ConfigParser header file

configparser.hxx

/*
 *      configparser.hxx
 *      
 *      Copyright 2011 FurryHead <[email protected]>
 *      
 *      ConfigParser 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 2 of the License, or
 *      (at your option) any later version.
 *      
 *      ConfigParser 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 ConfigParser; if not, write to the Free Software
 *      Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 *      MA 02110-1301, USA.
 *      
 *      
 */
 
#include <map>
#include <vector>
#include <string>
#include <fstream>

class Section {
    std::map<std::string,std::string> values;
    std::string s_name;
    
    public:
    Section(std::string section_name);
    std::string name();
    const std::map<std::string,std::string>& items();
    std::vector<std::string> options();
    void remove_option(std::string option);
    void set(std::string option, std::string value);
    std::string get(std::string option);
    bool has_option(std::string option) ;
};

class ConfigParser {
    std::vector<Section> _sections;
    int current_line_no;
    Section current_section;
    
    protected:
    Section* get_section(std::string section);
    bool valid_key(std::string key);
    std::string parse_line(std::string line);
    std::string get_vars(std::string var);
    
    public:
    ConfigParser(std::string filename);
    ConfigParser();
    
    void read(std::string filename);
    void read(std::istream& file);
    void write(std::string filename);
    void write(std::ostream& file);
    std::vector<std::string> sections();
    std::vector<std::string> options(std::string section);
    std::string get(std::string section, std::string key);
    std::string set(std::string section, std::string key, std::string value);
    const std::map<std::string, std::string>& items(std::string section);
    bool has_section(std::string section);
    bool has_option(std::string section, std::string option);
    void add_section(std::string section);
    void remove_section(std::string section);
    void remove_option(std::string section, std::string option);
};

class SyntaxError { 
    std::string estr;
    
    public:
    SyntaxError(std::string error);
    std::string what();
};