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getopt in perl

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# 1  
Old 03-02-2009
getopt in perl
Hi,

I have a perl script with two functions say func a and func b.

sub a {
-----------
---------
}

sub b {
---------
---------
}

I want to use this function on command line as we can do in shell script using getopt.

My motto here is to run the script like this

my_perl_script -a(function a is called) -b(function b is called) -h(help)

i have the functions ready but confused how to use getopt here or some similar utility which is there in perl.

Any kind of help is much appericiated.

Thanks
NT
# 2  
Old 03-02-2009
Check this out:

Getopt::Long - perldoc.perl.org

Getopt::Std - perldoc.perl.org
# 3  
Old 03-03-2009
Hi,

Can you give me a psuedo code, i will write myself later.
Which one to use here in my code.

Thanks
NT
# 4  
Old 03-04-2009
Hi,

Can anyone tell me which getopt to use in my case.
A little syntax help is much appericiated.


Thanks
NT
# 5  
Old 03-04-2009
I prefer to help people that show effort, but here is a not very good example:

Code:
use warnings;
use strict;
use Getopt::Std;
my $opt = 'abh';
my %opt;
getopts( $opt, \%opt );

a() if $opt{a};
b() if $opt{b};
help() if $opt{h};  

sub a {
   print "We are in a\n";
}
sub b {
   print "We are in b\n";
}

sub help {
   print We are in h\n";
}


See GetOpt::Std for more details
# 6  
Old 03-06-2009
Hi All,

I am using getopt like this --
Code:
use Getopt::Std;
my $opt = "epu";
my %options;
getopts( $opt , \%options );
evaluate_risk_action_time() if  defined  $options(e) ;
post_evaluate_action_time() if defined  $options(p) ;
usage() if defined  $options(u) ;

but when i run this as --

Code:
perl filename.pl -e -p -u

I am getting these errors--

Code:
C:\>perl evaluate.pl -e -p -u
Global symbol "$options" requires explicit package name at evaluate.pl line 100.

syntax error at evaluate.pl line 100, near "$options("
Global symbol "$options" requires explicit package name at evaluate.pl line 101.

syntax error at evaluate.pl line 101, near "$options("
Global symbol "$options" requires explicit package name at evaluate.pl line 102.

syntax error at evaluate.pl line 102, near "$options("
Execution of evaluate.pl aborted due to compilation errors.

Kindly advise some tips..

Thanks
NT
# 7  
Old 03-06-2009
You didn't look at my example very closely. You are using parentheses () where you should be using curly brackets {}

$options('e') should be $options{'e'} same for the other ones
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