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     public $name = 'RemoveSpansWithoutAttributes';
   9     public $needed = array('span');
  10
  11     private $attrValidator;
  12
  13     /**
  14      * Used by AttrValidator
  15      */
  16     private $config;
  17     private $context;
  18
  19     public function prepare($config, $context) {
  20         $this->attrValidator = new HTMLPurifier_AttrValidator();
  21         $this->config = $config;
  22         $this->context = $context;
  23         return parent::prepare($config, $context);
  24     }
  25
  26     public function handleElement(&$token) {
  27         if ($token->name !== 'span' || !$token instanceof HTMLPurifier_Token_Start) {
  28             return;
  29         }
  30
  31         // We need to validate the attributes now since this doesn't normally
  32         // happen until after MakeWellFormed. If all the attributes are removed
  33         // the span needs to be removed too.
  34         $this->attrValidator->validateToken($token, $this->config, $this->context);
  35         $token->armor['ValidateAttributes'] = true;
  36
  37         if (!empty($token->attr)) {
  38             return;
  39         }
  40
  41         $nesting = 0;
  42         $spanContentTokens = array();
  43         while ($this->forwardUntilEndToken($i, $current, $nesting)) {}
  44
  45         if ($current instanceof HTMLPurifier_Token_End && $current->name === 'span') {
  46             // Mark closing span tag for deletion
  47             $current->markForDeletion = true;
  48             // Delete open span tag
  49             $token = false;
  50         }
  51     }
  52
  53     public function handleEnd(&$token) {
  54         if ($token->markForDeletion) {
  55             $token = false;
  56         }
  57     }
  58 }
  59
  60 // vim: et sw=4 sts=4