File Coverage

blib/lib/CLDR/Number/Format/Currency.pm

Criterion	Covered	Total	%
statement	53	56	94.6
branch	16	18	88.8
condition	14	21	66.6
subroutine	11	11	100.0
pod	1	1	100.0
total	95	107	88.7

package CLDR::Number::Format::Currency;

use v5.8.1;
use utf8;
use Carp;
use CLDR::Number::Constant qw( $C );
use CLDR::Number::Data::Currency;

use Moo;
use namespace::clean;

our $VERSION = '0.16';

with qw( CLDR::Number::Role::Format );

has currency_code => (
    is  => 'rw',
    isa => sub {
        croak 'uninitialized value'     if !defined $_[0];
        croak qq{invalid value "$_[0]"} if $_[0] !~ m{ ^ [A-Z]{3} $ }x;
    },
    coerce  => sub { defined $_[0] ? uc $_[0] : $_[0] },
    trigger => 1,
);

has currency_sign => (
    is  => 'rw',
    isa => sub {
        croak "currency_sign is not defined" if !defined $_[0];
    },
);

# TODO: accounting NYI
has accounting => (
    is      => 'rw',
    coerce  => sub { $_[0] ? 1 : 0 },
    default => 0,
);

has cash => (
    is      => 'rw',
    coerce  => sub { $_[0] ? 1 : 0 },
    trigger => 1,
    default => 0,
);

has _pattern_type => (
    is      => 'ro',
    default => 'currency',
);

after _trigger_locale => sub {
    my ($self) = @_;

    if ($self->currency_code) {
        $self->_build_currency_sign;
    }

    if (my $decimal = $self->_get_data(symbol => 'currency_decimal')) {
        $self->decimal_sign($decimal);
    }
};

sub BUILD {}

sub _trigger_currency_code {
    my ($self, $currency_code) = @_;

    $self->_build_currency_sign;
    $self->_trigger_cash;
}

sub _build_currency_sign {
    my ($self) = @_;
    my $data = $CLDR::Number::Data::Currency::LOCALES;
    my $currency_sign;

    return if $self->_has_init_arg('currency_sign');

    for my $locale (@{$self->_locale_inheritance}) {
        next if !exists $data->{$locale} || !exists $data->{$locale}{$self->currency_code};
        $currency_sign = $data->{$locale}{$self->currency_code};
        last;
    }

    $self->currency_sign($currency_sign || $self->currency_code);
}

sub _trigger_cash {
    my ($self) = @_;
    my $currencies = $CLDR::Number::Data::Currency::CURRENCIES;
    my $currency_data
        = $self->currency_code && exists $currencies->{$self->currency_code}
        ? $currencies->{$self->currency_code}
        : $currencies->{DEFAULT};

    if ($self->cash && exists $currency_data->{cash_digits}) {
        $self->minimum_fraction_digits($currency_data->{cash_digits});
        $self->maximum_fraction_digits($currency_data->{cash_digits});
    }
    else {
        $self->minimum_fraction_digits($currency_data->{digits});
        $self->maximum_fraction_digits($currency_data->{digits});
    }

    if ($self->cash && exists $currency_data->{cash_rounding}) {
        $self->rounding_increment($currency_data->{cash_rounding});
    }
    else {
        $self->rounding_increment($currency_data->{rounding});
    }
}

sub format {
    my ($self, $num) = @_;

    $num = $self->_validate_number(format => $num);
    return undef unless defined $num;

    croak 'Missing required attribute: currency_code'
        unless $self->currency_code;

    my $sign   = $self->currency_sign;
    my $format = $self->_format_number($num);

    # spacing before currency sign
    if ($sign =~ m{ ^ \PS }x && $format =~ m{ \d $C }x) {
        $sign = ' ' . $sign;
    }

    # spacing after currency sign
    if ($sign =~ m{ \PS $ }x && $format =~ m{ $C \d }x) {
        $sign .= ' ';
    }

    $format =~ s{$C}{$sign};

    return $format;
}

1;

__END__