the logs now include a timestamp and severity

/*

 * Changes :

 * $Log$

 * Revision 1.3  2002/09/04 00:39:33  arma

 * the logs now include a timestamp and severity

 *

 * the implementation is sort of a kludge..you're welcome to fix it up

 *

 * Revision 1.2  2002/07/12 18:14:16  montrose

 * removed loglevel from global namespace. severity level is set using log() with a NULL format argument now. example: log(LOG_ERR,NULL);

 *

#include <syslog.h>

#include <string.h>

#include <errno.h>

#include <assert.h>

#include <time.h>

#include "log.h"

/* FIXME this whole thing is hacked together. feel free to make it clean. */

size_t sev_to_string(char *buf, int max, int severity) {

  assert(max > 20);

  switch(severity) {

    case LOG_DEBUG:

      strcpy(buf,"debug");  

      break;

    case LOG_INFO:

      strcpy(buf,"info");

      break;

    case LOG_NOTICE:

      strcpy(buf,"notice");

      break;

    case LOG_WARNING:

      strcpy(buf,"warn");

      break;

    case LOG_ERR:

      strcpy(buf,"err");

      break;

    case LOG_CRIT:

      strcpy(buf,"crit");

      break;

    case LOG_ALERT:

      strcpy(buf,"alert");

      break;

    case LOG_EMERG: 

      strcpy(buf,"emerg");

      break;

    default:

      strcpy(buf,"UNKNOWN");

      break;

  }

  return strlen(buf)+1;

}

/* Outputs a message to stdout */

void log(int severity, const char *format, ...)

{

  static int loglevel = LOG_DEBUG;

  char buf[201];

  time_t t;

  va_list ap;

  if ( format )

    if (severity <= loglevel)

    {

      t = time(NULL);

      strftime(buf, 200, "%b %d %H:%M:%S", localtime(&t));

      printf("%s ", buf);

      sev_to_string(buf, 200, severity);

      printf("[%s] ", buf);

      vprintf(format,ap);

      printf("\n");

    }

  else

    loglevel = severity;

}