File Coverage

blib/lib/Dancer/Template/TemplateToolkit.pm

Criterion	Covered	Total	%
statement	78	87	89.6
branch	30	48	62.5
condition	13	27	48.1
subroutine	13	14	92.8
pod	7	7	100.0
total	141	183	77.0

package Dancer::Template::TemplateToolkit;
our $AUTHORITY = 'cpan:SUKRIA';
#ABSTRACT: Template Toolkit wrapper for Dancer
$Dancer::Template::TemplateToolkit::VERSION = '1.3514_04'; # TRIAL
$Dancer::Template::TemplateToolkit::VERSION = '1.351404';
use strict;
use warnings;
use Carp;
use Dancer::Config 'setting';
use Dancer::ModuleLoader;
use Dancer::Exception qw(:all);

use base 'Dancer::Template::Abstract';

my $_engine;

sub init {
    my ($self) = @_;

    my $class = $self->config->{subclass} || "Template";
    raise core_template => "$class is needed by Dancer::Template::TemplateToolkit"
      if !$class->can("process") and !Dancer::ModuleLoader->load($class);

    my $charset = setting('charset') || '';
    my @encoding = length($charset) ? ( ENCODING => $charset ) : ();

    my $is_subclass = $class ne 'Template';

    my @anycase  = $is_subclass ? () : ( ANYCASE  => 1 );
    my @absolute = $is_subclass ? () : ( ABSOLUTE => 1 );

    my @inc_path = $is_subclass ? ()
        : ( INCLUDE_PATH => $self->config->{INCLUDE_PATH} || setting('views') );

    my $start_tag = $is_subclass
        ? $self->config->{start_tag}
        : $self->config->{start_tag} || '<%';

    my $stop_tag = $is_subclass
        ? $self->config->{stop_tag} || $self->config->{end_tag}
        : $self->config->{stop_tag} || $self->config->{end_tag} || '%>';

    # TT expects quotemeta()'ed values here to be used as-is within
    # its regexp-based tokenizer. To support existing Dancer users who
    # prefer the default TT tags and who've already figured this out,
    # let's skip this if the tags are already ok.
    # Just FYI: TT hardcodes '\[%' and '%\]' as default.
    #
    my @start = ();
    if (defined $start_tag) {
        @start = ( START_TAG => $start_tag eq '\[%' || $start_tag eq '\[\%'
            ? $start_tag
            : quotemeta($start_tag)
        );
    }
    my @stop = ();
    if (defined $stop_tag) {
        @stop = ( END_TAG => $stop_tag eq '%\]' || $stop_tag eq '\%\]'
            ? $stop_tag
            : quotemeta($stop_tag)
        );
    }
    my @embedded = ();
    if ($self->config->{embedded_templates}) {
	Dancer::ModuleLoader->load('Template::Provider::FromDATA')
	    or croak "The Package Template::Provider::FromDATA must be installed to use embedded_templates";

	@embedded = ( LOAD_TEMPLATES => [Template::Provider::FromDATA->new()] );
    }

    my $tt_config = {
        @anycase,
        @absolute,
        @encoding,
        @inc_path,
        @start,
        @stop,
        @embedded,
        %{$self->config},
    };

    $_engine = $class->new(%$tt_config);
}

sub set_wrapper {
	my ($self, $when, $file) = @_;
	my $wrappers = $_engine->{SERVICE}->{WRAPPER};
	unless (defined $file) {
		$file = $when;
		my @orig = @$wrappers;
        $self->{orig_wrappers} = \@orig;
		@$wrappers = ($file);
        return;
	}
	if ($when eq 'outer') {
        unshift @$wrappers => $file;
    } elsif ($when eq 'inner') {
        push @$wrappers => $file;
    } else {
        raise core_template => "'$when' isn't a valid identifier";
    }
}

sub reset_wrapper {
    my ($self) = @_;
	my $wrappers = $_engine->{SERVICE}->{WRAPPER};
    my $orig = $self->{orig_wrappers} || [];
    my @old = @$wrappers;
    @$wrappers = @$orig;
    return @old;
}

sub unset_wrapper {
    my ($self, $when) = @_;
	my $wrappers = $_engine->{SERVICE}->{WRAPPER};
	if ($when eq 'outer') {
        return shift @$wrappers;
    } elsif ($when eq 'inner') {
        return pop @$wrappers;
    } else {
        raise core_template => "'$when' isn't a valid identifier";
    }
}

sub render {
    my ($self, $template, $tokens) = @_;

    $self->view_exists($template) or raise core_template => "'$template' doesn't exist or not a regular file";

    my $content = "";
    my $charset = setting('charset') || '';
    my @options = length($charset) ? ( binmode => ":encoding($charset)" ) : ();
    $_engine->process($template, $tokens, \$content, @options) or raise core_template => $_engine->error;
    return $content;
}

sub view_exists {
    my ($self, $view) = @_;

    return 1 if ref $view;

    if ($self->config->{embedded_templates}) {
	eval {
	    $_engine->context->template($view);
	};
	return ! $@;
    }

    return -f $view;
}

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

    if ($self->config->{embedded_templates}) {
	return $view;
    }
    else {
	$self->SUPER::view($view);
    }
}

1;

__END__