/// <summary>
/// Writes the data contained in the given buffer
/// </summary>
/// <param name="buffer">The buffer to write</param>
public unsafe override void Write(ReadOnlySpan <byte> buffer)
{
if (buffer.IsEmpty)
{
return;
}
uint bytesWritten = 0;
try
{
fixed(byte *b = &buffer[0])
{
comStream.Write(b, (uint)buffer.Length, &bytesWritten);
}
}
catch
{
}
if (bytesWritten < buffer.Length)
{
throw new IOException(SR.DataStreamWrite);
}
}
private static int Write(IntPtr thisPtr, byte *pv, uint cb, uint *pcbWritten)
{
try
{
Interop.Ole32.IStream instance = ComInterfaceDispatch.GetInstance <Interop.Ole32.IStream>((ComInterfaceDispatch *)thisPtr);
instance.Write(pv, cb, pcbWritten);
return(S_OK);
}
catch (Exception ex)
{
Debug.WriteLine(ex);
return(ex.HResult);
}
}
public unsafe void CopyTo(Interop.Ole32.IStream pstm, ulong cb, ulong *pcbRead, ulong *pcbWritten)
{
byte[] buffer = ArrayPool <byte> .Shared.Rent(4096);
ulong remaining = cb;
ulong totalWritten = 0;
ulong totalRead = 0;
fixed(byte *b = buffer)
{
while (remaining > 0)
{
uint read = remaining < (ulong)buffer.Length ? (uint)remaining : (uint)buffer.Length;
Read(b, read, &read);
remaining -= read;
totalRead += read;
if (read == 0)
{
break;
}
uint written;
pstm.Write(b, read, &written);
totalWritten += written;
}
}
ArrayPool <byte> .Shared.Return(buffer);
if (pcbRead != null)
{
*pcbRead = totalRead;
}
if (pcbWritten != null)
{
*pcbWritten = totalWritten;
}
}
