GARbro-mirror/ArcFormats/Interheart/ArcFPK.cs

178 lines
6.2 KiB
C#
Raw Normal View History

2015-05-27 17:58:00 +08:00
//! \file ArcFPK.cs
//! \date Mon May 25 10:01:24 2015
//! \brief FPK resource archives implementation.
//
// 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.CandySoft
{
[Export(typeof(ArchiveFormat))]
public class FpkOpener : ArchiveFormat
{
public override string Tag { get { return "FPK"; } }
2015-08-17 11:03:15 +08:00
public override string Description { get { return "Interheart/Candy Soft resource archive"; } }
2015-05-27 17:58:00 +08:00
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt32 (0);
if (count <= 0 || count > 0xfffff)
return null;
2015-08-17 11:03:15 +08:00
List<Entry> dir = null;
try
{
dir = ReadIndex (file, count, 0x10);
}
catch { /* read failed, try another filename length */ }
if (null == dir)
dir = ReadIndex (file, count, 0x18);
if (null == dir)
return null;
return new ArcFile (file, this, dir);
}
private List<Entry> ReadIndex (ArcView file, int count, int name_size)
{
2015-05-27 17:58:00 +08:00
long index_offset = 4;
2015-08-17 11:03:15 +08:00
uint index_size = (uint)((8 + name_size) * count);
2015-05-27 17:58:00 +08:00
if (index_size > file.View.Reserve (index_offset, index_size))
return null;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
2015-08-17 11:03:15 +08:00
string name = file.View.ReadString (index_offset+8, (uint)name_size);
var entry = FormatCatalog.Instance.Create<Entry> (name);
2015-05-27 17:58:00 +08:00
entry.Offset = file.View.ReadUInt32 (index_offset);
entry.Size = file.View.ReadUInt32 (index_offset+4);
if (entry.Offset < index_size || !entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
2015-08-17 11:03:15 +08:00
index_offset += 8 + name_size;
2015-05-27 17:58:00 +08:00
}
2015-08-17 11:03:15 +08:00
return dir;
2015-05-27 17:58:00 +08:00
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var input = arc.File.CreateStream (entry.Offset, entry.Size);
if (entry.Size <= 8)
return input;
var sign = FormatCatalog.ReadSignature (input);
if (0x32434c5a != sign) // 'ZLC2'
{
input.Position = 0;
return input;
}
using (input)
using (var reader = new Zlc2Reader (input, (int)entry.Size))
{
reader.Unpack();
return new MemoryStream (reader.Data);
}
}
}
internal class Zlc2Reader : IDisposable
{
BinaryReader m_input;
byte[] m_output;
int m_size;
public byte[] Data { get { return m_output; } }
public Zlc2Reader (Stream input, int input_length)
{
input.Position = 4;
m_input = new ArcView.Reader (input);
uint output_length = m_input.ReadUInt32();
m_output = new byte[output_length];
m_size = input_length - 8;
}
public void Unpack ()
{
int remaining = m_size;
int dst = 0;
while (remaining > 0 && dst < m_output.Length)
{
int ctl = m_input.ReadByte();
remaining--;
for (int mask = 0x80; mask != 0 && remaining > 0 && dst < m_output.Length; mask >>= 1)
{
if (0 != (ctl & mask))
{
if (remaining < 2)
return;
int offset = m_input.ReadByte();
int count = m_input.ReadByte();
offset |= (count & 0xF0) << 4;
count = (count & 0x0F) + 3;
if (0 == offset)
offset = 4096;
if (dst + count > m_output.Length)
count = m_output.Length - dst;
Binary.CopyOverlapped (m_output, dst-offset, dst, count);
dst += count;
}
else
{
m_output[dst++] = m_input.ReadByte();
}
}
}
}
#region IDisposable Members
bool disposed = false;
public void Dispose ()
{
Dispose (true);
GC.SuppressFinalize (this);
}
protected virtual void Dispose (bool disposing)
{
if (!disposed)
{
if (disposing)
{
m_input.Dispose();
}
disposed = true;
}
}
#endregion
}
}