The current implementation handles three modes: numeric, alphanumeric and
byte.
Kanji is currently not supported.
Please contact the maintainer if you need it.
Numeric: only digits from 0 to 9
Alphanumeric: all numeric characters, upper case LETTERS
, and the
characters " "
(space), "$"
, "%"
, "*"
, "+"
, "-"
, "."
, "/"
and
":"
Byte: All characters from the Latin 1 (ISO 8859-1) character set.
Input strings with an other encoding are converted into Latin 1.
The function return an error if such conversion fails.