<?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\Translation\Exception\InvalidResourceException;
 
 /**
  * JsonFileLoader loads translations from an json file.
  *
  * @author singles
  */
 class JsonFileLoader extends FileLoader
 {
     /**
      * {@inheritdoc}
      */
     protected function loadResource($resource)
     {
         $messages = [];
         if ($data = file_get_contents($resource)) {
             $messages = json_decode($data, true);
 
             if (0 < $errorCode = json_last_error()) {
                 throw new InvalidResourceException(sprintf('Error parsing JSON - %s', $this->getJSONErrorMessage($errorCode)));
             }
         }
 
         return $messages;
     }
 
     /**
      * Translates JSON_ERROR_* constant into meaningful message.
      *
      * @param int $errorCode Error code returned by json_last_error() call
      *
      * @return string Message string
      */
     private function getJSONErrorMessage($errorCode)
     {
         switch ($errorCode) {
             case JSON_ERROR_DEPTH:
                 return 'Maximum stack depth exceeded';
             case JSON_ERROR_STATE_MISMATCH:
                 return 'Underflow or the modes mismatch';
             case JSON_ERROR_CTRL_CHAR:
                 return 'Unexpected control character found';
             case JSON_ERROR_SYNTAX:
                 return 'Syntax error, malformed JSON';
             case JSON_ERROR_UTF8:
                 return 'Malformed UTF-8 characters, possibly incorrectly encoded';
             default:
                 return 'Unknown error';
         }
     }
 }