CamelCase for FileSystem folder

OpenRA.FileFormats/FileSystem/InstallShieldPackage.cs

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+#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;
+using System.Linq;
+
+namespace OpenRA.FileFormats
+{
+	public class InstallShieldPackage : IFolder
+	{
+		readonly Dictionary<uint, PackageEntry> index = new Dictionary<uint, PackageEntry>();
+		readonly List<string> filenames;
+		readonly Stream s;
+		readonly long dataStart = 255;
+		readonly int priority;
+		readonly string filename;
+
+		public InstallShieldPackage(string filename, int priority)
+		{
+			this.filename = filename;
+			this.priority = priority;
+			filenames = new List<string>();
+			s = FileSystem.Open(filename);
+
+			// Parse package header
+			BinaryReader reader = new BinaryReader(s);
+			uint signature = reader.ReadUInt32();
+			if (signature != 0x8C655D13)
+				throw new InvalidDataException("Not an Installshield package");
+
+			reader.ReadBytes(8);
+			/*var FileCount = */reader.ReadUInt16();
+			reader.ReadBytes(4);
+			/*var ArchiveSize = */reader.ReadUInt32();
+			reader.ReadBytes(19);
+			var TOCAddress = reader.ReadInt32();
+			reader.ReadBytes(4);
+			var DirCount = reader.ReadUInt16();
+
+			// Parse the directory list
+			s.Seek(TOCAddress, SeekOrigin.Begin);
+			BinaryReader TOCreader = new BinaryReader(s);
+
+			var fileCountInDirs = new List<uint>();
+			// Parse directories
+			for (var i = 0; i < DirCount; i++)
+				fileCountInDirs.Add(ParseDirectory(TOCreader));
+
+			// Parse files
+			foreach (var fileCount in fileCountInDirs)
+				for (var i = 0; i < fileCount; i++)
+					ParseFile(reader);
+
+		}
+
+		uint ParseDirectory(BinaryReader reader)
+		{
+			// Parse directory header
+			var FileCount = reader.ReadUInt16();
+			var ChunkSize = reader.ReadUInt16();
+			var NameLength = reader.ReadUInt16();
+			reader.ReadChars(NameLength); //var DirName = new String(reader.ReadChars(NameLength));
+
+			// Skip to the end of the chunk
+			reader.ReadBytes(ChunkSize - NameLength - 6);
+			return FileCount;
+		}
+
+		uint AccumulatedData = 0;
+		void ParseFile(BinaryReader reader)
+		{
+			reader.ReadBytes(7);
+			var CompressedSize = reader.ReadUInt32();
+			reader.ReadBytes(12);
+			var ChunkSize = reader.ReadUInt16();
+			reader.ReadBytes(4);
+			var NameLength = reader.ReadByte();
+			var FileName = new String(reader.ReadChars(NameLength));
+
+			var hash = PackageEntry.HashFilename(FileName, PackageHashType.Classic);
+			if (!index.ContainsKey(hash))
+				index.Add(hash, new PackageEntry(hash,AccumulatedData, CompressedSize));
+			filenames.Add(FileName);
+			AccumulatedData += CompressedSize;
+
+			// Skip to the end of the chunk
+			reader.ReadBytes(ChunkSize - NameLength - 30);
+		}
+
+		public Stream GetContent(uint hash)
+		{
+			PackageEntry e;
+			if (!index.TryGetValue(hash, out e))
+				return null;
+
+			s.Seek(dataStart + e.Offset, SeekOrigin.Begin);
+			var data = new byte[e.Length];
+			s.Read(data, 0, (int)e.Length);
+
+			return new MemoryStream(Blast.Decompress(data));
+		}
+
+		public Stream GetContent(string filename)
+		{
+			return GetContent(PackageEntry.HashFilename(filename, PackageHashType.Classic));
+		}
+
+		public IEnumerable<uint> ClassicHashes()
+		{
+			return index.Keys;
+		}
+
+		public IEnumerable<uint> CrcHashes()
+		{
+			yield break;
+		}
+
+		public IEnumerable<string> AllFileNames()
+		{
+			return filenames;
+		}
+
+		public bool Exists(string filename)
+		{
+			return index.ContainsKey(PackageEntry.HashFilename(filename, PackageHashType.Classic));
+		}
+
+		public int Priority { get { return 2000 + priority; }}
+		public string Name { get { return filename; } }
+
+		public void Write(Dictionary<string, byte[]> contents)
+		{
+			throw new NotImplementedException("Cannot save InstallShieldPackages.");
+		}
+	}
+}