<?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 UuidValidator extends ConstraintValidator
{
 // The strict pattern matches UUIDs like this:
 // xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx
 // Roughly speaking:
 // x = any hexadecimal character
 // M = any allowed version {1..6}
 // N = any allowed variant {8, 9, a, b}
 public const STRICT_LENGTH = 36;
 public const STRICT_FIRST_HYPHEN_POSITION = 8;
 public const STRICT_LAST_HYPHEN_POSITION = 23;
 public const STRICT_VERSION_POSITION = 14;
 public const STRICT_VARIANT_POSITION = 19;
 // The loose pattern validates similar yet non-compliant UUIDs.
 // Hyphens are completely optional. If present, they should only appear
 // between every fourth character:
 // xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx
 // xxxxxxxxxxxx-xxxx-xxxx-xxxx-xxxx-xxxx
 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 // The value can also be wrapped with characters like []{}:
 // {xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx}
 // Neither the version nor the variant is validated by this pattern.
 public const LOOSE_MAX_LENGTH = 39;
 public const LOOSE_FIRST_HYPHEN_POSITION = 4;
 public function validate($value, Constraint $constraint)
 {
 if (!$constraint instanceof Uuid) {
 throw new UnexpectedTypeException($constraint, Uuid::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;
 if (null !== $constraint->normalizer) {
 $value = ($constraint->normalizer)($value);
 }
 if ($constraint->strict) {
 $this->validateStrict($value, $constraint);
 return;
 }
 $this->validateLoose($value, $constraint);
 }
 private function validateLoose(string $value, Uuid $constraint)
 {
 // Error priority:
 // 1. ERROR_INVALID_CHARACTERS
 // 2. ERROR_INVALID_HYPHEN_PLACEMENT
 // 3. ERROR_TOO_SHORT/ERROR_TOO_LONG
 // Trim any wrapping characters like [] or {} used by some legacy systems
 $trimmed = \trim($value, '[]{}');
 // Position of the next expected hyphen
 $h = self::LOOSE_FIRST_HYPHEN_POSITION;
 // Expected length
 $l = self::LOOSE_MAX_LENGTH;
 for ($i = 0; $i < $l; ++$i) {
 // Check length
 if (!isset($trimmed[$i])) {
 $this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Uuid::TOO_SHORT_ERROR)->addViolation();
 return;
 }
 // Hyphens must occur every fifth position
 // xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxx
 // ^ ^ ^ ^ ^ ^ ^
 if ('-' === $trimmed[$i]) {
 if ($i !== $h) {
 $this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Uuid::INVALID_HYPHEN_PLACEMENT_ERROR)->addViolation();
 return;
 }
 $h += 5;
 continue;
 }
 // Missing hyphens are ignored
 if ($i === $h) {
 $h += 4;
 --$l;
 }
 // Check characters
 if (!\ctype_xdigit($trimmed[$i])) {
 $this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Uuid::INVALID_CHARACTERS_ERROR)->addViolation();
 return;
 }
 }
 // Check length again
 if (isset($trimmed[$i])) {
 $this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Uuid::TOO_LONG_ERROR)->addViolation();
 }
 }
 private function validateStrict(string $value, Uuid $constraint)
 {
 // Error priority:
 // 1. ERROR_INVALID_CHARACTERS
 // 2. ERROR_INVALID_HYPHEN_PLACEMENT
 // 3. ERROR_TOO_SHORT/ERROR_TOO_LONG
 // 4. ERROR_INVALID_VERSION
 // 5. ERROR_INVALID_VARIANT
 // Position of the next expected hyphen
 $h = self::STRICT_FIRST_HYPHEN_POSITION;
 for ($i = 0; $i < self::STRICT_LENGTH; ++$i) {
 // Check length
 if (!isset($value[$i])) {
 $this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Uuid::TOO_SHORT_ERROR)->addViolation();
 return;
 }
 // Check hyphen placement
 // xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
 // ^ ^ ^ ^
 if ('-' === $value[$i]) {
 if ($i !== $h) {
 $this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Uuid::INVALID_HYPHEN_PLACEMENT_ERROR)->addViolation();
 return;
 }
 // xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
 // ^
 if ($h < self::STRICT_LAST_HYPHEN_POSITION) {
 $h += 5;
 }
 continue;
 }
 // Check characters
 if (!\ctype_xdigit($value[$i])) {
 $this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Uuid::INVALID_CHARACTERS_ERROR)->addViolation();
 return;
 }
 // Missing hyphen
 if ($i === $h) {
 $this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Uuid::INVALID_HYPHEN_PLACEMENT_ERROR)->addViolation();
 return;
 }
 }
 // Check length again
 if (isset($value[$i])) {
 $this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Uuid::TOO_LONG_ERROR)->addViolation();
 }
 // Check version
 if (!\in_array($value[self::STRICT_VERSION_POSITION], $constraint->versions)) {
 $this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Uuid::INVALID_VERSION_ERROR)->addViolation();
 }
 // Check variant - first two bits must equal "10"
 // 0b10xx
 // & 0b1100 (12)
 // = 0b1000 (8)
 if (8 !== (\hexdec($value[self::STRICT_VARIANT_POSITION]) & 12)) {
 $this->context->buildViolation($constraint->message)->setParameter('{{ value }}', $this->formatValue($value))->setCode(Uuid::INVALID_VARIANT_ERROR)->addViolation();
 }
 }
}
