private static void AssignDescriptionSubField(SwiftTransaction transaction, string value, ref string lastSubfield)
{
string pattern = $@"^((?<designator>EREF|KREF|MREF|BREF|RREF|CRED|DEBT|COAM|OAMT|SVWZ|ABWA|ABWE|IBAN|BIC)\+)(?<content>.+)";
Match result = Regex.Match(value, pattern);
if (result.Success)
{
if (SetDescriptionSubField(result.Groups["designator"].Value, transaction, result.Groups["content"].Value))
{
lastSubfield = result.Groups["designator"].Value;
}
else
{
lastSubfield = string.Empty;
}
}
else if (!string.IsNullOrEmpty(lastSubfield))
{
SetDescriptionSubField(lastSubfield, transaction, value);
}
}
private static bool SetDescriptionSubField(string designator, SwiftTransaction transaction, string value)
{
switch (designator)
{
case "ABWA": transaction.ABWA += value; break;
case "EREF": transaction.EREF += value; break;
case "KREF": transaction.KREF += value; break;
case "MREF": transaction.MREF += value; break;
case "BREF": transaction.BREF += value; break;
case "RREF": transaction.RREF += value; break;
case "CRED": transaction.CRED += value; break;
case "DEBT": transaction.DEBT += value; break;
case "COAM": transaction.COAM += value; break;
case "OAMT": transaction.OAMT += value; break;
case "SVWZ": transaction.SVWZ += value; break;
case "ABWE": transaction.ABWE += value; break;
case "IBAN": transaction.IBAN += value; break;
case "BIC": transaction.BIC += value; break;
default:
//something is wrong here
return(false);
}
return(true);
}
private static void Data(string swiftTag, string swiftData)
{
if (SWIFTStatement != null)
{
SWIFTStatement.Lines.Add(new SwiftLine(swiftTag, swiftData));
}
if (swiftTag == "OS")
{
// Ignore
}
else if (swiftTag == "20")
{
// 20 is used for each "page" of the SWIFTStatement; but we want to put all SWIFTTransactions together
// the whole SWIFTStatement closes with 62F
if (SWIFTStatement == null)
{
SWIFTStatement = new SwiftStatement()
{
Type = swiftData
};
SWIFTStatement.Lines.Add(new SwiftLine(swiftTag, swiftData));
}
}
else if (swiftTag == "25")
{
int posSlash = swiftData.IndexOf("/");
if (posSlash >= 0)
{
SWIFTStatement.BankCode = swiftData.Substring(0, posSlash);
if (posSlash < swiftData.Length)
{
SWIFTStatement.AccountCode = LTrim(swiftData.Substring(posSlash + 1));
}
}
}
else if (swiftTag.StartsWith("60")) // Anfangssaldo
{
// 60M is the start balance on each page of the SWIFTStatement.
// 60F is the start balance of the whole SWIFTStatement.
// First character is D or C
int DebitCreditIndicator = (swiftData[0] == 'D' ? -1 : +1);
// Next 6 characters: YYMMDD
swiftData = swiftData.Substring(1);
// Start date YYMMDD
DateTime postingDate = new DateTime(2000 + Convert.ToInt32(swiftData.Substring(0, 2)),
Convert.ToInt32(swiftData.Substring(2, 2)),
Convert.ToInt32(swiftData.Substring(4, 2)));
// Next 3 characters: Currency
// Last characters: Balance with comma for decimal point
SWIFTStatement.Currency = swiftData.Substring(6, 3);
try
{
decimal balance = DebitCreditIndicator * Convert.ToDecimal(swiftData.Substring(9).Replace(",",
Thread.CurrentThread.CurrentCulture.NumberFormat.CurrencyDecimalSeparator));
// Use first start balance. If missing, use intermediate balance.
if (swiftTag == "60F" || SWIFTStatement.StartBalance == 0 && swiftTag == "60M")
{
SWIFTStatement.StartBalance = balance;
SWIFTStatement.EndBalance = balance;
}
}
catch (FormatException)
{
Log.Write($"Invalid balance: {swiftData}");
}
if (swiftTag == "60F" || swiftTag == "60M")
{
SWIFTStatement.StartDate = postingDate;
}
}
else if (swiftTag == "28C")
{
// this contains the number of the SWIFTStatement and the number of the page
// only use for first page
if (SWIFTStatement.SwiftTransactions.Count == 0)
{
if (swiftData.IndexOf("/") != -1)
{
SWIFTStatement.Id = swiftData.Substring(0, swiftData.IndexOf("/"));
}
else
{
// Realtime SWIFTStatement.
