GARbro-mirror/ArcFormats/ArcMBL.cs

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//! \file ArcMBL.cs
//! \date Fri Mar 27 23:11:19 2015
//! \brief Marble Engine archive 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 System.Linq;
using GameRes.Utility;
namespace GameRes.Formats.Marble
{
[Export(typeof(ArchiveFormat))]
public class MblOpener : ArchiveFormat
{
public override string Tag { get { return "MBL"; } }
public override string Description { get { return "Marble engine resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt32 (0);
if (count <= 0 || count > 0xfffff)
return null;
ArcFile arc = null;
uint filename_len = file.View.ReadUInt32 (4);
if (filename_len > 0 && filename_len <= 0xff)
arc = ReadIndex (file, count, filename_len, 8);
if (null == arc)
arc = ReadIndex (file, count, 0x10, 4);
if (null == arc)
arc = ReadIndex (file, count, 0x38, 4);
return arc;
}
private ArcFile ReadIndex (ArcView file, int count, uint filename_len, uint index_offset)
{
uint index_size = (8u + filename_len) * (uint)count;
if (index_size > file.View.Reserve (index_offset, index_size))
return null;
try
{
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
string name = file.View.ReadString (index_offset, filename_len);
if (0 == name.Length)
return null;
if (filename_len-name.Length > 1)
{
string ext = file.View.ReadString (index_offset+name.Length+1, filename_len-(uint)name.Length-1);
if (0 != ext.Length)
name = Path.ChangeExtension (name, ext);
}
name = name.ToLowerInvariant();
index_offset += (uint)filename_len;
uint offset = file.View.ReadUInt32 (index_offset);
var entry = new AutoEntry (name, () => {
uint signature = file.View.ReadUInt32 (offset);
var res = FormatCatalog.Instance.LookupSignature (signature);
if (!res.Any() && 0x4259 == (0xffff & signature))
res = FormatCatalog.Instance.ImageFormats.Where (x => x.Tag == "PRS");
return res.FirstOrDefault();
});
entry.Offset = offset;
entry.Size = file.View.ReadUInt32 (index_offset+4);
if (offset < index_size || !entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 8;
}
if (0 == dir.Count)
return null;
return new ArcFile (file, this, dir);
}
catch
{
return null;
}
}
}
}