library/HTMLPurifier/Injector/RemoveEmpty.php

   1 <?php
   2
   3 class HTMLPurifier_Injector_RemoveEmpty extends HTMLPurifier_Injector
   4 {
   5
   6     private $context, $config;
   7
   8     public function prepare($config, $context) {
   9         parent::prepare($config, $context);
  10         $this->config = $config;
  11         $this->context = $context;
  12         $this->attrValidator = new HTMLPurifier_AttrValidator();
  13     }
  14
  15     public function handleElement(&$token) {
  16         if (!$token instanceof HTMLPurifier_Token_Start) return;
  17         $next = false;
  18         for ($i = $this->inputIndex + 1, $c = count($this->inputTokens); $i < $c; $i++) {
  19             $next = $this->inputTokens[$i];
  20             if ($next instanceof HTMLPurifier_Token_Text && $next->is_whitespace) continue;
  21             break;
  22         }
  23         if (!$next || ($next instanceof HTMLPurifier_Token_End && $next->name == $token->name)) {
  24             if ($token->name == 'colgroup') return;
  25             $this->attrValidator->validateToken($token, $this->config, $this->context);
  26             $token->armor['ValidateAttributes'] = true;
  27             if (isset($token->attr['id']) || isset($token->attr['name'])) return;
  28             $token = $i - $this->inputIndex + 1;
  29             for ($b = $this->inputIndex - 1; $b > 0; $b--) {
  30                 $prev = $this->inputTokens[$b];
  31                 if ($prev instanceof HTMLPurifier_Token_Text && $prev->is_whitespace) continue;
  32                 break;
  33             }
  34             // This is safe because we removed the token that triggered this.
  35             $this->rewind($b - 1);
  36             return;
  37         }
  38     }
  39
  40 }
  41
  42 // vim: et sw=4 sts=4