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vendor/symfony/twig-bundle/DependencyInjection/TwigExtension.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\TwigBundle\DependencyInjection;
+
+use Symfony\Component\Config\FileLocator;
+use Symfony\Component\Config\Resource\FileExistenceResource;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
+use Symfony\Component\HttpKernel\DependencyInjection\Extension;
+
+/**
+ * TwigExtension.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Jeremy Mikola <jmikola@gmail.com>
+ */
+class TwigExtension extends Extension
+{
+    /**
+     * Responds to the twig configuration parameter.
+     *
+     * @param array            $configs
+     * @param ContainerBuilder $container
+     */
+    public function load(array $configs, ContainerBuilder $container)
+    {
+        $loader = new XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
+        $loader->load('twig.xml');
+
+        if (class_exists('Symfony\Component\Form\Form')) {
+            $loader->load('form.xml');
+        }
+
+        if (interface_exists('Symfony\Component\Templating\EngineInterface')) {
+            $loader->load('templating.xml');
+        }
+
+        if (!interface_exists('Symfony\Component\Translation\TranslatorInterface')) {
+            $container->removeDefinition('twig.translation.extractor');
+        }
+
+        foreach ($configs as $key => $config) {
+            if (isset($config['globals'])) {
+                foreach ($config['globals'] as $name => $value) {
+                    if (is_array($value) && isset($value['key'])) {
+                        $configs[$key]['globals'][$name] = array(
+                            'key' => $name,
+                            'value' => $value,
+                        );
+                    }
+                }
+            }
+        }
+
+        $configuration = $this->getConfiguration($configs, $container);
+
+        $config = $this->processConfiguration($configuration, $configs);
+
+        $container->setParameter('twig.exception_listener.controller', $config['exception_controller']);
+
+        $container->setParameter('twig.form.resources', $config['form_themes']);
+
+        $envConfiguratorDefinition = $container->getDefinition('twig.configurator.environment');
+        $envConfiguratorDefinition->replaceArgument(0, $config['date']['format']);
+        $envConfiguratorDefinition->replaceArgument(1, $config['date']['interval_format']);
+        $envConfiguratorDefinition->replaceArgument(2, $config['date']['timezone']);
+        $envConfiguratorDefinition->replaceArgument(3, $config['number_format']['decimals']);
+        $envConfiguratorDefinition->replaceArgument(4, $config['number_format']['decimal_point']);
+        $envConfiguratorDefinition->replaceArgument(5, $config['number_format']['thousands_separator']);
+
+        $twigFilesystemLoaderDefinition = $container->getDefinition('twig.loader.native_filesystem');
+
+        // register user-configured paths
+        foreach ($config['paths'] as $path => $namespace) {
+            if (!$namespace) {
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path));
+            } else {
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path, $namespace));
+            }
+        }
+
+        $container->getDefinition('twig.cache_warmer')->replaceArgument(2, $config['paths']);
+        $container->getDefinition('twig.template_iterator')->replaceArgument(2, $config['paths']);
+
+        $bundleHierarchy = $this->getBundleHierarchy($container);
+
+        foreach ($bundleHierarchy as $name => $bundle) {
+            $namespace = $this->normalizeBundleName($name);
+
+            foreach ($bundle['children'] as $child) {
+                foreach ($bundleHierarchy[$child]['paths'] as $path) {
+                    $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path, $namespace));
+                }
+            }
+
+            foreach ($bundle['paths'] as $path) {
+                $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($path, $namespace));
+            }
+        }
+
+        if (is_dir($dir = $container->getParameter('kernel.root_dir').'/Resources/views')) {
+            $twigFilesystemLoaderDefinition->addMethodCall('addPath', array($dir));
+        }
+        $container->addResource(new FileExistenceResource($dir));
+
+        if (!empty($config['globals'])) {
+            $def = $container->getDefinition('twig');
+            foreach ($config['globals'] as $key => $global) {
+                if (isset($global['type']) && 'service' === $global['type']) {
+                    $def->addMethodCall('addGlobal', array($key, new Reference($global['id'])));
+                } else {
+                    $def->addMethodCall('addGlobal', array($key, $global['value']));
+                }
+            }
+        }
+
+        unset(
+            $config['form'],
+            $config['globals'],
+            $config['extensions']
+        );
+
+        if (isset($config['autoescape_service']) && isset($config['autoescape_service_method'])) {
+            $config['autoescape'] = array(new Reference($config['autoescape_service']), $config['autoescape_service_method']);
+        }
+        unset($config['autoescape_service'], $config['autoescape_service_method']);
+
+        $container->getDefinition('twig')->replaceArgument(1, $config);
+
+        $this->addClassesToCompile(array(
+            'Twig_Environment',
+            'Twig_Extension',
+            'Twig_Extension_Core',
+            'Twig_Extension_Escaper',
+            'Twig_Extension_Optimizer',
+            'Twig_LoaderInterface',
+            'Twig_Markup',
+            'Twig_Template',
+        ));
+    }
+
+    private function getBundleHierarchy(ContainerBuilder $container)
+    {
+        $bundleHierarchy = array();
+
+        foreach ($container->getParameter('kernel.bundles_metadata') as $name => $bundle) {
+            if (!array_key_exists($name, $bundleHierarchy)) {
+                $bundleHierarchy[$name] = array(
+                    'paths' => array(),
+                    'parents' => array(),
+                    'children' => array(),
+                );
+            }
+
+            if (is_dir($dir = $container->getParameter('kernel.root_dir').'/Resources/'.$name.'/views')) {
+                $bundleHierarchy[$name]['paths'][] = $dir;
+            }
+            $container->addResource(new FileExistenceResource($dir));
+
+            if (is_dir($dir = $bundle['path'].'/Resources/views')) {
+                $bundleHierarchy[$name]['paths'][] = $dir;
+            }
+            $container->addResource(new FileExistenceResource($dir));
+
+            if (null === $bundle['parent']) {
+                continue;
+            }
+
+            $bundleHierarchy[$name]['parents'][] = $bundle['parent'];
+
+            if (!array_key_exists($bundle['parent'], $bundleHierarchy)) {
+                $bundleHierarchy[$bundle['parent']] = array(
+                    'paths' => array(),
+                    'parents' => array(),
+                    'children' => array(),
+                );
+            }
+
+            $bundleHierarchy[$bundle['parent']]['children'] = array_merge($bundleHierarchy[$name]['children'], array($name), $bundleHierarchy[$bundle['parent']]['children']);
+
+            foreach ($bundleHierarchy[$bundle['parent']]['parents'] as $parent) {
+                $bundleHierarchy[$name]['parents'][] = $parent;
+                $bundleHierarchy[$parent]['children'] = array_merge($bundleHierarchy[$name]['children'], array($name), $bundleHierarchy[$parent]['children']);
+            }
+
+            foreach ($bundleHierarchy[$name]['children'] as $child) {
+                $bundleHierarchy[$child]['parents'] = array_merge($bundleHierarchy[$child]['parents'], $bundleHierarchy[$name]['parents']);
+            }
+        }
+
+        return $bundleHierarchy;
+    }
+
+    private function normalizeBundleName($name)
+    {
+        if ('Bundle' === substr($name, -6)) {
+            $name = substr($name, 0, -6);
+        }
+
+        return $name;
+    }
+
+    /**
+     * Returns the base path for the XSD files.
+     *
+     * @return string The XSD base path
+     */
+    public function getXsdValidationBasePath()
+    {
+        return __DIR__.'/../Resources/config/schema';
+    }
+
+    public function getNamespace()
+    {
+        return 'http://symfony.com/schema/dic/twig';
+    }
+}