C++11 tracing utility

main.cpp

#include "trace_util.hpp"

/** To build under gcc:
 * g++ main.cpp -stdc=c++11
 */

auto main() -> int
{
    TRACE("I would love some %f\n", 3.1415);
    ERROR("Some error %d\n", 42);
    NOTIFY("Somebody notice me\n");
}

trace_util.hpp

#if __cplusplus < 201103L
#error "The tracing utility depends on C++11 language features"
#endif

#include <stdio.h>

/**
 * This file is a simple C++11 tracing utility that traces with color. I
 * created it mainly to use variadic template class feature
 */

#define TRACE(...) trace_func(__FILE__, __LINE__, COLOR_GREEN, ##__VA_ARGS__)
#define ERROR(...) trace_func(__FILE__, __LINE__, COLOR_RED, ##__VA_ARGS__)
#define NOTIFY(...) trace_func(__FILE__, __LINE__, COLOR_BG_GRAY, ##__VA_ARGS__)

#define COLOR_RED "\033[91m"
#define COLOR_GREEN "\033[92m"
#define COLOR_BG_GRAY "\033[100m"
#define COLOR_END "\033[0m"

template<typename... Args>
auto inline trace_func(char const* file,
                       const int line,
                       char const* color,
                       char const * format,
                       Args... args) -> void
{
    #define PREFORMAT "%s>> %s[%d]: "

    fprintf(stderr, PREFORMAT, color, file, line);
    #pragma GCC diagnostic ignored "-Wformat-security"
    fprintf(stderr, format, args...);
    #pragma GCC diagnostic pop
    fprintf(stderr, COLOR_END);
}