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-/*
- * strftime.c
- *
- * Public-domain implementation of ANSI C library routine.
- *
- * It's written in old-style C for maximal portability.
- * However, since I'm used to prototypes, I've included them too.
- *
- * If you want stuff in the System V ascftime routine, add the SYSV_EXT define.
- * For extensions from SunOS, add SUNOS_EXT.
- * For stuff needed to implement the P1003.2 date command, add POSIX2_DATE.
- * For VMS dates, add VMS_EXT.
- * For a an RFC822 time format, add MAILHEADER_EXT.
- * For ISO week years, add ISO_DATE_EXT.
- * For complete POSIX semantics, add POSIX_SEMANTICS.
- *
- * The code for %c, %x, and %X now follows the 1003.2 specification for
- * the POSIX locale.
- * This version ignores LOCALE information.
- * It also doesn't worry about multi-byte characters.
- * So there.
- *
- * This file is also shipped with GAWK (GNU Awk), gawk specific bits of
- * code are included if GAWK is defined.
- *
- * Arnold Robbins
- * January, February, March, 1991
- * Updated March, April 1992
- * Updated April, 1993
- * Updated February, 1994
- * Updated May, 1994
- * Updated January, 1995
- * Updated September, 1995
- * Updated January, 1996
- *
- * Fixes from ado@elsie.nci.nih.gov
- * February 1991, May 1992
- * Fixes from Tor Lillqvist tml@tik.vtt.fi
- * May, 1993
- * Further fixes from ado@elsie.nci.nih.gov
- * February 1994
- * %z code from chip@chinacat.unicom.com
- * Applied September 1995
- * %V code fixed (again) and %G, %g added,
- * January 1996
- */
-
-#include "config.h"
-
-#ifndef GAWK
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-#include <time.h>
-#endif
-#if defined(TM_IN_SYS_TIME) || !defined(GAWK) && !defined(_WIN32_WCE)
-#include <sys/types.h>
-#include <sys/time.h>
-#endif
-
-/* defaults: season to taste */
-#define SYSV_EXT 1 /* stuff in System V ascftime routine */
-#define SUNOS_EXT 1 /* stuff in SunOS strftime routine */
-#define POSIX2_DATE 1 /* stuff in Posix 1003.2 date command */
-#define VMS_EXT 1 /* include %v for VMS date format */
-#define MAILHEADER_EXT 1 /* add %z for HHMM format */
-#define ISO_DATE_EXT 1 /* %G and %g for year of ISO week */
-#ifndef GAWK
-#define POSIX_SEMANTICS 1 /* call tzset() if TZ changes */
-#endif
-
-#if defined(ISO_DATE_EXT)
-#if ! defined(POSIX2_DATE)
-#define POSIX2_DATE 1
-#endif
-#endif
-
-#if defined(POSIX2_DATE)
-#if ! defined(SYSV_EXT)
-#define SYSV_EXT 1
-#endif
-#if ! defined(SUNOS_EXT)
-#define SUNOS_EXT 1
-#endif
-#endif
-
-#if defined(POSIX2_DATE)
-#define adddecl(stuff) stuff
-#else
-#define adddecl(stuff)
-#endif
-
-#undef strchr /* avoid AIX weirdness */
-
-#ifndef __STDC__
-#define const /**/
-extern void tzset();
-static int weeknumber();
-adddecl(static int iso8601wknum();)
-#else
-extern void tzset(void);
-static int weeknumber(const struct tm *timeptr, int firstweekday);
-adddecl(static int iso8601wknum(const struct tm *timeptr);)
-#endif
-
-#ifdef STDC_HEADERS
-#include <stdlib.h>
-#include <string.h>
-#else
-extern void *malloc();
-extern void *realloc();
-extern char *getenv();
-extern char *strchr();
-#endif
-
-#define range(low, item, hi) max(low, min(item, hi))
-
