GARbro-mirror/ArcFormats/AdvSys/ArcGR2.cs
2018-04-01 07:55:04 +04:00

110 lines
4.2 KiB
C#

//! \file ArcGR2.cs
//! \date 2017 Dec 26
//! \brief Studio Polaris 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.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
namespace GameRes.Formats.UMeSoft
{
[Export(typeof(ArchiveFormat))]
public class Gr2Opener : ArchiveFormat
{
public override string Tag { get { return "GR2/PACK"; } }
public override string Description { get { return "Studio Polaris resource archive"; } }
public override uint Signature { get { return 0x4B434150; } } // 'PACK'
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public Gr2Opener ()
{
Extensions = new string[] { "gr2", "vic", "pac" };
}
public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt32 (4);
if (!IsSaneCount (count))
return null;
uint data_offset = file.View.ReadUInt32 (8);
if (data_offset < 0x10 || data_offset >= file.MaxOffset)
return null;
bool is_gr2 = file.Name.HasExtension ("gr2");
uint index_offset = 0x10;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var name = file.View.ReadString (index_offset, 0x10);
var entry = FormatCatalog.Instance.Create<Entry> (name);
entry.Size = file.View.ReadUInt32 (index_offset+0x10);
entry.Offset = file.View.ReadUInt32 (index_offset+0x14);
if (entry.Offset < data_offset || !entry.CheckPlacement (file.MaxOffset))
return null;
if (is_gr2)
entry.Type = "image";
dir.Add (entry);
index_offset += 0x18;
}
return new ArcFile (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
if (!arc.File.View.AsciiEqual (entry.Offset, "LL5\0"))
return base.OpenEntry (arc, entry);
using (var input = arc.File.CreateStream (entry.Offset+4, entry.Size-4))
{
var output = new MemoryStream();
LL5Decompress (input, output);
output.Position = 0;
return output;
}
}
void LL5Decompress (IBinaryStream input, Stream output)
{
var buffer = new byte[0x100];
while (input.PeekByte() != -1)
{
int count = input.ReadInt8();
if (count < 0)
{
count = -count;
input.Read (buffer, 0, count);
output.Write (buffer, 0, count);
}
else
{
byte v = input.ReadUInt8();
for (int i = 0; i < count; ++i)
buffer[i] = v;
output.Write (buffer, 0, count);
}
}
}
}
}