2013-01-12 13:38:26 +00:00
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Validator\Constraints;
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use Symfony\Component\Validator\Constraint;
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use Symfony\Component\Validator\ConstraintValidator;
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use Symfony\Component\Validator\Exception\UnexpectedTypeException;
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/**
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2013-04-21 12:14:35 +01:00
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* Validates whether the value is a valid ISBN-10 or ISBN-13.
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2013-04-20 14:37:23 +01:00
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*
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2013-01-12 13:38:26 +00:00
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* @author The Whole Life To Learn <thewholelifetolearn@gmail.com>
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*
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2013-04-20 14:37:23 +01:00
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* @see https://en.wikipedia.org/wiki/Isbn
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2013-01-12 13:38:26 +00:00
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*/
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class IsbnValidator extends ConstraintValidator
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{
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/**
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2014-04-15 06:57:34 +01:00
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* {@inheritdoc}
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2013-01-12 13:38:26 +00:00
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*/
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public function validate($value, Constraint $constraint)
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{
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if (null === $value || '' === $value) {
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return;
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}
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if (!is_scalar($value) && !(is_object($value) && method_exists($value, '__toString'))) {
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throw new UnexpectedTypeException($value, 'string');
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}
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if (!is_numeric($value)) {
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$value = str_replace('-', '', $value);
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}
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2013-04-20 14:37:23 +01:00
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2013-01-12 13:38:26 +00:00
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$validation = 0;
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$value = strtoupper($value);
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$valueLength = strlen($value);
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if (10 === $valueLength && null !== $constraint->isbn10) {
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for ($i = 0; $i < 10; $i++) {
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if ($value[$i] == 'X') {
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$validation += 10 * intval(10 - $i);
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} else {
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$validation += intval($value[$i]) * intval(10 - $i);
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}
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}
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if ($validation % 11 != 0) {
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if (null !== $constraint->isbn13) {
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$this->context->addViolation($constraint->bothIsbnMessage);
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} else {
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$this->context->addViolation($constraint->isbn10Message);
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}
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}
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} elseif (13 === $valueLength && null !== $constraint->isbn13) {
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for ($i = 0; $i < 13; $i += 2) {
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$validation += intval($value[$i]);
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}
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for ($i = 1; $i < 12; $i += 2) {
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$validation += intval($value[$i]) * 3;
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}
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if ($validation % 10 != 0) {
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if (null !== $constraint->isbn10) {
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$this->context->addViolation($constraint->bothIsbnMessage);
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} else {
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$this->context->addViolation($constraint->isbn13Message);
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}
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}
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} else {
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if (null !== $constraint->isbn10 && null !== $constraint->isbn13) {
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$this->context->addViolation($constraint->bothIsbnMessage);
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} elseif (null !== $constraint->isbn10) {
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$this->context->addViolation($constraint->isbn10Message);
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} else {
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$this->context->addViolation($constraint->isbn13Message);
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}
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}
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}
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}
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