|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
namespace Yiisoft\Validator\Rule; |
|
6
|
|
|
|
|
7
|
|
|
use Yiisoft\Validator\Exception\UnexpectedRuleException; |
|
8
|
|
|
use Yiisoft\Validator\Result; |
|
9
|
|
|
use Yiisoft\Validator\RuleHandlerInterface; |
|
10
|
|
|
use Yiisoft\Validator\ValidationContext; |
|
11
|
|
|
|
|
12
|
|
|
use function is_string; |
|
13
|
|
|
|
|
14
|
|
|
/** |
|
15
|
|
|
* Validates that the value is a valid json. |
|
16
|
|
|
*/ |
|
17
|
|
|
final class JsonHandler implements RuleHandlerInterface |
|
18
|
|
|
{ |
|
19
|
10 |
|
public function validate(mixed $value, object $rule, ValidationContext $context): Result |
|
20
|
|
|
{ |
|
21
|
10 |
|
if (!$rule instanceof Json) { |
|
22
|
1 |
|
throw new UnexpectedRuleException(Json::class, $rule); |
|
23
|
|
|
} |
|
24
|
|
|
|
|
25
|
9 |
|
$result = new Result(); |
|
26
|
|
|
|
|
27
|
9 |
|
if (!$this->isValidJson($value)) { |
|
28
|
6 |
|
$result->addError( |
|
29
|
6 |
|
message: $rule->getMessage(), |
|
30
|
6 |
|
parameters: ['value' => $value] |
|
31
|
|
|
); |
|
32
|
|
|
} |
|
33
|
|
|
|
|
34
|
9 |
|
return $result; |
|
35
|
|
|
} |
|
36
|
|
|
|
|
37
|
9 |
|
private function isValidJson($value): bool |
|
38
|
|
|
{ |
|
39
|
|
|
// Regular expression is built based on JSON grammar specified at |
|
40
|
|
|
// https://tools.ietf.org/html/rfc8259 |
|
41
|
9 |
|
$regex = <<<'REGEX' |
|
42
|
|
|
/ |
|
43
|
|
|
(?(DEFINE) |
|
44
|
|
|
(?<json>(?>\s*(?&object)\s*|\s*(?&array)\s*)) |
|
45
|
|
|
(?<object>(?>\{\s*(?>(?&member)(?>\s*,\s*(?&member))*)?\s*\})) |
|
46
|
|
|
(?<member>(?>(?&string)\s*:\s*(?&value))) |
|
47
|
|
|
(?<array>(?>\[\s*(?>(?&value)(?>\s*,\s*(?&value))*)?\s*\])) |
|
48
|
|
|
(?<value>(?>)false|null|true|(?&object)|(?&array)|(?&number)|(?&string)) |
|
49
|
|
|
(?<number>(?>-?(?>0|[1-9]\d*)(?>\.\d+)?(?>[eE][-+]?\d+)?)) |
|
50
|
|
|
(?<string>(?>"(?>\\(?>["\\\/bfnrt]|u[a-fA-F0-9]{4})|[^"\\\0-\x1F\x7F]+)*")) |
|
51
|
|
|
) |
|
52
|
|
|
\A(?&json)\z |
|
53
|
|
|
/x |
|
54
|
|
|
REGEX; |
|
55
|
|
|
|
|
56
|
9 |
|
return is_string($value) && preg_match($regex, $value) === 1; |
|
57
|
|
|
} |
|
58
|
|
|
} |
|
59
|
|
|
|
yiisoft /
validator
