Files
Aaru/Aaru.Images/Virtual98/Identify.cs

82 lines
3.2 KiB
C#

// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename : Identify.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : Disk image plugins.
//
// --[ Description ] ----------------------------------------------------------
//
// Identifies Virtual98 disk images.
//
// --[ 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 © 2011-2025 Natalia Portillo
// ****************************************************************************/
using System.IO;
using System.Linq;
using System.Text;
using Aaru.CommonTypes.Interfaces;
using Aaru.Helpers;
using Aaru.Logging;
namespace Aaru.Images;
public sealed partial class Virtual98
{
#region IWritableImage Members
/// <inheritdoc />
public bool Identify(IFilter imageFilter)
{
Stream stream = imageFilter.GetDataForkStream();
stream.Seek(0, SeekOrigin.Begin);
// Even if comment is supposedly ASCII, I'm pretty sure most emulators allow Shift-JIS to be used :p
var shiftjis = Encoding.GetEncoding("shift_jis");
if(stream.Length < Marshal.SizeOf<Virtual98Header>()) return false;
var hdrB = new byte[Marshal.SizeOf<Virtual98Header>()];
stream.EnsureRead(hdrB, 0, hdrB.Length);
_v98Hdr = Marshal.ByteArrayToStructureLittleEndian<Virtual98Header>(hdrB);
if(!_v98Hdr.signature.SequenceEqual(_signature)) return false;
AaruLogging.Debug(MODULE_NAME,
"v98hdr.signature = \"{0}\"",
StringHandlers.CToString(_v98Hdr.signature, shiftjis));
AaruLogging.Debug(MODULE_NAME, "v98hdr.comment = \"{0}\"", StringHandlers.CToString(_v98Hdr.comment, shiftjis));
AaruLogging.Debug(MODULE_NAME, "v98hdr.padding = {0}", _v98Hdr.padding);
AaruLogging.Debug(MODULE_NAME, "v98hdr.mbsize = {0}", _v98Hdr.mbsize);
AaruLogging.Debug(MODULE_NAME, "v98hdr.sectorsize = {0}", _v98Hdr.sectorsize);
AaruLogging.Debug(MODULE_NAME, "v98hdr.sectors = {0}", _v98Hdr.sectors);
AaruLogging.Debug(MODULE_NAME, "v98hdr.surfaces = {0}", _v98Hdr.surfaces);
AaruLogging.Debug(MODULE_NAME, "v98hdr.cylinders = {0}", _v98Hdr.cylinders);
AaruLogging.Debug(MODULE_NAME, "v98hdr.totals = {0}", _v98Hdr.totals);
return true;
}
#endregion
}