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Файл: symfony-2.7/src/Symfony/Component/Validator/Constraints/IsbnValidator.php
Строк: 277
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace SymfonyComponentValidatorConstraints;

use 
SymfonyComponentValidatorContextExecutionContextInterface;
use 
SymfonyComponentValidatorConstraint;
use 
SymfonyComponentValidatorConstraintValidator;
use 
SymfonyComponentValidatorExceptionUnexpectedTypeException;

/**
 * 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>
 *
 * @see https://en.wikipedia.org/wiki/Isbn
 */
class IsbnValidator extends ConstraintValidator
{
    
/**
     * {@inheritdoc}
     */
    
public function validate($valueConstraint $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 intval(10 $i);
        }

        if (isset(
$isbn{$i})) {
            return 
Isbn::TOO_LONG_ERROR;
        }

        return 
=== $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 
=== $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;
    }
}
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