log.c

   1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
   2
   3 #ifdef HAVE_CONFIG_H
   4 #include <config.h>
   5 #endif
   6
   7 #include <stdarg.h>
   8 #include <stdio.h>
   9 #include <errno.h>
  10
  11 #include "log.h"
  12
  13 void log_meta(
  14         int level,
  15         const char*file,
  16         int line,
  17         const char *func,
  18         const char *format, ...) {
  19
  20         const char *prefix, *suffix;
  21         va_list ap;
  22         int saved_errno = errno;
  23
  24         if (LOG_PRI(level) <= LOG_ERR) {
  25                 prefix = "\x1B[1;31m";
  26                 suffix = "\x1B[0m";
  27         } else {
  28                 prefix = "";
  29                 suffix = "";
  30         }
  31
  32         va_start(ap, format);
  33
  34         fprintf(stderr, "(%s:%u) %s", file, line, prefix);
  35         vfprintf(stderr, format, ap);
  36         fprintf(stderr, "%s\n", suffix);
  37
  38         va_end(ap);
  39
  40         errno = saved_errno;
  41 }