DatFile.hpp

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#ifndef FOCS_DATFILE
#define FOCS_DATFILE
 
#include <functional>
#include <iterator>
#include <string>
#include <tuple>
#include <unordered_map>
#include <vector>
 
namespace focs {
    class DatFile {
        using Callback = std::function<bool(const std::tuple<std::string, int, double>&)>;
        public:
            DatFile() = default;
            explicit DatFile(const std::string& file);
            DatFile(const std::string& file, Callback callback);
 
            bool load(const std::string& file);
            bool load(std::istream& in);
            bool load_line(const std::string& line);
 
            bool empty() { return kv_.empty(); };
 
            std::unordered_map<std::string, std::vector<double>>::const_iterator begin() const;
            std::unordered_map<std::string, std::vector<double>>::const_iterator end() const;
 
            std::vector<double>& operator[] (const std::string& k);
            std::vector<double>& operator[] (std::string&& k);
 
            friend std::ostream& operator<<(std::ostream& os, const DatFile& kv);
 
            void callback(Callback callback){callback_ = callback;}
            Callback callback(){return callback_;}
 
        private:
            std::unordered_map<std::string, std::vector<double>> kv_{};
 
            Callback callback_{};
    };
} // namespace focs
 
#endif // FOCS_DATFILE