open(INFILE, "products-id.txt")|| die "Cannot open products-id.txt file"; 
open (OUTPUT,">$output") or die ("Can't open file $output $!");

chomp(my @ProductArray = map { /^\s*$/ ? () : $_ } <INFILE>);
close (INFILE);

foreach my $line(@ProductArray)
{
  my ($Category, $ID, $Name, $Type, $Size) = split( / /, $line );

  %AllProducts = ($Category => [$ID, [$Name, $Type, $Size]]);

print OUTPUT Dumper(\%AllProducts);

}