/*
 * Log related functions/defines.
 *
 * Copyright (C) 2011  Simon Ruderich
 *
 * This program is free software: you can redistribute it 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

/* Log level constants. */
#define LOG_ERROR   0
#define LOG_WARNING 1
#define LOG_DEBUG   2

/* Helper macro for LOG/LOG_PERROR. Print file/line number if compiled with
 * debug output. */
#ifdef DEBUG
#define LOG_PRINT_LOCATION fprintf(stdout, "%s:%-3d ", __FILE__, __LINE__);
#else
#define LOG_PRINT_LOCATION
#endif
/* Call log_message() and print current file and line number. */
#define LOG \
    LOG_PRINT_LOCATION \
    log_message
/* perror() replacement with debug level support. */
#define LOG_PERROR(level, message) \
    LOG_PRINT_LOCATION \
    log_message(level, "%s: %s", message, strerror(errno))


void log_message(int level, const char *format, ...);

#endif