private static void parseExpiryDate(String expiryDate, ref RecognitionResult result)
{
try
{
if ("<<<<<<".Equals(expiryDate))
{
result.DoesNotExpire = true;
}
else
{
result.expiryYear = 2000 + int.Parse(expiryDate.Substr(0, 2));
result.expiryMonth = int.Parse(expiryDate.Substr(2, 4));
result.expiryDay = int.Parse(expiryDate.Substring(4));
}
}
catch (Exception ignore)
{
}
}
private RecognitionResult ParseMrz(string mrz)
{
String[] mrzLines = mrz.Split('\n');
RecognitionResult result = new RecognitionResult();
if (mrzLines.Length >= 2 && mrzLines[0].Length >= 30 && mrzLines[1].Length == mrzLines[0].Length)
{
result.Raw = string.Join("\n", mrzLines);
//Dictionary<String, String> countries = getCountriesMap();
char type = mrzLines[0][0];
if (type == 'P')
{ // passport
result.Type = RecognitionResult.TYPE_PASSPORT;
if (mrzLines[0].Length == 44)
{
result.IssuingCountry = mrzLines[0].Substr(2, 5);
int lastNameEnd = mrzLines[0].IndexOf("<<", 6);
if (lastNameEnd != -1)
{
result.LastName = mrzLines[0].Substr(5, lastNameEnd).Replace('<', ' ').Replace('0', 'O').Trim();
result.FirstName = mrzLines[0].Substring(lastNameEnd + 2).Replace('<', ' ').Replace('0', 'O').Trim();
if (result.FirstName.Contains(" "))
{
result.FirstName = result.FirstName.Substr(0, result.FirstName.IndexOf(" "));
}
}
String number = mrzLines[1].Substr(0, 9).Replace('<', ' ').Replace('O', '0').Trim();
int numberChecksum = checksum(number);
if (numberChecksum == getNumber(mrzLines[1][9]))
{
result.Number = number;
}
result.Nationality = mrzLines[1].Substr(10, 13);
String birthDate = mrzLines[1].Substr(13, 19).Replace('O', '0').Replace('I', '1');
int birthDateChecksum = checksum(birthDate);
if (birthDateChecksum == getNumber(mrzLines[1][19]))
{
parseBirthDate(birthDate, ref result);
}
result.Gender = parseGender(mrzLines[1][20]);
String expiryDate = mrzLines[1].Substr(21, 27).Replace('O', '0').Replace('I', '1');
int expiryDateChecksum = checksum(expiryDate);
if (expiryDateChecksum == getNumber(mrzLines[1][27]) || mrzLines[1][27] == '<')
{
parseExpiryDate(expiryDate, ref result);
}
// Russian internal passports use transliteration for the name and have a number one digit longer than fits into the standard MRZ format
if ("RUS".Equals(result.IssuingCountry) && mrzLines[0][1] == 'N')
{
result.Type = RecognitionResult.TYPE_INTERNAL_PASSPORT;
String[] names = result.FirstName.Split(' ');
result.FirstName = cyrillicToLatin(russianPassportTranslit(names[0]));
if (names.Length > 1)
result.MiddleName = cyrillicToLatin(russianPassportTranslit(names[1]));
result.LastName = cyrillicToLatin(russianPassportTranslit(result.LastName));
if (result.Number != null)
result.Number = result.Number.Substr(0, 3) + mrzLines[1][28] + result.Number.Substring(3);
}
else
{
result.FirstName = result.FirstName.Replace('8', 'B');
result.LastName = result.LastName.Replace('8', 'B');
}
result.LastName = capitalize(result.LastName);
result.FirstName = capitalize(result.FirstName);
result.MiddleName = capitalize(result.MiddleName);
}
}
else if (type == 'I' || type == 'A' || type == 'C')
{ // id
result.Type = RecognitionResult.TYPE_ID;
if (mrzLines.Length == 3 && mrzLines[0].Length == 30 && mrzLines[2].Length == 30)
{
result.IssuingCountry = mrzLines[0].Substr(2, 5);
