--- /dev/null
+<?php
+
+namespace Symfony\Component\Console\CommandLoader;
+
+use Psr\Container\ContainerInterface;
+use Symfony\Component\Console\Exception\CommandNotFoundException;
+
+/**
+ * Loads commands from a PSR-11 container.
+ *
+ * @author Robin Chalas <robin.chalas@gmail.com>
+ */
+class ContainerCommandLoader implements CommandLoaderInterface
+{
+ private $container;
+ private $commandMap;
+
+ /**
+ * @param ContainerInterface $container A container from which to load command services
+ * @param array $commandMap An array with command names as keys and service ids as values
+ */
+ public function __construct(ContainerInterface $container, array $commandMap)
+ {
+ $this->container = $container;
+ $this->commandMap = $commandMap;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function get($name)
+ {
+ if (!$this->has($name)) {
+ throw new CommandNotFoundException(sprintf('Command "%s" does not exist.', $name));
+ }
+
+ return $this->container->get($this->commandMap[$name]);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function has($name)
+ {
+ return isset($this->commandMap[$name]) && $this->container->has($this->commandMap[$name]);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getNames()
+ {
+ return array_keys($this->commandMap);
+ }
+}