vendor/symfony/translation/Symfony/Component/Translation/Loader/YamlFileLoader.php

   1 <?php
   2
   3 /*
   4  * This file is part of the Symfony package.
   5  *
   6  * (c) Fabien Potencier <fabien@symfony.com>
   7  *
   8  * For the full copyright and license information, please view the LICENSE
   9  * file that was distributed with this source code.
  10  */
  11
  12 namespace Symfony\Component\Translation\Loader;
  13
  14 use Symfony\Component\Translation\Exception\InvalidResourceException;
  15 use Symfony\Component\Translation\Exception\NotFoundResourceException;
  16 use Symfony\Component\Config\Resource\FileResource;
  17 use Symfony\Component\Yaml\Parser as YamlParser;
  18 use Symfony\Component\Yaml\Exception\ParseException;
  19
  20 /**
  21  * YamlFileLoader loads translations from Yaml files.
  22  *
  23  * @author Fabien Potencier <fabien@symfony.com>
  24  *
  25  * @api
  26  */
  27 class YamlFileLoader extends ArrayLoader implements LoaderInterface
  28 {
  29     private $yamlParser;
  30
  31     /**
  32      * {@inheritdoc}
  33      *
  34      * @api
  35      */
  36     public function load($resource, $locale, $domain = 'messages')
  37     {
  38         if (!stream_is_local($resource)) {
  39             throw new InvalidResourceException(sprintf('This is not a local file "%s".', $resource));
  40         }
  41
  42         if (!file_exists($resource)) {
  43             throw new NotFoundResourceException(sprintf('File "%s" not found.', $resource));
  44         }
  45
  46         if (null === $this->yamlParser) {
  47             $this->yamlParser = new YamlParser();
  48         }
  49
  50         try {
  51             $messages = $this->yamlParser->parse(file_get_contents($resource));
  52         } catch (ParseException $e) {
  53             throw new InvalidResourceException('Error parsing YAML.', 0, $e);
  54         }
  55
  56         // empty file
  57         if (null === $messages) {
  58             $messages = array();
  59         }
  60
  61         // not an array
  62         if (!is_array($messages)) {
  63             throw new InvalidResourceException(sprintf('The file "%s" must contain a YAML array.', $resource));
  64         }
  65
  66         $catalogue = parent::load($messages, $locale, $domain);
  67         $catalogue->addResource(new FileResource($resource));
  68
  69         return $catalogue;
  70     }
  71 }