-#if !defined(OS2) && !defined(MSDOS) && defined(HAVE_TZNAME)
-extern char *tzname[2];
-extern int daylight;
-#ifdef SOLARIS
-extern long timezone, altzone;
-#else
-#ifdef __hpux
-extern long timezone;
-#else
-extern int timezone, altzone;
-#endif
-#endif
-#endif
-
-#undef min /* just in case */
-
-/* min --- return minimum of two numbers */
-
-#ifndef __STDC__
-static inline int
-min(a, b)
-int a, b;
-#else
-static inline int
-min(int a, int b)
-#endif
-{
- return (a < b ? a : b);
-}
-
-#undef max /* also, just in case */
-
-/* max --- return maximum of two numbers */
-
-#ifndef __STDC__
-static inline int
-max(a, b)
-int a, b;
-#else
-static inline int
-max(int a, int b)
-#endif
-{
- return (a > b ? a : b);
-}
-
-/* strftime --- produce formatted time */
-
-#ifndef __STDC__
-size_t
-strftime(s, maxsize, format, timeptr)
-char *s;
-size_t maxsize;
-const char *format;
-const struct tm *timeptr;
-#else
-size_t
-strftime(char *s, size_t maxsize, const char *format, const struct tm *timeptr)
-#endif
-{
- char *endp = s + maxsize;
- char *start = s;
- auto char tbuf[100];
- long off;
- int i, w;
- long y;
- static short first = 1;
-#ifdef POSIX_SEMANTICS
- static char *savetz = NULL;
- static int savetzlen = 0;
- char *tz;
-#endif /* POSIX_SEMANTICS */
-#ifndef HAVE_TM_ZONE
-#ifndef HAVE_TM_NAME
-#ifndef HAVE_TZNAME
- extern char *timezone();
- struct timeval tv;
- struct timezone zone;
-#else
-#ifdef __hpux
- struct timeval tv;
- struct timezone zone;
-#endif
-#endif /* HAVE_TZNAME */
-#endif /* HAVE_TM_NAME */
-#endif /* HAVE_TM_ZONE */
-
- /* various tables, useful in North America */
- static const char *days_a[] = {
- "Sun", "Mon", "Tue", "Wed",
- "Thu", "Fri", "Sat",
- };
- static const char *days_l[] = {
- "Sunday", "Monday", "Tuesday", "Wednesday",
- "Thursday", "Friday", "Saturday",
- };
- static const char *months_a[] = {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
- };
- static const char *months_l[] = {
- "January", "February", "March", "April",
- "May", "June", "July", "August", "September",
- "October", "November", "December",
- };
- static const char *ampm[] = { "AM", "PM", };
-
- if (s == NULL || format == NULL || timeptr == NULL || maxsize == 0)
- return 0;
-
- /* quick check if we even need to bother */
- if (strchr(format, '%') == NULL && strlen(format) + 1 >= maxsize)
- return 0;
-
-#ifndef POSIX_SEMANTICS
- if (first) {
- tzset();
- first = 0;
- }
-#else /* POSIX_SEMANTICS */
- tz = getenv("TZ");
- if (first) {
- if (tz != NULL) {
- int tzlen = strlen(tz);
-
- savetz = (char *) malloc(tzlen + 1);
- if (savetz != NULL) {
- savetzlen = tzlen + 1;
- strcpy(savetz, tz);
- }
- }
- tzset();
- first = 0;
- }
- /* if we have a saved TZ, and it is different, recapture and reset */
- if (tz && savetz && (tz[0] != savetz[0] || strcmp(tz, savetz) != 0)) {
- i = strlen(tz) + 1;
- if (i > savetzlen) {
- savetz = (char *) realloc(savetz, i);
- if (savetz) {
- savetzlen = i;
- strcpy(savetz, tz);
- }
- } else
- strcpy(savetz, tz);
- tzset();
- }
-#endif /* POSIX_SEMANTICS */
-
- for (; *format && s < endp - 1; format++) {
- tbuf[0] = '\0';
- if (*format != '%') {
- *s++ = *format;
- continue;
- }
- again:
- switch (*++format) {
- case '\0':
