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97 lines
3.0 KiB
C#
97 lines
3.0 KiB
C#
9 months ago
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace BarcodeLib.Symbologies
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{
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/// <summary>
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/// Code 11 encoding
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/// Written by: Brad Barnhill
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/// </summary>
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class Code11 : BarcodeCommon, IBarcode
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{
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private string[] C11_Code = { "101011", "1101011", "1001011", "1100101", "1011011", "1101101", "1001101", "1010011", "1101001", "110101", "101101", "1011001" };
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public Code11(string input)
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{
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Raw_Data = input;
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}//Code11
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/// <summary>
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/// Encode the raw data using the Code 11 algorithm.
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/// </summary>
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private string Encode_Code11()
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{
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if (!CheckNumericOnly(Raw_Data.Replace("-", "")))
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Error("EC11-1: Numeric data and '-' Only");
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//calculate the checksums
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int weight = 1;
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int CTotal = 0;
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string Data_To_Encode_with_Checksums = Raw_Data;
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//figure the C checksum
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for (int i = Raw_Data.Length - 1; i >= 0; i--)
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{
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//C checksum weights go 1-10
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if (weight == 10) weight = 1;
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if (Raw_Data[i] != '-')
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CTotal += Int32.Parse(Raw_Data[i].ToString()) * weight++;
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else
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CTotal += 10 * weight++;
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}//for
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int checksumC = CTotal % 11;
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Data_To_Encode_with_Checksums += checksumC.ToString();
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//K checksums are recommended on any message length greater than or equal to 10
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if (Raw_Data.Length >= 10)
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{
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weight = 1;
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int KTotal = 0;
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//calculate K checksum
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for (int i = Data_To_Encode_with_Checksums.Length - 1; i >= 0; i--)
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{
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//K checksum weights go 1-9
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if (weight == 9) weight = 1;
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if (Data_To_Encode_with_Checksums[i] != '-')
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KTotal += Int32.Parse(Data_To_Encode_with_Checksums[i].ToString()) * weight++;
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else
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KTotal += 10 * weight++;
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}//for
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int checksumK = KTotal % 11;
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Data_To_Encode_with_Checksums += checksumK.ToString();
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}//if
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//encode data
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string space = "0";
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string result = C11_Code[11] + space; //start-stop char + interchar space
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foreach (char c in Data_To_Encode_with_Checksums)
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{
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int index = (c == '-' ? 10 : Int32.Parse(c.ToString()));
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result += C11_Code[index];
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//inter-character space
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result += space;
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}//foreach
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//stop bars
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result += C11_Code[11];
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return result;
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}//Encode_Code11
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#region IBarcode Members
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public string Encoded_Value
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{
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get { return Encode_Code11(); }
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}
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#endregion
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}//class
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}//namespace
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