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<?php
namespace Kreait\Firebase\Util;
use Kreait\Firebase\Exception\InvalidArgumentException;
class JSON
{
/**
* Wrapper for JSON encoding that throws when an error occurs.
*
* Shamelessly copied from Guzzle.
*
* @see \GuzzleHttp\json_encode()
*
* @param mixed $value The value being encoded
* @param int $options JSON encode option bitmask
* @param int $depth Set the maximum depth. Must be greater than zero
*
* @throws InvalidArgumentException if the JSON cannot be encoded
*
* @return string
*/
public static function encode($value, $options = null, $depth = null): string
{
$options = $options ?? 0;
$depth = $depth ?? 512;
$json = \json_encode($value, $options, $depth);
if (json_last_error() !== JSON_ERROR_NONE) {
throw new InvalidArgumentException(
'json_encode error: '.json_last_error_msg());
}
return $json;
}
/**
* Wrapper for json_decode that throws when an error occurs.
*
* Shamelessly copied from Guzzle.
*
* @see \GuzzleHttp\json_encode()
*
* @param string $json JSON data to parse
* @param bool $assoc When true, returned objects will be converted into associative arrays
* @param int $depth User specified recursion depth
* @param int $options Bitmask of JSON decode options
*
* @throws \InvalidArgumentException if the JSON cannot be decoded
*
* @return mixed
*/
public static function decode($json, $assoc = null, $depth = null, $options = null)
{
$data = \json_decode($json, $assoc ?? false, $depth ?? 512, $options ?? 0);
if (json_last_error() !== JSON_ERROR_NONE) {
throw new InvalidArgumentException(
'json_decode error: '.json_last_error_msg());
}
return $data;
}
/**
* Returns true if the given value is a valid JSON string.
*
* @param mixed $value
*
* @return bool
*/
public static function isValid($value): bool
{
try {
self::decode($value);
return true;
} catch (\Throwable $e) {
return false;
}
}
public static function prettyPrint($value): string
{
return self::encode($value, JSON_PRETTY_PRINT);
}
}
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