File "IssnValidator.php"
Full Path: /home/warrior1/public_html/languages/wp-content/plugins/mailpoet/vendor-prefixed/symfony/validator/Constraints/IssnValidator.php
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MIME-type: text/x-php
Charset: utf-8
<?php
namespace MailPoetVendor\Symfony\Component\Validator\Constraints;
if (!defined('ABSPATH')) exit;
use MailPoetVendor\Symfony\Component\Validator\Constraint;
use MailPoetVendor\Symfony\Component\Validator\ConstraintValidator;
use MailPoetVendor\Symfony\Component\Validator\Exception\UnexpectedTypeException;
use MailPoetVendor\Symfony\Component\Validator\Exception\UnexpectedValueException;
class IssnValidator extends ConstraintValidator
{
public function validate($value, Constraint $constraint)
{
if (!$constraint instanceof Issn) {
throw new UnexpectedTypeException($constraint, Issn::class);
}
if (null === $value || '' === $value) {
return;
}
if (!\is_scalar($value) && !(\is_object($value) && \method_exists($value, '__toString'))) {
throw new UnexpectedValueException($value, 'string');
}
$value = (string) $value;
$canonical = $value;
// 1234-567X
// ^
if (isset($canonical[4]) && '-' === $canonical[4]) {
// remove hyphen
$canonical = \substr($canonical, 0, 4) . \substr($canonical, 5);
} elseif ($constraint->requireHyphen) {
$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::MISSING_HYPHEN_ERROR)->addViolation();
return;
}
$length = \strlen($canonical);
if ($length < 8) {
$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::TOO_SHORT_ERROR)->addViolation();
return;
}
if ($length > 8) {
$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::TOO_LONG_ERROR)->addViolation();
return;
}
// 1234567X
// ^^^^^^^ digits only
if (!\ctype_digit(\substr($canonical, 0, 7))) {
$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::INVALID_CHARACTERS_ERROR)->addViolation();
return;
}
// 1234567X
// ^ digit, x or X
if (!\ctype_digit($canonical[7]) && 'x' !== $canonical[7] && 'X' !== $canonical[7]) {
$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::INVALID_CHARACTERS_ERROR)->addViolation();
return;
}
// 1234567X
// ^ case-sensitive?
if ($constraint->caseSensitive && 'x' === $canonical[7]) {
$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::INVALID_CASE_ERROR)->addViolation();
return;
}
// Calculate a checksum. "X" equals 10.
$checkSum = 'X' === $canonical[7] || 'x' === $canonical[7] ? 10 : $canonical[7];
for ($i = 0; $i < 7; ++$i) {
// Multiply the first digit by 8, the second by 7, etc.
$checkSum += (8 - $i) * (int) $canonical[$i];
}
if (0 !== $checkSum % 11) {
$this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Issn::CHECKSUM_FAILED_ERROR)->addViolation();
}
}
}