Program Listing for File parser.h

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#ifndef PARSER_H_
#define PARSER_H_
#include <iostream>
#include <vector>
#include <fstream>


class SettingsParserException : public std::exception {
private:
  std::string message;
public:
  SettingsParserException(const char* msg) : message(msg) {}
  const char* what() const throw() {
    return message.c_str();
  }
};

class Settings {
private:
  struct option {
    char type;
    std::string name;
    double value_d;
    std::string value_s;
    option(std::string n, double v) : name(n), value_d(0), value_s("") {}
    option(std::string n, std::string v);
    option() : name(""), value_d(0), value_s("") {}
  };
  std::vector<option> settings;
  std::ifstream input_file;
  bool ParseLine(std::string line);
public:
  Settings(const char* filename);
  ~Settings();

  int LoadSettings();

  double GetOptionDouble(std::string name);
  std::string GetOptionString(std::string name);
  bool GetOptionBool(std::string name);
};

#endif //PARSER_H_