266 lines
7.9 KiB
PHP
266 lines
7.9 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.potencier@symfony-project.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\Loader;
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use Symfony\Component\DependencyInjection\Alias;
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use Symfony\Component\DependencyInjection\ContainerInterface;
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use Symfony\Component\DependencyInjection\InterfaceInjector;
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use Symfony\Component\DependencyInjection\Definition;
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use Symfony\Component\DependencyInjection\Reference;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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use Symfony\Component\DependencyInjection\Resource\FileResource;
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use Symfony\Component\Yaml\Yaml;
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/**
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* YamlFileLoader loads YAML files service definitions.
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*
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* The YAML format does not support anonymous services (cf. the XML loader).
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*
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* @author Fabien Potencier <fabien.potencier@symfony-project.com>
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*/
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class YamlFileLoader extends FileLoader
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{
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/**
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* Loads a Yaml file.
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*
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* @param mixed $resource The resource
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*/
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public function load($file)
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{
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$path = $this->findFile($file);
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$content = $this->loadFile($path);
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$this->container->addResource(new FileResource($path));
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// empty file
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if (null === $content) {
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return;
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}
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// imports
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$this->parseImports($content, $file);
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// parameters
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if (isset($content['parameters'])) {
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foreach ($content['parameters'] as $key => $value) {
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$this->container->setParameter($key, $this->resolveServices($value));
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}
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}
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// extensions
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$this->loadFromExtensions($content);
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// interface injectors
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$this->parseInterfaceInjectors($content, $file);
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// services
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$this->parseDefinitions($content, $file);
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}
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/**
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* Returns true if this class supports the given resource.
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*
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* @param mixed $resource A resource
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*
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* @return Boolean true if this class supports the given resource, false otherwise
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*/
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public function supports($resource)
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{
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return is_string($resource) && 'yml' === pathinfo($resource, PATHINFO_EXTENSION);
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}
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protected function parseImports($content, $file)
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{
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if (!isset($content['imports'])) {
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return;
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}
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foreach ($content['imports'] as $import) {
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$this->currentDir = dirname($file);
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$this->import($import['resource'], isset($import['ignore_errors']) ? (Boolean) $import['ignore_errors'] : false);
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}
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}
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protected function parseInterfaceInjectors($content, $file)
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{
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if (!isset($content['interfaces'])) {
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return;
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}
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foreach ($content['interfaces'] as $class => $interface) {
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$this->parseInterfaceInjector($class, $interface, $file);
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}
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}
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protected function parseInterfaceInjector($class, $interface, $file)
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{
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$injector = new InterfaceInjector($class);
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if (isset($interface['calls'])) {
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foreach ($interface['calls'] as $call) {
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$injector->addMethodCall($call[0], $this->resolveServices($call[1]));
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}
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}
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$this->container->addInterfaceInjector($injector);
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}
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protected function parseDefinitions($content, $file)
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{
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if (!isset($content['services'])) {
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return;
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}
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foreach ($content['services'] as $id => $service) {
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$this->parseDefinition($id, $service, $file);
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}
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}
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protected function parseDefinition($id, $service, $file)
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{
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if (is_string($service) && 0 === strpos($service, '@')) {
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$this->container->setAlias($id, substr($service, 1));
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return;
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} else if (isset($service['alias'])) {
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$public = !array_key_exists('public', $service) || (Boolean) $service['public'];
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$this->container->setAlias($id, new Alias($service['alias'], $public));
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return;
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}
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$definition = new Definition();
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if (isset($service['class'])) {
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$definition->setClass($service['class']);
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}
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if (isset($service['shared'])) {
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$definition->setShared($service['shared']);
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}
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if (isset($service['public'])) {
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$definition->setPublic($service['public']);
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}
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if (isset($service['factory_method'])) {
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$definition->setFactoryMethod($service['factory_method']);
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}
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if (isset($service['factory_service'])) {
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$definition->setFactoryService($service['factory_service']);
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}
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if (isset($service['file'])) {
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$definition->setFile($service['file']);
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}
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if (isset($service['arguments'])) {
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$definition->setArguments($this->resolveServices($service['arguments']));
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}
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if (isset($service['configurator'])) {
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if (is_string($service['configurator'])) {
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$definition->setConfigurator($service['configurator']);
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} else {
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$definition->setConfigurator(array($this->resolveServices($service['configurator'][0]), $service['configurator'][1]));
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}
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}
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if (isset($service['calls'])) {
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foreach ($service['calls'] as $call) {
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$definition->addMethodCall($call[0], $this->resolveServices($call[1]));
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}
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}
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if (isset($service['tags'])) {
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foreach ($service['tags'] as $tag) {
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$name = $tag['name'];
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unset($tag['name']);
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$definition->addTag($name, $tag);
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}
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}
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$this->container->setDefinition($id, $definition);
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}
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protected function loadFile($file)
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{
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return $this->validate(Yaml::load($file), $file);
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}
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/**
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* @throws \InvalidArgumentException When service file is not valid
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*/
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protected function validate($content, $file)
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{
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if (null === $content) {
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return $content;
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}
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if (!is_array($content)) {
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throw new \InvalidArgumentException(sprintf('The service file "%s" is not valid.', $file));
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}
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foreach (array_keys($content) as $key) {
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if (in_array($key, array('imports', 'parameters', 'services', 'interfaces'))) {
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continue;
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}
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// can it be handled by an extension?
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if (false !== strpos($key, '.')) {
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list($namespace, $tag) = explode('.', $key);
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if (!$this->container->hasExtension($namespace)) {
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throw new \InvalidArgumentException(sprintf('There is no extension able to load the configuration for "%s" (in %s).', $key, $file));
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}
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continue;
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}
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throw new \InvalidArgumentException(sprintf('The "%s" tag is not valid (in %s).', $key, $file));
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}
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return $content;
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}
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protected function resolveServices($value)
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{
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if (is_array($value)) {
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$value = array_map(array($this, 'resolveServices'), $value);
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} else if (is_string($value) && 0 === strpos($value, '@?')) {
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$value = new Reference(substr($value, 2), ContainerInterface::IGNORE_ON_INVALID_REFERENCE);
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} else if (is_string($value) && 0 === strpos($value, '@')) {
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$value = new Reference(substr($value, 1));
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}
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return $value;
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}
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protected function loadFromExtensions($content)
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{
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foreach ($content as $key => $values) {
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if (in_array($key, array('imports', 'parameters', 'services', 'interfaces'))) {
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continue;
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}
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list($namespace, $tag) = explode('.', $key);
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if (!is_array($values)) {
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$values = array();
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}
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$this->container->loadFromExtension($namespace, $tag, $values);
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}
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}
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}
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