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mirror of https://github.com/crskycode/GARbro.git synced 2024-12-24 11:54:13 +08:00
2018-12-30 14:46:08 +04:00

90 lines
3.8 KiB
C#

//! \file ArcAR2.cs
//! \date 2018 Aug 06
//! \brief Script engine Kasane 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;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
// [030525][Virgin Cream] Yamai Tsuki ~Ryouki Kansen Virus~
// [030530][Mithra] Clione no Kimochi ~Oshiete, Sensei Osanazuma~
namespace GameRes.Formats.Kasane
{
[Export(typeof(ArchiveFormat))]
public class Ar2Opener : ArchiveFormat
{
public override string Tag { get { return "AR2/IDX"; } }
public override string Description { get { return "Kasane script 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 (".ar2"))
return null;
var idx_name = Path.ChangeExtension (file.Name, ".idx");
using (var idx_view = VFS.OpenView (idx_name))
using (var idx = idx_view.CreateStream())
{
int count = idx.ReadInt32();
if (!IsSaneCount (count))
return null;
var name_buffer = new byte[0x100];
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
uint size = idx.ReadUInt32();
uint unpacked_size = idx.ReadUInt32();
idx.ReadInt32();
int name_length = idx.ReadInt32();
uint offset = idx.ReadUInt32();
if (name_length > name_buffer.Length)
return null;
idx.Read (name_buffer, 0, name_length);
for (int j = 0; j < name_length; ++j)
name_buffer[j] ^= 0x55;
var name = Encodings.cp932.GetString (name_buffer, 0, name_length);
var entry = FormatCatalog.Instance.Create<Entry> (name);
entry.Offset = offset;
entry.Size = size;
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
}
return new ArcFile (file, this, dir);
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
uint name_length = arc.File.View.ReadUInt32 (entry.Offset+0xC) ^ 0x55555555u;
var input = arc.File.CreateStream (entry.Offset + 0x10 + name_length, entry.Size);
return new XoredStream (input, 0x55);
}
}
}