#ifndef LOGMSG_H
#define LOGMSG_H

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

#include "error.h"

extern void logmsg(const char *who, int ecode, unsigned int class, const char *msg);

/* useful combinations of params */
/* class: FATAL (hard) - system error */
#define err_sys(w, e)         logmsg(w, e, FATAL, "")
#define err_sys_plus(w, e, m) logmsg(w, e, FATAL, m)
/* class: WARN (application) - temporary error */
#define err_tmp(w, e, m)      logmsg(w, e, WARN, m)
#define err_tmp_plus(w, e, m) logmsg(w, e, WARN, m)
/* class: facultative ('int'ernal definition */
#define err_int(w, e, c)         logmsg(w, e, c, "")
#define err_int_plus(w, e, c, m) logmsg(w, e, c, m)
/* log messages */
/* #define log(w,m) logmsg(w,0,LOG,m) // obsoleted by */
#define log_who(w, m) logmsg(w, 0, LOG, m)
#define log_anon(m)   logmsg("", 0, LOG, m)
#define log_cat(n)    logmsg("", 0, CAT, m)

/* build log message from multiple partial strings */
extern char *build_log_msg(const char *[]);
#define B(...) build_log_msg((const char *[]){__VA_ARGS__, NULL})  // K/R sect. 7.3

#endif