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102 lines
4.3 KiB
C#
102 lines
4.3 KiB
C#
//! \file ArcPAK.cs
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//! \date Sat Jun 25 21:39:46 2016
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//! \brief Black Rainbow resource archive.
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//
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// Copyright (C) 2016 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.IO;
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using System.Text;
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using GameRes.Compression;
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namespace GameRes.Formats.BlackRainbow
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{
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[Export(typeof(ArchiveFormat))]
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public class PakOpener : ArchiveFormat
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{
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public override string Tag { get { return "PAK/MELTY"; } }
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public override string Description { get { return "BlackRainbow/Melty resource archive"; } }
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public override uint Signature { get { return 0; } }
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public override bool IsHierarchic { get { return true; } }
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public override bool CanWrite { get { return false; } }
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public PakOpener ()
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{
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Extensions = new string[] { "pak" };
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}
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public override ArcFile TryOpen (ArcView file)
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{
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if (file.MaxOffset <= 8)
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return null;
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int count = file.View.ReadInt32 (file.MaxOffset-8);
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if (!IsSaneCount (count))
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return null;
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uint index_size = file.View.ReadUInt32 (file.MaxOffset-4);
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if (index_size >= file.MaxOffset-8)
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return null;
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long index_offset = file.MaxOffset - 8 - index_size;
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using (var input = file.CreateStream (index_offset, index_size))
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using (var index = new BinaryReader (input, Encoding.Unicode))
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{
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char[] name_buffer = new char[0x40];
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var dir = new List<Entry> (count);
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for (int i = 0; i < count; ++i)
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{
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uint offset = index.ReadUInt32();
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uint packed_size = index.ReadUInt32();
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uint unpacked_size = index.ReadUInt32();
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int name_length = index.ReadInt32();
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if (name_length <= 0 || name_length > 0x100 )
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return null;
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if (name_length > name_buffer.Length)
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name_buffer = new char[name_length];
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if (name_length != index.Read (name_buffer, 0, name_length))
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return null;
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var name = new string (name_buffer, 0, name_length);
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var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
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entry.Offset = offset;
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entry.Size = packed_size;
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if (!entry.CheckPlacement (file.MaxOffset))
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return null;
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entry.IsPacked = uint.MaxValue != unpacked_size;
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entry.UnpackedSize = entry.IsPacked ? unpacked_size : packed_size;
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dir.Add (entry);
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}
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return new ArcFile (file, this, dir);
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}
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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var input = arc.File.CreateStream (entry.Offset, entry.Size);
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var pent = entry as PackedEntry;
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if (null == pent || !pent.IsPacked)
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return input;
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return new ZLibStream (input, CompressionMode.Decompress);
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}
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}
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}
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