Good day to All!

Hope all is well with everyone. I just would like to ask for some help with a few items with my code. I am trying compare 2 CSV files and print/display their differences. So far, it is working up to that point.

My problem now are the following:

I would like to group the records in such a way that

- It groups the unmatched records together

- Display the row number corresponding to these records row position from the file

- A comma is used as a separator

Unfortunately, I am unable to do them. Below is a sample data and a sample of what is currently happening and how I want it to appear.

Here is a sample of my data:



FILE 1 Content:

NAME,SURNAME,AGE,GENDER

PAUL,SMITH,28,MALE

RICK,SULLIVAN,31,MALE

SILVIA,CONOR,24,FEMALE

VANI,LOVE,26,FEMALE



FILE 2 Content:

NAME,SURNAME,AGE,GENDER

PAUL,SMITH,28,MALE

RICK,SULLIVAN,30,MALE < -- this row contains a mismatch

SILVIA,CONOR,24,MALE < -- this row contains a mismatch

VANI,LOVE,26,FEMALE



These 2 files are expected to have the same contents



CURRENT OUTPUT:

-------------------------------------------------------------

Row 1 – RICKSULLIVAN31MALE

Row 2 – SILVIACONOR24FEMALE

Row 3 – RICKSULLIVAN30MALE

Row 4 – SILVIACONOR24MALE

-------------------------------------------------------------



Note: I am aware that using print $count++ causes the row number just to increment. I just want to see how it would look like on my output.



EXPECTED OUTPUT:

-------------------------------------------------------------

Row 3 – RICK,SULLIVAN,31,MALE

Row 3 – RICK,SULLIVAN,30,MALE



Row 4 – SILVIA,CONOR,24,FEMALE

Row 4 – SILVIA,CONOR,24,MALE

-------------------------------------------------------------

Thanks in advance!

Here is the code:

#! /usr/bin/perl
use strict;
use warnings;
my @arr1;
my @arr2;
my $a;

#COMPARE 2 FILES
open(FIL,'FILE1.CSV') or die "$!";
#open(FIL,$file) or die "$!";
while (<FIL>)
     {
        $a=$_; $a =~ s/[\t;, ]*//g; push @arr1, $a if ($a ne  '');
     };
close(FIL);


open(FIL,'FILE2.csv') or die "$!";
while (<FIL>)
     {
        $a=$_; $a =~ s/[\t;, ]*//g; push @arr2, $a if ($a ne  '');
     };
close(FIL);

my %arr1hash;
my %arr2hash;
my @diffarr;
foreach(@arr1) {$arr1hash{$_} = 1; }
foreach(@arr2) {$arr2hash{$_} = 1; }

foreach $a(@arr1)
{
    if (not defined($arr2hash{$a})) 
     {
        push @diffarr, $a;
     }
}

foreach $a(@arr2)
{
    if (not defined($arr1hash{$a})) 
     {
        push @diffarr, $a;
     }
}

my $dir = '/perl/test/run';
opendir(DIR, $dir) or die $!;
while (my $file = readdir(DIR)) 
{
        next unless (-f "$dir/$file");
        next unless ($file =~ m/\.csv$/);
        print "\n";
        printf "Source: $file "; print "\n";
        
        my $count=1;
        foreach $a(@diffarr)
        {
            print "Item "; print $count++ ; print " - ";
            print ($a); 
        }        
}
print "\n";
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