mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-21 18:27:22 +00:00
Split the contributed code from libc/stdtime from lib/libc/stdtime
to contrib/tzcode/stdtime.
This commit is contained in:
Edwin Groothuis
parent
e7dc8641d6
commit
dcfeda6122
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=204347
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@ -50,7 +50,7 @@ __FBSDID("$FreeBSD$");
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#include <unistd.h>
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#include "../stdlib/atexit.h"
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#include "../stdtime/tzfile.h"
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#include "tzfile.h" /* from ../../../contrib/tzcode/stdtime */
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#define _PATH_ZONEINFO TZDIR /* from tzfile.h */
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@ -1,13 +1,16 @@
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# Makefile.inc,v 1.2 1994/09/13 21:26:01 wollman Exp
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# $FreeBSD$
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.PATH: ${.CURDIR}/stdtime ${.CURDIR}/../locale
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.PATH: ${.CURDIR}/stdtime ${.CURDIR}/../locale \
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${.CURDIR}/../../contrib/tzcode/stdtime
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SRCS+= asctime.c difftime.c localtime.c strftime.c strptime.c timelocal.c \
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time32.c
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SYM_MAPS+= ${.CURDIR}/stdtime/Symbol.map
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CFLAGS+= -I${.CURDIR}/../../contrib/tzcode/stdtime -I${.CURDIR}/stdtime
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MAN+= ctime.3 strftime.3 strptime.3 time2posix.3
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MAN+= tzfile.5
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@ -1,142 +0,0 @@
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/*
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** This file is in the public domain, so clarified as of
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** 1996-06-05 by Arthur David Olson.
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*/
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/*
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** Avoid the temptation to punt entirely to strftime;
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** the output of strftime is supposed to be locale specific
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** whereas the output of asctime is supposed to be constant.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#ifndef NOID
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static char elsieid[] __unused = "@(#)asctime.c 8.2";
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#endif /* !defined NOID */
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#endif /* !defined lint */
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__FBSDID("$FreeBSD$");
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/*LINTLIBRARY*/
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#include "namespace.h"
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#include "private.h"
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#include "un-namespace.h"
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#include "tzfile.h"
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/*
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** Some systems only handle "%.2d"; others only handle "%02d";
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** "%02.2d" makes (most) everybody happy.
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** At least some versions of gcc warn about the %02.2d;
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** we conditionalize below to avoid the warning.
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*/
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/*
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** All years associated with 32-bit time_t values are exactly four digits long;
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** some years associated with 64-bit time_t values are not.
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** Vintage programs are coded for years that are always four digits long
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** and may assume that the newline always lands in the same place.
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** For years that are less than four digits, we pad the output with
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** leading zeroes to get the newline in the traditional place.
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** The -4 ensures that we get four characters of output even if
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** we call a strftime variant that produces fewer characters for some years.
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** The ISO C 1999 and POSIX 1003.1-2004 standards prohibit padding the year,
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** but many implementations pad anyway; most likely the standards are buggy.
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*/
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#ifdef __GNUC__
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#define ASCTIME_FMT "%.3s %.3s%3d %2.2d:%2.2d:%2.2d %-4s\n"
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#else /* !defined __GNUC__ */
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#define ASCTIME_FMT "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %-4s\n"
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#endif /* !defined __GNUC__ */
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/*
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** For years that are more than four digits we put extra spaces before the year
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** so that code trying to overwrite the newline won't end up overwriting
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** a digit within a year and truncating the year (operating on the assumption
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** that no output is better than wrong output).
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*/
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#ifdef __GNUC__
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#define ASCTIME_FMT_B "%.3s %.3s%3d %2.2d:%2.2d:%2.2d %s\n"
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#else /* !defined __GNUC__ */
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#define ASCTIME_FMT_B "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %s\n"
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#endif /* !defined __GNUC__ */
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#define STD_ASCTIME_BUF_SIZE 26
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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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** seven explicit spaces, two explicit colons, a newline,
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** and a trailing ASCII nul).
