Your IP : 108.162.216.193
<?php
/**
* Basic support for outputting syndication feeds in RSS, other formats.
*
* Contain a feed class as well as classes to build rss / atom ... feeds
* Available feeds are defined in Defines.php
*
* Copyright © 2004 Brion Vibber <brion@pobox.com>
* http://www.mediawiki.org/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
/**
* @defgroup Feed Feed
*/
/**
* A base class for basic support for outputting syndication feeds in RSS and other formats.
*
* @ingroup Feed
*/
class FeedItem {
/**
* @var Title
*/
var $title;
var $description;
var $url;
var $date;
var $author;
var $uniqueId;
var $comments;
var $rssIsPermalink = false;
/**
* Constructor
*
* @param string|Title $title Item's title
* @param $description String
* @param string $url URL uniquely designating the item.
* @param string $date Item's date
* @param string $author Author's user name
* @param $comments String
*/
function __construct( $title, $description, $url, $date = '', $author = '', $comments = '' ) {
$this->title = $title;
$this->description = $description;
$this->url = $url;
$this->uniqueId = $url;
$this->date = $date;
$this->author = $author;
$this->comments = $comments;
}
/**
* Encode $string so that it can be safely embedded in a XML document
*
* @param string $string string to encode
* @return String
*/
public function xmlEncode( $string ) {
$string = str_replace( "\r\n", "\n", $string );
$string = preg_replace( '/[\x00-\x08\x0b\x0c\x0e-\x1f]/', '', $string );
return htmlspecialchars( $string );
}
/**
* Get the unique id of this item
*
* @return String
*/
public function getUniqueId() {
if ( $this->uniqueId ) {
return $this->xmlEncode( $this->uniqueId );
}
}
/**
* set the unique id of an item
*
* @param string $uniqueId unique id for the item
* @param $rssIsPermalink Boolean: set to true if the guid (unique id) is a permalink (RSS feeds only)
*/
public function setUniqueId( $uniqueId, $rssIsPermalink = false ) {
$this->uniqueId = $uniqueId;
$this->rssIsPermalink = $rssIsPermalink;
}
/**
* Get the title of this item; already xml-encoded
*
* @return String
*/
public function getTitle() {
return $this->xmlEncode( $this->title );
}
/**
* Get the URL of this item; already xml-encoded
*
* @return String
*/
public function getUrl() {
return $this->xmlEncode( $this->url );
}
/**
* Get the description of this item; already xml-encoded
*
* @return String
*/
public function getDescription() {
return $this->xmlEncode( $this->description );
}
/**
* Get the language of this item
*
* @return String
*/
public function getLanguage() {
global $wgLanguageCode;
return $wgLanguageCode;
}
/**
* Get the title of this item
*
* @return String
*/
public function getDate() {
return $this->date;
}
/**
* Get the author of this item; already xml-encoded
*
* @return String
*/
public function getAuthor() {
return $this->xmlEncode( $this->author );
}
/**
* Get the comment of this item; already xml-encoded
*
* @return String
*/
public function getComments() {
return $this->xmlEncode( $this->comments );
}
/**
* Quickie hack... strip out wikilinks to more legible form from the comment.
*
* @param string $text wikitext
* @return String
*/
public static function stripComment( $text ) {
return preg_replace( '/\[\[([^]]*\|)?([^]]+)\]\]/', '\2', $text );
}
/**#@-*/
}
/**
* @todo document (needs one-sentence top-level class description).
* @ingroup Feed
*/
abstract class ChannelFeed extends FeedItem {
/**
* Generate Header of the feed
* @par Example:
* @code
* print "<feed>";
* @endcode
* @param $item
*/
abstract public function outHeader();
/**
* Generate an item
* @par Example:
* @code
* print "<item>...</item>";
* @endcode
* @param $item
*/
abstract public function outItem( $item );
/**
* Generate Footer of the feed
* @par Example:
* @code
* print "</feed>";
* @endcode
*/
abstract public function outFooter();
/**
* Setup and send HTTP headers. Don't send any content;
* content might end up being cached and re-sent with
* these same headers later.
*
* This should be called from the outHeader() method,
* but can also be called separately.
*/
public function httpHeaders() {
global $wgOut, $wgVaryOnXFP;
# We take over from $wgOut, excepting its cache header info
$wgOut->disable();
$mimetype = $this->contentType();
header( "Content-type: $mimetype; charset=UTF-8" );
if ( $wgVaryOnXFP ) {
$wgOut->addVaryHeader( 'X-Forwarded-Proto' );
}
$wgOut->sendCacheControl();
}
/**
* Return an internet media type to be sent in the headers.
*
* @return string
* @private
*/
function contentType() {
global $wgRequest;
$ctype = $wgRequest->getVal( 'ctype', 'application/xml' );
$allowedctypes = array( 'application/xml', 'text/xml', 'application/rss+xml', 'application/atom+xml' );
return (in_array( $ctype, $allowedctypes ) ? $ctype : 'application/xml');
}
/**
* Output the initial XML headers with a stylesheet for legibility
* if someone finds it in a browser.
