GARbro-mirror/ArcFormats/MnoViolet/ArcMnoViolet.cs

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//! \file ArcMnoViolet.cs
//! \date Fri Apr 03 23:32:37 2015
//! \brief M no Violet engine archives implementation.
//
// 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.Utility;
namespace GameRes.Formats.MnoViolet
{
[Export(typeof(ArchiveFormat))]
public class DatOpener : ArchiveFormat
{
public override string Tag { get { return "MNV"; } }
public override string Description { get { return "M no Violet resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return true; } }
public override bool CanWrite { get { return false; } }
public DatOpener ()
{
Extensions = new string[] { "dat" };
}
static readonly uint[] NameSizes = { 100, 68, 44 };
static readonly Lazy<ImageFormat> s_GraFormat = new Lazy<ImageFormat> (() => ImageFormat.FindByTag ("GRA"));
public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt32 (0);
if (!IsSaneCount (count))
return null;
List<Entry> dir = null;
foreach (var name_size in NameSizes)
{
uint index_size = (uint)((name_size+8) * count);
uint first_offset = file.View.ReadUInt32 (4+name_size+4);
if (first_offset == (4 + index_size) && first_offset < file.MaxOffset)
{
if (null == dir)
dir = new List<Entry> (count);
else
dir.Clear();
long index_offset = 4;
for (int i = 0; i < count; ++i)
{
string name = file.View.ReadString (index_offset, name_size);
if (string.IsNullOrWhiteSpace (name))
goto CheckNextLength;
index_offset += name_size;
uint offset = file.View.ReadUInt32 (index_offset+4);
var entry = new AutoEntry (name, () => {
uint signature = file.View.ReadUInt32 (offset);
if (1 == signature)
return s_GraFormat.Value;
return AutoEntry.DetectFileType (signature);
});
entry.Offset = offset;
entry.Size = file.View.ReadUInt32 (index_offset);
if (offset <= index_size || !entry.CheckPlacement (file.MaxOffset))
goto CheckNextLength;
dir.Add (entry);
index_offset += 8;
}
return new ArcFile (file, this, dir);
}
CheckNextLength:
;
}
return null;
}
}
}