FileEventIndex.h

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//
// Copyright 2020, Jefferson Science Associates, LLC.
// Subject to the terms in the LICENSE file found in the top-level directory.
//
// EPSCI Group
// Thomas Jefferson National Accelerator Facility
// 12000, Jefferson Ave, Newport News, VA 23606
// (757)-269-7100


#ifndef EVIO_6_0_FILEEVENTINDEX_H
#define EVIO_6_0_FILEEVENTINDEX_H


#include <string>
#include <iostream>
#include <iomanip>
#include <sstream>
#include <algorithm>
#include <vector>


namespace evio {


    class FileEventIndex {

    private:

        uint32_t currentEvent = 0;

        uint32_t currentRecord = 0;

        uint32_t currentRecordEvent = 0;

        std::vector<uint32_t> recordIndex;

    public:

        FileEventIndex() = default;

        void clear();
        void resetIndex();
        void show();
        void addEventSize(uint32_t size);

        uint32_t getEventNumber()       const;
        uint32_t getRecordNumber()      const;
        uint32_t getRecordEventNumber() const;
        uint32_t getMaxEvents()         const;

        bool canAdvance() const;
        bool canRetreat() const;
        bool advance();
        bool retreat();
        bool setEvent(uint32_t event);

        std::string toString();

        int main(int argc, char **argv);

        // TODO: overwrite = operator ???

    };

}

#endif //EVIO_6_0_FILEEVENTINDEX_H