- *s++ = '%';
- goto out;
-
- case '%':
- *s++ = '%';
- continue;
-
- case 'a': /* abbreviated weekday name */
- if (timeptr->tm_wday < 0 || timeptr->tm_wday > 6)
- strcpy(tbuf, "?");
- else
- strcpy(tbuf, days_a[timeptr->tm_wday]);
- break;
-
- case 'A': /* full weekday name */
- if (timeptr->tm_wday < 0 || timeptr->tm_wday > 6)
- strcpy(tbuf, "?");
- else
- strcpy(tbuf, days_l[timeptr->tm_wday]);
- break;
-
-#ifdef SYSV_EXT
- case 'h': /* abbreviated month name */
-#endif
- case 'b': /* abbreviated month name */
- if (timeptr->tm_mon < 0 || timeptr->tm_mon > 11)
- strcpy(tbuf, "?");
- else
- strcpy(tbuf, months_a[timeptr->tm_mon]);
- break;
-
- case 'B': /* full month name */
- if (timeptr->tm_mon < 0 || timeptr->tm_mon > 11)
- strcpy(tbuf, "?");
- else
- strcpy(tbuf, months_l[timeptr->tm_mon]);
- break;
-
- case 'c': /* appropriate date and time representation */
- strftime(tbuf, sizeof tbuf, "%a %b %e %H:%M:%S %Y", timeptr);
- break;
-
- case 'd': /* day of the month, 01 - 31 */
- i = range(1, timeptr->tm_mday, 31);
- sprintf(tbuf, "%02d", i);
- break;
-
- case 'H': /* hour, 24-hour clock, 00 - 23 */
- i = range(0, timeptr->tm_hour, 23);
- sprintf(tbuf, "%02d", i);
- break;
-
- case 'I': /* hour, 12-hour clock, 01 - 12 */
- i = range(0, timeptr->tm_hour, 23);
- if (i == 0)
- i = 12;
- else if (i > 12)
- i -= 12;
- sprintf(tbuf, "%02d", i);
- break;
-
- case 'j': /* day of the year, 001 - 366 */
- sprintf(tbuf, "%03d", timeptr->tm_yday + 1);
- break;
-
- case 'm': /* month, 01 - 12 */
- i = range(0, timeptr->tm_mon, 11);
- sprintf(tbuf, "%02d", i + 1);
- break;
-
- case 'M': /* minute, 00 - 59 */
- i = range(0, timeptr->tm_min, 59);
- sprintf(tbuf, "%02d", i);
- break;
-
- case 'p': /* am or pm based on 12-hour clock */
- i = range(0, timeptr->tm_hour, 23);
- if (i < 12)
- strcpy(tbuf, ampm[0]);
- else
- strcpy(tbuf, ampm[1]);
- break;
-
- case 'S': /* second, 00 - 60 */
- i = range(0, timeptr->tm_sec, 60);
- sprintf(tbuf, "%02d", i);
- break;
-
- case 'U': /* week of year, Sunday is first day of week */
- sprintf(tbuf, "%02d", weeknumber(timeptr, 0));
- break;
-
- case 'w': /* weekday, Sunday == 0, 0 - 6 */
- i = range(0, timeptr->tm_wday, 6);
- sprintf(tbuf, "%d", i);
- break;
-
- case 'W': /* week of year, Monday is first day of week */
- sprintf(tbuf, "%02d", weeknumber(timeptr, 1));
- break;
-
- case 'x': /* appropriate date representation */
- strftime(tbuf, sizeof tbuf, "%m/%d/%y", timeptr);
- break;
-
- case 'X': /* appropriate time representation */
- strftime(tbuf, sizeof tbuf, "%H:%M:%S", timeptr);
- break;
-
- case 'y': /* year without a century, 00 - 99 */
- i = timeptr->tm_year % 100;
- sprintf(tbuf, "%02d", i);
- break;
-
- case 'Y': /* year with century */
- sprintf(tbuf, "%ld", 1900L + timeptr->tm_year);
- break;
-
-#ifdef MAILHEADER_EXT
- /*
- * From: Chip Rosenthal <chip@chinacat.unicom.com>
- * Date: Sun, 19 Mar 1995 00:33:29 -0600 (CST)
- *
- * Warning: the %z [code] is implemented by inspecting the
- * timezone name conditional compile settings, and
- * inferring a method to get timezone offsets. I've tried
- * this code on a couple of machines, but I don't doubt
- * there is some system out there that won't like it.
