includes/js-compressor.php
author Dan
Sat, 15 Nov 2008 18:21:16 -0500
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<?php
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/*
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 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
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17ebe24cdf85 Rebranded as 1.1.5 (Caoineag alpha 5) and fixed a couple bugs related to CDN support in template_nodb and installerUI. Updated readme.
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 * Version 1.1.5 (Caoineag alpha 5)
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 * Copyright (C) 2006-2008 Dan Fuhry
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 * Javascript compression library - used to compact the client-side Javascript code (all 72KB of it!) to save some bandwidth
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 *
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 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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 *
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 * This class was written by Andrea Giammarchi and was downloaded from PHPClasses.org. The information page stated that
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 * this class is licensed under the GNU General Public License, the terms of which can be found by reading the file
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 * "GPL" included with the Enano package.
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 */
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/**
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 * JavaScriptCompressor class,
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 *	removes comments or pack JavaScript source[s] code.
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 * ______________________________________________________________
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 * JavaScriptCompressor (just 2 public methods)
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 *    |
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 *    |________ getClean(jsSource:mixed):string
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 *    |         	returns one or more JavaScript code without comments,
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 *    |         	by default removes some spaces too
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 *    |
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 *    |________ getPacked(jsSource:mixed):string
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 *              	returns one or more JavaScript code packed,
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 *	        	using getClean and obfuscating output
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 * --------------------------------------------------------------
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 * Note about $jsSource input varible:
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 * 	this var should be a string (i.e. $jsSource = file_get_contents("myFile.js");)
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 *      should be an array of strings (i.e. array(file_get_contents("1.js"), file_get_contents("2.js"), ... ))
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 *      should be an array with 1 or 2 keys:
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 *      	(i.e. array('code'=>file_get_contents("mySource.js")))
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 *              (i.e. array('code'=>file_get_contents("mySource.js"), 'name'=>'mySource'))
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 *      ... and should be an array of arrays created with theese rules
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 *      array(
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 *		file_get_contents("secret.js"),
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 *              array('code'=>$anotherJS),
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 *              array('code'=>$myJSapplication, 'name'=>'JSApplication V 1.0')
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 *      )
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 *
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 *      The name used on dedicated key, will be write on parsed source header
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 * --------------------------------------------------------------
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 * Note about returned strings:
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 * 	Your browser should wrap very long strings, then don't use
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 *      cut and paste from your browser, save output into your database or directly
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 *      in a file or print them only inside <script> and </script> tags
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 * --------------------------------------------------------------
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 * Note about parser performance:
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 * 	With pure PHP embed code this class should be slow and not really safe
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 *      for your server performance then don't parse JavaScript runtime for each
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 *      file you need and create some "parsed" caching system
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 *      (at least while i've not created a compiled version of theese class functions).
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 *      Here there's a caching system example: http://www.phpclasses.org/browse/package/3158.html
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 * --------------------------------------------------------------
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 * Note about JavaScript packed compatibility:
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 * 	To be sure about compatibility include before every script JSL Library:
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 *      http://www.devpro.it/JSL/
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 * JSL library add some features for old or buggy browsers, one of
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 * those functions is String.replace with function as second argument,
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 * used by JavaScript generated packed code to rebuild original code.
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 *
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 * Remember that KDE 3.5, Safari and IE5 will not work correctly with packed version
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 * if you'll not include JSL.
