Hi,
Your problem is that Getopt::Long is consuming your -help as the argument to
-abc before it can be recognised. You might be able to do something with the
other Getopt::* modules, but the following piece of code will do what you want
if you really need it:
use List::MoreUtils qw(any);
use Getopt::Long;
my $abc;
my $help;
if ( any { $_ eq '-help' } @ARGV ) {
$help = 1;
}
GetOptions (
"abc=s" => \$abc,
"help" => \$help
);
if ( $help ) { print "This is help message\n" ; exit ;}
if ($abc) { print "You have choosen \"abc\" as $abc" };
# ==========================================
If you don't have List::MoreUtils installed and can't install it, replace the
'if ( any...)' block with:
foreach my $arg (@ARGV) {
if ( $arg eq '-help' ) {
$help = 1;
last;
}
}
Cheers,
Michael
--
Michael Brader
Senior Software Engineer - Billing
Techops - Softdev
Internode http://www.internode.on.net/
________________________________________
From: Rajesh Saha [rajeshsaha...@gmail.com]
Sent: Wednesday, 16 May 2012 6:39 PM
To: beginners@perl.org
Subject: Getopt::Long
Hi,
In my program, I am using the module Getopt::Long
My intension is that if the user chooses "--help", the program should show
the help message without bothering whether other options has been used or
not.
My program (say, test.pl) :
use Getopt::Long
my $abc;
my $help;
Getoptions ( "abc=s" => \$abc,
"help" => \$help
);
if ($help) { print "This is help message\n" ; exit ;}
if ($abc) { print "You have choosen \"abc\" as $abc" };
If I run this:
1. test.pl -help
Output: This is help message
2. test.pl -abc ABC
Output : You have choosen abc as ABC
3. test.pl -abc -help
Output: You have choosen abc as -help
Out the above results 1 & 2 are fine, but 3 is not as I want. I understand
what's happening here [$abc is assigned as "-help"], but don't have idea
how to implement it properly so that in the 3rd it would print like " This
is help message" .
Can anybody help please ?
Thanks n regards
Rajesh Saha
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