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# Copyright (C) 2008-2010, Sebastian Riedel.
package Mojolicious::Plugin::EpRenderer;
use strict;
use warnings;
use base 'Mojolicious::Plugin';
use Mojo::ByteStream 'b';
use Mojo::Template;
# What do you want?
# I'm here to kick your ass!
# Wishful thinking. We have long since evolved beyond the need for asses.
sub register {
my ($self, $app, $conf) = @_;
# Config
$conf ||= {};
my $name = $conf->{name} || 'ep';
my $template = $conf->{template} || {};
# Auto escape by default to prevent XSS attacks
$template->{auto_escape} = 1 unless defined $template->{auto_escape};
# Add "ep" handler
$app->renderer->add_handler(
$name => sub {
my ($r, $c, $output, $options) = @_;
# Generate name
return unless my $path = $r->template_path($options);
my $list = join ', ', sort keys %{$c->stash};
my $cache = $options->{cache} =
b("$path($list)")->md5_sum->to_string;
# Stash defaults
$c->stash->{layout} ||= undef;
# Reload
delete $r->{_epl_cache} if $ENV{MOJO_RELOAD};
local $ENV{MOJO_RELOAD} = 0 if $ENV{MOJO_RELOAD};
# Cache
$r->{_epl_cache} ||= {};
unless ($r->{_epl_cache}->{$cache}) {
# Debug
$c->app->log->debug(
qq/Caching template "$path" with stash "$list"./);
# Initialize
$template->{namespace} ||= "Mojo::Template::$cache";
my $mt = $r->{_epl_cache}->{$cache} =
Mojo::Template->new($template);
# Self
my $prepend = 'my $self = shift;';
# Weaken
$prepend .= q/use Scalar::Util 'weaken'; weaken $self;/;
# Be a bit more relaxed for helpers
$prepend .= q/no strict 'refs'; no warnings 'redefine';/;
# Helpers
$prepend .= 'my $_H = $self->app->renderer->helper;';
for my $name (sort keys %{$r->helper}) {
next unless $name =~ /^\w+$/;
$prepend .= "sub $name; *$name = sub { ";
$prepend .= "return \$_H->{'$name'}->(\$self, \@_) };";
}
# Be less relaxed for everything else
$prepend .= q/use strict; use warnings;/;
# Stash
for my $var (keys %{$c->stash}) {
next unless $var =~ /^\w+$/;
$prepend .= " my \$$var = \$self->stash->{'$var'};";
}
# Prepend
$mt->prepend($prepend);
}
# Render with epl
return $r->handler->{epl}->($r, $c, $output, $options);
}
);
# Set default handler
$app->renderer->default_handler('ep');
}
1;
__END__
=head1 NAME
Mojolicious::Plugin::EpRenderer - EP Renderer Plugin
=head1 SYNOPSIS
# Mojolicious
$self->plugin('ep_renderer');
$self->plugin(ep_renderer => {name => 'foo'});
$self->plugin(ep_renderer => {template => {line_start => '.'}});
# Mojolicious::Lite
plugin 'ep_renderer';
plugin ep_renderer => {name => 'foo'};
plugin ep_renderer => {template => {line_start => '.'}};
=head1 DESCRIPTION
L<Mojolicous::Plugin::EpRenderer> is a renderer for C<ep> templates.
=head1 TEMPLATES
C<ep> or C<Embedded Perl> is a simple template format where you embed perl
code into documents.
It is based on L<Mojo::Template>, but extends it with some convenient syntax
sugar designed specifically for L<Mojolicious>.
It supports L<Mojolicious> template helpers and exposes the stash directly as
perl variables.
=head1 OPTIONS
=head2 C<name>
# Mojolicious::Lite
plugin ep_renderer => {name => 'foo'};
=head2 C<template>
# Mojolicious::Lite
plugin ep_renderer => {template => {line_start => '.'}};
=head1 METHODS
L<Mojolicious::Plugin::EpRenderer> inherits all methods from
L<Mojolicious::Plugin> and implements the following new ones.
=head2 C<register>
$plugin->register;
Register renderer in L<Mojolicious> application.
=head1 SEE ALSO
L<Mojolicious>, L<Mojolicious::Guides>, L<http://mojolicious.org>.
=cut
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