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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /time/asctime.c
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initial import
Diffstat (limited to 'time/asctime.c')
-rw-r--r--time/asctime.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/time/asctime.c b/time/asctime.c
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--- /dev/null
+++ b/time/asctime.c
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+/* Copyright (C) 1991, 1993 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <localeinfo.h>
+#include <errno.h>
+#include <stdio.h>
+#include <time.h>
+
+
+/* Returns a string of the form "Day Mon dd hh:mm:ss yyyy\n"
+   which is the representation of TP in that form.  */
+char *
+DEFUN(asctime, (tp), CONST struct tm *tp)
+{
+  static const char format[] = "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n";
+  static char result[	         3+1+ 3+1+20+1+20+1+20+1+20+1+20+1 + 1];
+
+  if (tp == NULL)
+    {
+      errno = EINVAL;
+      return NULL;
+    }
+  
+  if (sprintf (result, format,
+	       (tp->tm_wday < 0 || tp->tm_wday >= 7 ?
+		"???" : _time_info->abbrev_wkday[tp->tm_wday]),
+	       (tp->tm_mon < 0 || tp->tm_mon >= 12 ?
+		"???" : _time_info->abbrev_month[tp->tm_mon]),
+	       tp->tm_mday, tp->tm_hour, tp->tm_min,
+	       tp->tm_sec, 1900 + tp->tm_year) < 0)
+    return NULL;
+
+  return result;
+}