iTextSharp.text.pdf.PdfEncodings.ConvertToBytes C# (CSharp) Метод

    public static byte[] ConvertToBytes(char char1, String encoding) {
        if (encoding == null || encoding.Length == 0)
            return new byte[]{(byte)char1};
        IExtraEncoding extra = (IExtraEncoding)extraEncodings[encoding.ToLower(System.Globalization.CultureInfo.InvariantCulture)];
        if (extra != null) {
            byte[] b = extra.CharToByte(char1, encoding);
            if (b != null)
                return b;
        }
        IntHashtable hash = null;
        if (encoding.Equals(BaseFont.WINANSI))
            hash = winansi;
        else if (encoding.Equals(PdfObject.TEXT_PDFDOCENCODING))
            hash = pdfEncoding;
        if (hash != null) {
            int c = 0;
            if (char1 < 128 || (char1 > 160 && char1 <= 255))
                c = char1;
            else
                c = hash[char1];
            if (c != 0)
                return new byte[]{(byte)c};
            else
                return new byte[0];
        }
        Encoding encw = IanaEncodings.GetEncodingEncoding(encoding);
        byte[] preamble = encw.GetPreamble();
        char[] text = new char[]{char1};
        if (preamble.Length == 0)
            return encw.GetBytes(text);
        byte[] encoded = encw.GetBytes(text);
        byte[] total = new byte[encoded.Length + preamble.Length];
        Array.Copy(preamble, 0, total, 0, preamble.Length);
        Array.Copy(encoded, 0, total, preamble.Length, encoded.Length);
        return total;
    }
    

 internal override byte[] ConvertToBytes(int char1)
 {
     if (_cjkMirror != null)
     {
         return(PdfEncodings.ConvertToBytes((char)char1, CjkFont.CJK_ENCODING));
     }
     else if (_isType0)
     {
         int[] ws = (int[])_metrics[char1];
         if (ws != null)
         {
             int g = ws[0];
             return(new[] { (byte)(g / 256), (byte)(g) });
         }
         else
         {
             return(new byte[0]);
         }
     }
     else
     {
         if (Uni2Byte.ContainsKey(char1))
         {
             return new[] { (byte)Uni2Byte[char1] }
         }
         ;
         else
         {
             return(new byte[0]);
         }
     }
 }