GARbro-mirror/ArcFormats/Ffa/ArcBlackPackage.cs

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//! \file ArcBlackPackage.cs
//! \date Wed Apr 15 14:58:52 2015
//! \brief Black Package archive format.
//
// 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.Compression;
using GameRes.Utility;
namespace GameRes.Formats.Ffa
{
[Export(typeof(ArchiveFormat))]
public class DatOpener : ArchiveFormat
{
public override string Tag { get { return "FFA/DAT"; } }
public override string Description { get { return "FFA System resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
public DatOpener ()
{
Extensions = new string[] { "dat" };
}
public override ArcFile TryOpen (ArcView file)
{
string lst_name = Path.ChangeExtension (file.Name, ".lst");
if (lst_name == file.Name)
return null;
var lst_info = new FileInfo (lst_name);
if (!lst_info.Exists)
return null;
int count = (int)(lst_info.Length/0x16);
if (count > 0xffff || count*0x16 != lst_info.Length)
return null;
using (var lst = new ArcView (lst_name))
{
var dir = new List<Entry> (count);
uint index_offset = 0;
for (int i = 0; i < count; ++i)
{
string name = lst.View.ReadString (index_offset, 14);
var entry = FormatCatalog.Instance.Create<Entry> (name);
entry.Offset = lst.View.ReadUInt32 (index_offset+14);
entry.Size = lst.View.ReadUInt32 (index_offset+18);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 0x16;
}
return new ArcFile (file, this, dir);
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var input = arc.File.CreateStream (entry.Offset, entry.Size);
if (entry.Size <= 8 || !entry.Name.EndsWith (".so4", StringComparison.InvariantCultureIgnoreCase))
return input;
using (var header = new ArcView.Reader (input))
{
int packed = header.ReadInt32();
int unpacked = header.ReadInt32();
if (packed+8 != entry.Size || packed <= 0 || unpacked <= 0)
return input;
using (input)
using (var reader = new LzssReader (input, packed, unpacked))
{
reader.Unpack();
return new MemoryStream (reader.Data);
}
}
}
}
}