Windows type ini file modification

Hi,

I have some code, which is used to get the values  for a windows type ini file.
My code works fine. I would like to Modify the program according to the option or brand choice.
This is my code ..........
--------------
#!/usr/bin/perl

use strict;
use warnings;

my $brand = shift || die "Must give a brand\n";

my %data;
while (<DATA>) {
  chomp;
  next unless /^\[$brand\]$/ .. !/\S/;

  next if /^\[/;
  next unless /\S/;

  my ($k, $v) = split /\s*=\s*/, $_, 2;

  $data{$k} = $v;
}

foreach (keys %data) {
  print "$_ => $data{$_}\n";
}

This is my config file.... (logins_test_1.cfg)
------------------------------------
[NEWBRAND]

#LOGIN FOR THAT PARTICULAR BRAND
#Get the LOgin and Password according to Brand
[AN]
LOGIN = H006698
PASSWORD = $"?Y??

[AZ]
LOGIN = H006699
PASSWORD = ???S?

[CL]
LOGIN = H007985
PASSWORD = 8?|?E?0

[CM]
LOGIN = H006897
PASSWORD = $"?Y??

[CU]
LOGIN = H006701
PASSWORD = $"?Y??

[GM]
LOGIN = H006703
PASSWORD = 8?|?E?0

 ------------------------------

Suppose if i want to Edit the values for brand or option say [CM] with another set of LOGIN and PASSWORD.... How can i do that?

My next Question is , How to add New Brand say[ZZ] in this file, by making use of two functiions .
1. function to Add LOGIN (will pass 2 arguments say brand and login)
2, function to Add PASSWORD ((will pass 2 arguments say brand and password)


I tried as follows and its working:

$brand = "MO";
$userid="john";
$password="test";
&add_user_id($brand,$userid);
&add_password($brand,$password);
sub add_user_id
{

#------------------------------------------------------------------------------



      

      my ($brand,$uid) = @_;
      
      my ($ok,$ans,$flag);
      $ans = read_config_file($brand);
      
      print "Here ... $ans\n";

      
      if($ans > 0)
      {
       #$ok = "Can not Add userid... Already Exists!!";
      $flag = 0;
      }
      else
      {
      $ok = $uid;
      $flag = 1;

      open(FH,">>logins_test_1.cfg");      
      flock(FH,2);
      print FH "[".$brand."]";
      print FH "\n";
      print FH "LOGIN = ".$ok;
      print FH "\n";
      flock(FH,8);
      close(FH);
      
      }
      #return ($ok,$flag,$brand);

      return $ok;


}

#------------------------------------------------------------------------------



#------------------------------------------------------------------------------

sub add_password {

#------------------------------------------------------------------------------



      my ($brand,$pwd) = @_;

      my $ok1;
      
      if($ok1)
      {
      $flag = 1;
      open(FH,">>logins_test_1.cfg");      
      flock(FH,2);
      print FH "PASSWORD = ".$ok1;
      print FH "\n";
      flock(FH,8);
        close(FH);
      }
      else
      {
      print "Error ...Can not encrypt the Password\n";
      $flag = 0;
      }      
            
      return $ok1;



}


I would like to Store the Password under the brand. Please help me to do that

Regards,
r_k