// Not use SWIFTStatement number 0, because Sparkasse has 0/1 for valid SWIFTStatements
SWIFTStatement.Id = string.Empty;
}
}
}
else if (swiftTag == "61")
{
// If there is no SWIFTStatement available, create one
if (SWIFTStatement == null)
{
SWIFTStatement = new SwiftStatement();
SWIFTStatement.Lines.Add(new SwiftLine(swiftTag, swiftData));
}
SwiftTransaction SWIFTTransaction = new SwiftTransaction();
SWIFTStatement.SwiftTransactions.Add(SWIFTTransaction);
// Valuta date (YYMMDD)
try
{
SWIFTTransaction.ValueDate = new DateTime(2000 + Convert.ToInt32(swiftData.Substring(0, 2)),
Convert.ToInt32(swiftData.Substring(2, 2)),
Convert.ToInt32(swiftData.Substring(4, 2)));
}
catch (ArgumentOutOfRangeException)
{
// we have had the situation in the bank file with a date 30 Feb 2010.
// probably because the instruction by the donor is to transfer the money on the 30 day each month
// use the last day of the month
int year = 2000 + Convert.ToInt32(swiftData.Substring(0, 2));
int month = Convert.ToInt32(swiftData.Substring(2, 2));
int day = DateTime.DaysInMonth(year, month);
SWIFTTransaction.ValueDate = new DateTime(year, month, day);
}
swiftData = swiftData.Substring(6);
// Optional: Posting date (MMDD)
if (Regex.IsMatch(swiftData, @"^\d{4}"))
{
int year = SWIFTTransaction.ValueDate.Year;
int month = Convert.ToInt32(swiftData.Substring(0, 2));
int day = Convert.ToInt32(swiftData.Substring(2, 2));
// Posting date 30 Dec 2020, Valuta date 1 Jan 2020
if (month > SWIFTTransaction.ValueDate.Month && month == SWIFTTransaction.ValueDate.AddMonths(-1).Month)
{
year--;
}
// Posting date 1 Jan 2020, Valuta date 30 Dec 2020
else if (month < SWIFTTransaction.ValueDate.Month && month == SWIFTTransaction.ValueDate.AddMonths(1).Month)
{
year++;
}
SWIFTTransaction.InputDate = new DateTime(year, month, day);
swiftData = swiftData.Length > 4 ? swiftData.Substring(4) : string.Empty;
}
// Amount - some characters followed by an 'N'
if (Regex.IsMatch(swiftData, @"^.+N"))
{
// Debit or credit, or storno debit or credit
int debitCreditIndicator = 0;
if (swiftData[0] == 'R')
{
// Storno means: reverse the debit credit flag
debitCreditIndicator = (swiftData[1] == 'D' ? 1 : -1);
swiftData = swiftData.Substring(2);
}
else
{
debitCreditIndicator = (swiftData[0] == 'D' ? -1 : 1);
swiftData = swiftData.Substring(1);
}
// Sometimes there is something about currency
if (char.IsLetter(swiftData[0]))
{
// Just skip it for the moment
swiftData = swiftData.Substring(1);
}
// The amount, finishing with N
SWIFTTransaction.Amount =
debitCreditIndicator * Convert.ToDecimal(swiftData.Substring(0, swiftData.IndexOf("N")).Replace(",",
Thread.CurrentThread.CurrentCulture.NumberFormat.CurrencyDecimalSeparator));
SWIFTStatement.EndBalance += SWIFTTransaction.Amount;
var constIdx = swiftData.IndexOf("N");
swiftData = swiftData.Length > constIdx?swiftData.Substring(constIdx) : string.Empty;
}
else
{
return;
}
// Buchungsschlüssel
if (Regex.IsMatch(swiftData, @"^N[A-Z0-9]{3}"))
{
SWIFTTransaction.TransactionTypeId = swiftData.Substring(0, 4);
swiftData = swiftData.Length > 4 ? swiftData.Substring(4) : string.Empty;
}
else
{
return;
}
// customer reference
if (Regex.IsMatch(swiftData, @"^.+"))
{
int idxDelimiter = swiftData.IndexOf("//");
if (idxDelimiter > 0)
{
SWIFTTransaction.CustomerReference = swiftData.Substring(0, idxDelimiter);
}
else
{
