logging.h

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#pragma once
 
#include <iostream>
 
#ifdef __clang__
#include <experimental/source_location>
using std::experimental::source_location;
#else
#ifdef __GNUG__ 
#include <experimental/source_location>
using std::experimental::source_location;
#else
#include <source_location>
using std::source_location;
#endif
#endif
 
#define FATAL_INTERNAL_ERROR_MSG(MSG)                                                                                                                          \
    {                                                                                                                                                          \
        const source_location location = source_location::current();                                                                                           \
        std::cout << "FATAL INTERNAL ERROR in <" << location.function_name() << "> at <" << location.line() << ">\n";                                          \
        std::cout << MSG;                                                                                                                                      \
        std::terminate();                                                                                                                                      \
    }
 
namespace helper
{
namespace logging
{
 
enum class LogLevel
{
    none = 0,
    error = 1,
    warning = 2,
    trace = 3
};
 
void initLogging(LogLevel log_level, const std::string& log_file_path = "");
 
void flush();
 
std::ostream& printError(const source_location location = source_location::current());
 
std::ostream& printWarning(const source_location location = source_location::current());
 
std::ostream& printTrace(const source_location location = source_location::current());
 
std::ostream& printLog(LogLevel log_level, const source_location location);
 
std::string logLevelToString(LogLevel log_level);
 
std::string stripSourceFileName(const std::string& file_name);
 
} // namespace logging
} // namespace helper