config_parser.hpp

#ifndef __CONFIG_PARSER_HPP__
#define __CONFIG_PARSER_HPP__
/**************************************************************************
 *
 *     This file is part of Chiton.
 *
 *   Chiton is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   Chiton is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with Chiton.  If not, see <https://www.gnu.org/licenses/>.
 *
 *   Copyright 2020 Ed Martin <edman007@edman007.com>
 *
 **************************************************************************
 */
#include "chiton_config.hpp"
#include <fstream>
#include <sstream>

class ConfigParser {
public:
    ConfigParser(Config& cfg, std::ifstream& ifs) : cfg(cfg), ifs(ifs) {};
    void parse(void);//reads the config and sets all values found into cfg

private:
    Config& cfg;
    std::ifstream& ifs;

    
    void reset_parser(void);
    
    char c;
    std::stringbuf key;
    std::stringbuf value;
    enum {
        BEFORE_KEY,
        IN_KEY,
        AFTER_KEY,
        BEFORE_VAL,
        IN_VAL,
        AFTER_VAL,
        IN_COMMENT
    } state;

    bool escape = false;//if we are escaping the next char
    bool doublequote = false;//we are inside double quotes
    bool singlequote = false;//we are inside single quotes

    
  
    //position info
    int line = 1;
    int pos = 0;

    bool next();//gets a character and updates position information

    void report_parse_error(void);
};

#endif