($file, $cOptions)
+    {
+        $spec['filepath'] = $file;
+        if ($cOptions['noMinPattern']
+            && preg_match($cOptions['noMinPattern'], basename($file))) {
+            $spec['minifier'] = '';
+        }
+        return new Minify_Source($spec);
+    }
+
+    protected $_type = null;
+
+    /**
+     * Make sure that only source files of a single type are registered
+     *
+     * @param string $sourceOrExt
+     *
+     * @throws Exception
+     */
+    public function checkType($sourceOrExt)
+    {
+        if ($sourceOrExt === 'js') {
+            $type = Minify::TYPE_JS;
+        } elseif ($sourceOrExt === 'css') {
+            $type = Minify::TYPE_CSS;
+        } elseif ($sourceOrExt->contentType !== null) {
+            $type = $sourceOrExt->contentType;
+        } else {
+            return;
+        }
+        if ($this->_type === null) {
+            $this->_type = $type;
+        } elseif ($this->_type !== $type) {
+            throw new Exception('Content-Type mismatch');
+        }
+    }
+}
diff --git a/inc/lib/minify/Minify/Controller/Page.php b/inc/lib/minify/Minify/Controller/Page.php
new file mode 100755
index 00000000..de471e12
--- /dev/null
+++ b/inc/lib/minify/Minify/Controller/Page.php
@@ -0,0 +1,87 @@
+<?php
+/**
+ * Class Minify_Controller_Page  
+ * @package Minify
+ */
+
+require_once 'Minify/Controller/Base.php';
+
+/**
+ * Controller class for serving a single HTML page
+ * 
+ * @link http://code.google.com/p/minify/source/browse/trunk/web/examples/1/index.php#59
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Controller_Page extends Minify_Controller_Base {
+    
+    /**
+     * Set up source of HTML content
+     * 
+     * @param array $options controller and Minify options
+     * @return array Minify options
+     * 
+     * Controller options:
+     * 
+     * 'content': (required) HTML markup
+     * 
+     * 'id': (required) id of page (string for use in server-side caching)
+     * 
+     * 'lastModifiedTime': timestamp of when this content changed. This
+     * is recommended to allow both server and client-side caching.
+     * 
+     * 'minifyAll': should all CSS and Javascript blocks be individually 
+     * minified? (default false) 
+     *
+     * @todo Add 'file' option to read HTML file.
+     */
+    public function setupSources($options) {
+        if (isset($options['file'])) {
+            $sourceSpec = array(
+                'filepath' => $options['file']
+            );
+            $f = $options['file'];
+        } else {
+            // strip controller options
+            $sourceSpec = array(
+                'content' => $options['content']
+                ,'id' => $options['id']
+            );
+            $f = $options['id'];
+            unset($options['content'], $options['id']);
+        }
+        // something like "builder,index.php" or "directory,file.html"
+        $this->selectionId = strtr(substr($f, 1 + strlen(dirname(dirname($f)))), '/\\', ',,');
+
+        if (isset($options['minifyAll'])) {
+            // this will be the 2nd argument passed to Minify_HTML::minify()
+            $sourceSpec['minifyOptions'] = array(
+                'cssMinifier' => array('Minify_CSS', 'minify')
+                ,'jsMinifier' => array('JSMin', 'minify')
+            );
+            $this->_loadCssJsMinifiers = true;
+            unset($options['minifyAll']);
+        }
+        $this->sources[] = new Minify_Source($sourceSpec);
+        
+        $options['contentType'] = Minify::TYPE_HTML;
+        return $options;
+    }
+    
+    protected $_loadCssJsMinifiers = false;
+    
+    /**
+     * @see Minify_Controller_Base::loadMinifier()
+     */
+    public function loadMinifier($minifierCallback)
+    {
+        if ($this->_loadCssJsMinifiers) {
+            // Minify will not call for these so we must manually load
+            // them when Minify/HTML.php is called for.
+            require_once 'Minify/CSS.php';
+            require_once 'JSMin.php';
+        }
+        parent::loadMinifier($minifierCallback); // load Minify/HTML.php
+    }
+}
+
diff --git a/inc/lib/minify/Minify/Controller/Version1.php b/inc/lib/minify/Minify/Controller/Version1.php
new file mode 100755
index 00000000..5279d36d
--- /dev/null
+++ b/inc/lib/minify/Minify/Controller/Version1.php
@@ -0,0 +1,118 @@
+<?php
+/**
+ * Class Minify_Controller_Version1  
+ * @package Minify
+ */
+
+require_once 'Minify/Controller/Base.php';
+
+/**
+ * Controller class for emulating version 1 of minify.php (mostly a proof-of-concept)
+ * 
+ * <code>
+ * Minify::serve('Version1');
+ * </code>
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Controller_Version1 extends Minify_Controller_Base {
+    
+    /**
+     * Set up groups of files as sources
+     * 
+     * @param array $options controller and Minify options
+     * @return array Minify options
+     * 
+     */
+    public function setupSources($options) {
+        self::_setupDefines();
+        if (MINIFY_USE_CACHE) {
+            $cacheDir = defined('MINIFY_CACHE_DIR')
+                ? MINIFY_CACHE_DIR
+                : '';
+            Minify::setCache($cacheDir);
+        }
+        $options['badRequestHeader'] = 'HTTP/1.0 404 Not Found';
+        $options['contentTypeCharset'] = MINIFY_ENCODING;
+
+        // The following restrictions are to limit the URLs that minify will
+        // respond to. Ideally there should be only one way to reference a file.
+        if (! isset($_GET['files'])
+            // verify at least one file, files are single comma separated, 
+            // and are all same extension
+            || ! preg_match('/^[^,]+\\.(css|js)(,[^,]+\\.\\1)*$/', $_GET['files'], $m)
+            // no "//" (makes URL rewriting easier)
+            || strpos($_GET['files'], '//') !== false
+            // no "\"
+            || strpos($_GET['files'], '\\') !== false
+            // no "./"
+            || preg_match('/(?:^|[^\\.])\\.\\//', $_GET['files'])
+        ) {
+            return $options;
+        }
+        $extension = $m[1];
+        
+        $files = explode(',', $_GET['files']);
+        if (count($files) > MINIFY_MAX_FILES) {
+            return $options;
+        }
+        
+        // strings for prepending to relative/absolute paths
+        $prependRelPaths = dirname($_SERVER['SCRIPT_FILENAME'])
+            . DIRECTORY_SEPARATOR;
+        $prependAbsPaths = $_SERVER['DOCUMENT_ROOT'];
+        
+        $sources = array();
+        $goodFiles = array();
+        $hasBadSource = false;
+        
+        $allowDirs = isset($options['allowDirs'])
+            ? $options['allowDirs']
+            : MINIFY_BASE_DIR;
+        
+        foreach ($files as $file) {
+            // prepend appropriate string for abs/rel paths
+            $file = ($file[0] === '/' ? $prependAbsPaths : $prependRelPaths) . $file;
+            // make sure a real file!
+            $file = realpath($file);
+            // don't allow unsafe or duplicate files
+            if (parent::_fileIsSafe($file, $allowDirs) 
+                && !in_array($file, $goodFiles)) 
+            {
+                $goodFiles[] = $file;
+                $srcOptions = array(
+                    'filepath' => $file
+                );
+                $this->sources[] = new Minify_Source($srcOptions);
+            } else {
+                $hasBadSource = true;
+                break;
+            }
+        }
+        if ($hasBadSource) {
+            $this->sources = array();
+        }
+        if (! MINIFY_REWRITE_CSS_URLS) {
+            $options['rewriteCssUris'] = false;
+        }
+        return $options;
+    }
+    
+    private static function _setupDefines()
+    {
+        $defaults = array(
+            'MINIFY_BASE_DIR' => realpath($_SERVER['DOCUMENT_ROOT'])
+            ,'MINIFY_ENCODING' => 'utf-8'
+            ,'MINIFY_MAX_FILES' => 16
+            ,'MINIFY_REWRITE_CSS_URLS' => true
+            ,'MINIFY_USE_CACHE' => true
+        );
+        foreach ($defaults as $const => $val) {
+            if (! defined($const)) {
+                define($const, $val);
+            }
+        }
+    }
+}
+
diff --git a/inc/lib/minify/Minify/DebugDetector.php b/inc/lib/minify/Minify/DebugDetector.php
new file mode 100755
index 00000000..1def9748
--- /dev/null
+++ b/inc/lib/minify/Minify/DebugDetector.php
@@ -0,0 +1,26 @@
+<?php

+

+/**

+ * Detect whether request should be debugged

+ *

+ * @package Minify

+ * @author Stephen Clay <steve@mrclay.org>

+ */

+class Minify_DebugDetector {

+    public static function shouldDebugRequest($cookie, $get, $requestUri)

+    {

+        if (isset($get['debug'])) {

+            return true;

+        }

+        if (! empty($cookie['minifyDebug'])) {

+            foreach (preg_split('/\\s+/', $cookie['minifyDebug']) as $debugUri) {

+                $pattern = '@' . preg_quote($debugUri, '@') . '@i';

+                $pattern = str_replace(array('\\*', '\\?'), array('.*', '.'), $pattern);

+                if (preg_match($pattern, $requestUri)) {

+                    return true;

+                }

+            }

+        }

+        return false;

+    }

+}

diff --git a/inc/lib/minify/Minify/HTML.php b/inc/lib/minify/Minify/HTML.php
new file mode 100755
index 00000000..e9453ffb
--- /dev/null
+++ b/inc/lib/minify/Minify/HTML.php
@@ -0,0 +1,246 @@
+<?php

+/**

+ * Class Minify_HTML  

+ * @package Minify

+ */

+

+/**

+ * Compress HTML

+ *

+ * This is a heavy regex-based removal of whitespace, unnecessary comments and 

+ * tokens. IE conditional comments are preserved. There are also options to have

+ * STYLE and SCRIPT blocks compressed by callback functions. 

+ * 

+ * A test suite is available.

+ * 

+ * @package Minify

+ * @author Stephen Clay <steve@mrclay.org>

+ */

+class Minify_HTML {

+

+    /**

+     * "Minify" an HTML page

+     *

+     * @param string $html

+     *

+     * @param array $options

+     *

+     * 'cssMinifier' : (optional) callback function to process content of STYLE

+     * elements.

+     * 

+     * 'jsMinifier' : (optional) callback function to process content of SCRIPT

+     * elements. Note: the type attribute is ignored.

+     * 

+     * 'xhtml' : (optional boolean) should content be treated as XHTML1.0? If

+     * unset, minify will sniff for an XHTML doctype.

+     * 

+     * @return string

+     */

+    public static function minify($html, $options = array()) {

+        $min = new Minify_HTML($html, $options);

+        return $min->process();

+    }

+    

+    

+    /**

+     * Create a minifier object

+     *

+     * @param string $html

+     *

+     * @param array $options

+     *

+     * 'cssMinifier' : (optional) callback function to process content of STYLE

+     * elements.

+     * 

+     * 'jsMinifier' : (optional) callback function to process content of SCRIPT

+     * elements. Note: the type attribute is ignored.

+     * 

+     * 'xhtml' : (optional boolean) should content be treated as XHTML1.0? If

+     * unset, minify will sniff for an XHTML doctype.

+     * 

+     * @return null

+     */

+    public function __construct($html, $options = array())

+    {

+        $this->_html = str_replace("\r\n", "\n", trim($html));

+        if (isset($options['xhtml'])) {

+            $this->_isXhtml = (bool)$options['xhtml'];

+        }

+        if (isset($options['cssMinifier'])) {

+            $this->_cssMinifier = $options['cssMinifier'];

+        }

+        if (isset($options['jsMinifier'])) {

+            $this->_jsMinifier = $options['jsMinifier'];

+        }

+    }

+    

+    

+    /**

+     * Minify the markeup given in the constructor

+     * 

+     * @return string

+     */

+    public function process()

+    {

+        if ($this->_isXhtml === null) {

+            $this->_isXhtml = (false !== strpos($this->_html, '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML'));

+        }

+        

+        $this->_replacementHash = 'MINIFYHTML' . md5($_SERVER['REQUEST_TIME']);

+        $this->_placeholders = array();

+        

+        // replace SCRIPTs (and minify) with placeholders

+        $this->_html = preg_replace_callback(

+            '/(\\s*)<script(\\b[^>]*?>)([\\s\\S]*?)<\\/script>(\\s*)/i'

+            ,array($this, '_removeScriptCB')

+            ,$this->_html);

+        

+        // replace STYLEs (and minify) with placeholders

+        $this->_html = preg_replace_callback(

+            '/\\s*<style(\\b[^>]*>)([\\s\\S]*?)<\\/style>\\s*/i'

+            ,array($this, '_removeStyleCB')

+            ,$this->_html);

+        

+        // remove HTML comments (not containing IE conditional comments).

