Chris@14: <?php
Chris@14: 
Chris@14: /*
Chris@14:  * This file is part of the Symfony package.
Chris@14:  *
Chris@14:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@14:  *
Chris@14:  * For the full copyright and license information, please view the LICENSE
Chris@14:  * file that was distributed with this source code.
Chris@14:  */
Chris@14: 
Chris@14: namespace Symfony\Component\Console\CommandLoader;
Chris@14: 
Chris@14: use Symfony\Component\Console\Exception\CommandNotFoundException;
Chris@14: 
Chris@14: /**
Chris@14:  * A simple command loader using factories to instantiate commands lazily.
Chris@14:  *
Chris@14:  * @author Maxime Steinhausser <maxime.steinhausser@gmail.com>
Chris@14:  */
Chris@14: class FactoryCommandLoader implements CommandLoaderInterface
Chris@14: {
Chris@14:     private $factories;
Chris@14: 
Chris@14:     /**
Chris@14:      * @param callable[] $factories Indexed by command names
Chris@14:      */
Chris@14:     public function __construct(array $factories)
Chris@14:     {
Chris@14:         $this->factories = $factories;
Chris@14:     }
Chris@14: 
Chris@14:     /**
Chris@14:      * {@inheritdoc}
Chris@14:      */
Chris@14:     public function has($name)
Chris@14:     {
Chris@14:         return isset($this->factories[$name]);
Chris@14:     }
Chris@14: 
Chris@14:     /**
Chris@14:      * {@inheritdoc}
Chris@14:      */
Chris@14:     public function get($name)
Chris@14:     {
Chris@14:         if (!isset($this->factories[$name])) {
Chris@14:             throw new CommandNotFoundException(sprintf('Command "%s" does not exist.', $name));
Chris@14:         }
Chris@14: 
Chris@14:         $factory = $this->factories[$name];
Chris@14: 
Chris@14:         return $factory();
Chris@14:     }
Chris@14: 
Chris@14:     /**
Chris@14:      * {@inheritdoc}
Chris@14:      */
Chris@14:     public function getNames()
Chris@14:     {
Chris@14:         return array_keys($this->factories);
Chris@14:     }
Chris@14: }