parseDat.cpp

#include "parseDat.h"
#include <fstream>
#include <sstream>

using std::cout;
using std::endl;
using std::ifstream;
using std::ostream;

parseData::parseData() {}

// converts csv file into 1 D vector
void parseData::fileToVect(const string &file) {
  ifstream ifs(file);
  string str;
  while (getline(ifs, str)) {
    csvVector.push_back(str);
  }
  ifs.close();
}

// takes the 1 D vector and converts it into 2D
void parseData::vectorToTwoDimension() {
  for (string &str : csvVector) {
    csvInTwoDimension.push_back(splitString(str));
  }
}

// splits the string
vector<string> parseData::splitString(string str) {
  vector<string> v;
  string line;
  std::stringstream sstr(str);
  while (getline(sstr, line)) {         // read full line
    const char *mystart = line.c_str(); // prepare to parse the line - start is
                                        // position of begin of field
    bool instring{false};
    for (const char *p = mystart; *p; p++) { // iterate through the string
      if (*p == '"') // toggle flag if we're btw double quote
        instring = !instring;
      else if (*p == ',' && !instring) { // if comma OUTSIDE double quote
        v.push_back(string(mystart, p - mystart)); // keep the field
        mystart = p + 1;                           // and start parsing next one
      }
    }
    v.push_back(string(
        mystart)); // last field delimited by end of line instead of comma
  }
  return v;
}

// creates and returns 2-D vector. public function.
vector<vector<string>> parseData::getDataVector(string file) {
  fileToVect(file);
  vectorToTwoDimension();
  return csvInTwoDimension;
}