- * Maybe the easiest thing to do would be to bracket this
- * with an #ifdef that can turn it off. The %z feature
- * would be an admittedly obscure one that most folks can
- * live without, but it would be a great help to those of
- * us that muck around with various message processors.
- */
- case 'z': /* time zone offset east of GMT e.g. -0600 */
-#ifdef HAVE_TM_NAME
- /*
- * Systems with tm_name probably have tm_tzadj as
- * secs west of GMT. Convert to mins east of GMT.
- */
- off = -timeptr->tm_tzadj / 60;
-#else /* !HAVE_TM_NAME */
-#ifdef HAVE_TM_ZONE
- /*
- * Systems with tm_zone probably have tm_gmtoff as
- * secs east of GMT. Convert to mins east of GMT.
- */
- off = timeptr->tm_gmtoff / 60;
-#else /* !HAVE_TM_ZONE */
-#if HAVE_TZNAME
- /*
- * Systems with tzname[] probably have timezone as
- * secs west of GMT. Convert to mins east of GMT.
- */
-#ifdef __hpux
- gettimeofday(&tv, &zone);
- off = -zone.tz_minuteswest;
-#else
- off = -(daylight ? timezone : altzone) / 60;
-#endif
-#else /* !HAVE_TZNAME */
- gettimeofday(&tv, &zone);
- off = -zone.tz_minuteswest;
-#endif /* !HAVE_TZNAME */
-#endif /* !HAVE_TM_ZONE */
-#endif /* !HAVE_TM_NAME */
- if (off < 0) {
- tbuf[0] = '-';
- off = -off;
- } else {
- tbuf[0] = '+';
- }
- sprintf(tbuf+1, "%02d%02d", off/60, off%60);
- break;
-#endif /* MAILHEADER_EXT */
-
- case 'Z': /* time zone name or abbrevation */
-#ifdef HAVE_TZNAME
- i = (daylight && timeptr->tm_isdst > 0); /* 0 or 1 */
- strcpy(tbuf, tzname[i]);
-#else
-#ifdef HAVE_TM_ZONE
- strcpy(tbuf, timeptr->tm_zone);
-#else
-#ifdef HAVE_TM_NAME
- strcpy(tbuf, timeptr->tm_name);
-#else
- gettimeofday(& tv, & zone);
-#ifdef __CYGWIN__
- strcpy(tbuf, timezone());
-#else
- strcpy(tbuf, timezone(zone.tz_minuteswest,
- timeptr->tm_isdst > 0));
-#endif
-#endif /* HAVE_TM_NAME */
-#endif /* HAVE_TM_ZONE */
-#endif /* HAVE_TZNAME */
- break;
-
-#ifdef SYSV_EXT
- case 'n': /* same as \n */
- tbuf[0] = '\n';
- tbuf[1] = '\0';
- break;
-
- case 't': /* same as \t */
- tbuf[0] = '\t';
- tbuf[1] = '\0';
- break;
-
- case 'D': /* date as %m/%d/%y */
- strftime(tbuf, sizeof tbuf, "%m/%d/%y", timeptr);
- break;
-
- case 'e': /* day of month, blank padded */
- sprintf(tbuf, "%2d", range(1, timeptr->tm_mday, 31));
- break;
-
- case 'r': /* time as %I:%M:%S %p */
- strftime(tbuf, sizeof tbuf, "%I:%M:%S %p", timeptr);
- break;
-
- case 'R': /* time as %H:%M */
- strftime(tbuf, sizeof tbuf, "%H:%M", timeptr);
- break;
-
- case 'T': /* time as %H:%M:%S */
- strftime(tbuf, sizeof tbuf, "%H:%M:%S", timeptr);
- break;
-#endif
-
-#ifdef SUNOS_EXT
- case 'k': /* hour, 24-hour clock, blank pad */
- sprintf(tbuf, "%2d", range(0, timeptr->tm_hour, 23));
- break;
-
- case 'l': /* hour, 12-hour clock, 1 - 12, blank pad */
- i = range(0, timeptr->tm_hour, 23);
- if (i == 0)
- i = 12;
- else if (i > 12)
- i -= 12;
- sprintf(tbuf, "%2d", i);
- break;
-#endif
-
-
