@main::fields = split(/\|/, $_);

##</code><code>##

#!/usr/bin/perl -w
use strict;

sub get_part_num {
  my $part;
  while (!defined $part || $part =~ /[^0-9]/) {
    print "Part Number? (None to exit) ";
    chomp( $part = <STDIN> );
  }
  die "Program terminated.\n" if $part eq "";
  return $part;
}

sub search {
  my ($file, $part) = @_;
  my $found_match = 0;

  open my $db, "<$file" or die "Could not read file: $!";

  while (<$db>) {
    chomp;
    my @fields = split(/\|/, $_);

    if ($fields[0] eq $part) {
      ++$found_match;
      found_match(@fields);
      last;
    }
  }
  no_match($part) if $found_match == 0;
}

sub found_match {
  my ($part_num, @data) = @_;

  print "Part $part_num found: \n\t",
    join("\n\t", @data), "\n";
}

sub no_match {
  my $part_num = shift;
  print "Part #$part_num was not found in the database.\n";
}

search( 'fai.txt', get_part_num() );