public void DecodeDmkHeader()
{
byte[] encodedHeader = {0x00, 0x28, 0x00, 0x19, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
var header = new DmkDiskHeader(new MemoryStream(encodedHeader));
Assert.AreEqual(true, header.IsWriteable);
Assert.AreEqual(false, header.IsSingleDensity);
Assert.AreEqual(false, header.IgnoreDensity);
Assert.AreEqual(40, header.Tracks);
Assert.AreEqual(1, header.Heads);
Assert.AreEqual(0x1900, header.EncodedTrackLength);
}
/// <summary>
/// Reads a DMK disk image from a given stream.
/// </summary>
/// <param name="image">Stream containing the HFE disk image.</param>
/// <param name="isWriteable">Allow write operations to this disk.</param>
/// <returns>A disk object.</returns>
public static DmkDisk Open(Stream image, bool isWriteable)
{
if (image == null)
{
throw new ArgumentNullException("image");
}
if (!image.CanRead)
{
throw new NotSupportedException("Disk image stream does not support reading");
}
if (!image.CanSeek)
{
throw new NotSupportedException("Disk image stream does not support seeking");
}
if (isWriteable && !image.CanWrite)
{
throw new NotSupportedException("Disk image stream does not support writing");
}
var header = new DmkDiskHeader(image);
if (header.IsSingleDensity)
{
throw new NotSupportedException("Single density disks not supported");
}
var disk = new DmkDisk();
disk.diskImageStream = image;
disk.IsWriteable = isWriteable && header.IsWriteable;
disk.Heads = header.Heads;
disk.Tracks = header.Tracks;
disk.TrackLength = header.EncodedTrackLength;
return(disk);
}
/// <summary>
/// Reads a DMK disk image from a given stream.
/// </summary>
/// <param name="image">Stream containing the HFE disk image.</param>
/// <param name="isWriteable">Allow write operations to this disk.</param>
/// <returns>A disk object.</returns>
public static DmkDisk Open(Stream image, bool isWriteable)
{
if (image == null) throw new ArgumentNullException("image");
if (!image.CanRead) throw new NotSupportedException("Disk image stream does not support reading");
if (!image.CanSeek) throw new NotSupportedException("Disk image stream does not support seeking");
if (isWriteable && !image.CanWrite)
throw new NotSupportedException("Disk image stream does not support writing");
var header = new DmkDiskHeader(image);
if (header.IsSingleDensity) throw new NotSupportedException("Single density disks not supported");
var disk = new DmkDisk();
disk.diskImageStream = image;
disk.IsWriteable = isWriteable && header.IsWriteable;
disk.Heads = header.Heads;
disk.Tracks = header.Tracks;
disk.TrackLength = header.EncodedTrackLength;
return disk;
}
