ApiPurge.php

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<?php

class ApiPurge extends ApiBase {

        public function __construct( $main, $action ) {
                parent::__construct( $main, $action );
        }

        public function execute() {
                $user = $this->getUser();
                $params = $this->extractRequestParams();
                if ( !$user->isAllowed( 'purge' ) && !$this->getMain()->isInternalMode() &&
                                !$this->getRequest()->wasPosted() ) {
                        $this->dieUsageMsg( array( 'mustbeposted', $this->getModuleName() ) );
                }

                $forceLinkUpdate = $params['forcelinkupdate'];
                $pageSet = new ApiPageSet( $this );
                $pageSet->execute();

                $result = array();
                foreach( $pageSet->getInvalidTitles() as $title ) {
                        $r = array();
                        $r['title'] = $title;
                        $r['invalid'] = '';
                        $result[] = $r;
                }
                foreach( $pageSet->getMissingPageIDs() as $p ) {
                        $page = array();
                        $page['pageid'] = $p;
                        $page['missing'] = '';
                        $result[] = $page;
                }
                foreach( $pageSet->getMissingRevisionIDs() as $r ) {
                        $rev = array();
                        $rev['revid'] = $r;
                        $rev['missing'] = '';
                        $result[] = $rev;
                }

                foreach ( $pageSet->getTitles() as $title ) {
                        $r = array();

                        ApiQueryBase::addTitleInfo( $r, $title );
                        if ( !$title->exists() ) {
                                $r['missing'] = '';
                                $result[] = $r;
                                continue;
                        }

                        $page = WikiPage::factory( $title );
                        $page->doPurge(); // Directly purge and skip the UI part of purge().
                        $r['purged'] = '';

                        if( $forceLinkUpdate ) {
                                if ( !$user->pingLimiter() ) {
                                        global $wgParser, $wgEnableParserCache;

                                        $popts = ParserOptions::newFromContext( $this->getContext() );
                                        $p_result = $wgParser->parse( $page->getRawText(), $title, $popts,
                                                true, true, $page->getLatest() );

                                        # Update the links tables
                                        $u = new LinksUpdate( $title, $p_result );
                                        $u->doUpdate();

                                        $r['linkupdate'] = '';

                                        if ( $wgEnableParserCache ) {
                                                $pcache = ParserCache::singleton();
                                                $pcache->save( $p_result, $page, $popts );
                                        }
                                } else {
                                        $this->setWarning( $this->parseMsg( array( 'actionthrottledtext' ) ) );
                                        $forceLinkUpdate = false;
                                }
                        }

                        $result[] = $r;
                }
                $apiResult = $this->getResult();
                $apiResult->setIndexedTagName( $result, 'page' );
                $apiResult->addValue( null, $this->getModuleName(), $result );
        }

        public function isWriteMode() {
                return true;
        }

        public function getAllowedParams() {
                $psModule = new ApiPageSet( $this );
                return $psModule->getAllowedParams() + array(
                        'forcelinkupdate' => false,
                );
        }

        public function getParamDescription() {
                $psModule = new ApiPageSet( $this );
                return $psModule->getParamDescription() + array(
                        'forcelinkupdate' => 'Update the links tables',
                );
        }

        public function getDescription() {
                return array( 'Purge the cache for the given titles.',
                        'Requires a POST request if the user is not logged in.'
                );
        }

        public function getPossibleErrors() {
                $psModule = new ApiPageSet( $this );
                return array_merge(
                        parent::getPossibleErrors(),
                        array( array( 'cantpurge' ), ),
                        $psModule->getPossibleErrors()
                );
        }

        public function getExamples() {
                return array(
                        'api.php?action=purge&titles=Main_Page|API' => 'Purge the "Main Page" and the "API" page',
                );
        }

        public function getHelpUrls() {
                return 'https://www.mediawiki.org/wiki/API:Purge';
        }

        public function getVersion() {
                return __CLASS__ . ': $Id$';
        }
}