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Looping through text and adding values to hash

by smford22 (Initiate)
on Jul 10, 2013 at 17:10 UTC ( #1043505=perlquestion: print w/replies, xml ) Need Help??
smford22 has asked for the wisdom of the Perl Monks concerning the following question:

Hello Monks, I have written a script that wraps Java Keytool in perl to list the certificates in a keystore. I am using a foreach loop through the output from Keytool and pull the name of the certificate and the expiration date. I want to put the values into an array of hashes but I cannot quite understand how to get that to happen. What I am trying to get to is something like this...
@AoH = ( { $certName => $validTo, $certName => $validTo, } );
I declare a global array of hashes at the beginning of the script with:
our @foundCertificates();
I have the following subroutine setup to parse through the output from the keytool to pull the certificate names and the date they are valid to:
sub parseResponse { my $out = shift; my $certname; my $validTo; my $retMonth; foreach my $line (split ("\n", $out)) { if ($line =~ m/^(Alias\sname:\s)(.+)/) { $certname = $2; #print "$certname\n"; } elsif ($line =~ m/^(Valid\sfrom:\s\w+\s)(\w+)\s(\d\d)\s(\d\d:\ +d\d:\d\d)\s\w+\s(\d+)\s(until:)\s\w+\s(\w+)\s(\d\d)\s(\d\d):(\d\d):(\ +d\d)\s\w+\s(\d\d\d\d)/) { $retMonth = &convertMonth($7); $validTo = timegm($11,$10,$9,$8,$retMonth,$12); #print "$validTo\n"; } } #print "$certname - $validTo\n"; }
I know that my regular expressions work as the script captures the three certificates in my keystore, but what I cannot figure out to do is how to push the $certname and the $validTo in the array as a pair. I am not sure what other information I can provide, but any help is greatly appreciated. Thanks, Scott

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Re: Looping through text and adding values to hash
by ww (Archbishop) on Jul 10, 2013 at 18:21 UTC

    If you don't have some un-stated reason for using a hash (narrative, paras 1 and 2), and can take an array (narrative, para3), you need merely concatenate the $certName and  $validTo vars into a single, third var that you then push to your array -- as a pair, perhaps separated by a space. Here are three slightly variant approaches:

    #!/usr/bin/perl use 5.016; my $certName = 'Hans'; my $validTo = '20130710'; my $thirdvar .= $certName; $thirdvar .= ' '; $thirdvar .= $validTo; say "\$thirdvar: $thirdvar \n"; my $fourthvar = "$certName, $validTo"; say "\$fourthvar: $fourthvar \n"; my $fifthvar = $certName . " " . $validTo; say "\$fifthvar: $fifthvar"; =head $thirdvar: Hans 20130710 $fourthvar: Hans, 20130710 $fifthvar: Hans 20130710 =cut
    If I've misconstrued your question or the logic needed to answer it, I offer my apologies to all those electrons which were inconvenienced by the creation of this post.

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