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** The values above are for systems where an int is 32 bits and are provided
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** as an example; the define below calculates the maximum for the system at
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** hand.
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*/
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#define MAX_ASCTIME_BUF_SIZE (2*3+5*INT_STRLEN_MAXIMUM(int)+7+2+1+1)
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static char buf_asctime[MAX_ASCTIME_BUF_SIZE];
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/*
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** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, 2004 Edition.
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*/
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char *
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asctime_r(timeptr, buf)
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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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const char * wn;
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const char * mn;
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char year[INT_STRLEN_MAXIMUM(int) + 2];
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char result[MAX_ASCTIME_BUF_SIZE];
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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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** Use strftime's %Y to generate the year, to avoid overflow problems
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** when computing timeptr->tm_year + TM_YEAR_BASE.
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** Assume that strftime is unaffected by other out-of-range members
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** (e.g., timeptr->tm_mday) when processing "%Y".
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*/
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(void) strftime(year, sizeof year, "%Y", timeptr);
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/*
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** We avoid using snprintf since it's not available on all systems.
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*/
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(void) sprintf(result,
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((strlen(year) <= 4) ? ASCTIME_FMT : ASCTIME_FMT_B),
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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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year);
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if (strlen(result) < STD_ASCTIME_BUF_SIZE || buf == buf_asctime) {
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(void) strcpy(buf, result);
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return buf;
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} else {
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#ifdef EOVERFLOW
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errno = EOVERFLOW;
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#else /* !defined EOVERFLOW */
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errno = EINVAL;
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#endif /* !defined EOVERFLOW */
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return NULL;
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}
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}
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/*
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** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, 2004 Edition.
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*/
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char *
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asctime(timeptr)
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const struct tm * timeptr;
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{
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return asctime_r(timeptr, buf_asctime);
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}
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@ -1,374 +0,0 @@
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.\" Copyright (c) 1989, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" Arthur Olson.
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 4. Neither the name of the University nor the names of its contributors
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||||
.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" From: @(#)ctime.3 8.1 (Berkeley) 6/4/93
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.\" $FreeBSD$
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.\"
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.Dd January 2, 1999
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.Dt CTIME 3
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.Os
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.Sh NAME
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.Nm asctime ,
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.Nm asctime_r ,
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.Nm ctime ,
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.Nm ctime_r ,
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.Nm difftime ,
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.Nm gmtime ,
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.Nm gmtime_r ,
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.Nm localtime ,
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.Nm localtime_r ,
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.Nm mktime ,
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.Nm timegm
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.Nd transform binary date and time values
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In time.h
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.Vt extern char *tzname[2] ;
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.Ft char *
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.Fn ctime "const time_t *clock"
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.Ft double
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.Fn difftime "time_t time1" "time_t time0"
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.Ft char *
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.Fn asctime "const struct tm *tm"
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.Ft struct tm *
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.Fn localtime "const time_t *clock"
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.Ft struct tm *
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.Fn gmtime "const time_t *clock"
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.Ft time_t
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.Fn mktime "struct tm *tm"
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.Ft time_t
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.Fn timegm "struct tm *tm"
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.Ft char *
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.Fn ctime_r "const time_t *clock" "char *buf"
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.Ft struct tm *
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.Fn localtime_r "const time_t *clock" "struct tm *result"
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.Ft struct tm *
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.Fn gmtime_r "const time_t *clock" "struct tm *result"
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.Ft char *
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.Fn asctime_r "const struct tm *tm" "char *buf"
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.Sh DESCRIPTION
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The functions
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.Fn ctime ,
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.Fn gmtime
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and
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.Fn localtime
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all take as an argument a time value representing the time in seconds since
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the Epoch (00:00:00
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.Tn UTC ,
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January 1, 1970; see
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.Xr time 3 ) .