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 * --------------------------------------------------------------
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 * @Compatibility	>= PHP 4
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 * @Author		Andrea Giammarchi
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 * @see       http://www.devpro.it/
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 * @since	    2006/05/31
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 * @since		  2006/08/01 [requires SourceMap.class.php to parse source faster and better (dojo.js.uncompressed.js file (211Kb) successfull cleaned or packed)]
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 * @version		0.8
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 * Dependencies:
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 *      Server: BaseConvert.class.php
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 *			Server: SourceMap.class.php
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 *			Client: JSL.js (http://www.devpro.it/JSL/)
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 * Convertion is supported by every browser with JSL Library (FF 1+ Opera 8+ and IE5.5+ are supported without JSL too)
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 * @copyright Dean Edwards for his originally idea [dean.edwards.name] and his JavaScript packer
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 */
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class JavaScriptCompressor {
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	/**
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	 * public variables
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         * 	stats:string		after every compression has some informations
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         *      version:string		version of this class
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	 */
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	var	$stats = '',
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		$version = '0.8';
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	/** 'private' variables, any comment sorry */
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	var	$__startTime = 0,
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		$__sourceLength = 0,
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		$__sourceNewLength = 0,
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		$__totalSources = 0,
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		$__sources = array(),
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		$__delimeter = array(),
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		$__cleanFinder = array("/(\n|\r)+/", "/( |\t)+/", "/(\n )|( \n)|( \n )/", "/[[:space:]]+(\)|})/", "/(\(|{)[[:space:]]+/", "/[[:space:]]*(;|,|:|<|>|\&|\||\=|\?|\+|\-|\%)[[:space:]]*/", "/\)[[:space:]]+{/", "/}[[:space:]]+\(/"),
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		$__cleanReplacer = array("\n", " ", "\n", "\\1", "\\1", "\\1", "){", "}("),
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		$__BC = null,
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		$__SourceMap = null;
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	/**
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	 * public constructor
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         * 	creates a new BaseConvert class variable (base 36)
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	 */
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	function __construct() {
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		$this->__SourceMap = new SourceMap();
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		$this->__BC = new BaseConvert('0123456789abcdefghijklmnopqrstuvwxyz');
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		$this->__delimeter = array(
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			array('name'=>'doublequote', 'start'=>'"', 'end'=>'"', 'noslash'=>true),
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			array('name'=>'singlequote', 'start'=>"'", 'end'=>"'", 'noslash'=>true),
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			array('name'=>'singlelinecomment', 'start'=>'//', 'end'=>array("\n", "\r")),
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			array('name'=>'multilinecomment', 'start'=>'/*', 'end'=>'*/'),
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			array('name'=>'regexp', 'start'=>'/', 'end'=>'/', 'match'=>"/^\/[^\n\r]+\/$/", 'noslash'=>true)
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		);
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	}
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	/**
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	 * public method
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         * 	getClean(mixed [, bool]):string
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         *      compress JavaScript removing comments and somespaces (on by default)
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         * @param	mixed		view example and notes on class comments
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	 */
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	function getClean($jsSource) {
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		return $this->__commonInitMethods($jsSource, false);
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	}
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	/**
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	 * public method
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         * 	getPacked(mixed):string
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         *      compress JavaScript replaceing words and removing comments and some spaces
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         * @param	mixed		view example and notes on class comments
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	 */
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	function getPacked($jsSource) {
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		return $this->__commonInitMethods($jsSource, true);
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	}
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	/** 'private' methods, any comment sorry */
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	function __addCleanCode($str) {
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		return preg_replace($this->__cleanFinder, $this->__cleanReplacer, trim($str));
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	}
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	function __addClean(&$arr, &$str, &$start, &$end, $clean) {
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		if($clean)
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			array_push($arr, $this->__addCleanCode(substr($str, $start, $end - $start)));
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		else
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			array_push($arr, substr($str, $start, $end - $start));
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	}
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	function __clean(&$str) {
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		$len = strlen($str);
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		$type = '';
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		$clean = array();
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		$map = $this->__SourceMap->getMap($str, $this->__delimeter);
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		for($a = 0, $b = 0, $c = count($map); $a < $c; $a++) {
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			$type = &$map[$a]['name'];
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			switch($type) {
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				case 'code':
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				case 'regexp':
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				case 'doublequote':
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				case 'singlequote':
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					$this->__addClean($clean, $str, $map[$a]['start'], $map[$a]['end'], ($type === 'code'));
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					if($type !== 'regexp')
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						array_push($clean, "\n");	
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					break;
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			}
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 		}
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		return preg_replace("/(\n)+/", "\n", trim(implode('', $clean)));
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	}
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	function __commonInitMethods(&$jsSource, $packed) { 
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		$header = '';
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		$this->__startTime = $this->__getTime();
