Re: [help-gengetopt] gengetopt: initialization of args_info_help[]

[Lorenzo Bettini]

Andre Noll wrote:
> On 09:30, Lorenzo Bettini wrote:
> > > So for N parsers, I have to allocate N args_info structures and call
> > > N init functions even in the case I just want to print the short help.
> > > Is this behaviour intended?
> > I never thought about such a situation actually; I think that that init 
> > help function might be made public and callable from outside
>
> Yes, that would be easiest, one just has to remove the static
> keyword in the .c file and add the function prototype to the .h file.
>
> Alternativly one could change the cmdline_parser_init function so that
> it just calls init_help() if called with a NULL pointer. Currently,
> such a usage would lead to a segfault.

mh... probably the first alternative has a cleaner semantics

> > > An alternative would be to initialize also the short help by using
> > > string literals, just like the detailed help. The duplicated strings
> > > would not increase code size because the compiler should be smart
> > > enough to put identical strings into memory only once.
> > please, do not ask for that ;-) ;-)
> > this behavior was requested by other users and it was quite a nightmare 
> > to implement it, so I wouldn't want to go back ;-)
>
> OK, so I won't argue for this alternative any more :) But out of
> curiosity, what were the problems in inplementing it this way?

actually, I don't remember all the details now, but the problem was in 
the generation of code and keeping tracking of all kinds of options and 
performing the right assignments...

cheers
        Lorenzo

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