+        $this->_html = preg_replace_callback(

+            '/<!--([\\s\\S]*?)-->/'

+            ,array($this, '_commentCB')

+            ,$this->_html);

+        

+        // replace PREs with placeholders

+        $this->_html = preg_replace_callback('/\\s*<pre(\\b[^>]*?>[\\s\\S]*?<\\/pre>)\\s*/i'

+            ,array($this, '_removePreCB')

+            ,$this->_html);

+        

+        // replace TEXTAREAs with placeholders

+        $this->_html = preg_replace_callback(

+            '/\\s*<textarea(\\b[^>]*?>[\\s\\S]*?<\\/textarea>)\\s*/i'

+            ,array($this, '_removeTextareaCB')

+            ,$this->_html);

+        

+        // trim each line.

+        // @todo take into account attribute values that span multiple lines.

+        $this->_html = preg_replace('/^\\s+|\\s+$/m', '', $this->_html);

+        

+        // remove ws around block/undisplayed elements

+        $this->_html = preg_replace('/\\s+(<\\/?(?:area|base(?:font)?|blockquote|body'

+            .'|caption|center|cite|col(?:group)?|dd|dir|div|dl|dt|fieldset|form'

+            .'|frame(?:set)?|h[1-6]|head|hr|html|legend|li|link|map|menu|meta'

+            .'|ol|opt(?:group|ion)|p|param|t(?:able|body|head|d|h||r|foot|itle)'

+            .'|ul)\\b[^>]*>)/i', '$1', $this->_html);

+        

+        // remove ws outside of all elements

+        $this->_html = preg_replace(

+            '/>(\\s(?:\\s*))?([^<]+)(\\s(?:\s*))?</'

+            ,'>$1$2$3<'

+            ,$this->_html);

+        

+        // use newlines before 1st attribute in open tags (to limit line lengths)

+        $this->_html = preg_replace('/(<[a-z\\-]+)\\s+([^>]+>)/i', "$1\n$2", $this->_html);

+        

+        // fill placeholders

+        $this->_html = str_replace(

+            array_keys($this->_placeholders)

+            ,array_values($this->_placeholders)

+            ,$this->_html

+        );

+        // issue 229: multi-pass to catch scripts that didn't get replaced in textareas

+        $this->_html = str_replace(

+            array_keys($this->_placeholders)

+            ,array_values($this->_placeholders)

+            ,$this->_html

+        );

+        return $this->_html;

+    }

+    

+    protected function _commentCB($m)

+    {

+        return (0 === strpos($m[1], '[') || false !== strpos($m[1], '<!['))

+            ? $m[0]

+            : '';

+    }

+    

+    protected function _reservePlace($content)

+    {

+        $placeholder = '%' . $this->_replacementHash . count($this->_placeholders) . '%';

+        $this->_placeholders[$placeholder] = $content;

+        return $placeholder;

+    }

+

+    protected $_isXhtml = null;

+    protected $_replacementHash = null;

+    protected $_placeholders = array();

+    protected $_cssMinifier = null;

+    protected $_jsMinifier = null;

+

+    protected function _removePreCB($m)

+    {

+        return $this->_reservePlace("<pre{$m[1]}");

+    }

+    

+    protected function _removeTextareaCB($m)

+    {

+        return $this->_reservePlace("<textarea{$m[1]}");

+    }

+

+    protected function _removeStyleCB($m)

+    {

+        $openStyle = "<style{$m[1]}";

+        $css = $m[2];

+        // remove HTML comments

+        $css = preg_replace('/(?:^\\s*<!--|-->\\s*$)/', '', $css);

+        

+        // remove CDATA section markers

+        $css = $this->_removeCdata($css);

+        

+        // minify

+        $minifier = $this->_cssMinifier

+            ? $this->_cssMinifier

+            : 'trim';

+        $css = call_user_func($minifier, $css);

+        

+        return $this->_reservePlace($this->_needsCdata($css)

+            ? "{$openStyle}/*<![CDATA[*/{$css}/*]]>*/</style>"

+            : "{$openStyle}{$css}</style>"

+        );

+    }

+

+    protected function _removeScriptCB($m)

+    {

+        $openScript = "<script{$m[2]}";

+        $js = $m[3];

+        

+        // whitespace surrounding? preserve at least one space

+        $ws1 = ($m[1] === '') ? '' : ' ';

+        $ws2 = ($m[4] === '') ? '' : ' ';

+ 

+        // remove HTML comments (and ending "//" if present)

+        $js = preg_replace('/(?:^\\s*<!--\\s*|\\s*(?:\\/\\/)?\\s*-->\\s*$)/', '', $js);

+            

+        // remove CDATA section markers

+        $js = $this->_removeCdata($js);

+        

+        // minify

+        $minifier = $this->_jsMinifier

+            ? $this->_jsMinifier

+            : 'trim'; 

+        $js = call_user_func($minifier, $js);

+        

+        return $this->_reservePlace($this->_needsCdata($js)

+            ? "{$ws1}{$openScript}/*<![CDATA[*/{$js}/*]]>*/</script>{$ws2}"

+            : "{$ws1}{$openScript}{$js}</script>{$ws2}"

+        );

+    }

+

+    protected function _removeCdata($str)

+    {

+        return (false !== strpos($str, '<![CDATA['))

+            ? str_replace(array('<![CDATA[', ']]>'), '', $str)

+            : $str;

+    }

+    

+    protected function _needsCdata($str)

+    {

+        return ($this->_isXhtml && preg_match('/(?:[<&]|\\-\\-|\\]\\]>)/', $str));

+    }

+}

diff --git a/inc/lib/minify/Minify/HTML/Helper.php b/inc/lib/minify/Minify/HTML/Helper.php
new file mode 100755
index 00000000..807fdc9c
--- /dev/null
+++ b/inc/lib/minify/Minify/HTML/Helper.php
@@ -0,0 +1,193 @@
+<?php
+/**
+ * Class Minify_HTML_Helper
+ * @package Minify
+ */
+
+/**
+ * Helpers for writing Minfy URIs into HTML
+ *
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_HTML_Helper {
+    public $rewriteWorks = true;
+    public $minAppUri = '/min';
+    public $groupsConfigFile = '';
+
+    /*
+     * Get an HTML-escaped Minify URI for a group or set of files
+     * 
+     * @param mixed $keyOrFiles a group key or array of filepaths/URIs
+     * @param array $opts options:
+     *   'farExpires' : (default true) append a modified timestamp for cache revving
+     *   'debug' : (default false) append debug flag
+     *   'charset' : (default 'UTF-8') for htmlspecialchars
+     *   'minAppUri' : (default '/min') URI of min directory
+     *   'rewriteWorks' : (default true) does mod_rewrite work in min app?
+     *   'groupsConfigFile' : specify if different
+     * @return string
+     */
+    public static function getUri($keyOrFiles, $opts = array())
+    {
+        $opts = array_merge(array( // default options
+            'farExpires' => true
+            ,'debug' => false
+            ,'charset' => 'UTF-8'
+            ,'minAppUri' => '/min'
+            ,'rewriteWorks' => true
+            ,'groupsConfigFile' => ''
+        ), $opts);
+        $h = new self;
+        $h->minAppUri = $opts['minAppUri'];
+        $h->rewriteWorks = $opts['rewriteWorks'];
+        $h->groupsConfigFile = $opts['groupsConfigFile'];
+        if (is_array($keyOrFiles)) {
+            $h->setFiles($keyOrFiles, $opts['farExpires']);
+        } else {
+            $h->setGroup($keyOrFiles, $opts['farExpires']);
+        }
+        $uri = $h->getRawUri($opts['farExpires'], $opts['debug']);
+        return htmlspecialchars($uri, ENT_QUOTES, $opts['charset']);
+    }
+
+    /*
+     * Get non-HTML-escaped URI to minify the specified files
+     */
+    public function getRawUri($farExpires = true, $debug = false)
+    {
+        $path = rtrim($this->minAppUri, '/') . '/';
+        if (! $this->rewriteWorks) {
+            $path .= '?';
+        }
+        if (null === $this->_groupKey) {
+            // @todo: implement shortest uri
+            $path = self::_getShortestUri($this->_filePaths, $path);
+        } else {
+            $path .= "g=" . $this->_groupKey;
+        }
+        if ($debug) {
+            $path .= "&debug";
+        } elseif ($farExpires && $this->_lastModified) {
+            $path .= "&" . $this->_lastModified;
+        }
+        return $path;
+    }
+
+    public function setFiles($files, $checkLastModified = true)
+    {
+        $this->_groupKey = null;
+        if ($checkLastModified) {
+            $this->_lastModified = self::getLastModified($files);
+        }
+        // normalize paths like in /min/f=<paths>
+        foreach ($files as $k => $file) {
+            if (0 === strpos($file, '//')) {
+                $file = substr($file, 2);
+            } elseif (0 === strpos($file, '/')
+                      || 1 === strpos($file, ':\\')) {
+                $file = substr($file, strlen($_SERVER['DOCUMENT_ROOT']) + 1);
+            }
+            $file = strtr($file, '\\', '/');
+            $files[$k] = $file;
+        }
+        $this->_filePaths = $files;
+    }
+
+    public function setGroup($key, $checkLastModified = true)
+    {
+        $this->_groupKey = $key;
+        if ($checkLastModified) {
+            if (! $this->groupsConfigFile) {
+                $this->groupsConfigFile = dirname(dirname(dirname(dirname(__FILE__)))) . '/groupsConfig.php';
+            }
+            if (is_file($this->groupsConfigFile)) {
+                $gc = (require $this->groupsConfigFile);
+                if (isset($gc[$key])) {
+                    $this->_lastModified = self::getLastModified($gc[$key]);
+                }
+            }
+        }
+    }
+    
+    public static function getLastModified($sources, $lastModified = 0)
+    {
+        $max = $lastModified;
+        foreach ((array)$sources as $source) {
+            if (is_object($source) && isset($source->lastModified)) {
+                $max = max($max, $source->lastModified);
+            } elseif (is_string($source)) {
+                if (0 === strpos($source, '//')) {
+                    $source = $_SERVER['DOCUMENT_ROOT'] . substr($source, 1);
+                }
+                if (is_file($source)) {
+                    $max = max($max, filemtime($source));
+                }
+            }
+        }
+        return $max;
+    }
+
+    protected $_groupKey = null; // if present, URI will be like g=...
+    protected $_filePaths = array();
+    protected $_lastModified = null;
+
+    
+    /**
+     * In a given array of strings, find the character they all have at
+     * a particular index
+     *
+     * @param array $arr array of strings
+     * @param int $pos index to check
+     * @return mixed a common char or '' if any do not match
+     */
+    protected static function _getCommonCharAtPos($arr, $pos) {
+        $l = count($arr);
+        $c = $arr[0][$pos];
+        if ($c === '' || $l === 1)
+            return $c;
+        for ($i = 1; $i < $l; ++$i)
+            if ($arr[$i][$pos] !== $c)
+                return '';
+        return $c;
+    }
+
+    /**
+     * Get the shortest URI to minify the set of source files
+     *
+     * @param array $paths root-relative URIs of files
+     * @param string $minRoot root-relative URI of the "min" application
+     */
+    protected static function _getShortestUri($paths, $minRoot = '/min/') {
+        $pos = 0;
+        $base = '';
+        $c;
+        while (true) {
+            $c = self::_getCommonCharAtPos($paths, $pos);
+            if ($c === '') {
+                break;
+            } else {
+                $base .= $c;
+            }
+            ++$pos;
+        }
+        $base = preg_replace('@[^/]+$@', '', $base);
+        $uri = $minRoot . 'f=' . implode(',', $paths);
+        
+        if (substr($base, -1) === '/') {
+            // we have a base dir!
+            $basedPaths = $paths;
+            $l = count($paths);
+            for ($i = 0; $i < $l; ++$i) {
+                $basedPaths[$i] = substr($paths[$i], strlen($base));
+            }
+            $base = substr($base, 0, strlen($base) - 1);
+            $bUri = $minRoot . 'b=' . $base . '&f=' . implode(',', $basedPaths);
+
+            $uri = strlen($uri) < strlen($bUri)
+                ? $uri
+                : $bUri;
+        }
+        return $uri;
+    }
+}
diff --git a/inc/lib/minify/Minify/ImportProcessor.php b/inc/lib/minify/Minify/ImportProcessor.php
new file mode 100755
index 00000000..bdfae547
--- /dev/null
+++ b/inc/lib/minify/Minify/ImportProcessor.php
@@ -0,0 +1,216 @@
+<?php

+/**

+ * Class Minify_ImportProcessor

+ * @package Minify

+ */

+

+/**

+ * Linearize a CSS/JS file by including content specified by CSS import

+ * declarations. In CSS files, relative URIs are fixed.

+ *

+ * @imports will be processed regardless of where they appear in the source

+ * files; i.e. @imports commented out or in string content will still be

+ * processed!

+ *

+ * This has a unit test but should be considered "experimental".

