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<?php
namespace gipfl\Json;
use function json_decode;
use function json_encode;
use function json_last_error;
class JsonString
{
const DEFAULT_FLAGS = JSON_PRESERVE_ZERO_FRACTION | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE;
/**
* Encode with well-known flags, as we require the result to be reproducible
*
* @param $mixed
* @param int|null $flags
* @return string
* @throws JsonEncodeException
*/
public static function encode($mixed, $flags = null)
{
if ($flags === null) {
$flags = self::DEFAULT_FLAGS;
} else {
$flags = self::DEFAULT_FLAGS | $flags;
}
$result = json_encode($mixed, $flags);
if ($result === false && json_last_error() !== JSON_ERROR_NONE) {
throw JsonEncodeException::forLastJsonError();
}
return $result;
}
/**
* Decode the given JSON string and make sure we get a meaningful Exception
*
* @param string $string
* @return mixed
* @throws JsonDecodeException
*/
public static function decode($string)
{
$result = json_decode($string);
if ($result === null && json_last_error() !== JSON_ERROR_NONE) {
throw JsonDecodeException::forLastJsonError();
}
return $result;
}
/**
* @param $string
* @return ?string
* @throws JsonDecodeException
*/
public static function decodeOptional($string)
{
if ($string === null) {
return null;
}
return static::decode($string);
}
}
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