File indexing completed on 2024-12-22 05:36:18

 <?php
 
 /**
  * Validates shorthand CSS property list-style.
  * @warning Does not support url tokens that have internal spaces.
  */
 class HTMLPurifier_AttrDef_CSS_ListStyle extends HTMLPurifier_AttrDef
 {
 
     /**
      * Local copy of validators.
      * @type HTMLPurifier_AttrDef[]
      * @note See HTMLPurifier_AttrDef_CSS_Font::$info for a similar impl.
      */
     protected $info;
 
     /**
      * @param HTMLPurifier_Config $config
      */
     public function __construct($config)
     {
         $def = $config->getCSSDefinition();
         $this->info['list-style-type'] = $def->info['list-style-type'];
         $this->info['list-style-position'] = $def->info['list-style-position'];
         $this->info['list-style-image'] = $def->info['list-style-image'];
     }
 
     /**
      * @param string $string
      * @param HTMLPurifier_Config $config
      * @param HTMLPurifier_Context $context
      * @return bool|string
      */
     public function validate($string, $config, $context)
     {
         // regular pre-processing
         $string = $this->parseCDATA($string);
         if ($string === '') {
             return false;
         }
 
         // assumes URI doesn't have spaces in it
         $bits = explode(' ', strtolower($string)); // bits to process
 
         $caught = array();
         $caught['type'] = false;
         $caught['position'] = false;
         $caught['image'] = false;
 
         $i = 0; // number of catches
         $none = false;
 
         foreach ($bits as $bit) {
             if ($i >= 3) {
                 return;
             } // optimization bit
             if ($bit === '') {
                 continue;
             }
             foreach ($caught as $key => $status) {
                 if ($status !== false) {
                     continue;
                 }
                 $r = $this->info['list-style-' . $key]->validate($bit, $config, $context);
                 if ($r === false) {
                     continue;
                 }
                 if ($r === 'none') {
                     if ($none) {
                         continue;
                     } else {
                         $none = true;
                     }
                     if ($key == 'image') {
                         continue;
                     }
                 }
                 $caught[$key] = $r;
                 $i++;
                 break;
             }
         }
 
         if (!$i) {
             return false;
         }
 
         $ret = array();
 
         // construct type
         if ($caught['type']) {
             $ret[] = $caught['type'];
         }
 
         // construct image
         if ($caught['image']) {
             $ret[] = $caught['image'];
         }
 
         // construct position
         if ($caught['position']) {
             $ret[] = $caught['position'];
         }
 
         if (empty($ret)) {
             return false;
         }
         return implode(' ', $ret);
     }
 }
 
 // vim: et sw=4 sts=4