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Import tzcode2004a.

Browse Source 
Obtained from:	ftp://elsie.nci.nih.gov/pub/tzcode2004a.tar.gz
This commit is contained in:
Stefan Farfeleder 2004-06-14 09:31:29 +00:00
parent 7765d84cde
commit dcd1bc204f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/vendor/tzcode/dist/; revision=130459
5 changed files with 398 additions and 133 deletions
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43
lib/libc/stdtime/asctime.c
View File

@ -1,11 +1,11 @@
/*
** This file is in the public domain, so clarified as of
** June 5, 1996 by Arthur David Olson (arthur_david_olson@nih.gov).
** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
*/
#ifndef lint
#ifndef NOID
static char elsieid[] = "@(#)asctime.c 7.7";
static char elsieid[] = "@(#)asctime.c 7.9";
#endif /* !defined NOID */
#endif /* !defined lint */
@ -15,12 +15,13 @@ static char elsieid[] = "@(#)asctime.c 7.7";
#include "tzfile.h"
/*
** A la X3J11, with core dump avoidance.
** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, Second Edition, 1996-07-12.
*/
char *
asctime(timeptr)
asctime_r(timeptr, buf)
register const struct tm * timeptr;
char * buf;
{
static const char wday_name[][3] = {
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
@ -29,15 +30,6 @@ register const struct tm * timeptr;
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
/*
** 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];
register const char * wn;
register const char * mn;
@ -52,10 +44,31 @@ register const struct tm * timeptr;
** "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n"
** Since the .2 in 02.2d is ignored, we drop it.
*/
(void) sprintf(result, "%.3s %.3s%3d %02d:%02d:%02d %d\n",
(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 result;
return buf;
}
/*
** A la X3J11, with core dump avoidance.
*/
char *
asctime(timeptr)
register 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);
}

16
lib/libc/stdtime/difftime.c
View File

@ -5,7 +5,7 @@
#ifndef lint
#ifndef NOID
static char elsieid[] = "@(#)difftime.c 7.7";
static char elsieid[] = "@(#)difftime.c 7.9";
#endif /* !defined NOID */
#endif /* !defined lint */
@ -32,10 +32,16 @@ const time_t time0;
time_t delta;
time_t hibit;
if (sizeof(time_t) < sizeof(double))
return (double) time1 - (double) time0;
if (sizeof(time_t) < sizeof(long_double))
return (long_double) time1 - (long_double) time0;
{
time_t tt;
double d;
long_double ld;
if (sizeof tt < sizeof d)
return (double) time1 - (double) time0;
if (sizeof tt < sizeof ld)
return (long_double) time1 - (long_double) time0;
}
if (time1 < time0)
return -difftime(time0, time1);
/*

174
lib/libc/stdtime/localtime.c
View File

@ -1,11 +1,11 @@
/*
** This file is in the public domain, so clarified as of
** June 5, 1996 by Arthur David Olson (arthur_david_olson@nih.gov).
** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
*/
#ifndef lint
#ifndef NOID
static char elsieid[] = "@(#)localtime.c 7.57";
static char elsieid[] = "@(#)localtime.c 7.78";
#endif /* !defined NOID */
#endif /* !defined lint */
@ -59,12 +59,23 @@ static char wildabbr[] = "WILDABBR";
static const char gmt[] = "GMT";
/*
** The DST rules to use if TZ has no rules and we can't load TZDEFRULES.
** We default to US rules as of 1999-08-17.
** POSIX 1003.1 section 8.1.1 says that the default DST rules are
** implementation dependent; for historical reasons, US rules are a
** common default.
*/
#ifndef TZDEFRULESTRING
#define TZDEFRULESTRING ",M4.1.0,M10.5.0"
#endif /* !defined TZDEFDST */
struct ttinfo { /* time type information */
long tt_gmtoff; /* GMT offset in seconds */
long tt_gmtoff; /* UTC offset in seconds */
int tt_isdst; /* used to set tm_isdst */
int tt_abbrind; /* abbreviation list index */
int tt_ttisstd; /* TRUE if transition is std time */
int tt_ttisgmt; /* TRUE if transition is GMT */
int tt_ttisgmt; /* TRUE if transition is UTC */
};
struct lsinfo { /* leap second information */
@ -134,6 +145,10 @@ static time_t time2 P((struct tm *tmp,
void(*funcp) P((const time_t *,
long, struct tm*)),
long offset, int * okayp));
static time_t time2sub P((struct tm *tmp,
void(*funcp) P((const time_t *,
long, struct tm*)),
long offset, int * okayp, int do_norm_secs));
static void timesub P((const time_t * timep, long offset,
const struct state * sp, struct tm * tmp));
static int tmcomp P((const struct tm * atmp,
@ -267,7 +282,7 @@ register struct state * const sp;
