AtomFeed.php

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<?php
class AtomFeed extends ChannelFeed {
    function formatTime( $timestamp ) {
        if ( $timestamp ) {
            // need to use RFC 822 time format at least for rss2.0
            return gmdate( 'Y-m-d\TH:i:s', wfTimestamp( TS_UNIX, $timestamp ) );
        }
    }
 
    function outHeader() {
        global $wgVersion;
        $this->outXmlHeader();
        // Manually escaping rather than letting Mustache do it because Mustache
        // uses htmlentities, which does not work with XML
        $templateParams = [
            'language' => $this->xmlEncode( $this->getLanguage() ),
            'feedID' => $this->getFeedId(),
            'title' => $this->getTitle(),
            'url' => $this->xmlEncode( wfExpandUrl( $this->getUrlUnescaped(), PROTO_CURRENT ) ),
            'selfUrl' => $this->getSelfUrl(),
            'timestamp' => $this->xmlEncode( $this->formatTime( wfTimestampNow() ) ),
            'description' => $this->getDescription(),
            'version' => $this->xmlEncode( $wgVersion ),
        ];
        print $this->templateParser->processTemplate( 'AtomHeader', $templateParams );
    }
 
    private function getFeedId() {
        return $this->getSelfUrl();
    }
 
    private function getSelfUrl() {
        global $wgRequest;
        return htmlspecialchars( $wgRequest->getFullRequestURL() );
    }
 
    function outItem( $item ) {
        global $wgMimeType;
        // Manually escaping rather than letting Mustache do it because Mustache
        // uses htmlentities, which does not work with XML
        $templateParams = [
            "uniqueID" => $item->getUniqueID(),
            "title" => $item->getTitle(),
            "mimeType" => $this->xmlEncode( $wgMimeType ),
            "url" => $this->xmlEncode( wfExpandUrl( $item->getUrlUnescaped(), PROTO_CURRENT ) ),
            "date" => $this->xmlEncode( $this->formatTime( $item->getDate() ) ),
            "description" => $item->getDescription(),
            "author" => $item->getAuthor()
        ];
        print $this->templateParser->processTemplate( 'AtomItem', $templateParams );
    }
 
    function outFooter() {
        print "</feed>";
    }
}