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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace MediaWiki\Extension\Translate\TranslatorInterface\Aid; |
| 5 | |
| 6 | use Content; |
| 7 | use ContentHandler; |
| 8 | use MediaWiki\Extension\Translate\MessageGroupProcessing\RevTagStore; |
| 9 | use MediaWiki\Extension\Translate\MessageLoading\MessageHandle; |
| 10 | use MediaWiki\Extension\Translate\TranslatorInterface\TranslationHelperException; |
| 11 | use MediaWiki\MediaWikiServices; |
| 12 | use MediaWiki\Revision\RevisionRecord; |
| 13 | use MediaWiki\Revision\SlotRecord; |
| 14 | use MessageGroup; |
| 15 | use TextContent; |
| 16 | use Wikimedia\Rdbms\IDatabase; |
| 17 | |
| 18 | /** |
| 19 | * @author Niklas Laxström |
| 20 | * @license GPL-2.0-or-later |
| 21 | * @since 2018.01 |
| 22 | */ |
| 23 | class TranslationAidDataProvider { |
| 24 | /** @var MessageHandle */ |
| 25 | private $handle; |
| 26 | /** @var MessageGroup */ |
| 27 | private $group; |
| 28 | /** @var string|null */ |
| 29 | private $definition; |
| 30 | /** @var array */ |
| 31 | private $translations; |
| 32 | |
| 33 | public function __construct( MessageHandle $handle ) { |
| 34 | $this->handle = $handle; |
| 35 | $this->group = $handle->getGroup(); |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Get the message definition. Cached for performance. |
| 40 | * @return string |
| 41 | */ |
| 42 | public function getDefinition(): string { |
| 43 | if ( $this->definition !== null ) { |
| 44 | return $this->definition; |
| 45 | } |
| 46 | |
| 47 | // Optional performance optimization |
| 48 | if ( method_exists( $this->group, 'getMessageContent' ) ) { |
| 49 | // @phan-suppress-next-line PhanUndeclaredMethod |
| 50 | $this->definition = $this->group->getMessageContent( $this->handle ); |
| 51 | } else { |
| 52 | $this->definition = $this->group->getMessage( |
| 53 | $this->handle->getKey(), |
| 54 | $this->group->getSourceLanguage() |
| 55 | ); |
| 56 | } |
| 57 | |
| 58 | if ( $this->definition === null ) { |
| 59 | throw new TranslationHelperException( |
| 60 | 'Did not find message definition for ' . $this->handle->getTitle()->getPrefixedText() . |
| 61 | ' in group ' . $this->group->getId() |
| 62 | ); |
| 63 | } |
| 64 | return $this->definition; |
| 65 | } |
| 66 | |
| 67 | public function hasDefinition(): bool { |
| 68 | try { |
| 69 | $this->getDefinition(); |
| 70 | return true; |
| 71 | } catch ( TranslationHelperException $e ) { |
| 72 | return false; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | public function getDefinitionContent(): Content { |
| 77 | return ContentHandler::makeContent( $this->getDefinition(), $this->handle->getTitle() ); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Get the translations in all languages. Cached for performance. |
| 82 | * Fuzzy translation are not included. |
| 83 | * @return array Language code => Translation |
| 84 | */ |
| 85 | public function getGoodTranslations(): array { |
| 86 | if ( $this->translations !== null ) { |
| 87 | return $this->translations; |
| 88 | } |
| 89 | |
| 90 | $mwServices = MediaWikiServices::getInstance(); |
| 91 | $data = self::loadTranslationData( |
| 92 | $mwServices->getDBLoadBalancer()->getConnection( DB_REPLICA ), |
| 93 | $this->handle |
| 94 | ); |
| 95 | $translations = []; |
| 96 | $prefixLength = strlen( $this->handle->getTitleForBase()->getDBkey() . '/' ); |
| 97 | $languageNameUtils = $mwServices->getLanguageNameUtils(); |
| 98 | |
| 99 | foreach ( $data as $page => $translation ) { |
| 100 | // Could use MessageHandle here, but that queries the message index. |
| 101 | // Instead, we can get away with simple string manipulation. |
| 102 | $code = substr( $page, $prefixLength ); |
| 103 | if ( !$languageNameUtils->isKnownLanguageTag( $code ) ) { |
| 104 | continue; |
| 105 | } |
| 106 | |
| 107 | $translations[ $code ] = $translation; |
| 108 | } |
| 109 | |
| 110 | $this->translations = $translations; |
| 111 | |
| 112 | return $translations; |
| 113 | } |
| 114 | |
| 115 | private static function loadTranslationData( IDatabase $db, MessageHandle $handle ): array { |
| 116 | $revisionStore = MediaWikiServices::getInstance()->getRevisionStore(); |
| 117 | $queryInfo = $revisionStore->getQueryInfo( [ 'page' ] ); |
| 118 | $conds = []; |
| 119 | |
| 120 | // The list of pages we want to select, and their latest versions |
| 121 | $conds['page_namespace'] = $handle->getTitle()->getNamespace(); |
| 122 | $base = $handle->getKey(); |
| 123 | $conds[] = 'page_title ' . $db->buildLike( "$base/", $db->anyString() ); |
| 124 | $conds[] = 'rev_id=page_latest'; |
| 125 | |
| 126 | // For fuzzy tags we need the join with revtag and also: |
| 127 | $conds[ 'rt_type' ] = null; |
| 128 | |
| 129 | // TODO Migrate to RevisionStore::newSelectQueryBuilder once we support >= 1.41 |
| 130 | $rows = $db->newSelectQueryBuilder() |
| 131 | ->tables( $queryInfo[ 'tables' ] ) |
| 132 | ->fields( $queryInfo[ 'fields' ] ) |
| 133 | ->leftJoin( 'revtag', null, [ |
| 134 | 'page_id=rt_page', |
| 135 | 'page_latest=rt_revision', |
| 136 | 'rt_type' => RevTagStore::FUZZY_TAG |
| 137 | ] ) |
| 138 | ->where( $conds ) |
| 139 | ->joinConds( $queryInfo[ 'joins' ] ) |
| 140 | ->caller( __METHOD__ ) |
| 141 | ->fetchResultSet(); |
| 142 | |
| 143 | $pages = []; |
| 144 | $revisions = $revisionStore->newRevisionsFromBatch( $rows, [ 'slots' => [ SlotRecord::MAIN ] ] ) |
| 145 | ->getValue(); |
| 146 | foreach ( $rows as $row ) { |
| 147 | /** @var RevisionRecord|null $rev */ |
| 148 | $rev = $revisions[$row->rev_id]; |
| 149 | if ( $rev && $rev->getContent( SlotRecord::MAIN ) instanceof TextContent ) { |
| 150 | $pages[$row->page_title] = $rev->getContent( SlotRecord::MAIN )->getText(); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | return $pages; |
| 155 | } |
| 156 | } |