lib/RSSWriter091.php

   1 <?php
   2 // ----------------------------------------------------------------------
   3 // phpWiki
   4 // ----------------------------------------------------------------------
   5 // LICENSE
   6 //
   7 // This program is free software; you can redistribute it and/or
   8 // modify it under the terms of the GNU General Public License (GPL)
   9 // as published by the Free Software Foundation; either version 2
  10 // of the License, or (at your option) any later version.
  11 //
  12 // This program is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // To read the license please visit http://www.gnu.org/copyleft/gpl.html
  18 // ----------------------------------------------------------------------
  19 // Original Author of file: Lawrence Akka
  20 // Purpose of file: Plugin and associated classes
  21 // for outputting RecentChanges in RSS 0.91 format
  22 // ----------------------------------------------------------------------
  23
  24 // $Id$
  25
  26 include_once("lib/RssWriter.php");
  27 class RSSWriter091 extends RSSWriter
  28 {
  29     function RSSWriter091()
  30     {
  31         $this->XmlElement('rss', array('version' => "0.91"));
  32         $this->_items = array();
  33     }
  34   /**
  35    * Finish construction of RSS.
  36    */
  37     function finish()
  38     {
  39         if (isset($this->_finished))
  40             return;
  41
  42         $channel = &$this->_channel;
  43         $items = &$this->_items;
  44
  45         if ($items)
  46             {
  47         foreach ($items as $i)
  48                     $channel->pushContent($i);
  49             }
  50         $this->pushContent($channel);
  51         $this->__spew();
  52         $this->_finished = true;
  53     }
  54
  55     /**
  56      * Create a new RDF <em>typedNode</em>.
  57      */
  58     function __node($type, $properties, $uri = false) {
  59     return new XmlElement($type, '',
  60                               $this->__elementize($properties));
  61     }
  62
  63     /**
  64      * Write output to HTTP client.
  65      */
  66     function __spew() {
  67         header("Content-Type: application/xml; charset=" . RSS_ENCODING);
  68         printf("<?xml version=\"1.0\" encoding=\"%s\"?>\n", RSS_ENCODING);
  69         print("<!DOCTYPE rss PUBLIC \"-//Netscape Communications//DTD RSS 0.91//EN\"\n");
  70         print("\"http://my.netscape.com/publish/formats/rss-0.91.dtd\">\n\n");
  71         $this->printXML();
  72     }
  73
  74 }
  75
  76 class _RecentChanges_RssFormatter091
  77 extends _RecentChanges_RSSFormatter
  78 // This class should probably go at then of RecentChanges.php
  79 {
  80     function format ($changes)
  81     {
  82         //    include_once('lib/RssWriter.php');
  83         $rss = new RssWriter091;
  84
  85         $rss->channel($this->channel_properties());
  86
  87         if (($props = $this->image_properties()))
  88             $rss->image($props);
  89         if (($props = $this->textinput_properties()))
  90             $rss->textinput($props);
  91
  92         while ($rev = $changes->next()) {
  93             $rss->addItem($this->item_properties($rev),
  94                           $this->pageURI($rev));
  95         }
  96
  97         global $request;
  98         $request->discardOutput();
  99         $rss->finish();
 100         $request->finish();             // NORETURN!!!!
 101     }
 102
 103     function channel_properties ()
 104     {
 105         global $request;
 106
 107         $rc_url = WikiURL($request->getArg('pagename'), false, 'absurl');
 108
 109         return array('title' => WIKI_NAME,
 110                      'description' => _("RecentChanges"),
 111                      'link' => $rc_url,
 112                      'language' => 'en-US');
 113
 114         /* FIXME: language should come from $LANG (or other config variable). */
 115
 116         /* FIXME: other things one might like in <channel>:
 117          * managingEditor
 118          * webmaster
 119          * lastBuildDate
 120          * copyright
 121          */
 122     }
 123
 124     function item_properties ($rev)
 125     {
 126         $page = $rev->getPage();
 127         $pagename = $page->getName();
 128
 129         return array( 'title'        => SplitPagename($pagename),
 130                       'description'    => $this->summary($rev),
 131                       'link'        => $this->pageURL($rev)
 132                       );
 133     }
 134 }
 135
 136 // Local Variables:
 137 // mode: php
 138 // tab-width: 8
 139 // c-basic-offset: 4
 140 // c-hanging-comment-ender-p: nil
 141 // indent-tabs-mode: nil
 142 // End:
 143 ?>