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<?php
/**
* XML feed export
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <andi@splitbrain.org>
*/
if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__)).'/');
require_once(DOKU_INC.'inc/init.php');
require_once(DOKU_INC.'inc/common.php');
require_once(DOKU_INC.'inc/parserutils.php');
require_once(DOKU_INC.'inc/feedcreator.class.php');
require_once(DOKU_INC.'inc/auth.php');
//close session
session_write_close();
$num = $_REQUEST['num'];
$type = $_REQUEST['type'];
$mode = $_REQUEST['mode'];
$ns = $_REQUEST['ns'];
$ltype = $_REQUEST['linkto'];
switch ($type){
case 'rss':
$type = 'RSS0.9';
break;
case 'rss2':
$type = 'RSS2.0';
break;
case 'atom':
$type = 'ATOM0.3';
break;
default:
$type = 'RSS1.0';
}
// the feed is dynamic - we need a cache for each combo
// (but most people just use the default feed so it's still effective)
$cache = getCacheName($num.$type.$mode.$ns.$ltype.$_SERVER['REMOTE_USER'],'.feed');
// check cacheage and deliver if nothing has changed since last
// time (with 5 minutes settletime)
$cmod = @filemtime($cache); // 0 if not exists
if($cmod && ($cmod+(5*60) >= @filemtime($conf['changelog']))){
header('Content-Type: application/xml; charset=utf-8');
print io_readFile($cache);
exit;
}
// create new feed
$rss = new DokuWikiFeedCreator();
$rss->title = $conf['title'];
$rss->link = DOKU_URL;
$rss->syndicationURL = DOKU_URL.'feed.php';
$rss->cssStyleSheet = DOKU_URL.'lib/styles/feed.css';
$image = new FeedImage();
$image->title = $conf['title'];
$image->url = DOKU_URL."lib/images/favicon.ico";
$image->link = DOKU_URL;
$rss->image = $image;
if($mode == 'list'){
rssListNamespace($rss,$ns);
}else{
rssRecentChanges($rss,$num,$ltype);
}
$feed = $rss->createFeed($type,'utf-8');
// save cachefile
io_saveFile($cache,$feed);
// finally deliver
header('Content-Type: application/xml; charset=utf-8');
print $feed;
// ---------------------------------------------------------------- //
/**
* Add recent changed to a feed object
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function rssRecentChanges(&$rss,$num,$ltype){
global $conf;
if(!$num) $num = $conf['recent'];
$recents = getRecents(0,$num);
//this can take some time if a lot of recaching has to be done
@set_time_limit(90); // set max execution time
foreach(array_keys($recents) as $id){
$desc = cleanDesc(p_wiki_xhtml($id,'',false));
$item = new FeedItem();
$item->title = $id;
if(!empty($recents[$id]['sum'])){
$item->title .= ' - '.strip_tags($recents[$id]['sum']);
}
switch ($ltype){
case 'page':
$item->link = wl($id,'rev='.$recents[$id]['date'],true);
break;
case 'rev':
$item->link = wl($id,'do=revisions&rev='.$recents[$id]['date'],true);
break;
default:
$item->link = wl($id,'do=diff&'.$recents[$id]['date'],true);
}
$item->description = $desc;
$item->date = date('r',$recents[$id]['date']);
if(strpos($id,':')!==false){
$item->category = substr($id,0,strrpos($id,':'));
}
if($recents[$id]['user']){
$item->author = $recents[$id]['user'].'@';
}else{
$item->author = 'anonymous@';
}
$item->author .= $recents[$id]['ip'];
$rss->addItem($item);
}
}
/**
* Add all pages of a namespace to a feedobject
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function rssListNamespace(&$rss,$ns){
require_once(DOKU_INC.'inc/search.php');
global $conf;
$ns=':'.cleanID($ns);
$ns=str_replace(':','/',$ns);
$data = array();
sort($data);
search($data,$conf['datadir'],'search_list','',$ns);
foreach($data as $row){
$id = $row['id'];
$date = filemtime(wikiFN($id));
$desc = cleanDesc(p_wiki_xhtml($id,'',false));
$item = new FeedItem();
$item->title = $id;
$item->link = wl($id,'rev='.$date,true);
$item->description = $desc;
$item->date = date('r',$date);
$rss->addItem($item);
}
}
/**
* Clean description for feed inclusion
*
* Removes HTML tags and line breaks and trims the text to
* 250 chars
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function cleanDesc($desc){
//remove TOC
$desc = preg_replace('!<div class="toc">.*?(</div>\n</div>)!s','',$desc);
$desc = strip_tags($desc);
$desc = preg_replace('/[\n\r\t]/',' ',$desc);
$desc = preg_replace('/ /',' ',$desc);
$desc = utf8_substr($desc,0,250);
$desc = $desc.'...';
return $desc;
}
?>
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