private static void validateCountryCode(string iban)
{
if (iban.Length < Consts.IBAN_COUNTRY_CODE_LENGTH)
{
throw new IbanFormatException("Input must contain 2 letters for country code", IbanFormatViolation.COUNTRY_CODE_TWO_LETTERS, iban);
}
string countryCode = GetCountryCode(iban);
if (!countryCode.Equals(countryCode.ToUpper()) || !char.IsLetter(iban[0]) || !char.IsLetter(iban[1]))
{
throw new IbanFormatException("IBAN's country code must contain upper case letters", IbanFormatViolation.COUNTRY_CODE_UPPER_CASE_LETTERS, iban);
}
CountryCodeEntry countryEntry = CountryCode.GetCountryCode(countryCode);
if (countryEntry == null)
{
throw new IbanFormatException("IBAN contains non existing country code", IbanFormatViolation.COUNTRY_CODE_EXISTS, iban);
}
BBanStructure structure = Bban.GetStructureForCountry(countryEntry);
if (structure == null)
{
throw new UnsupportedCountryException("IBAN contains not supported country code", countryCode);
}
}
private static bool hasValidCountryCode(string iban, out IbanFormatViolation validationResult)
{
validationResult = IbanFormatViolation.NO_VIOLATION;
if (iban.Length < Consts.IBAN_COUNTRY_CODE_LENGTH)
{
validationResult = IbanFormatViolation.COUNTRY_CODE_TWO_LETTERS;
}
else
{
string countryCode = GetCountryCode(iban);
if (!countryCode.Equals(countryCode.ToUpper()) || !char.IsLetter(iban[0]) || !char.IsLetter(iban[1]))
{
validationResult = IbanFormatViolation.COUNTRY_CODE_UPPER_CASE_LETTERS;
}
else
{
CountryCodeEntry countryEntry = CountryCode.GetCountryCode(countryCode);
if (countryEntry == null)
{
validationResult = IbanFormatViolation.COUNTRY_CODE_EXISTS;
}
else
{
BBanStructure structure = Bban.GetStructureForCountry(countryEntry);
if (structure == null)
{
validationResult = IbanFormatViolation.COUNTRY_CODE_UNSUPPORTED;
}
}
}
}
return(validationResult == IbanFormatViolation.NO_VIOLATION);
}
/// <summary>
/// Format BBAN string
/// </summary>
/// <returns>BBAN string</returns>
private string formatBban()
{
StringBuilder sb = new StringBuilder();
BBanStructure bbanStructure = Bban.GetStructureForCountry(_countryCodeEntry);
if (bbanStructure == null)
{
throw new UnsupportedCountryException("Country code is not supported", _countryCodeEntry.Alpha2);
}
foreach (BBanEntry entry in bbanStructure.Entries)
{
switch (entry.EntryType)
{
case BBanEntryType.BANK_CODE:
reformatBankCode(entry.Length);
sb.Append(_bankCode);
break;
case BBanEntryType.BRANCH_CODE:
sb.Append(_branchCode);
break;
case BBanEntryType.BALANCE_ACCOUNT_NUMBER:
sb.Append(_balanceAccountNumber);
break;
case BBanEntryType.ACCOUNT_NUMBER_PREFIX:
reformatAccountNumberPrefix(entry.Length);
sb.Append(_accountNumberPrefix);
break;
case BBanEntryType.ACCOUNT_NUMBER:
reformatAccountNumber(entry.Length);
sb.Append(_accountNumber);
break;
case BBanEntryType.NATIONAL_CHECK_DIGIT:
sb.Append(_nationalCheckDigit);
break;
case BBanEntryType.ACCOUNT_TYPE:
sb.Append(_accountType);
break;
case BBanEntryType.OWNER_ACCOUNT_NUMBER:
sb.Append(_ownerAccountType);
break;
case BBanEntryType.IDENTIFICATION_NUMBER:
sb.Append(_identificationNumber);
break;
}
}
return(sb.ToString());
}
/// <summary>
/// Checks if specified BBAN entry is supported for given country code.
/// </summary>
/// <param name="alpha2Code">Alpha2 Country code</param>
/// <param name="entryType">BBAN entry type</param>
/// <returns>True if given country contains rule for specified entry</returns>
public static bool IsBbanEntrySupported(string alpha2Code, BBanEntryType entryType)
{
Bban bban = new Bban();
BBanStructure structure = GetStructureForCountry(alpha2Code);
bool result = false;
if (structure != null)
{
result = structure.Entries.Any(x => x.EntryType == entryType);
}
return(result);
}
/// <summary>
/// Search for BBAN structure of specified country
/// </summary>
/// <param name="alpha2Code">Alpha2 Country code</param>
/// <returns>BBAN structure of defined country, or null if given country code is unsupported</returns>
public static BBanStructure GetStructureForCountry(string alpha2Code)
{
Bban bban = new Bban();
BBanStructure result = null;
if (!string.IsNullOrEmpty(alpha2Code) && alpha2Code.Length == 2)
{
if (bban._bbanStructures != null)
{
if (bban._bbanStructures.ContainsKey(alpha2Code.ToUpper()))
{
result = bban._bbanStructures[alpha2Code];
}
}
}
return(result);
}
/// <summary>
/// Search for BBAN structure of specified country
/// </summary>
/// <param name="countryCode">Country code object</param>
/// <returns>BBAN structure of defined country, or null if given country code is unsupported</returns>
public static BBanStructure GetStructureForCountry(CountryCodeEntry countryCode)
{
Bban bban = new Bban();
BBanStructure result = null;
if (countryCode != null)
{
if (bban._bbanStructures != null)
{
if (bban._bbanStructures.ContainsKey(countryCode.Alpha2))
{
result = bban._bbanStructures[countryCode.Alpha2];
}
}
}
return(result);
}
private static BBanStructure getBbanStructure(CountryCodeEntry countryCode) => Bban.GetStructureForCountry(countryCode);
/// <summary> /// Checks whether country is supported. /// It is checked by trying to find the country code in defined BBAN structures. /// </summary> /// <param name="alpha2Code">Alpha2 code for country</param> /// <returns>True if country code is supported, othewise false</returns> public static bool IsSupportedCountry(string alpha2Code) => (CountryCode.GetCountryCode(alpha2Code) != null) && (Bban.GetStructureForCountry(alpha2Code) != null);
/// <summary> /// Checks whether country is supported. /// It is checked by trying to find the country code in defined BBAN structures. /// </summary> /// <param name="countryCode">Country code object</param> /// <returns>True if country code is supported, othewise false</returns> public static bool IsSupportedCountry(CountryCodeEntry countryCode) => (CountryCode.GetCountryCode(countryCode?.Alpha2) != null) && (Bban.GetStructureForCountry(countryCode) != null);