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vendor/ezyang/htmlpurifier/library/HTMLPurifier/Injector/PurifierLinkify.php 1.77 KB
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  <?php
  
  /**
   * Injector that converts configuration directive syntax %Namespace.Directive
   * to links
   */
  class HTMLPurifier_Injector_PurifierLinkify extends HTMLPurifier_Injector
  {
      /**
       * @type string
       */
      public $name = 'PurifierLinkify';
  
      /**
       * @type string
       */
      public $docURL;
  
      /**
       * @type array
       */
      public $needed = array('a' => array('href'));
  
      /**
       * @param HTMLPurifier_Config $config
       * @param HTMLPurifier_Context $context
       * @return string
       */
      public function prepare($config, $context)
      {
          $this->docURL = $config->get('AutoFormat.PurifierLinkify.DocURL');
          return parent::prepare($config, $context);
      }
  
      /**
       * @param HTMLPurifier_Token $token
       */
      public function handleText(&$token)
      {
          if (!$this->allowsElement('a')) {
              return;
          }
          if (strpos($token->data, '%') === false) {
              return;
          }
  
          $bits = preg_split('#%([a-z0-9]+\.[a-z0-9]+)#Si', $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' => str_replace('%s', $bits[$i], $this->docURL))
                  );
                  $token[] = new HTMLPurifier_Token_Text('%' . $bits[$i]);
                  $token[] = new HTMLPurifier_Token_End('a');
              }
          }
      }
  }
  
  // vim: et sw=4 sts=4