class IsbnValidator in Zircon Profile 8
Same name and namespace in other branches
- 8.0 vendor/symfony/validator/Constraints/IsbnValidator.php \Symfony\Component\Validator\Constraints\IsbnValidator
Validates whether the value is a valid ISBN-10 or ISBN-13.
@author The Whole Life To Learn <thewholelifetolearn@gmail.com> @author Manuel Reinhard <manu@sprain.ch> @author Bernhard Schussek <bschussek@gmail.com>
Hierarchy
- class \Symfony\Component\Validator\ConstraintValidator implements ConstraintValidatorInterface
- class \Symfony\Component\Validator\Constraints\IsbnValidator
Expanded class hierarchy of IsbnValidator
See also
https://en.wikipedia.org/wiki/Isbn
1 file declares its use of IsbnValidator
- IsbnValidatorTest.php in vendor/
symfony/ validator/ Tests/ Constraints/ IsbnValidatorTest.php
File
- vendor/
symfony/ validator/ Constraints/ IsbnValidator.php, line 28
Namespace
Symfony\Component\Validator\ConstraintsView source
class IsbnValidator extends ConstraintValidator {
/**
* {@inheritdoc}
*/
public function validate($value, Constraint $constraint) {
if (!$constraint instanceof Isbn) {
throw new UnexpectedTypeException($constraint, __NAMESPACE__ . '\\Isbn');
}
if (null === $value || '' === $value) {
return;
}
if (!is_scalar($value) && !(is_object($value) && method_exists($value, '__toString'))) {
throw new UnexpectedTypeException($value, 'string');
}
$value = (string) $value;
$canonical = str_replace('-', '', $value);
if (null === $constraint->type) {
if ($constraint->isbn10 && !$constraint->isbn13) {
@trigger_error('The "isbn10" option of the Isbn constraint is deprecated since version 2.5 and will be removed in 3.0. Use the "type" option instead.', E_USER_DEPRECATED);
$constraint->type = 'isbn10';
}
elseif ($constraint->isbn13 && !$constraint->isbn10) {
@trigger_error('The "isbn13" option of the Isbn constraint is deprecated since version 2.5 and will be removed in 3.0. Use the "type" option instead.', E_USER_DEPRECATED);
$constraint->type = 'isbn13';
}
}
// Explicitly validate against ISBN-10
if ('isbn10' === $constraint->type) {
if (true !== ($code = $this
->validateIsbn10($canonical))) {
if ($this->context instanceof ExecutionContextInterface) {
$this->context
->buildViolation($this
->getMessage($constraint, $constraint->type))
->setParameter('{{ value }}', $this
->formatValue($value))
->setCode($code)
->addViolation();
}
else {
$this
->buildViolation($this
->getMessage($constraint, $constraint->type))
->setParameter('{{ value }}', $this
->formatValue($value))
->setCode($code)
->addViolation();
}
}
return;
}
// Explicitly validate against ISBN-13
if ('isbn13' === $constraint->type) {
if (true !== ($code = $this
->validateIsbn13($canonical))) {
if ($this->context instanceof ExecutionContextInterface) {
$this->context
->buildViolation($this
->getMessage($constraint, $constraint->type))
->setParameter('{{ value }}', $this
->formatValue($value))
->setCode($code)
->addViolation();
}
else {
$this
->buildViolation($this
->getMessage($constraint, $constraint->type))
->setParameter('{{ value }}', $this
->formatValue($value))
->setCode($code)
->addViolation();
}
}
return;
}
// Try both ISBNs
// First, try ISBN-10
$code = $this
->validateIsbn10($canonical);
// The ISBN can only be an ISBN-13 if the value was too long for ISBN-10
if (Isbn::TOO_LONG_ERROR === $code) {
// Try ISBN-13 now
$code = $this
->validateIsbn13($canonical);
// If too short, this means we have 11 or 12 digits
if (Isbn::TOO_SHORT_ERROR === $code) {
$code = Isbn::TYPE_NOT_RECOGNIZED_ERROR;