+ *

+ * @package Minify

+ * @author Stephen Clay <steve@mrclay.org>

+ * @author Simon Schick <simonsimcity@gmail.com>

+ */

+class Minify_ImportProcessor {

+

+    public static $filesIncluded = array();

+

+    public static function process($file)

+    {

+        self::$filesIncluded = array();

+        self::$_isCss = (strtolower(substr($file, -4)) === '.css');

+        $obj = new Minify_ImportProcessor(dirname($file));

+        return $obj->_getContent($file);

+    }

+

+    // allows callback funcs to know the current directory

+    private $_currentDir = null;

+

+    // allows callback funcs to know the directory of the file that inherits this one

+    private $_previewsDir = null;

+

+    // allows _importCB to write the fetched content back to the obj

+    private $_importedContent = '';

+

+    private static $_isCss = null;

+

+    /**

+     * @param String $currentDir

+     * @param String $previewsDir Is only used internally

+     */

+    private function __construct($currentDir, $previewsDir = "")

+    {

+        $this->_currentDir = $currentDir;

+        $this->_previewsDir = $previewsDir;

+    }

+

+    private function _getContent($file, $is_imported = false)

+    {

+        $file = realpath($file);

+        if (! $file

+            || in_array($file, self::$filesIncluded)

+            || false === ($content = @file_get_contents($file))

+        ) {

+            // file missing, already included, or failed read

+            return '';

+        }

+        self::$filesIncluded[] = realpath($file);

+        $this->_currentDir = dirname($file);

+

+        // remove UTF-8 BOM if present

+        if (pack("CCC",0xef,0xbb,0xbf) === substr($content, 0, 3)) {

+            $content = substr($content, 3);

+        }

+        // ensure uniform EOLs

+        $content = str_replace("\r\n", "\n", $content);

+

+        // process @imports

+        $content = preg_replace_callback(

+            '/

+                @import\\s+

+                (?:url\\(\\s*)?      # maybe url(

+                [\'"]?               # maybe quote

+                (.*?)                # 1 = URI

+                [\'"]?               # maybe end quote

+                (?:\\s*\\))?         # maybe )

+                ([a-zA-Z,\\s]*)?     # 2 = media list

+                ;                    # end token

+            /x'

+            ,array($this, '_importCB')

+            ,$content

+        );

+

+        // You only need to rework the import-path if the script is imported

+        if (self::$_isCss && $is_imported) {

+            // rewrite remaining relative URIs

+            $content = preg_replace_callback(

+                '/url\\(\\s*([^\\)\\s]+)\\s*\\)/'

+                ,array($this, '_urlCB')

+                ,$content

+            );

+        }

+

+        return $this->_importedContent . $content;

+    }

+

+    private function _importCB($m)

+    {

+        $url = $m[1];

+        $mediaList = preg_replace('/\\s+/', '', $m[2]);

+

+        if (strpos($url, '://') > 0) {

+            // protocol, leave in place for CSS, comment for JS

+            return self::$_isCss

+                ? $m[0]

+                : "/* Minify_ImportProcessor will not include remote content */";

+        }

+        if ('/' === $url[0]) {

+            // protocol-relative or root path

+            $url = ltrim($url, '/');

+            $file = realpath($_SERVER['DOCUMENT_ROOT']) . DIRECTORY_SEPARATOR

+                . strtr($url, '/', DIRECTORY_SEPARATOR);

+        } else {

+            // relative to current path

+            $file = $this->_currentDir . DIRECTORY_SEPARATOR

+                . strtr($url, '/', DIRECTORY_SEPARATOR);

+        }

+        $obj = new Minify_ImportProcessor(dirname($file), $this->_currentDir);

+        $content = $obj->_getContent($file, true);

+        if ('' === $content) {

+            // failed. leave in place for CSS, comment for JS

+            return self::$_isCss

+                ? $m[0]

+                : "/* Minify_ImportProcessor could not fetch '{$file}' */";

+        }

+        return (!self::$_isCss || preg_match('@(?:^$|\\ball\\b)@', $mediaList))

+            ? $content

+            : "@media {$mediaList} {\n{$content}\n}\n";

+    }

+

+    private function _urlCB($m)

+    {

+        // $m[1] is either quoted or not

+        $quote = ($m[1][0] === "'" || $m[1][0] === '"')

+            ? $m[1][0]

+            : '';

+        $url = ($quote === '')

+            ? $m[1]

+            : substr($m[1], 1, strlen($m[1]) - 2);

+        if ('/' !== $url[0]) {

+            if (strpos($url, '//') > 0) {

+                // probably starts with protocol, do not alter

+            } else {

+                // prepend path with current dir separator (OS-independent)

+                $path = $this->_currentDir

+                    . DIRECTORY_SEPARATOR . strtr($url, '/', DIRECTORY_SEPARATOR);

+                // update the relative path by the directory of the file that imported this one

+                $url = self::getPathDiff(realpath($this->_previewsDir), $path);

+            }

+        }

+        return "url({$quote}{$url}{$quote})";

+    }

+

+    /**

+     * @param string $from

+     * @param string $to

+     * @param string $ps

+     * @return string

+     */

+    private function getPathDiff($from, $to, $ps = DIRECTORY_SEPARATOR)

+    {

+        $realFrom = $this->truepath($from);

+        $realTo = $this->truepath($to);

+

+        $arFrom = explode($ps, rtrim($realFrom, $ps));

+        $arTo = explode($ps, rtrim($realTo, $ps));

+        while (count($arFrom) && count($arTo) && ($arFrom[0] == $arTo[0]))

+        {

+            array_shift($arFrom);

+            array_shift($arTo);

+        }

+        return str_pad("", count($arFrom) * 3, '..' . $ps) . implode($ps, $arTo);

+    }

+

+    /**

+     * This function is to replace PHP's extremely buggy realpath().

+     * @param string $path The original path, can be relative etc.

+     * @return string The resolved path, it might not exist.

+     * @see http://stackoverflow.com/questions/4049856/replace-phps-realpath

+     */

+    function truepath($path)

+    {

+        // whether $path is unix or not

+        $unipath = strlen($path) == 0 || $path{0} != '/';

+        // attempts to detect if path is relative in which case, add cwd

+        if (strpos($path, ':') === false && $unipath)

+            $path = $this->_currentDir . DIRECTORY_SEPARATOR . $path;

+

+        // resolve path parts (single dot, double dot and double delimiters)

+        $path = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $path);

+        $parts = array_filter(explode(DIRECTORY_SEPARATOR, $path), 'strlen');

+        $absolutes = array();

+        foreach ($parts as $part) {

+            if ('.' == $part)

+                continue;

+            if ('..' == $part) {

+                array_pop($absolutes);

+            } else {

+                $absolutes[] = $part;

+            }

+        }

+        $path = implode(DIRECTORY_SEPARATOR, $absolutes);

+        // resolve any symlinks

+        if (file_exists($path) && linkinfo($path) > 0)

+            $path = readlink($path);

+        // put initial separator that could have been lost

+        $path = !$unipath ? '/' . $path : $path;

+        return $path;

