From 73f16aff26b071337f8b2102bf00dd293c85f0ef Mon Sep 17 00:00:00 2001 From: Crsky Date: Sun, 18 Dec 2022 03:27:19 +0800 Subject: [PATCH] (Kaguya): implemented AF01 archive. --- ArcFormats/ArcFormats.csproj | 1 + ArcFormats/Kaguya/ArcAF.cs | 133 +++++++++++++++++++++++++++++++++++ 2 files changed, 134 insertions(+) create mode 100644 ArcFormats/Kaguya/ArcAF.cs diff --git a/ArcFormats/ArcFormats.csproj b/ArcFormats/ArcFormats.csproj index d33b9bc9..b9fafad6 100644 --- a/ArcFormats/ArcFormats.csproj +++ b/ArcFormats/ArcFormats.csproj @@ -228,6 +228,7 @@ + diff --git a/ArcFormats/Kaguya/ArcAF.cs b/ArcFormats/Kaguya/ArcAF.cs new file mode 100644 index 00000000..780304dd --- /dev/null +++ b/ArcFormats/Kaguya/ArcAF.cs @@ -0,0 +1,133 @@ +//! \file ArcAF.cs +//! \date Sun Apr 02 09:01:51 2017 +//! \brief Atelier Kaguya resource archive. +// +// Copyright (C) 2017 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.Kaguya +{ + [Export(typeof(ArchiveFormat))] + public class AfOpener : ArchiveFormat + { + public override string Tag { get { return "ARC/AF01"; } } + public override string Description { get { return "Atelier Kaguya resource archive"; } } + public override uint Signature { get { return 0x31304641; } } // 'AF01' + public override bool IsHierarchic { get { return true; } } + public override bool CanWrite { get { return false; } } + + const int MaxFileNameLength = 0x100; + + public override ArcFile TryOpen (ArcView file) + { + uint index_offset = file.View.ReadUInt32 (8); + if (index_offset >= file.MaxOffset - 8) + return null; + using (var index = file.CreateStream (index_offset + 8)) + { + long data_offset = 12; + var name_buffer = new byte[MaxFileNameLength]; + var dir = new List(); + while (index.PeekByte() != -1) + { + int name_length = index.ReadInt32(); + if (name_length <= 0 || name_length > name_buffer.Length) + return null; + if (name_length != index.Read (name_buffer, 0, name_length)) + return null; + var name = DecryptString (name_buffer, name_length); + name = name.TrimStart ('\\', '/'); + var entry = FormatCatalog.Instance.Create (name); + int flags = index.ReadInt16(); + entry.IsPacked = 1 == flags; + data_offset += 4 + name_length + 6; + if (entry.IsPacked) + data_offset += 4; + entry.Offset = data_offset; + entry.Size = index.ReadUInt32(); + entry.UnpackedSize = index.ReadUInt32(); + if (!entry.IsPacked) + entry.Size = entry.UnpackedSize; + if (!entry.CheckPlacement (file.MaxOffset)) + return null; + dir.Add (entry); + data_offset += entry.Size; + } + return new ArcFile (file, this, dir); + } + } + + public override Stream OpenEntry (ArcFile arc, Entry entry) + { + var pent = entry as PackedEntry; + if (null == pent || !pent.IsPacked) + return arc.File.CreateStream (entry.Offset, entry.Size); + using (var input = arc.File.CreateStream (entry.Offset, entry.Size)) + { + var output = new byte[pent.UnpackedSize]; + LzUnpack (input, output); + return new BinMemoryStream (output); + } + } + + string DecryptString (byte[] name, int length) + { + for (int i = 0; i < length; ++i) + name[i] ^= 0xFF; + return Encodings.cp932.GetString (name, 0, length); + } + + void LzUnpack (Stream input, byte[] output) + { + var frame = new byte[0x1000]; + int frame_pos = 1; + int dst = 0; + using (var bits = new MsbBitStream (input)) + { + while (dst < output.Length) + { + if (0 != bits.GetNextBit ()) + { + byte b = (byte)bits.GetBits (8); + output[dst++] = b; + frame[frame_pos++ & 0xFFF] = b; + } + else + { + int offset = bits.GetBits (12); + int count = bits.GetBits (4) + 2; + for (int i = 0; i < count; ++i) + { + byte b = frame[(offset + i) & 0xFFF]; + output[dst++] = b; + frame[frame_pos++ & 0xFFF] = b; + } + } + } + } + } + } +}