cjdns/util/log/Log.h

/* vim: set expandtab ts=4 sw=4: */
/*
 * You may redistribute this program and/or modify it under the terms of
 * the GNU General Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef Log_H
#define Log_H

#include "util/Gcc.h"
#include "util/Linker.h"
Linker_require("util/log/Log.c");

enum Log_Level
{
    Log_Level_KEYS,
    Log_Level_DEBUG,
    Log_Level_INFO,
    Log_Level_WARN,
    Log_Level_ERROR,
    Log_Level_CRITICAL,
    Log_Level_INVALID
};

struct Log;

char* Log_nameForLevel(enum Log_Level logLevel);

enum Log_Level Log_levelForName(char* name);

#ifdef Log_KEYS
    #define Log_DEBUG
#endif
#ifdef Log_DEBUG
    #define Log_INFO
#endif
#ifdef Log_INFO
    #define Log_WARN
#endif
#ifdef Log_WARN
    #define Log_ERROR
#endif
#ifdef Log_ERROR
    #define Log_CRITICAL
#endif

// Default
#ifndef Log_CRITICAL
    #define Log_INFO
    #define Log_WARN
    #define Log_ERROR
    #define Log_CRITICAL
#endif

Gcc_PRINTF(5,6)
void Log_print(struct Log* log,
               enum Log_Level logLevel,
               const char* file,
               int line,
               const char* format,
               ...);

#define Log_printf(log, level, ...) \
    do {                                                                   \
        if (log && level >= Log_MIN_LEVEL) {                               \
            Log_print(log, level, Gcc_SHORT_FILE, Gcc_LINE, __VA_ARGS__);  \
        }                                                                  \
    } while (0)
// CHECKFILES_IGNORE missing ;

#if defined(Log_KEYS)
    #define Log_MIN_LEVEL Log_Level_KEYS
#elif defined(Log_DEBUG)
    #define Log_MIN_LEVEL Log_Level_DEBUG
#elif defined(Log_INFO)
    #define Log_MIN_LEVEL Log_Level_INFO
#elif defined(Log_WARN)
    #define Log_MIN_LEVEL Log_Level_WARN
#elif defined(Log_ERROR)
    #define Log_MIN_LEVEL Log_Level_ERROR
#elif defined(Log_CRITICAL)
    #define Log_MIN_LEVEL Log_Level_CRITICAL
#else
    #error
#endif

#define Log_keys(log, ...)  Log_printf(log, Log_Level_KEYS, __VA_ARGS__)
#define Log_debug(log, ...) Log_printf(log, Log_Level_DEBUG, __VA_ARGS__)
#define Log_info(log, ...)  Log_printf(log, Log_Level_INFO, __VA_ARGS__)
#define Log_warn(log, ...)  Log_printf(log, Log_Level_WARN, __VA_ARGS__)
#define Log_error(log, ...) Log_printf(log, Log_Level_ERROR, __VA_ARGS__)
#define Log_critical(log, ...) Log_printf(log, Log_Level_CRITICAL, __VA_ARGS__)

#endif