using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
namespace BarcodeLib.Symbologies
{
class Code128 : BarcodeCommon, IBarcode
{
public enum TYPES:int { DYNAMIC, A, B, C };
private DataTable C128_Code = new DataTable("C128");
private List<string> _FormattedData = new List<string>();
private List<string> _EncodedData = new List<string>();
private DataRow StartCharacter = null;
private TYPES type = TYPES.DYNAMIC;
/// <summary>
/// Encodes data in Code128 format.
/// </summary>
/// <param name="input">Data to encode.</param>
public Code128(string input)
{
Raw_Data = input;
}//Code128
/// <summary>
/// Encodes data in Code128 format.
/// </summary>
/// <param name="input">Data to encode.</param>
/// <param name="type">Type of encoding to lock to. (Code 128A, Code 128B, Code 128C)</param>
public Code128(string input, TYPES type)
{
this.type = type;
Raw_Data = input;
}//Code128
private string Encode_Code128()
{
//initialize datastructure to hold encoding information
this.init_Code128();
return GetEncoding();
}//Encode_Code128
private void init_Code128()
{
//set the table to case sensitive since there are upper and lower case values
this.C128_Code.CaseSensitive = true;
//set up columns
this.C128_Code.Columns.Add("Value", typeof(string));
this.C128_Code.Columns.Add("A", typeof(string));
this.C128_Code.Columns.Add("B", typeof(string));
this.C128_Code.Columns.Add("C", typeof(string));
this.C128_Code.Columns.Add("Encoding", typeof(string));
//populate data
this.C128_Code.Rows.Add(new object[] { "0", " ", " ", "00", "11011001100" });
this.C128_Code.Rows.Add(new object[] { "1", "!", "!", "01", "11001101100" });
this.C128_Code.Rows.Add(new object[] { "2", "\"", "\"", "02", "11001100110" });
this.C128_Code.Rows.Add(new object[] { "3", "#", "#", "03", "10010011000" });
this.C128_Code.Rows.Add(new object[] { "4", "$", "$", "04", "10010001100" });
this.C128_Code.Rows.Add(new object[] { "5", "%", "%", "05", "10001001100" });
this.C128_Code.Rows.Add(new object[] { "6", "&", "&", "06", "10011001000" });
this.C128_Code.Rows.Add(new object[] { "7", "'", "'", "07", "10011000100" });
this.C128_Code.Rows.Add(new object[] { "8", "(", "(", "08", "10001100100" });
this.C128_Code.Rows.Add(new object[] { "9", ")", ")", "09", "11001001000" });
this.C128_Code.Rows.Add(new object[] { "10", "*", "*", "10", "11001000100" });
this.C128_Code.Rows.Add(new object[] { "11", "+", "+", "11", "11000100100" });
this.C128_Code.Rows.Add(new object[] { "12", ",", ",", "12", "10110011100" });
this.C128_Code.Rows.Add(new object[] { "13", "-", "-", "13", "10011011100" });
this.C128_Code.Rows.Add(new object[] { "14", ".", ".", "14", "10011001110" });
this.C128_Code.Rows.Add(new object[] { "15", "/", "/", "15", "10111001100" });
this.C128_Code.Rows.Add(new object[] { "16", "0", "0", "16", "10011101100" });
this.C128_Code.Rows.Add(new object[] { "17", "1", "1", "17", "10011100110" });
this.C128_Code.Rows.Add(new object[] { "18", "2", "2", "18", "11001110010" });
this.C128_Code.Rows.Add(new object[] { "19", "3", "3", "19", "11001011100" });
this.C128_Code.Rows.Add(new object[] { "20", "4", "4", "20", "11001001110" });
this.C128_Code.Rows.Add(new object[] { "21", "5", "5", "21", "11011100100" });
this.C128_Code.Rows.Add(new object[] { "22", "6", "6", "22", "11001110100" });
this.C128_Code.Rows.Add(new object[] { "23", "7", "7", "23", "11101101110" });
this.C128_Code.Rows.Add(new object[] { "24", "8", "8", "24", "11101001100" });
this.C128_Code.Rows.Add(new object[] { "25", "9", "9", "25", "11100101100" });
