From f8a8b4b27af0ce1e81df0117c8679dea61f92e8c Mon Sep 17 00:00:00 2001 From: morkt Date: Tue, 11 Sep 2018 17:46:15 +0400 Subject: [PATCH] implemented 'GML_ARC' archives. --- ArcFormats/ArcFormats.csproj | 1 + ArcFormats/GLib/ArcG.cs | 156 +++++++++++++++++++++++++++++++++++ 2 files changed, 157 insertions(+) create mode 100644 ArcFormats/GLib/ArcG.cs diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj index 6b5328ab..1a8a7365 100644 --- a/ArcFormats/ArcFormats.csproj +++ b/ArcFormats/ArcFormats.csproj @@ -166,6 +166,7 @@ + diff --git a/ArcFormats/GLib/ArcG.cs b/ArcFormats/GLib/ArcG.cs new file mode 100644 index 00000000..045b6f66 --- /dev/null +++ b/ArcFormats/GLib/ArcG.cs @@ -0,0 +1,156 @@ +//! \file ArcG.cs +//! \date 2018 Jul 10 +//! \brief GLib engine resource archive. +// +// Copyright (C) 2018 by morkt +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to +// deal in the Software without restriction, including without limitation the +// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +// sell copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS +// IN THE SOFTWARE. +// + +using System; +using System.Collections.Generic; +using System.ComponentModel.Composition; +using System.IO; + +namespace GameRes.Formats.GLib +{ + internal class GmlArchive : ArcFile + { + public readonly byte[] Key; + + public GmlArchive (ArcView arc, ArchiveFormat impl, ICollection dir, byte[] key) + : base (arc, impl, dir) + { + Key = key; + } + } + + internal class GmlEntry : Entry + { + public byte[] Header; + } + + [Export(typeof(ArchiveFormat))] + public class GOpener : ArchiveFormat + { + public override string Tag { get { return "G/GML"; } } + public override string Description { get { return "GLib engine resource archive"; } } + public override uint Signature { get { return 0x5F4C4D47; } } // 'GML_' + public override bool IsHierarchic { get { return true; } } + public override bool CanWrite { get { return false; } } + + public GOpener () + { + Extensions = new string[] { "g", "xp" }; + } + + public override ArcFile TryOpen (ArcView file) + { + if (!file.View.AsciiEqual (4, "ARC\0")) + return null; + uint data_offset = file.View.ReadUInt32 (8); + uint unpacked_size = file.View.ReadUInt32 (0xC); + uint packed_size = file.View.ReadUInt32 (0x10); + byte[] unpacked = new byte[unpacked_size]; + using (var packed = file.CreateStream (0x14, packed_size)) + using (var input = new XoredStream (packed, 0xFF)) + { + LzssUnpack (input, unpacked); + } + using (var index = new BinMemoryStream (unpacked)) + { + var key = index.ReadBytes (256); + int count = index.ReadInt32(); + if (!IsSaneCount (count)) + return null; + var dir = new List (count); + for (int i = 0; i < count; ++i) + { + int name_length = index.ReadInt32(); + var name = index.ReadCString (name_length); + var entry = FormatCatalog.Instance.Create (name); + entry.Offset = index.ReadUInt32() + data_offset; + entry.Size = index.ReadUInt32(); + if (!entry.CheckPlacement (file.MaxOffset)) + return null; + dir.Add (entry); + entry.Header = index.ReadBytes (4); + } + return new GmlArchive (file, this, dir, key); + } + } + + public override Stream OpenEntry (ArcFile arc, Entry entry) + { + var garc = arc as GmlArchive; + var gent = entry as GmlEntry; + if (null == garc || null == gent) + return base.OpenEntry (arc, entry); + var data = garc.File.View.ReadBytes (entry.Offset, entry.Size); + for (int i = gent.Header.Length; i < data.Length; ++i) + data[i] = garc.Key[data[i]]; + Buffer.BlockCopy (gent.Header, 0, data, 0, gent.Header.Length); + return new BinMemoryStream (data, entry.Name); + } + + internal static void LzssUnpack (Stream input, byte[] output) + { + const int frame_mask = 0xFFF; + byte[] frame = new byte[0x1000]; + int frame_pos = 0xFEE; + int dst = 0; + int ctl = 2; + while (dst < output.Length) + { + ctl >>= 1; + if (1 == ctl) + { + ctl = input.ReadByte(); + if (-1 == ctl) + break; + ctl |= 0x100; + } + if (0 != (ctl & 1)) + { + int b = input.ReadByte(); + if (-1 == b) + break; + output[dst++] = frame[frame_pos++ & frame_mask] = (byte)b; + } + else + { + int lo = input.ReadByte(); + if (-1 == lo) + break; + int hi = input.ReadByte(); + if (-1 == hi) + break; + int offset = (hi & 0xf0) << 4 | lo; + int count = Math.Min ((~hi & 0xF) + 3, output.Length-dst); + while (count --> 0) + { + byte v = frame[offset++ & frame_mask]; + frame[frame_pos++ & frame_mask] = v; + output[dst++] = v; + } + } + } + } + } +}