File Coverage

blib/lib/DTL/Fast/Filter/Getdigit.pm

Criterion	Covered	Total	%
statement	24	24	100.0
branch	4	6	66.6
condition	2	6	33.3
subroutine	6	6	100.0
pod	0	2	0.0
total	36	44	81.8

package DTL::Fast::Filter::Getdigit;
use strict; use utf8; use warnings FATAL => 'all';
use parent 'DTL::Fast::Filter';

$DTL::Fast::FILTER_HANDLERS{'get_digit'} = __PACKAGE__;

#@Override
sub parse_parameters
{
    my $self = shift;
    die $self->get_parse_error("no digit number specified")
        if not scalar @{$self->{'parameter'}};
    $self->{'digit'} = $self->{'parameter'}->[0];
    return $self;
}

#@Override
sub filter
{
    my ($self, $filter_manager, $value, $context) = @_;

    my $digit = $self->{'digit'}->render($context);
    if(
        $value =~ /^\d+$/
        and $digit =~ /^\d+$/
        and $digit > 0
    )
    {
        if( length $value >= $digit )
        {
            $value = substr $value, -$digit, 1;
        }
        else
        {
            $value = '';
        }
    }

    return $value;
}

1;