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|
use strict;
package HTML::FormFu::Localize;
# ABSTRACT: Localization
$HTML::FormFu::Localize::VERSION = '2.07';
use warnings;
use HTML::FormFu::Util qw( require_class );
use List::Util 1.33 qw( any );
use List::MoreUtils qw( pairwise );
use Scalar::Util qw( weaken isweak blessed );
use Exporter qw( import );
use Carp qw( croak );
our @EXPORT = qw(
localize
add_localize_object
add_localize_object_from_class
get_localize_object_from_class
get_localize_object_dies_on_missing_key
add_default_localize_object
get_localize_object
);
sub localize {
my ( $self, @original_strings ) = @_;
@original_strings = grep {defined} @original_strings;
if ( !$self->{has_default_localize_object} ) {
$self->add_default_localize_object;
}
my @localized_strings;
foreach my $localize_data ( @{ $self->{localize_data} } ) {
my $localize_object = $self->get_localize_object($localize_data);
eval {
@localized_strings = $localize_object->localize(@original_strings);
};
next if $@;
# NOTE:
# As FormFu uses L10N to return messages based on artificial message
# ids (instead of english language as message ids) the assumption
# that we just got a result from Locale::Maketext with AUTO = 1 seems
# to be safe when localize returns the same string as handed over.
if ( !$localize_data->{dies_on_missing_key}
&& scalar(@original_strings) == scalar(@localized_strings)
&& scalar( any { !$_ } pairwise { $a eq $b } @original_strings,
@localized_strings ) == 0
)
{
next;
}
last if @localized_strings;
}
if ( !@localized_strings ) {
@localized_strings = @original_strings;
}
return wantarray ? @localized_strings : $localized_strings[0];
}
sub add_localize_object {
my ( $self, @objects ) = @_;
croak 'no arguments given' if @_ < 2;
foreach my $localize_object (@objects) {
my $dies_on_missing_key = undef;
if ( blessed $localize_object) {
$dies_on_missing_key
= $self->get_localize_object_dies_on_missing_key(
$localize_object);
}
# add external localize object to the end of the list
push @{ $self->{localize_data} },
{
localize_object => $localize_object,
dies_on_missing_key => $dies_on_missing_key,
};
if ( !exists $self->{weaken_localize_object}
|| $self->{weaken_localize_object} != 0
&& !isweak @{ $self->{localize_data} }[-1]->{localize_object} )
{
weaken @{ $self->{localize_data} }[-1]->{localize_object};
}
else {
delete $self->{weaken_localize_object};
}
}
return $self;
}
sub add_localize_object_from_class {
my ( $self, @class ) = @_;
$self->{weaken_localize_object} = 0;
return $self->add_localize_object(
map { $self->get_localize_object_from_class($_) } @class );
}
sub get_localize_object_from_class {
my ( $self, $class ) = @_;
require_class($class);
my $languages = $self->languages;
return $class->get_handle(@$languages);
}
sub get_localize_object_dies_on_missing_key {
my ( $self, $localize_object ) = @_;
# NOTE:
# Findout how this class reacts on missing entries
# this is an issue with catalyst and po-style localization
# (in pm-style localization, you could set
# $Hello::I18N::en::Lexicon{_AUTO} = 0;
# to avoid autocreating missing keys)
# HINT:
# Never use underscores for the beginning of the testkey as they
# will lead Locale::Maketext to croak even if _AUTO is on (1) as
# Locale::Maketext useses underscores to identify text for
# processing via the AUTO-function (_compile).
my $testkey = 'html_formfu_missing_key_test';
eval { $localize_object->localize($testkey) };
my $dies_on_missing_key = $@ ? 1 : 0;
return $dies_on_missing_key;
}
sub add_default_localize_object {
my ($self) = @_;
my $localize_object
= $self->get_localize_object_from_class( $self->localize_class );
my $dies_on_missing_key = 1;
# put FormFu localize object in first place
unshift @{ $self->{localize_data} },
{
localize_object => $localize_object,
dies_on_missing_key => $dies_on_missing_key,
};
$self->{has_default_localize_object} = 1;
return $self;
}
sub get_localize_object {
my ( $self, $localize_data ) = @_;
if ( !blessed $localize_data->{localize_object} ) {
$localize_data->{localize_object}
= $self->get_localize_object_from_class( $self->localize_class );
$localize_data->{dies_on_missing_key}
= $self->get_localize_object_dies_on_missing_key(
$localize_data->{localize_object} );
}
return $localize_data->{localize_object};
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
HTML::FormFu::Localize - Localization
=head1 VERSION
version 2.07
=head1 AUTHOR
Carl Franks <cpan@fireartist.com>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2018 by Carl Franks.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
