Reorganize filesystems.

Aaru.Filesystems/MicroDOS/Info.cs

@@ -0,0 +1,104 @@
+// /***************************************************************************
+// Aaru Data Preservation Suite
+// ----------------------------------------------------------------------------
+//
+// Filename       : Info.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : MicroDOS filesystem plugin
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This library is free software; you can redistribute it and/or modify
+//     it under the terms of the GNU Lesser General Public License as
+//     published by the Free Software Foundation; either version 2.1 of the
+//     License, or (at your option) any later version.
+//
+//     This library is distributed in the hope that it will be useful, but
+//     WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+//     Lesser General Public License for more details.
+//
+//     You should have received a copy of the GNU Lesser General Public
+//     License along with this library; if not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2011-2023 Natalia Portillo
+// ****************************************************************************/
+
+// ReSharper disable UnusedType.Local
+// ReSharper disable UnusedMember.Local
+
+using System.Text;
+using Aaru.CommonTypes;
+using Aaru.CommonTypes.Enums;
+using Aaru.CommonTypes.Interfaces;
+using Aaru.Helpers;
+using Schemas;
+
+namespace Aaru.Filesystems;
+
+/// <inheritdoc />
+/// <summary>
+///     Implements detection for the MicroDOS filesystem. Information from http://www.owg.ru/mkt/BK/MKDOS.TXT Thanks
+///     to tarlabnor for translating it
+/// </summary>
+public sealed partial class MicroDOS
+{
+    /// <inheritdoc />
+    public bool Identify(IMediaImage imagePlugin, Partition partition)
+    {
+        if(1 + partition.Start >= partition.End)
+            return false;
+
+        if(imagePlugin.Info.SectorSize < 512)
+            return false;
+
+        ErrorNumber errno = imagePlugin.ReadSector(0 + partition.Start, out byte[] bk0);
+
+        if(errno != ErrorNumber.NoError)
+            return false;
+
+        Block0 block0 = Marshal.ByteArrayToStructureLittleEndian<Block0>(bk0);
+
+        return block0 is { label: MAGIC, mklabel: MAGIC2 };
+    }
+
+    /// <inheritdoc />
+    public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information, Encoding encoding)
+    {
+        Encoding    = encoding ?? Encoding.GetEncoding("koi8-r");
+        information = "";
+
+        var sb = new StringBuilder();
+
+        ErrorNumber errno = imagePlugin.ReadSector(0 + partition.Start, out byte[] bk0);
+
+        if(errno != ErrorNumber.NoError)
+            return;
+
+        Block0 block0 = Marshal.ByteArrayToStructureLittleEndian<Block0>(bk0);
+
+        sb.AppendLine(Localization.MicroDOS_filesystem);
+        sb.AppendFormat(Localization.Volume_has_0_blocks_1_bytes, block0.blocks, block0.blocks * 512).AppendLine();
+
+        sb.AppendFormat(Localization.Volume_has_0_blocks_used_1_bytes, block0.usedBlocks, block0.usedBlocks * 512).
+           AppendLine();
+
+        sb.AppendFormat(Localization.Volume_contains_0_files, block0.files).AppendLine();
+        sb.AppendFormat(Localization.First_used_block_is_0, block0.firstUsedBlock).AppendLine();
+
+        XmlFsType = new FileSystemType
+        {
+            Type                  = FS_TYPE,
+            ClusterSize           = 512,
+            Clusters              = block0.blocks,
+            Files                 = block0.files,
+            FilesSpecified        = true,
+            FreeClusters          = (ulong)(block0.blocks - block0.usedBlocks),
+            FreeClustersSpecified = true
+        };
+
+        information = sb.ToString();
+    }
+}