File Coverage

blib/lib/Algorithm/CheckDigits/MBase_001.pm

Criterion	Covered	Total	%
statement	44	49	89.8
branch	9	16	56.2
condition	1	3	33.3
subroutine	11	11	100.0
pod	4	5	80.0
total	69	84	82.1

package Algorithm::CheckDigits::MBase_001;

use 5.006;
use strict;
use warnings;
use integer;

use version; our $VERSION = 'v1.3.4';

our @ISA = qw(Algorithm::CheckDigits);

sub new {
	my $proto = shift;
	my $type  = shift;
	my $class = ref($proto) || $proto;
	my $self  = bless({}, $class);
	$self->{type} = lc($type);
	return $self;
} # new()

sub is_valid {
	my ($self,$number) = @_;
	if ($number =~ /^(\d+)(\d)$/) {
		return $2 == $self->_compute_checkdigit($1);
	}
	return ''
} # is_valid()

sub complete {
	my ($self,$number) = @_;
	if ($number =~ /^\d+$/) {
		return  $number . $self->_compute_checkdigit($number);
	}
	return '';
} # complete()

sub basenumber {
	my ($self,$number) = @_;
	if ($number =~ /^(\d+)(\d)$/) {
		return $1 if ($2 == $self->_compute_checkdigit($1));
	}
	return '';
} # basenumber()

sub checkdigit {
	my ($self,$number) = @_;
	if ($number =~ /^(\d+)(\d)$/) {
		return $2 if ($2 == $self->_compute_checkdigit($1));
	}
	return '';
} # checkdigit()

sub _compute_checkdigit {
	my $self   = shift;
	my $number = shift;

	if ($number =~ /^\d+$/) {

		my @digits = split(//,$number);
		my $sum    = 0;
		my $even   = 0;

		for (my $i = 0; $i <= $#digits; $i++) {

			if ($even) {
				$sum += $digits[$i];
			} else {
				$sum += 3 * $digits[$i];
			}
			$even = not $even;
		}
		return (10 - ($sum % 10)) % 10;
	}
	return -1;
} # _compute_checkdigit()

# Preloaded methods go here.

1;
__END__