+    }

+}

diff --git a/inc/lib/minify/Minify/JS/ClosureCompiler.php b/inc/lib/minify/Minify/JS/ClosureCompiler.php
new file mode 100755
index 00000000..f4ed5bdb
--- /dev/null
+++ b/inc/lib/minify/Minify/JS/ClosureCompiler.php
@@ -0,0 +1,133 @@
+<?php
+/**
+ * Class Minify_JS_ClosureCompiler
+ * @package Minify
+ */
+
+/**
+ * Minify Javascript using Google's Closure Compiler API
+ *
+ * @link http://code.google.com/closure/compiler/
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ *
+ * @todo can use a stream wrapper to unit test this?
+ */
+class Minify_JS_ClosureCompiler {
+    const URL = 'http://closure-compiler.appspot.com/compile';
+
+    /**
+     * Minify Javascript code via HTTP request to the Closure Compiler API
+     *
+     * @param string $js input code
+     * @param array $options unused at this point
+     * @return string
+     */
+    public static function minify($js, array $options = array())
+    {
+        $obj = new self($options);
+        return $obj->min($js);
+    }
+
+    /**
+     *
+     * @param array $options
+     *
+     * fallbackFunc : default array($this, 'fallback');
+     */
+    public function __construct(array $options = array())
+    {
+        $this->_fallbackFunc = isset($options['fallbackMinifier'])
+            ? $options['fallbackMinifier']
+            : array($this, '_fallback');
+    }
+
+    public function min($js)
+    {
+        $postBody = $this->_buildPostBody($js);
+        $bytes = (function_exists('mb_strlen') && ((int)ini_get('mbstring.func_overload') & 2))
+            ? mb_strlen($postBody, '8bit')
+            : strlen($postBody);
+        if ($bytes > 200000) {
+            throw new Minify_JS_ClosureCompiler_Exception(
+                'POST content larger than 200000 bytes'
+            );
+        }
+        $response = $this->_getResponse($postBody);
+        if (preg_match('/^Error\(\d\d?\):/', $response)) {
+            if (is_callable($this->_fallbackFunc)) {
+                $response = "/* Received errors from Closure Compiler API:\n$response"
+                          . "\n(Using fallback minifier)\n*/\n";
+                $response .= call_user_func($this->_fallbackFunc, $js);
+            } else {
+                throw new Minify_JS_ClosureCompiler_Exception($response);
+            }
+        }
+        if ($response === '') {
+            $errors = $this->_getResponse($this->_buildPostBody($js, true));
+            throw new Minify_JS_ClosureCompiler_Exception($errors);
+        }
+        return $response;
+    }
+    
+    protected $_fallbackFunc = null;
+
+    protected function _getResponse($postBody)
+    {
+        $allowUrlFopen = preg_match('/1|yes|on|true/i', ini_get('allow_url_fopen'));
+        if ($allowUrlFopen) {
+            $contents = file_get_contents(self::URL, false, stream_context_create(array(
+                'http' => array(
+                    'method' => 'POST',
+                    'header' => 'Content-type: application/x-www-form-urlencoded',
+                    'content' => $postBody,
+                    'max_redirects' => 0,
+                    'timeout' => 15,
+                )
+            )));
+        } elseif (defined('CURLOPT_POST')) {
+            $ch = curl_init(self::URL);
+            curl_setopt($ch, CURLOPT_POST, true);
+            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+            curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-type: application/x-www-form-urlencoded'));
+            curl_setopt($ch, CURLOPT_POSTFIELDS, $postBody);
+            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
+            curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
+            $contents = curl_exec($ch);
+            curl_close($ch);
+        } else {
+            throw new Minify_JS_ClosureCompiler_Exception(
+               "Could not make HTTP request: allow_url_open is false and cURL not available"
+            );
+        }
+        if (false === $contents) {
+            throw new Minify_JS_ClosureCompiler_Exception(
+               "No HTTP response from server"
+            );
+        }
+        return trim($contents);
+    }
+
+    protected function _buildPostBody($js, $returnErrors = false)
+    {
+        return http_build_query(array(
+            'js_code' => $js,
+            'output_info' => ($returnErrors ? 'errors' : 'compiled_code'),
+            'output_format' => 'text',
+            'compilation_level' => 'SIMPLE_OPTIMIZATIONS'
+        ), null, '&');
+    }
+
+    /**
+     * Default fallback function if CC API fails
+     * @param string $js
+     * @return string
+     */
+    protected function _fallback($js)
+    {
+        require_once 'JSMin.php';
+        return JSMin::minify($js);
+    }
+}
+
+class Minify_JS_ClosureCompiler_Exception extends Exception {}
diff --git a/inc/lib/minify/Minify/Lines.php b/inc/lib/minify/Minify/Lines.php
new file mode 100755
index 00000000..ca8afa1b
--- /dev/null
+++ b/inc/lib/minify/Minify/Lines.php
@@ -0,0 +1,137 @@
+<?php
+/**
+ * Class Minify_Lines  
+ * @package Minify
+ */
+
+/**
+ * Add line numbers in C-style comments for easier debugging of combined content
+ *
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ * @author Adam Pedersen (Issue 55 fix)
+ */
+class Minify_Lines {
+
+    /**
+     * Add line numbers in C-style comments
+     *
+     * This uses a very basic parser easily fooled by comment tokens inside
+     * strings or regexes, but, otherwise, generally clean code will not be 
+     * mangled. URI rewriting can also be performed.
+     *
+     * @param string $content
+     * 
+     * @param array $options available options:
+     * 
+     * 'id': (optional) string to identify file. E.g. file name/path
+     *
+     * 'currentDir': (default null) if given, this is assumed to be the
+     * directory of the current CSS file. Using this, minify will rewrite
+     * all relative URIs in import/url declarations to correctly point to
+     * the desired files, and prepend a comment with debugging information about
+     * this process.
+     * 
+     * @return string 
+     */
+    public static function minify($content, $options = array()) 
+    {
+        $id = (isset($options['id']) && $options['id'])
+            ? $options['id']
+            : '';
+        $content = str_replace("\r\n", "\n", $content);
+
+        // Hackily rewrite strings with XPath expressions that are
+        // likely to throw off our dumb parser (for Prototype 1.6.1).
+        $content = str_replace('"/*"', '"/"+"*"', $content);
+        $content = preg_replace('@([\'"])(\\.?//?)\\*@', '$1$2$1+$1*', $content);
+
+        $lines = explode("\n", $content);
+        $numLines = count($lines);
+        // determine left padding
+        $padTo = strlen((string) $numLines); // e.g. 103 lines = 3 digits
+        $inComment = false;
+        $i = 0;
+        $newLines = array();
+        while (null !== ($line = array_shift($lines))) {
+            if (('' !== $id) && (0 == $i % 50)) {
+                array_push($newLines, '', "/* {$id} */", '');
+            }
+            ++$i;
+            $newLines[] = self::_addNote($line, $i, $inComment, $padTo);
+            $inComment = self::_eolInComment($line, $inComment);
+        }
+        $content = implode("\n", $newLines) . "\n";
+        
+        // check for desired URI rewriting
+        if (isset($options['currentDir'])) {
+            require_once 'Minify/CSS/UriRewriter.php';
+            Minify_CSS_UriRewriter::$debugText = '';
+            $content = Minify_CSS_UriRewriter::rewrite(
+                 $content
+                ,$options['currentDir']
+                ,isset($options['docRoot']) ? $options['docRoot'] : $_SERVER['DOCUMENT_ROOT']
+                ,isset($options['symlinks']) ? $options['symlinks'] : array()
+            );
+            $content = "/* Minify_CSS_UriRewriter::\$debugText\n\n" 
+                     . Minify_CSS_UriRewriter::$debugText . "*/\n"
+                     . $content;
+        }
+        
+        return $content;
+    }
+    
+    /**
+     * Is the parser within a C-style comment at the end of this line?
+     *
+     * @param string $line current line of code
+     * 
+     * @param bool $inComment was the parser in a comment at the
+     * beginning of the line?
+     *
+     * @return bool
+     */
+    private static function _eolInComment($line, $inComment)
+    {
+        while (strlen($line)) {
+            $search = $inComment
+                ? '*/'
+                : '/*';
+            $pos = strpos($line, $search);
+            if (false === $pos) {
+                return $inComment;
+            } else {
+                if ($pos == 0
+                    || ($inComment
+                        ? substr($line, $pos, 3)
+                        : substr($line, $pos-1, 3)) != '*/*')
+                {
+                        $inComment = ! $inComment;
+                }
+                $line = substr($line, $pos + 2);
+            }
+        }
+        return $inComment;
+    }
+    
+    /**
+     * Prepend a comment (or note) to the given line
+     *
+     * @param string $line current line of code
+     *
+     * @param string $note content of note/comment
+     * 
+     * @param bool $inComment was the parser in a comment at the
+     * beginning of the line?
+     *
+     * @param int $padTo minimum width of comment
+     * 
+     * @return string
+     */
+    private static function _addNote($line, $note, $inComment, $padTo)
+    {
+        return $inComment
+            ? '/* ' . str_pad($note, $padTo, ' ', STR_PAD_RIGHT) . ' *| ' . $line
+            : '/* ' . str_pad($note, $padTo, ' ', STR_PAD_RIGHT) . ' */ ' . $line;
+    }
+}
diff --git a/inc/lib/minify/Minify/Logger.php b/inc/lib/minify/Minify/Logger.php
new file mode 100755
index 00000000..8eb72f45
--- /dev/null
+++ b/inc/lib/minify/Minify/Logger.php
@@ -0,0 +1,47 @@
+<?php
+/**
+ * Class Minify_Logger  
+ * @package Minify
+ */
+
+/** 
+ * Message logging class
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ *
+ * @todo lose this singleton! pass log object in Minify::serve and distribute to others
+ */
+class Minify_Logger {
+
+    /**
+     * Set logger object. 
+     *
+     * The object should have a method "log" that accepts a value as 1st argument and
+     * an optional string label as the 2nd.
+     *
+     * @param mixed $obj or a "falsey" value to disable
+     * @return null
+     */
+    public static function setLogger($obj = null) {
+        self::$_logger = $obj
+            ? $obj
+            : null;
+    }
+    
+    /**
+     * Pass a message to the logger (if set)
+     *
+     * @param string $msg message to log
+     * @return null
+     */
+    public static function log($msg, $label = 'Minify') {
+        if (! self::$_logger) return;
+        self::$_logger->log($msg, $label);
+    }
+    
+    /**
+     * @var mixed logger object (like FirePHP) or null (i.e. no logger available)
+     */
+    private static $_logger = null;
+}
diff --git a/inc/lib/minify/Minify/Packer.php b/inc/lib/minify/Minify/Packer.php
new file mode 100755
index 00000000..949c3eef
--- /dev/null
+++ b/inc/lib/minify/Minify/Packer.php
@@ -0,0 +1,37 @@
+<?php
+/**
+ * Class Minify_Packer
+ *
+ * To use this class you must first download the PHP port of Packer
+ * and place the file "class.JavaScriptPacker.php" in /lib (or your
+ * include_path). 
+ * @link http://joliclic.free.fr/php/javascript-packer/en/
+ *
+ * Be aware that, as long as HTTP encoding is used, scripts minified with JSMin
+ * will provide better client-side performance, as they need not be unpacked in
+ * client-side code.
+ * 
+ * @package Minify  
+ */
+
+if (false === (@include 'class.JavaScriptPacker.php')) {
+    trigger_error(
+        'The script "class.JavaScriptPacker.php" is required. Please see: http:'
+        .'//code.google.com/p/minify/source/browse/trunk/min/lib/Minify/Packer.php'
+        ,E_USER_ERROR
+    );
+}
+
+/**
+ * Minify Javascript using Dean Edward's Packer
+ * 
+ * @package Minify
+ */
+class Minify_Packer {
+    public static function minify($code, $options = array())
+    {
+        // @todo: set encoding options based on $options :)
+        $packer = new JavascriptPacker($code, 'Normal', true, false);
+        return trim($packer->pack());
+    }
+}
diff --git a/inc/lib/minify/Minify/Source.php b/inc/lib/minify/Minify/Source.php
new file mode 100755
index 00000000..5a85d10d
--- /dev/null
+++ b/inc/lib/minify/Minify/Source.php
@@ -0,0 +1,187 @@
+<?php
+/**
+ * Class Minify_Source  
+ * @package Minify
+ */
+
+/** 
+ * A content source to be minified by Minify. 
+ * 
+ * This allows per-source minification options and the mixing of files with
+ * content from other sources.
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_Source {
+
+    /**
+     * @var int time of last modification
+     */
+    public $lastModified = null;
+    
+    /**
+     * @var callback minifier function specifically for this source.
+     */
+    public $minifier = null;
+    
+    /**
+     * @var array minification options specific to this source.
+     */
+    public $minifyOptions = null;
+
+    /**
+     * @var string full path of file
+     */
+    public $filepath = null;
+    
+    /**
+     * @var string HTTP Content Type (Minify requires one of the constants Minify::TYPE_*)
+     */
+    public $contentType = null;
+    
+    /**
+     * Create a Minify_Source
+     * 
+     * In the $spec array(), you can either provide a 'filepath' to an existing
+     * file (existence will not be checked!) or give 'id' (unique string for 
+     * the content), 'content' (the string content) and 'lastModified' 
+     * (unixtime of last update).
+     * 
+     * As a shortcut, the controller will replace "//" at the beginning
+     * of a filepath with $_SERVER['DOCUMENT_ROOT'] . '/'.
+     *
+     * @param array $spec options
+     */
+    public function __construct($spec)
+    {
+        if (isset($spec['filepath'])) {
+            if (0 === strpos($spec['filepath'], '//')) {
+                $spec['filepath'] = $_SERVER['DOCUMENT_ROOT'] . substr($spec['filepath'], 1);
+            }
+            $segments = explode('.', $spec['filepath']);
+            $ext = strtolower(array_pop($segments));
+            switch ($ext) {