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		$this->__sourceLength = 0;
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		$this->__sourceManager($jsSource);
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		for($a = 0, $b = $this->__totalSources; $a < $b; $a++)
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			$this->__sources[$a]['code'] = $this->__clean($this->__sources[$a]['code']);
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		$header = $this->__getHeader();
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		for($a = 0, $b = $this->__totalSources; $a < $b; $a++)
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			$this->__sources[$a] = &$this->__sources[$a]['code'];
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		$this->__sources = implode(';', $this->__sources);
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		if($packed)
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			$this->__sources = $this->__pack($this->__sources);
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		$this->__sourceNewLength = strlen($this->__sources);
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		$this->__setStats();
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		return $header.$this->__sources;
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	}
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	function __getHeader() {
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		return implode('', array(
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			'/* ',$this->__getScriptNames(),'JavaScriptCompressor ',$this->version,' [www.devpro.it], ',
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			'thanks to Dean Edwards for idea [dean.edwards.name]',
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			" */\r\n"		
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		));
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	}
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	function __getScriptNames() {
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		$a = 0;
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		$result = array();
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		for($b = $this->__totalSources; $a < $b; $a++) {
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			if($this->__sources[$a]['name'] !== '')
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				array_push($result, $this->__sources[$a]['name']);
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		}
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		$a = count($result);
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		if($a-- > 0)
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			$result[$a] .= ' with ';
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		return $a < 0 ? '' : implode(', ', $result);
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	}
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	function __getSize($size, $dec = 2) {
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		$toEval = '';
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		$type = array('bytes', 'Kb', 'Mb', 'Gb');
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		$nsize = $size;
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		$times = 0;
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		while($nsize > 1024) {
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			$nsize = $nsize / 1024;
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			$toEval .= '/1024';
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			$times++;
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		}
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		if($times === 0)
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			$fSize = $size.' '.$type[$times];
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		else {
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			eval('$size=($size'.$toEval.');');
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			$fSize =  number_format($size, $dec, '.', '').' '.$type[$times];
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		}
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		return $fSize;
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	}
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	function __getTime($startTime = null) {
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		list($usec, $sec) = explode(' ', microtime());
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		$newtime = (float)$usec + (float)$sec;
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		if($startTime !== null)
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			$newtime = number_format(($newtime - $startTime), 3);
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		return $newtime;
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	}
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	function __pack(&$str) {
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		$container = array();
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		$str = preg_replace("/(\w+)/e", '$this->__BC->toBase($this->__wordsParser("\\1",$container));', $this->__clean($str));
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		$str = str_replace("\n", '\n', addslashes($str));
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		return 'eval(function(A,G){return A.replace(/(\\w+)/g,function(a,b){return G[parseInt(b,36)]})}("'.$str.'","'.implode(',', $container).'".split(",")));';
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	}
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	function __setStats() {
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		$this->stats = implode(' ', array(
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			$this->__getSize($this->__sourceLength),
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			'to',
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			$this->__getSize($this->__sourceNewLength),
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			'in',
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			$this->__getTime($this->__startTime),
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			'seconds'
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		));
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	}
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	function __sourceManager(&$jsSource) {
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		$b = count($jsSource);
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		$this->__sources = array();
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		if(is_string($jsSource))
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			$this->__sourcePusher($jsSource, '');
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		elseif(is_array($jsSource) && $b > 0) {
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			if(isset($jsSource['code']))
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				$this->__sourcePusher($jsSource['code'], (isset($jsSource['name']) ? $jsSource['name'] : ''));
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			else {
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				for($a = 0; $a < $b; $a++) {
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					if(is_array($jsSource[$a]) && isset($jsSource[$a]['code'], $jsSource[$a]['name']))
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						$this->__sourcePusher($jsSource[$a]['code'], trim($jsSource[$a]['name']));
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					elseif(is_string($jsSource[$a]))
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						$this->__sourcePusher($jsSource[$a], '');
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				}
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			}
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		}
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		$this->__totalSources = count($this->__sources);
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	}
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	function __sourcePusher(&$code, $name) {
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		$this->__sourceLength += strlen($code);
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		array_push($this->__sources, array('code'=>$code, 'name'=>$name));
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	}
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	function __wordsParser($str, &$d) {
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		if(is_null($key = array_shift($key = array_keys($d,$str))))
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			$key = array_push($d, $str) - 1;
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		return $key;
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	}
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}
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/**
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 * BaseConvert class,
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 *	converts an unsigned base 10 integer to a different base and vice versa.
