429 Zeilen
15 KiB
PHP
429 Zeilen
15 KiB
PHP
<?php
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/******
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*
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* EditArea PHP compressor
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* Developped by Christophe Dolivet
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* Released under LGPL, Apache and BSD licenses
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* v1.1.3 (2007/01/18)
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*
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******/
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// CONFIG
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$param['cache_duration']= 3600 * 24 * 10; // 10 days util client cache expires
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$param['compress'] = true; // enable the code compression, should be activated but it can be usefull to desactivate it for easier error retrieving (true or false)
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$param['debug'] = false; // Enable this option if you need debuging info
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$param['use_disk_cache']= true; // If you enable this option gzip files will be cached on disk.
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$param['use_gzip']= true; // Enable gzip compression
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// END CONFIG
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$compressor= new Compressor($param);
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class Compressor{
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function compressor($param)
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{
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$this->__construct($param);
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}
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function __construct($param)
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{
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$this->start_time= $this->get_microtime();
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$this->file_loaded_size=0;
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$this->param= $param;
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$this->script_list="";
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$this->path= dirname(__FILE__)."/";
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if(isset($_GET['plugins'])){
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$this->load_all_plugins= true;
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$this->full_cache_file= $this->path."edit_area_full_with_plugins.js";
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$this->gzip_cache_file= $this->path."edit_area_full_with_plugins.gz";
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}else{
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$this->load_all_plugins= false;
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$this->full_cache_file= $this->path."edit_area_full.js";
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$this->gzip_cache_file= $this->path."edit_area_full.gz";
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}
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$this->check_gzip_use();
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$this->send_headers();
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$this->check_cache();
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$this->load_files();
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$this->send_datas();
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}
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function send_headers()
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{
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header("Content-type: text/javascript; charset: UTF-8");
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header("Vary: Accept-Encoding"); // Handle proxies
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header(sprintf("Expires: %s GMT", gmdate("D, d M Y H:i:s", time() + $this->param['cache_duration'])) );
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if($this->use_gzip)
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header("Content-Encoding: ".$this->gzip_enc_header);
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}
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function check_gzip_use()
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{
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$encodings = array();
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$desactivate_gzip=false;
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if (isset($_SERVER['HTTP_ACCEPT_ENCODING']))
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$encodings = explode(',', strtolower(preg_replace("/\s+/", "", $_SERVER['HTTP_ACCEPT_ENCODING'])));
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// desactivate gzip for IE version < 7
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if(preg_match("/(?:msie )([0-9.]+)/i", $_SERVER['HTTP_USER_AGENT'], $ie))
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{
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if($ie[1]<7)
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$desactivate_gzip=true;
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}
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// Check for gzip header or northon internet securities
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if (!$desactivate_gzip && $this->param['use_gzip'] && (in_array('gzip', $encodings) || in_array('x-gzip', $encodings) || isset($_SERVER['---------------'])) && function_exists('ob_gzhandler') && !ini_get('zlib.output_compression')) {
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$this->gzip_enc_header= in_array('x-gzip', $encodings) ? "x-gzip" : "gzip";
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$this->use_gzip=true;
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$this->cache_file=$this->gzip_cache_file;
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}else{
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$this->use_gzip=false;
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$this->cache_file=$this->full_cache_file;
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}
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}
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function check_cache()
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{
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// Only gzip the contents if clients and server support it
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if (file_exists($this->cache_file)) {
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// check if cache file must be updated
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$cache_date=0;
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if ($dir = opendir($this->path)) {
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while (($file = readdir($dir)) !== false) {
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if(is_file($this->path.$file) && $file!="." && $file!="..")
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$cache_date= max($cache_date, filemtime($this->path.$file));
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}
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closedir($dir);
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}
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if($this->load_all_plugins){
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$plug_path= $this->path."plugins/";
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if (($dir = @opendir($plug_path)) !== false)
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{
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while (($file = readdir($dir)) !== false)
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{
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if ($file !== "." && $file !== "..")