/*
** Section 4.9.1 of the C standard says that
** "FILENAME_MAX expands to an integral constant expression
** that is the sie needed for an array of char large enough
** that is the size needed for an array of char large enough
** to hold the longest file name string that the implementation
** guarantees can be opened."
*/
@ -298,27 +313,23 @@ register struct state * const sp;
}
{
struct tzhead * tzhp;
char buf[sizeof *sp + sizeof *tzhp];
union {
struct tzhead tzhead;
char buf[sizeof *sp + sizeof *tzhp];
} u;
int ttisstdcnt;
int ttisgmtcnt;
i = read(fid, buf, sizeof buf);
i = read(fid, u.buf, sizeof u.buf);
if (close(fid) != 0)
return -1;
p = buf;
p += sizeof tzhp->tzh_reserved;
ttisstdcnt = (int) detzcode(p);
p += 4;
ttisgmtcnt = (int) detzcode(p);
p += 4;
sp->leapcnt = (int) detzcode(p);
p += 4;
sp->timecnt = (int) detzcode(p);
p += 4;
sp->typecnt = (int) detzcode(p);
p += 4;
sp->charcnt = (int) detzcode(p);
p += 4;
ttisstdcnt = (int) detzcode(u.tzhead.tzh_ttisstdcnt);
ttisgmtcnt = (int) detzcode(u.tzhead.tzh_ttisgmtcnt);
sp->leapcnt = (int) detzcode(u.tzhead.tzh_leapcnt);
sp->timecnt = (int) detzcode(u.tzhead.tzh_timecnt);
sp->typecnt = (int) detzcode(u.tzhead.tzh_typecnt);
sp->charcnt = (int) detzcode(u.tzhead.tzh_charcnt);
p = u.tzhead.tzh_charcnt + sizeof u.tzhead.tzh_charcnt;
if (sp->leapcnt < 0 || sp->leapcnt > TZ_MAX_LEAPS ||
sp->typecnt <= 0 || sp->typecnt > TZ_MAX_TYPES ||
sp->timecnt < 0 || sp->timecnt > TZ_MAX_TIMES ||
@ -326,7 +337,7 @@ register struct state * const sp;
(ttisstdcnt != sp->typecnt && ttisstdcnt != 0) ||
(ttisgmtcnt != sp->typecnt && ttisgmtcnt != 0))
return -1;
if (i - (p - buf) < sp->timecnt * 4 + /* ats */
if (i - (p - u.buf) < sp->timecnt * 4 + /* ats */
sp->timecnt + /* types */
sp->typecnt * (4 + 2) + /* ttinfos */
sp->charcnt + /* chars */
@ -584,8 +595,8 @@ register struct rule * const rulep;
}
/*
** Given the Epoch-relative time of January 1, 00:00:00 GMT, in a year, the
** year, a rule, and the offset from GMT at the time that rule takes effect,
** Given the Epoch-relative time of January 1, 00:00:00 UTC, in a year, the
** year, a rule, and the offset from UTC at the time that rule takes effect,
** calculate the Epoch-relative time that rule takes effect.
*/
@ -671,10 +682,10 @@ const long offset;
}
/*
** "value" is the Epoch-relative time of 00:00:00 GMT on the day in
** "value" is the Epoch-relative time of 00:00:00 UTC on the day in
** question. To get the Epoch-relative time of the specified local
** time on that day, add the transition time and the current offset
** from GMT.
** from UTC.
*/
return value + rulep->r_time + offset;
}
@ -708,15 +719,14 @@ const int lastditch;
name += stdlen;
if (stdlen >= sizeof sp->chars)
stdlen = (sizeof sp->chars) - 1;
stdoffset = 0;
} else {
name = getzname(name);
stdlen = name - stdname;
if (stdlen < 3)
return -1;
}
if (*name == '\0')
return -1; /* was "stdoffset = 0;" */
else {
if (*name == '\0')
return -1;
name = getoffset(name, &stdoffset);
if (name == NULL)
return -1;
@ -735,6 +745,8 @@ const int lastditch;
if (name == NULL)
return -1;
} else dstoffset = stdoffset - SECSPERHOUR;
if (*name == '\0' && load_result != 0)
name = TZDEFRULESTRING;
if (*name == ',' || *name == ';') {
struct rule start;
struct rule end;
@ -797,8 +809,6 @@ const int lastditch;
if (*name != '\0')
return -1;
if (load_result != 0)
return -1;
