ApiFeedContributions.php

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<?php
class ApiFeedContributions extends ApiBase {

    public function getCustomPrinter() {
        return new ApiFormatFeedWrapper( $this->getMain() );
    }

    public function execute() {
        $params = $this->extractRequestParams();

        global $wgFeed, $wgFeedClasses, $wgFeedLimit, $wgSitename, $wgLanguageCode;

        if ( !$wgFeed ) {
            $this->dieUsage( 'Syndication feeds are not available', 'feed-unavailable' );
        }

        if ( !isset( $wgFeedClasses[$params['feedformat']] ) ) {
            $this->dieUsage( 'Invalid subscription feed type', 'feed-invalid' );
        }

        global $wgMiserMode;
        if ( $params['showsizediff'] && $wgMiserMode ) {
            $this->dieUsage( 'Size difference is disabled in Miser Mode', 'sizediffdisabled' );
        }

        $msg = wfMessage( 'Contributions' )->inContentLanguage()->text();
        $feedTitle = $wgSitename . ' - ' . $msg . ' [' . $wgLanguageCode . ']';
        $feedUrl = SpecialPage::getTitleFor( 'Contributions', $params['user'] )->getFullURL();

        $target = $params['user'] == 'newbies'
            ? 'newbies'
            : Title::makeTitleSafe( NS_USER, $params['user'] )->getText();

        $feed = new $wgFeedClasses[$params['feedformat']] (
            $feedTitle,
            htmlspecialchars( $msg ),
            $feedUrl
        );

        $pager = new ContribsPager( $this->getContext(), array(
            'target' => $target,
            'namespace' => $params['namespace'],
            'year' => $params['year'],
            'month' => $params['month'],
            'tagFilter' => $params['tagfilter'],
            'deletedOnly' => $params['deletedonly'],
            'topOnly' => $params['toponly'],
            'newOnly' => $params['newonly'],
            'showSizeDiff' => $params['showsizediff'],
        ) );

        if ( $pager->getLimit() > $wgFeedLimit ) {
            $pager->setLimit( $wgFeedLimit );
        }

        $feedItems = array();
        if ( $pager->getNumRows() > 0 ) {
            $count = 0;
            $limit = $pager->getLimit();
            foreach ( $pager->mResult as $row ) {
                // ContribsPager selects one more row for navigation, skip that row
                if ( ++$count > $limit ) {
                    break;
                }
                $feedItems[] = $this->feedItem( $row );
            }
        }

        ApiFormatFeedWrapper::setResult( $this->getResult(), $feed, $feedItems );
    }

    protected function feedItem( $row ) {
        $title = Title::makeTitle( intval( $row->page_namespace ), $row->page_title );
        if ( $title && $title->userCan( 'read', $this->getUser() ) ) {
            $date = $row->rev_timestamp;
            $comments = $title->getTalkPage()->getFullURL();
            $revision = Revision::newFromRow( $row );

            return new FeedItem(
                $title->getPrefixedText(),
                $this->feedItemDesc( $revision ),
                $title->getFullURL(),
                $date,
                $this->feedItemAuthor( $revision ),
                $comments
            );
        }

        return null;
    }

    protected function feedItemAuthor( $revision ) {
        return $revision->getUserText();
    }

    protected function feedItemDesc( $revision ) {
        if ( $revision ) {
            $msg = wfMessage( 'colon-separator' )->inContentLanguage()->text();
            $content = $revision->getContent();

            if ( $content instanceof TextContent ) {
                // only textual content has a "source view".
                $html = nl2br( htmlspecialchars( $content->getNativeData() ) );
            } else {
                //XXX: we could get an HTML representation of the content via getParserOutput, but that may
                //     contain JS magic and generally may not be suitable for inclusion in a feed.
                //     Perhaps Content should have a getDescriptiveHtml method and/or a getSourceText method.
                //Compare also FeedUtils::formatDiffRow.
                $html = '';
            }

            return '<p>' . htmlspecialchars( $revision->getUserText() ) . $msg .
                htmlspecialchars( FeedItem::stripComment( $revision->getComment() ) ) .
                "</p>\n<hr />\n<div>" . $html . "</div>";
        }

        return '';
    }

    public function getAllowedParams() {
        global $wgFeedClasses;
        $feedFormatNames = array_keys( $wgFeedClasses );

        return array(
            'feedformat' => array(
                ApiBase::PARAM_DFLT => 'rss',
                ApiBase::PARAM_TYPE => $feedFormatNames
            ),
            'user' => array(
                ApiBase::PARAM_TYPE => 'user',
                ApiBase::PARAM_REQUIRED => true,
            ),
            'namespace' => array(
                ApiBase::PARAM_TYPE => 'namespace'
            ),
            'year' => array(
                ApiBase::PARAM_TYPE => 'integer'
            ),
            'month' => array(
                ApiBase::PARAM_TYPE => 'integer'
            ),
            'tagfilter' => array(
                ApiBase::PARAM_ISMULTI => true,
                ApiBase::PARAM_TYPE => array_values( ChangeTags::listDefinedTags() ),
                ApiBase::PARAM_DFLT => '',
            ),
            'deletedonly' => false,
            'toponly' => false,
            'newonly' => false,
            'showsizediff' => false,
        );
    }

    public function getParamDescription() {
        return array(
            'feedformat' => 'The format of the feed',
            'user' => 'What users to get the contributions for',
            'namespace' => 'What namespace to filter the contributions by',
            'year' => 'From year (and earlier)',
            'month' => 'From month (and earlier)',
            'tagfilter' => 'Filter contributions that have these tags',
            'deletedonly' => 'Show only deleted contributions',
            'toponly' => 'Only show edits that are latest revisions',
            'newonly' => 'Only show edits that are page creations',
            'showsizediff' => 'Show the size difference between revisions. Disabled in Miser Mode',
        );
    }

    public function getDescription() {
        return 'Returns a user contributions feed.';
    }

    public function getPossibleErrors() {
        return array_merge( parent::getPossibleErrors(), array(
            array( 'code' => 'feed-unavailable', 'info' => 'Syndication feeds are not available' ),
            array( 'code' => 'feed-invalid', 'info' => 'Invalid subscription feed type' ),
            array( 'code' => 'sizediffdisabled', 'info' => 'Size difference is disabled in Miser Mode' ),
        ) );
    }

    public function getExamples() {
        return array(
            'api.php?action=feedcontributions&user=Reedy',
        );
    }
}