88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/* $NetBSD: asctime.c,v 1.11 2000/09/13 22:32:28 msaitoh Exp $ */
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/*
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** This file is in the public domain, so clarified as of
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** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char elsieid[] = "@(#)asctime.c 7.9";
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#else
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__RCSID("$NetBSD: asctime.c,v 1.11 2000/09/13 22:32:28 msaitoh Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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/*LINTLIBRARY*/
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#include "namespace.h"
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#include "private.h"
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#include "tzfile.h"
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#ifdef __weak_alias
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__weak_alias(asctime_r,_asctime_r)
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#endif
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/*
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** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, Second Edition, 1996-07-12.
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*/
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/*
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** Big enough for something such as
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** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n
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** (two three-character abbreviations, five strings denoting integers,
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** three explicit spaces, two explicit colons, a newline,
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** and a trailing ASCII nul).
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*/
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#define ASCTIME_BUFLEN (3 * 2 + 5 * INT_STRLEN_MAXIMUM(int) + 3 + 2 + 1 + 1)
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char *
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asctime_r(timeptr, buf)
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register const struct tm * timeptr;
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char * buf;
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{
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static const char wday_name[][3] = {
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"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
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};
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static const char mon_name[][3] = {
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"Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
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};
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register const char * wn;
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register const char * mn;
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if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK)
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wn = "???";
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else wn = wday_name[timeptr->tm_wday];
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if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR)
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mn = "???";
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else mn = mon_name[timeptr->tm_mon];
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/*
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** The X3J11-suggested format is
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** "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n"
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** Since the .2 in 02.2d is ignored, we drop it.
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*/
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(void)snprintf(buf,
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sizeof (char[ASCTIME_BUFLEN]),
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"%.3s %.3s%3d %02d:%02d:%02d %d\n",
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wn, mn,
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timeptr->tm_mday, timeptr->tm_hour,
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timeptr->tm_min, timeptr->tm_sec,
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TM_YEAR_BASE + timeptr->tm_year);
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return buf;
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}
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/*
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** A la X3J11, with core dump avoidance.
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*/
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char *
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asctime(timeptr)
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register const struct tm * timeptr;
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{
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static char result[ASCTIME_BUFLEN];
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return asctime_r(timeptr, result);
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}
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