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LengthValidator.php
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LengthValidator.php
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<?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 Symfony\Component\Validator\Constraints;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;
/**
* @author Bernhard Schussek <bschussek@gmail.com>
*/
class LengthValidator extends ConstraintValidator
{
/**
* {@inheritdoc}
*/
public function validate($value, Constraint $constraint)
{
if (!$constraint instanceof Length) {
throw new UnexpectedTypeException($constraint, __NAMESPACE__.'\Length');
}
if (null === $value || '' === $value) {
return;
}
if (!is_scalar($value) && !(is_object($value) && method_exists($value, '__toString'))) {
throw new UnexpectedTypeException($value, 'string');
}
$stringValue = (string) $value;
$invalidCharset = false;
if ('UTF8' === $charset = strtoupper($constraint->charset)) {
$charset = 'UTF-8';
}
if (function_exists('iconv_strlen')) {
$length = @iconv_strlen($stringValue, $constraint->charset);
$invalidCharset = false === $length;
} elseif (function_exists('mb_strlen')) {
if (mb_check_encoding($stringValue, $constraint->charset)) {
$length = mb_strlen($stringValue, $constraint->charset);
} else {
$invalidCharset = true;
}
} elseif ('UTF-8' !== $charset) {
$length = strlen($stringValue);
} elseif (!preg_match('//u', $stringValue)) {
$invalidCharset = true;
} elseif (function_exists('utf8_decode')) {
$length = strlen(utf8_decode($stringValue));
} else {
preg_replace('/./u', '', $stringValue, -1, $length);
}
if ($invalidCharset) {
$this->buildViolation($constraint->charsetMessage)
->setParameter('{{ value }}', $this->formatValue($stringValue))
->setParameter('{{ charset }}', $constraint->charset)
->setInvalidValue($value)
->addViolation();
return;
}
if (null !== $constraint->max && $length > $constraint->max) {
$this->buildViolation($constraint->min == $constraint->max ? $constraint->exactMessage : $constraint->maxMessage)
->setParameter('{{ value }}', $this->formatValue($stringValue))
->setParameter('{{ limit }}', $constraint->max)
->setInvalidValue($value)
->setPlural((int) $constraint->max)
->setCode(Length::TOO_LONG_ERROR)
->addViolation();
return;
}
if (null !== $constraint->min && $length < $constraint->min) {
$this->buildViolation($constraint->min == $constraint->max ? $constraint->exactMessage : $constraint->minMessage)
->setParameter('{{ value }}', $this->formatValue($stringValue))
->setParameter('{{ limit }}', $constraint->min)
->setInvalidValue($value)
->setPlural((int) $constraint->min)
->setCode(Length::TOO_SHORT_ERROR)
->addViolation();
}
}
}