library/HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php

   1 <?php
   2
   3 /**
   4  * Injector that removes spans with no attributes
   5  */
   6 class HTMLPurifier_Injector_RemoveSpansWithoutAttributes extends HTMLPurifier_Injector
   7 {
   8     /**
   9      * @type string
  10      */
  11     public $name = 'RemoveSpansWithoutAttributes';
  12
  13     /**
  14      * @type array
  15      */
  16     public $needed = array('span');
  17
  18     /**
  19      * @type HTMLPurifier_AttrValidator
  20      */
  21     private $attrValidator;
  22
  23     /**
  24      * Used by AttrValidator.
  25      * @type HTMLPurifier_Config
  26      */
  27     private $config;
  28
  29     /**
  30      * @type HTMLPurifier_Context
  31      */
  32     private $context;
  33
  34     public function prepare($config, $context)
  35     {
  36         $this->attrValidator = new HTMLPurifier_AttrValidator();
  37         $this->config = $config;
  38         $this->context = $context;
  39         return parent::prepare($config, $context);
  40     }
  41
  42     /**
  43      * @param HTMLPurifier_Token $token
  44      */
  45     public function handleElement(&$token)
  46     {
  47         if ($token->name !== 'span' || !$token instanceof HTMLPurifier_Token_Start) {
  48             return;
  49         }
  50
  51         // We need to validate the attributes now since this doesn't normally
  52         // happen until after MakeWellFormed. If all the attributes are removed
  53         // the span needs to be removed too.
  54         $this->attrValidator->validateToken($token, $this->config, $this->context);
  55         $token->armor['ValidateAttributes'] = true;
  56
  57         if (!empty($token->attr)) {
  58             return;
  59         }
  60
  61         $nesting = 0;
  62         while ($this->forwardUntilEndToken($i, $current, $nesting)) {
  63         }
  64
  65         if ($current instanceof HTMLPurifier_Token_End && $current->name === 'span') {
  66             // Mark closing span tag for deletion
  67             $current->markForDeletion = true;
  68             // Delete open span tag
  69             $token = false;
  70         }
  71     }
  72
  73     /**
  74      * @param HTMLPurifier_Token $token
  75      */
  76     public function handleEnd(&$token)
  77     {
  78         if ($token->markForDeletion) {
  79             $token = false;
  80         }
  81     }
  82 }
  83
  84 // vim: et sw=4 sts=4