Function pg_utf8_string_len

src/common/saslprep.c:1001–1020

* Calculate the length in characters of a null-terminated UTF-8 string. * * Returns -1 if the input is not valid UTF-8. */

 * Returns -1 if the input is not valid UTF-8.
 */
static int
pg_utf8_string_len(const char *source)
{
	const unsigned char *p = (const unsigned char *) source;
	int			l;
	int			num_chars = 0;

	while (*p)
	{
		l = pg_utf_mblen(p);

		if (!pg_utf8_islegal(p, l))
			return -1;

		p += l;
		num_chars++;
	}

	return num_chars;
}


/*