#!/usr/bin/perl -w

use strict;
use Data::Dumper;
use diagnostics -verbose;

use constant PART => 0;
use constant REV  => 1;

#This is where the user will enter the Part Number and Revision Level

print "Enter the Part Number you wish to search for: ";
my $part = <STDIN>;
chomp $part;


while (!$part){ # while $PartNumber is empty keep asking
    
       print "PartNumber? ";
       $part = <STDIN>;
       chomp($part);

}

print "Enter the Revision for ($part): ";
my $rev = <STDIN>;
chomp $rev;

while (!$rev){ # while $rev is empty keep asking
    
       print "Revision? ";
       $rev = <STDIN>;
       chomp($rev);

}

my $searchresult = search( part     => $part,
               rev      => $rev,
               filename => './file.db',
               );

print ref  $searchresult
  ? "Located Part Number: @{[join ':', @$searchresult ]}\n" # print th
+e part number and the records
  : "Your Part Number ($part) Rev ($rev) could not be found....\n"; #p
+rint if part number or rev is invalid


# subroutine that takes the arguments from my $searchresult and checks
# the text file for a matching part number and revision level
sub search  {
    my %args = @_;
    my $retval;


    local *PARTS_DB;
    open PARTS_DB, $args{filename} or die  "Cannot open file $args{fil
+ename}: $!";
    while (my $record = <PARTS_DB>)  {
        chomp $record;
        my @record = split /\|/, $record;
        next unless $record[PART] eq $args{part}
        and $record[REV] eq $args{rev};

        close PARTS_DB or die  "Can't close PARTS_DB $args{filename}: 
+$!";
        return \ @record;
    }
}
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"Yet what are all such gaieties to me

Whose thoughts are full of indices and surds?"

quotes the Lama