Function appendStringInfo

src/common/stringinfo.c:106–128

* appendStringInfo * * Format text data under the control of fmt (an sprintf-style format string) * and append it to whatever is already in str. More space is allocated * to str if necessary. This is sort of like a combination of sprintf and * strcat. */

 * strcat.
 */
void
appendStringInfo(StringInfo str, const char *fmt,...)
{
	int			save_errno = errno;

	for (;;)
	{
		va_list		args;
		int			needed;

		/* Try to format the data. */
		errno = save_errno;
		va_start(args, fmt);
		needed = appendStringInfoVA(str, fmt, args);
		va_end(args);

		if (needed == 0)
			break;				/* success */

		/* Increase the buffer size and try again. */
		enlargeStringInfo(str, needed);
	}
}

/*
 * appendStringInfoVA