#ifndef __CSV_READER_H__
#define __CSV_READER_H__

#include <istream>
#include <ostream>
#include <string>

#include <vector>

/**
 * Flight Recoderで記録されたCVSファイルを読み込む
 * 
 */
class CSV_Reader {
  protected:
    typedef std::istream istream;
    typedef std::ostream ostream;
    typedef std::string string;
  
  public:
    typedef std::vector<string> item_t;
  
  protected:
    item_t next_item;
    istream &_in;
  public:
    CSV_Reader(istream &in) : _in(in), next_item() {}
    ~CSV_Reader() {}
    
    bool seek(const char delim = ','){
      if(!_in.good()){
        return false;
      }
      next_item.clear();
      
      char buf[4096];
      _in.getline(buf, sizeof(buf));
      if(_in.fail()){
        return false;
      }
      string str(buf);
      string::size_type pos;
      while((pos = str.find_first_of(delim)) != str.npos){
        next_item.push_back(str.substr(0, pos));
        str = str.substr(pos + 1);
      }
      next_item.push_back(str);
      
      return true;
    }
    
    item_t &next(){
      return next_item;
    }
    
    void inspect(ostream &out) const {
      for(item_t::const_iterator it(next_item.begin());
          it != next_item.end();
          ++it){
        out << *it << ",";
      }
      out << std::endl;  
    }
};

#endif /* __CSV_READER_H__ */