<?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\Yaml\Yaml;

/**

 * YamlFileLoader loads translations from Yaml files.

 *

 * @author Fabien Potencier <fabien@symfony.com>

 *

 * @api

 */

class YamlFileLoader extends ArrayLoader implements LoaderInterface

{

    /**

     * {@inheritdoc}

     *

     * @api

     */

    public function load($resource, $locale, $domain = 'messages')

    {

        $messages = Yaml::parse($resource);

        // empty file

        if (null === $messages) {

            $messages = array();

        }

        // not an array

        if (!is_array($messages)) {

            throw new \InvalidArgumentException(sprintf('The file "%s" must contain a YAML array.', $resource));

        }

        $catalogue = parent::load($messages, $locale, $domain);

        $catalogue->addResource(new FileResource($resource));

        return $catalogue;

    }

}