/*
** Initial values of theirstdoffset and theirdstoffset.
*/
@ -872,6 +882,7 @@ const int lastditch;
sp->ttis[1].tt_gmtoff = -dstoffset;
sp->ttis[1].tt_isdst = TRUE;
sp->ttis[1].tt_abbrind = stdlen + 1;
sp->typecnt = 2;
}
} else {
dstlen = 0;
@ -884,7 +895,7 @@ const int lastditch;
sp->charcnt = stdlen + 1;
if (dstlen != 0)
sp->charcnt += dstlen + 1;
if (sp->charcnt > sizeof sp->chars)
if ((size_t) sp->charcnt > sizeof sp->chars)
return -1;
cp = sp->chars;
(void) strncpy(cp, stdname, stdlen);
@ -944,9 +955,9 @@ tzset P((void))
return;
}
if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0)
if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0)
return;
lcl_is_set = (strlen(name) < sizeof(lcl_TZname));
lcl_is_set = strlen(name) < sizeof lcl_TZname;
if (lcl_is_set)
(void) strcpy(lcl_TZname, name);
@ -965,6 +976,8 @@ tzset P((void))
*/
lclptr->leapcnt = 0; /* so, we're off a little */
lclptr->timecnt = 0;
lclptr->typecnt = 0;
lclptr->ttis[0].tt_isdst = 0;
lclptr->ttis[0].tt_gmtoff = 0;
lclptr->ttis[0].tt_abbrind = 0;
(void) strcpy(lclptr->chars, gmt);
@ -1039,6 +1052,19 @@ const time_t * const timep;
return &tm;
}
/*
** Re-entrant version of localtime.
*/
struct tm *
localtime_r(timep, tm)
const time_t * const timep;
struct tm * tm;
{
localsub(timep, 0L, tm);
return tm;
}
/*
** gmtsub is to gmtime as localsub is to localtime.
*/
@ -1061,7 +1087,7 @@ struct tm * const tmp;
#ifdef TM_ZONE
/*
** Could get fancy here and deliver something such as
** "GMT+xxxx" or "GMT-xxxx" if offset is non-zero,
** "UTC+xxxx" or "UTC-xxxx" if offset is non-zero,
** but this is no time for a treasure hunt.
*/
if (offset != 0)
@ -1087,6 +1113,19 @@ const time_t * const timep;
return &tm;
}
/*
* Re-entrant version of gmtime.
*/
struct tm *
gmtime_r(timep, tm)
const time_t * const timep;
struct tm * tm;
{
gmtsub(timep, 0L, tm);
return tm;
}
#ifdef STD_INSPIRED
struct tm *
@ -1207,13 +1246,23 @@ const time_t * const timep;
{
/*
** Section 4.12.3.2 of X3.159-1989 requires that
** The ctime funciton converts the calendar time pointed to by timer
** The ctime function converts the calendar time pointed to by timer
** to local time in the form of a string. It is equivalent to
** asctime(localtime(timer))
*/
return asctime(localtime(timep));
}
char *
ctime_r(timep, buf)
const time_t * const timep;
char * buf;
{
struct tm tm;
return asctime_r(localtime_r(timep, &tm), buf);
}
/*
** Adapted from code provided by Robert Elz, who writes:
** The "best" way to do mktime I think is based on an idea of Bob
@ -1276,11 +1325,12 @@ register const struct tm * const btmp;
}
static time_t
time2(tmp, funcp, offset, okayp)
time2sub(tmp, funcp, offset, okayp, do_norm_secs)
struct tm * const tmp;
void (* const funcp) P((const time_t*, long, struct tm*));
const long offset;
int * const okayp;
const int do_norm_secs;
{
register const struct state * sp;
register int dir;
@ -1293,6 +1343,11 @@ int * const okayp;
*okayp = FALSE;
yourtm = *tmp;
if (do_norm_secs) {
if (normalize_overflow(&yourtm.tm_min, &yourtm.tm_sec,
SECSPERMIN))
return WRONG;
}
if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR))
return WRONG;
if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY))
@ -1330,7 +1385,9 @@ int * const okayp;
}
if (increment_overflow(&yourtm.tm_year, -TM_YEAR_BASE))
return WRONG;
if (yourtm.tm_year + TM_YEAR_BASE < EPOCH_YEAR) {
if (yourtm.tm_sec >= 0 && yourtm.tm_sec < SECSPERMIN)
saved_seconds = 0;
else if (yourtm.tm_year + TM_YEAR_BASE < EPOCH_YEAR) {
/*
** We can't set tm_sec to 0, because that might push the
** time below the minimum representable time.
@ -1421,6 +1478,24 @@ int * const okayp;
return t;
}
static time_t
time2(tmp, funcp, offset, okayp)
struct tm * const tmp;
void (* const funcp) P((const time_t*, long, struct tm*));
const long offset;
int * const okayp;
{
time_t t;
