quick question about --usage

[Papp Gyozo (VBuster)]

Hi there,

From the docs:
"usage: The “Usage” string that will be printed with the help5. If not specified, it will be generated automatically. Optional."

Does it mean I cannot use the autogenerated part of the usage string (you know everything after the product/package name) if I specify "usage"?



--
Papp, Gyozo
Virusbuster Kft


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[Lorenzo Bettini]

Papp Gyozo (VBuster) wrote:

> Hi there,
>
>> From the docs:
> "usage: The “Usage” string that will be printed with the help5. If
> not specified, it will be generated automatically. Optional."
>
> Does it mean I cannot use the autogenerated part of the usage string
> (you know everything after the product/package name) if I specify
> "usage"?
>

hi there!

well actually, if you specify your usage, this will overwrite the one
that's automatically generated...

if you need also the one that's automatically generated, probably you
should use "purpose" or "description"
(http://www.gnu.org/software/gengetopt/gengetopt.html#Basic-Usage).

Would that fit your need?  Otherwise, could you please provide me your
scenario?

hope to hear from you soon!
cheers
        Lorenzo

--
Lorenzo Bettini, PhD in Computer Science, DSI, Univ. di Firenze
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[Papp Gyozo (VBuster)]

Hi there,

> Papp Gyozo (VBuster) wrote:
> >
> >> From the docs:
> > "usage: The “Usage” string that will be printed with the help5. If
> > not specified, it will be generated automatically. Optional."
> >
> > Does it mean I cannot use the autogenerated part of the usage string
> > (you know everything after the product/package name) if I specify
> > "usage"?
>
> well actually, if you specify your usage, this will overwrite the one
> that's automatically generated...
>
> if you need also the one that's automatically generated, probably you
> should use "purpose" or "description"
>
> Would that fit your need?  Otherwise, could you please provide me your
> scenario?

Thanks. It is nothing specific.

I was just curious but failed to compile the latest package till now on MinGW (nothing to do with the package rather the new environment) thus I did not manage to try it myself.


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[Papp Gyozo (VBuster)]

Hmm...

Actually usage string cannot be by passed anyhow. Is it intended?

If I don't specify custom usage in .ggo, gengetopt will do it instead of me.
If I could specify an empty string, then _print_help() would print several empty lines:

  if (strlen(cmdline_options_purpose) > 0)
    printf("\n%s\n", cmdline_options_purpose);

  printf("\n%s\n\n", cmdline_options_usage);
  while (cmdline_options_help[i])


while purpose are really optional (see if).


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[Papp Gyozo (VBuster)]

OK, clarify the whole scenario.

My basic problem is that the package name is different from the name of the binary. That's why the current implementation does not suffice my needs because it refers unconditionally to <func_name>_PACKAGE #define.

> Hmm...
>
> Actually usage string cannot be by passed anyhow. Is it intended?
>
> If I don't specify custom usage in .ggo, gengetopt will do it instead of me.
> If I could specify an empty string, then _print_help() would print several
> empty lines:
>
>   if (strlen(cmdline_options_purpose) > 0)
>     printf("\n%s\n", cmdline_options_purpose);
>
>   printf("\n%s\n\n", cmdline_options_usage);
>   while (cmdline_options_help[i])
>
>
> while purpose are really optional (see if).

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[Lorenzo Bettini]

Papp Gyozo (VBuster) wrote:

> Hmm...
>
> Actually usage string cannot be by passed anyhow. Is it intended?
>
> If I don't specify custom usage in .ggo, gengetopt will do it instead of me.
> If I could specify an empty string, then _print_help() would print several empty lines:
>
>   if (strlen(cmdline_options_purpose) > 0)
>     printf("\n%s\n", cmdline_options_purpose);
>
>   printf("\n%s\n\n", cmdline_options_usage);
>   while (cmdline_options_help[i])
>
>
> while purpose are really optional (see if).

you're right!
I should put the printing of the usage string under the scope of an if,
just like purpose.  I'll include it in the next release.

thanks
        Lorenzo

--
Lorenzo Bettini, PhD in Computer Science, DSI, Univ. di Firenze
ICQ# lbetto, 16080134     (GNU/Linux User # 158233)
HOME: http://www.lorenzobettini.it MUSIC: http://www.purplesucker.com
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


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