Restructure displayer to have reusable stringify

--HG--
branch : qt5

code/nel/src/misc/window_displayer.cpp

@@ -68,8 +68,7 @@ bool CWindowDisplayer::update ()
 	vector<string> copy;
 	{
 		CSynchronized<std::vector<std::string> >::CAccessor access (&_CommandsToExecute);
-		copy = access.value();
-		access.value().clear ();
+		copy.swap(access.value());
 	}
 
 	// execute all commands in the main thread
@@ -116,21 +115,15 @@ void CWindowDisplayer::create (string windowNameEx, bool iconified, sint x, sint
 	_Thread->start ();
 }
 
-void CWindowDisplayer::doDisplay (const NLMISC::CLog::TDisplayInfo &args, const char *message)
+std::string CWindowDisplayer::stringifyMessage(const NLMISC::CLog::TDisplayInfo &args, const char *message, bool needSlashR)
 {
 	bool needSpace = false;
 	//stringstream ss;
 	string str;
 
-	uint32 color = 0xFF000000;
-
 	if (args.LogType != CLog::LOG_NO)
 	{
-		str += logTypeToString(args.LogType);
-		if (args.LogType == CLog::LOG_ERROR || args.LogType == CLog::LOG_ASSERT) color = 0x00FF0000;
-		else if (args.LogType == CLog::LOG_WARNING) color = 0x00800000;
-		else if (args.LogType == CLog::LOG_DEBUG) color = 0x00808080;
-		else color = 0;
+		str += CWindowDisplayer::logTypeToString(args.LogType);
 		needSpace = true;
 	}
 
@@ -200,6 +193,23 @@ void CWindowDisplayer::doDisplay (const NLMISC::CLog::TDisplayInfo &args, const
 	}
 	str += pos;
 
+	return str;
+}
+
+void CWindowDisplayer::doDisplay (const NLMISC::CLog::TDisplayInfo &args, const char *message)
+{
+	uint32 color = 0xFF000000;
+
+	if (args.LogType != CLog::LOG_NO)
+	{
+		if (args.LogType == CLog::LOG_ERROR || args.LogType == CLog::LOG_ASSERT) color = 0x00FF0000;
+		else if (args.LogType == CLog::LOG_WARNING) color = 0x00800000;
+		else if (args.LogType == CLog::LOG_DEBUG) color = 0x00808080;
+		else color = 0;
+	}
+
+	std::string str = stringifyMessage(args, message, needSlashR);
+
 	{
 		CSynchronized<std::list<std::pair<uint32, std::string> > >::CAccessor access (&_Buffer);
 		if (_HistorySize > 0 && access.value().size() >= (uint)_HistorySize)