library/HTMLPurifier/ConfigSchema/Validator/Unique.php

   1 <?php
   2
   3 /**
   4  * Validates that this ID does not exist already in the interchange object.
   5  * @note
   6  *      Although this tests both possible values, in practice the ID
   7  *      will only be in one or the other. We do this to keep things simple.
   8  */
   9 class HTMLPurifier_ConfigSchema_Validator_Unique extends HTMLPurifier_ConfigSchema_Validator
  10 {
  11
  12     public function validate(&$arr, $interchange) {
  13         if (isset($interchange->namespaces[$arr['ID']])) {
  14             $this->error('Cannot redefine namespace');
  15         }
  16         if (isset($interchange->directives[$arr['ID']])) {
  17             $this->error('Cannot redefine directive');
  18         }
  19     }
  20
  21 }