/*
    slog.h -- logging
    Copyright (C) 2003 Marc Lehmann <pcg@goof.com>
 
    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 2 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, write to the Free Software
    Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#ifndef SLOG_H__
#define SLOG_H__

enum loglevel {
  L_NONE,
  L_NOISE,
  L_TRACE,
  L_DEBUG,
  L_INFO,
  L_NOTICE,
  L_WARN,
  L_ERR,
  L_CRIT
};

enum {
  LOGTO_SYSLOG = 1,
  LOGTO_STDERR = 2
};

extern loglevel log_level;
extern const char *log_identity;

extern loglevel string_to_loglevel (const char *s);
#define UNKNOWN_LOGLEVEL _("unknown loglevel, try 'noise', 'debug', 'info', 'notice', 'warn', 'error' or 'critical'")

inline void set_loglevel (const loglevel l)
{
  log_level = l;
}

inline loglevel get_loglevel ()
{
  return log_level;
}

inline void set_identity (const char *identname)
{
  log_identity = identname;
}

inline const char *get_identity ()
{
  return log_identity;
}

extern void log_to (int mask);

extern void slog_ (const loglevel l, const char *m, ...);

#if __GNUC__ > 2
# define slog(l, ...) do { if ((l) >= log_level) slog_ (l, __VA_ARGS__); } while (0)
#else
# define slog slog_
#endif

extern void fatal (const char *m);
extern void require_failed (const char *file, int line, const char *info);

#define require(expr) if (!(expr)) require_failed (__FILE__,  __LINE__, #expr)

#endif