this.C128_Code.Rows.Add(new object[] { "26", ":", ":", "26", "11100100110" });
this.C128_Code.Rows.Add(new object[] { "27", ";", ";", "27", "11101100100" });
this.C128_Code.Rows.Add(new object[] { "28", "<", "<", "28", "11100110100" });
this.C128_Code.Rows.Add(new object[] { "29", "=", "=", "29", "11100110010" });
this.C128_Code.Rows.Add(new object[] { "30", ">", ">", "30", "11011011000" });
this.C128_Code.Rows.Add(new object[] { "31", "?", "?", "31", "11011000110" });
this.C128_Code.Rows.Add(new object[] { "32", "@", "@", "32", "11000110110" });
this.C128_Code.Rows.Add(new object[] { "33", "A", "A", "33", "10100011000" });
this.C128_Code.Rows.Add(new object[] { "34", "B", "B", "34", "10001011000" });
this.C128_Code.Rows.Add(new object[] { "35", "C", "C", "35", "10001000110" });
this.C128_Code.Rows.Add(new object[] { "36", "D", "D", "36", "10110001000" });
this.C128_Code.Rows.Add(new object[] { "37", "E", "E", "37", "10001101000" });
this.C128_Code.Rows.Add(new object[] { "38", "F", "F", "38", "10001100010" });
this.C128_Code.Rows.Add(new object[] { "39", "G", "G", "39", "11010001000" });
this.C128_Code.Rows.Add(new object[] { "40", "H", "H", "40", "11000101000" });
this.C128_Code.Rows.Add(new object[] { "41", "I", "I", "41", "11000100010" });
this.C128_Code.Rows.Add(new object[] { "42", "J", "J", "42", "10110111000" });
this.C128_Code.Rows.Add(new object[] { "43", "K", "K", "43", "10110001110" });
this.C128_Code.Rows.Add(new object[] { "44", "L", "L", "44", "10001101110" });
this.C128_Code.Rows.Add(new object[] { "45", "M", "M", "45", "10111011000" });
this.C128_Code.Rows.Add(new object[] { "46", "N", "N", "46", "10111000110" });
this.C128_Code.Rows.Add(new object[] { "47", "O", "O", "47", "10001110110" });
this.C128_Code.Rows.Add(new object[] { "48", "P", "P", "48", "11101110110" });
this.C128_Code.Rows.Add(new object[] { "49", "Q", "Q", "49", "11010001110" });
this.C128_Code.Rows.Add(new object[] { "50", "R", "R", "50", "11000101110" });
this.C128_Code.Rows.Add(new object[] { "51", "S", "S", "51", "11011101000" });
this.C128_Code.Rows.Add(new object[] { "52", "T", "T", "52", "11011100010" });
this.C128_Code.Rows.Add(new object[] { "53", "U", "U", "53", "11011101110" });
this.C128_Code.Rows.Add(new object[] { "54", "V", "V", "54", "11101011000" });
this.C128_Code.Rows.Add(new object[] { "55", "W", "W", "55", "11101000110" });
this.C128_Code.Rows.Add(new object[] { "56", "X", "X", "56", "11100010110" });
this.C128_Code.Rows.Add(new object[] { "57", "Y", "Y", "57", "11101101000" });
this.C128_Code.Rows.Add(new object[] { "58", "Z", "Z", "58", "11101100010" });
this.C128_Code.Rows.Add(new object[] { "59", "[", "[", "59", "11100011010" });
this.C128_Code.Rows.Add(new object[] { "60",@"\",@"\", "60", "11101111010" });
this.C128_Code.Rows.Add(new object[] { "61", "]", "]", "61", "11001000010" });
this.C128_Code.Rows.Add(new object[] { "62", "^", "^", "62", "11110001010" });
this.C128_Code.Rows.Add(new object[] { "63", "_", "_", "63", "10100110000" });
this.C128_Code.Rows.Add(new object[] { "64", "\0", "`", "64", "10100001100" });
this.C128_Code.Rows.Add(new object[] { "65", Convert.ToChar(1).ToString(), "a", "65", "10010110000" });
this.C128_Code.Rows.Add(new object[] { "66", Convert.ToChar(2).ToString(), "b", "66", "10010000110" });
this.C128_Code.Rows.Add(new object[] { "67", Convert.ToChar(3).ToString(), "c", "67", "10000101100" });
this.C128_Code.Rows.Add(new object[] { "68", Convert.ToChar(4).ToString(), "d", "68", "10000100110" });
this.C128_Code.Rows.Add(new object[] { "69", Convert.ToChar(5).ToString(), "e", "69", "10110010000" });
