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<?php
namespace Bitrix\Main\Web;
use Bitrix\Main\Application;
use Bitrix\Main\Text\Encoding;
use Bitrix\Main\ArgumentException;
use Bitrix\Main\Context;
class Json
{
const JSON_ERROR_UNKNOWN = -1;
/**
* Returns a string containing the JSON representation of $data.
*
* @param mixed $data The value being encoded.
* @param null $options Bitmasked options. Default is JSON_HEX_TAG|JSON_HEX_AMP|JSON_HEX_APOS|JSON_HEX_QUOT.
*
* @return mixed
* @throws ArgumentException
* @see json_encode
*/
public static function encode($data, $options = null)
{
if (!Application::getInstance()->isUtfMode())
{
self::serializeJson($data);
$data = self::convertData($data);
}
if (is_null($options))
{
$options = JSON_HEX_TAG|JSON_HEX_AMP|JSON_HEX_APOS|JSON_HEX_QUOT;
}
$res = json_encode($data, $options);
self::checkException($options);
return $res;
}
/**
* Takes a JSON encoded string and converts it into a PHP variable.
*
* @param string $data The json string being decoded.
*
* @return mixed
* @throws ArgumentException
* @see json_decode
*/
public static function decode($data)
{
$res = json_decode($data, true);
self::checkException();
// PHP<5.3.3 returns no error for JSON_ERROR_UTF8 and some other ones
if($res === null && strtolower($data) != 'null')
{
self::throwException(self::JSON_ERROR_UNKNOWN);
}
if (!Application::getInstance()->isUtfMode())
{
$res = self::unConvertData($res);
}
return $res;
}
/**
* Executes serializeJson on JsonSerializable objects for non-UTF8 instances.
* We have to do it manually to prevent "malformed UTF-8 characters" error.
*
* @param mixed $data
*/
protected static function serializeJson(&$data)
{
if($data instanceof \JsonSerializable)
{
$data = $data->jsonSerialize();
}
if (is_iterable($data))
{
foreach ($data as $key => $value)
{
self::serializeJson($data[$key]);
}
}
}
/**
* Converts $data to UTF-8 charset.
*
* @param mixed $data Input data.
* @return mixed
*/
protected static function convertData($data)
{
$culture = Context::getCurrent()->getCulture();
return Encoding::convertEncoding($data, $culture->getCharset(), 'UTF-8');
}
/**
* Converts $data from UTF-8 charset.
*
* @param mixed $data Input data.
* @return mixed
*/
protected static function unConvertData($data)
{
$culture = Context::getCurrent()->getCulture();
return Encoding::convertEncoding($data, 'UTF-8', $culture->getCharset());
}
/**
* Checks global error flag and raises exception if needed.
*
* @param integer $options Bitmasked options. When JSON_PARTIAL_OUTPUT_ON_ERROR passed no exception is raised.
*
* @return void
* @throws ArgumentException
*/
protected static function checkException($options = 0)
{
$e = json_last_error();
if ($e == JSON_ERROR_NONE)
{
return;
}
if ($e == JSON_ERROR_UTF8 && ($options & JSON_PARTIAL_OUTPUT_ON_ERROR))
{
return;
}
$message = sprintf('%s [%d]', json_last_error_msg(), $e);
self::throwException($message);
}
/**
* Throws exception with message given.
*
* @param string $e Exception message.
*
* @return void
* @throws ArgumentException
*/
protected static function throwException($e)
{
throw new ArgumentException('JSON error: '.$e, 'data');
}
}