/// <summary>
/// Reads a HFE 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 HfeDisk 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 diskHeader = new HfeDiskHeader(image);
if (diskHeader.FloppyInterface != HfeDiskHeader.FloppyInterfaceMode.GENERIC_SHUGART_DD)
{
throw new DiskImageFormatException(String.Format("Unsupported floppy interface mode {0}",
diskHeader.FloppyInterface));
}
if (diskHeader.TrackEncoding != HfeDiskHeader.TrackEncodingMode.ISOIBM_MFM)
{
throw new DiskImageFormatException(String.Format("Unsupported track encoding mode {0}",
diskHeader.TrackEncoding));
}
if (diskHeader.TrackEncoding0 != HfeDiskHeader.TrackEncodingMode.ISOIBM_MFM)
{
throw new DiskImageFormatException(
String.Format("Unsupported track encoding mode {0} for track 0 head 0", diskHeader.TrackEncoding0));
}
if (diskHeader.Sides > 1 && diskHeader.TrackEncoding1 != HfeDiskHeader.TrackEncodingMode.ISOIBM_MFM)
{
throw new DiskImageFormatException(
String.Format("Unsupported track encoding mode {0} for track 0 head 1", diskHeader.TrackEncoding1));
}
var disk = new HfeDisk {
DiskHeader = diskHeader, IsWriteable = isWriteable, diskImageStream = image
};
disk.ReadTrackList();
return(disk);
}
/// <summary>
/// Reads a HFE 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 HfeDisk 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 diskHeader = new HfeDiskHeader(image);
if (diskHeader.FloppyInterface != HfeDiskHeader.FloppyInterfaceMode.GENERIC_SHUGART_DD)
throw new DiskImageFormatException(String.Format("Unsupported floppy interface mode {0}",
diskHeader.FloppyInterface));
if (diskHeader.TrackEncoding != HfeDiskHeader.TrackEncodingMode.ISOIBM_MFM)
throw new DiskImageFormatException(String.Format("Unsupported track encoding mode {0}",
diskHeader.TrackEncoding));
if (diskHeader.TrackEncoding0 != HfeDiskHeader.TrackEncodingMode.ISOIBM_MFM)
throw new DiskImageFormatException(
String.Format("Unsupported track encoding mode {0} for track 0 head 0", diskHeader.TrackEncoding0));
if (diskHeader.Sides > 1 && diskHeader.TrackEncoding1 != HfeDiskHeader.TrackEncodingMode.ISOIBM_MFM)
throw new DiskImageFormatException(
String.Format("Unsupported track encoding mode {0} for track 0 head 1", diskHeader.TrackEncoding1));
var disk = new HfeDisk {DiskHeader = diskHeader, IsWriteable = isWriteable, diskImageStream = image};
disk.ReadTrackList();
return disk;
}
