/// <summary>
/// Encode the raw data using the EAN-8 algorithm.
/// </summary>
private string Encode_EAN8()
{
//check length
if (Raw_Data.Length != 8 && Raw_Data.Length != 7)
{
throw new Exception("EEAN8-1: Invalid data length. (7 or 8 numbers only)");
}
//check numeric only
if (!Barcode.CheckNumericOnly(Raw_Data))
{
throw new Exception("EEAN8-2: Numeric only.");
}
//encode the data
var result = "101";
//first half (Encoded using left hand / odd parity)
for (var i = 0; i < Raw_Data.Length / 2; i++)
{
result += EAN_CodeA[int.Parse(Raw_Data[i].ToString())];
}
//center guard bars
result += "01010";
//second half (Encoded using right hand / even parity)
for (var i = Raw_Data.Length / 2; i < Raw_Data.Length; i++)
{
result += EAN_CodeC[int.Parse(Raw_Data[i].ToString())];
}
result += "101";
return(result);
}
/// <summary>
/// Encode the raw data using the UPC-A algorithm.
/// </summary>
private string Encode_UPCA()
{
//check length of input
if (Raw_Data.Length != 12)
{
throw new Exception("EUPCA-1: Data length invalid. (Length must be 12)");
}
if (!Barcode.CheckNumericOnly(Raw_Data))
{
throw new Exception("EUPCA-2: Numeric Data Only");
}
var result = "101"; //start with guard bars
var patterncode = UPC_Pattern[int.Parse(Raw_Data[0].ToString())];
//first number
result += UPC_CodeA[int.Parse(Raw_Data[0].ToString())];
//second (group) of numbers
var pos = 0;
while (pos < 5)
{
if (patterncode[pos + 1] == 'a')
{
result += UPC_CodeA[int.Parse(Raw_Data[pos + 1].ToString())];
}
if (patterncode[pos + 1] == 'b')
{
result += UPC_CodeB[int.Parse(Raw_Data[pos + 1].ToString())];
}
pos++;
}
//add divider bars
result += "01010";
//third (group) of numbers
pos = 0;
while (pos < 5)
{
result += UPC_CodeC[int.Parse(Raw_Data[pos++ + 6].ToString())];
}
//forth
result += UPC_CodeC[int.Parse(Raw_Data[Raw_Data.Length - 1].ToString())];
//add ending guard bars
result += "101";
//get the manufacturer assigning country
init_CountryCodes();
var twodigitCode = "0" + Raw_Data.Substring(0, 1);
try
{
_Country_Assigning_Manufacturer_Code = CountryCodes[twodigitCode].ToString();
}
catch
{
throw new Exception("EUPCA-3: Country assigning manufacturer code not found.");
}
finally
{
CountryCodes.Clear();
}
return(result);
}
/// <summary>
/// Encode the raw data using the UPC Supplemental 5-digit algorithm.
/// </summary>
private string Encode_UPCSupplemental_5()
{
if (Raw_Data.Length != 5)
{
throw new Exception("EUPC-SUP5-1: Invalid data length. (Length = 5 required).");
}
if (!Barcode.CheckNumericOnly(Raw_Data))
{
throw new Exception("EUPCA-2: Numeric Data Only");
}
//calculate the checksum digit
var even = 0;
var odd = 0;
//odd
for (var i = 0; i <= 4; i += 2)
{
odd += int.Parse(Raw_Data.Substring(i, 1)) * 3;
}
//even
for (var i = 1; i < 4; i += 2)
{
even += int.Parse(Raw_Data.Substring(i, 1)) * 9;
}
var total = even + odd;
var cs = total % 10;
var pattern = UPC_SUPP_5[cs];
var result = string.Empty;
var pos = 0;
foreach (var c in pattern)
{
//Inter-character separator
if (pos == 0)
{
result += "1011";
}
else
{
result += "01";
}
if (c == 'a')
{
//encode using odd parity
result += EAN_CodeA[int.Parse(Raw_Data[pos].ToString())];
}
else if (c == 'b')
{
//encode using even parity
result += EAN_CodeB[int.Parse(Raw_Data[pos].ToString())];
}
pos++;
}
return(result);
}
/// <summary>
/// Encode the raw data using the Code 11 algorithm.
