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(Experimental): limited support of EXE file resources.
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morkt
184
Experimental/Microsoft/ArcEXE.cs
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184
Experimental/Microsoft/ArcEXE.cs
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//! \file ArcEXE.cs
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//! \date 2023 Aug 24
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//! \brief Access portable executable (PE) resources.
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//
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// Copyright (C) 2023 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using GameRes.Utility;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.IO;
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using System.Linq;
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namespace GameRes.Formats.Microsoft
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{
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[Export(typeof(ArchiveFormat))]
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public class ExeOpener : ArchiveFormat
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{
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public override string Tag { get => "EXE"; }
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public override string Description { get => "Windows executable resources"; }
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public override uint Signature { get => 0; }
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public override bool IsHierarchic { get => true; }
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public override bool CanWrite { get => false; }
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public ExeOpener ()
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{
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Extensions = new[] { "exe",/* "dll"*/ };
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}
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static readonly Dictionary<string, string> RuntimeTypeMap = new Dictionary<string, string>() {
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{ "#2", "RT_BITMAP" },
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{ "#10", "RT_RCDATA" },
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};
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static readonly Dictionary<string, string> ExtensionTypeMap = new Dictionary<string, string>() {
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{ "PNG", ".PNG" },
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{ "WAVE", ".WAV" },
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{ "MIDS", ".MID" },
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{ "SCR", ".BIN" },
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{ "#2", ".BMP" },
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{ "#10", ".BIN" },
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};
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public override ArcFile TryOpen (ArcView file)
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{
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if (!file.View.AsciiEqual (0, "MZ") || VFS.IsVirtual)
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return null;
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var res = new ExeFile.ResourceAccessor (file.Name);
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try
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{
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var dir = new List<Entry>();
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foreach (var type in res.EnumTypes())
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{
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string dir_name = type;
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if (type.StartsWith ("#") && !RuntimeTypeMap.TryGetValue (type, out dir_name))
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continue;
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string ext;
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if (!ExtensionTypeMap.TryGetValue (type, out ext))
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ext = "";
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foreach (var name in res.EnumNames (type))
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{
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string full_name = name;
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if (name.StartsWith ("#"))
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full_name = IdToString (name);
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full_name = string.Join ("/", dir_name, full_name) + ext;
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var entry = Create<ResourceEntry> (full_name);
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entry.NativeName = name;
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entry.NativeType = type;
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entry.Offset = 0;
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entry.Size = res.GetResourceSize (name, type);
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dir.Add (entry);
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}
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}
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if (0 == dir.Count)
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{
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res.Dispose();
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return null;
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}
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return new ResourcesArchive (file, this, dir, res);
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}
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catch
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{
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res.Dispose();
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throw;
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}
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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var rarc = (ResourcesArchive)arc;
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var rent = (ResourceEntry)entry;
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var data = rarc.Accessor.GetResource (rent.NativeName, rent.NativeType);
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if (null == data)
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return Stream.Null;
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return new BinMemoryStream (data, rent.Name);
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}
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public override IImageDecoder OpenImage (ArcFile arc, Entry entry)
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{
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var rent = (ResourceEntry)entry;
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if (rent.NativeType != "#2")
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return base.OpenImage (arc, entry);
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var rarc = (ResourcesArchive)arc;
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var bitmap = new byte[14 + entry.Size];
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int length = rarc.Accessor.ReadResource (rent.NativeName, rent.NativeType, bitmap, 14);
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length += 14;
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bitmap[0] = (byte)'B';
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bitmap[1] = (byte)'M';
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LittleEndian.Pack (length, bitmap, 2);
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int bits_length = bitmap.ToInt32 (0x22);
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int bits_pos = length - bits_length;
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if (bits_length == 0)
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bits_pos = bitmap.ToInt32 (14) + 22;
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LittleEndian.Pack (bits_pos, bitmap, 10);
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var bm = new BinMemoryStream (bitmap, 0, length, entry.Name);
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var info = ImageFormat.Bmp.ReadMetaData (bm);
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if (null == info)
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{
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bm.Dispose();
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throw new InvalidFormatException ("Invalid bitmap resource.");
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}
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bm.Position = 0;
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return new ImageFormatDecoder (bm, ImageFormat.Bmp, info);
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}
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internal static string IdToString (string id)
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{
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if (id.Length > 1 && id[0] == '#' && char.IsDigit (id[1]))
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id = id.Substring (1).PadLeft (5, '0');
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return id;
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}
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}
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internal class ResourceEntry : Entry
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{
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public string NativeName;
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public string NativeType;
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}
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internal class ResourcesArchive : ArcFile
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{
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public readonly ExeFile.ResourceAccessor Accessor;
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public ResourcesArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, ExeFile.ResourceAccessor acc)
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: base (arc, impl, dir)
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{
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Accessor = acc;
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}
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#region IDisposable Members
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bool _acc_disposed = false;
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protected override void Dispose (bool disposing)
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{
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if (_acc_disposed)
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return;
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if (disposing)
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Accessor.Dispose();
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_acc_disposed = true;
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base.Dispose (disposing);
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}
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#endregion
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}
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}
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