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 include_once 'lib/RssWriter.php';
  25 class RSSWriter091 extends RSSWriter
  26 {
  27     function RSSWriter091()
  28     {
  29         $this->XmlElement('rss', array('version' => "0.91"));
  30         $this->_items = array();
  31     }
  32   /**
  33    * Finish construction of RSS.
  34    */
  35     function finish()
  36     {
  37         if (isset($this->_finished))
  38             return;
  39
  40         $channel = &$this->_channel;
  41         $items = &$this->_items;
  42
  43         if ($items)
  44             {
  45         foreach ($items as $i)
  46                     $channel->pushContent($i);
  47             }
  48         $this->pushContent($channel);
  49         $this->__spew();
  50         $this->_finished = true;
  51     }
  52
  53     /**
  54      * Create a new RDF <em>typedNode</em>.
  55      */
  56     function __node($type, $properties, $uri = false) {
  57     return new XmlElement($type, '',
  58                               $this->__elementize($properties));
  59     }
  60
  61     /**
  62      * Write output to HTTP client.
  63      */
  64     function __spew() {
  65         header("Content-Type: application/xml; charset=" . RSS_ENCODING);
  66         printf("<?xml version=\"1.0\" encoding=\"%s\"?>\n", RSS_ENCODING);
  67         print("<!DOCTYPE rss PUBLIC \"-//Netscape Communications//DTD RSS 0.91//EN\"\n");
  68         print("\"http://my.netscape.com/publish/formats/rss-0.91.dtd\">\n\n");
  69         $this->printXML();
  70     }
  71
  72 }
  73
  74 class _RecentChanges_RssFormatter091
  75 extends _RecentChanges_RSSFormatter
  76 // This class should probably go at then of RecentChanges.php
  77 {
  78     function format ($changes)
  79     {
  80         //    include_once('lib/RssWriter.php');
  81         $rss = new RssWriter091;
  82
  83         $rss->channel($this->channel_properties());
  84
  85         if (($props = $this->image_properties()))
  86             $rss->image($props);
  87         if (($props = $this->textinput_properties()))
  88             $rss->textinput($props);
  89
  90         while ($rev = $changes->next()) {
  91             $rss->addItem($this->item_properties($rev),
  92                           $this->pageURI($rev));
  93         }
  94
  95         global $request;
  96         $request->discardOutput();
  97         $rss->finish();
  98         $request->finish();             // NORETURN!!!!
  99     }
 100
 101     function channel_properties ()
 102     {
 103         global $request;
 104
 105         $rc_url = WikiURL($request->getArg('pagename'), false, 'absurl');
 106
 107         return array('title' => WIKI_NAME,
 108                      'description' => _("RecentChanges"),
 109                      'link' => $rc_url,
 110                      'language' => 'en-US');
 111
 112         /* FIXME: language should come from $LANG (or other config variable). */
 113
 114         /* FIXME: other things one might like in <channel>:
 115          * managingEditor
 116          * webmaster
 117          * lastBuildDate
 118          * copyright
 119          */
 120     }
 121
 122     function item_properties ($rev)
 123     {
 124         $page = $rev->getPage();
 125         $pagename = $page->getName();
 126
 127         return array( 'title'        => SplitPagename($pagename),
 128                       'description'    => $this->summary($rev),
 129                       'link'        => $this->pageURL($rev)
 130                       );
 131     }
 132 }
 133
 134 // Local Variables:
 135 // mode: php
 136 // tab-width: 8
 137 // c-basic-offset: 4
 138 // c-hanging-comment-ender-p: nil
 139 // indent-tabs-mode: nil
 140 // End: