KnpGaufretteBundle/DependencyInjection/KnpGaufretteExtension.php

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<?php
namespace Knp\Bundle\GaufretteBundle\DependencyInjection;
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use Symfony\Component\Config\Definition\Processor;
use Symfony\Component\Config\FileLocator;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\DefinitionDecorator;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
use Symfony\Component\HttpKernel\DependencyInjection\Extension;
/**
* The Gaufrette DIC extension
*
* @author Antoine Hérault <antoine.herault@gmail.com>
*/
class KnpGaufretteExtension extends Extension
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{
private $factories = null;
/**
* Loads the extension
*
* @param array $configs
* @param ContainerBuilder $container
*/
public function load(array $configs, ContainerBuilder $container)
{
$processor = new Processor();
// first assemble the adapter factories
$factoryConfig = new FactoryConfiguration();
$config = $processor->processConfiguration($factoryConfig, $configs);
$factories = $this->createAdapterFactories($config, $container);
// then normalize the configs
$mainConfig = new MainConfiguration($factories);
$config = $processor->processConfiguration($mainConfig, $configs);
$loader = new XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
$loader->load('gaufrette.xml');
foreach ($config['adapters'] as $name => $adapter) {
$adapters[$name] = $this->createAdapter($name, $adapter, $container, $factories);
}
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$map = array();
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foreach ($config['filesystems'] as $name => $filesystem) {
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$map[$name] = $this->createFilesystem($name, $filesystem, $container, $adapters);
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}
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$container->getDefinition('knp_gaufrette.filesystem_map')
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->replaceArgument(0, $map);
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}
private function createAdapter($name, array $config, ContainerBuilder $container, array $factories)
{
$adapter = null;
foreach ($config as $key => $adapter) {
if (array_key_exists($key, $factories)) {
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$id = sprintf('gaufrette.%s_adapter', $name);
$factories[$key]->create($container, $id, $adapter);
return $id;
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}
}
throw new \LogicException(sprintf('The adapter \'%s\' is not configured.', $name));
}
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/**
* @return Reference a reference to the created filesystem
*/
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private function createFilesystem($name, array $config, ContainerBuilder $container, array $adapters)
{
if (!array_key_exists($config['adapter'], $adapters)) {
throw new \LogicException(sprintf('The adapter \'%s\' is not defined.', $config['adapter']));
}
$adapter = $adapters[$config['adapter']];
$id = sprintf('gaufrette.%s_filesystem', $name);
$container
->setDefinition($id, new DefinitionDecorator('knp_gaufrette.filesystem'))
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->replaceArgument(0, new Reference($adapter))
;
if (!empty($config['alias'])) {
$container->setAlias($config['alias'], $id);
}
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return new Reference($id);
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}
/**
* Creates the adapter factories
*
* @param array $config
* @param ContainerBuilder $container
*/
private function createAdapterFactories($config, ContainerBuilder $container)
{
if (null !== $this->factories) {
return $this->factories;
}
// load bundled adapter factories
$tempContainer = new ContainerBuilder();
$parameterBag = $container->getParameterBag();
$loader = new XmlFileLoader($tempContainer, new FileLocator(__DIR__.'/../Resources/config'));
$loader->load('adapter_factories.xml');
// load user-created adapter factories
foreach ($config['factories'] as $factory) {
$loader->load($parameterBag->resolveValue($factory));
}
$services = $tempContainer->findTaggedServiceIds('gaufrette.adapter.factory');
$factories = array();
foreach (array_keys($services) as $id) {
$factory = $tempContainer->get($id);
$factories[str_replace('-', '_', $factory->getKey())] = $factory;
}
return $this->factories = $factories;
}
}