-#ifdef VMS_EXT
- case 'v': /* date as dd-bbb-YYYY */
- sprintf(tbuf, "%2d-%3.3s-%4ld",
- range(1, timeptr->tm_mday, 31),
- months_a[range(0, timeptr->tm_mon, 11)],
- timeptr->tm_year + 1900L);
- for (i = 3; i < 6; i++)
- if (islower(tbuf[i]))
- tbuf[i] = toupper(tbuf[i]);
- break;
-#endif
-
-
-#ifdef POSIX2_DATE
- case 'C':
- sprintf(tbuf, "%02ld", (timeptr->tm_year + 1900L) / 100);
- break;
-
-
- case 'E':
- case 'O':
- /* POSIX locale extensions, ignored for now */
- goto again;
-
- case 'V': /* week of year according ISO 8601 */
- sprintf(tbuf, "%02d", iso8601wknum(timeptr));
- break;
-
- case 'u':
- /* ISO 8601: Weekday as a decimal number [1 (Monday) - 7] */
- sprintf(tbuf, "%d", timeptr->tm_wday == 0 ? 7 :
- timeptr->tm_wday);
- break;
-#endif /* POSIX2_DATE */
-
-#ifdef ISO_DATE_EXT
- case 'G':
- case 'g':
- /*
- * Year of ISO week.
- *
- * If it's December but the ISO week number is one,
- * that week is in next year.
- * If it's January but the ISO week number is 52 or
- * 53, that week is in last year.
- * Otherwise, it's this year.
- */
- w = iso8601wknum(timeptr);
- if (timeptr->tm_mon == 11 && w == 1)
- y = 1900L + timeptr->tm_year + 1;
- else if (timeptr->tm_mon == 0 && w >= 52)
- y = 1900L + timeptr->tm_year - 1;
- else
- y = 1900L + timeptr->tm_year;
-
- if (*format == 'G')
- sprintf(tbuf, "%ld", y);
- else
- sprintf(tbuf, "%02ld", y % 100);
- break;
-#endif /* ISO_DATE_EXT */
- default:
- tbuf[0] = '%';
- tbuf[1] = *format;
- tbuf[2] = '\0';
- break;
- }
- i = strlen(tbuf);
- if (i) {
- if (s + i < endp - 1) {
- strcpy(s, tbuf);
- s += i;
- } else
- return 0;
- }
- }
-out:
- if (s < endp && *format == '\0') {
- *s = '\0';
- return (s - start);
- } else
- return 0;
-}
-
-/* isleap --- is a year a leap year? */
-
-#ifndef __STDC__
-static int
-isleap(year)
-long year;
-#else
-static int
-isleap(long year)
-#endif
-{
- return ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0);
-}
-
-
-#ifdef POSIX2_DATE
-/* iso8601wknum --- compute week number according to ISO 8601 */
-
-#ifndef __STDC__
-static int
-iso8601wknum(timeptr)
-const struct tm *timeptr;
-#else
-static int
-iso8601wknum(const struct tm *timeptr)
-#endif
-{
- /*
- * From 1003.2:
- * If the week (Monday to Sunday) containing January 1
- * has four or more days in the new year, then it is week 1;
- * otherwise it is the highest numbered week of the previous
- * year (52 or 53), and the next week is week 1.
- *
- * ADR: This means if Jan 1 was Monday through Thursday,
- * it was week 1, otherwise week 52 or 53.
- *
- * XPG4 erroneously included POSIX.2 rationale text in the
- * main body of the standard. Thus it requires week 53.
- */
-
- int weeknum, jan1day, diff;
-
- /* get week number, Monday as first day of the week */
- weeknum = weeknumber(timeptr, 1);
-
- /*
- * With thanks and tip of the hatlo to tml@tik.vtt.fi
- *
- * What day of the week does January 1 fall on?
