File indexing completed on 2024-05-12 06:02:05

 <?php
 
 /**
  * Injector that converts http, https and ftp text URLs to actual links.
  */
 class HTMLPurifier_Injector_Linkify extends HTMLPurifier_Injector
 {
     /**
      * @type string
      */
     public $name = 'Linkify';
 
     /**
      * @type array
      */
     public $needed = array('a' => array('href'));
 
     /**
      * @param HTMLPurifier_Token $token
      */
     public function handleText(&$token)
     {
         if (!$this->allowsElement('a')) {
             return;
         }
 
         if (strpos($token->data, '://') === false) {
             // our really quick heuristic failed, abort
             // this may not work so well if we want to match things like
             // "google.com", but then again, most people don't
             return;
         }
 
         // there is/are URL(s). Let's split the string.
         // We use this regex:
         // https://gist.github.com/gruber/249502
         // but with @cscott's backtracking fix and also
         // the Unicode characters un-Unicodified.
         $bits = preg_split(
             '/\\b((?:[a-z][\\w\\-]+:(?:\\/{1,3}|[a-z0-9%])|www\\d{0,3}[.]|[a-z0-9.\\-]+[.][a-z]{2,4}\\/)(?:[^\\s()<>]|\\((?:[^\\s()<>]|(?:\\([^\\s()<>]+\\)))*\\))+(?:\\((?:[^\\s()<>]|(?:\\([^\\s()<>]+\\)))*\\)|[^\\s`!()\\[\\]{};:\'".,<>?\x{00ab}\x{00bb}\x{201c}\x{201d}\x{2018}\x{2019}]))/iu',
             $token->data, -1, PREG_SPLIT_DELIM_CAPTURE);
 
 
         $token = array();
 
         // $i = index
         // $c = count
         // $l = is link
         for ($i = 0, $c = count($bits), $l = false; $i < $c; $i++, $l = !$l) {
             if (!$l) {
                 if ($bits[$i] === '') {
                     continue;
                 }
                 $token[] = new HTMLPurifier_Token_Text($bits[$i]);
             } else {
                 $token[] = new HTMLPurifier_Token_Start('a', array('href' => $bits[$i]));
                 $token[] = new HTMLPurifier_Token_Text($bits[$i]);
                 $token[] = new HTMLPurifier_Token_End('a');
             }
         }
     }
 }
 
 // vim: et sw=4 sts=4