1 files changed, 122 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/tests/phpunit/Utils/File/JsonFileReader.php b/www/wiki/extensions/SemanticMediaWiki/tests/phpunit/Utils/File/JsonFileReader.php
new file mode 100644
index 00000000..dfe97b55
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/tests/phpunit/Utils/File/JsonFileReader.php
@@ -0,0 +1,122 @@
+<?php
+
+namespace SMW\Tests\Utils\File;
+
+use RuntimeException;
+
+/**
+ * @license GNU GPL v2+
+ * @since 2.1
+ *
+ * @author mwjames
+ */
+class JsonFileReader {
+
+	/**
+	 * @var string|null
+	 */
+	private $file = null;
+
+	/**
+	 * @var array|null
+	 */
+	private $contents = null;
+
+	/**
+	 * @since 2.1
+	 *
+	 * @param string|null $file
+	 */
+	public function __construct( $file = null ) {
+		$this->setFile( $file );
+	}
+
+	/**
+	 * @since 2.1
+	 *
+	 * @param string $file
+	 */
+	public function setFile( $file ) {
+		$this->file = str_replace( [ '\\', '/' ], DIRECTORY_SEPARATOR, $file );
+		$this->contents = null;
+	}
+
+	/**
+	 * @since 2.1
+	 *
+	 * @return array
+	 * @throws RuntimeException
+	 */
+	public function read() {
+
+		if ( $this->contents === null && $this->isReadable() ) {
+			$this->contents = $this->decodeJsonFileContentsToArray( $this->file );
+		}
+
+		if ( $this->contents !== null ) {
+			return $this->contents;
+		}
+
+		throw new RuntimeException( "Expected a readable {$this->file} file" );
+	}
+
+	/**
+	 * @since 2.1
+	 *
+	 * @return boolean
+	 */
+	public function isReadable() {
+		return is_file( $this->file ) && is_readable( $this->file );
+	}
+
+	/**
+	 * @since 2.1
+	 *
+	 * @return integer
+	 * @throws RuntimeException
+	 */
+	public function getModificationTime() {
+
+		if ( $this->isReadable() ) {
+			return filemtime( $this->file );
+		}
+
+		throw new RuntimeException( "Expected a readable {$this->file} file" );
+	}
+
+	private function decodeJsonFileContentsToArray( $file ) {
+
+		$json = file_get_contents( $file );
+
+		$json = preg_replace(
+			'~ ("(?:[^\\\"]+|\\\.)*") |' . // preserve strings
+			'/\* (?:[^*]+|\*+(?!/))* \*/ |' .      // strip multi-line comments
+			'//\V* ~sx',                           // strip //-comments
+			'$1', $json );
+
+		$contents = json_decode( $json, true );
+
+		if ( $contents !== null && json_last_error() === JSON_ERROR_NONE ) {
+			return $contents;
+		}
+
+		throw new RuntimeException( $this->printDescriptiveJsonError( json_last_error() ) );
+	}
+
+	private function printDescriptiveJsonError( $errorCode ) {
+
+		$errorMessages = [
+			JSON_ERROR_STATE_MISMATCH => 'Underflow or the modes mismatch, malformed JSON',
+			JSON_ERROR_CTRL_CHAR => 'Unexpected control character found, possibly incorrectly encoded',
+			JSON_ERROR_SYNTAX => 'Syntax error, malformed JSON',
+			JSON_ERROR_UTF8   => 'Malformed UTF-8 characters, possibly incorrectly encoded',
+			JSON_ERROR_DEPTH  => 'The maximum stack depth has been exceeded'
+		];
+
+		return sprintf(
+			"Expected a JSON compatible format but failed with '%s'",
+			$errorMessages[$errorCode]
+		);
+	}
+
+}