GARbro-mirror/ArcFormats/Leaf/ArcA.cs
2016-08-19 10:57:46 +04:00

87 lines
3.5 KiB
C#

//! \file ArcA.cs
//! \date Wed Aug 17 17:32:54 2016
//! \brief Leaf 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.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using GameRes.Compression;
namespace GameRes.Formats.Leaf
{
[Export(typeof(ArchiveFormat))]
public class AOpener : ArchiveFormat
{
public override string Tag { get { return "A/Leaf"; } }
public override string Description { get { return "Leaf resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
public AOpener ()
{
Extensions = new string[] { "a" };
}
public override ArcFile TryOpen (ArcView file)
{
if (0xAF1E != file.View.ReadUInt16 (0))
return null;
int count = file.View.ReadUInt16 (2);
if (!IsSaneCount (count))
return null;
long base_offset = 4 + 0x20 * count;
uint index_offset = 4;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var name = file.View.ReadString (index_offset, 0x17);
if (string.IsNullOrEmpty (name))
return null;
var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
entry.IsPacked = 0 != file.View.ReadByte (index_offset+0x17);
entry.Size = file.View.ReadUInt32 (index_offset+0x18);
entry.Offset = base_offset + file.View.ReadUInt32 (index_offset+0x1C);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 0x20;
}
return new ArcFile (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var pent = entry as PackedEntry;
if (null == pent || !pent.IsPacked)
return base.OpenEntry (arc, entry);
if (0 == pent.UnpackedSize)
pent.UnpackedSize = arc.File.View.ReadUInt32 (entry.Offset);
var input = arc.File.CreateStream (entry.Offset+4, entry.Size-4);
return new LzssStream (input);
}
}
}