}
}
if (true !== $code) {
if ($this->context instanceof ExecutionContextInterface) {
$this->context
->buildViolation($this
->getMessage($constraint))
->setParameter('{{ value }}', $this
->formatValue($value))
->setCode($code)
->addViolation();
}
else {
$this
->buildViolation($this
->getMessage($constraint))
->setParameter('{{ value }}', $this
->formatValue($value))
->setCode($code)
->addViolation();
}
}
}
protected function validateIsbn10($isbn) {
// Choose an algorithm so that ERROR_INVALID_CHARACTERS is preferred
// over ERROR_TOO_SHORT/ERROR_TOO_LONG
// Otherwise "0-45122-5244" passes, but "0-45122_5244" reports
// "too long"
// Error priority:
// 1. ERROR_INVALID_CHARACTERS
// 2. ERROR_TOO_SHORT/ERROR_TOO_LONG
// 3. ERROR_CHECKSUM_FAILED
$checkSum = 0;
for ($i = 0; $i < 10; ++$i) {
// If we test the length before the loop, we get an ERROR_TOO_SHORT
// when actually an ERROR_INVALID_CHARACTERS is wanted, e.g. for
// "0-45122_5244" (typo)
if (!isset($isbn[$i])) {
return Isbn::TOO_SHORT_ERROR;
}
if ('X' === $isbn[$i]) {
$digit = 10;
}
elseif (ctype_digit($isbn[$i])) {
$digit = $isbn[$i];
}
else {
return Isbn::INVALID_CHARACTERS_ERROR;
}
$checkSum += $digit * (10 - $i);
}
if (isset($isbn[$i])) {
return Isbn::TOO_LONG_ERROR;
}
return 0 === $checkSum % 11 ? true : Isbn::CHECKSUM_FAILED_ERROR;
}
protected function validateIsbn13($isbn) {
// Error priority:
// 1. ERROR_INVALID_CHARACTERS
// 2. ERROR_TOO_SHORT/ERROR_TOO_LONG
// 3. ERROR_CHECKSUM_FAILED
if (!ctype_digit($isbn)) {
return Isbn::INVALID_CHARACTERS_ERROR;
}
$length = strlen($isbn);
if ($length < 13) {
return Isbn::TOO_SHORT_ERROR;
}
if ($length > 13) {
return Isbn::TOO_LONG_ERROR;
}
$checkSum = 0;
for ($i = 0; $i < 13; $i += 2) {
$checkSum += $isbn[$i];
}
for ($i = 1; $i < 12; $i += 2) {
$checkSum += $isbn[$i] * 3;
}
return 0 === $checkSum % 10 ? true : Isbn::CHECKSUM_FAILED_ERROR;
}
protected function getMessage($constraint, $type = null) {
if (null !== $constraint->message) {
return $constraint->message;
}
elseif ('isbn10' === $type) {
return $constraint->isbn10Message;
}
elseif ('isbn13' === $type) {
return $constraint->isbn13Message;
}
return $constraint->bothIsbnMessage;
}
}
Members
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
ConstraintValidator:: |
protected | property | 3 | |
ConstraintValidator:: |
protected | function | Wrapper for {@link ExecutionContextInterface::buildViolation} that supports the 2.4 context API. | |
ConstraintValidator:: |
protected | function | Wrapper for {@link ExecutionContextInterface::buildViolation} that supports the 2.4 context API. | |
ConstraintValidator:: |
protected | function | Returns a string representation of the type of the value. | |
ConstraintValidator:: |
protected | function | Returns a string representation of the value. | |
ConstraintValidator:: |
protected | function | Returns a string representation of a list of values. | |
ConstraintValidator:: |
public | function |
Initializes the constraint validator. Overrides ConstraintValidatorInterface:: |
1 |
ConstraintValidator:: |
constant | Whether to cast objects with a "__toString()" method to strings. | ||
ConstraintValidator:: |
constant | Whether to format {@link \DateTime} objects as RFC-3339 dates ("Y-m-d H:i:s"). | ||
IsbnValidator:: |
protected | function | ||
IsbnValidator:: |
public | function |
Checks if the passed value is valid. Overrides ConstraintValidatorInterface:: |
|
IsbnValidator:: |
protected | function | ||
IsbnValidator:: |
protected | function |