lib/xfreopen.c

   1 /* a wrapper for freopen
   2    Copyright (C) 2008-2018 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18 #include "xfreopen.h"
  19
  20 #include <errno.h>
  21 #include "error.h"
  22 #include "exitfail.h"
  23 #include "quote.h"
  24 #include "stdio--.h"
  25
  26 #include "gettext.h"
  27 #define _(msgid) gettext (msgid)
  28
  29 void
  30 xfreopen (char const *filename, char const *mode, FILE *fp)
  31 {
  32   if (!freopen (filename, mode, fp))
  33     {
  34       char const *f = (filename ? filename
  35                        : (fp == stdin ? _("stdin")
  36                           : (fp == stdout ? _("stdout")
  37                              : (fp == stderr ? _("stderr")
  38                                 : _("unknown stream")))));
  39       error (exit_failure, errno, _("failed to reopen %s with mode %s"),
  40              quote_n (0, f), quote_n (1, mode));
  41     }
  42 }