GARbro-mirror/Legacy/Rain/ArcBIN.cs

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//! \file ArcBIN.cs
//! \date 2017 Dec 03
//! \brief Rain Software 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;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Text.RegularExpressions;
using GameRes.Compression;
namespace GameRes.Formats.Rain
{
[Export(typeof(ArchiveFormat))]
public class BinOpener : ArchiveFormat
{
public override string Tag { get { return "BIN/RAIN"; } }
public override string Description { get { return "Rain Software resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
static readonly Regex PackNameRe = new Regex (@"^pack(...)\.bin$", RegexOptions.IgnoreCase);
public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt32 (0);
bool is_compressed = 0 == (count & 0x80000000);
count &= 0x7FFFFFFF;
if (!IsSaneCount (count))
return null;
var match = PackNameRe.Match (Path.GetFileName (file.Name));
if (!match.Success)
return null;
var ext = match.Groups[1].Value;
uint index_size = (uint)count * 12;
if (index_size > file.View.Reserve (4, index_size))
return null;
uint index_offset = 4;
uint data_offset = 4 + index_size;
var dir = new List<Entry> (count);
var seen_nums = new HashSet<uint>();
for (int i = 0; i < count; ++i)
{
uint num = file.View.ReadUInt32 (index_offset);
if (num > 0xFFFFFF || !seen_nums.Add (num))
return null;
var name = string.Format ("{0:D5}.{1}", num, ext);
var entry = FormatCatalog.Instance.Create<Entry> (name);
entry.Offset = file.View.ReadUInt32 (index_offset+4);
entry.Size = file.View.ReadUInt32 (index_offset+8);
if (entry.Offset < data_offset || !entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 12;
}
return new ArcFile (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
if (!arc.File.View.AsciiEqual (entry.Offset, "SZDD"))
return base.OpenEntry (arc, entry);
var input = arc.File.CreateStream (entry.Offset+12, entry.Size-12);
var lzss = new LzssStream (input);
lzss.Config.FrameFill = 0x20;
lzss.Config.FrameInitPos = 0xFF0;
return lzss;
}
}
}