xfreopen: new module, from coreutils

[gnulib.git] / lib / xfreopen.c

diff --git a/lib/xfreopen.c b/lib/xfreopen.c
new file mode 100644 (file)
index 0000000..32e68fa
--- /dev/null
+++ b/lib/xfreopen.c
@@ -0,0 +1,42 @@
+/* a wrapper for frepoen
+   Copyright (C) 2008-2009 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+#include "xfreopen.h"
+
+#include <errno.h>
+#include "error.h"
+#include "exitfail.h"
+#include "quote.h"
+#include "stdio--.h"
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+void
+xfreopen (char const *filename, char const *mode, FILE *fp)
+{
+  if (!freopen (filename, mode, fp))
+    {
+      char const *f = (filename ? filename
+                       : (fp == stdin ? _("stdin")
+                          : (fp == stdout ? _("stdout")
+                             : (fp == stderr ? _("stderr")
+                                : _("unknown stream")))));
+      error (exit_failure, errno, _("failed to reopen %s with mode %s"),
+             quote_n (0, f), quote_n (1, mode));
+    }
+}