project/static/js/edit_area_compressor.php

   1 <?php\r
   2         /******\r
   3          *\r
   4          *      EditArea PHP compressor\r
   5          *      Developped by Christophe Dolivet\r
   6          *      Released under LGPL, Apache and BSD licenses\r
   7          *      v1.1.3 (2007/01/18)      \r
   8          *\r
   9         ******/\r
  10         \r
  11         // CONFIG\r
  12         $param['cache_duration']= 3600 * 24 * 10;               // 10 days util client cache expires\r
  13         $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)\r
  14         $param['debug'] = false;                                                // Enable this option if you need debuging info\r
  15         $param['use_disk_cache']= true;                                 // If you enable this option gzip files will be cached on disk.\r
  16         $param['use_gzip']= true;                                               // Enable gzip compression\r
  17         // END CONFIG\r
  18         \r
  19         $compressor= new Compressor($param);\r
  20         \r
  21         class Compressor{\r
  22         \r
  23                 \r
  24                 function compressor($param)\r
  25                 {\r
  26                         $this->__construct($param);\r
  27                 }\r
  28                 \r
  29                 function __construct($param)\r
  30                 {\r
  31                         $this->start_time= $this->get_microtime();\r
  32                         $this->file_loaded_size=0;\r
  33                         $this->param= $param;\r
  34                         $this->script_list="";\r
  35                         $this->path= dirname(__FILE__)."/";\r
  36                         if(isset($_GET['plugins'])){\r
  37                                 $this->load_all_plugins= true;\r
  38                                 $this->full_cache_file= $this->path."edit_area_full_with_plugins.js";\r
  39                                 $this->gzip_cache_file= $this->path."edit_area_full_with_plugins.gz";\r
  40                         }else{\r
  41                                 $this->load_all_plugins= false;\r
  42                                 $this->full_cache_file= $this->path."edit_area_full.js";\r
  43                                 $this->gzip_cache_file= $this->path."edit_area_full.gz";\r
  44                         }\r
  45                         \r
  46                         $this->check_gzip_use();\r
  47                         $this->send_headers();\r
  48                         $this->check_cache();\r
  49                         $this->load_files();\r
  50                         $this->send_datas();\r
  51                 }\r
  52                 \r
  53                 function send_headers()\r
  54                 {\r
  55                         header("Content-type: text/javascript; charset: UTF-8");\r
  56                         header("Vary: Accept-Encoding"); // Handle proxies\r
  57                         header(sprintf("Expires: %s GMT", gmdate("D, d M Y H:i:s", time() + $this->param['cache_duration'])) );\r
  58                         if($this->use_gzip)\r
  59                                 header("Content-Encoding: ".$this->gzip_enc_header);\r
  60                 }\r
  61                 \r
  62                 function check_gzip_use()\r
  63                 {\r
  64                         $encodings = array();\r
  65                         $desactivate_gzip=false;\r
  66                                         \r
  67                         if (isset($_SERVER['HTTP_ACCEPT_ENCODING']))\r
  68                                 $encodings = explode(',', strtolower(preg_replace("/\s+/", "", $_SERVER['HTTP_ACCEPT_ENCODING'])));\r
  69                         \r
  70                         // desactivate gzip for IE version < 7\r
  71                         if(preg_match("/(?:msie )([0-9.]+)/i", $_SERVER['HTTP_USER_AGENT'], $ie))\r
  72                         {\r
  73                                 if($ie[1]<7)\r
  74                                         $desactivate_gzip=true; \r
  75                         }\r
  76                         \r
  77                         // Check for gzip header or northon internet securities\r
  78                         if (!$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')) {\r
  79                                 $this->gzip_enc_header= in_array('x-gzip', $encodings) ? "x-gzip" : "gzip";\r
  80                                 $this->use_gzip=true;\r
  81                                 $this->cache_file=$this->gzip_cache_file;\r
  82                         }else{\r
  83                                 $this->use_gzip=false;\r
  84                                 $this->cache_file=$this->full_cache_file;\r
  85                         }\r
  86                 }\r
  87                 \r
  88                 function check_cache()\r
  89                 {\r
  90                         // Only gzip the contents if clients and server support it\r
  91                         if (file_exists($this->cache_file)) {\r
  92                                 // check if cache file must be updated\r
  93                                 $cache_date=0;                          \r
  94                                 if ($dir = opendir($this->path)) {\r
