Replaced hardcoded source actions by user defined ISourceAction.

OpenRA.Mods.Common/Installer/SourceActions/ExtractMscabSourceAction.cs

@@ -0,0 +1,54 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2022 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, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using OpenRA.Mods.Common.FileFormats;
+using OpenRA.Mods.Common.Widgets.Logic;
+using FS = OpenRA.FileSystem.FileSystem;
+
+namespace OpenRA.Mods.Common.Installer
+{
+	public class ExtractMscabSourceAction : ISourceAction
+	{
+		public void RunActionOnSource(MiniYaml actionYaml, string path, ModData modData, List<string> extracted, Action<string> updateMessage)
+		{
+			// Yaml path may be specified relative to a named directory (e.g. ^SupportDir) or the detected source path
+			var sourcePath = actionYaml.Value.StartsWith("^") ? Platform.ResolvePath(actionYaml.Value) : FS.ResolveCaseInsensitivePath(Path.Combine(path, actionYaml.Value));
+
+			using (var source = File.OpenRead(sourcePath))
+			{
+				var reader = new MSCabCompression(source);
+				foreach (var node in actionYaml.Nodes)
+				{
+					var targetPath = Platform.ResolvePath(node.Key);
+
+					if (File.Exists(targetPath))
+					{
+						Log.Write("install", "Skipping installed file " + targetPath);
+						continue;
+					}
+
+					extracted.Add(targetPath);
+					Directory.CreateDirectory(Path.GetDirectoryName(targetPath));
+					using (var target = File.OpenWrite(targetPath))
+					{
+						Log.Write("install", $"Extracting {sourcePath} -> {targetPath}");
+						var displayFilename = Path.GetFileName(Path.GetFileName(targetPath));
+						Action<int> onProgress = percent => updateMessage(modData.Translation.GetString(InstallFromDiscLogic.ExtracingProgress, Translation.Arguments("filename", displayFilename, "progress", percent)));
+						reader.ExtractFile(node.Value.Value, target, onProgress);
+					}
+				}
+			}
+		}
+	}
+}