CPP

c++ string to vector using delimiter

/*----------------------------------------------------------
Converts a string into a vector of strings based on the delimiter given
------------------------------------------------------------*/
vector<string> ConvertStringToVectorUsingDelimiter(string MainString, string Delimiter)
{
   vector<string> ReturnVector;
   int iDelLen = Delimiter.length();

   string sCur = "";

   int iN = 1; // iN = occurrence of the delimiter within the string
   int iPrevInd = 0;
   int iCurrInd = GetIndexOfNthOccurrenceInString(MainString,Delimiter,iN);

   if (iCurrInd == -1)
   {
      ReturnVector.push_back(MainString);
      return ReturnVector;
   }

   while (iCurrInd != -1)
   {
      string sCur = MainString.substr( (iPrevInd + iDelLen) , iCurrInd - (iPrevInd + iDelLen) );
      ReturnVector.push_back(sCur);

      iPrevInd = iCurrInd;
      iN++;
      iCurrInd = GetIndexOfNthOccurrenceInString(MainString,Delimiter,iN);
   }

   return ReturnVector;
}

/*----------------------------------------------------------
Gets the nth occurrence of the substring within the string
------------------------------------------------------------*/
int GetIndexOfNthOccurrenceInString(string sMain, string sSubstr, int iN)
{
   int iIndex = -1;
   size_t stIndex = 0;

   switch (iN)
   {
      case -1: // Uuser wants the very last occurrence of sSubstr
         stIndex = sMain.find_last_of(sSubstr);
         if (stIndex == string::npos)
         {
            return -1;
         }

         return int(stIndex);

      case 0: // provide for if the user asks for the 0th occurrence (make this the first occurence)
         iN = 1;
         break;
   }

   int iCurOccurrence = 0;

   while ( (iCurOccurrence != iN) && (iCurOccurrence < sMain.size()) )
   {
      stIndex++;
      stIndex = sMain.find(sSubstr, stIndex);
      if (stIndex == string::npos)
      {
         return -1;
      }
      iCurOccurrence++;
      iIndex = int(stIndex);
   }

   int iPos = int(stIndex);
   return iIndex;
}