  95                                         while (($file = readdir($dir)) !== false) {\r
  96                                                 if(is_file($this->path.$file) && $file!="." && $file!="..")\r
  97                                                         $cache_date= max($cache_date, filemtime($this->path.$file));\r
  98                                         }\r
  99                                         closedir($dir);\r
 100                                 }\r
 101                                 if($this->load_all_plugins){\r
 102                                         $plug_path= $this->path."plugins/";\r
 103                                         if (($dir = @opendir($plug_path)) !== false)\r
 104                                         {\r
 105                                                 while (($file = readdir($dir)) !== false)\r
 106                                                 {\r
 107                                                         if ($file !== "." && $file !== "..")\r
 108                                                         {\r
 109                                                                 if(is_dir($plug_path.$file) && file_exists($plug_path.$file."/".$file.".js"))\r
 110                                                                         $cache_date= max($cache_date, filemtime("plugins/".$file."/".$file.".js"));\r
 111                                                         }\r
 112                                                 }\r
 113                                                 closedir($dir);\r
 114                                         }\r
 115                                 }\r
 116 \r
 117                                 if(filemtime($this->cache_file) >= $cache_date){\r
 118                                         // if cache file is up to date\r
 119                                         $last_modified = gmdate("D, d M Y H:i:s",filemtime($this->cache_file))." GMT";\r
 120                                         if (isset($_SERVER["HTTP_IF_MODIFIED_SINCE"]) && strcasecmp($_SERVER["HTTP_IF_MODIFIED_SINCE"], $last_modified) === 0)\r
 121                                         {\r
 122                                                 header("HTTP/1.1 304 Not Modified");\r
 123                                                 header("Last-modified: ".$last_modified);\r
 124                                                 header("Cache-Control: Public"); // Tells HTTP 1.1 clients to cache\r
 125                                                 header("Pragma:"); // Tells HTTP 1.0 clients to cache\r
 126                                         }\r
 127                                         else\r
 128                                         {\r
 129                                                 header("Last-modified: ".$last_modified);\r
 130                                                 header("Cache-Control: Public"); // Tells HTTP 1.1 clients to cache\r
 131                                                 header("Pragma:"); // Tells HTTP 1.0 clients to cache\r
 132                                                 header('Content-Length: '.filesize($this->cache_file));\r
 133                                                 echo file_get_contents($this->cache_file);\r
 134                                         }                               \r
 135                                         die;\r
 136                                 }\r
 137                         }\r
 138                         return false;\r
 139                 }\r
 140                 \r
 141                 function load_files()\r
 142                 {\r
 143                         $loader= $this->get_content("edit_area_loader.js")."\n";\r
 144                         \r
 145                         // get the list of other files to load\r
 146                 $loader= preg_replace("/(t\.scripts_to_load=\s*)\[([^\]]*)\];/e"\r
 147                                                 , "\$this->replace_scripts('script_list', '\\1', '\\2')"\r
 148                                                 , $loader);\r
 149                 \r
 150                         $loader= preg_replace("/(t\.sub_scripts_to_load=\s*)\[([^\]]*)\];/e"\r
 151                                                 , "\$this->replace_scripts('sub_script_list', '\\1', '\\2')"\r
 152                                                 , $loader);\r
 153 \r
 154                         $this->datas= $loader;\r
 155                         $this->compress_javascript($this->datas);\r
 156                         \r
 157                         // load other scripts needed for the loader\r
 158                         preg_match_all('/"([^"]*)"/', $this->script_list, $match);\r
 159                         foreach($match[1] as $key => $value)\r
 160                         {\r
 161                                 $content= $this->get_content(preg_replace("/\\|\//i", "", $value).".js");\r
 162                                 $this->compress_javascript($content);\r
 163                                 $this->datas.= $content."\n";\r
 164                         }\r
 165                         //$this->datas);\r
 166                         //$this->datas= preg_replace('/(( |\t|\r)*\n( |\t)*)+/s', "", $this->datas);\r
 167                         \r
 168                         // improved compression step 1/2        \r
