Libc-498.tar.gz

[apple/libc.git] / stdtime / asctime-fbsd.c

diff --git a/stdtime/asctime-fbsd.c b/stdtime/asctime-fbsd.c
new file mode 100644 (file)
index 0000000..bcdc85e
--- /dev/null
+++ b/stdtime/asctime-fbsd.c
@@ -0,0 +1,76 @@
+/*
+** This file is in the public domain, so clarified as of
+** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
+*/
+
+#include <sys/cdefs.h>
+#ifndef lint
+#ifndef NOID
+static char    elsieid[] __unused = "@(#)asctime.c     7.9";
+#endif /* !defined NOID */
+#endif /* !defined lint */
+__FBSDID("$FreeBSD: src/lib/libc/stdtime/asctime.c,v 1.12 2004/06/14 10:31:52 stefanf Exp $");
+
+/*LINTLIBRARY*/
+
+#include "namespace.h"
+#include "private.h"
+#include "un-namespace.h"
+#include "tzfile.h"
+
+/*
+** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, Second Edition, 1996-07-12.
+*/
+
+char *
+asctime_r(const struct tm * __restrict timeptr, char * __restrict buf)
+{
+       static const char       wday_name[][3] = {
+               "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+       };
+       static const char       mon_name[][3] = {
+               "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+               "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+       };
+       const char *    wn;
+       const char *    mn;
+
+       if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK)
+               wn = "???";
+       else    wn = wday_name[timeptr->tm_wday];
+       if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR)
+               mn = "???";
+       else    mn = mon_name[timeptr->tm_mon];
+       /*
+       ** The X3J11-suggested format is
+       **      "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n"
+       ** Since the .2 in 02.2d is ignored, we drop it.
+       */
+       (void) sprintf(buf, "%.3s %.3s%3d %02d:%02d:%02d %d\n",
+               wn, mn,
+               timeptr->tm_mday, timeptr->tm_hour,
+               timeptr->tm_min, timeptr->tm_sec,
+               TM_YEAR_BASE + timeptr->tm_year);
+       return buf;
+}
+
+/*
+** A la X3J11, with core dump avoidance.
+*/
+
+char *
+asctime(timeptr)
+const struct tm *      timeptr;
+{
+       /*
+       ** Big enough for something such as
+       ** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n
+       ** (two three-character abbreviations, five strings denoting integers,
+       ** three explicit spaces, two explicit colons, a newline,
+       ** and a trailing ASCII nul).
+       */
+       static char             result[3 * 2 + 5 * INT_STRLEN_MAXIMUM(int) +
+                                       3 + 2 + 1 + 1];
+
+       return asctime_r(timeptr, result);
+}