Function pg_encoding_verifymbstr

src/common/wchar.c:2014–2020

* Verify that a string is valid for the given encoding. * Returns the number of input bytes (<= len) that form a valid string. * (See comments above for full details of the mbverifystr API.) */

 * (See comments above for full details of the mbverifystr API.)
 */
int
pg_encoding_verifymbstr(int encoding, const char *mbstr, int len)
{
	return (PG_VALID_ENCODING(encoding) ?
			pg_wchar_table[encoding].mbverifystr((const unsigned char *) mbstr, len) :
			pg_wchar_table[PG_SQL_ASCII].mbverifystr((const unsigned char *) mbstr, len));
}

/*
 * fetch maximum length of a given encoding