Function pg_encoding_dsplen

src/common/wchar.c:1988–1994

* Returns the display length of a multibyte character. */

 * Returns the display length of a multibyte character.
 */
int
pg_encoding_dsplen(int encoding, const char *mbstr)
{
	return (PG_VALID_ENCODING(encoding) ?
			pg_wchar_table[encoding].dsplen((const unsigned char *) mbstr) :
			pg_wchar_table[PG_SQL_ASCII].dsplen((const unsigned char *) mbstr));
}

/*
 * Verify the first multibyte character of the given string.