/*
** First try without normalization of seconds
** (in case tm_sec contains a value associated with a leap second).
** If that fails, try with normalization of seconds.
*/
t = time2sub(tmp, funcp, offset, okayp, FALSE);
return *okayp ? t : time2sub(tmp, funcp, offset, okayp, TRUE);
}
static time_t
time1(tmp, funcp, offset)
struct tm * const tmp;
@ -1430,6 +1505,11 @@ const long offset;
register time_t t;
register const struct state * sp;
register int samei, otheri;
register int sameind, otherind;
register int i;
register int nseen;
int seen[TZ_MAX_TYPES];
int types[TZ_MAX_TYPES];
int okay;
if (tmp->tm_isdst > 1)
@ -1463,10 +1543,20 @@ const long offset;
if (sp == NULL)
return WRONG;
#endif /* defined ALL_STATE */
for (samei = sp->typecnt - 1; samei >= 0; --samei) {
for (i = 0; i < sp->typecnt; ++i)
seen[i] = FALSE;
nseen = 0;
for (i = sp->timecnt - 1; i >= 0; --i)
if (!seen[sp->types[i]]) {
seen[sp->types[i]] = TRUE;
types[nseen++] = sp->types[i];
}
for (sameind = 0; sameind < nseen; ++sameind) {
samei = types[sameind];
if (sp->ttis[samei].tt_isdst != tmp->tm_isdst)
continue;
for (otheri = sp->typecnt - 1; otheri >= 0; --otheri) {
for (otherind = 0; otherind < nseen; ++otherind) {
otheri = types[otherind];
if (sp->ttis[otheri].tt_isdst == tmp->tm_isdst)
continue;
tmp->tm_sec += sp->ttis[otheri].tt_gmtoff -
@ -1548,7 +1638,7 @@ struct tm * const tmp;
/*
** IEEE Std 1003.1-1988 (POSIX) legislates that 536457599
** shall correspond to "Wed Dec 31 23:59:59 GMT 1986", which
** shall correspond to "Wed Dec 31 23:59:59 UTC 1986", which
** is not the case if we are accounting for leap seconds.
** So, we provide the following conversion routines for use
** when exchanging timestamps with POSIX conforming systems.

72
lib/libc/stdtime/private.h
View File

@ -4,7 +4,7 @@
/*
** This file is in the public domain, so clarified as of
** June 5, 1996 by Arthur David Olson (arthur_david_olson@nih.gov).
** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
*/
/*
@ -21,7 +21,7 @@
#ifndef lint
#ifndef NOID
static char privatehid[] = "@(#)private.h 7.43";
static char privatehid[] = "@(#)private.h 7.53";
#endif /* !defined NOID */
#endif /* !defined lint */
@ -38,14 +38,30 @@ static char privatehid[] = "@(#)private.h 7.43";
#define HAVE_GETTEXT 0
#endif /* !defined HAVE_GETTEXT */
#ifndef HAVE_INCOMPATIBLE_CTIME_R
#define HAVE_INCOMPATIBLE_CTIME_R 0
#endif /* !defined INCOMPATIBLE_CTIME_R */
#ifndef HAVE_SETTIMEOFDAY
#define HAVE_SETTIMEOFDAY 3
#endif /* !defined HAVE_SETTIMEOFDAY */
#ifndef HAVE_STRERROR
#define HAVE_STRERROR 0
#define HAVE_STRERROR 1
#endif /* !defined HAVE_STRERROR */
#ifndef HAVE_SYMLINK
#define HAVE_SYMLINK 1
#endif /* !defined HAVE_SYMLINK */
#ifndef HAVE_SYS_STAT_H
#define HAVE_SYS_STAT_H 1
#endif /* !defined HAVE_SYS_STAT_H */
#ifndef HAVE_SYS_WAIT_H
#define HAVE_SYS_WAIT_H 1
#endif /* !defined HAVE_SYS_WAIT_H */
#ifndef HAVE_UNISTD_H
#define HAVE_UNISTD_H 1
#endif /* !defined HAVE_UNISTD_H */
@ -58,6 +74,11 @@ static char privatehid[] = "@(#)private.h 7.43";
#define LOCALE_HOME "/usr/lib/locale"
#endif /* !defined LOCALE_HOME */
#if HAVE_INCOMPATIBLE_CTIME_R
#define asctime_r _incompatible_asctime_r
#define ctime_r _incompatible_ctime_r
#endif /* HAVE_INCOMPATIBLE_CTIME_R */
/*
** Nested includes
*/
@ -74,6 +95,17 @@ static char privatehid[] = "@(#)private.h 7.43";
#include "libintl.h"
#endif /* HAVE_GETTEXT - 0 */
#if HAVE_SYS_WAIT_H - 0
#include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */
#endif /* HAVE_SYS_WAIT_H - 0 */
#ifndef WIFEXITED
#define WIFEXITED(status) (((status) & 0xff) == 0)
#endif /* !defined WIFEXITED */
#ifndef WEXITSTATUS
#define WEXITSTATUS(status) (((status) >> 8) & 0xff)
#endif /* !defined WEXITSTATUS */
#if HAVE_UNISTD_H - 0
#include "unistd.h" /* for F_OK and R_OK */
#endif /* HAVE_UNISTD_H - 0 */
@ -94,16 +126,6 @@ static char privatehid[] = "@(#)private.h 7.43";
