class ZfExtensionManagerSfContainer

class ZfExtensionManagerSfContainer implements ReaderManagerInterface, WriterManagerInterface, ContainerAwareInterface {
    
    /**
     * A map of characters to be replaced through strtr.
     *
     * This property is based on Laminas service manager.
     *
     * @link https://github.com/laminas/laminas-servicemanager for the canonical source repository
     * @copyright Copyright (c) 2019, Laminas Foundation. (https://getlaminas.org/)
     * @license https://github.com/laminas/laminas-servicemanager/blob/master/LICENSE.md
     *
     * @var array
     *
     * @see \Drupal\Component\Bridge\ZfExtensionManagerSfContainer::canonicalizeName().
     * @see https://github.com/laminas/laminas-servicemanager/blob/2.7.11/src/ServiceManager.php#L114
     */
    protected $canonicalNamesReplacements = [
        '-' => '',
        '_' => '',
        ' ' => '',
        '\\' => '',
        '/' => '',
    ];
    
    /**
     * The prefix to be used when retrieving plugins from the container.
     *
     * @var string
     */
    protected $prefix = '';
    
    /**
     * The service container.
     *
     * @var \Symfony\Component\DependencyInjection\ContainerInterface
     */
    protected $container;
    
    /**
     * A local cache of computed canonical names.
     *
     * @var string[]
     */
    protected $canonicalNames;
    
    /**
     * @var \Laminas\Feed\Reader\ExtensionManagerInterface|\Laminas\Feed\Writer\ExtensionManagerInterface
     */
    protected $standalone;
    
    /**
     * Constructs a ZfExtensionManagerSfContainer object.
     *
     * @param string $prefix
     *   The prefix to be used when retrieving plugins from the container.
     */
    public function __construct($prefix = '') {
        $this->prefix = $prefix;
    }
    
    /**
     * {@inheritdoc}
     */
    public function get($extension) {
        if ($this->standalone && $this->standalone
            ->has($extension)) {
            return $this->standalone
                ->get($extension);
        }
        return $this->container
            ->get($this->prefix . $this->canonicalizeName($extension));
    }
    
    /**
     * {@inheritdoc}
     */
    public function has($extension) {
        if ($this->standalone && $this->standalone
            ->has($extension)) {
            return TRUE;
        }
        return $this->container
            ->has($this->prefix . $this->canonicalizeName($extension));
    }
    
    /**
     * Canonicalize the extension name to a service name.
     *
     * This method is based on Laminas service manager.
     *
     * @link https://github.com/laminas/laminas-servicemanager for the canonical source repository
     * @copyright Copyright (c) 2019, Laminas Foundation. (https://getlaminas.org/)
     * @license https://github.com/laminas/laminas-servicemanager/blob/master/LICENSE.md
     *
     * @param string $name
     *   The extension name.
     *
     * @return string
     *   The service name, without the prefix.
     *
     * @see https://github.com/laminas/laminas-servicemanager/blob/2.7.11/src/ServiceManager.php#L900
     */
    protected function canonicalizeName($name) {
        if (isset($this->canonicalNames[$name])) {
            return $this->canonicalNames[$name];
        }
        // This is just for performance instead of using str_replace().
        return $this->canonicalNames[$name] = strtolower(strtr($name, $this->canonicalNamesReplacements));
    }
    
    /**
     * {@inheritdoc}
     */
    public function setContainer(ContainerInterface $container = NULL) {
        $this->container = $container;
    }
    
    /**
     * @param $class
     *   The class to set as standalone.
     */
    public function setStandalone($class) {
        if (!is_subclass_of($class, ReaderManagerInterface::class) && !is_subclass_of($class, WriterManagerInterface::class)) {
            throw new \RuntimeException("{$class} must implement Laminas\\Feed\\Reader\\ExtensionManagerInterface or Laminas\\Feed\\Writer\\ExtensionManagerInterface");
        }
        $this->standalone = new $class();
    }

}