2017-09-17 07:05:41 +04:00

87 lines
3.5 KiB
C#

//! \file ArcFGA.cs
//! \date 2017 Sep 16
//! \brief SFA engine 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;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using GameRes.Utility;
namespace GameRes.Formats.Lilim
{
[Export(typeof(ArchiveFormat))]
public class FgaOpener : AosOpener
{
public override string Tag { get { return "FGA"; } }
public override string Description { get { return "SFA engine resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public override ArcFile TryOpen (ArcView file)
{
if (!file.Name.HasExtension (".fga"))
return null;
uint index_offset = 0;
var index_buffer = new byte[0x318];
var dir = new List<Entry> (0x20);
if (0x318 != file.View.Read (index_offset, index_buffer, 0, 0x318))
return null;
int pos = 0;
while (pos < index_buffer.Length)
{
if (0 == index_buffer[pos])
break;
if (0xFF == index_buffer[pos])
{
uint next_offset = index_buffer.ToUInt32 (pos+0xC);
if (next_offset <= index_offset || next_offset >= file.MaxOffset)
return null;
index_offset = next_offset;
if (0x318 != file.View.Read (index_offset, index_buffer, 0, 0x318))
return null;
pos = 0;
}
else
{
var name = Binary.GetCString (index_buffer, pos, 0xC);
var entry = FormatCatalog.Instance.Create<AosEntry> (name);
entry.Offset = index_buffer.ToUInt32 (pos+0xC);
entry.Size = index_buffer.ToUInt32 (pos+0x10);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
if (name.HasExtension (".scr"))
entry.IsCompressed = true;
dir.Add (entry);
pos += 0x18;
}
}
if (0 == dir.Count)
return null;
return new ArcFile (file, this, dir);
}
}
}