1 files changed, 94 insertions, 0 deletions
diff --git a/tools/inc/lib/jsgettext/JSParser.php b/tools/inc/lib/jsgettext/JSParser.php
new file mode 100644
index 00000000..adba59bc
--- /dev/null
+++ b/tools/inc/lib/jsgettext/JSParser.php
@@ -0,0 +1,94 @@
+<?php
+
+class JSParser {
+
+	protected $content;
+	protected $keywords;
+	protected $regs = array();
+	protected $regsCounter = 0;
+	protected $strings = array();
+	protected $stringsCounter = 0;
+
+	protected function _extractRegs($match) {
+		$this->regs[$this->regsCounter] = $match[1];
+		$id = "<<reg{$this->regsCounter}>>";
+		$this->regsCounter++;
+		return $id;
+	}
+	protected function _extractStrings($match) {
+		$this->strings[$this->stringsCounter] = $this->importRegExps($match[0]);
+		$id = "<<s{$this->stringsCounter}>>";
+		$this->stringsCounter++;
+		return $id;
+	}
+	protected function importRegExps($input) {
+		$regs = $this->regs;
+		return preg_replace_callback("#<<reg(\d+)>>#", function ($match) use($regs) {
+			return $regs[$match[1]];
+		}, $input);
+	}
+
+	protected function importStrings($input) {
+		$strings = $this->strings;
+		return preg_replace_callback("#<<s(\d+)>>#", function ($match) use($strings) {
+			return $strings[$match[1]];
+		}, $input);
+	}
+
+	public function __construct($file, $keywords = '_') {
+		$this->content = file_get_contents($file);
+		$this->keywords = (array)$keywords;
+	}
+	
+	public function parse() {
+		$output = $this->content; //htmlspecialchars($this->content, ENT_NOQUOTES);
+
+		// extract reg exps
+		$output = preg_replace_callback(
+			'# ( / (?: (?>[^/\\\\]++) | \\\\\\\\ | (?<!\\\\)\\\\(?!\\\\) | \\\\/ )+ (?<!\\\\)/ ) [a-z]* \b #ix',
+			array($this, '_extractRegs'), $output
+		);
+
+		// extract strings
+		$output = preg_replace_callback(
+			array(
+				'# " ( (?: (?>[^"\\\\]++) | \\\\\\\\ | (?<!\\\\)\\\\(?!\\\\) | \\\\" )* ) (?<!\\\\)" #ix',
+				"# ' ( (?: (?>[^'\\\\]++) | \\\\\\\\ | (?<!\\\\)\\\\(?!\\\\) | \\\\' )* ) (?<!\\\\)' #ix"
+			), array($this, '_extractStrings'), $output
+		);
+
+		// delete line comments
+		$output = preg_replace("#(//.*?)$#m", '', $output);
+
+		// delete multiline comments
+		$output = preg_replace('#/\*(.*?)\*/#is', '', $output);
+
+		$strings = $this->strings;
+		$output = preg_replace_callback("#<<s(\d+)>>#", function($match) use($strings) {
+			return $strings[$match[1]];
+		}, $output);
+
+		$keywords = implode('|', $this->keywords);
+
+		$strings = array();
+
+		// extract func calls
+		preg_match_all(
+			'# (?:'.$keywords.') \(\\ *" ( (?: (?>[^"\\\\]++) | \\\\\\\\ | (?<!\\\\)\\\\(?!\\\\) | \\\\" )* ) (?<!\\\\)"\\ *\) #ix',
+			$output, $matches, PREG_SET_ORDER
+		);
+
+		foreach ($matches as $m) $strings[] = stripslashes($m[1]);
+
+		$matches = array();
+		preg_match_all(
+			"# (?:$keywords) \(\\ *' ( (?: (?>[^'\\\\]++) | \\\\\\\\ | (?<!\\\\)\\\\(?!\\\\) | \\\\' )* ) (?<!\\\\)'\\ *\) #ix",
+			$output, $matches, PREG_SET_ORDER
+		);
+
+		foreach ($matches as $m) $strings[] = stripslashes($m[1]);
+
+		return $strings;
+	}
+}
+?>