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[DependencyInjection] added an extension for the Symfony Templating Component
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‎src/Symfony/Components/DependencyInjection/Loader/Extension/SymfonyTemplatingExtension.php

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<?php
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namespace Symfony\Components\DependencyInjection\Loader\Extension;
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use Symfony\Components\DependencyInjection\Loader\LoaderExtension;
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use Symfony\Components\DependencyInjection\Loader\XmlFileLoader;
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use Symfony\Components\DependencyInjection\BuilderConfiguration;
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use Symfony\Components\DependencyInjection\Reference;
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/*
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* This file is part of the symfony framework.
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*
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* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
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*
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* This source file is subject to the MIT license that is bundled
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* with this source code in the file LICENSE.
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*/
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/**
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* SymfonyTemplatingExtension is an extension for the Symfony Templating Component.
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*
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* @package symfony
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* @subpackage dependency_injection
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* @author Fabien Potencier <fabien.potencier@symfony-project.com>
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*/
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class SymfonyTemplatingExtension extends LoaderExtension
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{
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/**
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* Loads the template configuration.
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*
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* @param array $config A configuration array
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*
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* @return BuilderConfiguration A BuilderConfiguration instance
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*/
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public function templatingLoad($config)
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{
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$configuration = new BuilderConfiguration();
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$loader = new XmlFileLoader(__DIR__.'/xml/symfony');
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$configuration->merge($loader->load('templating-1.0.xml'));
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// path for the filesystem loader
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if (isset($config['path']))
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{
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$configuration->setParameter('symfony.templating.loader.filesystem.path', $config['path']);
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}
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// loaders
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if (isset($config['loader']))
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{
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$loaders = array();
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$ids = is_array($config['loader']) ? $config['loader'] : array($config['loader']);
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foreach ($ids as $id)
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{
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$loaders[] = new Reference($id);
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}
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}
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else
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{
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$loaders = array(
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new Reference('symfony.templating.loader.filesystem'),
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);
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}
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$configuration->setParameter('symfony.templating.loader.chain.loaders', $loaders);
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$configuration->setAlias('symfony.templating.loader', 'symfony.templating.loader.chain');
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// helpers
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if (isset($config['helper']))
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{
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$helpers = array();
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$ids = is_array($config['helper']) ? $config['helper'] : array($config['helper']);
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foreach ($ids as $id)
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{
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$helpers[] = new Reference($id);
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}
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}
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else
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{
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$helpers = array(
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new Reference('symfony.templating.helper.javascripts'),
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new Reference('symfony.templating.helper.stylesheets'),
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);
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}
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$configuration->setParameter('symfony.templating.helpers', $helpers);
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// cache?
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if (isset($config['cache']))
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{
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// wrap the loader with some cache
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$configuration->setAlias('symfony.templating.loader.wrapped', $configuration->getAlias('symfony.templating.loader'));
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$configuration->setAlias('symfony.templating.loader', 'symfony.templating.loader.cache');
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$configuration->setParameter('symfony.templating.loader.cache.path', $config['cache']);
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}
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return $configuration;
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}
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/**
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* Returns the namespace to be used for this extension (XML namespace).
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*
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* @return string The XML namespace
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*/
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public function getNamespace()
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{
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return 'http://www.symfony-project.org/schema/symfony';
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}
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/**
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* Returns the recommanded alias to use in XML.
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*
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* This alias is also the mandatory prefix to use when using YAML.
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*
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* @return string The alias
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*/
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public function getAlias()
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{
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return 'symfony';
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}
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}

‎src/Symfony/Components/DependencyInjection/Loader/Extension/xml/symfony/templating-1.0.xml

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<?xml version="1.0" ?>
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<container xmlns="http://www.symfony-project.org/schema/services"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://www.symfony-project.org/schema/services http://www.symfony-project.org/schema/services/services-1.0.xsd">
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<parameters>
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<parameter key="symfony.templating.engine.class">Symfony\Components\Templating\Engine</parameter>
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<parameter key="symfony.templating.helperset.class">Symfony\Components\Templating\Helper\HelperSet</parameter>
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<parameter key="symfony.templating.loader.filesystem.class">Symfony\Components\Templating\Loader\FilesystemLoader</parameter>
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<parameter key="symfony.templating.loader.cache.class">Symfony\Components\Templating\Loader\CacheLoader</parameter>
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<parameter key="symfony.templating.loader.Chain.class">Symfony\Components\Templating\Loader\ChainLoader</parameter>
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<parameter key="symfony.templating.helper.javascripts.class">Symfony\Components\Templating\Helper\JavascriptsHelper</parameter>
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<parameter key="symfony.templating.helper.stylesheets.class">Symfony\Components\Templating\Helper\StylesheetsHelper</parameter>
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</parameters>
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<services>
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<service id="symfony.templating.engine" class="%symfony.templating.engine.class%">
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<argument type="service" id="symfony.templating.loader" />
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<argument type="collection"></argument>
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<argument type="service" id="symfony.templating.helperset" />
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</service>
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<service id="symfony.templating.helperset" class="%symfony.templating.helperset.class%">
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<argument>%symfony.templating.helpers%</argument>
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</service>
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<service id="symfony.templating.loader.filesystem" class="%symfony.templating.loader.filesystem.class%">
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<argument>%symfony.templating.loader.filesystem.path%</argument>
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</service>
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<service id="symfony.templating.loader.cache" class="%symfony.templating.loader.cache.class%">
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<argument type="service" id="symfony.templating.loader.wrapped" />
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<argument>%symfony.templating.loader.cache.path%</argument>
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</service>
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<service id="symfony.templating.loader.chain" class="%symfony.templating.loader.chain.class%">
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<argument>%symfony.templating.loader.chain.loaders%</argument>
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</service>
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<service id="symfony.templating.helper.javascripts" class="%symfony.templating.helper.javascripts.class%" />
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<service id="symfony.templating.helper.stylesheets" class="%symfony.templating.helper.stylesheets.class%" />
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<service id="symfony.templating.loader" alias="symfony.templating.loader.filesystem" />
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</services>
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</container>

‎src/Symfony/Components/DependencyInjection/Loader/schema/symfony/symfony-1.0.xsd

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<?xml version="1.0" encoding="UTF-8" ?>
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<xsd:schema xmlns="http://www.symfony-project.org/schema/symfony"
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xmlns:xsd="http://www.w3.org/2001/XMLSchema"
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targetNamespace="http://www.symfony-project.org/schema/symfony"
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elementFormDefault="qualified">
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<xsd:element name="templating" type="templating" />
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<xsd:complexType name="templating">
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<xsd:sequence>
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<xsd:element name="loader" type="xsd:string" minOccurs="0" maxOccurs="unbounded" />
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<xsd:element name="helper" type="xsd:string" minOccurs="0" maxOccurs="unbounded" />
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</xsd:sequence>
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<xsd:attribute name="path" type="xsd:string" />
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<xsd:attribute name="cache" type="xsd:string" />
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</xsd:complexType>
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</xsd:schema>

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