backup/cc/cc_lib/gral_lib/cssparser.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 class cssparser {
  18   private $css;
  19   private $html;
  20
  21   public function __construct($html = true) {
  22     // Register "destructor"
  23     core_shutdown_manager::register_function(array(&$this, "finalize"));
  24     $this->html = ($html != false);
  25     $this->Clear();
  26   }
  27
  28   /**
  29    * Old syntax of class constructor. Deprecated in PHP7.
  30    *
  31    * @deprecated since Moodle 3.1
  32    */
  33   public function cssparser($html = true) {
  34       debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
  35       self::__construct($html);
  36   }
  37
  38   function finalize() {
  39     unset($this->css);
  40   }
  41
  42   function Clear() {
  43     unset($this->css);
  44     $this->css = array();
  45     if($this->html) {
  46       $this->Add("ADDRESS", "");
  47       $this->Add("APPLET", "");
  48       $this->Add("AREA", "");
  49       $this->Add("A", "text-decoration : underline; color : Blue;");
  50       $this->Add("A:visited", "color : Purple;");
  51       $this->Add("BASE", "");
  52       $this->Add("BASEFONT", "");
  53       $this->Add("BIG", "");
  54       $this->Add("BLOCKQUOTE", "");
  55       $this->Add("BODY", "");
  56       $this->Add("BR", "");
  57       $this->Add("B", "font-weight: bold;");
  58       $this->Add("CAPTION", "");
  59       $this->Add("CENTER", "");
  60       $this->Add("CITE", "");
  61       $this->Add("CODE", "");
  62       $this->Add("DD", "");
  63       $this->Add("DFN", "");
  64       $this->Add("DIR", "");
  65       $this->Add("DIV", "");
  66       $this->Add("DL", "");
  67       $this->Add("DT", "");
  68       $this->Add("EM", "");
  69       $this->Add("FONT", "");
  70       $this->Add("FORM", "");
  71       $this->Add("H1", "");
  72       $this->Add("H2", "");
  73       $this->Add("H3", "");
  74       $this->Add("H4", "");
  75       $this->Add("H5", "");
  76       $this->Add("H6", "");
  77       $this->Add("HEAD", "");
  78       $this->Add("HR", "");
  79       $this->Add("HTML", "");
  80       $this->Add("IMG", "");
  81       $this->Add("INPUT", "");
  82       $this->Add("ISINDEX", "");
  83       $this->Add("I", "font-style: italic;");
  84       $this->Add("KBD", "");
  85       $this->Add("LINK", "");
  86       $this->Add("LI", "");
  87       $this->Add("MAP", "");
  88       $this->Add("MENU", "");
  89       $this->Add("META", "");
  90       $this->Add("OL", "");
  91       $this->Add("OPTION", "");
  92       $this->Add("PARAM", "");
  93       $this->Add("PRE", "");
  94       $this->Add("P", "");
  95       $this->Add("SAMP", "");
  96       $this->Add("SCRIPT", "");
  97       $this->Add("SELECT", "");
  98       $this->Add("SMALL", "");
  99       $this->Add("STRIKE", "");
 100       $this->Add("STRONG", "");
 101       $this->Add("STYLE", "");
 102       $this->Add("SUB", "");
 103       $this->Add("SUP", "");
 104       $this->Add("TABLE", "");
 105       $this->Add("TD", "");
 106       $this->Add("TEXTAREA", "");
 107       $this->Add("TH", "");
 108       $this->Add("TITLE", "");
 109       $this->Add("TR", "");
 110       $this->Add("TT", "");
 111       $this->Add("UL", "");
 112       $this->Add("U", "text-decoration : underline;");
 113       $this->Add("VAR", "");
 114     }
 115   }
 116
 117   function SetHTML($html) {
 118     $this->html = ($html != false);
 119   }
 120
 121   function Add($key, $codestr) {
 122     $key = strtolower($key);
 123     $codestr = strtolower($codestr);
 124     if(!isset($this->css[$key])) {
 125       $this->css[$key] = array();
 126     }
 127     $codes = explode(";",$codestr);
 128     if(count($codes) > 0) {
 129       $codekey=''; $codevalue='';
 130       foreach($codes as $code) {
 131         $code = trim($code);
 132         $this->assignValues(explode(":",$code),$codekey,$codevalue);
 133         if(strlen($codekey) > 0) {
 134           $this->css[$key][trim($codekey)] = trim($codevalue);
 135         }
 136       }
 137     }
 138   }
 139
 140   private function assignValues($arr,&$val1,&$val2) {
 141       $n = count($arr);
 142       if ($n > 0) {
 143           $val1=$arr[0];
 144           $val2=($n > 1) ? $arr[1] : '';
 145       }
 146   }
 147   function Get($key, $property) {
 148     $key = strtolower($key);
 149     $property = strtolower($property);
 150     $tag='';$subtag='';$class='';$id='';
