mirror of
https://github.com/crskycode/GARbro.git
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101 lines
4.4 KiB
C#
101 lines
4.4 KiB
C#
//! \file ArcPAC.cs
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//! \date Sun Jan 08 11:43:23 2017
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//! \brief Terios resource archive.
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//
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// Copyright (C) 2017 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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namespace GameRes.Formats.Entis
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{
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/// <summary>
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/// Archive format used in Teri☆Mix
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/// </summary>
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[Export(typeof(ArchiveFormat))]
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public class PacOpener : ArchiveFormat
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{
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public override string Tag { get { return "PAC/TERIOS"; } }
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public override string Description { get { return "Terios resource archive"; } }
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public override uint Signature { get { return 0; } }
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public override bool IsHierarchic { get { return false; } }
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public override bool CanWrite { get { return false; } }
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static readonly byte[] DefaultPassword = Encodings.cp932.GetBytes ("パブロ・ディエゴ・ホセ・フランチスコ・ド・ポール・ジャン・ネボムチェーノ・クリスバン・ クリスピアノ・ド・ラ・ンチシュ・トリニダット・ルイス・イ・ピカソのシプリアーノ･サンティシマ･トリニダードは三位一体の事だったりする");
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public override ArcFile TryOpen (ArcView file)
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{
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if (!file.Name.HasExtension (".pac"))
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return null;
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uint index_offset = 0;
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var name_buf = new byte[0x18];
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var dir = new List<Entry>();
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while (index_offset < file.MaxOffset && dir.Count < 0x2000)
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{
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if (0x18 != file.View.Read (index_offset, name_buf, 0, 0x18))
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return null;
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if (0x20 == name_buf[0])
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break;
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int name_length = 0;
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for (name_length = 0; name_length < name_buf.Length; ++name_length)
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{
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if (name_buf[name_length] < 0x20)
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return null;
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else if (0x20 == name_buf[name_length])
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break;
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}
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if (name_buf.Length == name_length)
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return null;
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var name = Encodings.cp932.GetString (name_buf, 0, name_length);
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var entry = FormatCatalog.Instance.Create<Entry> (name);
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index_offset += 0x18;
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entry.Offset = 0x40000 + file.View.ReadUInt32 (index_offset);
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entry.Size = file.View.ReadUInt32 (index_offset+4);
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if (!entry.CheckPlacement (file.MaxOffset))
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return null;
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dir.Add (entry);
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index_offset += 8;
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}
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if (0 == dir.Count || 0x2000 == dir.Count)
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return null;
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return new ArcFile (file, this, dir);
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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if (0 != arc.File.View.ReadByte (entry.Offset))
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return base.OpenEntry (arc, entry);
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var data = arc.File.View.ReadBytes (entry.Offset+1, entry.Size-1);
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int k = 0;
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for (int i = 0; i < data.Length; ++i)
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{
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data[i] ^= (byte)~DefaultPassword[k++];
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if (k >= DefaultPassword.Length)
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k = 0;
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}
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return new BinMemoryStream (data, entry.Name);
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}
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}
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}
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