GARbro-mirror/ArcFormats/ArcPBX.cs
morkt f1d66206bc (IResource.CanWrite): new property.
(ArchiveFormat.CanCreate): renamed to CanWrite.
2016-10-11 00:05:22 +04:00

190 lines
7.0 KiB
C#

//! \file ArcPBX.cs
//! \date Fri Nov 27 01:33:38 2015
//! \brief Terios resource archive.
//
// Copyright (C) 2015 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;
using GameRes.Utility;
namespace GameRes.Formats.Terios
{
[Export(typeof(ArchiveFormat))]
public class PbxOpener : ArchiveFormat
{
public override string Tag { get { return "PBX"; } }
public override string Description { get { return "\"Pandora.box\" resource archive"; } }
public override uint Signature { get { return 0x646E6150; } } // 'Pand'
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public override ArcFile TryOpen (ArcView file)
{
if (!file.View.AsciiEqual (4, "ora.box\0"))
return null;
uint next_offset = file.View.ReadUInt32 (0xC);
if (next_offset > file.View.Reserve (0, next_offset))
return null;
uint index_offset = 0x10;
int count = (int)(next_offset-0x10) / 0x10;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var name = file.View.ReadString (index_offset, 0xC);
var entry = FormatCatalog.Instance.Create<Entry> (name);
entry.Offset = next_offset;
next_offset = file.View.ReadUInt32 (index_offset+0xC);
entry.Size = (uint)(next_offset - entry.Offset);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 0x10;
}
return new ArcFile (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
if (entry.Size <= 0x10 || 0x6344764D != arc.File.View.ReadUInt32 (entry.Offset))
return base.OpenEntry (arc, entry);
try
{
int unpacked_size = arc.File.View.ReadInt32 (entry.Offset+8);
using (var input = arc.File.CreateStream (entry.Offset+0x10, entry.Size-0x10))
using (var reader = new PandoraCompression (input, unpacked_size))
{
var data = reader.Unpack();
return new MemoryStream (data);
}
}
catch
{
// in case of decompression error return compressed data
return base.OpenEntry (arc, entry);
}
}
}
internal sealed class PandoraCompression : IDisposable
{
BinaryReader m_input;
byte[] m_output;
public byte[] Data { get { return m_output; } }
public PandoraCompression (Stream input, int unpacked_size)
{
m_input = new ArcView.Reader (input);
m_output = new byte[unpacked_size];
}
public byte[] Unpack ()
{
int dst = 0;
m_output[dst++] = m_input.ReadByte();
while (dst < m_output.Length)
{
int ctl = m_input.ReadByte();
int count;
if (ctl >= 0x80)
{
if (ctl >= 0xC0)
{
int offset = m_input.ReadByte();
offset += 0x101 + ((ctl & 0x3F) << 8);
offset = dst - offset;
if (offset < 0)
throw new InvalidFormatException();
m_output[dst++] = m_output[offset++];
m_output[dst++] = m_output[offset++];
m_output[dst++] = m_output[offset++];
}
else
{
if (ctl >= 0xB0)
{
count = Binary.BigEndian (m_input.ReadUInt16());
count += 0x813 + ((ctl & 7) << 16);
ctl &= 8;
}
else if (ctl >= 0xA0)
{
count = m_input.ReadByte() + ((ctl & 7) << 8) + 19;
ctl &= 8;
}
else
{
count = (ctl & 0xF) + 3;
ctl &= 0x10;
}
int offset;
if (ctl != 0)
{
offset = Binary.BigEndian (m_input.ReadUInt16()) + 0x101;
}
else
{
offset = m_input.ReadByte() + 1;
}
Binary.CopyOverlapped (m_output, dst - offset, dst, count);
dst += count;
}
}
else
{
if (ctl >= 0x60)
{
count = Binary.BigEndian (m_input.ReadUInt16());
count += 0x2041 + ((ctl & 0x1F) << 16);
}
if (ctl >= 0x40)
{
count = m_input.ReadByte() + ((ctl & 0x1F) << 8) + 0x41;
}
else
{
count = ctl + 1;
}
count = m_input.Read (m_output, dst, count);
dst += count;
}
}
return m_output;
}
#region IDisposable Members
bool _disposed = false;
public void Dispose ()
{
if (!_disposed)
{
m_input.Dispose();
_disposed = true;
}
}
#endregion
}
}