Function merge_setup

src/remote/merge.cpp:188–225

}

static ISC_STATUS merge_setup(const ClumpletReader& input, UCHAR** out, const UCHAR* const end,
							  FB_SIZE_T delta_length)
{
/**************************************
 *
 *	m e r g e _ s e t u p
 *
 **************************************
 *
 * Functional description
 *	Get ready to toss new stuff onto an info packet.  This involves
 *	picking up and bumping the "count" field and copying what is
 *	already there.
 *
 **************************************/
	FB_SIZE_T length = input.getClumpLength();
	const FB_SIZE_T new_length = length + delta_length;

	if (new_length > MAX_USHORT || *out + new_length + 2 >= end)
	{
		(*out)[-1] = isc_info_truncated;
		return FB_FAILURE;
	}

	const USHORT count = 1 + *(input.getBytes());
	PUT_WORD(*out, new_length);
	PUT(*out, (UCHAR) count);

	// Copy data portion of information sans original count

	if (--length)
	{
		memcpy(*out, input.getBytes() + 1, length);
		*out += length;
	}

	return FB_SUCCESS;
}