--- /dev/null
+<?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;
+
+/**
+ * @author Michael Hirschler <michael.vhirsch@gmail.com>
+ *
+ * @see https://en.wikipedia.org/wiki/ISO_9362#Structure
+ */
+class BicValidator extends ConstraintValidator
+{
+ /**
+ * {@inheritdoc}
+ */
+ public function validate($value, Constraint $constraint)
+ {
+ if (null === $value || '' === $value) {
+ return;
+ }
+
+ $canonicalize = str_replace(' ', '', $value);
+
+ // the bic must be either 8 or 11 characters long
+ if (!in_array(strlen($canonicalize), array(8, 11))) {
+ $this->context->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Bic::INVALID_LENGTH_ERROR)
+ ->addViolation();
+
+ return;
+ }
+
+ // must contain alphanumeric values only
+ if (!ctype_alnum($canonicalize)) {
+ $this->context->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Bic::INVALID_CHARACTERS_ERROR)
+ ->addViolation();
+
+ return;
+ }
+
+ // first 4 letters must be alphabetic (bank code)
+ if (!ctype_alpha(substr($canonicalize, 0, 4))) {
+ $this->context->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Bic::INVALID_BANK_CODE_ERROR)
+ ->addViolation();
+
+ return;
+ }
+
+ // next 2 letters must be alphabetic (country code)
+ if (!ctype_alpha(substr($canonicalize, 4, 2))) {
+ $this->context->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Bic::INVALID_COUNTRY_CODE_ERROR)
+ ->addViolation();
+
+ return;
+ }
+
+ // should contain uppercase characters only
+ if (strtoupper($canonicalize) !== $canonicalize) {
+ $this->context->buildViolation($constraint->message)
+ ->setParameter('{{ value }}', $this->formatValue($value))
+ ->setCode(Bic::INVALID_CASE_ERROR)
+ ->addViolation();
+
+ return;
+ }
+ }
+}