public void IntLSBMSB(int i, int start, int end)
{
BeginField(start);
this.generator.Bytes(ConvertTo.Int2LSB(i));
this.generator.Bytes(ConvertTo.Int2MSB(i));
EndField(end);
}
private void susp_base_ce(MemoryStream m) // IEEE P1282 SUSP ( 5.1 )
{
int start = (int)m.Length;
m.WriteByte((byte)'C');
m.WriteByte((byte)'E');
m.WriteByte(28); // LEN_CE
m.WriteByte(1); // version
m.Write(ConvertTo.Int2LSB(ContinuationBlock), 0, 4);
m.Write(ConvertTo.Int2MSB(ContinuationBlock), 0, 4);
m.Write(ConvertTo.Int2LSB(0), 0, 4); // Continuation Offset
m.Write(ConvertTo.Int2MSB(0), 0, 4); // Continuation Offset
m.Write(ConvertTo.Int2LSB(ContinuationLength), 0, 4);
m.Write(ConvertTo.Int2MSB(ContinuationLength), 0, 4);
System.Diagnostics.Debug.Assert((m.Length - start) == 28);
}
/// <summary>
/// writes a file out to cd. Generate the Boot Info Table if necessary
/// </summary>
/// <param Name="f">the file to write</param>
/// <param Name="primaryVolumeDescriptor">the PVD block, passed in case we need to generate the Boot Info Table</param>
public void WriteFile(IsoFile f, int primaryVolumeDescriptor)
{
if (f.fileInfo.Length > 0xffffffff)
{
throw new NotImplementedException(">4G files not implemented");
}
int bytes = (int)f.fileInfo.Length;
if (this.fs == null)
{
this.Index += bytes;
return;
}
// TODO FIXME - create smaller reusable buffer and read fixed-size chunks at a time...
byte[] b = new byte[bytes];
using (FileStream stream = f.fileInfo.OpenRead())
{
if (bytes != stream.Read(b, 0, bytes))
{
throw new Exception("number of bytes read from file != reported length of file: " + f.fileInfo.Name);
}
}
if (f.BootInfoTable)
{
// TODO FIXME - this is TERRIBLE. This should be implemented at a higher level, and
// doing it here requires passing the primaryVolumeDescriptor to every call of WriteFile()
// The reason it is here is because this is the only place where the file actually gets
// pulled into memory and I didn't want to modify the boot image on-disk like mkisofs does.
Bytes(b, 0, 8);
Bytes(ConvertTo.Int2LSB(primaryVolumeDescriptor));
Bytes(ConvertTo.Int2LSB(f.DataBlock));
Bytes(ConvertTo.Int2LSB((int)f.fileInfo.Length));
Bytes(ConvertTo.Int2LSB(0)); // TODO FIXME - checksum
DupByte(0, 40); // reserved
Bytes(b, 64, bytes - 64);
}
else
{
Bytes(b);
}
}