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 $html;
  20
  21   function cssparser($html = true) {
  22     // Register "destructor"
  23     register_shutdown_function(array(&$this, "finalize"));
  24     $this->html = ($html != false);
  25     $this->Clear();
  26   }
  27
  28   function finalize() {
  29     unset($this->css);
  30   }
  31
  32   function Clear() {
  33     unset($this->css);
  34     $this->css = array();
  35     if($this->html) {
  36       $this->Add("ADDRESS", "");
  37       $this->Add("APPLET", "");
  38       $this->Add("AREA", "");
  39       $this->Add("A", "text-decoration : underline; color : Blue;");
  40       $this->Add("A:visited", "color : Purple;");
  41       $this->Add("BASE", "");
  42       $this->Add("BASEFONT", "");
  43       $this->Add("BIG", "");
  44       $this->Add("BLOCKQUOTE", "");
  45       $this->Add("BODY", "");
  46       $this->Add("BR", "");
  47       $this->Add("B", "font-weight: bold;");
  48       $this->Add("CAPTION", "");
  49       $this->Add("CENTER", "");
  50       $this->Add("CITE", "");
  51       $this->Add("CODE", "");
  52       $this->Add("DD", "");
  53       $this->Add("DFN", "");
  54       $this->Add("DIR", "");
  55       $this->Add("DIV", "");
  56       $this->Add("DL", "");
  57       $this->Add("DT", "");
  58       $this->Add("EM", "");
  59       $this->Add("FONT", "");
  60       $this->Add("FORM", "");
  61       $this->Add("H1", "");
  62       $this->Add("H2", "");
  63       $this->Add("H3", "");
  64       $this->Add("H4", "");
  65       $this->Add("H5", "");
  66       $this->Add("H6", "");
  67       $this->Add("HEAD", "");
  68       $this->Add("HR", "");
  69       $this->Add("HTML", "");
  70       $this->Add("IMG", "");
  71       $this->Add("INPUT", "");
  72       $this->Add("ISINDEX", "");
  73       $this->Add("I", "font-style: italic;");
  74       $this->Add("KBD", "");
  75       $this->Add("LINK", "");
  76       $this->Add("LI", "");
  77       $this->Add("MAP", "");
  78       $this->Add("MENU", "");
  79       $this->Add("META", "");
  80       $this->Add("OL", "");
  81       $this->Add("OPTION", "");
  82       $this->Add("PARAM", "");
  83       $this->Add("PRE", "");
  84       $this->Add("P", "");
  85       $this->Add("SAMP", "");
  86       $this->Add("SCRIPT", "");
  87       $this->Add("SELECT", "");
  88       $this->Add("SMALL", "");
  89       $this->Add("STRIKE", "");
  90       $this->Add("STRONG", "");
  91       $this->Add("STYLE", "");
  92       $this->Add("SUB", "");
  93       $this->Add("SUP", "");
  94       $this->Add("TABLE", "");
  95       $this->Add("TD", "");
  96       $this->Add("TEXTAREA", "");
  97       $this->Add("TH", "");
  98       $this->Add("TITLE", "");
  99       $this->Add("TR", "");
 100       $this->Add("TT", "");
 101       $this->Add("UL", "");
 102       $this->Add("U", "text-decoration : underline;");
 103       $this->Add("VAR", "");
 104     }
 105   }
 106
 107   function SetHTML($html) {
 108     $this->html = ($html != false);
 109   }
 110
 111   function Add($key, $codestr) {
 112     $key = strtolower($key);
 113     $codestr = strtolower($codestr);
 114     if(!isset($this->css[$key])) {
 115       $this->css[$key] = array();
 116     }
 117     $codes = explode(";",$codestr);
 118     if(count($codes) > 0) {
 119       $codekey=''; $codevalue='';
 120       foreach($codes as $code) {
 121         $code = trim($code);
 122         $this->assignValues(explode(":",$code),$codekey,$codevalue);
 123         if(strlen($codekey) > 0) {
 124           $this->css[$key][trim($codekey)] = trim($codevalue);
 125         }
 126       }
 127     }
 128   }
 129
 130   private function assignValues($arr,&$val1,&$val2) {
 131       $n = count($arr);
 132       if ($n > 0) {
 133           $val1=$arr[0];
 134           $val2=($n > 1) ? $arr[1] : '';
 135       }
 136   }
 137   function Get($key, $property) {
 138     $key = strtolower($key);
 139     $property = strtolower($property);
 140     $tag='';$subtag='';$class='';$id='';
 141     $this->assignValues(explode(":",$key),$tag,$subtag);
 142     $this->assignValues(explode(".",$tag),$tag,$class);
 143     $this->assignValues(explode("#",$tag),$tag,$id);
 144     $result = "";