/// </summary>
private string Encode_Code11()
{
if (!Barcode.CheckNumericOnly(Raw_Data.Replace("-", string.Empty)))
{
throw new Exception("EC11-1: Numeric data and '-' Only");
}
//calculate the checksums
var weight = 1;
var CTotal = 0;
var Data_To_Encode_with_Checksums = Raw_Data;
//figure the C checksum
for (var i = Raw_Data.Length - 1; i >= 0; i--)
{
//C checksum weights go 1-10
if (weight == 10)
{
weight = 1;
}
if (Raw_Data[i] != '-')
{
CTotal += int.Parse(Raw_Data[i].ToString()) * weight++;
}
else
{
CTotal += 10 * weight++;
}
}
var checksumC = CTotal % 11;
Data_To_Encode_with_Checksums += checksumC.ToString();
//K checksums are recommended on any message length greater than or equal to 10
if (Raw_Data.Length >= 1)
{
weight = 1;
var KTotal = 0;
//calculate K checksum
for (var i = Data_To_Encode_with_Checksums.Length - 1; i >= 0; i--)
{
//K checksum weights go 1-9
if (weight == 9)
{
weight = 1;
}
if (Data_To_Encode_with_Checksums[i] != '-')
{
KTotal += int.Parse(Data_To_Encode_with_Checksums[i].ToString()) * weight++;
}
else
{
KTotal += 10 * weight++;
}
}
var checksumK = KTotal % 11;
Data_To_Encode_with_Checksums += checksumK.ToString();
}
//encode data
var space = "0";
var result = C11_Code[11] + space; //start-stop char + interchar space
foreach (var c in Data_To_Encode_with_Checksums)
{
var index = c == '-' ? 10 : int.Parse(c.ToString());
result += C11_Code[index];
//inter-character space
result += space;
}
//stop bars
result += C11_Code[11];
return(result);
}
/// <summary>
/// Encode the raw data using the UPC-E algorithm.
/// </summary>
private string Encode_UPCE()
{
if (Raw_Data.Length != 6 && Raw_Data.Length != 8 && Raw_Data.Length != 12)
{
throw new Exception("EUPCE-1: Invalid data length. (8 or 12 numbers only)");
}
if (!Barcode.CheckNumericOnly(Raw_Data))
{
throw new Exception("EUPCE-2: Numeric only.");
}
var CheckDigit = int.Parse(Raw_Data[Raw_Data.Length - 1].ToString());
var NumberSystem = int.Parse(Raw_Data[0].ToString());
//Convert to UPC-E from UPC-A if necessary
if (Raw_Data.Length == 12)
{
var UPCECode = string.Empty;
//break apart into components
var Manufacturer = Raw_Data.Substring(1, 5);
var ProductCode = Raw_Data.Substring(6, 5);
//check for a valid number system
if (NumberSystem != 0 && NumberSystem != 1)
{
throw new Exception("EUPCE-3: Invalid Number System (only 0 & 1 are valid)");
}
if (Manufacturer.EndsWith("000") || Manufacturer.EndsWith("100") ||
Manufacturer.EndsWith("200") && int.Parse(ProductCode) <= 999)
{
//rule 1
UPCECode += Manufacturer.Substring(0, 2); //first two of manufacturer
UPCECode += ProductCode.Substring(2, 3); //last three of product
UPCECode += Manufacturer[2].ToString(); //third of manufacturer
}
else if (Manufacturer.EndsWith("00") && int.Parse(ProductCode) <= 99)
{
//rule 2
UPCECode += Manufacturer.Substring(0, 3); //first three of manufacturer
UPCECode += ProductCode.Substring(3, 2); //last two of product
UPCECode += "3"; //number 3
}
else if (Manufacturer.EndsWith("0") && int.Parse(ProductCode) <= 9)
{
//rule 3
UPCECode += Manufacturer.Substring(0, 4); //first four of manufacturer
UPCECode += ProductCode[4]; //last digit of product
UPCECode += "4"; //number 4
}
else if (!Manufacturer.EndsWith("0") && int.Parse(ProductCode) <= 9 && int.Parse(ProductCode) >= 5)
{
//rule 4
UPCECode += Manufacturer; //manufacturer
UPCECode += ProductCode[4]; //last digit of product
}
else
{
throw new Exception("EUPCE-4: Illegal UPC-A entered for conversion. Unable to convert.");
}
Raw_Data = UPCECode;
}
//get encoding pattern
var pattern = string.Empty;
if (NumberSystem == 0)
{
pattern = UPCE_Code_0[CheckDigit];
}
else
{
pattern = UPCE_Code_1[CheckDigit];
}
//encode the data
var result = "101";
var pos = 0;
foreach (var c in pattern)
{
var i = int.Parse(Raw_Data[pos++].ToString());
if (c == 'a')
{
result += EAN_CodeA[i];
} //if
else if (c == 'b')
{
result += EAN_CodeB[i];
}
}
//guard bars
result += "01010";
//end bars
result += "1";
return(result);
}
/// <summary>
/// Encode the raw data using the Interleaved 2 of 5 algorithm.
