isValidBIC function
Validate BIC/SWIFT
// returns `true`
ibantools.isValidBIC("ABNANL2A");
// returns `true`
ibantools.isValidBIC("NEDSZAJJXXX");
// returns `false`
ibantools.isValidBIC("ABN4NL2A");
// returns `false`
ibantools.isValidBIC("ABNA NL 2A");
Implementation
bool isValidBIC(String? bic) {
if (bic == null) {
return false;
}
final RegExp reg = RegExp(r'^[a-zA-Z]{6}[a-zA-Z0-9]{2}([a-zA-Z0-9]{3})?$');
final CountrySpec? spec = countrySpecs[bic.toUpperCase().substring(4, 6)];
return reg.hasMatch(bic) && spec != null;
}