** Workarounds for compilers/systems.
*/
/*
** SunOS 4.1.1 cc lacks const.
*/
#ifndef const
#ifndef __STDC__
#define const
#endif /* !defined __STDC__ */
#endif /* !defined const */
/*
** SunOS 4.1.1 cc lacks prototypes.
*/
@ -172,6 +194,19 @@ extern int unlink P((const char * filename));
extern int errno;
#endif /* !defined errno */
/*
** Private function declarations.
*/
char * icalloc P((int nelem, int elsize));
char * icatalloc P((char * old, const char * new));
char * icpyalloc P((const char * string));
char * imalloc P((int n));
void * irealloc P((void * pointer, int size));
void icfree P((char * pointer));
void ifree P((char * pointer));
char * scheck P((const char *string, const char *format));
/*
** Finally, some convenience items.
*/
@ -200,7 +235,7 @@ extern int errno;
** add one more for a minus sign if the type is signed.
*/
#define INT_STRLEN_MAXIMUM(type) \
((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 100 + 1 + TYPE_SIGNED(type))
((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
#endif /* !defined INT_STRLEN_MAXIMUM */
/*
@ -245,8 +280,15 @@ extern int errno;
#define TZ_DOMAIN "tz"
#endif /* !defined TZ_DOMAIN */
#if HAVE_INCOMPATIBLE_CTIME_R
#undef asctime_r
#undef ctime_r
char *asctime_r P((struct tm const *, char *));
char *ctime_r P((time_t const *, char *));
#endif /* HAVE_INCOMPATIBLE_CTIME_R */
/*
** UNIX was a registered trademark of UNIX System Laboratories in 1993.
** UNIX was a registered trademark of The Open Group in 2003.
*/
#endif /* !defined PRIVATE_H */

226
lib/libc/stdtime/strftime.c
View File

@ -1,6 +1,6 @@
#ifndef lint
#ifndef NOID
static char elsieid[] = "@(#)strftime.c 7.47";
static char elsieid[] = "@(#)strftime.c 7.64";
/*
** Based on the UCB version with the ID appearing below.
** This is ANSIish only when "multibyte character == plain character".
@ -38,10 +38,10 @@ static const char sccsid[] = "@(#)strftime.c 5.4 (Berkeley) 3/14/89";
#include "locale.h"
struct lc_time_T {
const char * mon[12];
const char * month[12];
const char * wday[7];
const char * weekday[7];
const char * mon[MONSPERYEAR];
const char * month[MONSPERYEAR];
const char * wday[DAYSPERWEEK];
const char * weekday[DAYSPERWEEK];
const char * X_fmt;
const char * x_fmt;
const char * c_fmt;
