Re: [help-gengetopt] accept option arguments (even in enum)

[Lorenzo Bettini]

Papp Gyozo (VBuster) wrote:
> Hi there,
>
> long time was passing by since my last mail. It actually means the current 
> version suffices our needs quite very well. Actually it is a good piece of 
> work! Congratulation.

thanks a lot!
this kind of emails always makes me happy :-)

> Now we have run into a problem. gengetopt denies special characters (ie. 
> symbols like '-' or '+') in enum option values and in default values as well 
> suspectedly.
>
> We would like to have a filter option which filters out/in the specified type 
> of records. We thought it was quite natural to do it in the following way:
>
> option  "filter"  f 
>     "include or exclude the given type in case of leading '-' or '+', respectively."
>     multiple enum
>     values="-unspecified","-ok","-incompatible","-missing","-other",
>            "+unspecified","+ok","+incompatible","+missing","+other",
>            "problematic","all"
>     default="problematic"
>     optional
>
> What do you think? gengetopt should enable symbols in enums or should we 
> rephrase our idea? Please note that this option is multiple enum, so the real 
> strength of this approach that custom mixed filter definitions can be described 
> this way:
>
> --filter=+other,-missing

well I think this would be feasible without any problem!
My only concern is the literals used for the actual C enum values: + and 
 - are not valid characters, so these characters should be translated 
in the C enum...

something like

enum { filter_MINUS_UNSPECIFIED, filter_PLUS_OK, ... }

what do you think?  Or do you have any other suggestion?

cheers
        Lorenzo

--
Lorenzo Bettini, PhD in Computer Science, DI, Univ. Torino
ICQ# lbetto, 16080134     (GNU/Linux User # 158233)
HOME: http://www.lorenzobettini.it MUSIC: http://www.purplesucker.com
http://www.myspace.com/supertrouperabba
BLOGS: http://tronprog.blogspot.com  http://longlivemusic.blogspot.com
http://www.gnu.org/software/src-highlite
http://www.gnu.org/software/gengetopt
http://www.gnu.org/software/gengen http://doublecpp.sourceforge.net