this.C128_Code.Rows.Add(new object[] { "70", Convert.ToChar(6).ToString(), "f", "70", "10110000100" });
this.C128_Code.Rows.Add(new object[] { "71", Convert.ToChar(7).ToString(), "g", "71", "10011010000" });
this.C128_Code.Rows.Add(new object[] { "72", Convert.ToChar(8).ToString(), "h", "72", "10011000010" });
this.C128_Code.Rows.Add(new object[] { "73", Convert.ToChar(9).ToString(), "i", "73", "10000110100" });
this.C128_Code.Rows.Add(new object[] { "74", Convert.ToChar(10).ToString(), "j", "74", "10000110010" });
this.C128_Code.Rows.Add(new object[] { "75", Convert.ToChar(11).ToString(), "k", "75", "11000010010" });
this.C128_Code.Rows.Add(new object[] { "76", Convert.ToChar(12).ToString(), "l", "76", "11001010000" });
this.C128_Code.Rows.Add(new object[] { "77", Convert.ToChar(13).ToString(), "m", "77", "11110111010" });
this.C128_Code.Rows.Add(new object[] { "78", Convert.ToChar(14).ToString(), "n", "78", "11000010100" });
this.C128_Code.Rows.Add(new object[] { "79", Convert.ToChar(15).ToString(), "o", "79", "10001111010" });
this.C128_Code.Rows.Add(new object[] { "80", Convert.ToChar(16).ToString(), "p", "80", "10100111100" });
this.C128_Code.Rows.Add(new object[] { "81", Convert.ToChar(17).ToString(), "q", "81", "10010111100" });
this.C128_Code.Rows.Add(new object[] { "82", Convert.ToChar(18).ToString(), "r", "82", "10010011110" });
this.C128_Code.Rows.Add(new object[] { "83", Convert.ToChar(19).ToString(), "s", "83", "10111100100" });
this.C128_Code.Rows.Add(new object[] { "84", Convert.ToChar(20).ToString(), "t", "84", "10011110100" });
this.C128_Code.Rows.Add(new object[] { "85", Convert.ToChar(21).ToString(), "u", "85", "10011110010" });
this.C128_Code.Rows.Add(new object[] { "86", Convert.ToChar(22).ToString(), "v", "86", "11110100100" });
this.C128_Code.Rows.Add(new object[] { "87", Convert.ToChar(23).ToString(), "w", "87", "11110010100" });
this.C128_Code.Rows.Add(new object[] { "88", Convert.ToChar(24).ToString(), "x", "88", "11110010010" });
this.C128_Code.Rows.Add(new object[] { "89", Convert.ToChar(25).ToString(), "y", "89", "11011011110" });
this.C128_Code.Rows.Add(new object[] { "90", Convert.ToChar(26).ToString(), "z", "90", "11011110110" });
this.C128_Code.Rows.Add(new object[] { "91", Convert.ToChar(27).ToString(), "{", "91", "11110110110" });
this.C128_Code.Rows.Add(new object[] { "92", Convert.ToChar(28).ToString(), "|", "92", "10101111000" });
this.C128_Code.Rows.Add(new object[] { "93", Convert.ToChar(29).ToString(), "}", "93", "10100011110" });
this.C128_Code.Rows.Add(new object[] { "94", Convert.ToChar(30).ToString(), "~", "94", "10001011110" });
this.C128_Code.Rows.Add(new object[] { "95", Convert.ToChar(31).ToString(), Convert.ToChar(127).ToString(), "95", "10111101000" });
this.C128_Code.Rows.Add(new object[] { "96", Convert.ToChar(202).ToString()/*FNC3*/, Convert.ToChar(202).ToString()/*FNC3*/, "96", "10111100010" });
this.C128_Code.Rows.Add(new object[] { "97", Convert.ToChar(201).ToString()/*FNC2*/, Convert.ToChar(201).ToString()/*FNC2*/, "97", "11110101000" });
this.C128_Code.Rows.Add(new object[] { "98", "SHIFT", "SHIFT", "98", "11110100010" });
this.C128_Code.Rows.Add(new object[] { "99", "CODE_C", "CODE_C", "99", "10111011110" });
this.C128_Code.Rows.Add(new object[] { "100", "CODE_B", Convert.ToChar(203).ToString()/*FNC4*/, "CODE_B", "10111101110" });
this.C128_Code.Rows.Add(new object[] { "101", Convert.ToChar(203).ToString()/*FNC4*/, "CODE_A", "CODE_A", "11101011110" });
