vendor/symfony/translation/Symfony/Component/Translation/Loader/IcuResFileLoader.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\MessageCatalogue;
  15 use Symfony\Component\Translation\Exception\InvalidResourceException;
  16 use Symfony\Component\Translation\Exception\NotFoundResourceException;
  17 use Symfony\Component\Config\Resource\DirectoryResource;
  18
  19 /**
  20  * IcuResFileLoader loads translations from a resource bundle.
  21  *
  22  * @author stealth35
  23  */
  24 class IcuResFileLoader implements LoaderInterface
  25 {
  26     /**
  27      * {@inheritdoc}
  28      */
  29     public function load($resource, $locale, $domain = 'messages')
  30     {
  31         if (!stream_is_local($resource)) {
  32             throw new InvalidResourceException(sprintf('This is not a local file "%s".', $resource));
  33         }
  34
  35         if (!is_dir($resource)) {
  36             throw new NotFoundResourceException(sprintf('File "%s" not found.', $resource));
  37         }
  38
  39         $rb = new \ResourceBundle($locale, $resource);
  40
  41         if (!$rb) {
  42             throw new InvalidResourceException(sprintf('Cannot load resource "%s"', $resource));
  43         } elseif (intl_is_failure($rb->getErrorCode())) {
  44             throw new InvalidResourceException($rb->getErrorMessage(), $rb->getErrorCode());
  45         }
  46
  47         $messages = $this->flatten($rb);
  48         $catalogue = new MessageCatalogue($locale);
  49         $catalogue->add($messages, $domain);
  50         $catalogue->addResource(new DirectoryResource($resource));
  51
  52         return $catalogue;
  53     }
  54
  55     /**
  56      * Flattens an ResourceBundle
  57      *
  58      * The scheme used is:
  59      *   key { key2 { key3 { "value" } } }
  60      * Becomes:
  61      *   'key.key2.key3' => 'value'
  62      *
  63      * This function takes an array by reference and will modify it
  64      *
  65      * @param \ResourceBundle $rb       the ResourceBundle that will be flattened
  66      * @param array           $messages used internally for recursive calls
  67      * @param string          $path     current path being parsed, used internally for recursive calls
  68      *
  69      * @return array the flattened ResourceBundle
  70      */
  71     protected function flatten(\ResourceBundle $rb, array &$messages = array(), $path = null)
  72     {
  73         foreach ($rb as $key => $value) {
  74             $nodePath = $path ? $path.'.'.$key : $key;
  75             if ($value instanceof \ResourceBundle) {
  76                 $this->flatten($value, $messages, $nodePath);
  77             } else {
  78                 $messages[$nodePath] = $value;
  79             }
  80         }
  81
  82         return $messages;
  83     }
  84 }