library/HTMLPurifier/AttrTransform/Lang.php

   1 <?php
   2
   3 /**
   4  * Post-transform that copies lang's value to xml:lang (and vice-versa)
   5  * @note Theoretically speaking, this could be a pre-transform, but putting
   6  *       post is more efficient.
   7  */
   8 class HTMLPurifier_AttrTransform_Lang extends HTMLPurifier_AttrTransform
   9 {
  10
  11     public function transform($attr, $config, $context) {
  12
  13         $lang     = isset($attr['lang']) ? $attr['lang'] : false;
  14         $xml_lang = isset($attr['xml:lang']) ? $attr['xml:lang'] : false;
  15
  16         if ($lang !== false && $xml_lang === false) {
  17             $attr['xml:lang'] = $lang;
  18         } elseif ($xml_lang !== false) {
  19             $attr['lang'] = $xml_lang;
  20         }
  21
  22         return $attr;
  23
  24     }
  25
  26 }
  27
  28 // vim: et sw=4 sts=4