this.C128_Code.Rows.Add(new object[] { "102", Convert.ToChar(200).ToString()/*FNC1*/, Convert.ToChar(200).ToString()/*FNC1*/, Convert.ToChar(200).ToString()/*FNC1*/, "11110101110" });
this.C128_Code.Rows.Add(new object[] { "103", "START_A", "START_A", "START_A", "11010000100" });
this.C128_Code.Rows.Add(new object[] { "104", "START_B", "START_B", "START_B", "11010010000" });
this.C128_Code.Rows.Add(new object[] { "105", "START_C", "START_C", "START_C", "11010011100" });
this.C128_Code.Rows.Add(new object[] { "", "STOP", "STOP", "STOP", "11000111010" });
}//init_Code128
private List<DataRow> FindStartorCodeCharacter(string s, ref int col)
{
List<DataRow> rows = new List<DataRow>();
//if two chars are numbers then START_C or CODE_C
if (s.Length > 1 && Char.IsNumber(s[0]) && Char.IsNumber(s[1]))
{
if (StartCharacter == null)
{
StartCharacter = this.C128_Code.Select("A = 'START_C'")[0];
rows.Add(StartCharacter);
}//if
else
rows.Add(this.C128_Code.Select("A = 'CODE_C'")[0]);
col = 1;
}//if
else
{
bool AFound = false;
bool BFound = false;
foreach (DataRow row in this.C128_Code.Rows)
{
try
{
if (!AFound && s == row["A"].ToString())
{
AFound = true;
col = 2;
if (StartCharacter == null)
{
StartCharacter = this.C128_Code.Select("A = 'START_A'")[0];
rows.Add(StartCharacter);
}//if
else
{
rows.Add(this.C128_Code.Select("B = 'CODE_A'")[0]);//first column is FNC4 so use B
}//else
}//if
else if (!BFound && s == row["B"].ToString())
{
BFound = true;
col = 1;
if (StartCharacter == null)
{
StartCharacter = this.C128_Code.Select("A = 'START_B'")[0];
rows.Add(StartCharacter);
}//if
else
rows.Add(this.C128_Code.Select("A = 'CODE_B'")[0]);
}//else
else if (AFound && BFound)
break;
}//try
catch (Exception ex)
{
Error("EC128-1: " + ex.Message);
}//catch
}//foreach
if (rows.Count <= 0)
Error("EC128-2: Could not determine start character.");
}//else
return rows;
}
private string CalculateCheckDigit()
{
string currentStartChar = _FormattedData[0];
uint CheckSum = 0;
for (uint i = 0; i < _FormattedData.Count; i++)
{
//replace apostrophes with double apostrophes for escape chars
string s = _FormattedData[(int)i].Replace("'", "''");
//try to find value in the A column
DataRow[] rows = this.C128_Code.Select("A = '" + s + "'");
//try to find value in the B column
if (rows.Length <= 0)
rows = this.C128_Code.Select("B = '" + s + "'");
//try to find value in the C column
if (rows.Length <= 0)
rows = this.C128_Code.Select("C = '" + s + "'");
uint value = UInt32.Parse(rows[0]["Value"].ToString());
uint addition = value * ((i == 0) ? 1 : i);
CheckSum += addition;
}//for
uint Remainder = (CheckSum % 103);
DataRow[] RetRows = this.C128_Code.Select("Value = '" + Remainder.ToString() + "'");
return RetRows[0]["Encoding"].ToString();
}
private void BreakUpDataForEncoding()
{
string temp = "";
string tempRawData = Raw_Data;
//breaking the raw data up for code A and code B will mess up the encoding
if (this.type == TYPES.A || this.type == TYPES.B)
{
foreach (char c in Raw_Data)
_FormattedData.Add(c.ToString());
return;
}//if
if (this.type == TYPES.C)
{
if (!IsNumeric(Raw_Data))
Error("EC128-6: Only numeric values can be encoded with C128-C.");
//CODE C: adds a 0 to the front of the Raw_Data if the length is not divisible by 2
if (Raw_Data.Length % 2 > 0)
tempRawData = "0" + Raw_Data;
}//if
foreach (char c in tempRawData)
{
if (Char.IsNumber(c))
{
if (temp == "")
{
temp += c;
}//if
else
{
temp += c;
_FormattedData.Add(temp);
temp = "";
}//else
}//if
else
{
if (temp != "")
{
_FormattedData.Add(temp);
temp = "";
}//if
_FormattedData.Add(c.ToString());
}//else
}//foreach
//if something is still in temp go ahead and push it onto the queue