@ -80,8 +80,7 @@ static const struct lc_time_T C_time_locale = {
/*
** x_fmt
** Since the C language standard calls for
** "date, using locale's date format," anything goes.
** C99 requires this format.
** Using just numbers (as here) makes Quakers happier;
** it's also compatible with SVR4.
*/
@ -89,11 +88,13 @@ static const struct lc_time_T C_time_locale = {
/*
** c_fmt
** C99 requires this format.
** Previously this code used "%D %X", but we now conform to C99.
** Note that
** "%a %b %d %H:%M:%S %Y"
** "%a %b %d %H:%M:%S %Y"
** is used by Solaris 2.3.
*/
"%D %X", /* %m/%d/%y %H:%M:%S */
"%a %b %e %T %Y",
/* am */
"AM",
@ -107,12 +108,22 @@ static const struct lc_time_T C_time_locale = {
static char * _add P((const char *, char *, const char *));
static char * _conv P((int, const char *, char *, const char *));
static char * _fmt P((const char *, const struct tm *, char *, const char *));
static char * _fmt P((const char *, const struct tm *, char *, const char *, int *));
size_t strftime P((char *, size_t, const char *, const struct tm *));
extern char * tzname[];
#ifndef YEAR_2000_NAME
#define YEAR_2000_NAME "CHECK_STRFTIME_FORMATS_FOR_TWO_DIGIT_YEARS"
#endif /* !defined YEAR_2000_NAME */
#define IN_NONE 0
#define IN_SOME 1
#define IN_THIS 2
#define IN_ALL 3
size_t
strftime(s, maxsize, format, t)
char * const s;
@ -121,12 +132,30 @@ const char * const format;
const struct tm * const t;
{
char * p;
int warn;
tzset();
#ifdef LOCALE_HOME
localebuf.mon[0] = 0;
#endif /* defined LOCALE_HOME */
p = _fmt(((format == NULL) ? "%c" : format), t, s, s + maxsize);
warn = IN_NONE;
p = _fmt(((format == NULL) ? "%c" : format), t, s, s + maxsize, &warn);
#ifndef NO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU
if (warn != IN_NONE && getenv(YEAR_2000_NAME) != NULL) {
(void) fprintf(stderr, "\n");
if (format == NULL)
(void) fprintf(stderr, "NULL strftime format ");
else (void) fprintf(stderr, "strftime format \"%s\" ",
format);
(void) fprintf(stderr, "yields only two digits of years in ");
if (warn == IN_SOME)
(void) fprintf(stderr, "some locales");
else if (warn == IN_THIS)
(void) fprintf(stderr, "the current locale");
else (void) fprintf(stderr, "all locales");
(void) fprintf(stderr, "\n");
}
#endif /* !defined NO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU */
if (p == s + maxsize)
return 0;
*p = '\0';
@ -134,11 +163,12 @@ const struct tm * const t;
}
static char *
_fmt(format, t, pt, ptlim)
_fmt(format, t, pt, ptlim, warnp)
const char * format;
const struct tm * const t;
char * pt;
const char * const ptlim;
int * warnp;
{
for ( ; *format; ++format) {
if (*format == '%') {
@ -148,23 +178,27 @@ const char * const ptlim;
--format;
break;
case 'A':
pt = _add((t->tm_wday < 0 || t->tm_wday > 6) ?
pt = _add((t->tm_wday < 0 ||
t->tm_wday >= DAYSPERWEEK) ?
"?" : Locale->weekday[t->tm_wday],
pt, ptlim);
continue;
case 'a':
pt = _add((t->tm_wday < 0 || t->tm_wday > 6) ?
pt = _add((t->tm_wday < 0 ||
t->tm_wday >= DAYSPERWEEK) ?
"?" : Locale->wday[t->tm_wday],
pt, ptlim);
continue;
case 'B':
pt = _add((t->tm_mon < 0 || t->tm_mon > 11) ?
pt = _add((t->tm_mon < 0 ||
t->tm_mon >= MONSPERYEAR) ?
"?" : Locale->month[t->tm_mon],
pt, ptlim);
continue;
case 'b':
case 'h':
pt = _add((t->tm_mon < 0 || t->tm_mon > 11) ?
pt = _add((t->tm_mon < 0 ||
t->tm_mon >= MONSPERYEAR) ?
"?" : Locale->mon[t->tm_mon],
pt, ptlim);
continue;
@ -174,16 +208,24 @@ const char * const ptlim;
** _fmt("%a %b %e %X %Y", t);
** ...whereas now POSIX 1003.2 calls for
** something completely different.
** (ado, 5/24/93)
** (ado, 1993-05-24)
*/
pt = _conv((t->tm_year + TM_YEAR_BASE) / 100,
"%02d", pt, ptlim);
continue;
case 'c':
pt = _fmt(Locale->c_fmt, t, pt, ptlim);
{
int warn2 = IN_SOME;
pt = _fmt(Locale->c_fmt, t, pt, ptlim, warnp);
if (warn2 == IN_ALL)
warn2 = IN_THIS;
if (warn2 > *warnp)
*warnp = warn2;
}
continue;
case 'D':
pt = _fmt("%m/%d/%y", t, pt, ptlim);
pt = _fmt("%m/%d/%y", t, pt, ptlim, warnp);
continue;
case 'd':
pt = _conv(t->tm_mday, "%02d", pt, ptlim);
@ -191,20 +233,21 @@ const char * const ptlim;
case 'E':
case 'O':