+            case 'js'   : $this->contentType = 'application/x-javascript';
+                          break;
+            case 'css'  : $this->contentType = 'text/css';
+                          break;
+            case 'htm'  : // fallthrough
+            case 'html' : $this->contentType = 'text/html';
+                          break;
+            }
+            $this->filepath = $spec['filepath'];
+            $this->_id = $spec['filepath'];
+            $this->lastModified = filemtime($spec['filepath'])
+                // offset for Windows uploaders with out of sync clocks
+                + round(Minify::$uploaderHoursBehind * 3600);
+        } elseif (isset($spec['id'])) {
+            $this->_id = 'id::' . $spec['id'];
+            if (isset($spec['content'])) {
+                $this->_content = $spec['content'];
+            } else {
+                $this->_getContentFunc = $spec['getContentFunc'];
+            }
+            $this->lastModified = isset($spec['lastModified'])
+                ? $spec['lastModified']
+                : time();
+        }
+        if (isset($spec['contentType'])) {
+            $this->contentType = $spec['contentType'];
+        }
+        if (isset($spec['minifier'])) {
+            $this->minifier = $spec['minifier'];
+        }
+        if (isset($spec['minifyOptions'])) {
+            $this->minifyOptions = $spec['minifyOptions'];
+        }
+    }
+    
+    /**
+     * Get content
+     *
+     * @return string
+     */
+    public function getContent()
+    {
+        $content = (null !== $this->filepath)
+            ? file_get_contents($this->filepath)
+            : ((null !== $this->_content)
+                ? $this->_content
+                : call_user_func($this->_getContentFunc, $this->_id)
+            );
+        // remove UTF-8 BOM if present
+        return (pack("CCC",0xef,0xbb,0xbf) === substr($content, 0, 3))
+            ? substr($content, 3)
+            : $content;
+    }
+    
+    /**
+     * Get id
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        return $this->_id;
+    }
+    
+    /**
+     * Verifies a single minification call can handle all sources
+     *
+     * @param array $sources Minify_Source instances
+     * 
+     * @return bool true iff there no sources with specific minifier preferences.
+     */
+    public static function haveNoMinifyPrefs($sources)
+    {
+        foreach ($sources as $source) {
+            if (null !== $source->minifier
+                || null !== $source->minifyOptions) {
+                return false;
+            }
+        }
+        return true;
+    }
+    
+    /**
+     * Get unique string for a set of sources
+     *
+     * @param array $sources Minify_Source instances
+     * 
+     * @return string
+     */
+    public static function getDigest($sources)
+    {
+        foreach ($sources as $source) {
+            $info[] = array(
+                $source->_id, $source->minifier, $source->minifyOptions
+            );
+        }
+        return md5(serialize($info));
+    }
+    
+    /**
+     * Get content type from a group of sources
+     * 
+     * This is called if the user doesn't pass in a 'contentType' options  
+     * 
+     * @param array $sources Minify_Source instances
+     * 
+     * @return string content type. e.g. 'text/css'
+     */
+    public static function getContentType($sources)
+    {
+        foreach ($sources as $source) {
+            if ($source->contentType !== null) {
+                return $source->contentType;
+            }
+        }
+        return 'text/plain';
+    }
+    
+    protected $_content = null;
+    protected $_getContentFunc = null;
+    protected $_id = null;
+}
+
diff --git a/inc/lib/minify/Minify/YUI/CssCompressor.java b/inc/lib/minify/Minify/YUI/CssCompressor.java
new file mode 100755
index 00000000..3fb497a9
--- /dev/null
+++ b/inc/lib/minify/Minify/YUI/CssCompressor.java
@@ -0,0 +1,382 @@
+/*
+ * YUI Compressor
+ * http://developer.yahoo.com/yui/compressor/
+ * Author: Julien Lecomte -  http://www.julienlecomte.net/
+ * Author: Isaac Schlueter - http://foohack.com/
+ * Author: Stoyan Stefanov - http://phpied.com/
+ * Copyright (c) 2011 Yahoo! Inc.  All rights reserved.
+ * The copyrights embodied in the content of this file are licensed
+ * by Yahoo! Inc. under the BSD (revised) open source license.
+ */
+package com.yahoo.platform.yui.compressor;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.io.Writer;
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+import java.util.ArrayList;
+
+public class CssCompressor {
+
+    private StringBuffer srcsb = new StringBuffer();
+
+    public CssCompressor(Reader in) throws IOException {
+        // Read the stream...
+        int c;
+        while ((c = in.read()) != -1) {
+            srcsb.append((char) c);
+        }
+    }
+
+    // Leave data urls alone to increase parse performance.
+    protected String extractDataUrls(String css, ArrayList preservedTokens) {
+
+    	int maxIndex = css.length() - 1;
+        int appendIndex = 0;
+
+    	StringBuffer sb = new StringBuffer();
+
+        Pattern p = Pattern.compile("url\\(\\s*([\"']?)data\\:");
+        Matcher m = p.matcher(css);
+        
+        /* 
+         * Since we need to account for non-base64 data urls, we need to handle 
+         * ' and ) being part of the data string. Hence switching to indexOf,
+         * to determine whether or not we have matching string terminators and
+         * handling sb appends directly, instead of using matcher.append* methods.
+         */
+
+        while (m.find()) {
+
+        	int startIndex = m.start() + 4;  	// "url(".length()
+    		String terminator = m.group(1);     // ', " or empty (not quoted)
+    		
+    		if (terminator.length() == 0) {
+    		 	terminator = ")";
+    		}
+
+    		boolean foundTerminator = false;
+
+    		int endIndex = m.end() - 1;
+    		while(foundTerminator == false && endIndex+1 <= maxIndex) {
+    			endIndex = css.indexOf(terminator, endIndex+1);
+
+    			if ((endIndex > 0) && (css.charAt(endIndex-1) != '\\')) {
+    				foundTerminator = true;
+    				if (!")".equals(terminator)) {
+    					endIndex = css.indexOf(")", endIndex); 
+    				}
+    			}
+    		}
+
+    		// Enough searching, start moving stuff over to the buffer
+			sb.append(css.substring(appendIndex, m.start()));
+
+    		if (foundTerminator) {
+    			String token = css.substring(startIndex, endIndex);
+    			token = token.replaceAll("\\s+", "");
+	    		preservedTokens.add(token);
+
+	    		String preserver = "url(___YUICSSMIN_PRESERVED_TOKEN_" + (preservedTokens.size() - 1) + "___)";
+	    		sb.append(preserver);
+
+	    		appendIndex = endIndex + 1;
+    		} else {
+    			// No end terminator found, re-add the whole match. Should we throw/warn here?
+    			sb.append(css.substring(m.start(), m.end()));
+    			appendIndex = m.end();
+    		}
+        }
+
+        sb.append(css.substring(appendIndex));
+
+        return sb.toString();
+    }
+
+    public void compress(Writer out, int linebreakpos)
+            throws IOException {
+
+        Pattern p;
+        Matcher m;
+        String css = srcsb.toString();
+
+        int startIndex = 0;
+        int endIndex = 0;
+        int i = 0;
+        int max = 0;
+        ArrayList preservedTokens = new ArrayList(0);
+        ArrayList comments = new ArrayList(0);
+        String token;
+        int totallen = css.length();
+        String placeholder;
+
+        css = this.extractDataUrls(css, preservedTokens);
+
+        StringBuffer sb = new StringBuffer(css);
+
+        // collect all comment blocks...
+        while ((startIndex = sb.indexOf("/*", startIndex)) >= 0) {
+            endIndex = sb.indexOf("*/", startIndex + 2);
+            if (endIndex < 0) {
+                endIndex = totallen;
+            }
+
+            token = sb.substring(startIndex + 2, endIndex);
+            comments.add(token);
+            sb.replace(startIndex + 2, endIndex, "___YUICSSMIN_PRESERVE_CANDIDATE_COMMENT_" + (comments.size() - 1) + "___");
+            startIndex += 2;
+        }
+        css = sb.toString();
+
+        // preserve strings so their content doesn't get accidentally minified
+        sb = new StringBuffer();
+        p = Pattern.compile("(\"([^\\\\\"]|\\\\.|\\\\)*\")|(\'([^\\\\\']|\\\\.|\\\\)*\')");
+        m = p.matcher(css);
+        while (m.find()) {
+            token = m.group();
+            char quote = token.charAt(0);
+            token = token.substring(1, token.length() - 1);
+
+            // maybe the string contains a comment-like substring?
+            // one, maybe more? put'em back then
+            if (token.indexOf("___YUICSSMIN_PRESERVE_CANDIDATE_COMMENT_") >= 0) {
+                for (i = 0, max = comments.size(); i < max; i += 1) {
+                    token = token.replace("___YUICSSMIN_PRESERVE_CANDIDATE_COMMENT_" + i + "___", comments.get(i).toString());
+                }
+            }
+
+            // minify alpha opacity in filter strings
+            token = token.replaceAll("(?i)progid:DXImageTransform.Microsoft.Alpha\\(Opacity=", "alpha(opacity=");
+
+            preservedTokens.add(token);
+            String preserver = quote + "___YUICSSMIN_PRESERVED_TOKEN_" + (preservedTokens.size() - 1) + "___" + quote;
+            m.appendReplacement(sb, preserver);
+        }
+        m.appendTail(sb);
+        css = sb.toString();
+
+
+        // strings are safe, now wrestle the comments
+        for (i = 0, max = comments.size(); i < max; i += 1) {
+
+            token = comments.get(i).toString();
+            placeholder = "___YUICSSMIN_PRESERVE_CANDIDATE_COMMENT_" + i + "___";
+
+            // ! in the first position of the comment means preserve
+            // so push to the preserved tokens while stripping the !
+            if (token.startsWith("!")) {
+                preservedTokens.add(token);
+                css = css.replace(placeholder,  "___YUICSSMIN_PRESERVED_TOKEN_" + (preservedTokens.size() - 1) + "___");
+                continue;
+            }
+
+            // \ in the last position looks like hack for Mac/IE5
+            // shorten that to /*\*/ and the next one to /**/
+            if (token.endsWith("\\")) {
+                preservedTokens.add("\\");
+                css = css.replace(placeholder,  "___YUICSSMIN_PRESERVED_TOKEN_" + (preservedTokens.size() - 1) + "___");
+                i = i + 1; // attn: advancing the loop
+                preservedTokens.add("");
+                css = css.replace("___YUICSSMIN_PRESERVE_CANDIDATE_COMMENT_" + i + "___",  "___YUICSSMIN_PRESERVED_TOKEN_" + (preservedTokens.size() - 1) + "___");
+                continue;
+            }
+
+            // keep empty comments after child selectors (IE7 hack)
+            // e.g. html >/**/ body
+            if (token.length() == 0) {
+                startIndex = css.indexOf(placeholder);
+                if (startIndex > 2) {
+                    if (css.charAt(startIndex - 3) == '>') {
+                        preservedTokens.add("");
+                        css = css.replace(placeholder,  "___YUICSSMIN_PRESERVED_TOKEN_" + (preservedTokens.size() - 1) + "___");
+                    }
+                }
+            }
+
+            // in all other cases kill the comment
+            css = css.replace("/*" + placeholder + "*/", "");
+        }
+
+
+        // Normalize all whitespace strings to single spaces. Easier to work with that way.
+        css = css.replaceAll("\\s+", " ");
+
+        // Remove the spaces before the things that should not have spaces before them.
+        // But, be careful not to turn "p :link {...}" into "p:link{...}"
+        // Swap out any pseudo-class colons with the token, and then swap back.
+        sb = new StringBuffer();
+        p = Pattern.compile("(^|\\})(([^\\{:])+:)+([^\\{]*\\{)");
+        m = p.matcher(css);
+        while (m.find()) {
+            String s = m.group();
+            s = s.replaceAll(":", "___YUICSSMIN_PSEUDOCLASSCOLON___");
+            s = s.replaceAll( "\\\\", "\\\\\\\\" ).replaceAll( "\\$", "\\\\\\$" );
+            m.appendReplacement(sb, s);
+        }
+        m.appendTail(sb);
+        css = sb.toString();
+        // Remove spaces before the things that should not have spaces before them.
+        css = css.replaceAll("\\s+([!{};:>+\\(\\)\\],])", "$1");
+        // bring back the colon
+        css = css.replaceAll("___YUICSSMIN_PSEUDOCLASSCOLON___", ":");
+
+        // retain space for special IE6 cases
+        css = css.replaceAll(":first\\-(line|letter)(\\{|,)", ":first-$1 $2");
+
+        // no space after the end of a preserved comment
+        css = css.replaceAll("\\*/ ", "*/");
+
+        // If there is a @charset, then only allow one, and push to the top of the file.
+        css = css.replaceAll("^(.*)(@charset \"[^\"]*\";)", "$2$1");
+        css = css.replaceAll("^(\\s*@charset [^;]+;\\s*)+", "$1");
+
+        // Put the space back in some cases, to support stuff like
+        // @media screen and (-webkit-min-device-pixel-ratio:0){
+        css = css.replaceAll("\\band\\(", "and (");
+
+        // Remove the spaces after the things that should not have spaces after them.
+        css = css.replaceAll("([!{}:;>+\\(\\[,])\\s+", "$1");
+
+        // remove unnecessary semicolons
+        css = css.replaceAll(";+}", "}");
+
+        // Replace 0(px,em,%) with 0.
+        css = css.replaceAll("([\\s:])(0)(px|em|%|in|cm|mm|pc|pt|ex)", "$1$2");
+
+        // Replace 0 0 0 0; with 0.
+        css = css.replaceAll(":0 0 0 0(;|})", ":0$1");
+        css = css.replaceAll(":0 0 0(;|})", ":0$1");
+        css = css.replaceAll(":0 0(;|})", ":0$1");
+
+
+        // Replace background-position:0; with background-position:0 0;
+        // same for transform-origin
+        sb = new StringBuffer();
+        p = Pattern.compile("(?i)(background-position|transform-origin|webkit-transform-origin|moz-transform-origin|o-transform-origin|ms-transform-origin):0(;|})");
+        m = p.matcher(css);
+        while (m.find()) {
+            m.appendReplacement(sb, m.group(1).toLowerCase() + ":0 0" + m.group(2));
+        }
+        m.appendTail(sb);
+        css = sb.toString();
+
+        // Replace 0.6 to .6, but only when preceded by : or a white-space
+        css = css.replaceAll("(:|\\s)0+\\.(\\d+)", "$1.$2");
+
