library/HTMLPurifier/Injector/PurifierLinkify.php

   1 <?php
   2
   3 /**
   4  * Injector that converts configuration directive syntax %Namespace.Directive
   5  * to links
   6  */
   7 class HTMLPurifier_Injector_PurifierLinkify extends HTMLPurifier_Injector
   8 {
   9
  10     public $name = 'PurifierLinkify';
  11     public $docURL;
  12     public $needed = array('a' => array('href'));
  13
  14     public function prepare($config, $context) {
  15         $this->docURL = $config->get('AutoFormatParam', 'PurifierLinkifyDocURL');
  16         return parent::prepare($config, $context);
  17     }
  18
  19     public function handleText(&$token) {
  20         if (!$this->allowsElement('a')) return;
  21         if (strpos($token->data, '%') === false) return;
  22
  23         $bits = preg_split('#%([a-z0-9]+\.[a-z0-9]+)#Si', $token->data, -1, PREG_SPLIT_DELIM_CAPTURE);
  24         $token = array();
  25
  26         // $i = index
  27         // $c = count
  28         // $l = is link
  29         for ($i = 0, $c = count($bits), $l = false; $i < $c; $i++, $l = !$l) {
  30             if (!$l) {
  31                 if ($bits[$i] === '') continue;
  32                 $token[] = new HTMLPurifier_Token_Text($bits[$i]);
  33             } else {
  34                 $token[] = new HTMLPurifier_Token_Start('a',
  35                     array('href' => str_replace('%s', $bits[$i], $this->docURL)));
  36                 $token[] = new HTMLPurifier_Token_Text('%' . $bits[$i]);
  37                 $token[] = new HTMLPurifier_Token_End('a');
  38             }
  39         }
  40
  41     }
  42
  43 }
  44
  45 // vim: et sw=4 sts=4