Re: [help-gengetopt] Gengetopt 2.21 enhancement suggestions

[Andre Noll]

On 17:35, Lorenzo Bettini wrote:

> >>of course range makes sense only for integers right?
> >
> >It would also make sense for floats. And it would be nice to also have
> >"infinite" intervals, i.e. something like "int range=0.." meaning
> >the given integer value must not be negative.
> >
> 
> anyway, only for numerical values, right?

<mathematician hat on> For all type of options such that the
underlying set carries a canonical partial order <mathematician
hat off>.

This includes strings as well:

        string range="bar..baz"

means that the given string must be between "bar" and "baz" in
the lexicographical order.

Note that the "right" lexicographical order depends on the current
locale which is probably a bit strange. As a locale-independent
variant, one could use

        strcmp("bar", arg) <= 0 && strcmp(arg, "baz") <= 0

to test whether arg is valid.

However, I'm not sure at all if the range thing is really useful for
non-numerical values.

Andre
-- 
The only person who always got his work done by Friday was Robinson Crusoe

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