1 files changed, 185 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/Lang/JsonContentsFileReader.php b/www/wiki/extensions/SemanticMediaWiki/src/Lang/JsonContentsFileReader.php
new file mode 100644
index 00000000..18755f60
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/Lang/JsonContentsFileReader.php
@@ -0,0 +1,185 @@
+<?php
+
+namespace SMW\Lang;
+
+use Onoi\Cache\Cache;
+use Onoi\Cache\NullCache;
+use RuntimeException;
+use SMW\Utils\ErrorCodeFormatter;
+
+/**
+ * @license GNU GPL v2+
+ * @since 2.5
+ *
+ * @author mwjames
+ */
+class JsonContentsFileReader {
+
+	/**
+	 * @var array
+	 */
+	private static $contents = [];
+
+	/**
+	 * @var string
+	 */
+	private $languageFileDir = '';
+
+	/**
+	 * @var Cache
+	 */
+	private $cache;
+
+	/**
+	 * @var boolean
+	 */
+	private $skipCache = false;
+
+	/**
+	 * @var integer
+	 */
+	private $ttl = 604800; // 7 * 24 * 3600
+
+	/**
+	 * @since 2.5
+	 *
+	 * @param Cache|null $cache
+	 * @param string $languageFileDir
+	 */
+	public function __construct( Cache $cache = null, $languageFileDir = '' ) {
+		$this->cache = $cache;
+		$this->languageFileDir = $languageFileDir;
+
+		if ( $this->cache === null ) {
+			$this->cache = new NullCache();
+		}
+
+		if ( $this->languageFileDir === '' ) {
+			$this->languageFileDir = $GLOBALS['smwgExtraneousLanguageFileDir'];
+		}
+	}
+
+	/**
+	 * @since 2.5
+	 */
+	public static function clear() {
+		self::$contents = [];
+	}
+
+	/**
+	 * @since 2.5
+	 */
+	public function skipCache() {
+		$this->skipCache = true;
+	}
+
+	/**
+	 * @since 1.2.0
+	 *
+	 * @return integer
+	 */
+	public function getFileModificationTime( $languageCode ) {
+		return filemtime( $this->getLanguageFile( $languageCode ) );
+	}
+
+	/**
+	 * @since 2.5
+	 *
+	 * @param string $languageCode
+	 * @param boolean $readFromFile
+	 *
+	 * @return boolean
+	 */
+	public function canReadByLanguageCode( $languageCode ) {
+
+		$canReadByLanguageCode = '';
+
+		try {
+			$canReadByLanguageCode = $this->getLanguageFile( $languageCode );
+		} catch ( \Exception $e ) {
+			$canReadByLanguageCode = '';
+		}
+
+		return $canReadByLanguageCode !== '';
+	}
+
+	/**
+	 * @since 2.5
+	 *
+	 * @param string $languageCode
+	 * @param array $contents
+	 */
+	public function writeByLanguageCode( $languageCode, $contents ) {
+
+		$languageCode = strtolower( trim( $languageCode ) );
+
+		file_put_contents(
+			$this->getLanguageFile( $languageCode ),
+			json_encode( $contents, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE )
+		);
+	}
+
+	/**
+	 * @since 2.5
+	 *
+	 * @param string $languageCode
+	 * @param boolean $readFromFile
+	 *
+	 * @return array
+	 * @throws RuntimeException
+	 */
+	public function readByLanguageCode( $languageCode, $readFromFile = false ) {
+
+		$languageCode = strtolower( trim( $languageCode ) );
+
+		if ( !$readFromFile && isset( self::$contents[$languageCode] ) ) {
+			return self::$contents[$languageCode];
+		}
+
+		$cacheKey = smwfCacheKey(
+			'smw:lang',
+			[
+				$languageCode,
+				$this->getFileModificationTime( $languageCode ),
+				$this->ttl
+			]
+		);
+
+		if ( !$readFromFile && !$this->skipCache && !isset( self::$contents[$languageCode] ) && $this->cache->contains( $cacheKey ) ) {
+			self::$contents[$languageCode] = $this->cache->fetch( $cacheKey );
+		}
+
+		if ( $readFromFile || !isset( self::$contents[$languageCode] ) ) {
+			self::$contents[$languageCode] = $this->readJSONFile( $languageCode, $cacheKey );
+		}
+
+		return self::$contents[$languageCode];
+	}
+
+	protected function readJSONFile( $languageCode, $cacheKey ) {
+
+		$contents = json_decode(
+			file_get_contents( $this->getLanguageFile( $languageCode ) ),
+			true
+		);
+
+		if ( $contents !== null && json_last_error() === JSON_ERROR_NONE ) {
+			$this->cache->save( $cacheKey, $contents, $this->ttl );
+			return $contents;
+		}
+
+		throw new RuntimeException( ErrorCodeFormatter::getMessageFromJsonErrorCode( json_last_error() ) );
+	}
+
+	private function getLanguageFile( $languageCode ) {
+
+		$file = str_replace( [ '\\', '/' ], DIRECTORY_SEPARATOR, $this->languageFileDir . '/' . $languageCode . '.json' );
+
+		if ( is_readable( $file ) ) {
+			return $file;
+		}
+
+		throw new RuntimeException( "Expected a {$file} file" );
+	}
+
+}