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 * ______________________________________________________________
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 * BaseConvert
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 *    |
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 *    |________ constructor(newBase:string)
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 *    |         	uses newBase string var for convertion
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 *    |                 [i.e. "0123456789abcdef" for an hex convertion]
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 *    |
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 *    |________ toBase(unsignedInteger:uint):string
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 *    |         	return base value of input
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 *    |
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 *    |________ fromBase(baseString:string):uint
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 *              	return base 10 integer value of base input
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 * --------------------------------------------------------------
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 * REMEMBER: PHP < 6 doesn't work correctly with integer greater than 2147483647 (2^31 - 1)
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 * --------------------------------------------------------------
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 * @Compatibility	>= PHP 4
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 * @Author		Andrea Giammarchi
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 * @Site		http://www.devpro.it/
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 * @Date		2006/06/05
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 * @Version		1.0
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 */
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class BaseConvert {
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	var	$base, $baseLength;
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	function BaseConvert($base) {
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		$this->base = &$base;
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		$this->baseLength = strlen($base);
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	}
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	function toBase($num) {
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		$module = 0; $result = '';
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		while($num) {
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			$result = $this->base{($module = $num % $this->baseLength)}.$result;
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			$num = (int)(($num - $module) / $this->baseLength);
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		}
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		return $result !== '' ? $result : $this->base{0};
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	}
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	function fromBase($str) {
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		$pos = 0; $len = strlen($str) - 1; $result = 0;
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		while($pos < $len)
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			$result += pow($this->baseLength, ($len - $pos)) * strpos($this->base, $str{($pos++)});
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		return $len >= 0 ? $result + strpos($this->base, $str{($pos)}) : null;
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	}
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}
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/**
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* SourceMap class,
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*    reads a generic language source code and returns its map.
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* ______________________________________________________________
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* The SourceMap goals is to create a map of a generic script/program language.
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* The getMap method returns an array/list of arrays/dictionary/objects
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* of source map using delimeters variable to map correctly:
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*  - multi line comments
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*  - single line comments
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*  - double quoted strings
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*  - single quoted strings
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*  - pure code
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*  - everything else (for example regexp [/re/] with javascript), just adding a correct delimeter
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* --------------------------------------------------------------
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* What about the delimeter
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*     It's an array/list of arrays/dictionary/obects with some properties to find what you're looking for.
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*
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* parameters are:
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*  - name, the name of the delimeter (i.e. "doublequote")
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*  - start, one or mode chars to find as start delimeter (i.e. " for double quoted string)
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*  - end, one or mode chars to find as end delimeter (i.e. " for double quoted string) [end should be an array/list too]
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*
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* optional parameters are:
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*  - noslash, if true find the end of the delimeter only if last char is not slashed (i.e. "string\"test" find " after test)
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*  - match, if choosed language has regexp, verify if string from start to end matches used regexp (i.e. /^\/[^\n\r]+\/$/ for JavaScript regexp)
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*
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* If end parameter is an array, match and noslash are not supported (i.e. ["\n", "\r"] for end delimeter of a single line comment)
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* --------------------------------------------------------------
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* What about SourceMap usage
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*     It should be a good solution to create sintax highlighter, parser,
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*     verifier or some other source code parsing procedure
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* --------------------------------------------------------------
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* What about SourceMap performance script/languages
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*     I've created different version of this class to test each script/program language performance too.
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* Python with or without Psyco is actually the faster parser.
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* However with this PHP version this class has mapped "dojo.js.uncompressed.js" file (about 211Kb) in less than 0.5 second.
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* Test has been done with embed class and PHP as module, any accelerator was used for this PHP test.