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{
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if(is_dir($plug_path.$file) && file_exists($plug_path.$file."/".$file.".js"))
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$cache_date= max($cache_date, filemtime("plugins/".$file."/".$file.".js"));
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}
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}
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closedir($dir);
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}
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}
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if(filemtime($this->cache_file) >= $cache_date){
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// if cache file is up to date
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$last_modified = gmdate("D, d M Y H:i:s",filemtime($this->cache_file))." GMT";
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if (isset($_SERVER["HTTP_IF_MODIFIED_SINCE"]) && strcasecmp($_SERVER["HTTP_IF_MODIFIED_SINCE"], $last_modified) === 0)
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{
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header("HTTP/1.1 304 Not Modified");
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header("Last-modified: ".$last_modified);
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header("Cache-Control: Public"); // Tells HTTP 1.1 clients to cache
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header("Pragma:"); // Tells HTTP 1.0 clients to cache
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}
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else
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{
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header("Last-modified: ".$last_modified);
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header("Cache-Control: Public"); // Tells HTTP 1.1 clients to cache
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header("Pragma:"); // Tells HTTP 1.0 clients to cache
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header('Content-Length: '.filesize($this->cache_file));
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echo file_get_contents($this->cache_file);
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}
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die;
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}
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}
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return false;
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}
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function load_files()
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{
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$loader= $this->get_content("edit_area_loader.js")."\n";
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// get the list of other files to load
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$loader= preg_replace("/(t\.scripts_to_load=\s*)\[([^\]]*)\];/e"
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, "\$this->replace_scripts('script_list', '\\1', '\\2')"
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, $loader);
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$loader= preg_replace("/(t\.sub_scripts_to_load=\s*)\[([^\]]*)\];/e"
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, "\$this->replace_scripts('sub_script_list', '\\1', '\\2')"
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, $loader);
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// replace languages names
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$reg_path= $this->path."reg_syntax/";
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$a_displayName = array();
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if (($dir = @opendir($reg_path)) !== false)
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{
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while (($file = readdir($dir)) !== false)
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{
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if( $file !== "." && $file !== ".." && ( $pos = strpos( $file, '.js' ) ) !== false )
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{
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$jsContent = $this->file_get_contents( $reg_path.$file );
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if( preg_match( '@(\'|")DISPLAY_NAME\1\s*:\s*(\'|")(.*)\2@', $jsContent, $match ) )
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{
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$a_displayName[] = "'". substr( $file, 0, $pos ) ."':'". clHtmlSpecialChars( $match[3], ENT_QUOTES ) ."'";
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}
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}
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}
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closedir($dir);
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}
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$loader = str_replace( '/*syntax_display_name_AUTO-FILL-BY-COMPRESSOR*/', implode( ",", $a_displayName ), $loader );
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$this->datas= $loader;
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$this->compress_javascript($this->datas);
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// load other scripts needed for the loader
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preg_match_all('/"([^"]*)"/', $this->script_list, $match);
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foreach($match[1] as $key => $value)
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{
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$content= $this->get_content(preg_replace("/\\|\//i", "", $value).".js");
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$this->compress_javascript($content);
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$this->datas.= $content."\n";
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}
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//$this->datas);
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//$this->datas= preg_replace('/(( |\t|\r)*\n( |\t)*)+/s', "", $this->datas);
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// improved compression step 1/2
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$this->datas= preg_replace(array("/(\b)EditAreaLoader(\b)/", "/(\b)editAreaLoader(\b)/", "/(\b)editAreas(\b)/"), array("EAL", "eAL", "eAs"), $this->datas);
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//$this->datas= str_replace(array("EditAreaLoader", "editAreaLoader", "editAreas"), array("EAL", "eAL", "eAs"), $this->datas);
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$this->datas.= "var editAreaLoader= eAL;var editAreas=eAs;EditAreaLoader=EAL;";
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// load sub scripts
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$sub_scripts="";
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$sub_scripts_list= array();
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preg_match_all('/"([^"]*)"/', $this->sub_script_list, $match);
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foreach($match[1] as $value){
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$sub_scripts_list[]= preg_replace("/\\|\//i", "", $value).".js";
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}
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if($this->load_all_plugins){
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// load plugins scripts
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$plug_path= $this->path."plugins/";
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if (($dir = @opendir($plug_path)) !== false)
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{
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while (($file = readdir($dir)) !== false)
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{
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if ($file !== "." && $file !== "..")
