Files
Aaru/Aaru.Images/Anex86/Identify.cs

72 lines
2.9 KiB
C#

// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename : Identify.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : Disk image plugins.
//
// --[ Description ] ----------------------------------------------------------
//
// Identifies Anex86 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 © 2011-2023 Natalia Portillo
// ****************************************************************************/
using System.IO;
using Aaru.CommonTypes.Interfaces;
using Aaru.Console;
using Aaru.Helpers;
namespace Aaru.Images;
public sealed partial class Anex86
{
#region IWritableImage Members
/// <inheritdoc />
public bool Identify(IFilter imageFilter)
{
Stream stream = imageFilter.GetDataForkStream();
stream.Seek(0, SeekOrigin.Begin);
if(stream.Length < Marshal.SizeOf<Header>())
return false;
var hdrB = new byte[Marshal.SizeOf<Header>()];
stream.EnsureRead(hdrB, 0, hdrB.Length);
_header = Marshal.SpanToStructureLittleEndian<Header>(hdrB);
AaruConsole.DebugWriteLine(MODULE_NAME, "fdihdr.unknown = {0}", _header.unknown);
AaruConsole.DebugWriteLine(MODULE_NAME, "fdihdr.hddtype = {0}", _header.hddtype);
AaruConsole.DebugWriteLine(MODULE_NAME, "fdihdr.hdrSize = {0}", _header.hdrSize);
AaruConsole.DebugWriteLine(MODULE_NAME, "fdihdr.dskSize = {0}", _header.dskSize);
AaruConsole.DebugWriteLine(MODULE_NAME, "fdihdr.bps = {0}", _header.bps);
AaruConsole.DebugWriteLine(MODULE_NAME, "fdihdr.spt = {0}", _header.spt);
AaruConsole.DebugWriteLine(MODULE_NAME, "fdihdr.heads = {0}", _header.heads);
AaruConsole.DebugWriteLine(MODULE_NAME, "fdihdr.cylinders = {0}", _header.cylinders);
return stream.Length == _header.hdrSize + _header.dskSize &&
_header.dskSize == _header.bps * _header.spt * _header.heads * _header.cylinders;
}
#endregion
}