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     /**
  12      * @param array $attr
  13      * @param HTMLPurifier_Config $config
  14      * @param HTMLPurifier_Context $context
  15      * @return array
  16      */
  17     public function transform($attr, $config, $context)
  18     {
  19         $lang = isset($attr['lang']) ? $attr['lang'] : false;
  20         $xml_lang = isset($attr['xml:lang']) ? $attr['xml:lang'] : false;
  21
  22         if ($lang !== false && $xml_lang === false) {
  23             $attr['xml:lang'] = $lang;
  24         } elseif ($xml_lang !== false) {
  25             $attr['lang'] = $xml_lang;
  26         }
  27         return $attr;
  28     }
  29 }
  30
  31 // vim: et sw=4 sts=4