<?php
  
  /*
   * This file is part of the Symfony package.
   *
   * (c) Fabien Potencier <fabien@symfony.com>
   *
   * For the full copyright and license information, please view the LICENSE
   * file that was distributed with this source code.
   */
  
  namespace Symfony\Component\Translation\Loader;
  
  use Symfony\Component\Config\Resource\FileResource;
  use Symfony\Component\Translation\Exception\InvalidResourceException;
  use Symfony\Component\Translation\Exception\NotFoundResourceException;
  
  /**
   * @author Abdellatif Ait boudad <a.aitboudad@gmail.com>
   */
  abstract class FileLoader extends ArrayLoader
  {
      /**
       * {@inheritdoc}
       */
      public function load($resource, string $locale, string $domain = 'messages')
      {
          if (!stream_is_local($resource)) {
              throw new InvalidResourceException(sprintf('This is not a local file "%s".', $resource));
          }
  
          if (!file_exists($resource)) {
              throw new NotFoundResourceException(sprintf('File "%s" not found.', $resource));
          }
  
          $messages = $this->loadResource($resource);
  
          // empty resource
          if (null === $messages) {
              $messages = [];
          }
  
          // not an array
          if (!\is_array($messages)) {
              throw new InvalidResourceException(sprintf('Unable to load file "%s".', $resource));
          }
  
          $catalogue = parent::load($messages, $locale, $domain);
  
          if (class_exists(FileResource::class)) {
              $catalogue->addResource(new FileResource($resource));
          }
  
          return $catalogue;
      }
  
      /**
       * @return array
       *
       * @throws InvalidResourceException if stream content has an invalid format
       */
      abstract protected function loadResource(string $resource);
  }