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.Pp
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The function
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.Fn localtime
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converts the time value pointed at by
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.Fa clock ,
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and returns a pointer to a
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.Dq Fa struct tm
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(described below) which contains
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the broken-out time information for the value after adjusting for the current
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time zone (and any other factors such as Daylight Saving Time).
|
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Time zone adjustments are performed as specified by the
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.Ev TZ
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environment variable (see
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.Xr tzset 3 ) .
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The function
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.Fn localtime
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uses
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.Xr tzset 3
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to initialize time conversion information if
|
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.Xr tzset 3
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has not already been called by the process.
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.Pp
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After filling in the tm structure,
|
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.Fn localtime
|
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sets the
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.Fa tm_isdst Ns 'th
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element of
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.Fa tzname
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to a pointer to an
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.Tn ASCII
|
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string that is the time zone abbreviation to be
|
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used with
|
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.Fn localtime Ns 's
|
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return value.
|
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.Pp
|
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The function
|
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.Fn gmtime
|
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similarly converts the time value, but without any time zone adjustment,
|
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and returns a pointer to a tm structure (described below).
|
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.Pp
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The
|
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.Fn ctime
|
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function
|
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adjusts the time value for the current time zone in the same manner as
|
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.Fn localtime ,
|
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and returns a pointer to a 26-character string of the form:
|
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.Bd -literal -offset indent
|
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Thu Nov 24 18:22:48 1986\en\e0
|
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.Ed
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.Pp
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All the fields have constant width.
|
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.Pp
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The
|
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.Fn ctime_r
|
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function
|
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provides the same functionality as
|
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.Fn ctime
|
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except the caller must provide the output buffer
|
||||
.Fa buf
|
||||
to store the result, which must be at least 26 characters long.
|
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The
|
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.Fn localtime_r
|
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and
|
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.Fn gmtime_r
|
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functions
|
||||
provide the same functionality as
|
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.Fn localtime
|
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and
|
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.Fn gmtime
|
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respectively, except the caller must provide the output buffer
|
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.Fa result .
|
||||
.Pp
|
||||
The
|
||||
.Fn asctime
|
||||
function
|
||||
converts the broken down time in the structure
|
||||
.Fa tm
|
||||
pointed at by
|
||||
.Fa *tm
|
||||
to the form
|
||||
shown in the example above.
|
||||
.Pp
|
||||
The
|
||||
.Fn asctime_r
|
||||
function
|
||||
provides the same functionality as
|
||||
.Fn asctime
|
||||
except the caller provide the output buffer
|
||||
.Fa buf
|
||||
to store the result, which must be at least 26 characters long.
|
||||
.Pp
|
||||
The functions
|
||||
.Fn mktime
|
||||
and
|
||||
.Fn timegm
|
||||
convert the broken-down time in the structure
|
||||
pointed to by tm into a time value with the same encoding as that of the
|
||||
values returned by the
|
||||
.Xr time 3
|
||||
function (that is, seconds from the Epoch,
|
||||
.Tn UTC ) .
|
||||
The
|
||||
.Fn mktime
|
||||
function
|
||||
interprets the input structure according to the current timezone setting
|
||||
(see
|
||||
.Xr tzset 3 ) .
|
||||
The
|
||||
.Fn timegm
|
||||
function
|
||||
interprets the input structure as representing Universal Coordinated Time
|
||||
.Pq Tn UTC .
|
||||
.Pp
|
||||
The original values of the
|
||||
.Fa tm_wday
|
||||
and
|
||||
.Fa tm_yday
|
||||
components of the structure are ignored, and the original values of the
|
||||
other components are not restricted to their normal ranges, and will be
|
||||
normalized if needed.
|
||||
For example,
|
||||
October 40 is changed into November 9,
|
||||
a
|
||||
.Fa tm_hour
|
||||
of \-1 means 1 hour before midnight,
|
||||
.Fa tm_mday
|
||||
of 0 means the day preceding the current month, and
|
||||
.Fa tm_mon
|
||||
of \-2 means 2 months before January of
|
||||
.Fa tm_year .
