mirror of
https://github.com/crskycode/GARbro.git
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291 lines
11 KiB
C#
291 lines
11 KiB
C#
//! \file ArcHXP.cs
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//! \date Sun Nov 08 18:04:58 2015
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//! \brief SH System resource archive.
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//
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// Copyright (C) 2015 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 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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using GameRes.Utility;
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using System.Text;
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namespace GameRes.Formats.SHSystem
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{
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[Export(typeof(ArchiveFormat))]
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public class Him4Opener : ArchiveFormat
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{
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public override string Tag { get { return "HIM4"; } }
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public override string Description { get { return "SH System engine resource archive"; } }
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public override uint Signature { get { return 0x346D6948; } } // 'Him4'
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public override bool IsHierarchic { get { return false; } }
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public override bool CanWrite { get { return false; } }
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public Him4Opener ()
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{
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Signatures = new uint[] { 0x346D6948, 0x36534853 }; // 'Him4', 'SHS6'
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Extensions = new string[] { "hxp" };
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}
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public override ArcFile TryOpen (ArcView file)
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{
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int count = file.View.ReadInt32 (4);
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if (!IsSaneCount (count))
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return null;
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long next_offset = file.View.ReadUInt32 (8);
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uint index_offset = 0xC;
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var dir = new List<Entry> (count);
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for (int i = 0; i < count; ++i)
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{
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if (next_offset > file.MaxOffset)
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return null;
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var entry = new PackedEntry {
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Name = i.ToString ("D5"),
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Offset = next_offset,
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};
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next_offset = i + 1 == count ? file.MaxOffset : file.View.ReadUInt32 (index_offset);
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index_offset += 4;
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entry.Size = (uint)(next_offset - entry.Offset);
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dir.Add (entry);
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}
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DetectFileTypes (file, dir);
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return new ArcFile (file, this, dir);
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}
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static protected void DetectFileTypes (ArcView file, List<Entry> dir)
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{
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byte[] signature_buffer = new byte[4];
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foreach (PackedEntry entry in dir)
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{
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uint packed_size = file.View.ReadUInt32 (entry.Offset);
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uint unpacked_size = file.View.ReadUInt32 (entry.Offset+4);
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entry.IsPacked = 0 != packed_size;
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if (!entry.IsPacked)
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packed_size = unpacked_size;
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entry.Size = packed_size;
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entry.UnpackedSize = unpacked_size;
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entry.Offset += 8;
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uint signature;
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if (entry.IsPacked)
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{
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using (var input = file.CreateStream (entry.Offset, Math.Min (packed_size, 0x20u)))
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using (var reader = new ShsCompression (input))
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{
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reader.Unpack (signature_buffer);
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signature = LittleEndian.ToUInt32 (signature_buffer, 0);
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}
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}
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else
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{
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signature = file.View.ReadUInt32 (entry.Offset);
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}
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if (0 != signature)
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{
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IResource res;
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if (0x020000 == signature || 0x0A0000 == signature)
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res = ImageFormat.Tga;
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else
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res = AutoEntry.DetectFileType (signature);
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if (res != null)
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{
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entry.Type = res.Type;
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var ext = res.Extensions.FirstOrDefault();
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if (!string.IsNullOrEmpty (ext))
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entry.Name = Path.ChangeExtension (entry.Name, ext);
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}
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}
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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 input = base.OpenEntry (arc, entry);
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var pent = entry as PackedEntry;
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if (null == pent || !pent.IsPacked)
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return input;
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var data = new byte[pent.UnpackedSize];
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using (var reader = new ShsCompression (input))
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{
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reader.Unpack (data);
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return new MemoryStream (data);
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}
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}
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}
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[Export(typeof(ArchiveFormat))]
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public class Him5Opener : Him4Opener
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{
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public override string Tag { get { return "HIM5"; } }
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public override string Description { get { return "SH System engine resource archive"; } }
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public override uint Signature { get { return 0x356D6948; } } // 'Him5'
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public override bool IsHierarchic { get { return false; } }
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public override bool CanWrite { get { return false; } }
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public Him5Opener ()
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{
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Signatures = new uint[] { 0x356D6948, 0x37534853 }; // 'Him5', 'SHS7'
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Extensions = new string[] { "hxp" };
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}
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public override ArcFile TryOpen (ArcView file)
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{