String number = mrzLines[0].Substr(5, 14).Replace('<', ' ').Replace('O', '0').Trim();
int numberChecksum = checksum(number);
if (numberChecksum == mrzLines[0][14] - '0')
{
result.Number = number;
}
String birthDate = mrzLines[1].Substr(0, 6).Replace('O', '0').Replace('I', '1');
int birthDateChecksum = checksum(birthDate);
if (birthDateChecksum == getNumber(mrzLines[1][6]))
{
parseBirthDate(birthDate, ref result);
}
result.Gender = parseGender(mrzLines[1][7]);
String expiryDate = mrzLines[1].Substr(8, 14).Replace('O', '0').Replace('I', '1');
int expiryDateChecksum = checksum(expiryDate);
if (expiryDateChecksum == getNumber(mrzLines[1][14]) || mrzLines[1][14] == '<')
{
parseExpiryDate(expiryDate, ref result);
}
result.Nationality = mrzLines[1].Substr(15, 18);
int lastNameEnd = mrzLines[2].IndexOf("<<");
if (lastNameEnd != -1)
{
result.LastName = mrzLines[2].Substr(0, lastNameEnd).Replace('<', ' ').Trim();
result.FirstName = mrzLines[2].Substring(lastNameEnd + 2).Replace('<', ' ').Trim();
}
}
else if (mrzLines.Length == 2 && mrzLines[0].Length == 36)
{
result.IssuingCountry = mrzLines[0].Substr(2, 5);
if ("FRA".Equals(result.IssuingCountry) && type == 'I' && mrzLines[0][1] == 'D')
{ // French IDs use an entirely different format
result.Nationality = "FRA";
result.LastName = mrzLines[0].Substr(5, 30).Replace('<', ' ').Trim();
result.FirstName = mrzLines[1].Substr(13, 27).Replace("<<", ", ").Replace('<', ' ').Trim();
String number = mrzLines[1].Substr(0, 12).Replace('O', '0');
if (checksum(number) == getNumber(mrzLines[1][12]))
{
result.Number = number;
}
String birthDate = mrzLines[1].Substr(27, 33).Replace('O', '0').Replace('I', '1');
if (checksum(birthDate) == getNumber(mrzLines[1][33]))
{
parseBirthDate(birthDate, ref result);
}
result.Gender = parseGender(mrzLines[1][34]);
result.DoesNotExpire = true;
}
else
{
int lastNameEnd = mrzLines[0].IndexOf("<<");
if (lastNameEnd != -1)
{
result.LastName = mrzLines[0].Substr(5, lastNameEnd).Replace('<', ' ').Trim();
result.FirstName = mrzLines[0].Substring(lastNameEnd + 2).Replace('<', ' ').Trim();
}
String number = mrzLines[1].Substr(0, 9).Replace('<', ' ').Replace('O', '0').Trim();
int numberChecksum = checksum(number);
if (numberChecksum == getNumber(mrzLines[1][9]))
{
result.Number = number;
}
result.Nationality = mrzLines[1].Substr(10, 13);
String birthDate = mrzLines[1].Substr(13, 19).Replace('O', '0').Replace('I', '1');
if (checksum(birthDate) == getNumber(mrzLines[1][19]))
{
parseBirthDate(birthDate, ref result);
}
result.Gender = parseGender(mrzLines[1][20]);
String expiryDate = mrzLines[1].Substr(21, 27).Replace('O', '0').Replace('I', '1');
if (checksum(expiryDate) == getNumber(mrzLines[1][27]) || mrzLines[1][27] == '<')
{
parseExpiryDate(expiryDate, ref result);
}
}
}
result.FirstName = capitalize(result.FirstName.Replace('0', 'O').Replace('8', 'B'));
result.LastName = capitalize(result.LastName.Replace('0', 'O').Replace('8', 'B'));
}
else
{
return null;
}
if (string.IsNullOrEmpty(result.FirstName) && string.IsNullOrEmpty(result.LastName))
return null;
//result.IssuingCountry = countries.get(result.IssuingCountry);
//result.Nationality = countries.get(result.Nationality);
return result;
}
return null;
}
