Method x_getbytes

src/remote/inet.cpp:2571–2635

bool_t InetXdr::x_getbytes(SCHAR* buff, unsigned bytecount)
{
/**************************************
 *
 *	i n e t _ g e t b y t e s
 *
 **************************************
 *
 * Functional description
 *	Get a bunch of bytes from a memory stream if it fits.
 *
 **************************************/
	if (x_public->port_flags & PORT_server)
		return REMOTE_getbytes(this, buff, bytecount);

	// Use memcpy to optimize bulk transfers.

	while (bytecount > sizeof(ISC_QUAD))
	{
		if (x_handy >= bytecount)
		{
			memcpy(buff, x_private, bytecount);
			x_private += bytecount;
			x_handy -= bytecount;
			return TRUE;
		}

		if (x_handy > 0)
		{
			memcpy(buff, x_private, x_handy);
			x_private += x_handy;
			buff += x_handy;
			bytecount -= x_handy;
			x_handy = 0;
		}

		if (!inet_read(this))
			return FALSE;
	}

	// Scalar values and bulk transfer remainder fall thru
	// to be moved byte-by-byte to avoid memcpy setup costs.

	if (!bytecount)
		return TRUE;

	if (x_handy >= bytecount)
	{
		x_handy -= bytecount;
		while (bytecount--)
			*buff++ = *x_private++;

		return TRUE;
	}

	while (bytecount--)
	{
		if (x_handy == 0 && !inet_read(this))