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<?php declare( strict_types = 1 ); namespace Wikimedia\Parsoid\Config\Api; use Wikimedia\Parsoid\Config\DataAccess as IDataAccess; use Wikimedia\Parsoid\Config\PageConfig; use Wikimedia\Parsoid\Config\PageContent; use Wikimedia\Parsoid\Core\ContentMetadataCollector; use Wikimedia\Parsoid\Mocks\MockPageContent; use Wikimedia\Parsoid\Utils\PHPUtils; /** * DataAccess via MediaWiki's Action API * * Note this is intended for testing, not performance. / class DataAccess extends IDataAccess { /* @var ApiHelper / private $api; /* * @var bool Should we strip the protocol from returned URLs? * Generally this should be true, since the protocol of the API * request doesn't necessarily match the protocol of article * access; ie, we could be using https to access the API but emit * article content which can be read with http. But for running * parserTests, we need to include the protocol in order to match * the parserTest configuration in core. / private $stripProto; /* * @name Caching * @todo Someone should librarize MediaWiki core's MapCacheLRU so we can * pull it in via composer and use it here. * @{ / private const MAX_CACHE_LEN = 100; /* * @var array / private $cache = []; /* * @var SiteConfig / private $siteConfig = null; /* * Get from cache * @param string $key * @return mixed / private function getCache( string $key ) { if ( isset( $this->cache[$key] ) ) { $ret = $this->cache[$key]; // The LRU cache uses position in the array to indicate recency, so // move the accessed key to the end. unset( $this->cache[$key] ); $this->cache[$key] = $ret; return $ret; } return null; } /* * Set a value into cache * @param string $key * @param mixed $value Not null. / private function setCache( string $key, $value ): void { if ( isset( $this->cache[$key] ) ) { // The LRU cache uses position in the array to indicate recency, so // remove the old entry so the new version goes at the end. unset( $this->cache[$key] ); } elseif ( count( $this->cache ) >= self::MAX_CACHE_LEN ) { reset( $this->cache ); $evictKey = key( $this->cache ); unset( $this->cache[$evictKey] ); } $this->cache[$key] = $value; } /* @} / /* * @param ApiHelper $api * @param ?SiteConfig $siteConfig * @param array $opts / public function __construct( ApiHelper $api, ?SiteConfig $siteConfig, array $opts ) { $this->api = $api; $this->siteConfig = $siteConfig; $this->stripProto = $opts['stripProto'] ?? true; } /* @inheritDoc / public function getPageInfo( PageConfig $pageConfig, array $titles ): array { if ( !$titles ) { return []; } $ret = []; foreach ( array_chunk( $titles, 50 ) as $batch ) { $data = $this->api->makeRequest( [ 'action' => 'query', 'prop' => 'info', 'inprop' => 'linkclasses', 'inlinkcontext' => $pageConfig->getTitle(), 'titles' => implode( '\|', $batch ), ] )['query']; $norm = []; if ( isset( $data['normalized'] ) ) { foreach ( $data['normalized'] as $n ) { $from = $n['from']; if ( $n['fromencoded'] ) { $from = rawurldecode( $from ); } $norm[$from] = $n['to']; } } $pages = []; foreach ( $data['pages'] as $p ) { $pages[$p['title']] = $p; } foreach ( $batch as $title ) { $ttitle = $title; while ( isset( $norm[$ttitle] ) ) { $ttitle = $norm[$ttitle]; } $page = $pages[$ttitle] ?? []; $ret[$title] = [ 'pageId' => $page['pageid'] ?? null, 'revId' => $page['lastrevid'] ?? null, 'missing' => $page['missing'] ?? false, 'known' => ( $page['known'] ?? false ), 'redirect' => $page['redirect'] ?? false, 'linkclasses' => $page['linkclasses'] ?? [], 'invalid' => $page['invalid'] ?? false, ]; if ( !( $ret[$title]['missing'] \|\| $ret[$title]['invalid'] ) ) { $ret[$title]['known'] = true; } } } return $ret; } /* @inheritDoc / public function getFileInfo( PageConfig $pageConfig, array $files ): array { $sc = $this->siteConfig; if ( $sc && $sc->hasVideoInfo() ) { $prefix = "vi"; $propName = "videoinfo"; } else { $prefix = "ii"; $propName = "imageinfo"; } $apiArgs2 = [ 'action' => 'query', 'format' => 'json', 'formatversion' => 2, 'rawcontinue' => 1, 'prop' => $propName, "${prefix}badfilecontexttitle" => $pageConfig->getTitle(), "${prefix}prop" => implode( '\|', [ 'mediatype', 'mime', 'size', 'url', 'badfile' ] ) ]; if ( $prefix === 'vi' ) { $apiArgs2["viprop"] .