Function _cups_debug_printf

cups/debug.c:83–166

 */

void
_cups_debug_printf(const char *format,	/* I - Printf-style format string */
                   ...)			/* I - Additional arguments as needed */
{
  va_list		ap;		/* Pointer to arguments */
  struct timeval	curtime;	/* Current time */
  char			buffer[2048];	/* Output buffer */
  ssize_t		bytes;		/* Number of bytes in buffer */
  int			level;		/* Log level in message */
  int			myerrno = errno;/* Copy of errno value */


 /*
  * See if we need to do any logging...
  */

  if (!debug_init)
    _cups_debug_set(getenv("CUPS_DEBUG_LOG"), getenv("CUPS_DEBUG_LEVEL"),
                    getenv("CUPS_DEBUG_FILTER"), 0);

  if (_cups_debug_fd < 0)
    goto done;

 /*
  * Filter as needed...
  */

  if (isdigit(format[0]))
    level = *format++ - '0';
  else
    level = 0;

  if (level > _cups_debug_level)
    goto done;

  if (debug_filter)
  {
    int	result;				/* Filter result */

    _cupsMutexLock(&debug_init_mutex);
    result = regexec(debug_filter, format, 0, NULL, 0);
    _cupsMutexUnlock(&debug_init_mutex);

    if (result)
      goto done;
  }

 /*
  * Format the message...
  */

  gettimeofday(&curtime, NULL);
  snprintf(buffer, sizeof(buffer), "T%03d %02d:%02d:%02d.%03d  ",
           debug_thread_id(), (int)((curtime.tv_sec / 3600) % 24),
	   (int)((curtime.tv_sec / 60) % 60),
	   (int)(curtime.tv_sec % 60), (int)(curtime.tv_usec / 1000));

  va_start(ap, format);