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int version = file.View.ReadByte (3) - '0';
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int count = file.View.ReadInt32 (4);
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if (!IsSaneCount (count))
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return null;
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var index = ReadIndex (file, 8, count);
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var dir = new List<Entry>();
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foreach (var section in index)
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{
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int index_offset = section.Item1;
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for (int section_size = section.Item2; section_size > 0; )
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{
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int entry_size = file.View.ReadByte (index_offset);
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if (entry_size < 5)
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break;
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var entry = new PackedEntry {
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Offset = Binary.BigEndian (file.View.ReadUInt32 (index_offset+1)),
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Name = file.View.ReadString (index_offset+5, (uint)entry_size-5),
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};
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if (entry.Offset > file.MaxOffset)
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return null;
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index_offset += entry_size;
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section_size -= entry_size;
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dir.Add (entry);
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}
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}
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DetectFileTypes (file, dir);
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return new ArcFile (file, this, dir);
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}
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internal static List<Tuple<int, int>> ReadIndex (ArcView file, uint index_offset, int count)
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{
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var index = new List<Tuple<int, int>> (count);
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for (int i = 0; i < count; ++i)
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{
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int size = file.View.ReadInt32 (index_offset);
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int offset = file.View.ReadInt32 (index_offset+4);
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index_offset += 8;
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if (size != 0)
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index.Add (Tuple.Create (offset, size));
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}
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return index;
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}
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}
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internal class ShsCompression : IDisposable
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{
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BinaryReader m_input;
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public ShsCompression (Stream input, bool leave_open = false)
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{
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m_input = new BinaryReader (input, Encoding.UTF8, leave_open);
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}
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public int Unpack (byte[] output)
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{
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int dst = 0;
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while (dst < output.Length)
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{
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int count;
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int ctl = m_input.ReadByte();
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if (ctl < 32)
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{
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switch (ctl)
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{
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case 0x1D:
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count = m_input.ReadByte() + 0x1E;
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break;
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case 0x1E:
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count = Binary.BigEndian (m_input.ReadUInt16()) + 0x11E;
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break;
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case 0x1F:
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count = Binary.BigEndian (m_input.ReadInt32());
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break;
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default:
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count = ctl + 1;
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break;
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}
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count = Math.Min (count, output.Length - dst);
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m_input.Read (output, dst, count);
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}
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else
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{
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int offset;
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if (0 == (ctl & 0x80))
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{
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if (0x20 == (ctl & 0x60))
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{
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offset = (ctl >> 2) & 7;
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count = ctl & 3;
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}
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else
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{
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offset = m_input.ReadByte();
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if (0x40 == (ctl & 0x60))
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count = (ctl & 0x1F) + 4;
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else
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{
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offset |= (ctl & 0x1F) << 8;
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ctl = m_input.ReadByte();
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if (0xFE == ctl)
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count = Binary.BigEndian (m_input.ReadUInt16()) + 0x102;
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else if (0xFF == ctl)
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count = Binary.BigEndian (m_input.ReadInt32());
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else
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count = ctl + 4;
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}
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}
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}
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else
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{
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count = (ctl >> 5) & 3;
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offset = ((ctl & 0x1F) << 8) | m_input.ReadByte();
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}
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count += 3;
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offset++;
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count = Math.Min (count, output.Length-dst);
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Binary.CopyOverlapped (output, dst-offset, dst, count);
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}
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dst += count;
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}
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return dst;
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}
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#region IDisposable Members
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bool m_disposed = false;
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public void Dispose ()
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{
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if (!m_disposed)
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{
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m_input.Dispose();
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m_disposed = true;
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}
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}
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#endregion
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}
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}
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