IssnValidator.php — MailPoet – Newsletters, Email Marketing, and Automation 5.36.0

mailpoet / vendor-prefixed / symfony / validator / Constraints / IssnValidator.php

mailpoet / vendor-prefixed / symfony / validator / Constraints Last commit date

IssnValidator.php

70 lines

1	<?php
2	namespace MailPoetVendor\Symfony\Component\Validator\Constraints;
3	if (!defined('ABSPATH')) exit;
4	use MailPoetVendor\Symfony\Component\Validator\Constraint;
5	use MailPoetVendor\Symfony\Component\Validator\ConstraintValidator;
6	use MailPoetVendor\Symfony\Component\Validator\Exception\UnexpectedTypeException;
7	use MailPoetVendor\Symfony\Component\Validator\Exception\UnexpectedValueException;
8	class IssnValidator extends ConstraintValidator
9	{
10	public function validate($value, Constraint $constraint)
11	{
12	if (!$constraint instanceof Issn) {
13	throw new UnexpectedTypeException($constraint, Issn::class);
14	}
15	if (null === $value \|\| '' === $value) {
16	return;
17	}
18	if (!\is_scalar($value) && !(\is_object($value) && \method_exists($value, '__toString'))) {
19	throw new UnexpectedValueException($value, 'string');
20	}
21	$value = (string) $value;
22	$canonical = $value;
23	// 1234-567X
24	// ^
25	if (isset($canonical[4]) && '-' === $canonical[4]) {
26	// remove hyphen
27	$canonical = \substr($canonical, 0, 4) . \substr($canonical, 5);
28	} elseif ($constraint->requireHyphen) {
29	$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::MISSING_HYPHEN_ERROR)->addViolation();
30	return;
31	}
32	$length = \strlen($canonical);
33	if ($length < 8) {
34	$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::TOO_SHORT_ERROR)->addViolation();
35	return;
36	}
37	if ($length > 8) {
38	$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::TOO_LONG_ERROR)->addViolation();
39	return;
40	}
41	// 1234567X
42	// ^^^^^^^ digits only
43	if (!\ctype_digit(\substr($canonical, 0, 7))) {
44	$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::INVALID_CHARACTERS_ERROR)->addViolation();
45	return;
46	}
47	// 1234567X
48	// ^ digit, x or X
49	if (!\ctype_digit($canonical[7]) && 'x' !== $canonical[7] && 'X' !== $canonical[7]) {
50	$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::INVALID_CHARACTERS_ERROR)->addViolation();
51	return;
52	}
53	// 1234567X
54	// ^ case-sensitive?
55	if ($constraint->caseSensitive && 'x' === $canonical[7]) {
56	$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::INVALID_CASE_ERROR)->addViolation();
57	return;
58	}
59	// Calculate a checksum. "X" equals 10.
60	$checkSum = 'X' === $canonical[7] \|\| 'x' === $canonical[7] ? 10 : $canonical[7];
61	for ($i = 0; $i < 7; ++$i) {
62	// Multiply the first digit by 8, the second by 7, etc.
63	$checkSum += (8 - $i) * (int) $canonical[$i];
64	}
65	if (0 !== $checkSum % 11) {
66	$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::CHECKSUM_FAILED_ERROR)->addViolation();
67	}
68	}
69	}
70