Function pq_getmsgstring

src/backend/libpq/pqformat.c:580–601

-------------------------------- * pq_getmsgstring - get a null-terminated text string (with conversion) * * May return a pointer directly into the message buffer, or a pointer * to a palloc'd conversion result. * -------------------------------- */

 * --------------------------------
 */
const char *
pq_getmsgstring(StringInfo msg)
{
	char	   *str;
	int			slen;

	str = &msg->data[msg->cursor];

	/*
	 * It's safe to use strlen() here because a StringInfo is guaranteed to
	 * have a trailing null byte.  But check we found a null inside the
	 * message.
	 */
	slen = strlen(str);
	if (msg->cursor + slen >= msg->len)
		ereport(ERROR,
				(errcode(ERRCODE_PROTOCOL_VIOLATION),
				 errmsg("invalid string in message")));
	msg->cursor += slen + 1;

	return pg_client_to_server(str, slen);
}

/* --------------------------------
 *		pq_getmsgrawstring - get a null-terminated text string - NO conversion