Re: [help-gengetopt] Feature requests: dependencies between option values; description of option values

[Lorenzo Bettini]

nlohmann wrote:
> Hello!
>
> I really like gengetopt, but I miss one feature to actually use it in a tool
> of mine.

Hi Niels!

glad you like gengetopt :-)

I also received your previous bug report and will work on that.

see the other following comments (I assume you're already using the most 
recent version 2.22, right?)

> GNU BPEL2oWFN can be run in a whole different modes. I use one option
> "--mode" to chose one of this modes, e.g. "--mode=net". Additionally, there
> are a lot of parameters, currently invoked via "--parameter", e.g.
> "--parameter=reduce".

gengetopt now supports mode options 
(http://www.gnu.org/software/gengetopt/gengetopt.html#Mode-options) but 
I don't think this would solve your problem.

I'll try to see what I can do for your request.

> Now I miss two features in gengetopt:
>
> 1. I would like to make certain parameters dependend on the mode chosen. For
> example, parameter "reduce" should only be valid together with mode "net".
> As far as I understand, I currently can only express dependence between
> whole options, but not between their chosen values.

see above

> 2. I would like to add descriptions not only to the option itself, but also
> to the valid values. I know I could do this with "text" insertions, I like
> the way gengetopt does all the wrapping and layout of the help output.

with text insertions could you achieve your goal?  or am I missing 
something?

otherwise what syntax (and what help output) would you suggest?

> I know I could solve my problems by giving each mode value a single option,
> e.g. "--net" or "--small", but I don't want to change the set of command
> line parameters just because switching to gengetopt.
>
> I hope you can help me. Again, great tool!

thanks!

hope to hear from you soon
cheers
        Lorenzo

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Lorenzo Bettini, PhD in Computer Science, DI, Univ. Torino
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