Re^2: Arranging multiple lines

Thank you very much hdb,

but again you have to forgive my ignorance on this, I got lost in incorporating your code with input and output file arguments. :(

Please bear with me, I just started studying perl 2 days ago.

use strict;
use warnings;

my $infile = $ARGV[0];
my $outfile = $ARGV[1];

open my $in,   "<",  $infile       or die $!;
open my $out, ">", $outfile    or die $!;

sub printdata {
        my $data = shift;
        $$data{"User-Agent"} //= "--";
        print join "|", @$data{ ( "Arrival Time", "From", "To", "User-
+Agent" ) };
        print "\n\n";
        %$data = ();
}

my %data;
my ($item, $value);
print "Arrival Time|From|To|User-Agent\n\n";
while(<$in>){
        chomp;
        next unless ($item, $value) = /^(.*?): (.*)/;
        printdata \%data if $item eq "Arrival Time" and %data;
        $data{$item} = $value;
}
printdata \%data;

close $in;
close $out;
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Re^3: Arranging multiple lines by hdb (Monsignor) on Jun 03, 2013 at 13:13 UTC
One way to do it is to pass the `$out` handle into the printdata function. Beware of commata after $out in this example: use strict; use warnings; sub printdata { my $out = shift; my $data = shift; $$data{"User-Agent"} //= "--"; print $out join "\|", @$data{ ( "Arrival Time", "From", "To", "User +-Agent" ) }; print $out "\n\n"; %$data = (); } open my $out, ">", "tmp.txt"; my %data; my ($item, $value); print $out "Arrival Time\|From\|To\|User-Agent\n\n"; while(<DATA>){ chomp; next unless ($item, $value) = /^(.?): (.)/; printdata $out, \%data if $item eq "Arrival Time" and %data; $data{$item} = $value; } printdata $out, \%data; [download] Alternatively, you could assemble a string in `printdata`, return it from the sub and print later.	[reply] [d/l] [select]

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Re^3: Arranging multiple lines
by hdb (Monsignor) on Jun 03, 2013 at 13:13 UTC

One way to do it is to pass the $out handle into the printdata function. Beware of commata after $out in this example:

use strict;
use warnings;

sub printdata {
    my $out = shift;
    my $data = shift;
    $$data{"User-Agent"} //= "--";
    print $out join "|", @$data{ ( "Arrival Time", "From", "To", "User
+-Agent" ) };
    print $out "\n\n";
    %$data = ();
}

open my $out, ">", "tmp.txt";

my %data;
my ($item, $value);
print $out "Arrival Time|From|To|User-Agent\n\n";
while(<DATA>){
    chomp;
    next unless ($item, $value) = /^(.*?): (.*)/;
    printdata $out, \%data if $item eq "Arrival Time" and %data;
    $data{$item} = $value;
}
printdata $out, \%data;
[download]

Alternatively, you could assemble a string in printdata, return it from the sub and print later.

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