from gnulib

1 files changed, 69 insertions, 0 deletions

diff --git a/lib/time_r.c b/lib/time_r.c
new file mode 100644
index 000000000..6c4250412
--- /dev/null
+++ b/lib/time_r.c
@@ -0,0 +1,69 @@
+/* Reentrant time functions like localtime_r.
+
+   Copyright (C) 2003 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 2, 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, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/* Written by Paul Eggert.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "time_r.h"
+
+#include <string.h>
+
+static char *
+copy_string_result (char *dest, char const *src)
+{
+  if (! src)
+    return 0;
+  return strcpy (dest, src);
+}
+
+static struct tm *
+copy_tm_result (struct tm *dest, struct tm const *src)
+{
+  if (! src)
+    return 0;
+  *dest = *src;
+  return dest;
+}
+
+
+char *
+asctime_r (struct tm const * restrict tm, char * restrict buf)
+{
+  return copy_string_result (buf, asctime (tm));
+}
+
+char *
+ctime_r (time_t const *t, char *buf)
+{
+  return copy_string_result (buf, ctime (t));
+}
+
+struct tm *
+gmtime_r (time_t const * restrict t, struct tm * restrict tp)
+{
+  return copy_tm_result (tp, gmtime (t));
+}
+
+struct tm *
+localtime_r (time_t const * restrict t, struct tm * restrict tp)
+{
+  return copy_tm_result (tp, localtime (t));
+}