Добавлен новый модуль logger для ведения журнала.

source/ncui/lib/logger.d

@@ -0,0 +1,46 @@
+module ncui.lib.logger;
+
+import std.stdio : stderr;
+import std.logger : MultiLogger, sharedLog, FileLogger;
+public import std.logger : LogLevel,
+	trace, tracef,
+	info, infof,
+	warning, warningf,
+	error, errorf,
+	critical, criticalf,
+	fatal, fatalf;
+
+void setLogLevel(int verbose = LogLevel.all, string logfile = string.init)
+{
+	LogLevel level = LogLevel.off;
+
+	switch (verbose)
+	{
+	case 0:
+		level = LogLevel.off;
+		break;
+	case 1:
+		level = LogLevel.error;
+		break;
+	case 2:
+		level = LogLevel.warning;
+		break;
+	case 3:
+		level = LogLevel.info;
+		break;
+	case 4:
+		level = LogLevel.trace;
+		break;
+	default:
+		level = LogLevel.all;
+	}
+
+	auto multi = new MultiLogger(level);
+	sharedLog = cast(shared) multi;
+
+	if (logfile.length > 0)
+	{
+		multi.insertLogger("file", new FileLogger(logfile));
+	}
+	multi.insertLogger("stderr", new FileLogger(stderr));
+}