CalDavSynchronizer.ThoughtvCardWorkaround.vCardImprovedWriter.EncodeQuotedPrintable C# (CSharp) Метод

      public static string EncodeQuotedPrintable(string value)
      {

        if (string.IsNullOrEmpty(value))
          return value;

        StringBuilder builder = new StringBuilder();

        foreach (char c in value)
        {

          int v = (int)c;

          // The following are not required to be encoded:
          //
          // - Tab (ASCII 9)
          // - Space (ASCII 32)
          // - Characters 33 to 126, except for the equal sign (61).

          if (
              (v == 9) ||
              ((v >= 32) && (v <= 60)) ||
              ((v >= 62) && (v <= 126)))
          {
            builder.Append(c);
          }
          else
          {
            builder.Append('=');
            builder.Append(v.ToString("X2"));
          }

        }

        char lastChar = builder[builder.Length - 1];
        if (char.IsWhiteSpace(lastChar))
        {
          builder.Remove(builder.Length - 1, 1);
          builder.Append('=');
          builder.Append(((int)lastChar).ToString("X2"));
        }

        return builder.ToString();

      }