- * We know that
- * (timeptr->tm_yday - jan1.tm_yday) MOD 7 ==
- * (timeptr->tm_wday - jan1.tm_wday) MOD 7
- * and that
- * jan1.tm_yday == 0
- * and that
- * timeptr->tm_wday MOD 7 == timeptr->tm_wday
- * from which it follows that. . .
- */
- jan1day = timeptr->tm_wday - (timeptr->tm_yday % 7);
- if (jan1day < 0)
- jan1day += 7;
-
- /*
- * If Jan 1 was a Monday through Thursday, it was in
- * week 1. Otherwise it was last year's highest week, which is
- * this year's week 0.
- *
- * What does that mean?
- * If Jan 1 was Monday, the week number is exactly right, it can
- * never be 0.
- * If it was Tuesday through Thursday, the weeknumber is one
- * less than it should be, so we add one.
- * Otherwise, Friday, Saturday or Sunday, the week number is
- * OK, but if it is 0, it needs to be 52 or 53.
- */
- switch (jan1day) {
- case 1: /* Monday */
- break;
- case 2: /* Tuesday */
- case 3: /* Wednesday */
- case 4: /* Thursday */
- weeknum++;
- break;
- case 5: /* Friday */
- case 6: /* Saturday */
- case 0: /* Sunday */
- if (weeknum == 0) {
-#ifdef USE_BROKEN_XPG4
- /* XPG4 (as of March 1994) says 53 unconditionally */
- weeknum = 53;
-#else
- /* get week number of last week of last year */
- struct tm dec31ly; /* 12/31 last year */
- dec31ly = *timeptr;
- dec31ly.tm_year--;
- dec31ly.tm_mon = 11;
- dec31ly.tm_mday = 31;
- dec31ly.tm_wday = (jan1day == 0) ? 6 : jan1day - 1;
- dec31ly.tm_yday = 364 + isleap(dec31ly.tm_year + 1900L);
- weeknum = iso8601wknum(& dec31ly);
-#endif
- }
- break;
- }
-
- if (timeptr->tm_mon == 11) {
- /*
- * The last week of the year
- * can be in week 1 of next year.
- * Sigh.
- *
- * This can only happen if
- * M T W
- * 29 30 31
- * 30 31
- * 31
- */
- int wday, mday;
-
- wday = timeptr->tm_wday;
- mday = timeptr->tm_mday;
- if ( (wday == 1 && (mday >= 29 && mday <= 31))
- || (wday == 2 && (mday == 30 || mday == 31))
- || (wday == 3 && mday == 31))
- weeknum = 1;
- }
-
- return weeknum;
-}
-#endif
-
-/* weeknumber --- figure how many weeks into the year */
-
-/* With thanks and tip of the hatlo to ado@elsie.nci.nih.gov */
-
-#ifndef __STDC__
-static int
-weeknumber(timeptr, firstweekday)
-const struct tm *timeptr;
-int firstweekday;
-#else
-static int
-weeknumber(const struct tm *timeptr, int firstweekday)
-#endif
-{
- int wday = timeptr->tm_wday;
- int ret;
-
- if (firstweekday == 1) {
- if (wday == 0) /* sunday */
- wday = 6;
- else
- wday--;
- }
- ret = ((timeptr->tm_yday + 7 - wday) / 7);
- if (ret < 0)
- ret = 0;
- return ret;
-}
-
-#if 0
-/* ADR --- I'm loathe to mess with ado's code ... */
-
-Date: Wed, 24 Apr 91 20:54:08 MDT
-From: Michal Jaegermann <audfax!emory!vm.ucs.UAlberta.CA!NTOMCZAK>
-To: arnold@audiofax.com
-
-Hi Arnold,
-in a process of fixing of strftime() in libraries on Atari ST I grabbed
-some pieces of code from your own strftime. When doing that it came
-to mind that your weeknumber() function compiles a little bit nicer
-in the following form:
-/*
- * firstweekday is 0 if starting in Sunday, non-zero if in Monday
- */
-{
- return (timeptr->tm_yday - timeptr->tm_wday +
- (firstweekday ? (timeptr->tm_wday ? 8 : 1) : 7)) / 7;
-}
-How nicer it depends on a compiler, of course, but always a tiny bit.
