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103 lines
3.7 KiB
C#
103 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 : Info.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : MicroDOS 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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// ReSharper disable UnusedType.Local
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// ReSharper disable UnusedMember.Local
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using System.Text;
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using Aaru.CommonTypes.AaruMetadata;
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using Aaru.CommonTypes.Enums;
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using Aaru.CommonTypes.Interfaces;
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using Aaru.Helpers;
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using Partition = Aaru.CommonTypes.Partition;
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namespace Aaru.Filesystems;
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/// <inheritdoc />
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/// <summary>
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/// Implements detection for the MicroDOS filesystem. Information from http://www.owg.ru/mkt/BK/MKDOS.TXT Thanks
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/// to tarlabnor for translating it
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/// </summary>
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public sealed partial class MicroDOS
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{
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#region IFilesystem Members
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/// <inheritdoc />
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public bool Identify(IMediaImage imagePlugin, Partition partition)
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{
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if(1 + partition.Start >= partition.End) return false;
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if(imagePlugin.Info.SectorSize < 512) return false;
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ErrorNumber errno = imagePlugin.ReadSector(0 + partition.Start, false, out byte[] bk0, out _);
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if(errno != ErrorNumber.NoError) return false;
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Block0 block0 = Marshal.ByteArrayToStructureLittleEndian<Block0>(bk0);
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return block0 is { label: MAGIC, mklabel: MAGIC2 };
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}
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/// <inheritdoc />
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public void GetInformation(IMediaImage imagePlugin, Partition partition, Encoding encoding, out string information,
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out FileSystem metadata)
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{
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information = "";
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metadata = new FileSystem();
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var sb = new StringBuilder();
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ErrorNumber errno = imagePlugin.ReadSector(0 + partition.Start, false, out byte[] bk0, out _);
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if(errno != ErrorNumber.NoError) return;
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Block0 block0 = Marshal.ByteArrayToStructureLittleEndian<Block0>(bk0);
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sb.AppendLine(Localization.MicroDOS_filesystem);
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sb.AppendFormat(Localization.Volume_has_0_blocks_1_bytes, block0.blocks, block0.blocks * 512).AppendLine();
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sb.AppendFormat(Localization.Volume_has_0_blocks_used_1_bytes, block0.usedBlocks, block0.usedBlocks * 512)
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.AppendLine();
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sb.AppendFormat(Localization.Volume_contains_0_files, block0.files).AppendLine();
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sb.AppendFormat(Localization.First_used_block_is_0, block0.firstUsedBlock).AppendLine();
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metadata = new FileSystem
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{
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Type = FS_TYPE,
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ClusterSize = 512,
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Clusters = block0.blocks,
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Files = block0.files,
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FreeClusters = (ulong)(block0.blocks - block0.usedBlocks)
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};
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information = sb.ToString();
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}
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#endregion
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} |