log to file if daemon only

Daemon.cpp

@@ -66,15 +66,20 @@ namespace i2p
 		{
 			// initialize log			
 			if (isLogging)
+			{
+				if (isDaemon)
 				{
 					std::string logfile_path = i2p::util::filesystem::GetDataDir().string();
-#ifndef _WIN32
+	#ifndef _WIN32
 					logfile_path.append("/debug.log");
-#else
+	#else
 					logfile_path.append("\\debug.log");
-#endif
+	#endif
 					StartLog (logfile_path);
 				}
+				else
+					StartLog (""); // write to stdout
+			}
 
 			d.httpServer = new i2p::util::HTTPServer(i2p::util::config::GetArg("-httpport", 7070));
 			d.httpServer->Start();

Log.h

@@ -44,6 +44,7 @@ inline void StartLog (const std::string& fullFilePath)
 	if (!g_Log)
 	{	
 		g_Log = new Log ();
+		if (fullFilePath.length () > 0)
 			g_Log->SetLogFile (fullFilePath);
 	}	
 }