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79 lines
2.1 KiB
C#
79 lines
2.1 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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/// Postnet encoding
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/// Written by: Brad Barnhill
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/// </summary>
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class Postnet : BarcodeCommon, IBarcode
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{
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private string[] POSTNET_Code = { "11000", "00011", "00101", "00110", "01001", "01010", "01100", "10001", "10010", "10100" };
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public Postnet(string input)
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{
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Raw_Data = input;
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}//Postnet
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/// <summary>
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/// Encode the raw data using the PostNet algorithm.
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/// </summary>
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private string Encode_Postnet()
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{
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//remove dashes if present
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Raw_Data = Raw_Data.Replace("-", "");
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switch (Raw_Data.Length)
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{
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case 5:
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case 6:
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case 9:
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case 11: break;
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default: Error("EPOSTNET-2: Invalid data length. (5, 6, 9, or 11 digits only)");
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break;
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}//switch
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//Note: 0 = half bar and 1 = full bar
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//initialize the result with the starting bar
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string result = "1";
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int checkdigitsum = 0;
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foreach (char c in Raw_Data)
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{
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try
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{
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int index = Convert.ToInt32(c.ToString());
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result += POSTNET_Code[index];
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checkdigitsum += index;
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}//try
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catch (Exception ex)
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{
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Error("EPOSTNET-2: Invalid data. (Numeric only) --> " + ex.Message);
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}//catch
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}//foreach
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//calculate and add check digit
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int temp = checkdigitsum % 10;
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int checkdigit = 10 - (temp == 0 ? 10 : temp);
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result += POSTNET_Code[checkdigit];
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//ending bar
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result += "1";
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return result;
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}//Encode_PostNet
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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_Postnet(); }
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}
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#endregion
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}//class
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}//namespace
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