lib/htmlpurifier/HTMLPurifier/AttrTransform/Lang.php

   1 <?php
   2
   3 require_once 'HTMLPurifier/AttrTransform.php';
   4
   5 /**
   6  * Post-transform that copies lang's value to xml:lang (and vice-versa)
   7  * @note Theoretically speaking, this could be a pre-transform, but putting
   8  *       post is more efficient.
   9  */
  10 class HTMLPurifier_AttrTransform_Lang extends HTMLPurifier_AttrTransform
  11 {
  12
  13     function transform($attr, $config, &$context) {
  14
  15         $lang     = isset($attr['lang']) ? $attr['lang'] : false;
  16         $xml_lang = isset($attr['xml:lang']) ? $attr['xml:lang'] : false;
  17
  18         if ($lang !== false && $xml_lang === false) {
  19             $attr['xml:lang'] = $lang;
  20         } elseif ($xml_lang !== false) {
  21             $attr['lang'] = $xml_lang;
  22         }
  23
  24         return $attr;
  25
  26     }
  27
  28 }
  29