GARbro-mirror/ArcFormats/BlackRainbow/ArcDX.cs

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//! \file ArcDX.cs
//! \date Fri Nov 18 01:03:45 2016
//! \brief DX resource archive.
//
// Copyright (C) 2016 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.BlackRainbow
{
[Export(typeof(ArchiveFormat))]
public class PackOpener : ArchiveFormat
{
public override string Tag { get { return "PACK/DX"; } }
public override string Description { get { return "DX engine resource archive"; } }
public override uint Signature { get { return 0x4B434150; } } // 'PACK'
public override bool IsHierarchic { get { return true; } }
public override bool CanWrite { get { return false; } }
public PackOpener ()
{
Extensions = new string[] { "pak" };
}
public override ArcFile TryOpen (ArcView file)
{
uint index_length = file.View.ReadUInt32 (4);
if (index_length >= file.MaxOffset)
return null;
using (var input = file.CreateStream (0, index_length))
{
var reader = new IndexReader (input, file.MaxOffset);
if (!reader.ReadDir ("", 8, index_length))
return null;
return new ArcFile (file, this, reader.Dir);
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
if (!entry.Name.HasExtension (".hse"))
return base.OpenEntry (arc, entry);
var data = arc.File.View.ReadBytes (entry.Offset, entry.Size);
for (int i = 0; i < data.Length; ++i)
data[i] = (byte)-data[i];
return new BinMemoryStream (data, entry.Name);
}
internal class IndexReader
{
IBinaryStream m_index;
long m_max_offset;
List<Entry> m_dir;
public List<Entry> Dir { get { return m_dir; } }
public IndexReader (IBinaryStream input, long max_offset)
{
m_index = input;
m_max_offset = max_offset;
m_dir = new List<Entry>();
}
public bool ReadDir (string root, uint dir_offset, uint base_offset)
{
m_index.Position = dir_offset;
int dir_count = m_index.ReadInt32();
dir_offset += 4;
for (int i = 0; i < dir_count; ++i)
{
var name = m_index.ReadCString (0x20);
uint offset = m_index.ReadUInt32();
uint data_offset = m_index.ReadUInt32();
if (offset <= dir_offset || offset > m_index.Length || data_offset > m_max_offset)
return false;
if (!ReadDir (Path.Combine (root, name), offset, data_offset))
return false;
dir_offset += 0x28;
m_index.Position = dir_offset;
}
int count = m_index.ReadInt32();
if (0 == count)
return true;
if (!IsSaneCount (count))
return false;
for (int i = 0; i < count; ++i)
{
var name = m_index.ReadCString (0x20);
name = Path.Combine (root, name);
var entry = FormatCatalog.Instance.Create<Entry> (name);
entry.Offset = m_index.ReadUInt32() + base_offset;
entry.Size = m_index.ReadUInt32();
if (!entry.CheckPlacement (m_max_offset))
return false;
if (name.HasExtension (".hse"))
entry.Type = "image";
m_dir.Add (entry);
}
return true;
}
}
}
}