logger.h

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/*
* -------------------------------------------
 * Copyright (c) 2021 - 2026 Prashant K. Jha
 * -------------------------------------------
 * PeriDEM https://github.com/prashjha/PeriDEM
 *
 * Distributed under the Boost Software License, Version 1.0. (See accompanying
 * file LICENSE)
 */
 
#ifndef UTILS_IO_LOGGER_H
#define UTILS_IO_LOGGER_H
 
#include "loggerDeck.h"
#include "parallelUtil.h" // to make prints MPI aware
#include "constants.h"
 
namespace util {
    namespace io {
        class Logger {
        public:
            Logger(LoggerDeck *deck = nullptr) : d_deck_p(deck) {
                if (d_deck_p == nullptr)
                    d_deck_p = new LoggerDeck();
            }
 
            ~Logger() {
                if (d_deck_p->d_printFile)
                    d_logFile.close();
            }
 
            void log(std::ostringstream &oss, bool screen_out = false,
                     int printMpiRank = print_default_mpi_rank) {
                log(oss.str(), screen_out, printMpiRank);
 
                // reset oss
                oss.str("");
                oss.clear();
            };
 
            void log(const std::string &str, bool screen_out = false,
                     int printMpiRank = print_default_mpi_rank) {
                if (printMpiRank < 0 or util::parallel::mpiRank() == printMpiRank) {
                    if (d_deck_p->d_printScreen || screen_out)
                        std::cout << str << std::flush;
 
                    // log
                    if (d_deck_p->d_printFile) {
                        d_logFile.open(d_deck_p->d_filename, std::ios_base::app);
                        d_logFile << str;
                        d_logFile.close();
                    }
                }
            };
 
            LoggerDeck *d_deck_p;
 
            std::ofstream d_logFile;
        };
    } // namespace io
} // namespace util
 
#endif // UTILS_IO_LOGGER_H