 145     $_subtag=''; $_class=''; $_id='';
 146     foreach($this->css as $_tag => $value) {
 147       $this->assignValues(explode(":",$_tag),$_tag,$_subtag);
 148       $this->assignValues(explode(".",$_tag),$_tag,$_class);
 149       $this->assignValues(explode("#",$_tag),$_tag,$_id);
 150
 151       $tagmatch = (strcmp($tag, $_tag) == 0) | (strlen($_tag) == 0);
 152       $subtagmatch = (strcmp($subtag, $_subtag) == 0) | (strlen($_subtag) == 0);
 153       $classmatch = (strcmp($class, $_class) == 0) | (strlen($_class) == 0);
 154       $idmatch = (strcmp($id, $_id) == 0);
 155
 156       if($tagmatch & $subtagmatch & $classmatch & $idmatch) {
 157         $temp = $_tag;
 158         if((strlen($temp) > 0) & (strlen($_class) > 0)) {
 159           $temp .= ".".$_class;
 160         } elseif(strlen($temp) == 0) {
 161           $temp = ".".$_class;
 162         }
 163         if((strlen($temp) > 0) & (strlen($_subtag) > 0)) {
 164           $temp .= ":".$_subtag;
 165         } elseif(strlen($temp) == 0) {
 166           $temp = ":".$_subtag;
 167         }
 168         if(isset($this->css[$temp][$property])) {
 169           $result = $this->css[$temp][$property];
 170         }
 171       }
 172     }
 173     return $result;
 174   }
 175
 176   function GetSection($key) {
 177     $key = strtolower($key);
 178     $tag='';$subtag='';$class='';$id='';
 179     $_subtag=''; $_class=''; $_id='';
 180
 181     $this->assignValues(explode(":",$key),$tag,$subtag);
 182     $this->assignValues(explode(".",$tag),$tag,$class);
 183     $this->assignValues(explode("#",$tag),$tag,$id);
 184     $result = array();
 185     foreach($this->css as $_tag => $value) {
 186       $this->assignValues(explode(":",$_tag),$_tag,$_subtag);
 187       $this->assignValues(explode(".",$_tag),$_tag,$_class);
 188       $this->assignValues(explode("#",$_tag),$_tag,$_id);
 189
 190       $tagmatch = (strcmp($tag, $_tag) == 0) | (strlen($_tag) == 0);
 191       $subtagmatch = (strcmp($subtag, $_subtag) == 0) | (strlen($_subtag) == 0);
 192       $classmatch = (strcmp($class, $_class) == 0) | (strlen($_class) == 0);
 193       $idmatch = (strcmp($id, $_id) == 0);
 194
 195       if($tagmatch & $subtagmatch & $classmatch & $idmatch) {
 196         $temp = $_tag;
 197         if((strlen($temp) > 0) & (strlen($_class) > 0)) {
 198           $temp .= ".".$_class;
 199         } elseif(strlen($temp) == 0) {
 200           $temp = ".".$_class;
 201         }
 202         if((strlen($temp) > 0) & (strlen($_subtag) > 0)) {
 203           $temp .= ":".$_subtag;
 204         } elseif(strlen($temp) == 0) {
 205           $temp = ":".$_subtag;
 206         }
 207         foreach($this->css[$temp] as $property => $value) {
 208           $result[$property] = $value;
 209         }
 210       }
 211     }
 212     return $result;
 213   }
 214
 215   function ParseStr($str) {
 216     $this->Clear();
 217     // Remove comments
 218     $str = preg_replace("/\/\*(.*)?\*\//Usi", "", $str);
 219     // Parse this damn csscode
 220     $parts = explode("}",$str);
 221     if(count($parts) > 0) {
 222       foreach($parts as $part) {
 223         $keystr='';$codestr='';
 224         $this->assignValues(explode("{",$part),$keystr,$codestr);
 225         $keys = explode(",",trim($keystr));
 226         if(count($keys) > 0) {
 227           foreach($keys as $key) {
 228             if(strlen($key) > 0) {
 229               $key = str_replace("\n", "", $key);
 230               $key = str_replace("\\", "", $key);
 231               $this->Add($key, trim($codestr));
 232             }
 233           }
 234         }
 235       }
 236     }
 237     //
 238     return (count($this->css) > 0);
 239   }
 240
 241   function Parse($filename) {
 242     $this->Clear();
 243     if(file_exists($filename)) {
 244       return $this->ParseStr(file_get_contents($filename));
 245     } else {
 246       return false;
 247     }
 248   }
 249
 250   function GetCSS() {
 251     $result = "";
 252     foreach($this->css as $key => $values) {
 253       $result .= $key." {\n";
 254       foreach($values as $key => $value) {
 255         $result .= "  $key: $value;\n";
 256       }
 257       $result .= "}\n\n";
 258     }
 259     return $result;
 260   }
 261 }