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* --------------------------------------------------------------
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* @Compatibility    >= PHP 4
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* @Author        Andrea Giammarchi
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* @Site        http://www.devpro.it/
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* @Date        2006/08/01
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* @LastMOd        2006/08/01
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* @Version        0.1
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* @Application        Last version of JavaScriptCompressor class use this one to map source code.
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*/
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class SourceMap {
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    /**
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     * public method
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         *     getMap(&$source:string, &$delimeters:array):array
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     * Maps the source code using $delimeters rules and returns map as an array
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         * NOTE: read comments to know more about map and delimeter
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         *
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         * @param    string        generic source code
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         * @param    array        array with nested array with code rules
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     */
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    function getMap(&$source, &$delimeters) {
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        # "unsigned" integer variables
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        $sourcePosition = 0;
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        $delimetersPosition = 0;
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        $findLength = 0;
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        $len = 0;
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        $tempIndex = 0;
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        $sourceLength = strlen($source);
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        $delimetersLength = count($delimeters);
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        # integer variables
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        $tempPosition = -1;
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        $endPosition = -1;
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        # array variables
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        $map = array();
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        $tempMap = array();
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        $tempDelimeter = array();
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   406
        
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        while($sourcePosition < $sourceLength) {
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   408
            $endPosition = -1;
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   409
            for($delimetersPosition = 0; $delimetersPosition < $delimetersLength; $delimetersPosition++) {
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                $tempPosition = strpos($source, $delimeters[$delimetersPosition]['start'], $sourcePosition);
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                if($tempPosition !== false && ($tempPosition < $endPosition || $endPosition === -1)) {
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                    $endPosition = $tempPosition;
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                    $tempIndex = $delimetersPosition;
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   414
                }
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            }
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            if($endPosition !== -1) {
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                $sourcePosition = $endPosition;
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                $tempDelimeter = &$delimeters[$tempIndex];
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                $findLength = strlen($tempDelimeter['start']);
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                if(is_array($tempDelimeter['end'])) {
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                    $delimetersPosition = 0;
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                    $endPosition = -1;
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   423
                    for($len = count($tempDelimeter['end']); $delimetersPosition < $len; $delimetersPosition++) {
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                        $tempPosition = strpos($source, $tempDelimeter['end'][$delimetersPosition], $sourcePosition + $findLength);
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                        if($tempPosition !== false && ($tempPosition < $endPosition || $endPosition === -1)) {
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                            $endPosition = $tempPosition;
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                            $tempIndex = $delimetersPosition;
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                        }    
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                    }
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                    if($endPosition !== -1)
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dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   431
                        $endPosition = $endPosition + strlen($tempDelimeter['end'][$tempIndex]);
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   432
                    else
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   433
                        $endPosition = $sourceLength;
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   434
                    array_push($map, array('name'=>$tempDelimeter['name'], 'start'=>$sourcePosition, 'end'=>$endPosition));
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   435
                    $sourcePosition = $endPosition - 1;
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   436
                }
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   437
                elseif(isset($tempDelimeter['match'])) {
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   438
                    $tempPosition = strpos($source, $tempDelimeter['end'], $sourcePosition + $findLength);
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   439
                    $len = strlen($tempDelimeter['end']);
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   440
                    if($tempPosition !== false && preg_match($tempDelimeter['match'], substr($source, $sourcePosition, $tempPosition - $sourcePosition + $len))) {
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   441
                        $endPosition = isset($tempDelimeter['noslash']) ? $this->__endCharNoSlash($source, $sourcePosition, $tempDelimeter['end'], $sourceLength) : $tempPosition + $len;
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   442
                        array_push($map, array('name'=>$tempDelimeter['name'], 'start'=>$sourcePosition, 'end'=>$endPosition));
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   443
                        $sourcePosition = $endPosition - 1;
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   444
                    }
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   445
                }
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   446
                else {
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   447