/*
** POSIX locale extensions, a la
** Arnold Robbins' strftime version 3.0.
** C99 locale modifiers.
** The sequences
** %Ec %EC %Ex %Ey %EY
** %Ec %EC %Ex %EX %Ey %EY
** %Od %oe %OH %OI %Om %OM
** %OS %Ou %OU %OV %Ow %OW %Oy
** are supposed to provide alternate
** representations.
** (ado, 5/24/93)
*/
goto label;
case 'e':
pt = _conv(t->tm_mday, "%2d", pt, ptlim);
continue;
case 'F':
pt = _fmt("%Y-%m-%d", t, pt, ptlim, warnp);
continue;
case 'H':
pt = _conv(t->tm_hour, "%02d", pt, ptlim);
continue;
@ -225,7 +268,7 @@ const char * const ptlim;
** match SunOS 4.1.1 and Arnold Robbins'
** strftime version 3.0. That is, "%k" and
** "%l" have been swapped.
** (ado, 5/24/93)
** (ado, 1993-05-24)
*/
pt = _conv(t->tm_hour, "%2d", pt, ptlim);
continue;
@ -245,7 +288,7 @@ const char * const ptlim;
** match SunOS 4.1.1 and Arnold Robbin's
** strftime version 3.0. That is, "%k" and
** "%l" have been swapped.
** (ado, 5/24/93)
** (ado, 1993-05-24)
*/
pt = _conv((t->tm_hour % 12) ?
(t->tm_hour % 12) : 12,
@ -261,16 +304,16 @@ const char * const ptlim;
pt = _add("\n", pt, ptlim);
continue;
case 'p':
pt = _add((t->tm_hour >= 12) ?
pt = _add((t->tm_hour >= (HOURSPERDAY / 2)) ?
Locale->pm :
Locale->am,
pt, ptlim);
continue;
case 'R':
pt = _fmt("%H:%M", t, pt, ptlim);
pt = _fmt("%H:%M", t, pt, ptlim, warnp);
continue;
case 'r':
pt = _fmt("%I:%M:%S %p", t, pt, ptlim);
pt = _fmt("%I:%M:%S %p", t, pt, ptlim, warnp);
continue;
case 'S':
pt = _conv(t->tm_sec, "%02d", pt, ptlim);
@ -293,13 +336,14 @@ const char * const ptlim;
}
continue;
case 'T':
pt = _fmt("%H:%M:%S", t, pt, ptlim);
pt = _fmt("%H:%M:%S", t, pt, ptlim, warnp);
continue;
case 't':
pt = _add("\t", pt, ptlim);
continue;
case 'U':
pt = _conv((t->tm_yday + 7 - t->tm_wday) / 7,
pt = _conv((t->tm_yday + DAYSPERWEEK -
t->tm_wday) / DAYSPERWEEK,
"%02d", pt, ptlim);
continue;
case 'u':
@ -307,9 +351,10 @@ const char * const ptlim;
** From Arnold Robbins' strftime version 3.0:
** "ISO 8601: Weekday as a decimal number
** [1 (Monday) - 7]"
** (ado, 5/24/93)
** (ado, 1993-05-24)
*/
pt = _conv((t->tm_wday == 0) ? 7 : t->tm_wday,
pt = _conv((t->tm_wday == 0) ?
DAYSPERWEEK : t->tm_wday,
"%d", pt, ptlim);
continue;
case 'V': /* ISO 8601 week number */
@ -381,16 +426,20 @@ const char * const ptlim;
DAYSPERNYEAR;
}
#ifdef XPG4_1994_04_09
if (w == 52 && t->tm_mon == TM_JANUARY)
if ((w == 52
&& t->tm_mon == TM_JANUARY)
|| (w == 1
&& t->tm_mon == TM_DECEMBER))
w = 53;
#endif /* defined XPG4_1994_04_09 */
if (*format == 'V')
pt = _conv(w, "%02d",
pt, ptlim);
else if (*format == 'G')
pt = _conv(year, "%02d",
else if (*format == 'g') {
*warnp = IN_ALL;
pt = _conv(year % 100, "%02d",
pt, ptlim);
else pt = _conv(year, "%04d",
} else pt = _conv(year, "%04d",
pt, ptlim);
}
continue;
@ -398,26 +447,36 @@ const char * const ptlim;
/*
** From Arnold Robbins' strftime version 3.0:
** "date as dd-bbb-YYYY"
** (ado, 5/24/93)
** (ado, 1993-05-24)
*/
pt = _fmt("%e-%b-%Y", t, pt, ptlim);
pt = _fmt("%e-%b-%Y", t, pt, ptlim, warnp);
continue;
case 'W':
pt = _conv((t->tm_yday + 7 -
pt = _conv((t->tm_yday + DAYSPERWEEK -
(t->tm_wday ?