|
||||
(A positive or zero value for
|
||||
.Fa tm_isdst
|
||||
causes
|
||||
.Fn mktime
|
||||
to presume initially that summer time (for example, Daylight Saving Time)
|
||||
is or is not in effect for the specified time, respectively.
|
||||
A negative value for
|
||||
.Fa tm_isdst
|
||||
causes the
|
||||
.Fn mktime
|
||||
function to attempt to divine whether summer time is in effect for the
|
||||
specified time.
|
||||
The
|
||||
.Fa tm_isdst
|
||||
and
|
||||
.Fa tm_gmtoff
|
||||
members are forced to zero by
|
||||
.Fn timegm . )
|
||||
.Pp
|
||||
On successful completion, the values of the
|
||||
.Fa tm_wday
|
||||
and
|
||||
.Fa tm_yday
|
||||
components of the structure are set appropriately, and the other components
|
||||
are set to represent the specified calendar time, but with their values
|
||||
forced to their normal ranges; the final value of
|
||||
.Fa tm_mday
|
||||
is not set until
|
||||
.Fa tm_mon
|
||||
and
|
||||
.Fa tm_year
|
||||
are determined.
|
||||
The
|
||||
.Fn mktime
|
||||
function
|
||||
returns the specified calendar time; if the calendar time cannot be
|
||||
represented, it returns \-1;
|
||||
.Pp
|
||||
The
|
||||
.Fn difftime
|
||||
function
|
||||
returns the difference between two calendar times,
|
||||
.Pf ( Fa time1
|
||||
-
|
||||
.Fa time0 ) ,
|
||||
expressed in seconds.
|
||||
.Pp
|
||||
External declarations as well as the tm structure definition are in the
|
||||
.In time.h
|
||||
include file.
|
||||
The tm structure includes at least the following fields:
|
||||
.Bd -literal -offset indent
|
||||
int tm_sec; /\(** seconds (0 - 60) \(**/
|
||||
int tm_min; /\(** minutes (0 - 59) \(**/
|
||||
int tm_hour; /\(** hours (0 - 23) \(**/
|
||||
int tm_mday; /\(** day of month (1 - 31) \(**/
|
||||
int tm_mon; /\(** month of year (0 - 11) \(**/
|
||||
int tm_year; /\(** year \- 1900 \(**/
|
||||
int tm_wday; /\(** day of week (Sunday = 0) \(**/
|
||||
int tm_yday; /\(** day of year (0 - 365) \(**/
|
||||
int tm_isdst; /\(** is summer time in effect? \(**/
|
||||
char \(**tm_zone; /\(** abbreviation of timezone name \(**/
|
||||
long tm_gmtoff; /\(** offset from UTC in seconds \(**/
|
||||
.Ed
|
||||
.Pp
|
||||
The
|
||||
field
|
||||
.Fa tm_isdst
|
||||
is non-zero if summer time is in effect.
|
||||
.Pp
|
||||
The field
|
||||
.Fa tm_gmtoff
|
||||
is the offset (in seconds) of the time represented from
|
||||
.Tn UTC ,
|
||||
with positive
|
||||
values indicating east of the Prime Meridian.
|
||||
.Sh SEE ALSO
|
||||
.Xr date 1 ,
|
||||
.Xr gettimeofday 2 ,
|
||||
.Xr getenv 3 ,
|
||||
.Xr time 3 ,
|
||||
.Xr tzset 3 ,
|
||||
.Xr tzfile 5
|
||||
.Sh STANDARDS
|
||||
The
|
||||
.Fn asctime ,
|
||||
.Fn ctime ,
|
||||
.Fn difftime ,
|
||||
.Fn gmtime ,
|
||||
.Fn localtime ,
|
||||
and
|
||||
.Fn mktime
|
||||
functions conform to
|
||||
.St -isoC ,
|
||||
and conform to
|
||||
.St -p1003.1-96
|
||||
provided the selected local timezone does not contain a leap-second table
|
||||
(see
|
||||
.Xr zic 8 ) .
