File Coverage

blib/lib/Algorithm/CheckDigits/M11_002.pm

Criterion	Covered	Total	%
statement	45	50	90.0
branch	9	18	50.0
condition	1	3	33.3
subroutine	11	11	100.0
pod	4	5	80.0
total	70	87	80.4

package Algorithm::CheckDigits::M11_002;

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

use version; our $VERSION = 'v1.3.5';

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 ($number =~ /^(.+)(.)$/) {
		return uc($2) eq $self->_compute_checkdigit($1);
	}
	return ''
} # is_valid()

sub complete {
	my ($self,$number) = @_;
	if ($number =~ /^[0-9]+$/) {
		my $cd = $self->_compute_checkdigit($number);
		return $number . $cd unless 0 > $cd;
	}
	return '';
} # complete()

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

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

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

	if ($number =~ /^[-0-9]+$/) {

		$number =~ s/-//g;
		my @digits = split(//,$number);
		my $sum    = 0;
		my $weight = 2;

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

			$sum += $weight * $digits[$i];
			++$weight;

		}
		$sum %= 11;
		return 10 == $sum ? -1 : $sum;
	}
	return -1;
} # _compute_checkdigit()

# Preloaded methods go here.

1;
__END__