Editing MediawikiExtensions/RSS (section)

=== Source ===

<pre><nowiki>
<?php
# RSS-Feed Mediawiki extension
# using magpieRSS (http://magpierss.sourceforge.net/)
# by mutante 25.03.2005

# requiring magpie (see above)
require_once('magpierss-0.71.1/rss_fetch.inc');

# give it a name
$wgExtensionFunctions[] = "wfRssExtension";

# register with global parser (http://meta.wikimedia.org/wiki/Write_your_own_MediaWiki_extension)
function wfRssExtension() {
global $wgParser;

# set hook (trigger) to rss, means <rss> will be made active tag
$wgParser->setHook( "rss", "renderRss" );
}

# the actual function (taking input)
function renderRss( $input ) {

# maybe its a good idea to escape string user input so they dont try to attach nasty things
# $input = mysql_escape_string($input);

# fetch the feed (magpie's job)
$rss = fetch_rss($input);

# setting variables for table head
$link=$rss->channel['link'];
$title=$rss->channel['title'];
$cdesc=$rss->channel['description'];

# putting the html table head into the output variable

$output="<table><tr><th align='left' colspan='3'><i>RSS-feed included from:</th></tr>
<th colspan='2'><a href='$link'>$title</a></th>
<th><i>'$cdesc'</i></th></tr><tr><th>Date</th>
<th>Page</th><th>Description</th></tr>";

# now a loop to add table rows until none more are found

foreach ($rss->items as $item) {

# setting variables for table row

$href = $item['link'];
$title = $item['title'];
$date = $rss->dc['date'];
$description = $item['description'];

# adding each single row (still in loop) (.= appends = would overwrite)

$output.="<tr><td>date $date</td><td colspan='1'><a href='$href'>$title</a></td><td>$description</td></tr>";
}

# loop done ,adding final tag to close table properly
$output.="</table>";

# dump the output all at once
return $output;

}

?>
</nowiki></pre>


==== Extended version by Duesentrieb ====

This is an extended version of the RSS-feed extension by mutante (http://meta.wikimedia.org/wiki/User:mutante/RSSFeed). It's main features are charset conversion, nicer formating and output of the full description text of the news items. It also introduces a syntax for controlling those features.

 <nowiki>
<?php
# RSS-Feed Mediawiki extension
# 
# original by mutante 25.03.2005
# extended by Duesentrieb 30.04.2005
#
# Requires: 
#  * magpie rss parser <http://magpierss.sourceforge.net/>
#  * iconv <http://www.gnu.org/software/libiconv/>, see also <http://www.php.net/iconv>
#
# Installation:
#  * put this file (rss.php) into the extension directory of your mediawiki installation 
#  * add the following to the end of LocalSettings.php: include("extensions/rss.php");
#  * make sure magpie can be found by PHP.
#
# Usage:
#  Use one section between <rss>-tags for each feed. The ress section may contain parameters
#  separated by a pipe ("|"), just like links and templates. Two parameters are supported:
#    * charset=...   the charset used by the feed. iconv is used to convert this.
#    * short         do not show the description text for each news item.
#
# Example: 
#    <rss>http://slashdot.org/slashdot.rss|charset=UTF-8|short</rss>
#


#change this according to your magpie installation!
require_once('magpierss-0.71.1/rss_fetch.inc'); 

#install extension hook
$wgExtensionFunctions[] = "wfRssExtension"; 

#extension hook callback function
function wfRssExtension() { 
   global $wgParser;
   
   #install parser hook for <rss> tags
   $wgParser->setHook( "rss", "renderRss" );
}
 
#parser hook callback function
function renderRss( $input ) {
   global $wgOutputEncoding;

   # $input = mysql_escape_string($input);
   
   if (!$input) return ""; #if <rss>-section is empty, return nothing
   
   #parse fields in rss-section
   $fields= explode("|",$input);
   $url= @$fields[0];
   
   $args= array();
   for ($i=1; $i<sizeof($fields); $i++) {
       $f= $fields[$i];
       
       if (strpos($f,"=")===False) $args[strtolower(trim($f))]= True;
       else {
               list($k,$v)= explode("=",$f,2);
               $args[strtolower(trim($k))]= trim($v);
       }
   }

   #get charset from argument-array    
   $charset= @$args["charset"];
   if (!$charset) $charset= $wgOutputEncoding;
   
   #get short-flag from argument-array
   #if short is set, no description text is printed
   $short= @$args["short"];
   
   
   #fetch rss. may be cached locally.
   #Refer to the documentation of magpie for details.
   $rss = @fetch_rss($url);
   
   
   #check for errors.
   if ($rss->ERROR) {
       return "<div>Failed to load RSS feed from $url: ".$rss->ERROR."</div>"; #localize...
   }
   
   if (!is_array($rss->items)) {
       return "<div>Failed to load RSS feed from $url!</div>"; #localize...
   }

   #Bild title line    
   $title= iconv($charset,$wgOutputEncoding,$rss->channel['title']);
   if ($rss->channel['link']) $title= "<a href='".$rss->channel['link']."'>$title</a>";
   
   $output="<h3>$title</h3>";
   
   #Bild items
   if ($short) { #short item list
       $output.="<ul>";
       foreach ($rss->items as $item) {
               $href = trim(iconv($charset,$wgOutputEncoding,$item['link']));
               $title = trim(iconv($charset,$wgOutputEncoding,$item['title']));
               
               $output.="<li><a href='$href'>$title</a></li>";
       }
       $output.="</ul>";
   }
   else { #full item list
       $output.="<dl>";
       foreach ($rss->items as $item) {
               $href = trim(iconv($charset,$wgOutputEncoding,$item['link']));
               $title = trim(iconv($charset,$wgOutputEncoding,$item['title']));
               
               #bild description text if desired
               if ($item["description"]) {
                       $text= trim(iconv($charset,$wgOutputEncoding,$item['description']));
                       
                       #avoid pre-tags
                       $text= str_replace("\r"," ",$text);
                       $text= str_replace("\n"," ",$text);
                       $text= str_replace("\t"," ",$text);
               }
               else $text = "";
               
               $output.="<dt><a href='$href'>$title</a></dt>";
               if ($text) $output.="<dd>$text</dd>\n";
       }
       $output.="</dl>";
   }
   
   return $output;
   
}

?>
 </nowiki>

from: http://meta.wikimedia.org/wiki/User:Duesentrieb/RSS

also this version has been extended. See http://meta.wikimedia.org/wiki/User:Alxndr/RSS !

[[Category:Mediawiki Extensions]]