 151     $this->assignValues(explode(":",$key),$tag,$subtag);
 152     $this->assignValues(explode(".",$tag),$tag,$class);
 153     $this->assignValues(explode("#",$tag),$tag,$id);
 154     $result = "";
 155     $_subtag=''; $_class=''; $_id='';
 156     foreach($this->css as $_tag => $value) {
 157       $this->assignValues(explode(":",$_tag),$_tag,$_subtag);
 158       $this->assignValues(explode(".",$_tag),$_tag,$_class);
 159       $this->assignValues(explode("#",$_tag),$_tag,$_id);
 160
 161       $tagmatch = (strcmp($tag, $_tag) == 0) | (strlen($_tag) == 0);
 162       $subtagmatch = (strcmp($subtag, $_subtag) == 0) | (strlen($_subtag) == 0);
 163       $classmatch = (strcmp($class, $_class) == 0) | (strlen($_class) == 0);
 164       $idmatch = (strcmp($id, $_id) == 0);
 165
 166       if($tagmatch & $subtagmatch & $classmatch & $idmatch) {
 167         $temp = $_tag;
 168         if((strlen($temp) > 0) & (strlen($_class) > 0)) {
 169           $temp .= ".".$_class;
 170         } elseif(strlen($temp) == 0) {
 171           $temp = ".".$_class;
 172         }
 173         if((strlen($temp) > 0) & (strlen($_subtag) > 0)) {
 174           $temp .= ":".$_subtag;
 175         } elseif(strlen($temp) == 0) {
 176           $temp = ":".$_subtag;
 177         }
 178         if(isset($this->css[$temp][$property])) {
 179           $result = $this->css[$temp][$property];
 180         }
 181       }
 182     }
 183     return $result;
 184   }
 185
 186   function GetSection($key) {
 187     $key = strtolower($key);
 188     $tag='';$subtag='';$class='';$id='';
 189     $_subtag=''; $_class=''; $_id='';
 190
 191     $this->assignValues(explode(":",$key),$tag,$subtag);
 192     $this->assignValues(explode(".",$tag),$tag,$class);
 193     $this->assignValues(explode("#",$tag),$tag,$id);
 194     $result = array();
 195     foreach($this->css as $_tag => $value) {
 196       $this->assignValues(explode(":",$_tag),$_tag,$_subtag);
 197       $this->assignValues(explode(".",$_tag),$_tag,$_class);
 198       $this->assignValues(explode("#",$_tag),$_tag,$_id);
 199
 200       $tagmatch = (strcmp($tag, $_tag) == 0) | (strlen($_tag) == 0);
 201       $subtagmatch = (strcmp($subtag, $_subtag) == 0) | (strlen($_subtag) == 0);
 202       $classmatch = (strcmp($class, $_class) == 0) | (strlen($_class) == 0);
 203       $idmatch = (strcmp($id, $_id) == 0);
 204
 205       if($tagmatch & $subtagmatch & $classmatch & $idmatch) {
 206         $temp = $_tag;
 207         if((strlen($temp) > 0) & (strlen($_class) > 0)) {
 208           $temp .= ".".$_class;
 209         } elseif(strlen($temp) == 0) {
 210           $temp = ".".$_class;
 211         }
 212         if((strlen($temp) > 0) & (strlen($_subtag) > 0)) {
 213           $temp .= ":".$_subtag;
 214         } elseif(strlen($temp) == 0) {
 215           $temp = ":".$_subtag;
 216         }
 217         foreach($this->css[$temp] as $property => $value) {
 218           $result[$property] = $value;
 219         }
 220       }
 221     }
 222     return $result;
 223   }
 224
 225   function ParseStr($str) {
 226     $this->Clear();
 227     // Remove comments
 228     $str = preg_replace("/\/\*(.*)?\*\//Usi", "", $str);
 229     // Parse this damn csscode
 230     $parts = explode("}",$str);
 231     if(count($parts) > 0) {
 232       foreach($parts as $part) {
 233         $keystr='';$codestr='';
 234         $this->assignValues(explode("{",$part),$keystr,$codestr);
 235         $keys = explode(",",trim($keystr));
 236         if(count($keys) > 0) {
 237           foreach($keys as $key) {
 238             if(strlen($key) > 0) {
 239               $key = str_replace("\n", "", $key);
 240               $key = str_replace("\\", "", $key);
 241               $this->Add($key, trim($codestr));
 242             }
 243           }
 244         }
 245       }
 246     }
 247     //
 248     return (count($this->css) > 0);
 249   }
 250
 251   function Parse($filename) {
 252     $this->Clear();
 253     if(file_exists($filename)) {
 254       return $this->ParseStr(file_get_contents($filename));
 255     } else {
 256       return false;
 257     }
 258   }
 259
 260   function GetCSS() {
 261     $result = "";
 262     foreach($this->css as $key => $values) {
 263       $result .= $key." {\n";
 264       foreach($values as $key => $value) {
 265         $result .= "  $key: $value;\n";
 266       }
 267       $result .= "}\n\n";
 268     }
 269     return $result;
 270   }
 271 }