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109 lines
3.7 KiB
C#
109 lines
3.7 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : LisaFS.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Apple Lisa filesystem plugin.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2025 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Text;
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using Aaru.CommonTypes.AaruMetadata;
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using Aaru.CommonTypes.Interfaces;
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namespace Aaru.Filesystems;
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// All information by Natalia Portillo
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// Variable names from Lisa API
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/// <inheritdoc />
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/// <summary>Implements the Apple Lisa File System</summary>
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public sealed partial class LisaFS : IReadOnlyFilesystem
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{
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const string MODULE_NAME = "LisaFS plugin";
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bool _debug;
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IMediaImage _device;
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int _devTagSize;
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Encoding _encoding;
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MDDF _mddf;
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bool _mounted;
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SRecord[] _srecords;
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ulong _volumePrefix;
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static Dictionary<string, string> GetDefaultOptions() => new()
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{
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{
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"debug", false.ToString()
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}
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};
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#region IReadOnlyFilesystem Members
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/// <inheritdoc />
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public string Name => "Apple Lisa File System";
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/// <inheritdoc />
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public FileSystem Metadata { get; private set; }
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/// <inheritdoc />
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public Guid Id => new("7E6034D1-D823-4248-A54D-239742B28391");
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/// <inheritdoc />
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public string Author => Authors.NataliaPortillo;
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// TODO: Implement Lisa 7/7 namespace (needs decoding {!CATALOG} file)
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/// <inheritdoc />
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public IEnumerable<(string name, Type type, string description)> SupportedOptions => [];
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/// <inheritdoc />
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public Dictionary<string, string> Namespaces => new()
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{
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{
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"workshop", "Filenames as shown by the Lisa Pascal Workshop (default)"
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},
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{
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"office", "Filenames as shown by the Lisa Office System (not yet implemented)"
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}
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};
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#endregion
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#region Caches
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/// <summary>Caches Extents Files</summary>
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Dictionary<short, ExtentFile> _extentCache;
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/// <summary>Caches system files</summary>
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Dictionary<short, byte[]> _systemFileCache;
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/// <summary>Caches user files files</summary>
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Dictionary<short, byte[]> _fileCache;
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/// <summary>Caches catalogs</summary>
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List<CatalogEntry> _catalogCache;
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/// <summary>Caches file size</summary>
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Dictionary<short, int> _fileSizeCache;
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/// <summary>Lists Extents Files already printed in debug mode to not repeat them</summary>
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List<short> _printedExtents;
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/// <summary>Caches the creation times for subdirectories as to not have to traverse the Catalog File on each stat</summary>
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Dictionary<short, DateTime> _directoryDtcCache;
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#endregion Caches
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} |