diff options
Diffstat (limited to 'inc/lib/minify/Minify/HTML/Helper.php')
| -rwxr-xr-x | inc/lib/minify/Minify/HTML/Helper.php | 193 |
1 files changed, 193 insertions, 0 deletions
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; + } +} |