base 64 decode as described in rfc 1421 . does not attempt to cope with extra whitespace as described in rfc 1521 . concode_field_sep char[] nibble2code concode_elem_sep char pad concode_elem_sep byte[] code2nibble concode_field_sep String encode concode_elem_sep String encode concode_elem_sep char[] encode
String function ( String arg0 ) { try { return decode ( arg0 , StringUtil . __ISO_8859_1 ) ; } catch ( UnsupportedEncodingException loc0 ) { throw new IllegalArgumentException ( loc0 . toString ( ) ) ; } }