1 files changed, 207 insertions, 0 deletions
diff --git a/www/wiki/extensions/Translate/ttmserver/TTMServer.php b/www/wiki/extensions/Translate/ttmserver/TTMServer.php
new file mode 100644
index 00000000..2a7f0900
--- /dev/null
+++ b/www/wiki/extensions/Translate/ttmserver/TTMServer.php
@@ -0,0 +1,207 @@
+<?php
+/**
+ * TTMServer - The Translate extension translation memory interface
+ *
+ * @file
+ * @author Niklas Laxström
+ * @license GPL-2.0-or-later
+ * @defgroup TTMServer The Translate extension translation memory interface
+ */
+
+/**
+ * Some general static methods for instantiating TTMServer and helpers.
+ * @since 2012-01-28
+ * Rewritten in 2012-06-27.
+ * @ingroup TTMServer
+ */
+class TTMServer {
+	/** @var array */
+	protected $config;
+
+	/**
+	 * @param array $config
+	 */
+	protected function __construct( array $config ) {
+		$this->config = $config;
+	}
+
+	/**
+	 * @param array $config
+	 * @return TTMServer|null
+	 * @throws MWException
+	 */
+	public static function factory( array $config ) {
+		if ( isset( $config['class'] ) ) {
+			$class = $config['class'];
+
+			return new $class( $config );
+		} elseif ( isset( $config['type'] ) ) {
+			$type = $config['type'];
+			switch ( $type ) {
+				case 'ttmserver':
+					return new DatabaseTTMServer( $config );
+				case 'remote-ttmserver':
+					return new RemoteTTMServer( $config );
+				default:
+					return null;
+			}
+		}
+
+		throw new MWException( 'TTMServer with no type' );
+	}
+
+	/**
+	 * Returns the primary server instance, useful for chaining.
+	 * Primary instance is defined by $wgTranslateTranslationDefaultService
+	 * which is a key to $wgTranslateTranslationServices.
+	 * @return WritableTTMServer
+	 */
+	public static function primary() {
+		global $wgTranslateTranslationServices,
+			$wgTranslateTranslationDefaultService;
+		if ( isset( $wgTranslateTranslationServices[$wgTranslateTranslationDefaultService] ) ) {
+			$obj = self::factory( $wgTranslateTranslationServices[$wgTranslateTranslationDefaultService] );
+			if ( $obj instanceof WritableTTMServer ) {
+				return $obj;
+			}
+		}
+
+		return new FakeTTMServer();
+	}
+
+	/**
+	 * @param array[] $suggestions
+	 * @return array[]
+	 */
+	public static function sortSuggestions( array $suggestions ) {
+		usort( $suggestions, [ __CLASS__, 'qualitySort' ] );
+
+		return $suggestions;
+	}
+
+	/**
+	 * @param array $a
+	 * @param array $b
+	 * @return int
+	 */
+	protected static function qualitySort( $a, $b ) {
+		list( $c, $d ) = [ $a['quality'], $b['quality'] ];
+		if ( $c === $d ) {
+			return 0;
+		}
+
+		// Descending sort
+		return ( $c > $d ) ? -1 : 1;
+	}
+
+	/**
+	 * PHP implementation of Levenshtein edit distance algorithm.
+	 * Uses the native PHP implementation when possible for speed.
+	 * The native levenshtein is limited to 255 bytes.
+	 *
+	 * @param string $str1
+	 * @param string $str2
+	 * @param int $length1
+	 * @param int $length2
+	 * @return int
+	 */
+	public static function levenshtein( $str1, $str2, $length1, $length2 ) {
+		if ( $length1 === 0 ) {
+			return $length2;
+		}
+		if ( $length2 === 0 ) {
+			return $length1;
+		}
+		if ( $str1 === $str2 ) {
+			return 0;
+		}
+
+		$bytelength1 = strlen( $str1 );
+		$bytelength2 = strlen( $str2 );
+		if ( $bytelength1 === $length1 && $bytelength1 <= 255
+			&& $bytelength2 === $length2 && $bytelength2 <= 255
+		) {
+			return levenshtein( $str1, $str2 );
+		}
+
+		$prevRow = range( 0, $length2 );
+		for ( $i = 0; $i < $length1; $i++ ) {
+			$currentRow = [];
+			$currentRow[0] = $i + 1;
+			$c1 = mb_substr( $str1, $i, 1 );
+			for ( $j = 0; $j < $length2; $j++ ) {
+				$c2 = mb_substr( $str2, $j, 1 );
+				$insertions = $prevRow[$j + 1] + 1;
+				$deletions = $currentRow[$j] + 1;
+				$substitutions = $prevRow[$j] + ( ( $c1 !== $c2 ) ? 1 : 0 );
+				$currentRow[] = min( $insertions, $deletions, $substitutions );
+			}
+			$prevRow = $currentRow;
+		}
+
+		return $prevRow[$length2];
+	}
+
+	/**
+	 * Hook: ArticleDeleteComplete
+	 * @param WikiPage $wikipage
+	 */
+	public static function onDelete( WikiPage $wikipage ) {
+		$handle = new MessageHandle( $wikipage->getTitle() );
+		$job = TTMServerMessageUpdateJob::newJob( $handle, 'delete' );
+		JobQueueGroup::singleton()->push( $job );
+	}
+
+	/**
+	 * Called from TranslateEditAddons::onSave
+	 * @param MessageHandle $handle
+	 */
+	public static function onChange( MessageHandle $handle ) {
+		$job = TTMServerMessageUpdateJob::newJob( $handle, 'refresh' );
+		JobQueueGroup::singleton()->push( $job );
+	}
+
+	/**
+	 * @param MessageHandle $handle
+	 * @param array $old
+	 */
+	public static function onGroupChange( MessageHandle $handle, $old ) {
+		if ( $old === [] ) {
+			// Don't bother for newly added messages
+			return;
+		}
+
+		$job = TTMServerMessageUpdateJob::newJob( $handle, 'rebuild' );
+		JobQueueGroup::singleton()->push( $job );
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getMirrors() {
+		global $wgTranslateTranslationServices;
+		if ( isset( $this->config['mirrors'] ) ) {
+			$mirrors = [];
+			foreach ( $this->config['mirrors'] as $name ) {
+				if ( !is_string( $name ) ) {
+					throw new TTMServerException( "Invalid configuration set in " .
+						"mirrors, expected an array of strings" );
+				}
+				if ( !isset( $wgTranslateTranslationServices[$name] ) ) {
+					throw new TTMServerException( "Invalid configuration in " .
+						"mirrors, unknown service $name" );
+				}
+				$mirrors[$name] = true;
+			}
+			return array_keys( $mirrors );
+		}
+		return [];
+	}
+
+	/**
+	 * @return bool
+	 */
+	public function isFrozen() {
+		return false;
+	}
+}