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   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