/* Copyright (C) 2014-2015 Ben Kurtovic <ben.kurtovic@gmail.com>
   Released under the terms of the MIT License. See LICENSE for details. */

#pragma once

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

/* Internal usage only */

#define LOG_MSG(level, extra, tail, after, ...) { \
        fprintf(stderr, level ": " __VA_ARGS__);  \
        extra;                                    \
        fprintf(stderr, tail ? ".\n" : "\n");     \
        after;                                    \
    }
#define PRINT_ERRNO() fprintf(stderr, ": %s", strerror(errno))

/* Public logging macros */

#define FATAL(...)       LOG_MSG("Error",   {},            1, exit(EXIT_FAILURE), __VA_ARGS__)
#define FATAL_ERRNO(...) LOG_MSG("Error",   PRINT_ERRNO(), 1, exit(EXIT_FAILURE), __VA_ARGS__)
#define ERROR(...)       LOG_MSG("Error",   {},            1, {},                 __VA_ARGS__)
#define ERROR_ERRNO(...) LOG_MSG("Error",   PRINT_ERRNO(), 1, {},                 __VA_ARGS__)
#define WARN(...)        LOG_MSG("Warning", {},            1, {},                 __VA_ARGS__)
#define WARN_ERRNO(...)  LOG_MSG("Warning", PRINT_ERRNO(), 1, {},                 __VA_ARGS__)

#ifdef DEBUG_MODE
#define DEBUG(...)       LOG_MSG("[DEBUG]", {},            0, {},                 __VA_ARGS__)
#define DEBUG_ERRNO(...) LOG_MSG("[DEBUG]", PRINT_ERRNO(), 0, {},                 __VA_ARGS__)
#endif

#define OUT_OF_MEMORY() FATAL("couldn't allocate enough memory")