mirror of
https://github.com/crskycode/GARbro.git
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252 lines
8.9 KiB
C#
252 lines
8.9 KiB
C#
//! \file ArcBIN.cs
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//! \date 2018 Mar 05
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//! \brief UmeSoft resource archive.
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//
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// Copyright (C) 2018 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 GameRes.Utility;
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namespace GameRes.Formats.UMeSoft
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{
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[Export(typeof(ArchiveFormat))]
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public class BinOpener : ArchiveFormat
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{
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public override string Tag { get { return "BIN/UME"; } }
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public override string Description { get { return "U-Me Soft resources archive"; } }
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public override uint Signature { get { return 0; } }
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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 override ArcFile TryOpen (ArcView file)
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{
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int count = file.View.ReadInt32 (0);
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if ((count & 0xFFFF) != 0)
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return null;
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count = (count >> 16) - 1;
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if (!IsSaneCount (count))
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return null;
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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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var name = file.View.ReadUInt32 (index_offset).ToString ("D5");
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var entry = new PackedEntry {
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Name = name,
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Offset = file.View.ReadUInt32 (index_offset+4) << 11,
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Size = file.View.ReadUInt32 (index_offset+8),
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};
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if (!entry.CheckPlacement (file.MaxOffset))
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return null;
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dir.Add (entry);
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index_offset += 12;
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}
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foreach (PackedEntry entry in dir)
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{
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uint signature;
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if (entry.Size > 13 && file.View.AsciiEqual (entry.Offset+2, "ike"))
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{
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int unpacked_size = IkeReader.DecodeSize (file.View.ReadByte (entry.Offset+10),
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file.View.ReadByte (entry.Offset+11),
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file.View.ReadByte (entry.Offset+12));
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entry.IsPacked = true;
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entry.UnpackedSize = (uint)unpacked_size;
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signature = file.View.ReadUInt32 (entry.Offset+0xF);
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entry.Offset += 13;
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entry.Size -= 13;
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}
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else
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signature = file.View.ReadUInt32 (entry.Offset);
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entry.ChangeType (AutoEntry.DetectFileType (signature));
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}
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return new ArcFile (file, this, dir);
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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 pent = entry as PackedEntry;
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if (null == pent || !pent.IsPacked)
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return base.OpenEntry (arc, entry);
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using (var input = arc.File.CreateStream (entry.Offset, entry.Size))
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{
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var reader = new IkeReader (input, (int)pent.UnpackedSize);
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var data = reader.Unpack();
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return new BinMemoryStream (data, entry.Name);
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}
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}
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}
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internal class IkeReader
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{
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IBinaryStream m_input;
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byte[] m_output;
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public IkeReader (IBinaryStream input, int unpacked_size)
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{
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m_input = input;
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m_output = new byte[unpacked_size];
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}
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public static int DecodeSize (byte a, byte b, byte c)
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{
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return b + ((c + (a >> 2 << 8)) << 8);
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}
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public static IBinaryStream CreateStream (IBinaryStream input, int unpacked_size)
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{
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input.Position = 0xD;
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var ike = new IkeReader (input, unpacked_size);
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var data = ike.Unpack();
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return new BinMemoryStream (data);
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}
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public byte[] Unpack ()
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{
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m_bits = 2;
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GetBit();
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int dst = 0;
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while (dst < m_output.Length)
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{
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int offset, shift, count;
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if (GetBit() != 0)
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{
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m_output[dst++] = m_input.ReadUInt8();
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continue;
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}
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if (GetBit() != 0)
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{
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offset = m_input.ReadUInt8() | -0x100;
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shift = 0;
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if (GetBit() == 0)
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shift += 0x100;
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if (GetBit() == 0)
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{
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offset -= 0x200;
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if (GetBit() == 0)
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{
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shift <<= 1;
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if (GetBit() == 0)
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shift += 0x100;
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offset -= 0x200;
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if (GetBit() == 0)
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{
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shift <<= 1;
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if (GetBit() == 0)
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shift += 0x100;
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offset -= 0x400;
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if (GetBit() == 0)
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{
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offset -= 0x800;
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shift <<= 1;
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if (GetBit() == 0)
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shift += 0x100;
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}
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}
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}
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}
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offset -= shift;
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if (GetBit() != 0)
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{
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count = 3;
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}
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else if (GetBit() != 0)
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{
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count = 4;
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}
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else if (GetBit() != 0)
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{
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count = 5;
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}
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else if (GetBit() != 0)
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{
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count = 6;
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}
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else if (GetBit() != 0)
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{
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if (GetBit() != 0)
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count = 8;
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else
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count = 7;
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}
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else if (GetBit() != 0)
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{
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count = m_input.ReadUInt8() + 17;
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}
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else
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{
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count = 9;
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if (GetBit() != 0)
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count = 13;
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if (GetBit() != 0)
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count += 2;
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if (GetBit() != 0)
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count++;
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}
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}
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else
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{
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offset = m_input.ReadUInt8() | -0x100;
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if (GetBit() != 0)
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{
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offset -= 0x100;
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if (GetBit() == 0)
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offset -= 0x400;
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if (GetBit() == 0)
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offset -= 0x200;
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if (GetBit() == 0)
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offset -= 0x100;
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}
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else if (offset == -1)
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{
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if (GetBit() == 0)
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break;
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else
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continue;
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}
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count = 2;
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}
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count = Math.Min (count, m_output.Length - dst);
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Binary.CopyOverlapped (m_output, dst+offset, dst, count);
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dst += count;
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}
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return m_output;
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}
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int m_bits;
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int GetBit ()
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{
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int bit = m_bits & 1;
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m_bits >>= 1;
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if (1 == m_bits)
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{
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m_bits = m_input.ReadUInt16() | 0x10000;
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}
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return bit;
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}
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}
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}
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