# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# http://www.gnu.org/copyleft/gpl.html
-$wgFeedClasses = array(
- "rss" => "RSSFeed",
- # "atom" => "AtomFeed",
- );
+/**
+ * Contain a feed class as well as classes to build rss / atom ... feeds
+ * Available feeds are defined in Defines.php
+ * @package MediaWiki
+ */
+
+/**
+ * @todo document
+ * @package MediaWiki
+ */
class FeedItem {
- var $Title = "Wiki";
- var $Description = "";
- var $Url = "";
- var $Date = "";
- var $Author = "";
+ /**#@+
+ * @var string
+ * @access private
+ */
+ var $Title = 'Wiki';
+ var $Description = '';
+ var $Url = '';
+ var $Date = '';
+ var $Author = '';
+ /**#@-*/
- function FeedItem( $Title, $Description, $Url, $Date = "", $Author = "" ) {
+ /**#@+
+ * @todo document
+ */
+ function FeedItem( $Title, $Description, $Url, $Date = '', $Author = '', $Comments = '' ) {
$this->Title = $Title;
$this->Description = $Description;
$this->Url = $Url;
$this->Date = $Date;
$this->Author = $Author;
+ $this->Comments = $Comments;
}
- /* Static... */
+ /**
+ * @static
+ */
function xmlEncode( $string ) {
- global $wgInputEncoding, $wgLang;
$string = str_replace( "\r\n", "\n", $string );
- if( strcasecmp( $wgInputEncoding, "utf-8" ) != 0 ) {
- $string = $wgLang->iconv( $wgInputEncoding, "utf-8" );
- }
+ $string = preg_replace( '/[\x00-\x08\x0b\x0c\x0e-\x1f]/', '', $string );
return htmlspecialchars( $string );
}
- function getTitle() {
- return $this->xmlEncode( $this->Title );
- }
- function getUrl() {
- return $this->xmlEncode( $this->Url );
- }
- function getDescription() {
- return $this->xmlEncode( $this->Description );
- }
+
+ function getTitle() { return $this->xmlEncode( $this->Title ); }
+ function getUrl() { return $this->xmlEncode( $this->Url ); }
+ function getDescription() { return $this->xmlEncode( $this->Description ); }
function getLanguage() {
- global $wgLanguageCode;
- return $wgLanguageCode;
- }
- function getDate() {
- return $this->Date;
- }
- function getAuthor() {
- return $this->xmlEncode( $this->Author );
+ global $wgContLanguageCode;
+ return $wgContLanguageCode;
}
+ function getDate() { return $this->Date; }
+ function getAuthor() { return $this->xmlEncode( $this->Author ); }
+ function getComments() { return $this->xmlEncode( $this->Comments ); }
+ /**#@-*/
}
+/**
+ * @todo document
+ * @package MediaWiki
+ */
class ChannelFeed extends FeedItem {
- /* Abstract functions, override! */
+ /**#@+
+ * Abstract function, override!
+ * @abstract
+ */
+
+ /**
+ * Generate Header of the feed
+ */
function outHeader() {
# print "<feed>";
}
+
+ /**
+ * Generate an item
+ * @param $item
+ */
function outItem( $item ) {
# print "<item>...</item>";
}
+
+ /**
+ * Generate Footer of the feed
+ */
function outFooter() {
# print "</feed>";
}
+ /**#@-*/
+
+ /**
+ * 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.
+ *
+ * @access public
+ */
+ function httpHeaders() {
+ global $wgOut;
+
+ # We take over from $wgOut, excepting its cache header info
+ $wgOut->disable();
+ $mimetype = $this->contentType();
+ header( "Content-type: $mimetype; charset=UTF-8" );
+ $wgOut->sendCacheControl();
+
+ }
+
+ /**
+ * Return an internet media type to be sent in the headers.
+ *
+ * @return string
+ * @access 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.