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{
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if(is_dir($plug_path.$file) && file_exists($plug_path.$file."/".$file.".js"))
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$sub_scripts_list[]= "plugins/".$file."/".$file.".js";
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}
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}
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closedir($dir);
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}
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}
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foreach($sub_scripts_list as $value){
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$sub_scripts.= $this->get_javascript_content($value);
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}
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// improved compression step 2/2
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$sub_scripts= preg_replace(array("/(\b)editAreaLoader(\b)/", "/(\b)editAreas(\b)/", "/(\b)editArea(\b)/", "/(\b)EditArea(\b)/"), array("eAL", "eAs", "eA", "EA"), $sub_scripts);
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// $sub_scripts= str_replace(array("editAreaLoader", "editAreas", "editArea", "EditArea"), array("eAL", "eAs", "eA", "EA"), $sub_scripts);
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$sub_scripts.= "var editArea= eA;EditArea=EA;";
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// add the scripts
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// $this->datas.= sprintf("editAreaLoader.iframe_script= \"<script type='text/javascript'>%s</script>\";\n", $sub_scripts);
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// add the script and use a last compression
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if( $this->param['compress'] )
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{
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$last_comp = array( 'Á' => 'this',
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'Â' => 'textarea',
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'Ã' => 'function',
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'Ä' => 'prototype',
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'Å' => 'settings',
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'Æ' => 'length',
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'Ç' => 'style',
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'È' => 'parent',
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'É' => 'last_selection',
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'Ê' => 'value',
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'Ë' => 'true',
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'Ì' => 'false'
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/*,
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'Î' => '"',
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'Ï' => "\n",
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'À' => "\r"*/);
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}
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else
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{
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$last_comp = array();
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}
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$js_replace= '';
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foreach( $last_comp as $key => $val )
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$js_replace .= ".replace(/". $key ."/g,'". str_replace( array("\n", "\r"), array('\n','\r'), $val ) ."')";
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$this->datas.= sprintf("editAreaLoader.iframe_script= \"<script type='text/javascript'>%s</script>\"%s;\n",
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str_replace( array_values($last_comp), array_keys($last_comp), $sub_scripts ),
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$js_replace);
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if($this->load_all_plugins)
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$this->datas.="editAreaLoader.all_plugins_loaded=true;\n";
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// load the template
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$this->datas.= sprintf("editAreaLoader.template= \"%s\";\n", $this->get_html_content("template.html"));
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// load the css
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$this->datas.= sprintf("editAreaLoader.iframe_css= \"<style>%s</style>\";\n", $this->get_css_content("edit_area.css"));
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// $this->datas= "function editArea(){};editArea.prototype.loader= function(){alert('bouhbouh');} var a= new editArea();a.loader();";
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}
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function send_datas()
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{
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if($this->param['debug']){
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$header=sprintf("/* USE PHP COMPRESSION\n");
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$header.=sprintf("javascript size: based files: %s => PHP COMPRESSION => %s ", $this->file_loaded_size, strlen($this->datas));
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if($this->use_gzip){
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$gzip_datas= gzencode($this->datas, 9, FORCE_GZIP);
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$header.=sprintf("=> GZIP COMPRESSION => %s", strlen($gzip_datas));
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$ratio = round(100 - strlen($gzip_datas) / $this->file_loaded_size * 100.0);
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}else{
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$ratio = round(100 - strlen($this->datas) / $this->file_loaded_size * 100.0);
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}
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$header.=sprintf(", reduced by %s%%\n", $ratio);
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$header.=sprintf("compression time: %s\n", $this->get_microtime()-$this->start_time);
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$header.=sprintf("%s\n", implode("\n", $this->infos));
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$header.=sprintf("*/\n");
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$this->datas= $header.$this->datas;
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}
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$mtime= time(); // ensure that the 2 disk files will have the same update time
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// generate gzip file and cahce it if using disk cache
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if($this->use_gzip){
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$this->gzip_datas= gzencode($this->datas, 9, FORCE_GZIP);
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if($this->param['use_disk_cache'])
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$this->file_put_contents($this->gzip_cache_file, $this->gzip_datas, $mtime);
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}
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// generate full js file and cache it if using disk cache
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if($this->param['use_disk_cache'])
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$this->file_put_contents($this->full_cache_file, $this->datas, $mtime);
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// generate output
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if($this->use_gzip)
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echo $this->gzip_datas;
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else
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echo $this->datas;
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// die;
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}
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function get_content($end_uri)
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{
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$end_uri=preg_replace("/\.\./", "", $end_uri); // Remove any .. (security)
