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mirror of https://github.com/crskycode/GARbro.git synced 2024-12-22 19:04:12 +08:00

100 lines
4.1 KiB
C#

//! \file ArcXPK.cs
//! \date 2017 Dec 05
//! \brief KAG System resource archive.
//
// Copyright (C) 2017 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.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Text;
using GameRes.Compression;
using GameRes.Utility;
namespace GameRes.Formats.KiriKiri
{
[Export(typeof(ArchiveFormat))]
public class XpkOpener : ArchiveFormat
{
public override string Tag { get { return "XPK"; } }
public override string Description { get { return "KAG System resource archive"; } }
public override uint Signature { get { return 0x314B5058; } } // 'XPK1'
public override bool IsHierarchic { get { return true; } }
public override bool CanWrite { get { return false; } }
public XpkOpener ()
{
Signatures = new uint[] { 0x314B5058, 0 };
}
static readonly byte[] SignatureBytes = Encoding.ASCII.GetBytes ("XPK1\x1A");
public override ArcFile TryOpen (ArcView file)
{
long base_offset = 0;
if (0x5A4D == file.View.ReadUInt16 (0)) // 'MZ'
base_offset = Xp3Opener.SkipExeHeader (file, SignatureBytes);
if (!file.View.BytesEqual (base_offset, SignatureBytes))
return null;
using (var index = file.CreateStream())
{
index.Position = base_offset+10;
int count = (int)ReadUInt (index);
if (!IsSaneCount (count))
return null;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
long offset = ReadUInt (index) + base_offset;
uint size = ReadUInt (index);
uint unpacked_size = ReadUInt (index);
index.ReadInt16();
var name = index.ReadCString();
var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
entry.Offset = offset;
entry.Size = size;
entry.UnpackedSize = unpacked_size;
if (!entry.CheckPlacement (file.MaxOffset) && !(offset == file.MaxOffset && size == 0))
return null;
dir.Add (entry);
}
return new ArcFile (file, this, dir);
}
}
internal static uint ReadUInt (IBinaryStream input)
{
if (input.ReadByte() != 4)
throw new InvalidFormatException();
return Binary.BigEndian (input.ReadUInt32());
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
PackedEntry packed_entry = entry as PackedEntry;
if (null == packed_entry || packed_entry.Size == packed_entry.UnpackedSize)
return arc.File.CreateStream (entry.Offset, entry.Size);
return new ZLibStream (arc.File.CreateStream (entry.Offset, entry.Size), CompressionMode.Decompress);
}
}
}