+ * @access private
+ */
+ function outXmlHeader() {
+ global $wgServer, $wgStylePath;
+
+ $this->httpHeaders();
+ echo '<?xml version="1.0" encoding="utf-8"?>' . "\n";
+ echo '<?xml-stylesheet type="text/css" href="' .
+ htmlspecialchars( "$wgServer$wgStylePath/common/feed.css" ) . '"?' . ">\n";
+ }
}
+/**
+ * Generate a RSS feed
+ * @todo document
+ * @package MediaWiki
+ */
class RSSFeed extends ChannelFeed {
+
+ /**
+ * Format a date given a timestamp
+ * @param integer $ts Timestamp
+ * @return string Date string
+ */
function formatTime( $ts ) {
- return gmdate( "D, d M Y H:i:s T", wfTimestamp2Unix( $ts ) );
+ return gmdate( 'D, d M Y H:i:s \G\M\T', wfTimestamp( TS_UNIX, $ts ) );
}
+ /**
+ * Ouput an RSS 2.0 header
+ */
function outHeader() {
global $wgVersion;
- header( "Content-type: application/xml; charset=UTF-8" );
- print '<' . '?xml version="1.0" encoding="utf-8"?' . ">\n";
- ?><rss version="2.0">
+ $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 $this->getUrl() ?></link>
<?php
}
+ /**
+ * Output an RSS 2.0 item
+ * @param FeedItem item to be output
+ */
function outItem( $item ) {
?>
<item>
<link><?php print $item->getUrl() ?></link>
<description><?php print $item->getDescription() ?></description>
<?php if( $item->getDate() ) { ?><pubDate><?php print $this->formatTime( $item->getDate() ) ?></pubDate><?php } ?>
- <?php if( $item->getAuthor() ) { ?><author><?php print $item->getAuthor() ?></author><?php }?>
-
+ <?php if( $item->getAuthor() ) { ?><dc:creator><?php print $item->getAuthor() ?></dc:creator><?php }?>
+ <?php if( $item->getComments() ) { ?><comments><?php print $item->getComments() ?></comments><?php }?>
</item>
<?php
}
+ /**
+ * Ouput an RSS 2.0 footer
+ */
function outFooter() {
?>
</channel>
}
}
-?>
\ No newline at end of file
+/**
+ * Generate an Atom feed
+ * @todo document
+ * @package MediaWiki
+ */
+class AtomFeed extends ChannelFeed {
+ /**
+ * @todo document
+ */
+ 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 ) );
+ }
+
+ /**
+ * @todo document
+ */
+ function outHeader() {
+ global $wgVersion, $wgOut;
+
+ $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 $this->getSelfUrl() ?>"/>
+ <link rel="alternate" type="text/html" href="<?php print $this->getUrl() ?>"/>
+ <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 indentifier
+ * 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
+ * @access private
+ */
+ function getFeedId() {
+ return $this->getSelfUrl();
+ }
+
+ /**
+ * Atom 1.0 requests a self-reference to the feed.
+ * @return string
+ * @access private
+ */
+ function getSelfUrl() {
+ global $wgRequest;
+ return htmlspecialchars( $wgRequest->getFullRequestURL() );
+ }
+
+ /**
+ * @todo document
+ */
+ function outItem( $item ) {
+ global $wgMimeType;
+ ?>
+ <entry>
+ <id><?php print $item->getUrl() ?></id>
+ <title><?php print $item->getTitle() ?></title>
+ <link rel="alternate" type="<?php print $wgMimeType ?>" href="<?php print $item->getUrl() ?>"/>
+ <?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 /* FIXME need to add comments
+ <?php if( $item->getComments() ) { ?><dc:comment><?php print $item->getComments() ?></dc:comment><?php }?>
+ */
+ }
+
+ /**
+ * @todo document
+ */
+ function outFooter() {?>
+ </feed><?php
+ }
+}
+
+?>