+        // Shorten colors from rgb(51,102,153) to #336699
+        // This makes it more likely that it'll get further compressed in the next step.
+        p = Pattern.compile("rgb\\s*\\(\\s*([0-9,\\s]+)\\s*\\)");
+        m = p.matcher(css);
+        sb = new StringBuffer();
+        while (m.find()) {
+            String[] rgbcolors = m.group(1).split(",");
+            StringBuffer hexcolor = new StringBuffer("#");
+            for (i = 0; i < rgbcolors.length; i++) {
+                int val = Integer.parseInt(rgbcolors[i]);
+                if (val < 16) {
+                    hexcolor.append("0");
+                }
+                hexcolor.append(Integer.toHexString(val));
+            }
+            m.appendReplacement(sb, hexcolor.toString());
+        }
+        m.appendTail(sb);
+        css = sb.toString();
+
+        // Shorten colors from #AABBCC to #ABC. Note that we want to make sure
+        // the color is not preceded by either ", " or =. Indeed, the property
+        //     filter: chroma(color="#FFFFFF");
+        // would become
+        //     filter: chroma(color="#FFF");
+        // which makes the filter break in IE.
+        // We also want to make sure we're only compressing #AABBCC patterns inside { }, not id selectors ( #FAABAC {} )
+        // We also want to avoid compressing invalid values (e.g. #AABBCCD to #ABCD)
+        p = Pattern.compile("(\\=\\s*?[\"']?)?" + "#([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])" + "(:?\\}|[^0-9a-fA-F{][^{]*?\\})");
+
+        m = p.matcher(css);
+        sb = new StringBuffer();
+        int index = 0;
+
+        while (m.find(index)) {
+
+        	sb.append(css.substring(index, m.start()));
+
+        	boolean isFilter = (m.group(1) != null && !"".equals(m.group(1))); 
+
+        	if (isFilter) {
+        		// Restore, as is. Compression will break filters
+        		sb.append(m.group(1) + "#" + m.group(2) + m.group(3) + m.group(4) + m.group(5) + m.group(6) + m.group(7));
+        	} else {
+        		if( m.group(2).equalsIgnoreCase(m.group(3)) &&
+                    m.group(4).equalsIgnoreCase(m.group(5)) &&
+                    m.group(6).equalsIgnoreCase(m.group(7))) {
+
+	        		// #AABBCC pattern
+	                sb.append("#" + (m.group(3) + m.group(5) + m.group(7)).toLowerCase());
+
+        		} else {
+
+        			// Non-compressible color, restore, but lower case.
+        			sb.append("#" + (m.group(2) + m.group(3) + m.group(4) + m.group(5) + m.group(6) + m.group(7)).toLowerCase());
+        		}
+            }
+
+        	index = m.end(7);
+        }
+
+        sb.append(css.substring(index));
+        css = sb.toString();
+
+        // border: none -> border:0
+        sb = new StringBuffer();
+        p = Pattern.compile("(?i)(border|border-top|border-right|border-bottom|border-right|outline|background):none(;|})");
+        m = p.matcher(css);
+        while (m.find()) {
+            m.appendReplacement(sb, m.group(1).toLowerCase() + ":0" + m.group(2));
+        }
+        m.appendTail(sb);
+        css = sb.toString();
+
+        // shorter opacity IE filter
+        css = css.replaceAll("(?i)progid:DXImageTransform.Microsoft.Alpha\\(Opacity=", "alpha(opacity=");
+
+        // Remove empty rules.
+        css = css.replaceAll("[^\\}\\{/;]+\\{\\}", "");
+
+        // TODO: Should this be after we re-insert tokens. These could alter the break points. However then
+        // we'd need to make sure we don't break in the middle of a string etc.
+        if (linebreakpos >= 0) {
+            // Some source control tools don't like it when files containing lines longer
+            // than, say 8000 characters, are checked in. The linebreak option is used in
+            // that case to split long lines after a specific column.
+            i = 0;
+            int linestartpos = 0;
+            sb = new StringBuffer(css);
+            while (i < sb.length()) {
+                char c = sb.charAt(i++);
+                if (c == '}' && i - linestartpos > linebreakpos) {
+                    sb.insert(i, '\n');
+                    linestartpos = i;
+                }
+            }
+
+            css = sb.toString();
+        }
+
+        // Replace multiple semi-colons in a row by a single one
+        // See SF bug #1980989
+        css = css.replaceAll(";;+", ";");
+
+        // restore preserved comments and strings
+        for(i = 0, max = preservedTokens.size(); i < max; i++) {
+            css = css.replace("___YUICSSMIN_PRESERVED_TOKEN_" + i + "___", preservedTokens.get(i).toString());
+        }
+
+        // Trim the final string (for any leading or trailing white spaces)
+        css = css.trim();
+
+        // Write the output...
+        out.write(css);
+    }
+}
diff --git a/inc/lib/minify/Minify/YUI/CssCompressor.php b/inc/lib/minify/Minify/YUI/CssCompressor.php
new file mode 100755
index 00000000..ae3443d4
--- /dev/null
+++ b/inc/lib/minify/Minify/YUI/CssCompressor.php
@@ -0,0 +1,171 @@
+<?php
+/**
+ * Class Minify_YUI_CssCompressor 
+ * @package Minify
+ *
+ * YUI Compressor
+ * Author: Julien Lecomte -  http://www.julienlecomte.net/
+ * Author: Isaac Schlueter - http://foohack.com/
+ * Author: Stoyan Stefanov - http://phpied.com/
+ * Author: Steve Clay      - http://www.mrclay.org/ (PHP port)
+ * Copyright (c) 2009 Yahoo! Inc.  All rights reserved.
+ * The copyrights embodied in the content of this file are licensed
+ * by Yahoo! Inc. under the BSD (revised) open source license.
+ */
+
+/**
+ * Compress CSS (incomplete DO NOT USE)
+ * 
+ * @see https://github.com/yui/yuicompressor/blob/master/src/com/yahoo/platform/yui/compressor/CssCompressor.java
+ *
+ * @package Minify
+ */
+class Minify_YUI_CssCompressor {
+
+    /**
+     * Minify a CSS string
+     *
+     * @param string $css
+     *
+     * @return string
+     */
+    public function compress($css, $linebreakpos = 0)
+    {
+        $css = str_replace("\r\n", "\n", $css);
+
+        /**
+         * @todo comment removal
+         * @todo re-port from newer Java version
+         */
+
+        // Normalize all whitespace strings to single spaces. Easier to work with that way.
+        $css = preg_replace('@\s+@', ' ', $css);
+
+        // Make a pseudo class for the Box Model Hack
+        $css = preg_replace("@\"\\\\\"}\\\\\"\"@", "___PSEUDOCLASSBMH___", $css);
+
+        // Remove the spaces before the things that should not have spaces before them.
+        // But, be careful not to turn "p :link {...}" into "p:link{...}"
+        // Swap out any pseudo-class colons with the token, and then swap back.
+        $css = preg_replace_callback("@(^|\\})(([^\\{:])+:)+([^\\{]*\\{)@", array($this, '_removeSpacesCB'), $css);
+
+        $css = preg_replace("@\\s+([!{};:>+\\(\\)\\],])@", "$1", $css);
+        $css = str_replace("___PSEUDOCLASSCOLON___", ":", $css);
+
+        // Remove the spaces after the things that should not have spaces after them.
+        $css = preg_replace("@([!{}:;>+\\(\\[,])\\s+@", "$1", $css);
+
+        // Add the semicolon where it's missing.
+        $css = preg_replace("@([^;\\}])}@", "$1;}", $css);
+
+        // Replace 0(px,em,%) with 0.
+        $css = preg_replace("@([\\s:])(0)(px|em|%|in|cm|mm|pc|pt|ex)@", "$1$2", $css);
+
+        // Replace 0 0 0 0; with 0.
+        $css = str_replace(":0 0 0 0;", ":0;", $css);
+        $css = str_replace(":0 0 0;", ":0;", $css);
+        $css = str_replace(":0 0;", ":0;", $css);
+
+        // Replace background-position:0; with background-position:0 0;
+        $css = str_replace("background-position:0;", "background-position:0 0;", $css);
+
+        // Replace 0.6 to .6, but only when preceded by : or a white-space
+        $css = preg_replace("@(:|\\s)0+\\.(\\d+)@", "$1.$2", $css);
+
+        // Shorten colors from rgb(51,102,153) to #336699
+        // This makes it more likely that it'll get further compressed in the next step.
+        $css = preg_replace_callback("@rgb\\s*\\(\\s*([0-9,\\s]+)\\s*\\)@", array($this, '_shortenRgbCB'), $css);
+
+        // Shorten colors from #AABBCC to #ABC. Note that we want to make sure
+        // the color is not preceded by either ", " or =. Indeed, the property
+        //     filter: chroma(color="#FFFFFF");
+        // would become
+        //     filter: chroma(color="#FFF");
+        // which makes the filter break in IE.
+        $css = preg_replace_callback("@([^\"'=\\s])(\\s*)#([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])([0-9a-fA-F])@", array($this, '_shortenHexCB'), $css);
+
+        // Remove empty rules.
+        $css = preg_replace("@[^\\}]+\\{;\\}@", "", $css);
+
+        $linebreakpos = isset($this->_options['linebreakpos'])
+            ? $this->_options['linebreakpos']
+            : 0;
+
+        if ($linebreakpos > 0) {
+            // Some source control tools don't like it when files containing lines longer
+            // than, say 8000 characters, are checked in. The linebreak option is used in
+            // that case to split long lines after a specific column.
+            $i = 0;
+            $linestartpos = 0;
+            $sb = $css;
+
+            // make sure strlen returns byte count
+            $mbIntEnc = null;
+            if (function_exists('mb_strlen') && ((int)ini_get('mbstring.func_overload') & 2)) {
+                $mbIntEnc = mb_internal_encoding();
+                mb_internal_encoding('8bit');
+            }
+            $sbLength = strlen($css);
+            while ($i < $sbLength) {
+                $c = $sb[$i++];
+                if ($c === '}' && $i - $linestartpos > $linebreakpos) {
+                    $sb = substr_replace($sb, "\n", $i, 0);
+                    $sbLength++;
+                    $linestartpos = $i;
+                }
+            }
+            $css = $sb;
+
+            // undo potential mb_encoding change
+            if ($mbIntEnc !== null) {
+                mb_internal_encoding($mbIntEnc);
+            }
+        }
+
+        // Replace the pseudo class for the Box Model Hack
+        $css = str_replace("___PSEUDOCLASSBMH___", "\"\\\\\"}\\\\\"\"", $css);
+
+        // Replace multiple semi-colons in a row by a single one
+        // See SF bug #1980989
+        $css = preg_replace("@;;+@", ";", $css);
+
+        // prevent triggering IE6 bug: http://www.crankygeek.com/ie6pebug/
+        $css = preg_replace('/:first-l(etter|ine)\\{/', ':first-l$1 {', $css);
+
+        // Trim the final string (for any leading or trailing white spaces)
+        $css = trim($css);
+
+        return $css;
+    }
+
+    protected function _removeSpacesCB($m)
+    {
+        return str_replace(':', '___PSEUDOCLASSCOLON___', $m[0]);
+    }
+
+    protected function _shortenRgbCB($m)
+    {
+        $rgbcolors = explode(',', $m[1]);
+        $hexcolor = '#';
+        for ($i = 0; $i < count($rgbcolors); $i++) {
+            $val = round($rgbcolors[$i]);
+            if ($val < 16) {
+                $hexcolor .= '0';
+            }
+            $hexcolor .= dechex($val);
+        }
+        return $hexcolor;
+    }
+
+    protected function _shortenHexCB($m)
+    {
+        // Test for AABBCC pattern
+        if ((strtolower($m[3])===strtolower($m[4])) &&
+                (strtolower($m[5])===strtolower($m[6])) &&
+                (strtolower($m[7])===strtolower($m[8]))) {
+            return $m[1] . $m[2] . "#" . $m[3] . $m[5] . $m[7];
+        } else {
+            return $m[0];
+        }
+    }
+}
\ No newline at end of file
diff --git a/inc/lib/minify/Minify/YUICompressor.php b/inc/lib/minify/Minify/YUICompressor.php
new file mode 100755
index 00000000..c5bd8a1e
--- /dev/null
+++ b/inc/lib/minify/Minify/YUICompressor.php
@@ -0,0 +1,148 @@
+<?php
+/**
+ * Class Minify_YUICompressor 
+ * @package Minify
+ */
+
+/**
+ * Compress Javascript/CSS using the YUI Compressor
+ * 
+ * You must set $jarFile and $tempDir before calling the minify functions.
+ * Also, depending on your shell's environment, you may need to specify
+ * the full path to java in $javaExecutable or use putenv() to setup the
+ * Java environment.
+ * 
+ * <code>
+ * Minify_YUICompressor::$jarFile = '/path/to/yuicompressor-2.3.5.jar';
+ * Minify_YUICompressor::$tempDir = '/tmp';
+ * $code = Minify_YUICompressor::minifyJs(
+ *   $code
+ *   ,array('nomunge' => true, 'line-break' => 1000)
+ * );
+ * </code>
+ * 
+ * @todo unit tests, $options docs
+ * 
+ * @package Minify
+ * @author Stephen Clay <steve@mrclay.org>
+ */
+class Minify_YUICompressor {
+
+    /**
+     * Filepath of the YUI Compressor jar file. This must be set before
+     * calling minifyJs() or minifyCss().
+     *
+     * @var string
+     */
+    public static $jarFile = null;
+    
+    /**
+     * Writable temp directory. This must be set before calling minifyJs()
+     * or minifyCss().
+     *
+     * @var string
+     */
+    public static $tempDir = null;
+    
+    /**
+     * Filepath of "java" executable (may be needed if not in shell's PATH)
+     *
+     * @var string
+     */
+    public static $javaExecutable = 'java';
+    
+    /**
+     * Minify a Javascript string
+     * 
+     * @param string $js
+     * 
+     * @param array $options (verbose is ignored)
+     * 
+     * @see http://www.julienlecomte.net/yuicompressor/README
+     * 
+     * @return string 
+     */
+    public static function minifyJs($js, $options = array())
+    {
+        return self::_minify('js', $js, $options);
+    }
+    
+    /**
+     * Minify a CSS string
+     * 
+     * @param string $css
+     * 
+     * @param array $options (verbose is ignored)
+     * 
+     * @see http://www.julienlecomte.net/yuicompressor/README
+     * 
+     * @return string 
+     */
+    public static function minifyCss($css, $options = array())
+    {
+        return self::_minify('css', $css, $options);
+    }
+    
+    private static function _minify($type, $content, $options)
+    {
+        self::_prepare();
+        if (! ($tmpFile = tempnam(self::$tempDir, 'yuic_'))) {
+            throw new Exception('Minify_YUICompressor : could not create temp file.');
+        }
+        file_put_contents($tmpFile, $content);
+        exec(self::_getCmd($options, $type, $tmpFile), $output, $result_code);
+        unlink($tmpFile);
+        if ($result_code != 0) {
+            throw new Exception('Minify_YUICompressor : YUI compressor execution failed.');
+        }
+        return implode("\n", $output);
