util.c

   1 /* util functions */
   2
   3 /* Copyright (C) 2007 Keith Rarick and Philotic Inc.
   4
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <stdint.h>
  20 #include <errno.h>
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <stdarg.h>
  24 #include "dat.h"
  25
  26 const char *progname;
  27
  28 void
  29 v()
  30 {
  31 }
  32
  33 static void
  34 vwarnx(const char *err, const char *fmt, va_list args)
  35 {
  36     fprintf(stderr, "%s: ", progname);
  37     if (fmt) {
  38         vfprintf(stderr, fmt, args);
  39         if (err) fprintf(stderr, ": %s", err);
  40     }
  41     fputc('\n', stderr);
  42 }
  43
  44 void
  45 warn(const char *fmt, ...)
  46 {
  47     char *err = strerror(errno); /* must be done first thing */
  48     va_list args;
  49
  50     va_start(args, fmt);
  51     vwarnx(err, fmt, args);
  52     va_end(args);
  53 }
  54
  55 void
  56 warnx(const char *fmt, ...)
  57 {
  58     va_list args;
  59     va_start(args, fmt);
  60     vwarnx(NULL, fmt, args);
  61     va_end(args);
  62 }