Merge FileFormats dll into Game and reorganise namespaces.

OpenRA.Game/Support/Log.cs

@@ -0,0 +1,76 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+
+namespace OpenRA
+{
+	public struct ChannelInfo
+	{
+		public string Filename;
+		public StreamWriter Writer;
+	}
+
+	public static class Log
+	{
+		static string LogPathPrefix = Environment.GetFolderPath(Environment.SpecialFolder.Personal) + Path.DirectorySeparatorChar;
+		public static readonly Dictionary<string, ChannelInfo> Channels = new Dictionary<string, ChannelInfo>();
+
+		public static string LogPath
+		{
+			get { return LogPathPrefix; }
+			set
+			{
+				LogPathPrefix = value;
+				Directory.CreateDirectory(LogPathPrefix);
+			}
+		}
+
+		static IEnumerable<string> FilenamesForChannel(string channelName, string baseFilename)
+		{
+			for(var i = 0;; i++ )
+				yield return Path.Combine(LogPathPrefix,
+					i > 0 ? "{0}.{1}".F(baseFilename, i) : baseFilename);
+		}
+
+		public static void AddChannel(string channelName, string baseFilename)
+		{
+			if (Channels.ContainsKey(channelName)) return;
+
+			foreach (var filename in FilenamesForChannel(channelName, baseFilename))
+				try
+				{
+					var writer = File.CreateText(filename);
+					writer.AutoFlush = true;
+
+					Channels.Add(channelName,
+						new ChannelInfo()
+						{
+							Filename = filename,
+							Writer = writer
+						});
+
+					return;
+				}
+				catch (IOException) { }
+		}
+
+		public static void Write(string channel, string format, params object[] args)
+		{
+			ChannelInfo info;
+			if (!Channels.TryGetValue(channel, out info))
+				throw new Exception("Tried logging to non-existant channel " + channel);
+
+			info.Writer.WriteLine(format, args);
+		}
+	}
+}