Config.hpp

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#ifndef ORG_EEROS_CORE_CONFIG_HPP_
#define ORG_EEROS_CORE_CONFIG_HPP_

#include <utility>
#include <sstream>
#include <cstdlib>
#include <cmath>
#include <vector>
#include <map>
#include <functional>
#include <array>
#include <string.h>

namespace eeros {
    namespace config {

        struct ConfigPropertyAccessor {
            std::function<int(const char *, char *, int)> set;
            std::function<int(const char *, const char *, int)> get;
        };

        struct CharPtrCompare
        {
            bool operator()(const char *first, const char  *second)
            {
                return strcmp(first, second) < 0;
            }
        };

        class Config {
        public:
            Config(const char *path = nullptr);
            virtual ~Config();
            
            virtual void loadDefaults();
            virtual bool save(const char *path = nullptr) = 0;
            virtual bool load(const char *path = nullptr) = 0;
            
        protected:
            virtual void add(const char *name, int &value);
            virtual void add(const char *name, double &value);
            virtual void add(const char *name, std::size_t length, int *start, int *end, int default_value = -1);
            virtual void add(const char *name, std::size_t length, double *start, double *end, double default_value = NAN);
            virtual void add(const char *name, std::string &value);

            template < typename T, std::size_t N >
            void add(const char *name, std::array<T,N> &value);
            
            const char *path;
            std::map<const char*, ConfigPropertyAccessor, CharPtrCompare> properties;
        };


        template < typename T, std::size_t N >
        void Config::add(const char *name, std::array<T,N> &value) {
            add(name, N, value.begin(), value.end());
        }
    }
}

#endif // ORG_EEROS_CORE_CONFIG_HPP_