* @private
*/
function outXmlHeader() {
global $wgStylePath, $wgStyleVersion;
$this->httpHeaders();
echo '<?xml version="1.0"?>' . "\n";
echo '<?xml-stylesheet type="text/css" href="' .
htmlspecialchars( wfExpandUrl( "$wgStylePath/common/feed.css?$wgStyleVersion", PROTO_CURRENT ) ) .
'"?' . ">\n";
}
}
/**
* Generate a RSS feed
*
* @ingroup Feed
*/
class RSSFeed extends ChannelFeed {
/**
* Format a date given a timestamp
*
* @param $ts Integer: timestamp
* @return String: date string
*/
function formatTime( $ts ) {
return gmdate( 'D, d M Y H:i:s \G\M\T', wfTimestamp( TS_UNIX, $ts ) );
}
/**
* Output an RSS 2.0 header
*/
function outHeader() {
global $wgVersion;
$this->outXmlHeader();
?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/">
<channel>
<title><?php print $this->getTitle() ?></title>
<link><?php print wfExpandUrl( $this->getUrl(), PROTO_CURRENT ) ?></link>
<description><?php print $this->getDescription() ?></description>
<language><?php print $this->getLanguage() ?></language>
<generator>MediaWiki <?php print $wgVersion ?></generator>
<lastBuildDate><?php print $this->formatTime( wfTimestampNow() ) ?></lastBuildDate>
<?php
}
/**
* Output an RSS 2.0 item
* @param $item FeedItem: item to be output
*/
function outItem( $item ) {
?>
<item>
<title><?php print $item->getTitle() ?></title>
<link><?php print wfExpandUrl( $item->getUrl(), PROTO_CURRENT ) ?></link>
<guid<?php if( !$item->rssIsPermalink ) print ' isPermaLink="false"' ?>><?php print $item->getUniqueId() ?></guid>
<description><?php print $item->getDescription() ?></description>
<?php if( $item->getDate() ) { ?><pubDate><?php print $this->formatTime( $item->getDate() ) ?></pubDate><?php } ?>
<?php if( $item->getAuthor() ) { ?><dc:creator><?php print $item->getAuthor() ?></dc:creator><?php }?>
<?php if( $item->getComments() ) { ?><comments><?php print wfExpandUrl( $item->getComments(), PROTO_CURRENT ) ?></comments><?php }?>
</item>
<?php
}
/**
* Output an RSS 2.0 footer
*/
function outFooter() {
?>
</channel>
</rss><?php
}
}
/**
* Generate an Atom feed
*
* @ingroup Feed
*/
class AtomFeed extends ChannelFeed {
/**
* @todo document
* @return string
*/
function formatTime( $ts ) {
// need to use RFC 822 time format at least for rss2.0
return gmdate( 'Y-m-d\TH:i:s', wfTimestamp( TS_UNIX, $ts ) );
}
/**
* Outputs a basic header for Atom 1.0 feeds.
*/
function outHeader() {
global $wgVersion;
$this->outXmlHeader();
?><feed xmlns="http://www.w3.org/2005/Atom" xml:lang="<?php print $this->getLanguage() ?>">
<id><?php print $this->getFeedId() ?></id>
<title><?php print $this->getTitle() ?></title>
<link rel="self" type="application/atom+xml" href="<?php print wfExpandUrl( $this->getSelfUrl(), PROTO_CURRENT ) ?>"/>
<link rel="alternate" type="text/html" href="<?php print wfExpandUrl( $this->getUrl(), PROTO_CURRENT ) ?>"/>
<updated><?php print $this->formatTime( wfTimestampNow() ) ?>Z</updated>
<subtitle><?php print $this->getDescription() ?></subtitle>
<generator>MediaWiki <?php print $wgVersion ?></generator>
<?php
}
/**
* Atom 1.0 requires a unique, opaque IRI as a unique identifier
* for every feed we create. For now just use the URL, but who
* can tell if that's right? If we put options on the feed, do we
* have to change the id? Maybe? Maybe not.
*
* @return string
* @private
*/
function getFeedId() {
return $this->getSelfUrl();
}
/**
* Atom 1.0 requests a self-reference to the feed.
* @return string
* @private
*/
function getSelfUrl() {
global $wgRequest;
return htmlspecialchars( $wgRequest->getFullRequestURL() );
}
/**
* Output a given item.
* @param $item
*/
function outItem( $item ) {
global $wgMimeType;
?>
<entry>
<id><?php print $item->getUniqueId() ?></id>
<title><?php print $item->getTitle() ?></title>
<link rel="alternate" type="<?php print $wgMimeType ?>" href="<?php print wfExpandUrl( $item->getUrl(), PROTO_CURRENT ) ?>"/>
<?php if( $item->getDate() ) { ?>
<updated><?php print $this->formatTime( $item->getDate() ) ?>Z</updated>
<?php } ?>
<summary type="html"><?php print $item->getDescription() ?></summary>
<?php if( $item->getAuthor() ) { ?><author><name><?php print $item->getAuthor() ?></name></author><?php }?>
</entry>
<?php /* @todo FIXME: Need to add comments
<?php if( $item->getComments() ) { ?><dc:comment><?php print $item->getComments() ?></dc:comment><?php }?>
*/
}
/**
* Outputs the footer for Atom 1.0 feed (basically '\</feed\>').
*/
function outFooter() {?>
</feed><?php
}
}