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std::string  DtaSAX2Handler::generateFoutName( int charge )
{
  std::string foutName;
  std::string::size_type len;
  std::string::size_type pos;

  foutName = m_fileName;
  pos = foutName.rfind("/") + 1;                // If file name was given with
                                                // path let's get rid of it
  len = foutName.size() - pos - 6;              // We don't wan't the ending ".xml"

  foutName = foutName.substr( pos , len );

  if( charge == 0 )     // We use this special cas to get just the fileName
    {                   // without nrs. So that we can use as our dirName
      return foutName;
    }

  std::stringstream sout;

  std::string chargeStr;        // Convert charge from int to string
  sout << charge;
  chargeStr = sout.str();
  sout.clear();                 // Clear errors
  sout.str("");                 // Clean stream and we are ready to use it again

  std::string startScan;
  std::string endScan;
  sout.fill('0');
  sout.width(4);
  sout << m_scanNum;
  sout >> startScan;
  endScan = startScan;          // For the moment we don't integrate multiple spectra

  foutName = foutName + "." + startScan + "." + endScan + "." + chargeStr + ".dta";