= '\|derivatives\|timedtext'; } $ret = []; foreach ( $files as $file ) { $apiArgs = $apiArgs2; // Copy since we modify it $name = $file[0]; $dims = $file[1]; $imgNS = $sc ? $sc->namespaceName( $sc->canonicalNamespaceId( "File" ) ) : "File"; $apiArgs['titles'] = "$imgNS:$name"; $needsWidth = isset( $dims['page'] ) \|\| isset( $dims['lang'] ); if ( isset( $dims['width'] ) ) { $apiArgs["${prefix}urlwidth"] = $dims['width']; if ( $needsWidth ) { if ( isset( $dims['page'] ) ) { // PDF $apiArgs["${prefix}urlparam"] = "page{$dims['page']}-{$dims['width']}px"; } elseif ( isset( $dims['lang'] ) ) { // SVG $apiArgs["${prefix}urlparam"] = "lang{$dims['lang']}-{$dims['width']}px"; } $needsWidth = false; } } if ( isset( $dims['height'] ) ) { $apiArgs["${prefix}urlheight"] = $dims['height']; } if ( isset( $dims['seek'] ) ) { $apiArgs["${prefix}urlparam"] = "seek={$dims['seek']}"; } do { $data = $this->api->makeRequest( $apiArgs ); // Expect exactly 1 row $fileinfo = $data['query']['pages'][0][$propName][0]; // Corner case: if page is set, the core ImageInfo API doesn't // respect it unless* width is set as well. So repeat the // request if necessary. if ( isset( $fileinfo['pagecount'] ) && !isset( $dims['page'] ) ) { $dims['page'] = 1; # also ensures we won't get here again $needsWidth = true; } if ( $needsWidth && !isset( $fileinfo['filemissing'] ) ) { $needsWidth = false; # ensure we won't get here again $width = $fileinfo['width']; $apiArgs["${prefix}urlwidth"] = $width; if ( isset( $dims['page'] ) ) { // PDF $apiArgs["${prefix}urlparam"] = "page{$dims['page']}-{$width}px"; } elseif ( isset( $dims['lang'] ) ) { // SVG $apiArgs["${prefix}urlparam"] = "lang{$dims['lang']}-{$width}px"; } continue; } break; } while ( true ); if ( isset( $fileinfo['filemissing'] ) ) { $fileinfo = null; } else { $fileinfo['badFile'] = $data['query']['pages'][0]['badfile']; $this->stripProto( $fileinfo, 'url' ); $this->stripProto( $fileinfo, 'thumburl' ); $this->stripProto( $fileinfo, 'descriptionurl' ); $this->stripProto( $fileinfo, 'descriptionshorturl' ); foreach ( $fileinfo['responsiveUrls'] ?? [] as $density => $url ) { $this->stripProto( $fileinfo['responsiveUrls'], (string)$density ); } if ( $prefix === 'vi' ) { foreach ( $fileinfo['thumbdata']['derivatives'] ?? [] as $j => $d ) { $this->stripProto( $fileinfo['thumbdata']['derivatives'][$j], 'src' ); } foreach ( $fileinfo['thumbdata']['timedtext'] ?? [] as $j => $d ) { $this->stripProto( $fileinfo['thumbdata']['timedtext'][$j], 'src' ); } } } $ret[] = $fileinfo; } return $ret; } /** * Convert the given URL into protocol-relative form. * * @param ?array &$obj * @param string $key / private function stripProto( ?array &$obj, string $key ): void { if ( $obj !== null && !empty( $obj[$key] ) && $this->stripProto ) { $obj[$key] = preg_replace( '#^https?://#', '//', $obj[$key] ); } } /* @inheritDoc / public function doPst( PageConfig $pageConfig, string $wikitext ): string { $key = implode( ':', [ 'pst', md5( $pageConfig->getTitle() ) , md5( $wikitext ) ] ); $ret = $this->getCache( $key ); if ( $ret === null ) { $data = $this->api->makeRequest( [ 'action' => 'parse', 'title' => $pageConfig->getTitle(), 'text' => $wikitext, 'contentmodel' => 'wikitext', 'onlypst' => 1, ] ); $ret = $data['parse']['text']; $this->setCache( $key, $ret ); } return $ret; } /* * Transfer the metadata returned in an API result into our * ContentMetadataCollector. * @param array $data * @param ContentMetadataCollector $metadata / private function mergeMetadata( array $data, ContentMetadataCollector $metadata ): void { foreach ( ( $data['categories'] ?? [] ) as $c ) { $metadata->addCategory( $c['category'], $c['sortkey'] ); } $metadata->addModules( $data['modules'] ?? [] ); $metadata->addModuleStyles( $data['modulestyles'] ?? [] ); foreach ( ( $data['jsconfigvars'] ?? [] ) as $key => $value ) { $strategy = 'write-once'; if ( is_array( $value ) ) { // Strategy value will be exposed by change // I974d9ecfb4ca8b22361d25c4c70fc5e55c39d5ed in core. $strategy = $value['_mw-strategy'] ?? 