mirror of
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340 lines
12 KiB
C#
340 lines
12 KiB
C#
//! \file ArcDAT.cs
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//! \date Thu Jun 16 13:48:04 2016
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//! \brief Tinker Bell 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 System.Text.RegularExpressions;
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using GameRes.Compression;
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using GameRes.Formats.Properties;
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using GameRes.Formats.Strings;
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using GameRes.Utility;
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namespace GameRes.Formats.Cyberworks
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{
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internal class BellArchive : ArcFile
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{
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public readonly AImageScheme Scheme;
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public BellArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, AImageScheme scheme)
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: base (arc, impl, dir)
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{
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Scheme = scheme;
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}
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}
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[Export(typeof(ArchiveFormat))]
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public class DatOpener : ArchiveFormat
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{
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public override string Tag { get { return "ARC/Cyberworks"; } }
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public override string Description { get { return "Cyberworks/TinkerBell 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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public DatOpener ()
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{
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Extensions = new string[] { "dat", "04", "05", "06" };
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}
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static Regex s_arcname_re = new Regex (@"^.+0(?<id>(?<num>\d)(?<idx>[a-z])?)(?:|\..*)$", RegexOptions.IgnoreCase);
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static Regex s_datname_re = new Regex (@"^(?<name>d[a-z]+?)(?<idx>[ah])?\.dat$", RegexOptions.IgnoreCase);
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public override ArcFile TryOpen (ArcView file)
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{
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var arc_name = Path.GetFileName (file.Name);
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int arc_idx = 0;
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StringBuilder toc_name_builder;
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var match = s_arcname_re.Match (arc_name);
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if (match.Success)
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{
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char num = match.Groups["num"].Value[0];
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if (num < '4' || num > '6')
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return null;
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if (match.Groups["idx"].Success)
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arc_idx = char.ToUpper (match.Groups["idx"].Value[0]) - '@';
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toc_name_builder = new StringBuilder (arc_name);
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var num_pos = match.Groups["id"].Index;
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toc_name_builder.Remove (num_pos, match.Groups["id"].Length);
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toc_name_builder.Insert (num_pos, num-'3');
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}
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else if ((match = s_datname_re.Match (arc_name)).Success)
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{
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toc_name_builder = new StringBuilder (match.Groups["name"].Value);
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if (match.Groups["idx"].Success)
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{
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if ('a' == match.Groups["idx"].Value[0])
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{
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arc_idx = 1;
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toc_name_builder.Append ('h');
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}
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}
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else
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toc_name_builder.Append ('h');
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toc_name_builder.Append (".dat");
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}
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else
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return null;
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var toc_name = toc_name_builder.ToString();
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toc_name = VFS.CombinePath (VFS.GetDirectoryName (file.Name), toc_name);
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var toc = ReadToc (toc_name);
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if (null == toc)
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return null;
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int entry_size = LittleEndian.ToInt32 (toc, 0) + 4;
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if (entry_size < 0x16)
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return null;
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int count = toc.Length / entry_size;
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if (!IsSaneCount (count))
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return null;
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var type = new char[2];
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var dir = new List<Entry> (count);
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bool has_images = false;
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using (var input = new MemoryStream (toc))
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using (var index = new BinaryReader (input))
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{
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while (input.Position < input.Length)
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{
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entry_size = index.ReadInt32();
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if (entry_size <= 0)
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return null;
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var next_pos = index.BaseStream.Position + entry_size;
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uint id = index.ReadUInt32();
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var entry = new PackedEntry { Name = id.ToString ("D6") };
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entry.UnpackedSize = index.ReadUInt32();
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entry.Size = index.ReadUInt32();
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entry.IsPacked = entry.UnpackedSize != entry.Size;
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entry.Offset = index.ReadUInt32();
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type[0] = (char)index.ReadByte();
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type[1] = (char)index.ReadByte();
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int entry_idx = 0;
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if (entry_size >= 0x17)
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{
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index.ReadInt32();
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entry_idx = index.ReadByte();
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}
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if (entry_idx == arc_idx)
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{
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if (type[0] > 0x20 && type[0] < 0x7F)
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{
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string ext;
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if (type[1] > 0x20 && type[1] < 0x7F)
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ext = new string (type);
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else
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ext = new string (type[0], 1);
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if ("b0" == ext || "n0" == ext || "o0" == ext)
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{
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entry.Type = "image";
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has_images = true;
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}
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else if ("j0" == ext || "k0" == ext || "u0" == ext)
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entry.Type = "audio";
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entry.Name = Path.ChangeExtension (entry.Name, ext);
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}
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dir.Add (entry);
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}
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index.BaseStream.Position = next_pos;
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}
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}
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if (0 == dir.Count)
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return null;
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if (!has_images)
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return new ArcFile (file, this, dir);
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var scheme = QueryScheme (file.Name);
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return new BellArchive (file, this, dir, scheme);
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}
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byte[] ReadToc (string toc_name)
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{
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using (var toc_view = VFS.OpenView (toc_name))
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{
