119 lines
3.5 KiB
PHP
119 lines
3.5 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DependencyInjection\Extension;
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use Symfony\Component\DependencyInjection\Container;
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use Symfony\Component\DependencyInjection\Exception\BadMethodCallException;
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use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
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use Symfony\Component\Config\Resource\FileResource;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\Config\Definition\Processor;
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use Symfony\Component\Config\Definition\ConfigurationInterface;
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/**
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* Provides useful features shared by many extensions.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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abstract class Extension implements ExtensionInterface, ConfigurationExtensionInterface
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{
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/**
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* {@inheritdoc}
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*/
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public function getXsdValidationBasePath()
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{
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return false;
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}
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/**
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* {@inheritdoc}
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*/
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public function getNamespace()
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{
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return 'http://example.org/schema/dic/'.$this->getAlias();
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}
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/**
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* Returns the recommended alias to use in XML.
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*
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* This alias is also the mandatory prefix to use when using YAML.
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*
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* This convention is to remove the "Extension" postfix from the class
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* name and then lowercase and underscore the result. So:
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*
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* AcmeHelloExtension
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*
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* becomes
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*
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* acme_hello
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*
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* This can be overridden in a sub-class to specify the alias manually.
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*
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* @return string The alias
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*
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* @throws BadMethodCallException When the extension name does not follow conventions
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*/
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public function getAlias()
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{
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$className = get_class($this);
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if (substr($className, -9) != 'Extension') {
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throw new BadMethodCallException('This extension does not follow the naming convention; you must overwrite the getAlias() method.');
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}
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$classBaseName = substr(strrchr($className, '\\'), 1, -9);
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return Container::underscore($classBaseName);
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}
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/**
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* {@inheritdoc}
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*/
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public function getConfiguration(array $config, ContainerBuilder $container)
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{
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$reflected = new \ReflectionClass($this);
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$namespace = $reflected->getNamespaceName();
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$class = $namespace.'\\Configuration';
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if (class_exists($class)) {
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$r = new \ReflectionClass($class);
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$container->addResource(new FileResource($r->getFileName()));
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if (!method_exists($class, '__construct')) {
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return new $class();
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}
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}
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}
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final protected function processConfiguration(ConfigurationInterface $configuration, array $configs)
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{
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$processor = new Processor();
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return $processor->processConfiguration($configuration, $configs);
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}
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/**
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* @param ContainerBuilder $container
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* @param array $config
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*
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* @return bool Whether the configuration is enabled
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*
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* @throws InvalidArgumentException When the config is not enableable
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*/
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protected function isConfigEnabled(ContainerBuilder $container, array $config)
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{
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if (!array_key_exists('enabled', $config)) {
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throw new InvalidArgumentException("The config array has no 'enabled' key.");
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}
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return (bool) $container->getParameterBag()->resolveValue($config['enabled']);
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}
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}
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