 169                         $this->datas= preg_replace(array("/(\b)EditAreaLoader(\b)/", "/(\b)editAreaLoader(\b)/", "/(\b)editAreas(\b)/"), array("EAL", "eAL", "eAs"), $this->datas);\r
 170                         //$this->datas= str_replace(array("EditAreaLoader", "editAreaLoader", "editAreas"), array("EAL", "eAL", "eAs"), $this->datas);\r
 171                         $this->datas.= "var editAreaLoader= eAL;var editAreas=eAs;EditAreaLoader=EAL;";\r
 172                 \r
 173                         // load sub scripts\r
 174                         $sub_scripts="";\r
 175                         $sub_scripts_list= array();\r
 176                         preg_match_all('/"([^"]*)"/', $this->sub_script_list, $match);\r
 177                         foreach($match[1] as $value){\r
 178                                 $sub_scripts_list[]= preg_replace("/\\|\//i", "", $value).".js";\r
 179                         }\r
 180                 \r
 181                         if($this->load_all_plugins){\r
 182                                 // load plugins scripts\r
 183                                 $plug_path= $this->path."plugins/";\r
 184                                 if (($dir = @opendir($plug_path)) !== false)\r
 185                                 {\r
 186                                         while (($file = readdir($dir)) !== false)\r
 187                                         {\r
 188                                                 if ($file !== "." && $file !== "..")\r
 189                                                 {\r
 190                                                         if(is_dir($plug_path.$file) && file_exists($plug_path.$file."/".$file.".js"))\r
 191                                                                 $sub_scripts_list[]= "plugins/".$file."/".$file.".js";\r
 192                                                 }\r
 193                                         }\r
 194                                         closedir($dir);\r
 195                                 }\r
 196                         }\r
 197                                                         \r
 198                         foreach($sub_scripts_list as $value){\r
 199                                 $sub_scripts.= $this->get_javascript_content($value);\r
 200                         }\r
 201                         // improved compression step 2/2        \r
 202                         $sub_scripts= preg_replace(array("/(\b)editAreaLoader(\b)/", "/(\b)editAreas(\b)/", "/(\b)editArea(\b)/", "/(\b)EditArea(\b)/"), array("eAL", "eAs", "eA", "EA"), $sub_scripts);\r
 203                 //      $sub_scripts= str_replace(array("editAreaLoader", "editAreas", "editArea", "EditArea"), array("eAL", "eAs", "eA", "EA"), $sub_scripts);\r
 204                         $sub_scripts.= "var editArea= eA;EditArea=EA;";\r
 205                         \r
 206                         \r
 207                         // add the scripts\r
 208                 //      $this->datas.= sprintf("editAreaLoader.iframe_script= \"<script type='text/javascript'>%s</script>\";\n", $sub_scripts);\r
 209                 \r
 210                 \r
 211                         // add the script and use a last compression \r
 212                         if( $this->param['compress'] )\r
 213                         {\r
 214                                 $last_comp      = array( 'Á' => 'this',\r
 215                                                                  'Â' => 'textarea',\r
 216                                                                  'Ã' => 'function',\r
 217                                                                  'Ä' => 'prototype',\r
 218                                                                  'Å' => 'settings',\r
 219                                                                  'Æ' => 'length',\r
 220                                                                  'Ç' => 'style',\r
 221                                                                  'È' => 'parent',\r
 222                                                                  'É' => 'last_selection',\r
 223                                                                  'Ê' => 'value',\r
 224                                                                  'Ë' => 'true',\r
 225                                                                  'Ì' => 'false'\r
 226                                                                  /*,\r
 227                                                                         'Î' => '"',\r
 228                                                                  'Ï' => "\n",\r
 229                                                                  'À' => "\r"*/);\r
 230                         }\r
 231                         else\r
 232                         {\r
 233                                 $last_comp      = array();\r
 234                         }\r
 235                         \r
 236                         $js_replace= '';\r
 237                         foreach( $last_comp as $key => $val )\r
 238                                 $js_replace .= ".replace(/". $key ."/g,'". str_replace( array("\n", "\r"), array('\n','\r'), $val ) ."')";\r
 239                         \r
 240                         $this->datas.= sprintf("editAreaLoader.iframe_script= \"<script type='text/javascript'>%s</script>\"%s;\n",\r
