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symfony/src/Symfony/Component/Translation/Loader/JsonFileLoader.php

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<?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;
use Symfony\Component\Translation\Exception\NotFoundResourceException;
use Symfony\Component\Config\Resource\FileResource;
/**
* JsonFileLoader loads translations from an json file.
*
* @author singles
*/
class JsonFileLoader extends ArrayLoader implements LoaderInterface
{
/**
* {@inheritdoc}
*/
public function load($resource, $locale, $domain = 'messages')
{
if (!stream_is_local($resource)) {
throw new InvalidResourceException(sprintf('This is not a local file "%s".', $resource));
}
if (!file_exists($resource)) {
throw new NotFoundResourceException(sprintf('File "%s" not found.', $resource));
}
$messages = json_decode(file_get_contents($resource), true);
if (($errorCode = json_last_error()) > 0) {
$message = $this->getJSONErrorMessage($errorCode);
throw new InvalidResourceException(sprintf('Error parsing JSON - %s', $message));
}
if ($messages === null) {
$messages = array();
}
$catalogue = parent::load($messages, $locale, $domain);
$catalogue->addResource(new FileResource($resource));
return $catalogue;
}
/**
* Translates JSON_ERROR_* constant into meaningful message
*
* @param integer $errorCode Error code returned by json_last_error() call
* @return string Message string
*/
private function getJSONErrorMessage($errorCode)
{
$errorMsg = null;
switch ($errorCode) {
case JSON_ERROR_DEPTH:
$errorMsg = 'Maximum stack depth exceeded';
break;
case JSON_ERROR_STATE_MISMATCH:
$errorMsg = 'Underflow or the modes mismatch';
break;
case JSON_ERROR_CTRL_CHAR:
$errorMsg = 'Unexpected control character found';
break;
case JSON_ERROR_SYNTAX:
$errorMsg = 'Syntax error, malformed JSON';
break;
case JSON_ERROR_UTF8:
$errorMsg = 'Malformed UTF-8 characters, possibly incorrectly encoded';
break;
default:
$errorMsg = 'Unknown error';
break;
}
return $errorMsg;
}
}