'write-once'; unset( $value['_mw-strategy'] ); } if ( $strategy === 'union' ) { foreach ( $value as $item ) { $metadata->appendJsConfigVar( $key, $item ); } } else { $metadata->setJsConfigVar( $key, $value ); } } foreach ( ( $data['externallinks'] ?? [] ) as $url ) { $metadata->addExternalLink( $url ); } foreach ( ( $data['properties'] ?? [] ) as $name => $value ) { $metadata->setPageProperty( $name, $value ); } } /* @inheritDoc / public function parseWikitext( PageConfig $pageConfig, ContentMetadataCollector $metadata, string $wikitext ): string { $revid = $pageConfig->getRevisionId(); $key = implode( ':', [ 'parse', md5( $pageConfig->getTitle() ), md5( $wikitext ), $revid ] ); $data = $this->getCache( $key ); if ( $data === null ) { $params = [ 'action' => 'parse', 'title' => $pageConfig->getTitle(), 'text' => $wikitext, 'contentmodel' => 'wikitext', 'prop' => 'text\|modules\|jsconfigvars\|categories\|properties\|externallinks', 'disablelimitreport' => 1, 'wrapoutputclass' => '', 'showstrategykeys' => 1, ]; if ( $revid !== null ) { $params['revid'] = $revid; } $data = $this->api->makeRequest( $params )['parse']; $this->setCache( $key, $data ); } $this->mergeMetadata( $data, $metadata ); return $data['text']; # HTML } /* @inheritDoc / public function preprocessWikitext( PageConfig $pageConfig, ContentMetadataCollector $metadata, string $wikitext ): string { $revid = $pageConfig->getRevisionId(); $key = implode( ':', [ 'preprocess', md5( $pageConfig->getTitle() ), md5( $wikitext ), $revid ] ); $data = $this->getCache( $key ); if ( $data === null ) { $params = [ 'action' => 'expandtemplates', 'title' => $pageConfig->getTitle(), 'text' => $wikitext, 'prop' => 'wikitext\|modules\|jsconfigvars\|categories\|properties', 'showstrategykeys' => 1, ]; if ( $revid !== null ) { $params['revid'] = $revid; } $data = $this->api->makeRequest( $params )['expandtemplates']; $this->setCache( $key, $data ); } $this->mergeMetadata( $data, $metadata ); return $data['wikitext']; } /* @inheritDoc / public function fetchTemplateSource( PageConfig $pageConfig, string $title ): ?PageContent { $key = implode( ':', [ 'content', md5( $title ) ] ); $ret = $this->getCache( $key ); if ( $ret === null ) { $params = [ 'action' => 'query', 'prop' => 'revisions', 'rvprop' => 'content', 'rvslots' => '', 'titles' => $title, 'rvlimit' => 1, ]; $data = $this->api->makeRequest( $params ); $pageData = $data['query']['pages'][0]; if ( isset( $pageData['missing'] ) ) { return null; } else { $ret = $pageData['revisions'][0]['slots']; // PORT-FIXME set the redirect field if needed $this->setCache( $key, $ret ); } } return new MockPageContent( $ret ); } /** @inheritDoc / public function fetchTemplateData( PageConfig $pageConfig, string $title ): ?array { $key = implode( ':', [ 'templatedata', md5( $title ) ] ); $ret = $this->getCache( $key ); if ( $ret === null ) { $data = $this->api->makeRequest( [ 'action' => 'templatedata', 'includeMissingTitles' => 1, 'titles' => $title, 'redirects' => 1, ] )['pages']; $ret = reset( $data ); $this->setCache( $key, $ret ); } return $ret; } /* @inheritDoc / public function logLinterData( PageConfig $pageConfig, array $lints ): void { foreach ( $lints as $l ) { error_log( PHPUtils::jsonEncode( $l ) ); } } /* * @param array $parsoidSettings * @return DataAccess */ public static function fromSettings( array $parsoidSettings ): DataAccess { $api = ApiHelper::fromSettings( $parsoidSettings ); return new DataAccess( $api, null, [] ); } }

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