SWIFTTransaction.CustomerReference = swiftData;
}
if (idxDelimiter > 0)
{
swiftData = swiftData.Length > idxDelimiter + 2 ? swiftData.Substring(idxDelimiter + 2) : string.Empty;
}
else
{
swiftData = string.Empty;
}
}
else
{
return;
}
// Optional: bank reference; ends with CR/LF if followed by other data
if (Regex.IsMatch(swiftData, @"^.+?\r\n", RegexOptions.Singleline))
{
int lineBreakIdx = swiftData.IndexOf("\r\n");
if (lineBreakIdx > 0)
{
SWIFTTransaction.BankReference = swiftData.Substring(0, lineBreakIdx);
swiftData = swiftData.Substring(lineBreakIdx + 2);
}
else
{
SWIFTTransaction.BankReference = swiftData;
swiftData = string.Empty;
}
}
// Optional: other data
if (!string.IsNullOrWhiteSpace(swiftData))
{
SWIFTTransaction.OtherInformation = swiftData;
}
}
else if (swiftTag == "86")
{
// Remove line breaks
swiftData = swiftData.Replace("\r\n", string.Empty);
SwiftTransaction SWIFTTransaction = SWIFTStatement.SwiftTransactions[SWIFTStatement.SwiftTransactions.Count - 1];
// Geschaeftsvorfallcode
SWIFTTransaction.TypeCode = swiftData.Substring(0, 3);
swiftData = swiftData.Substring(3);
if (swiftData.Length == 0)
{
return;
}
char separator = swiftData[0];
swiftData = swiftData.Substring(1);
string[] elements = swiftData.Split(new char[] { separator });
string lastDescriptionSubfield = string.Empty;
foreach (string element in elements)
{
int key = 0;
string value = element;
try
{
key = Convert.ToInt32(element.Substring(0, 2));
value = element.Substring(2);
}
catch
{
// If there is a question mark in the description, then we get here
}
if (key == 0)
{
// Buchungstext
SWIFTTransaction.Text = value;
}
else if (key == 10)
{
// Primanotennummer
SWIFTTransaction.Primanota = value;
}
else if ((key >= 11) && (key <= 19))
{
// Ignore
// Unknown meaning
}
else if ((key >= 20) && (key <= 29))
{
// No space between description lines
if (value.EndsWith(" "))
{
SWIFTTransaction.Description += value;
}
else
{
SWIFTTransaction.Description += value + " ";
}
AssignDescriptionSubField(SWIFTTransaction, value, ref lastDescriptionSubfield);
}
else if (key == 30)
{
SWIFTTransaction.BankCode = value;
}
else if (key == 31)
{
SWIFTTransaction.AccountCode = value;
}
else if ((key == 32) || (key == 33))
{
SWIFTTransaction.PartnerName += value;
}
else if (key == 34)
{
// Textschlüsselergänzung
SWIFTTransaction.TextKeyAddition = value;
}
else if ((key == 35) || (key == 36))
{
// Empfängername
SWIFTTransaction.Description += value;
}
else if ((key >= 60) && (key <= 63))
{
SWIFTTransaction.Description += value;
AssignDescriptionSubField(SWIFTTransaction, value, ref lastDescriptionSubfield);
}
else
{
// Unknown key
return;
}
}
}
else if (swiftTag.StartsWith("62")) // Schlusssaldo
{
// 62M: Finish page
// 62F: Finish SWIFTStatement
int debitCreditIndicator = (swiftData[0] == 'D' ? -1 : 1);
swiftData = swiftData.Substring(1);
// Posting date YYMMDD
DateTime postingDate = new DateTime(2000 + Convert.ToInt32(swiftData.Substring(0, 2)),
Convert.ToInt32(swiftData.Substring(2, 2)),
Convert.ToInt32(swiftData.Substring(4, 2)));
swiftData = swiftData.Substring(6);
// Currency
if (swiftData.Length > 3) // Assure that currency and end balance are valid
{
swiftData = swiftData.Substring(3);
// Sometimes, this line is the last line, and it has -NULNULNUL at the end
if (swiftData.Contains("-\0"))
{
swiftData = swiftData.Substring(0, swiftData.IndexOf("-\0"));
}
