Function printfPQExpBuffer

src/interfaces/libpq/pqexpbuffer.c:243–263

* printfPQExpBuffer * Format text data under the control of fmt (an sprintf-like format string) * and insert it into str. More space is allocated to str if necessary. * This is a convenience routine that does the same thing as * resetPQExpBuffer() followed by appendPQExpBuffer(). */

 * resetPQExpBuffer() followed by appendPQExpBuffer().
 */
void
printfPQExpBuffer(PQExpBuffer str, const char *fmt,...)
{
	int			save_errno = errno;
	va_list		args;
	bool		done;

	resetPQExpBuffer(str);

	if (PQExpBufferBroken(str))
		return;					/* already failed */

	/* Loop in case we have to retry after enlarging the buffer. */
	do
	{
		errno = save_errno;
		va_start(args, fmt);
		done = appendPQExpBufferVA(str, fmt, args);
		va_end(args);
	} while (!done);
}

/*
 * appendPQExpBuffer