GARbro-mirror/Legacy/DigitalMonkey/ArcDM.cs

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2018-10-07 12:59:21 +08:00
//! \file ArcDM.cs
//! \date 2018 Oct 07
//! \brief Digital Monkey resource archive.
//
// Copyright (C) 2018 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.DigitalMonkey
{
[Export(typeof(ArchiveFormat))]
public class DmOpener : ArchiveFormat
{
public override string Tag { get { return "DM"; } }
public override string Description { get { return "Digital Monkey 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 (".dm"))
return null;
int count = file.View.ReadInt32 (0);
if (!IsSaneCount (count))
return null;
var arc_name = Path.GetFileNameWithoutExtension (file.Name).ToLowerInvariant();
string type = arc_name == "image" ? "image"
: arc_name == "sound" ? "audio" : "";
uint index_offset = 4;
uint data_offset = 4 + (uint)count * 0x2C;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var name = file.View.ReadString (index_offset, 0x20);
if (string.IsNullOrWhiteSpace (name))
return null;
var entry = new PackedEntry {
Name = name,
Type = type,
UnpackedSize = file.View.ReadUInt32 (index_offset+0x20),
Size = file.View.ReadUInt32 (index_offset+0x24),
Offset = file.View.ReadUInt32 (index_offset+0x28),
IsPacked = true,
};
if (entry.Offset < data_offset || !entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 0x2C;
}
return new ArcFile (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var pent = (PackedEntry)entry;
if (null == pent || !pent.IsPacked)
return base.OpenEntry (arc, entry);
var input = arc.File.CreateStream (entry.Offset, entry.Size);
return new ZLibStream (input, CompressionMode.Decompress);
}
}
}