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if (toc_view.MaxOffset <= 0x10)
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return null;
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uint unpacked_size = DecodeDecimal (toc_view, 0);
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if (unpacked_size <= 4 || unpacked_size > 0x1000000)
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return null;
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uint packed_size = DecodeDecimal (toc_view, 8);
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if (packed_size > toc_view.MaxOffset - 0x10)
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return null;
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using (var toc_s = toc_view.CreateStream (0x10, packed_size))
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using (var lzss = new LzssStream (toc_s))
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{
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var toc = new byte[unpacked_size];
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if (toc.Length != lzss.Read (toc, 0, toc.Length))
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return null;
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return toc;
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}
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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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uint entry_size = entry.Size;
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Stream 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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{
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input = new LzssStream (input);
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entry_size = pent.UnpackedSize;
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}
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var barc = arc as BellArchive;
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if (null == barc)
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return input;
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try
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{
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if ("image" == entry.Type && entry_size > 5)
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return DecryptImage (input, entry_size, barc.Scheme);
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return input;
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}
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catch
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{
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input.Dispose();
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throw;
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}
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}
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Stream DecryptImage (Stream input, uint entry_size, AImageScheme scheme)
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{
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byte[] header = null;
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byte type = (byte)input.ReadByte();
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if ('c' == type || 'b' == type)
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{
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header = new byte[5];
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header[0] = type;
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input.Read (header, 1, 4);
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uint img_size = BigEndian.ToUInt32 (header, 1);
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if (entry_size - 5 == img_size)
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{
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if (input.CanSeek)
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input = new StreamRegion (input, 5, img_size);
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return input;
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}
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}
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else if (scheme != null && 'a' == type && entry_size > 21)
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{
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int id = input.ReadByte();
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if (id == scheme.Value2)
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{
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using (var reader = new AImageReader (input, scheme))
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{
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reader.Unpack();
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return TgaStream.Create (reader.Info, reader.Data, scheme.Flipped);
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}
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}
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header = new byte[2] { type, (byte)id };
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}
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if (input.CanSeek)
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{
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input.Position = 0;
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}
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else
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{
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if (null == header)
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header = new byte[1] { type };
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input = new PrefixStream (header, input);
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}
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return input;
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}
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uint DecodeDecimal (ArcView file, long offset)
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{
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uint v = 0;
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uint rank = 1;
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for (int i = 7; i >= 0; --i, rank *= 10)
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{
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uint b = file.View.ReadByte (offset+i);
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if (b != 0xFF)
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v += (b ^ 0x7F) * rank;
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}
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return v;
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}
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AImageScheme QueryScheme (string arc_name)
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{
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var title = FormatCatalog.Instance.LookupGame (arc_name);
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if (!string.IsNullOrEmpty (title) && KnownSchemes.ContainsKey (title))
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return KnownSchemes[title];
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var options = Query<BellOptions> (arcStrings.ArcEncryptedNotice);
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return options.Scheme;
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}
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public override ResourceOptions GetDefaultOptions ()
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{
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return new BellOptions { Scheme = GetScheme (Settings.Default.BELLTitle) };
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}
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public override object GetAccessWidget ()
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{
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return new GUI.WidgetBELL();
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}
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public static AImageScheme GetScheme (string title)
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{
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AImageScheme scheme = null;
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if (string.IsNullOrEmpty (title) || !KnownSchemes.TryGetValue (title, out scheme))
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return null;
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return scheme;
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}
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public static Dictionary<string, AImageScheme> KnownSchemes = new Dictionary<string, AImageScheme>();
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public override ResourceScheme Scheme
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{
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get { return new SchemeMap { KnownSchemes = KnownSchemes }; }
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set { KnownSchemes = ((SchemeMap)value).KnownSchemes; }
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}
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}
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[Serializable]
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public class AImageScheme
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{
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public byte Value1;
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public byte Value2;
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public byte Value3;
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public byte[] HeaderOrder;
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public bool Flipped;
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public AImageScheme ()
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{
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Flipped = true;
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}
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}
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[Serializable]
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public class SchemeMap : ResourceScheme
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{
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public Dictionary<string, AImageScheme> KnownSchemes;
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}
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public class BellOptions : ResourceOptions
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{
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public AImageScheme Scheme;
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}
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}
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