xref: /dokuwiki/feed.php (revision 15fae1076f4439c7cd1302494a48e24f707a3020) 
1<?php
2/**
3 * XML feed export
4 *
5 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
6 * @author     Andreas Gohr <andi@splitbrain.org>
7 */
8
9  ini_set('short_open_tag',"1");
10  require_once("inc/common.php");
11  require_once("inc/parser.php");
12  require_once("inc/feedcreator.class.php");
13  require_once("inc/auth.php");
14
15  //set auth header for login
16  if($_REQUEST['login'] && !isset($_SERVER['PHP_AUTH_USER'])){
17    header('WWW-Authenticate: Basic realm="'.$conf['title'].'"');
18    header('HTTP/1.0 401 Unauthorized');
19    auth_logoff();
20  }
21
22
23  $num  = $_REQUEST['num'];
24  $type = $_REQUEST['type'];
25  $mode = $_REQUEST['mode'];
26  $ns   = $_REQUEST['ns'];
27
28  switch ($type){
29    case 'rss':
30       $type = 'RSS0.9';
31       break;
32    case 'rss2':
33       $type = 'RSS2.0';
34       break;
35    case 'atom':
36       $type = 'ATOM0.3';
37       break;
38    default:
39       $type = 'RSS1.0';
40  }
41
42  //some defaults for the feed
43  $CACHEGROUP = 'feed';
44  $conf['typography'] = false;
45  $conf['canonical']  = true;
46  $parser['toc']      = false;
47
48  $rss = new UniversalFeedCreator();
49  $rss = new DokuWikiFeedCreator();
50  $rss->title = $conf['title'];
51  $rss->link  = wl();
52  $rss->syndicationURL = getBaseURL().'/feed.php';
53  $rss->cssStyleSheet = getBaseURL().'/feed.css';
54
55  if($mode == 'list'){
56    rssListNamespace($rss,$ns);
57  }else{
58    rssRecentChanges($rss,$num);
59  }
60
61  header('Content-Type: application/xml; charset='.$lang['encoding']);
62  print $rss->createFeed($type,$lang['encoding']);
63
64// ---------------------------------------------------------------- //
65
66/**
67 * Add recent changed to a feed object
68 *
69 * @author Andreas Gohr <andi@splitbrain.org>
70 */
71function rssRecentChanges(&$rss,$num){
72  $recents = getRecents($num);
73  foreach(array_keys($recents) as $id){
74    $desc = cleanDesc(parsedWiki($id));
75    if(!empty($recents[$id]['sum'])){
76      $desc = '['.strip_tags($recents[$id]['sum']).'] '.$desc;
77    }
78    $item = new FeedItem();
79    $item->title       = $id;
80    $item->link        = wl($id,'rev='.$recents[$id]['date']);
81    $item->description = $desc;
82    $item->date        = date('r',$recents[$id]['date']);
83    if(strpos($id,':')!==false){
84      $item->category    = substr($id,0,strrpos($id,':'));
85    }
86    if($recents[$id]['user']){
87      $item->author = $recents[$id]['user'].'@';
88    }else{
89      $item->author = 'anonymous@';
90    }
91    $item->author  .= $recents[$id]['ip'];
92
93    $rss->addItem($item);
94  }
95}
96
97/**
98 * Add all pages of a namespace to a feedobject
99 *
100 * @author Andreas Gohr <andi@splitbrain.org>
101 */
102function rssListNamespace(&$rss,$ns){
103  require_once("inc/search.php");
104  global $conf;
105
106  $ns=':'.cleanID($ns);
107  $ns=str_replace(':','/',$ns);
108
109  $data = array();
110  sort($data);
111  search($data,$conf['datadir'],'search_list','',$ns);
112  foreach($data as $row){
113    $id = $row['id'];
114    $date = filemtime(wikiFN($id));
115    $desc = cleanDesc(parsedWiki($id));
116    $item = new FeedItem();
117    $item->title       = $id;
118    $item->link        = wl($id,'rev='.$date);
119    $item->description = $desc;
120    $item->date        = date('r',$date);
121    $rss->addItem($item);
122  }
123}
124
125/**
126 * Clean description for feed inclusion
127 *
128 * Removes HTML tags and line breaks and trims the text to
129 * 250 chars
130 *
131 * @author Andreas Gohr <andi@splitbrain.org>
132 */
133function cleanDesc($desc){
134  //remove TOC
135  $desc = strip_tags($desc);
136  $desc = preg_replace('/[\n\r\t]/',' ',$desc);
137  $desc = preg_replace('/  /',' ',$desc);
138  $desc = substr($desc,0,250);
139  $desc = $desc.'...';
140  return $desc;
141}
142
143?>
144