 241                                                                 str_replace( array_values($last_comp), array_keys($last_comp), $sub_scripts ), \r
 242                                                                 $js_replace);\r
 243                         \r
 244                         if($this->load_all_plugins)\r
 245                                 $this->datas.="editAreaLoader.all_plugins_loaded=true;\n";\r
 246                 \r
 247                         \r
 248                         // load the template\r
 249                         $this->datas.= sprintf("editAreaLoader.template= \"%s\";\n", $this->get_html_content("template.html"));\r
 250                         // load the css\r
 251                         $this->datas.= sprintf("editAreaLoader.iframe_css= \"<style>%s</style>\";\n", $this->get_css_content("edit_area.css"));\r
 252                                         \r
 253                 //      $this->datas= "function editArea(){};editArea.prototype.loader= function(){alert('bouhbouh');} var a= new editArea();a.loader();";\r
 254                                         \r
 255                 }\r
 256                 \r
 257                 function send_datas()\r
 258                 {\r
 259                         if($this->param['debug']){\r
 260                                 $header=sprintf("/* USE PHP COMPRESSION\n");\r
 261                                 $header.=sprintf("javascript size: based files: %s => PHP COMPRESSION => %s ", $this->file_loaded_size, strlen($this->datas));\r
 262                                 if($this->use_gzip){\r
 263                                         $gzip_datas=  gzencode($this->datas, 9, FORCE_GZIP);                            \r
 264                                         $header.=sprintf("=> GZIP COMPRESSION => %s", strlen($gzip_datas));\r
 265                                         $ratio = round(100 - strlen($gzip_datas) / $this->file_loaded_size * 100.0);                    \r
 266                                 }else{\r
 267                                         $ratio = round(100 - strlen($this->datas) / $this->file_loaded_size * 100.0);\r
 268                                 }\r
 269                                 $header.=sprintf(", reduced by %s%%\n", $ratio);\r
 270                                 $header.=sprintf("compression time: %s\n", $this->get_microtime()-$this->start_time); \r
 271                                 $header.=sprintf("%s\n", implode("\n", $this->infos));\r
 272                                 $header.=sprintf("*/\n");\r
 273                                 $this->datas= $header.$this->datas;     \r
 274                         }\r
 275                         $mtime= time(); // ensure that the 2 disk files will have the same update time\r
 276                         // generate gzip file and cahce it if using disk cache\r
 277                         if($this->use_gzip){\r
 278                                 $this->gzip_datas= gzencode($this->datas, 9, FORCE_GZIP);\r
 279                                 if($this->param['use_disk_cache'])\r
 280                                         $this->file_put_contents($this->gzip_cache_file, $this->gzip_datas, $mtime);\r
 281                         }\r
 282                         \r
 283                         // generate full js file and cache it if using disk cache                       \r
 284                         if($this->param['use_disk_cache'])\r
 285                                 $this->file_put_contents($this->full_cache_file, $this->datas, $mtime);\r
 286                         \r
 287                         // generate output\r
 288                         if($this->use_gzip)\r
 289                                 echo $this->gzip_datas;\r
 290                         else\r
 291                                 echo $this->datas;\r
 292                                 \r
 293 //                      die;\r
 294                 }\r
 295                                 \r
 296                 \r
 297                 function get_content($end_uri)\r
 298                 {\r
 299                         $end_uri=preg_replace("/\.\./", "", $end_uri); // Remove any .. (security)\r
 300                         $file= $this->path.$end_uri;\r
 301                         if(file_exists($file)){\r
 302                                 $this->infos[]=sprintf("'%s' loaded", $end_uri);\r
 303                                 /*$fd = fopen($file, 'rb');\r
 304                                 $content = fread($fd, filesize($file));\r
 305                                 fclose($fd);\r
 306                                 return $content;*/\r
 307                                 return $this->file_get_contents($file);\r
 308                         }else{\r
 309                                 $this->infos[]=sprintf("'%s' not loaded", $end_uri);\r
 310                                 return "";\r
 311                         }\r
 312                 }\r
 313                 \r
 314                 function get_javascript_content($end_uri)\r
 315                 {\r
 316                         $val=$this->get_content($end_uri);\r
 317         \r
 318                         $this->compress_javascript($val);\r
 319                         $this->prepare_string_for_quotes($val);\r
 320                         return $val;\r
 321                 }\r
 322                 \r
 323                 function compress_javascript(&$code)\r
 324                 {\r
 325                         if($this->param['compress'])\r
 326                         {\r
 327                                 // remove all comments\r
 328                                 //      (\"(?:[^\"\\]*(?:\\\\)*(?:\\\"?)?)*(?:\"|$))|(\'(?:[^\'\\]*(?:\\\\)*(?:\\'?)?)*(?:\'|$))|(?:\/\/(?:.|\r|\t)*?(\n|$))|(?:\/\*(?:.|\n|\r|\t)*?(?:\*\/|$))\r
 329                                 $code= preg_replace("/(\"(?:[^\"\\\\]*(?:\\\\\\\\)*(?:\\\\\"?)?)*(?:\"|$))|(\'(?:[^\'\\\\]*(?:\\\\\\\\)*(?:\\\\\'?)?)*(?:\'|$))|(?:\/\/(?:.|\r|\t)*?(\n|$))|(?:\/\*(?:.|\n|\r|\t)*?(?:\*\/|$))/s", "$1$2$3", $code);\r
 330                                 // remove line return, empty line and tabulation\r
 331                                 $code= preg_replace('/(( |\t|\r)*\n( |\t)*)+/s', " ", $code);\r
 332                                 // add line break before "else" otherwise navigators can't manage to parse the file\r
 333                                 $code= preg_replace('/(\b(else)\b)/', "\n$1", $code);\r
 334                                 // remove unnecessary spaces\r
 335                                 $code= preg_replace('/( |\t|\r)*(;|\{|\}|=|==|\-|\+|,|\(|\)|\|\||&\&|\:)( |\t|\r)*/', "$2", $code);\r
 336                         }\r
 337                 }\r
 338                 \r
 339                 function get_css_content($end_uri){\r
 340                         $code=$this->get_content($end_uri);\r
 341                         // remove comments\r
 342                         $code= preg_replace("/(?:\/\*(?:.|\n|\r|\t)*?(?:\*\/|$))/s", "", $code);\r
 343                         // remove spaces\r
 344                         $code= preg_replace('/(( |\t|\r)*\n( |\t)*)+/s', "", $code);\r
 345                         // remove spaces\r
 346                         $code= preg_replace('/( |\t|\r)?(\:|,|\{|\})( |\t|\r)+/', "$2", $code);\r
 347                 \r
 348                         $this->prepare_string_for_quotes($code);\r
 349                         return $code;\r
 350                 }\r
 351                 \r
 352                 function get_html_content($end_uri){\r
 353                         $code=$this->get_content($end_uri);\r
 354                         //$code= preg_replace('/(\"(?:\\\"|[^\"])*(?:\"|$))|' . "(\'(?:\\\'|[^\'])*(?:\'|$))|(?:\/\/(?:.|\r|\t)*?(\n|$))|(?:\/\*(?:.|\n|\r|\t)*?(?:\*\/|$))/s", "$1$2$3", $code);\r
 355                         $code= preg_replace('/(( |\t|\r)*\n( |\t)*)+/s', " ", $code);\r
 356                         $this->prepare_string_for_quotes($code);\r
 357                         return $code;\r
 358                 }\r
 359                 \r
 360                 function prepare_string_for_quotes(&$str){\r
 361                         // prepare the code to be putted into quotes \r
 362                         /*$pattern= array("/(\\\\)?\"/", '/\\\n/'       , '/\\\r/'      , "/(\r?\n)/");\r
 363                         $replace= array('$1$1\\"', '\\\\\\n', '\\\\\\r' , '\\\n"$1+"');*/\r
 364                         $pattern= array("/(\\\\)?\"/", '/\\\n/' , '/\\\r/'      , "/(\r?\n)/");\r
 365                         if($this->param['compress'])\r
 366                                 $replace= array('$1$1\\"', '\\\\\\n', '\\\\\\r' , '\n');\r
 367                         else\r
 368                                 $replace= array('$1$1\\"', '\\\\\\n', '\\\\\\r' , "\\n\"\n+\"");\r
 369                         $str= preg_replace($pattern, $replace, $str);\r
 370                 }\r
 371                 \r
 372                 function replace_scripts($var, $param1, $param2)\r
 373                 {\r
 374                         $this->$var=stripslashes($param2);\r
 375                 return $param1."[];";\r
 376                 }\r
 377 \r
 378                 /* for php version that have not thoses functions */\r
 379                 function file_get_contents($file)\r
 380                 {\r
 381                         $fd = fopen($file, 'rb');\r
 382                         $content = fread($fd, filesize($file));\r
 383                         fclose($fd);\r
 384                         $this->file_loaded_size+= strlen($content);\r
 385                         return $content;                                \r
 386                 }\r
 387                 \r
 388                 function file_put_contents($file, &$content, $mtime=-1)\r
 389                 {\r
 390                         if($mtime==-1)\r
 391                                 $mtime=time();\r
 392                         $fp = @fopen($file, "wb");\r
 393                         if ($fp) {\r
 394                                 fwrite($fp, $content);\r
 395                                 fclose($fp);\r
 396                                 touch($file, $mtime);\r
 397                                 return true;\r
 398                         }\r
 399                         return false;\r
 400                 }\r
 401                 \r
 402                 function get_microtime()\r
 403                 {\r
 404                    list($usec, $sec) = explode(" ", microtime());\r
 405                    return ((float)$usec + (float)$sec);\r
 406                 }\r
 407         }       \r
 408 ?>\r