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1 <?php
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2
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3 /*
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4 * This file is part of the Symfony package.
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5 *
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6 * (c) Fabien Potencier <fabien@symfony.com>
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7 *
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8 * For the full copyright and license information, please view the LICENSE
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9 * file that was distributed with this source code.
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10 */
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11
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12 namespace Symfony\Component\Validator\Constraints;
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13
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14 use Symfony\Component\Intl\Intl;
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15 use Symfony\Component\Validator\Constraint;
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16 use Symfony\Component\Validator\ConstraintValidator;
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17 use Symfony\Component\Validator\Exception\UnexpectedTypeException;
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18
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19 /**
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20 * Validates whether a value is a valid currency.
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21 *
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22 * @author Miha Vrhovnik <miha.vrhovnik@pagein.si>
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23 * @author Bernhard Schussek <bschussek@gmail.com>
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24 */
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25 class CurrencyValidator extends ConstraintValidator
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26 {
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27 /**
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28 * {@inheritdoc}
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29 */
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30 public function validate($value, Constraint $constraint)
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31 {
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32 if (!$constraint instanceof Currency) {
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33 throw new UnexpectedTypeException($constraint, __NAMESPACE__.'\Currency');
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34 }
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35
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36 if (null === $value || '' === $value) {
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37 return;
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38 }
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39
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40 if (!is_scalar($value) && !(\is_object($value) && method_exists($value, '__toString'))) {
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41 throw new UnexpectedTypeException($value, 'string');
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42 }
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43
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44 $value = (string) $value;
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45 $currencies = Intl::getCurrencyBundle()->getCurrencyNames();
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46
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47 if (!isset($currencies[$value])) {
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48 $this->context->buildViolation($constraint->message)
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49 ->setParameter('{{ value }}', $this->formatValue($value))
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50 ->setCode(Currency::NO_SUCH_CURRENCY_ERROR)
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51 ->addViolation();
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52 }
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53 }
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54 }
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