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   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