Added Zip support to installer source actions.

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

@@ -0,0 +1,59 @@
+#region Copyright & License Information
+/*
+ * Copyright (c) The OpenRA Developers and Contributors
+ * 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 ICSharpCode.SharpZipLib.Zip;
+using OpenRA.Mods.Common.Widgets.Logic;
+using FS = OpenRA.FileSystem.FileSystem;
+
+namespace OpenRA.Mods.Common.Installer
+{
+	public class ExtractZipSourceAction : ISourceAction
+	{
+		public void RunActionOnSource(MiniYaml actionYaml, string path, ModData modData, List<string> extracted,
+			Action<string> updateMessage)
+		{
+			var zipPath = actionYaml.Value.StartsWith("^")
+				? Platform.ResolvePath(actionYaml.Value)
+				: FS.ResolveCaseInsensitivePath(Path.Combine(path, actionYaml.Value));
+
+			using (var zipFile = new ZipFile(File.OpenRead(zipPath)))
+			{
+				foreach (var node in actionYaml.Nodes)
+				{
+					var targetPath = Platform.ResolvePath(node.Key);
+					var sourcePath = node.Value.Value;
+					var displayFilename = Path.GetFileName(targetPath);
+
+					if (File.Exists(targetPath))
+					{
+						Log.Write("install", "Skipping installed file " + targetPath);
+						continue;
+					}
+
+					Log.Write("install", $"Extracting {sourcePath} -> {targetPath}");
+
+					Directory.CreateDirectory(Path.GetDirectoryName(targetPath));
+
+					var sourceStream = zipFile.GetInputStream(zipFile.GetEntry(sourcePath));
+					using (var targetStream = File.OpenWrite(targetPath))
+						sourceStream.CopyTo(targetStream);
+
+					updateMessage(modData.Translation.GetString(InstallFromSourceLogic.ExtractingProgress, Translation.Arguments("filename", displayFilename, "progress", 100)));
+
+					extracted.Add(targetPath);
+				}
+			}
+		}
+	}
+}