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   1  <?php
   2  /**
   3   * @version        $Id: atom.php 15105 2010-02-27 14:59:11Z ian $
   4   * @package        Joomla.Framework
   5   * @subpackage    Document
   6   * @copyright    Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
   7   * @license        GNU/GPL, see LICENSE.php
   8   * Joomla! is free software. This version may have been modified pursuant
   9   * to the GNU General Public License, and as distributed it includes or
  10   * is derivative of works licensed under the GNU General Public License or
  11   * other free or open source software licenses.
  12   * See COPYRIGHT.php for copyright notices and details.
  13   */
  14  
  15  // Check to ensure this file is within the rest of the framework
  16  defined('JPATH_BASE') or die();
  17  
  18  
  19  
  20  /**
  21   * JDocumentRenderer_Atom is a feed that implements the atom specification
  22   *
  23   * Please note that just by using this class you won't automatically
  24   * produce valid atom files. For example, you have to specify either an editor
  25   * for the feed or an author for every single feed item.
  26   *
  27   * @package     Joomla.Framework
  28   * @subpackage    Document
  29   * @see http://www.atomenabled.org/developers/syndication/atom-format-spec.php
  30   * @since    1.5
  31   */
  32  
  33   class JDocumentRendererAtom extends JDocumentRenderer
  34   {
  35      /**
  36       * Document mime type
  37       *
  38       * @var        string
  39       * @access    private
  40       */
  41       var $_mime = "application/atom+xml";
  42  
  43      /**
  44       * Render the feed
  45       *
  46       * @access public
  47       * @return string
  48       */
  49  	function render()
  50      {
  51          $now    =& JFactory::getDate();
  52          $data    =& $this->_doc;
  53  
  54          $uri =& JFactory::getURI();
  55          $url = $uri->toString(array('scheme', 'user', 'pass', 'host', 'port'));
  56          $syndicationURL =& JRoute::_('&format=feed&type=atom');
  57  
  58          $feed = "<feed xmlns=\"http://www.w3.org/2005/Atom\" ";
  59          if ($data->language!="") {
  60              $feed.= " xml:lang=\"".$data->language."\"";
  61          }
  62          $feed.= ">\n";
  63          $feed.= "    <title type=\"text\">".htmlspecialchars($data->title, ENT_COMPAT, 'UTF-8')."</title>\n";
  64          $feed.= "    <subtitle type=\"text\">".htmlspecialchars($data->description, ENT_COMPAT, 'UTF-8')."</subtitle>\n";
  65          $feed.= "    <link rel=\"alternate\" type=\"text/html\" href=\"".$url."\"/>\n";
  66          $feed.= "    <id>".str_replace(' ','%20',$data->getBase())."</id>\n";
  67          $feed.= "    <updated>".htmlspecialchars($now->toISO8601(), ENT_COMPAT, 'UTF-8')."</updated>\n";
  68          if ($data->editor!="") {
  69              $feed.= "    <author>\n";
  70              $feed.= "        <name>".$data->editor."</name>\n";
  71              if ($data->editorEmail!="") {
  72                  $feed.= "        <email>".htmlspecialchars($data->editorEmail, ENT_COMPAT, 'UTF-8')."</email>\n";
  73              }
  74              $feed.= "    </author>\n";
  75          }
  76          $feed.= "    <generator uri=\"http://joomla.org\" version=\"1.5\">".$data->getGenerator()."</generator>\n";
  77          $feed.= '<link rel="self" type="application/atom+xml" href="'.str_replace(' ','%20',$url.$syndicationURL). "\" />\n";
  78  
  79          for ($i=0;$i<count($data->items);$i++)
  80          {
  81              $feed.= "    <entry>\n";
  82              $feed.= "        <title>".htmlspecialchars(strip_tags($data->items[$i]->title), ENT_COMPAT, 'UTF-8')."</title>\n";
  83              $feed.= '        <link rel="alternate" type="text/html" href="'.$url.$data->items[$i]->link."\"/>\n";
  84  
  85              if ($data->items[$i]->date=="") {
  86                  $data->items[$i]->date = $now->toUnix();
  87              }
  88              $itemDate =& JFactory::getDate($data->items[$i]->date);
  89              $feed.= "        <published>".htmlspecialchars($itemDate->toISO8601(), ENT_COMPAT, 'UTF-8')."</published>\n";
  90              $feed.= "        <updated>".htmlspecialchars($itemDate->toISO8601(),ENT_COMPAT, 'UTF-8')."</updated>\n";
  91              $feed.= "        <id>".str_replace(' ', '%20', $url.$data->items[$i]->link)."</id>\n";
  92  
  93              if ($data->items[$i]->author!="")
  94              {
  95                  $feed.= "        <author>\n";
  96                  $feed.= "            <name>".htmlspecialchars($data->items[$i]->author, ENT_COMPAT, 'UTF-8')."</name>\n";
  97                  if ($data->items[$i]->authorEmail!="") {
  98                      $feed.= "        <email>".htmlspecialchars($data->items[$i]->authorEmail, ENT_COMPAT, 'UTF-8')."</email>\n";
  99                  }
 100                  $feed.= "        </author>\n";
 101              }
 102              if ($data->items[$i]->description!="") {
 103                  $feed.= "        <summary type=\"html\">".htmlspecialchars($this->_relToAbs($data->items[$i]->description))."</summary>\n";
 104                  $feed.= "        <content type=\"html\">".htmlspecialchars($this->_relToAbs($data->items[$i]->description))."</content>\n";
 105              }
 106              if ($data->items[$i]->enclosure != NULL) {
 107              $feed.="        <link rel=\"enclosure\" href=\"". $data->items[$i]->enclosure->url ."\" type=\"". $data->items[$i]->enclosure->type."\"  length=\"". $data->items[$i]->enclosure->length . "\" />\n";
 108              }
 109              $feed.= "    </entry>\n";
 110          }
 111          $feed.= "</feed>\n";
 112          return $feed;
 113      }
 114  
 115  	function _relToAbs($text)
 116      {
 117          $base = JURI::base();
 118            $text = preg_replace("/(href|src)=\"(?!http|ftp|https|mailto)([^\"]*)\"/", "$1=\"$base\$2\"", $text);
 119  
 120          return $text;
 121      }
 122  }