/// </summary>
private string Encode_Interleaved2of5()
{
//check length of input
if (Raw_Data.Length % 2 != 0)
{
throw new Exception("EI25-1: Data length invalid.");
}
if (!Barcode.CheckNumericOnly(Raw_Data))
{
throw new Exception("EI25-2: Numeric Data Only");
}
var result = "1010";
for (var i = 0; i < Raw_Data.Length; i += 2)
{
var bars = true;
var patternbars = I25_Code[int.Parse(Raw_Data[i].ToString())];
var patternspaces = I25_Code[int.Parse(Raw_Data[i + 1].ToString())];
var patternmixed = string.Empty;
//interleave
while (patternbars.Length > 0)
{
patternmixed += patternbars[0] + patternspaces[0].ToString();
patternbars = patternbars.Substring(1);
patternspaces = patternspaces.Substring(1);
}
foreach (var c1 in patternmixed)
{
if (bars)
{
if (c1 == 'N')
{
result += "1";
}
else
{
result += "11";
}
}
else
{
if (c1 == 'N')
{
result += "0";
}
else
{
result += "00";
}
}
bars = !bars;
}
}
//add ending bars
result += "1101";
return(result);
}
/// <summary>
/// Encode the raw data using the EAN-13 algorithm. (Can include the checksum already. If it doesnt exist in the data
/// then it will calculate it for you. Accepted data lengths are 12 + 1 checksum or just the 12 data digits)
/// </summary>
private string Encode_EAN13()
{
//check length of input
if (Raw_Data.Length < 12 || Raw_Data.Length > 13)
{
throw new Exception("EEAN13-1: Data length invalid. (Length must be 12 or 13)");
}
if (!Barcode.CheckNumericOnly(Raw_Data))
{
throw new Exception("EEAN13-2: Numeric Data Only");
}
var patterncode = EAN_Pattern[int.Parse(Raw_Data[0].ToString())];
var result = "101";
var pos = 0;
while (pos < 6)
{
if (patterncode[pos] == 'a')
{
result += EAN_CodeA[int.Parse(Raw_Data[pos + 1].ToString())];
}
if (patterncode[pos] == 'b')
{
result += EAN_CodeB[int.Parse(Raw_Data[pos + 1].ToString())];
}
pos++;
}
//add divider bars
result += "01010";
//get the third
pos = 1;
while (pos <= 5)
{
result += EAN_CodeC[int.Parse(Raw_Data[pos++ + 6].ToString())];
}
//checksum digit
var cs = int.Parse(Raw_Data[Raw_Data.Length - 1].ToString());
//add checksum
result += EAN_CodeC[cs];
//add ending bars
result += "101";
//get the manufacturer assigning country
init_CountryCodes();
_Country_Assigning_Manufacturer_Code = "N/A";
var twodigitCode = Raw_Data.Substring(0, 2);
var threedigitCode = Raw_Data.Substring(0, 3);
try
{
_Country_Assigning_Manufacturer_Code = CountryCodes[threedigitCode].ToString();
}
catch
{
try
{
_Country_Assigning_Manufacturer_Code = CountryCodes[twodigitCode].ToString();
}
catch
{
throw new Exception("EEAN13-3: Country assigning manufacturer code not found.");
}
}
finally
{
CountryCodes.Clear();
}
return(result);
}
/// <summary>
/// Encode the raw data using the MSI algorithm.
/// </summary>
private string Encode_MSI()
{
//check for non-numeric chars
if (!Barcode.CheckNumericOnly(Raw_Data))
{
throw new Exception("EMSI-1: Numeric Data Only");
}
var PreEncoded = Raw_Data;
//get checksum
if (Encoded_Type == TYPE.MSI_Mod10 || Encoded_Type == TYPE.MSI_2Mod10)
{
var odds = string.Empty;
var evens = string.Empty;
for (var i = PreEncoded.Length - 1; i >= 0; i -= 2)
{
odds = PreEncoded[i] + odds;
if (i - 1 >= 0)
{
evens = PreEncoded[i - 1] + evens;
}
}
//multiply odds by 2
odds = Convert.ToString(int.Parse(odds) * 2);
var evensum = 0;
var oddsum = 0;
foreach (var c in evens)
{
evensum += int.Parse(c.ToString());
}
foreach (var c in odds)
{
oddsum += int.Parse(c.ToString());
}
var checksum = 10 - (oddsum + evensum) % 10;
PreEncoded += checksum.ToString();
}
if (Encoded_Type == TYPE.MSI_Mod11 || Encoded_Type == TYPE.MSI_Mod11_Mod10)
{
var sum = 0;
var weight = 2;
for (var i = PreEncoded.Length - 1; i >= 0; i--)
{
if (weight > 7)
{
weight = 2;
}
sum += int.Parse(PreEncoded[i].ToString()) * weight++;
}
var checksum = 11 - sum % 11;
PreEncoded += checksum.ToString();
}
if (Encoded_Type == TYPE.MSI_2Mod10 || Encoded_Type == TYPE.MSI_Mod11_Mod10)
{
//get second check digit if 2 mod 10 was selected or Mod11/Mod10
var odds = string.Empty;
var evens = string.Empty;
for (var i = PreEncoded.Length - 1; i >= 0; i -= 2)
{
odds = PreEncoded[i] + odds;
if (i - 1 >= 0)
{
evens = PreEncoded[i - 1] + evens;
}
}
//multiply odds by 2
odds = Convert.ToString(int.Parse(odds) * 2);
var evensum = 0;
var oddsum = 0;
foreach (var c in evens)
{
evensum += int.Parse(c.ToString());
}
foreach (var c in odds)
{
oddsum += int.Parse(c.ToString());
}
var checksum = 10 - (oddsum + evensum) % 10;
PreEncoded += checksum.ToString();
}
var result = "110";
foreach (var c in PreEncoded)
{
result += MSI_Code[int.Parse(c.ToString())];
}
//add stop character
result += "1001";
return(result);
}