if (temp != "")
{
_FormattedData.Add(temp);
temp = "";
}//if
}
private void InsertStartandCodeCharacters()
{
DataRow CurrentCodeSet = null;
string CurrentCodeString = "";
if (this.type != TYPES.DYNAMIC)
{
switch (this.type)
{
case TYPES.A: _FormattedData.Insert(0, "START_A");
break;
case TYPES.B: _FormattedData.Insert(0, "START_B");
break;
case TYPES.C: _FormattedData.Insert(0, "START_C");
break;
default: Error("EC128-4: Unknown start type in fixed type encoding.");
break;
}
}//if
else
{
try
{
for (int i = 0; i < (_FormattedData.Count); i++)
{
int col = 0;
List<DataRow> tempStartChars = FindStartorCodeCharacter(_FormattedData[i], ref col);
//check all the start characters and see if we need to stay with the same codeset or if a change of sets is required
bool sameCodeSet = false;
foreach (DataRow row in tempStartChars)
{
if (row["A"].ToString().EndsWith(CurrentCodeString) || row["B"].ToString().EndsWith(CurrentCodeString) || row["C"].ToString().EndsWith(CurrentCodeString))
{
sameCodeSet = true;
break;
}//if
}//foreach
//only insert a new code char if starting a new codeset
//if (CurrentCodeString == "" || !tempStartChars[0][col].ToString().EndsWith(CurrentCodeString)) /* Removed because of bug */
if (CurrentCodeString == "" || !sameCodeSet)
{
CurrentCodeSet = tempStartChars[0];
bool error = true;
while (error)
{
try
{
CurrentCodeString = CurrentCodeSet[col].ToString().Split(new char[] { '_' })[1];
error = false;
}//try
catch
{
error = true;
if (col++ > CurrentCodeSet.ItemArray.Length)
Error("No start character found in CurrentCodeSet.");
}//catch
}//while
_FormattedData.Insert(i++, CurrentCodeSet[col].ToString());
}//if
}//for
}//try
catch (Exception ex)
{
Error("EC128-3: Could not insert start and code characters.\n Message: " + ex.Message);
}//catch
}//else
}
private string GetEncoding()
{
//break up data for encoding
BreakUpDataForEncoding();
//insert the start characters
InsertStartandCodeCharacters();
string CheckDigit = CalculateCheckDigit();
string Encoded_Data = "";
foreach (string s in _FormattedData)
{
//handle exception with apostrophes in select statements
string s1 = s.Replace("'", "''");
DataRow[] E_Row;
//select encoding only for type selected
switch (this.type)
{
case TYPES.A: E_Row = this.C128_Code.Select("A = '" + s1 + "'");
break;
case TYPES.B: E_Row = this.C128_Code.Select("B = '" + s1 + "'");
break;
case TYPES.C: E_Row = this.C128_Code.Select("C = '" + s1 + "'");
break;
case TYPES.DYNAMIC: E_Row = this.C128_Code.Select("A = '" + s1 + "'");
if (E_Row.Length <= 0)
{
E_Row = this.C128_Code.Select("B = '" + s1 + "'");
if (E_Row.Length <= 0)
{
E_Row = this.C128_Code.Select("C = '" + s1 + "'");
}//if
}//if
break;
default: E_Row = null;
break;
}//switch
if (E_Row == null || E_Row.Length <= 0)
Error("EC128-5: Could not find encoding of a value( " + s1 + " ) in C128 type " + this.type.ToString());
Encoded_Data += E_Row[0]["Encoding"].ToString();
_EncodedData.Add(E_Row[0]["Encoding"].ToString());
}//foreach
//add the check digit
Encoded_Data += CalculateCheckDigit();
_EncodedData.Add(CalculateCheckDigit());
//add the stop character
Encoded_Data += this.C128_Code.Select("A = 'STOP'")[0]["Encoding"].ToString();
_EncodedData.Add(this.C128_Code.Select("A = 'STOP'")[0]["Encoding"].ToString());
//add the termination bars
Encoded_Data += "11";
_EncodedData.Add("11");
return Encoded_Data;
}
#region IBarcode Members
public string Encoded_Value
{
get { return Encode_Code128(); }
}
#endregion
}//class
}//namespace
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