Function pg_encoding_mblen

src/common/wchar.c:1967–1973

* Returns the byte length of a multibyte character. * * Caution: when dealing with text that is not certainly valid in the * specified encoding, the result may exceed the actual remaining * string length. Callers that are not prepared to deal with that * should use pg_encoding_mblen_bounded() instead. */

 * should use pg_encoding_mblen_bounded() instead.
 */
int
pg_encoding_mblen(int encoding, const char *mbstr)
{
	return (PG_VALID_ENCODING(encoding) ?
			pg_wchar_table[encoding].mblen((const unsigned char *) mbstr) :
			pg_wchar_table[PG_SQL_ASCII].mblen((const unsigned char *) mbstr));
}

/*
 * Returns the byte length of a multibyte character; but not more than