                    if(isset($tempDelimeter['noslash']))
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   448
                        $endPosition = $this->__endCharNoSlash($source, $sourcePosition, $tempDelimeter['end'], $sourceLength);
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   449
                    else {
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   450
                        $tempPosition = strpos($source, $tempDelimeter['end'], $sourcePosition + $findLength);
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   451
                        if($tempPosition !== false)
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   452
                            $endPosition = $tempPosition + strlen($tempDelimeter['end']);
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   453
                        else
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   454
                            $endPosition = $sourceLength;
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   455
                    }
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   456
                    array_push($map, array('name'=>$tempDelimeter['name'], 'start'=>$sourcePosition, 'end'=>$endPosition));
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   457
                    $sourcePosition = $endPosition - 1;
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   458
                }
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   459
            }
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   460
            else
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   461
                $sourcePosition = $sourceLength - 1;
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   462
            ++$sourcePosition;
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   463
        }
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   464
        $len = count($map);
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   465
        if($len === 0)
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   466
            array_push($tempMap, array('name'=>'code', 'start'=>0, 'end'=>$sourceLength));
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   467
        else {
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   468
            for($tempIndex = 0; $tempIndex < $len; $tempIndex++) {
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   469
                if($tempIndex === 0 && $map[$tempIndex]['start'] > 0)
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   470
                    array_push($tempMap, array('name'=>'code', 'start'=>0, 'end'=>$map[$tempIndex]['start']));
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   471
                elseif($tempIndex > 0 && $map[$tempIndex]['start'] > $map[$tempIndex-1]['end'])
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   472
                    array_push($tempMap, array('name'=>'code', 'start'=>$map[$tempIndex-1]['end'], 'end'=>$map[$tempIndex]['start']));
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   473
                array_push($tempMap, array('name'=>$map[$tempIndex]['name'], 'start'=>$map[$tempIndex]['start'], 'end'=>$map[$tempIndex]['end']));
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   474
                if($tempIndex + 1 === $len && $map[$tempIndex]['end'] < $sourceLength)
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   475
                    array_push($tempMap, array('name'=>'code', 'start'=>$map[$tempIndex]['end'], 'end'=>$sourceLength));
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   476
            }
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   477
        }
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   478
        return $tempMap;
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   479
    }
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   480
    
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   481
    function __endCharNoSlash(&$source, $position, &$find, &$len) {
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   482
        $temp = strlen($find);
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   483
        do {
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   484
            $position = strpos($source, $find, $position + 1);
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   485
        }while($position !== false && !$this->__charNoSlash($source, $position));
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   486
        if($position === false) $position = $len - $temp;
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   487
        return $position + $temp;
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   488
    }
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   489
    
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   490
    function __charNoSlash(&$source, &$position) {
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   491
        $next = 1; $len = $position - $next;
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   492
        while($len > 0 && $source{$len} === '\\') $len = $position - (++$next);
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   493
        return (($next - 1) % 2 === 0);
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   494
    }
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   495
}
420
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   496
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   497
/**
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   498
 * Wrapper for the JavaScriptCompressor class.
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   499
 * @param string Javascript code to compact. If this doesn't contain any newline characters, will be treated as a filename.
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   500
 * @param bool If true, aggressively compresses the code. Otherwise, just strips comments and some whitespace.
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   501
 * @return string Compressed JS
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   502
 */
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   503
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   504
function perform_js_compress($text_or_file, $aggressive = false)
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   505
{
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   506
  static $compressor = false;
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   507
  
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   508
  if ( !is_object($compressor) )
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   509
    $compressor = new JavaScriptCompressor();
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   510
  
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   511
  if ( strpos($text_or_file, "\n") )
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   512
  {
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   513
    $text =& $text_or_file;
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   514
  }
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   515
  else if ( file_exists($text_or_file) )
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   516
  {
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   517
    $text = file_get_contents($text_or_file);
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   518
  }
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   519
  else
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   520
  {
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   521
    $text =& $text_or_file;
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   522
  }
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   523
  
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   524
  return ( $aggressive ) ? $compressor->getPacked($text) : $compressor->getClean($text);
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   525
}
301f546688d1 Re-enabled, debugged, and optimized Javascript compression code
Dan
parents: 411
diff changeset
   526
1
fe660c52c48f Adding /includes
dan@scribus.fuhry.local.fuhry.local
parents:
diff changeset
   527
?>