+    }
+    
+    private static function _getCmd($userOptions, $type, $tmpFile)
+    {
+        $o = array_merge(
+            array(
+                'charset' => ''
+                ,'line-break' => 5000
+                ,'type' => $type
+                ,'nomunge' => false
+                ,'preserve-semi' => false
+                ,'disable-optimizations' => false
+            )
+            ,$userOptions
+        );
+        $cmd = self::$javaExecutable . ' -jar ' . escapeshellarg(self::$jarFile)
+             . " --type {$type}"
+             . (preg_match('/^[\\da-zA-Z0-9\\-]+$/', $o['charset'])
+                ? " --charset {$o['charset']}" 
+                : '')
+             . (is_numeric($o['line-break']) && $o['line-break'] >= 0
+                ? ' --line-break ' . (int)$o['line-break']
+                : '');
+        if ($type === 'js') {
+            foreach (array('nomunge', 'preserve-semi', 'disable-optimizations') as $opt) {
+                $cmd .= $o[$opt] 
+                    ? " --{$opt}"
+                    : '';
+            }
+        }
+        return $cmd . ' ' . escapeshellarg($tmpFile);
+    }
+    
+    private static function _prepare()
+    {
+        if (! is_file(self::$jarFile)) {
+            throw new Exception('Minify_YUICompressor : $jarFile('.self::$jarFile.') is not a valid file.');
+        }
+        if (! is_executable(self::$jarFile)) {
+            throw new Exception('Minify_YUICompressor : $jarFile('.self::$jarFile.') is not executable.');
+        }
+        if (! is_dir(self::$tempDir)) {
+            throw new Exception('Minify_YUICompressor : $tempDir('.self::$tempDir.') is not a valid direcotry.');
+        }
+        if (! is_writable(self::$tempDir)) {
+            throw new Exception('Minify_YUICompressor : $tempDir('.self::$tempDir.') is not writable.');
+        }
+    }
+}
+
diff --git a/inc/lib/minify/MrClay/Cli.php b/inc/lib/minify/MrClay/Cli.php
new file mode 100755
index 00000000..ac201582
--- /dev/null
+++ b/inc/lib/minify/MrClay/Cli.php
@@ -0,0 +1,381 @@
+<?php 
+
+namespace MrClay;
+
+/**
+ * Forms a front controller for a console app, handling and validating arguments (options)
+ *
+ * Instantiate, add arguments, then call validate(). Afterwards, the user's valid arguments
+ * and their values will be available in $cli->values.
+ *
+ * You may also specify that some arguments be used to provide input/output. By communicating
+ * solely through the file pointers provided by openInput()/openOutput(), you can make your
+ * app more flexible to end users.
+ *
+ * @author Steve Clay <steve@mrclay.org>
+ * @license http://www.opensource.org/licenses/mit-license.php  MIT License
+ */
+class Cli {
+    
+    /**
+     * @var array validation errors
+     */
+    public $errors = array();
+    
+    /**
+     * @var array option values available after validation.
+     * 
+     * E.g. array(
+     *      'a' => false              // option was missing
+     *     ,'b' => true               // option was present
+     *     ,'c' => "Hello"            // option had value
+     *     ,'f' => "/home/user/file"  // file path from root
+     *     ,'f.raw' => "~/file"       // file path as given to option
+     * )
+     */
+    public $values = array();
+
+    /**
+     * @var array
+     */
+    public $moreArgs = array();
+
+    /**
+     * @var array
+     */
+    public $debug = array();
+
+    /**
+     * @var bool The user wants help info
+     */
+    public $isHelpRequest = false;
+
+    /**
+     * @var array of Cli\Arg
+     */
+    protected $_args = array();
+
+    /**
+     * @var resource
+     */
+    protected $_stdin = null;
+
+    /**
+     * @var resource
+     */
+    protected $_stdout = null;
+    
+    /**
+     * @param bool $exitIfNoStdin (default true) Exit() if STDIN is not defined
+     */
+    public function __construct($exitIfNoStdin = true)
+    {
+        if ($exitIfNoStdin && ! defined('STDIN')) {
+            exit('This script is for command-line use only.');
+        }
+        if (isset($GLOBALS['argv'][1])
+             && ($GLOBALS['argv'][1] === '-?' || $GLOBALS['argv'][1] === '--help')) {
+            $this->isHelpRequest = true;
+        }
+    }
+
+    /**
+     * @param Cli\Arg|string $letter
+     * @return Cli\Arg
+     */
+    public function addOptionalArg($letter)
+    {
+        return $this->addArgument($letter, false);
+    }
+
+    /**
+     * @param Cli\Arg|string $letter
+     * @return Cli\Arg
+     */
+    public function addRequiredArg($letter)
+    {
+        return $this->addArgument($letter, true);
+    }
+
+    /**
+     * @param string $letter
+     * @param bool $required
+     * @param Cli\Arg|null $arg
+     * @return Cli\Arg
+     * @throws \InvalidArgumentException
+     */
+    public function addArgument($letter, $required, Cli\Arg $arg = null)
+    {
+        if (! preg_match('/^[a-zA-Z]$/', $letter)) {
+            throw new \InvalidArgumentException('$letter must be in [a-zA-z]');
+        }
+        if (! $arg) {
+            $arg = new Cli\Arg($required);
+        }
+        $this->_args[$letter] = $arg;
+        return $arg;
+    }
+
+    /**
+     * @param string $letter
+     * @return Cli\Arg|null
+     */
+    public function getArgument($letter)
+    {
+        return isset($this->_args[$letter]) ? $this->_args[$letter] : null;
+    }
+
+    /*
+     * Read and validate options
+     * 
+     * @return bool true if all options are valid
+     */
+    public function validate()
+    {
+        $options = '';
+        $this->errors = array();
+        $this->values = array();
+        $this->_stdin = null;
+        
+        if ($this->isHelpRequest) {
+            return false;
+        }
+        
+        $lettersUsed = '';
+        foreach ($this->_args as $letter => $arg) {
+            /* @var Cli\Arg $arg  */
+            $options .= $letter;
+            $lettersUsed .= $letter;
+            
+            if ($arg->mayHaveValue || $arg->mustHaveValue) {
+                $options .= ($arg->mustHaveValue ? ':' : '::');
+            }
+        }
+
+        $this->debug['argv'] = $GLOBALS['argv'];
+        $argvCopy = array_slice($GLOBALS['argv'], 1);
+        $o = getopt($options);
+        $this->debug['getopt_options'] = $options;
+        $this->debug['getopt_return'] = $o;
+
+        foreach ($this->_args as $letter => $arg) {
+            /* @var Cli\Arg $arg  */
+            $this->values[$letter] = false;
+            if (isset($o[$letter])) {
+                if (is_bool($o[$letter])) {
+
+                    // remove from argv copy
+                    $k = array_search("-$letter", $argvCopy);
+                    if ($k !== false) {
+                        array_splice($argvCopy, $k, 1);
+                    }
+
+                    if ($arg->mustHaveValue) {
+                        $this->addError($letter, "Missing value");
+                    } else {
+                        $this->values[$letter] = true;
+                    }
+                } else {
+                    // string
+                    $this->values[$letter] = $o[$letter];
+                    $v =& $this->values[$letter];
+
+                    // remove from argv copy
+                    // first look for -ovalue or -o=value
+                    $pattern = "/^-{$letter}=?" . preg_quote($v, '/') . "$/";
+                    $foundInArgv = false;
+                    foreach ($argvCopy as $k => $argV) {
+                        if (preg_match($pattern, $argV)) {
+                            array_splice($argvCopy, $k, 1);
+                            $foundInArgv = true;
+                            break;
+                        }
+                    }
+                    if (! $foundInArgv) {
+                        // space separated
+                        $k = array_search("-$letter", $argvCopy);
+                        if ($k !== false) {
+                            array_splice($argvCopy, $k, 2);
+                        }
+                    }
+                    
+                    // check that value isn't really another option
+                    if (strlen($lettersUsed) > 1) {
+                        $pattern = "/^-[" . str_replace($letter, '', $lettersUsed) . "]/i";
+                        if (preg_match($pattern, $v)) {
+                            $this->addError($letter, "Value was read as another option: %s", $v);
+                            return false;
+                        }    
+                    }
+                    if ($arg->assertFile || $arg->assertDir) {
+                        if ($v[0] !== '/' && $v[0] !== '~') {
+                            $this->values["$letter.raw"] = $v;
+                            $v = getcwd() . "/$v";
+                        }
+                    }
+                    if ($arg->assertFile) {
+                        if ($arg->useAsInfile) {
+                            $this->_stdin = $v;
+                        } elseif ($arg->useAsOutfile) {
+                            $this->_stdout = $v;
+                        }
+                        if ($arg->assertReadable && ! is_readable($v)) {
+                            $this->addError($letter, "File not readable: %s", $v);
+                            continue;
+                        }
+                        if ($arg->assertWritable) {
+                            if (is_file($v)) {
+                                if (! is_writable($v)) {
+                                    $this->addError($letter, "File not writable: %s", $v);
+                                }
+                            } else {
+                                if (! is_writable(dirname($v))) {
+                                    $this->addError($letter, "Directory not writable: %s", dirname($v));
+                                }
+                            }
+                        }
+                    } elseif ($arg->assertDir && $arg->assertWritable && ! is_writable($v)) {
+                        $this->addError($letter, "Directory not readable: %s", $v);
+                    }
+                }
+            } else {
+                if ($arg->isRequired()) {
+                    $this->addError($letter, "Missing");
+                }
+            }
+        }
+        $this->moreArgs = $argvCopy;
+        reset($this->moreArgs);
+        return empty($this->errors);
+    }
+
+    /**
+     * Get the full paths of file(s) passed in as unspecified arguments
+     *
+     * @return array
+     */
+    public function getPathArgs()
+    {
+        $r = $this->moreArgs;
+        foreach ($r as $k => $v) {
+            if ($v[0] !== '/' && $v[0] !== '~') {
+                $v = getcwd() . "/$v";
+                $v = str_replace('/./', '/', $v);
+                do {
+                    $v = preg_replace('@/[^/]+/\\.\\./@', '/', $v, 1, $changed);
+                } while ($changed);
+                $r[$k] = $v;
+            }
+        }
+        return $r;
+    }
+    
+    /**
+     * Get a short list of errors with options
+     * 
+     * @return string
+     */
+    public function getErrorReport()
+    {
+        if (empty($this->errors)) {
+            return '';
+        }
+        $r = "Some arguments did not pass validation:\n";
+        foreach ($this->errors as $letter => $arr) {
+            $r .= "  $letter : " . implode(', ', $arr) . "\n";
+        }
+        $r .= "\n";
+        return $r;
+    }
+
+    /**
+     * @return string
+     */
+    public function getArgumentsListing()
+    {
+        $r = "\n";
+        foreach ($this->_args as $letter => $arg) {
+            /* @var Cli\Arg $arg  */
+            $desc = $arg->getDescription();
+            $flag = " -$letter ";
+            if ($arg->mayHaveValue) {
+                $flag .= "[VAL]";
+            } elseif ($arg->mustHaveValue) {
+                $flag .= "VAL";
+            }
+            if ($arg->assertFile) {
+                $flag = str_replace('VAL', 'FILE', $flag);
+            } elseif ($arg->assertDir) {
+                $flag = str_replace('VAL', 'DIR', $flag);
+            }
+            if ($arg->isRequired()) {
+                $desc = "(required) $desc";
+            }
+            $flag = str_pad($flag, 12, " ", STR_PAD_RIGHT);
+            $desc = wordwrap($desc, 70);
+            $r .= $flag . str_replace("\n", "\n            ", $desc) . "\n\n";
+        }
+        return $r;
+    }
+    
+    /**
+     * Get resource of open input stream. May be STDIN or a file pointer
+     * to the file specified by an option with 'STDIN'.
+     *
+     * @return resource
+     */
+    public function openInput()
+    {
+        if (null === $this->_stdin) {
+            return STDIN;
+        } else {
+            $this->_stdin = fopen($this->_stdin, 'rb');
+            return $this->_stdin;
+        }
+    }
+    
+    public function closeInput()
+    {
+        if (null !== $this->_stdin) {
+            fclose($this->_stdin);
+        }
+    }
+    
+    /**
+     * Get resource of open output stream. May be STDOUT or a file pointer
+     * to the file specified by an option with 'STDOUT'. The file will be
+     * truncated to 0 bytes on opening.
+     *
+     * @return resource
+     */
+    public function openOutput()
+    {
+        if (null === $this->_stdout) {
+            return STDOUT;
+        } else {
+            $this->_stdout = fopen($this->_stdout, 'wb');
+            return $this->_stdout;
+        }
+    }
+    
+    public function closeOutput()
+    {
+        if (null !== $this->_stdout) {
+            fclose($this->_stdout);
+        }
+    }
+
+    /**
+     * @param string $letter
+     * @param string $msg
+     * @param string $value
+     */
+    protected function addError($letter, $msg, $value = null)
+    {
+        if ($value !== null) {
+            $value = var_export($value, 1);
+        }
+        $this->errors[$letter][] = sprintf($msg, $value);
+    }
+}
+
diff --git a/inc/lib/minify/MrClay/Cli/Arg.php b/inc/lib/minify/MrClay/Cli/Arg.php
new file mode 100755
index 00000000..81146a7f
--- /dev/null
+++ b/inc/lib/minify/MrClay/Cli/Arg.php
@@ -0,0 +1,181 @@
+<?php
+
+namespace MrClay\Cli;
+
+/**
+ * An argument for a CLI app. This specifies the argument, what values it expects and
+ * how it's treated during validation.
+ *