(t->tm_wday - 1) : 6)) / 7,
(t->tm_wday - 1) :
(DAYSPERWEEK - 1))) / DAYSPERWEEK,
"%02d", pt, ptlim);
continue;
case 'w':
pt = _conv(t->tm_wday, "%d", pt, ptlim);
continue;
case 'X':
pt = _fmt(Locale->X_fmt, t, pt, ptlim);
pt = _fmt(Locale->X_fmt, t, pt, ptlim, warnp);
continue;
case 'x':
pt = _fmt(Locale->x_fmt, t, pt, ptlim);
{
int warn2 = IN_SOME;
pt = _fmt(Locale->x_fmt, t, pt, ptlim, &warn2);
if (warn2 == IN_ALL)
warn2 = IN_THIS;
if (warn2 > *warnp)
*warnp = warn2;
}
continue;
case 'y':
*warnp = IN_ALL;
pt = _conv((t->tm_year + TM_YEAR_BASE) % 100,
"%02d", pt, ptlim);
continue;
@ -431,20 +490,77 @@ const char * const ptlim;
pt = _add(t->TM_ZONE, pt, ptlim);
else
#endif /* defined TM_ZONE */
if (t->tm_isdst == 0 || t->tm_isdst == 1) {
pt = _add(tzname[t->tm_isdst],
if (t->tm_isdst >= 0)
pt = _add(tzname[t->tm_isdst != 0],
pt, ptlim);
} else pt = _add("?", pt, ptlim);
/*
** C99 says that %Z must be replaced by the
** empty string if the time zone is not
** determinable.
*/
continue;
case 'z':
{
int diff;
char const * sign;
if (t->tm_isdst < 0)
continue;
#ifdef TM_GMTOFF
diff = t->TM_GMTOFF;
#else /* !defined TM_GMTOFF */
/*
** C99 says that the UTC offset must
** be computed by looking only at
** tm_isdst. This requirement is
** incorrect, since it means the code
** must rely on magic (in this case
** altzone and timezone), and the
** magic might not have the correct
** offset. Doing things correctly is
** tricky and requires disobeying C99;
** see GNU C strftime for details.
** For now, punt and conform to the
** standard, even though it's incorrect.
**
** C99 says that %z must be replaced by the
** empty string if the time zone is not
** determinable, so output nothing if the
** appropriate variables are not available.
*/
if (t->tm_isdst == 0)
#ifdef USG_COMPAT
diff = -timezone;
#else /* !defined USG_COMPAT */
continue;
#endif /* !defined USG_COMPAT */
else
#ifdef ALTZONE
diff = -altzone;
#else /* !defined ALTZONE */
continue;
#endif /* !defined ALTZONE */
#endif /* !defined TM_GMTOFF */
if (diff < 0) {
sign = "-";
diff = -diff;
} else sign = "+";
pt = _add(sign, pt, ptlim);
diff /= 60;
pt = _conv((diff/60)*100 + diff%60,
"%04d", pt, ptlim);
}
continue;
case '+':
pt = _fmt(Locale->date_fmt, t, pt, ptlim);
pt = _fmt(Locale->date_fmt, t, pt, ptlim,
warnp);
continue;
case '%':
/*
* X311J/88-090 (4.12.3.5): if conversion char is
* undefined, behavior is undefined. Print out the
* character itself as printf(3) also does.
*/
** X311J/88-090 (4.12.3.5): if conversion char is
** undefined, behavior is undefined. Print out the
** character itself as printf(3) also does.
*/
default:
break;
}
@ -487,7 +603,6 @@ _loc P((void))
static const char locale_home[] = LOCALE_HOME;
static const char lc_time[] = "LC_TIME";
static char * locale_buf;
static char locale_buf_C[] = "C";
int fd;
int oldsun; /* "...ain't got nothin' to do..." */
@ -525,8 +640,8 @@ _loc P((void))
** Slurp the locale file into the cache.
*/
namesize = strlen(name) + 1;
if (sizeof(filename) <
sizeof(locale_home) + namesize + sizeof(lc_time))
if (sizeof filename <
((sizeof locale_home) + namesize + (sizeof lc_time)))
goto no_locale;
oldsun = 0;
(void) sprintf(filename, "%s/%s/%s", locale_home, name, lc_time);
@ -548,8 +663,7 @@ _loc P((void))
goto bad_locale;
bufsize = namesize + st.st_size;
locale_buf = NULL;
lbuf = (lbuf == NULL || lbuf == locale_buf_C) ?
malloc(bufsize) : realloc(lbuf, bufsize);
lbuf = (lbuf == NULL) ? malloc(bufsize) : realloc(lbuf, bufsize);
if (lbuf == NULL)
goto bad_locale;
(void) strcpy(lbuf, name);
@ -598,7 +712,7 @@ _loc P((void))
(void) close(fd);
no_locale:
localebuf = C_time_locale;
locale_buf = locale_buf_C;
locale_buf = NULL;
return &localebuf;
}
#endif /* defined LOCALE_HOME */