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$file= $this->path.$end_uri;
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if(file_exists($file)){
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$this->infos[]=sprintf("'%s' loaded", $end_uri);
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/*$fd = fopen($file, 'rb');
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$content = fread($fd, filesize($file));
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fclose($fd);
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return $content;*/
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return $this->file_get_contents($file);
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}else{
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$this->infos[]=sprintf("'%s' not loaded", $end_uri);
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return "";
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}
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}
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function get_javascript_content($end_uri)
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{
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$val=$this->get_content($end_uri);
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$this->compress_javascript($val);
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$this->prepare_string_for_quotes($val);
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return $val;
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}
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function compress_javascript(&$code)
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{
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if($this->param['compress'])
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{
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// remove all comments
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// (\"(?:[^\"\\]*(?:\\\\)*(?:\\\"?)?)*(?:\"|$))|(\'(?:[^\'\\]*(?:\\\\)*(?:\\'?)?)*(?:\'|$))|(?:\/\/(?:.|\r|\t)*?(\n|$))|(?:\/\*(?:.|\n|\r|\t)*?(?:\*\/|$))
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$code= preg_replace("/(\"(?:[^\"\\\\]*(?:\\\\\\\\)*(?:\\\\\"?)?)*(?:\"|$))|(\'(?:[^\'\\\\]*(?:\\\\\\\\)*(?:\\\\\'?)?)*(?:\'|$))|(?:\/\/(?:.|\r|\t)*?(\n|$))|(?:\/\*(?:.|\n|\r|\t)*?(?:\*\/|$))/s", "$1$2$3", $code);
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// remove line return, empty line and tabulation
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$code= preg_replace('/(( |\t|\r)*\n( |\t)*)+/s', " ", $code);
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// add line break before "else" otherwise navigators can't manage to parse the file
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$code= preg_replace('/(\b(else)\b)/', "\n$1", $code);
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// remove unnecessary spaces
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$code= preg_replace('/( |\t|\r)*(;|\{|\}|=|==|\-|\+|,|\(|\)|\|\||&\&|\:)( |\t|\r)*/', "$2", $code);
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}
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}
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function get_css_content($end_uri){
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$code=$this->get_content($end_uri);
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// remove comments
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$code= preg_replace("/(?:\/\*(?:.|\n|\r|\t)*?(?:\*\/|$))/s", "", $code);
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// remove spaces
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$code= preg_replace('/(( |\t|\r)*\n( |\t)*)+/s', "", $code);
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// remove spaces
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$code= preg_replace('/( |\t|\r)?(\:|,|\{|\})( |\t|\r)+/', "$2", $code);
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$this->prepare_string_for_quotes($code);
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return $code;
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}
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function get_html_content($end_uri){
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$code=$this->get_content($end_uri);
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//$code= preg_replace('/(\"(?:\\\"|[^\"])*(?:\"|$))|' . "(\'(?:\\\'|[^\'])*(?:\'|$))|(?:\/\/(?:.|\r|\t)*?(\n|$))|(?:\/\*(?:.|\n|\r|\t)*?(?:\*\/|$))/s", "$1$2$3", $code);
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$code= preg_replace('/(( |\t|\r)*\n( |\t)*)+/s', " ", $code);
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$this->prepare_string_for_quotes($code);
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return $code;
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}
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function prepare_string_for_quotes(&$str){
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// prepare the code to be putted into quotes
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/*$pattern= array("/(\\\\)?\"/", '/\\\n/' , '/\\\r/' , "/(\r?\n)/");
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$replace= array('$1$1\\"', '\\\\\\n', '\\\\\\r' , '\\\n"$1+"');*/
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$pattern= array("/(\\\\)?\"/", '/\\\n/' , '/\\\r/' , "/(\r?\n)/");
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if($this->param['compress'])
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$replace= array('$1$1\\"', '\\\\\\n', '\\\\\\r' , '\n');
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else
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$replace= array('$1$1\\"', '\\\\\\n', '\\\\\\r' , "\\n\"\n+\"");
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$str= preg_replace($pattern, $replace, $str);
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}
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function replace_scripts($var, $param1, $param2)
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{
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$this->$var=stripslashes($param2);
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return $param1."[];";
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}
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/* for php version that have not thoses functions */
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function file_get_contents($file)
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{
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$fd = fopen($file, 'rb');
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$content = fread($fd, filesize($file));
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fclose($fd);
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$this->file_loaded_size+= strlen($content);
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return $content;
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}
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function file_put_contents($file, &$content, $mtime=-1)
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{
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if($mtime==-1)
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$mtime=time();
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$fp = @fopen($file, "wb");
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if ($fp) {
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fwrite($fp, $content);
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fclose($fp);
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touch($file, $mtime);
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return true;
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}
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return false;
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}
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function get_microtime()
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{
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list($usec, $sec) = explode(" ", microtime());
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return ((float)$usec + (float)$sec);
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}
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}
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?>
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