-
- Cheers,
- Michal
- ntomczak@vm.ucs.ualberta.ca
-#endif
-
-#ifdef TEST_STRFTIME
-
-/*
- * NAME:
- * tst
- *
- * SYNOPSIS:
- * tst
- *
- * DESCRIPTION:
- * "tst" is a test driver for the function "strftime".
- *
- * OPTIONS:
- * None.
- *
- * AUTHOR:
- * Karl Vogel
- * Control Data Systems, Inc.
- * vogelke@c-17igp.wpafb.af.mil
- *
- * BUGS:
- * None noticed yet.
- *
- * COMPILE:
- * cc -o tst -DTEST_STRFTIME strftime.c
- */
-
-/* ADR: I reformatted this to my liking, and deleted some unneeded code. */
-
-#ifndef NULL
-#include <stdio.h>
-#endif
-#include <sys/time.h>
-#include <string.h>
-
-#define MAXTIME 132
-
-/*
- * Array of time formats.
- */
-
-static char *array[] =
-{
- "(%%A) full weekday name, var length (Sunday..Saturday) %A",
- "(%%B) full month name, var length (January..December) %B",
- "(%%C) Century %C",
- "(%%D) date (%%m/%%d/%%y) %D",
- "(%%E) Locale extensions (ignored) %E",
- "(%%H) hour (24-hour clock, 00..23) %H",
- "(%%I) hour (12-hour clock, 01..12) %I",
- "(%%M) minute (00..59) %M",
- "(%%O) Locale extensions (ignored) %O",
- "(%%R) time, 24-hour (%%H:%%M) %R",
- "(%%S) second (00..60) %S",
- "(%%T) time, 24-hour (%%H:%%M:%%S) %T",
- "(%%U) week of year, Sunday as first day of week (00..53) %U",
- "(%%V) week of year according to ISO 8601 %V",
- "(%%W) week of year, Monday as first day of week (00..53) %W",
- "(%%X) appropriate locale time representation (%H:%M:%S) %X",
- "(%%Y) year with century (1970...) %Y",
- "(%%Z) timezone (EDT), or blank if timezone not determinable %Z",
- "(%%a) locale's abbreviated weekday name (Sun..Sat) %a",
- "(%%b) locale's abbreviated month name (Jan..Dec) %b",
- "(%%c) full date (Sat Nov 4 12:02:33 1989)%n%t%t%t %c",
- "(%%d) day of the month (01..31) %d",
- "(%%e) day of the month, blank-padded ( 1..31) %e",
- "(%%h) should be same as (%%b) %h",
- "(%%j) day of the year (001..366) %j",
- "(%%k) hour, 24-hour clock, blank pad ( 0..23) %k",
- "(%%l) hour, 12-hour clock, blank pad ( 0..12) %l",
- "(%%m) month (01..12) %m",
- "(%%p) locale's AM or PM based on 12-hour clock %p",
- "(%%r) time, 12-hour (same as %%I:%%M:%%S %%p) %r",
- "(%%u) ISO 8601: Weekday as decimal number [1 (Monday) - 7] %u",
- "(%%v) VMS date (dd-bbb-YYYY) %v",
- "(%%w) day of week (0..6, Sunday == 0) %w",
- "(%%x) appropriate locale date representation %x",
- "(%%y) last two digits of year (00..99) %y",
- "(%%z) timezone offset east of GMT as HHMM (e.g. -0500) %z",
- (char *) NULL
-};
-
-/* main routine. */
-
-int
-main(argc, argv)
-int argc;
-char **argv;
-{
- long time();
-
- char *next;
- char string[MAXTIME];
-
- int k;
- int length;
-
- struct tm *tm;
-
- long clock;
-
- /* Call the function. */
-
- clock = time((long *) 0);
- tm = localtime(&clock);
-
- for (k = 0; next = array[k]; k++) {
- length = strftime(string, MAXTIME, next, tm);
- printf("%s\n", string);
- }
-
- exit(0);
-}
-#endif /* TEST_STRFTIME */
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