<?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;

/**
 * CsvFileLoader loads translations from CSV files.
 *
 * @author Saša Stamenković <umpirsky@gmail.com>
 *
 * @api
 */
class CsvFileLoader extends ArrayLoader implements LoaderInterface
{
    /**
     * {@inheritdoc}
     *
     * @api
     */
    public function load($resource, $locale, $domain = 'messages')
    {
        $messages = array();

        try {
            $file = new \SplFileObject($resource, 'rb');
        } catch(\RuntimeException $e) {
            throw new \InvalidArgumentException(sprintf('Error opening file "%s".', $resource));
        }

        $file->setFlags(\SplFileObject::READ_CSV | \SplFileObject::SKIP_EMPTY);
        $file->setCsvControl(';');

        foreach($file as $data) {
            if (substr($data[0], 0, 1) === '#') {
                continue;
            }

            if (!isset($data[1])) {
                continue;
            }

            if (count($data) == 2) {
                $messages[$data[0]] = $data[1];
            } else {
                 continue;
            }
        }

        $catalogue = parent::load($messages, $locale, $domain);
        $catalogue->addResource(new FileResource($resource));

        return $catalogue;
    }
}