Added IUtilityCommand and move default commands into Mods.Common.

OpenRA.Mods.Common/UtilityCommands/ExtractFilesCommand.cs

@@ -0,0 +1,41 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 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;
+using System.Linq;
+using System.Text;
+using OpenRA.FileSystem;
+
+namespace OpenRA.Mods.Common.UtilityCommands
+{
+	class ExtractFilesCommand : IUtilityCommand
+	{
+		public string Name { get { return "--extract"; } }
+
+		[Desc("Extract files from mod packages to the current directory")]
+		public void Run(ModData modData, string[] args)
+		{
+			var files = args.Skip(1);
+			GlobalFileSystem.LoadFromManifest(modData.Manifest);
+
+			foreach (var f in files)
+			{
+				var src = GlobalFileSystem.Open(f);
+				if (src == null)
+					throw new InvalidOperationException("File not found: {0}".F(f));
+				var data = src.ReadAllBytes();
+				File.WriteAllBytes(f, data);
+				Console.WriteLine(f + " saved.");
+			}
+		}
+	}
+}