How to use RFA C++ to handle Chinese characters in the DSPLY_NMLL field of 0981.HK

Catherine Wong
Catherine Wong Explorer
in RFA

I have implemented RFA MarketDataSubscriber interface to subscribe data from 0981.HK RIC. I expect to receive Chinese character in the DSPLY_NMLL field, but the TibMsg::PrintTib() method prints the following output.

DSPLY_NMLL : STRING 20 : [^[$*5^[}à ãÃÃÃÃë㡾仡¿]

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Best Answer

  • veerapath.rungruengrayubkul
    veerapath.rungruengrayubkul LSEG
    Answer ✓

    The data type of the DSPLY_NMLL field is RMTES_STRING whose data is encoded with the
    Reuters Multilingual Text Encoding Standard (RMTES). RMTES uses ISO 2022 escape
    sequences to select the character sets used.

    The
    TibMsg API provided in the RFA package provides conversion functionality to
    convert RMTES encoded strings received through Market Feed connections to
    Unicode string. The functions are TibMsg::ConvertToUTF8() which converts
    MarketFeed string data to UTF8 string data and TibMsg::ConvertToUCS2() which
    converts MarketFeed string data to UCS2 string data. For more information,
    please see the “12.3.13. TibMsg::ConvertToUCS2, TibMsg::ConvertToUTF8” section
    in the TibMsg API programming guide document (tmsgapi.pdf) provided in the RFA C++
    package.

    For other APIs, please see the information in this question.

    Please
    see the following codes for the example code.

      err = tMsg.Get("DSPLY_NMLL",  fldTmp);

      if (!err.code)
      {
          char str_data[512];
          if (fldTmp.Type() == TIBMSG_STRING && fldTmp.HintType() ==
      TIBMSG_NODATA) 
          {
               printf("%s:  \n", fldTmp.Name());
               strncpy(str_data, (char*)fldTmp.Data(), fldTmp.Size());
               str_data[fldTmp.Size()]  = '\0';

               printf("String data : %s\n", str_data);
               Tib_i32  conv_len = 0;

               // UTF8 - 1 char can be 3 chars
               char *UTF8_data = new char[(fldTmp.Size()  * 3) + 1];
               TibErr err = TibMsg::ConvertToUTF8((char*)fldTmp.Data(), fldTmp.Size(), UTF8_data,(fldTmp.Size() * 3) + 1, conv_len);

               // UCS2 - 1 char can be 2 chars
               unsigned short*  ucs2_data = new unsigned short[(fldTmp.Size() * 2) + 1];
               err = TibMsg::ConvertToUCS2((char*)fldTmp.Data(), fldTmp.Size(), ucs2_data,(fldTmp.Size() * 2) + 1, conv_len);

               delete[] UTF8_data;
               delete[] ucs2_data;
               printf("\n"); }
           }

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