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110 lines
4.2 KiB
C#
110 lines
4.2 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 : Commodore file system plugin.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Identifies the AO-DOS file system and shows information.
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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.Linq;
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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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// Information has been extracted looking at available disk images
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// This may be missing fields, or not, I don't know russian so any help is appreciated
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/// <inheritdoc />
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/// <summary>Implements detection of the AO-DOS filesystem</summary>
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public sealed partial class AODOS
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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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// Does AO-DOS support hard disks?
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if(partition.Start > 0) return false;
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// How is it really?
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if(imagePlugin.Info.SectorSize != 512) return false;
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// Does AO-DOS support any other kind of disk?
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if(imagePlugin.Info.Sectors != 800 && imagePlugin.Info.Sectors != 1600) return false;
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ErrorNumber errno = imagePlugin.ReadSector(0, false, out byte[] sector, out _);
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if(errno != ErrorNumber.NoError) return false;
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BootBlock bb = Marshal.ByteArrayToStructureLittleEndian<BootBlock>(sector);
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return bb.identifier.SequenceEqual(_identifier);
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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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encoding = Encoding.GetEncoding("koi8-r");
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ErrorNumber errno = imagePlugin.ReadSector(0, false, out byte[] sector, out _);
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metadata = new FileSystem();
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if(errno != ErrorNumber.NoError) return;
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BootBlock bb = Marshal.ByteArrayToStructureLittleEndian<BootBlock>(sector);
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var sbInformation = new StringBuilder();
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sbInformation.AppendLine(Localization.Alexander_Osipov_DOS_file_system);
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metadata = new FileSystem
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{
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Type = FS_TYPE,
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Clusters = imagePlugin.Info.Sectors,
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ClusterSize = imagePlugin.Info.SectorSize,
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Files = bb.files,
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FreeClusters = imagePlugin.Info.Sectors - bb.usedSectors,
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VolumeName = StringHandlers.SpacePaddedToString(bb.volumeLabel, encoding),
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Bootable = true
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};
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sbInformation.AppendFormat(Localization._0_files_in_volume, bb.files).AppendLine();
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sbInformation.AppendFormat(Localization._0_used_sectors_on_volume, bb.usedSectors).AppendLine();
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sbInformation.AppendFormat(Localization.Disk_name_0, StringHandlers.CToString(bb.volumeLabel, encoding))
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.AppendLine();
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information = sbInformation.ToString();
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}
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#endregion
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} |