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TranslationAidDataProvider.php
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TranslationAidDataProvider.php
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<?php
declare( strict_types = 1 );
namespace MediaWiki\Extension\Translate\TranslatorInterface\Aid;
use InvalidArgumentException;
use MediaWiki\Content\Content;
use MediaWiki\Content\ContentHandler;
use MediaWiki\Content\TextContent;
use MediaWiki\Extension\Translate\MessageGroupProcessing\RevTagStore;
use MediaWiki\Extension\Translate\MessageLoading\MessageHandle;
use MediaWiki\Extension\Translate\TranslatorInterface\TranslationHelperException;
use MediaWiki\MediaWikiServices;
use MediaWiki\Revision\SlotRecord;
use MessageGroup;
use Wikimedia\Rdbms\IDatabase;
/**
* @author Niklas Laxström
* @license GPL-2.0-or-later
* @since 2018.01
*/
class TranslationAidDataProvider {
/** @var MessageHandle */
private $handle;
/** @var MessageGroup */
private $group;
/** @var string|null */
private $definition;
/** @var array */
private $translations;
public function __construct( MessageHandle $handle ) {
$this->handle = $handle;
$group = $handle->getGroup();
if ( !$group ) {
throw new InvalidArgumentException(
'Message handle ' . $handle->getTitle()->getPrefixedDbKey() . ' has no associated group'
);
}
$this->group = $group;
}
/**
* Get the message definition. Cached for performance.
* @return string
*/
public function getDefinition(): string {
if ( $this->definition !== null ) {
return $this->definition;
}
// Optional performance optimization
if ( method_exists( $this->group, 'getMessageContent' ) ) {
// @phan-suppress-next-line PhanUndeclaredMethod
$this->definition = $this->group->getMessageContent( $this->handle );
} else {
$this->definition = $this->group->getMessage(
$this->handle->getKey(),
$this->group->getSourceLanguage()
);
}
if ( $this->definition === null ) {
throw new TranslationHelperException(
'Did not find message definition for ' . $this->handle->getTitle()->getPrefixedText() .
' in group ' . $this->group->getId()
);
}
return $this->definition;
}
public function hasDefinition(): bool {
try {
$this->getDefinition();
return true;
} catch ( TranslationHelperException ) {
return false;
}
}
public function getDefinitionContent(): Content {
return ContentHandler::makeContent( $this->getDefinition(), $this->handle->getTitle() );
}
/**
* Get the translations in all languages. Cached for performance.
* Fuzzy translation are not included.
* @return array Language code => Translation
*/
public function getGoodTranslations(): array {
if ( $this->translations !== null ) {
return $this->translations;
}
$mwServices = MediaWikiServices::getInstance();
$data = self::loadTranslationData(
$mwServices->getDBLoadBalancer()->getConnection( DB_REPLICA ),
$this->handle
);
$translations = [];
$prefixLength = strlen( $this->handle->getTitleForBase()->getDBkey() . '/' );
$languageNameUtils = $mwServices->getLanguageNameUtils();
foreach ( $data as $page => $translation ) {
// Could use MessageHandle here, but that queries the message index.
// Instead, we can get away with simple string manipulation.
$code = substr( $page, $prefixLength );
if ( !$languageNameUtils->isKnownLanguageTag( $code ) ) {
continue;
}
$translations[ $code ] = $translation;
}
$this->translations = $translations;
return $translations;
}
private static function loadTranslationData( IDatabase $db, MessageHandle $handle ): array {
$revisionStore = MediaWikiServices::getInstance()->getRevisionStore();
$conditions = [];
// The list of pages we want to select, and their latest versions
$conditions['page_namespace'] = $handle->getTitle()->getNamespace();
$base = $handle->getKey();
$conditions[] = 'page_title ' . $db->buildLike( "$base/", $db->anyString() );
$conditions[] = 'rev_id=page_latest';
// For fuzzy tags we need the join with revtag and also:
$conditions[ 'rt_type' ] = null;
$rows = $revisionStore->newSelectQueryBuilder( $db )
->joinPage()
->joinComment()
->leftJoin( 'revtag', null, [
'page_id=rt_page',
'page_latest=rt_revision',
'rt_type' => RevTagStore::FUZZY_TAG
] )
->where( $conditions )
->caller( __METHOD__ )
->fetchResultSet();
$pages = [];
$revisions = $revisionStore->newRevisionsFromBatch( $rows, [ 'slots' => [ SlotRecord::MAIN ] ] )
->getValue();
foreach ( $rows as $row ) {
$content = $revisions[$row->rev_id]?->getContent( SlotRecord::MAIN );
if ( $content instanceof TextContent ) {
$pages[$row->page_title] = $content->getText();
}
}
return $pages;
}
}

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TranslationAidDataProvider.php (4 KB)

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