+ * By default, the argument will be assumed to be an optional letter flag with no value following.
+ *
+ * If the argument may receive a value, call mayHaveValue(). If there's whitespace after the
+ * flag, the value will be returned as true instead of the string.
+ *
+ * If the argument MUST be accompanied by a value, call mustHaveValue(). In this case, whitespace
+ * is permitted between the flag and its value.
+ *
+ * Use assertFile() or assertDir() to indicate that the argument must return a string value
+ * specifying a file or directory. During validation, the value will be resolved to a
+ * full file/dir path (not necessarily existing!) and the original value will be accessible
+ * via a "*.raw" key. E.g. $cli->values['f.raw']
+ *
+ * Use assertReadable()/assertWritable() to cause the validator to test the file/dir for
+ * read/write permissions respectively.
+ *
+ * @method \MrClay\Cli\Arg mayHaveValue() Assert that the argument, if present, may receive a string value
+ * @method \MrClay\Cli\Arg mustHaveValue() Assert that the argument, if present, must receive a string value
+ * @method \MrClay\Cli\Arg assertFile() Assert that the argument's value must specify a file
+ * @method \MrClay\Cli\Arg assertDir() Assert that the argument's value must specify a directory
+ * @method \MrClay\Cli\Arg assertReadable() Assert that the specified file/dir must be readable
+ * @method \MrClay\Cli\Arg assertWritable() Assert that the specified file/dir must be writable
+ *
+ * @property-read bool mayHaveValue
+ * @property-read bool mustHaveValue
+ * @property-read bool assertFile
+ * @property-read bool assertDir
+ * @property-read bool assertReadable
+ * @property-read bool assertWritable
+ * @property-read bool useAsInfile
+ * @property-read bool useAsOutfile
+ *
+ * @author Steve Clay <steve@mrclay.org>
+ * @license http://www.opensource.org/licenses/mit-license.php  MIT License
+ */
+class Arg {
+    /**
+     * @return array
+     */
+    public function getDefaultSpec()
+    {
+        return array(
+            'mayHaveValue' => false,
+            'mustHaveValue' => false,
+            'assertFile' => false,
+            'assertDir' => false,
+            'assertReadable' => false,
+            'assertWritable' => false,
+            'useAsInfile' => false,
+            'useAsOutfile' => false,
+        );
+    }
+
+    /**
+     * @var array
+     */
+    protected $spec = array();
+
+    /**
+     * @var bool
+     */
+    protected $required = false;
+
+    /**
+     * @var string
+     */
+    protected $description = '';
+
+    /**
+     * @param bool $isRequired
+     */
+    public function __construct($isRequired = false)
+    {
+        $this->spec = $this->getDefaultSpec();
+        $this->required = (bool) $isRequired;
+        if ($isRequired) {
+            $this->spec['mustHaveValue'] = true;
+        }
+    }
+
+    /**
+     * Assert that the argument's value points to a writable file. When
+     * Cli::openOutput() is called, a write pointer to this file will
+     * be provided.
+     * @return Arg
+     */
+    public function useAsOutfile()
+    {
+        $this->spec['useAsOutfile'] = true;
+        return $this->assertFile()->assertWritable();
+    }
+
+    /**
+     * Assert that the argument's value points to a readable file. When
+     * Cli::openInput() is called, a read pointer to this file will
+     * be provided.
+     * @return Arg
+     */
+    public function useAsInfile()
+    {
+        $this->spec['useAsInfile'] = true;
+        return $this->assertFile()->assertReadable();
+    }
+
+    /**
+     * @return array
+     */
+    public function getSpec()
+    {
+        return $this->spec;
+    }
+
+    /**
+     * @param string $desc
+     * @return Arg
+     */
+    public function setDescription($desc)
+    {
+        $this->description = $desc;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getDescription()
+    {
+        return $this->description;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isRequired()
+    {
+        return $this->required;
+    }
+
+    /**
+     * Note: magic methods declared in class PHPDOC
+     *
+     * @param string $name
+     * @param array $args
+     * @return Arg
+     * @throws \BadMethodCallException
+     */
+    public function __call($name, array $args = array())
+    {
+        if (array_key_exists($name, $this->spec)) {
+            $this->spec[$name] = true;
+            if ($name === 'assertFile' || $name === 'assertDir') {
+                $this->spec['mustHaveValue'] = true;
+            }
+        } else {
+            throw new \BadMethodCallException('Method does not exist');
+        }
+        return $this;
+    }
+
+    /**
+     * Note: magic properties declared in class PHPDOC
+     *
+     * @param string $name
+     * @return bool|null
+     */
+    public function __get($name)
+    {
+        if (array_key_exists($name, $this->spec)) {
+            return $this->spec[$name];
+        }
+        return null;
+    }
+}
diff --git a/inc/lib/recaptcha/LICENSE b/inc/lib/recaptcha/LICENSE
new file mode 100644
index 00000000..b612f71f
--- /dev/null
+++ b/inc/lib/recaptcha/LICENSE
@@ -0,0 +1,22 @@
+Copyright (c) 2007 reCAPTCHA -- http://recaptcha.net
+AUTHORS:
+  Mike Crawford
+  Ben Maurer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/inc/lib/recaptcha/recaptchalib.php b/inc/lib/recaptcha/recaptchalib.php
new file mode 100644
index 00000000..32c4f4d7
--- /dev/null
+++ b/inc/lib/recaptcha/recaptchalib.php
@@ -0,0 +1,277 @@
+<?php
+/*
+ * This is a PHP library that handles calling reCAPTCHA.
+ *    - Documentation and latest version
+ *          http://recaptcha.net/plugins/php/
+ *    - Get a reCAPTCHA API Key
+ *          https://www.google.com/recaptcha/admin/create
+ *    - Discussion group
+ *          http://groups.google.com/group/recaptcha
+ *
+ * Copyright (c) 2007 reCAPTCHA -- http://recaptcha.net
+ * AUTHORS:
+ *   Mike Crawford
+ *   Ben Maurer
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * The reCAPTCHA server URL's
+ */
+define("RECAPTCHA_API_SERVER", "http://www.google.com/recaptcha/api");
+define("RECAPTCHA_API_SECURE_SERVER", "https://www.google.com/recaptcha/api");
+define("RECAPTCHA_VERIFY_SERVER", "www.google.com");
+
+/**
+ * Encodes the given data into a query string format
+ * @param $data - array of string elements to be encoded
+ * @return string - encoded request
+ */
+function _recaptcha_qsencode ($data) {
+        $req = "";
+        foreach ( $data as $key => $value )
+                $req .= $key . '=' . urlencode( stripslashes($value) ) . '&';
+
+        // Cut the last '&'
+        $req=substr($req,0,strlen($req)-1);
+        return $req;
+}
+
+
+
+/**
+ * Submits an HTTP POST to a reCAPTCHA server
+ * @param string $host
+ * @param string $path
+ * @param array $data
+ * @param int port
+ * @return array response
+ */
+function _recaptcha_http_post($host, $path, $data, $port = 80) {
+
+        $req = _recaptcha_qsencode ($data);
+
+        $http_request  = "POST $path HTTP/1.0\r\n";
+        $http_request .= "Host: $host\r\n";
+        $http_request .= "Content-Type: application/x-www-form-urlencoded;\r\n";
+        $http_request .= "Content-Length: " . strlen($req) . "\r\n";
+        $http_request .= "User-Agent: reCAPTCHA/PHP\r\n";
+        $http_request .= "\r\n";
+        $http_request .= $req;
+
+        $response = '';
+        if( false == ( $fs = @fsockopen($host, $port, $errno, $errstr, 10) ) ) {
+                die ('Could not open socket');
+        }
+
+        fwrite($fs, $http_request);
+
+        while ( !feof($fs) )
+                $response .= fgets($fs, 1160); // One TCP-IP packet
+        fclose($fs);
+        $response = explode("\r\n\r\n", $response, 2);
+
+        return $response;
+}
+
+
+
+/**
+ * Gets the challenge HTML (javascript and non-javascript version).
+ * This is called from the browser, and the resulting reCAPTCHA HTML widget
+ * is embedded within the HTML form it was called from.
+ * @param string $pubkey A public key for reCAPTCHA
+ * @param string $error The error given by reCAPTCHA (optional, default is null)
+ * @param boolean $use_ssl Should the request be made over ssl? (optional, default is false)
+
+ * @return string - The HTML to be embedded in the user's form.
+ */
+function recaptcha_get_html ($pubkey, $error = null, $use_ssl = false)
+{
+	if ($pubkey == null || $pubkey == '') {
+		die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
+	}
+	
+	if ($use_ssl) {
+                $server = RECAPTCHA_API_SECURE_SERVER;
+        } else {
+                $server = RECAPTCHA_API_SERVER;
+        }
+
+        $errorpart = "";
+        if ($error) {
+           $errorpart = "&amp;error=" . $error;
+        }
+        return '<script type="text/javascript" src="'. $server . '/challenge?k=' . $pubkey . $errorpart . '"></script>
+
+	<noscript>
+  		<iframe src="'. $server . '/noscript?k=' . $pubkey . $errorpart . '" height="300" width="500" frameborder="0"></iframe><br/>
+  		<textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea>
+  		<input type="hidden" name="recaptcha_response_field" value="manual_challenge"/>
+	</noscript>';
+}
+
+
+
+
+/**
+ * A ReCaptchaResponse is returned from recaptcha_check_answer()
+ */
+class ReCaptchaResponse {
+        var $is_valid;
+        var $error;
+}
+
+
+/**
+  * Calls an HTTP POST function to verify if the user's guess was correct
+  * @param string $privkey
+  * @param string $remoteip
+  * @param string $challenge
+  * @param string $response
+  * @param array $extra_params an array of extra variables to post to the server
+  * @return ReCaptchaResponse
+  */
+function recaptcha_check_answer ($privkey, $remoteip, $challenge, $response, $extra_params = array())
+{
+	if ($privkey == null || $privkey == '') {
+		die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
+	}
+
+	if ($remoteip == null || $remoteip == '') {
+		die ("For security reasons, you must pass the remote ip to reCAPTCHA");
+	}
+
+	
+	
+        //discard spam submissions
+        if ($challenge == null || strlen($challenge) == 0 || $response == null || strlen($response) == 0) {
+                $recaptcha_response = new ReCaptchaResponse();
+                $recaptcha_response->is_valid = false;
+                $recaptcha_response->error = 'incorrect-captcha-sol';
+                return $recaptcha_response;
+        }
+
+        $response = _recaptcha_http_post (RECAPTCHA_VERIFY_SERVER, "/recaptcha/api/verify",
+                                          array (
+                                                 'privatekey' => $privkey,
+                                                 'remoteip' => $remoteip,
+                                                 'challenge' => $challenge,
+                                                 'response' => $response
+                                                 ) + $extra_params
+                                          );
+
+        $answers = explode ("\n", $response [1]);
+        $recaptcha_response = new ReCaptchaResponse();
+
+        if (trim ($answers [0]) == 'true') {
+                $recaptcha_response->is_valid = true;
+        }
+        else {
+                $recaptcha_response->is_valid = false;
+                $recaptcha_response->error = $answers [1];
+        }
+        return $recaptcha_response;
+
+}
+
+/**
+ * gets a URL where the user can sign up for reCAPTCHA. If your application
+ * has a configuration page where you enter a key, you should provide a link
+ * using this function.
+ * @param string $domain The domain where the page is hosted
+ * @param string $appname The name of your application
+ */
+function recaptcha_get_signup_url ($domain = null, $appname = null) {
+	return "https://www.google.com/recaptcha/admin/create?" .  _recaptcha_qsencode (array ('domains' => $domain, 'app' => $appname));
+}
+
+function _recaptcha_aes_pad($val) {
+	$block_size = 16;
+	$numpad = $block_size - (strlen ($val) % $block_size);
+	return str_pad($val, strlen ($val) + $numpad, chr($numpad));
+}
+
+/* Mailhide related code */
+
+function _recaptcha_aes_encrypt($val,$ky) {
+	if (! function_exists ("mcrypt_encrypt")) {
+		die ("To use reCAPTCHA Mailhide, you need to have the mcrypt php module installed.");
+	}
+	$mode=MCRYPT_MODE_CBC;   
+	$enc=MCRYPT_RIJNDAEL_128;
+	$val=_recaptcha_aes_pad($val);
+	return mcrypt_encrypt($enc, $ky, $val, $mode, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0");
+}
+
+
+function _recaptcha_mailhide_urlbase64 ($x) {
+	return strtr(base64_encode ($x), '+/', '-_');
+}
+
+/* gets the reCAPTCHA Mailhide url for a given email, public key and private key */
+function recaptcha_mailhide_url($pubkey, $privkey, $email) {
+	if ($pubkey == '' || $pubkey == null || $privkey == "" || $privkey == null) {
+		die ("To use reCAPTCHA Mailhide, you have to sign up for a public and private key, " .
+		     "you can do so at <a href='http://www.google.com/recaptcha/mailhide/apikey'>http://www.google.com/recaptcha/mailhide/apikey</a>");
+	}
+	
+
+	$ky = pack('H*', $privkey);
+	$cryptmail = _recaptcha_aes_encrypt ($email, $ky);
+	
+	return "http://www.google.com/recaptcha/mailhide/d?k=" . $pubkey . "&c=" . _recaptcha_mailhide_urlbase64 ($cryptmail);
+}
+
+/**
+ * gets the parts of the email to expose to the user.
+ * eg, given johndoe@example,com return ["john", "example.com"].
+ * the email is then displayed as john...@example.com
+ */
+function _recaptcha_mailhide_email_parts ($email) {
+	$arr = preg_split("/@/", $email );
+
+	if (strlen ($arr[0]) <= 4) {
+		$arr[0] = substr ($arr[0], 0, 1);
+	} else if (strlen ($arr[0]) <= 6) {
+		$arr[0] = substr ($arr[0], 0, 3);
+	} else {
+		$arr[0] = substr ($arr[0], 0, 4);
+	}
+	return $arr;
+}
+
+/**
+ * Gets html to display an email address given a public an private key.
+ * to get a key, go to:
+ *
+ * http://www.google.com/recaptcha/mailhide/apikey
+ */
+function recaptcha_mailhide_html($pubkey, $privkey, $email) {
+	$emailparts = _recaptcha_mailhide_email_parts ($email);
+	$url = recaptcha_mailhide_url ($pubkey, $privkey, $email);
+	
+	return htmlentities($emailparts[0]) . "<a href='" . htmlentities ($url) .
+		"' onclick=\"window.open('" . htmlentities ($url) . "', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;\" title=\"Reveal this e-mail address\">...</a>@" . htmlentities ($emailparts [1]);
+
+}
+
+
+?>