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条码39Code函数

    /**/
    /*---------------------------------------------------------------------*/
    /**/
    /* Function: Code39 - applies to Morovia Code39 Fontware                              */
    /**/
    /* Code39(text) Converts the input text into a Code 39 barcode string. The        */
    /**/
    /* function throws off characters not in the Code 39 character set,        */
    /**/
    /* and adds start/stop characters.                                                                          */
    /**/
    /*----------------------------------------------------------------------*/
    public string Code39(string szInpara)
    {
        int i, nPos;
        string szBuffer = "";
        string szCharSet = "0123456789.+-/ $%ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        i = 0;
        while (i < szInpara.Length)
        {
            nPos = szCharSet.IndexOf(szInpara[i]);
            if (szInpara[i] == ' ')
                szBuffer += "=";
            else if (nPos >= 0)
                szBuffer += szInpara[i];
            i = i + 1;
        }
        return "*" + szBuffer + "*";

    }
    /**/
    /*--------------------------Code39Mod43---------------------------------------*/
    /**/
    /*Converts the input text into a Code39 extended symbol. This function */
    /**/
    /*should be used to format Morovia code39 font, not Code39 full ASCII font.*/
    /**/
    /*The text can be any combinations of ASCII characters. Note that the symbol */
    /**/
    /*generated is an extended Code39, and the scanner must be put in Code39 */
    /**/
    /*extended mode to read the symbol properly.*/
    /**/
    /*----------------------------------------------------------------------------*/
    public string Code39Mod43(string szInpara)
    {
        int i = 0, nPos, nCheckSum = 0;
        string inPara = "";
        string szBuffer = "";
        string szSwap = "";
        string szCharSet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%";
        string szMappingSet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-.=$/+%";
        i = 0;
        inPara = szInpara;
        while (i < inPara.Length)
        {
            nPos = szCharSet.IndexOf(inPara[i]);
            if (nPos >= 0)
            {
                szBuffer += szMappingSet[nPos];
                nCheckSum = nCheckSum + nPos;
            }
            i = i + 1;
        }
        nCheckSum = nCheckSum % 43;
        szSwap = '*' + szBuffer + szMappingSet[nCheckSum] + '*';
        return szSwap;
    }
    /**/
    /*--------------------------------Code39Ascii----------------------------------------------*/
    /**/
    /*Converts the input text into a Code39 extended symbol. This function should be */
    /**/
    /*used to format Morovia code39 font, not Code39 full ASCII font. The text can be*/
    /**/
    /*any combinations of ASCII characters. Note that the symbol generated is an extended*/
    /**/
    /*Code39, and the scanner must be put in Code39 extended mode to read the symbol properly.*/
    /**/
    /*-----------------------------------------------------------------------------------------*/
    public string Code39Ascii(string szInpara)
    {
        int i = 0, nPos;
        string szBuffer = "";
        string szSpecial = "";
        string szWap = "";
        szSpecial = SpecialChar(szInpara);
        szInpara = szSpecial;
        string szCharSet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. " + (char)240;
        string szMappingSet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-.=" + (char)240;
        while (i < szInpara.Length)
        {
            nPos = szCharSet.IndexOf(szInpara[i]);
            if (nPos >= 0)
                szBuffer += szMappingSet[nPos];
            else if (szInpara[i] == 0)
                szBuffer += "%U";
            else if (szInpara[i] == ' ')      //control characters
                szBuffer += '=';
            else if (szInpara[i] == '/')
                szBuffer += "/O";
            else if (szInpara[i] == ':')
                szBuffer += "/Z";
            else if (szInpara[i] == 64)
                szBuffer += "%V";
            else if (szInpara[i] == 96)
                szBuffer += "%W";
            else if (szInpara[i] > 0 && szInpara[i] <= 26)
            {
                szBuffer += '$';
                szBuffer += (char)(szInpara[i] + 'A' - 1);
            }
            else if (szInpara[i] > 32 && szInpara[i] <= 46)
            {
                szBuffer += '/';
                szBuffer += (char)((szInpara[i] % 32) + 'A' - 1);
            }
            else if (szInpara[i] >= 97 && szInpara[i] <= 122)
            {
                szBuffer += '+';
                szBuffer += (char)((szInpara[i] % 32) + 'A' - 1);
            }
            else if (szInpara[i] >= 27 && szInpara[i] <= 31)
            {
                szBuffer += '%';
                szBuffer += (char)(szInpara[i] - 27 + 'A');
            }
            else if (szInpara[i] >= 59 && szInpara[i] <= 63)
            {
                szBuffer += '%';
                szBuffer += (char)(szInpara[i] - 59 + 'F');
            }
            else if (szInpara[i] >= 91 && szInpara[i] <= 95)
            {
                szBuffer += '%';
                szBuffer += (char)(szInpara[i] - 91 + 'K');
            }
            else if (szInpara[i] >= 123 && szInpara[i] <= 127)
            {
                szBuffer += '%';
                szBuffer += (char)(szInpara[i] - 123 + 'P');
            }
            i = i + 1;
        }

        //replace NULL char
        i = 0;
        while (i < szBuffer.Length)
        {
            if (szBuffer[i] == 240)
                szWap += "%U";
            else
                szWap += szBuffer[i];
            i++;
        }

        return '[' + szWap + ']';
    }
    /**/
    /*---------------------------------Code39Extended------------------------------------*/
    /**/
    /*Converts the input text into a Code39 extended symbol. It accepts any ASCII */
    /**/
    /*characters as input. The only difference from function Code39Ascii is the former */
    /**/
    /*is designed to work with Morovia Code39(Full ASCII) font and the latter is designed*/
    /**/
    /*to work with Morovia Code39 font.*/
    /**/
    /*-----------------------------------------------------------------------------------*/
    public string Code39Extended(string szInpara)
    {
        int i = 0; char ch;
        string szSwap = "";
        string szSpecial = "";
        string szOutPut = "";
        szSpecial = SpecialChar(szInpara);
        szSwap = szSpecial;

        for (i = 0; i < szSwap.Length; i++)
        {
            ch = szSwap[i];
            if (ch == 240)
                szOutPut += (char)0xC0;
            else if (ch > 0 && ch <= 0x1F)
                szOutPut += (char)(0xC0 + ch);
            else if (ch == ' ')    //space is mapped to equal sign
                szOutPut += '=';
            else if (ch == '*')
                szOutPut += (char)0xF4;
            else if (ch == '=')
                szOutPut += (char)0xF0;
            else if (ch == '[')
                szOutPut += (char)0xF1;
            else if (ch == ']')
                szOutPut += (char)0xF2;
            else if (ch == 0x7F)
                szOutPut += (char)0xE0;
            else
                szOutPut += ch;
        }