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libraries/vendor/joomla/console/src/Loader/ContainerLoader.php

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+<?php
+
+/**
+ * Part of the Joomla Framework Console Package
+ *
+ * @copyright  Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
+ * @license    GNU General Public License version 2 or later; see LICENSE
+ */
+
+namespace Joomla\Console\Loader;
+
+use Joomla\Console\Command\AbstractCommand;
+use Psr\Container\ContainerInterface;
+use Symfony\Component\Console\Exception\CommandNotFoundException;
+
+/**
+ * PSR-11 compatible command loader.
+ *
+ * @since  2.0.0
+ */
+final class ContainerLoader implements LoaderInterface
+{
+    /**
+     * The service container.
+     *
+     * @var    ContainerInterface
+     * @since  2.0.0
+     */
+    private $container;
+
+    /**
+     * The command name to service ID map.
+     *
+     * @var    string[]
+     * @since  2.0.0
+     */
+    private $commandMap;
+
+    /**
+     * Constructor.
+     *
+     * @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.
+     *
+     * @since   2.0.0
+     */
+    public function __construct(ContainerInterface $container, array $commandMap)
+    {
+        $this->container  = $container;
+        $this->commandMap = $commandMap;
+    }
+
+    /**
+     * Loads a command.
+     *
+     * @param   string  $name  The command to load.
+     *
+     * @return  AbstractCommand
+     *
+     * @since   2.0.0
+     * @throws  CommandNotFoundException
+     */
+    public function get(string $name): AbstractCommand
+    {
+        if (!$this->has($name)) {
+            throw new CommandNotFoundException(sprintf('Command "%s" does not exist.', $name));
+        }
+
+        return $this->container->get($this->commandMap[$name]);
+    }
+
+    /**
+     * Get the names of the registered commands.
+     *
+     * @return  string[]
+     *
+     * @since   2.0.0
+     */
+    public function getNames(): array
+    {
+        return array_keys($this->commandMap);
+    }
+
+    /**
+     * Checks if a command exists.
+     *
+     * @param   string  $name  The command to check.
+     *
+     * @return  boolean
+     *
+     * @since   2.0.0
+     */
+    public function has($name): bool
+    {
+        return isset($this->commandMap[$name]) && $this->container->has($this->commandMap[$name]);
+    }
+}