// End balance
decimal endBalance = debitCreditIndicator * Convert.ToDecimal(swiftData.Replace(",",
Thread.CurrentThread.CurrentCulture.NumberFormat.CurrencyDecimalSeparator));
SWIFTStatement.EndBalance = endBalance;
}
if (swiftTag == "62F" || swiftTag == "62M")
{
SWIFTStatement.EndDate = postingDate;
SWIFTStatements.Add(SWIFTStatement);
// Process missing input dates
foreach (var tx in SWIFTStatement.SwiftTransactions)
{
if (tx.InputDate == default)
{
tx.InputDate = SWIFTStatement.EndDate;
}
}
SWIFTStatement = null;
}
}
else if (swiftTag == "64")
{
// Valutensaldo
}
else if (swiftTag == "65")
{
// Future valutensaldo
}
// Begin MT942
else if (swiftTag == "34F")
{
if (swiftData.Length >= 3)
{
SWIFTStatement.Currency = swiftData.Substring(0, 3);
swiftData = swiftData.Length > 3 ? swiftData.Substring(3) : string.Empty;
}
// Kleinster Betrag der gemeldeten Umsätze
if (Regex.IsMatch(swiftData, @"D?\d+,\d*"))
{
bool debit = swiftData.Substring(0, 1) == "D";
decimal amount = 0;
if (debit)
{
decimal.TryParse(swiftData.Substring(1), out amount);
amount = amount * -1;
}
else
{
decimal.TryParse(swiftData, out amount);
}
SWIFTStatement.SmallestAmount = amount;
}
// Kleinster Betrag der gemeldeten Haben-Umsätze
else if (Regex.IsMatch(swiftData, @"C\d+,\d*"))
{
decimal.TryParse(swiftData.Substring(1), out decimal amount);
SWIFTStatement.SmallestCreditAmount = amount;
}
}
else if (swiftTag == "13") // Deutsche Bank
{
if (Regex.IsMatch(swiftData, @"\d{10}"))
{
DateTime.TryParseExact(swiftData, "yyMMddHHmm", CultureInfo.InvariantCulture, DateTimeStyles.None, out DateTime creationDate);
SWIFTStatement.CreationDate = creationDate;
}
}
else if (swiftTag == "13D")
{
if (Regex.IsMatch(swiftData, @"\d{10}(\+|-)\d{4}"))
{
// Easier parsing
// 1912090901+0100 -> 1912090901+01:00
var dateStr = swiftData.Substring(0, 13) + ":" + swiftData.Substring(13, 2);
DateTimeOffset.TryParseExact(dateStr, "yyMMddHHmmzzz", CultureInfo.InvariantCulture, DateTimeStyles.None, out DateTimeOffset dateTimeOffset);
SWIFTStatement.CreationDate = dateTimeOffset.DateTime;
}
else
{
DateTime.TryParseExact(swiftData, "yyMMdd", CultureInfo.InvariantCulture, DateTimeStyles.None, out DateTime creationDate);
SWIFTStatement.CreationDate = creationDate;
}
}
else if (swiftTag == "90D" || swiftTag == "90C")
{
bool debit = swiftTag == "90D";
bool previousTag90d = !debit && SWIFTStatement == null; // Previous tag has been 90D
if (previousTag90d)
{
SWIFTStatement = SWIFTStatements.LastOrDefault();
}
if (SWIFTStatement == null)
{
return;
}
int count = 0;
decimal amount = 0;
string currency = null;
var match = Regex.Match(swiftData, @"(\d+)([A-Z]{3})(\d+(,\d+)?)");
if (match.Success)
{
int.TryParse(match.Groups[1].Value, out count);
currency = match.Groups[2].Value;
decimal.TryParse(match.Groups[3].Value, NumberStyles.Number | NumberStyles.AllowDecimalPoint, CultureInfo.GetCultureInfo("de-DE"), out amount);
}
if (SWIFTStatement.Currency == null)
{
SWIFTStatement.Currency = currency;
}
if (debit)
{
SWIFTStatement.CountDebit = count;
SWIFTStatement.AmountDebit = amount * -1;
}
else
{
SWIFTStatement.CountCredit = count;
SWIFTStatement.AmountCredit = amount;
}
if (debit)
{
SWIFTStatements.Add(SWIFTStatement);
SWIFTStatement = null;
}
else
{
if (!previousTag90d)
{
SWIFTStatements.Add(SWIFTStatement);
}
SWIFTStatement = null;
}
}
// End MT942
else
{
// Unknown tag
return;
}
}
