Re: parsing command line arguments multiple times

On 4/29/05, John Doe <security.department@xxxxxxxx> wrote:
>
> Am Freitag, 29. April 2005 10.19 schrieb lohit:
> > On 4/29/05, John Doe <security.department@xxxxxxxx> wrote:
> > > Am Freitag, 29. April 2005 09.19 schrieb lohit:
> > > > On 4/29/05, lohit <lohit.vijayarenu@xxxxxxxxx> wrote:
> > > > > Hi,
> > >
> > > Hi
> > >
> > > > > i have a requirement, as in based on one command line option, the
> > > > > rest of the arguments change for the same script.
> > > > > eg: script could be called in either of the ways
> > > > > script1 -option1 -option2 adfas -option3
> > > > > script -option1 -option4
> > > > > my question is
> > > > > 1. how do we get the option1 alone from GetOptions function
> > > > > 2. can i call GetOptions multiple times?
> > > > > how would you handle such situation
> > > > > thanks in advance for the help!!
> > > >
> > > > ok, i see that only one option could be parse with GetOptions
> > >
> > > Are there reasons not to use GetOpt::Std or GetOpt::Long?
> > > Could you provide some code?
> >
> > i am fine with any GetOpt as long as it solves my problem. this is the
> > problem i have been having.
> > script usage is:
> > script.pl -checkflag -option1 value1 -option2 value2
> > now my problem is i need to check only '-checkflag' flag. rest would be
> > parsed in second run.
> > now if the first run i parse it something like
> > &GetOptions('checkflag' => \$check_flag);
> > if ($checkflag)
> > {
> > do somethign here.....
> > }
> > but perl throws an error,
> > Unknow argument option1
> > Unknow argument option2
> > how do i get rid of them, or any other solution?
> > thanks!
> >
> > > and for the
> > >
> > > > next run i could copy back a saved version of @ARGV.
> > > > but while i am processin any one options, i get an error message
> saying
> > > > *Unknow option* * *for the other unused options. how do i get rid of
> > >
> > > this?
>
> Hi lohit
>
> With the modules I mentoned, you can parse all provided options with one
> sub
> call. The handling of the values is separated from that.
>
> Here is a snippet of one of my scripts;
> by reading the man pages you can adapt it to your needs:
>
> === beg ===
>
> use strict;
> use warnings;
> use Getopt::Long;
>
> # default values for all possible options:
> #
> my $opt_surveyname='';
> my $opt_fbname='';
>
> # slurp all cmdline opts into the corresponding vars:
> #
> GetOptions (
> 'surveyname=s'=>\$opt_surveyname,
> 'fbname=s'=>\$opt_fbname,
> );
>
> # Check correct options / combinations / whatever
> #
> &usage () unless $opt_surveyname and $opt_fbname;
>
> ###
> ### Here your code to process the provided option values
> ###
>
> sub usage {
> print <<EOF;
> ...
> EOF
> exit;
> }
>
> === end ===
>
> The script is called
>
> script --surveyname=foo --fbname=bar

thanks joe,
lets assume we add an option -checkflag to your script
script -checkflag --surveyname=foo --fbname=bar
now if i specify -checkflag , we have to parse surveryname and fbname
lets assume i do not pass checkflag , then i would like to invoke script
soemthing like this
script --surveyname==foo --username=foobar
so, checkflag is kind of check for different *sets* of arguments.
so i need to parse arguments multiple times..
how would you go about in this situation
thanks for the help!

joe
>
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