Refactored the filename cache into standalone abstract class which can be implemented using different backends

Signed-off-by: Diederik de Groot <ddegroot@talon.nl>

lib/utils.php

@@ -50,4 +50,19 @@ function parse_ini_file_multi($file, $process_sections = false, $scanner_mode =
 	}
 	return $data;
 }
+
+function log_debug($message) {
+	global $logger;
+	$logger->log('LOG_DEBUG', $message);
+}
+
+function log_error($message) {
+	global $logger;
+	$logger->log('LOG_ERROR', $message);
+}
+
+function log_error_and_throw($message) {
+	log_error($message);
+	throw new Exception($message);
+}
 ?>