From f94e20287e46b0e4ab7bf2432850cdf04a1a9d0d Mon Sep 17 00:00:00 2001 From: "ian%hixie.ch" Date: Fri, 5 Apr 2002 22:39:59 +0000 Subject: [PATCH] Adding Template Toolkit support. See http://www.template-toolkit.org/ for documentation on the template toolkit format. --- webtools/PLIF/PLIF/Service/TemplateToolkit.pm | 182 ++++++++++++++++++ 1 file changed, 182 insertions(+) create mode 100644 webtools/PLIF/PLIF/Service/TemplateToolkit.pm diff --git a/webtools/PLIF/PLIF/Service/TemplateToolkit.pm b/webtools/PLIF/PLIF/Service/TemplateToolkit.pm new file mode 100644 index 000000000000..cbcce1a67258 --- /dev/null +++ b/webtools/PLIF/PLIF/Service/TemplateToolkit.pm @@ -0,0 +1,182 @@ +# -*- Mode: perl; tab-width: 4; indent-tabs-mode: nil; -*- +# +# This file is MPL/GPL dual-licensed under the following terms: +# +# The contents of this file are subject to the Mozilla Public License +# Version 1.1 (the "License"); you may not use this file except in +# compliance with the License. You may obtain a copy of the License at +# http://www.mozilla.org/MPL/ +# +# Software distributed under the License is distributed on an "AS IS" +# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See +# the License for the specific language governing rights and +# limitations under the License. +# +# The Original Code is PLIF 1.0. +# The Initial Developer of the Original Code is Ian Hickson. +# +# Alternatively, the contents of this file may be used under the terms +# of the GNU General Public License Version 2 or later (the "GPL"), in +# which case the provisions of the GPL are applicable instead of those +# above. If you wish to allow use of your version of this file only +# under the terms of the GPL and not to allow others to use your +# version of this file under the MPL, indicate your decision by +# deleting the provisions above and replace them with the notice and +# other provisions required by the GPL. If you do not delete the +# provisions above, a recipient may use your version of this file +# under either the MPL or the GPL. + +package PLIF::Service::TemplateToolkit; +use strict; +use vars qw(@ISA); +use PLIF::Service; +@ISA = qw(PLIF::Service); +1; + +sub provides { + my $class = shift; + my($service) = @_; + return ($service eq 'string.expander.TemplateToolkit' or + $service eq 'string.expander.TemplateToolkitCompiled' or + $class->SUPER::provides($service)); +} + +sub init { + my $self = shift; + my($app) = @_; + $self->SUPER::init(@_); + require Template; import Template; # DEPENDENCY +} + +sub expand { + my $self = shift; + my($app, $output, $session, $protocol, $string, $data, $type) = @_; + local $Template::Config::STASH = 'Template::Stash'; # Don't use Template::Stash::XS as we can't currently get a hash back out of it + my $template = Template->new({ + 'CONTEXT' => PLIF::Service::TemplateToolkit::Context->new($app, $output, $session, $protocol), + }); + my $document; + if ($type eq 'TemplateToolkitCompiled') { + # what we have here is a potential Template::Document + # let's try to evaluate it + $document = eval $string; + $self->assert(not(defined($@)), 1, "Error loading compiled template: $@"); + } else { # $type eq 'TemplateToolkit' + # what we have is a raw string + $document = \$string; + } + # ok, let's try to process it + my $result = ''; + $self->assert($template->process($document, $data, \$result), 1, 'Error processing template: '.$template->error()); # XXX assumes ltr argument evaluation + return $result; +} + + +package PLIF::Service::TemplateToolkit::Context; +use strict; +use vars qw(@ISA); +use Template::Context; +@ISA = qw(Template::Context); +1; + +# subclass the real Context so that we go through PLIF for everything +sub new { + my $class = shift; + my($app, $output, $session, $protocol) = @_; + my $self = $class->SUPER::new({}); + if (defined($self)) { + $self->{'__PLIF__app'} = $app; + $self->{'__PLIF__output'} = $output; # unused (it's a handle to the dataSource.strings service but we look one up instead of using it directly) + $self->{'__PLIF__session'} = $session; + $self->{'__PLIF__protocol'} = $protocol; + } # else failed + return $self; +} + +# compile a template +sub template { + my $self = shift; + my($text) = @_; + $self->{'__PLIF__app'}->assert(ref($text), 1, 'Internal error: tried to compile a template by name instead of going through normal channels (security risk)'); + return $self->SUPER::template(@_); +} + +# insert another template +sub process { + my $self = shift; + my($strings, $params) = @_; + + # support multiple files for compatability with Template::Context->process() + if (ref($strings) ne 'ARRAY') { + $strings = [$strings]; + } + + # get data source + my $app = $self->{'__PLIF__app'}; + my $session = $self->{'__PLIF__session'}; + my $protocol = $self->{'__PLIF__protocol'}; + my $dataSource = $self->{'__PLIF__app'}->getService('dataSource.strings'); + + # expand strings and append + my $result = ''; + foreach my $string (@$strings) { + if (ref($string)) { + # probably already compiled + $result .= $self->SUPER::process($string, $params); + } else { + $result .= $dataSource->getExpandedString($app, $session, $protocol, $string, $self->{'STASH'}); + } + } + + return $result; +} + +# insert another template but protecting the stash +sub include { + my $self = shift; + my($strings, $params) = @_; + + # localise the variable stash with any parameters passed + my $stash = $self->{'STASH'}; + $self->{'STASH'} = $self->{'STASH'}->clone($params); + + # defer to process(), above + my $result = eval { $self->process($strings, $params); }; + my $error = $@; + + # delocalise the variable stash + $self->{'STASH'} = $self->{'STASH'}->declone(); + + # propagate any error + if (ref($error) or ($error ne '')) { + die $error; + } + + return $result; +} + +# insert a string regardless of what it is without expanding it +sub insert { + my $self = shift; + my($strings) = @_; + + # support multiple files for compatability with Template::Context->insert() + if (ref($strings) ne 'ARRAY') { + $strings = [$strings]; + } + + # get data source + my $app = $self->{'__PLIF__app'}; + my $session = $self->{'__PLIF__session'}; + my $protocol = $self->{'__PLIF__protocol'}; + my $dataSource = $self->{'__PLIF__app'}->getService('dataSource.strings'); + + # concatenate the files + my $result = ''; + foreach my $string (@$strings) { + my($type, $version, $data) = $dataSource->getString($app, $session, $protocol, $string); + $result .= $data; + } + + return $result; +}