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109 lines
4.2 KiB
C#
109 lines
4.2 KiB
C#
//! \file ArcCPN.cs
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//! \date 2018 Feb 14
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//! \brief Marron resource archive.
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//
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// Copyright (C) 2018 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.RegularExpressions;
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// [010727][Marron] Cosmos no Sora ni
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namespace GameRes.Formats.Marron
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{
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internal class CpnArchive : ArcFile
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{
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public readonly byte Key;
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public CpnArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, byte key)
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: base (arc, impl, dir)
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{
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Key = key;
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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 "DAT/CPN"; } }
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public override string Description { get { return "Marron 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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static readonly Regex CpnEntryRe = new Regex (@"#(?:\./)?(?<name>[^$]+)\$(?<offset>\d+)\*(?<size>\d+)\+");
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public override ArcFile TryOpen (ArcView file)
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{
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if (!file.Name.HasExtension (".dat"))
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return null;
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var cpn_name = Path.ChangeExtension (file.Name, ".cpn");
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if (!VFS.FileExists (cpn_name))
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return null;
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byte key;
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string cpn_index;
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using (var cpn = VFS.OpenView (cpn_name))
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{
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key = cpn.View.ReadByte (0);
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var cpn_data = cpn.View.ReadBytes (1, (uint)(cpn.MaxOffset - 1));
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for (int i = 0; i < cpn_data.Length; ++i)
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cpn_data[i] ^= key;
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cpn_index = Encodings.cp932.GetString (cpn_data);
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}
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int idx = cpn_index.IndexOf ('#', 1);
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if (idx <= 1)
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return null;
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var data_name = cpn_index.Substring (1, idx-1);
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if (!VFS.IsPathEqualsToFileName (file.Name, data_name))
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return null;
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var dir = new List<Entry>();
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var match = CpnEntryRe.Match (cpn_index, idx);
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while (match.Success)
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{
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var name = match.Groups["name"].Value;
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var entry = FormatCatalog.Instance.Create<Entry> (name);
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entry.Offset = UInt32.Parse (match.Groups["offset"].Value);
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entry.Size = UInt32.Parse (match.Groups["size"].Value);
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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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match = match.NextMatch();
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}
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if (0 == dir.Count)
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return null;
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return new CpnArchive (file, this, dir, key);
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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 carc = arc as CpnArchive;
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if (null == carc)
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return input;
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return new XoredStream (input, carc.Key);
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}
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}
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}
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