|
||||
.Pp
|
||||
The
|
||||
.Fn asctime_r ,
|
||||
.Fn ctime_r ,
|
||||
.Fn gmtime_r ,
|
||||
and
|
||||
.Fn localtime_r
|
||||
functions are expected to conform to
|
||||
.St -p1003.1-96
|
||||
(again provided the selected local timezone does not contain a leap-second
|
||||
table).
|
||||
.Pp
|
||||
The
|
||||
.Fn timegm
|
||||
function is not specified by any standard; its function cannot be
|
||||
completely emulated using the standard functions described above.
|
||||
.Sh HISTORY
|
||||
This manual page is derived from
|
||||
the time package contributed to Berkeley by
|
||||
.An Arthur Olson
|
||||
and which appeared in
|
||||
.Bx 4.3 .
|
||||
.Sh BUGS
|
||||
Except for
|
||||
.Fn difftime ,
|
||||
.Fn mktime ,
|
||||
and the
|
||||
.Fn \&_r
|
||||
variants of the other functions,
|
||||
these functions leaves their result in an internal static object and return
|
||||
a pointer to that object.
|
||||
Subsequent calls to these
|
||||
function will modify the same object.
|
||||
.Pp
|
||||
The C Standard provides no mechanism for a program to modify its current
|
||||
local timezone setting, and the
|
||||
.Tn POSIX Ns No \&-standard
|
||||
method is not reentrant.
|
||||
(However, thread-safe implementations are provided
|
||||
in the
|
||||
.Tn POSIX
|
||||
threaded environment.)
|
||||
.Pp
|
||||
The
|
||||
.Va tm_zone
|
||||
field of a returned
|
||||
.Vt tm
|
||||
structure points to a static array of characters,
|
||||
which will also be overwritten by any subsequent calls (as well as by
|
||||
subsequent calls to
|
||||
.Xr tzset 3
|
||||
and
|
||||
.Xr tzsetwall 3 ) .
|
||||
.Pp
|
||||
Use of the external variable
|
||||
.Fa tzname
|
||||
is discouraged; the
|
||||
.Fa tm_zone
|
||||
entry in the tm structure is preferred.
|
||||
|
|
@ -1,69 +0,0 @@
|
|||
/*
|
||||
** This file is in the public domain, so clarified as of
|
||||
** 1996-06-05 by Arthur David Olson.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
#ifndef lint
|
||||
#ifndef NOID
|
||||
static char elsieid[] __unused = "@(#)difftime.c 8.1";
|
||||
#endif /* !defined NOID */
|
||||
#endif /* !defined lint */
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
/*LINTLIBRARY*/
|
||||
|
||||
#include "namespace.h"
|
||||
#include "private.h" /* for time_t, TYPE_INTEGRAL, and TYPE_SIGNED */
|
||||
#include "un-namespace.h"
|
||||
|
||||
double
|
||||
difftime(time1, time0)
|
||||
const time_t time1;
|
||||
const time_t time0;
|
||||
{
|
||||
/*
|
||||
** If (sizeof (double) > sizeof (time_t)) simply convert and subtract
|
||||
** (assuming that the larger type has more precision).
|
||||
** This is the common real-world case circa 2004.
|
||||
*/
|
||||
if (sizeof (double) > sizeof (time_t))
|
||||
return (double) time1 - (double) time0;
|
||||
if (!TYPE_INTEGRAL(time_t)) {
|
||||
/*
|
||||
** time_t is floating.
|
||||
*/
|
||||
return time1 - time0;
|
||||
}
|
||||
if (!TYPE_SIGNED(time_t)) {
|
||||
/*
|
||||
** time_t is integral and unsigned.
|
||||
** The difference of two unsigned values can't overflow
|
||||
** if the minuend is greater than or equal to the subtrahend.
|
||||
*/
|
||||
if (time1 >= time0)
|
||||
return time1 - time0;
|
||||
else return -((double) (time0 - time1));
|
||||
}
|
||||
/*
|
||||
** time_t is integral and signed.
|
||||
** Handle cases where both time1 and time0 have the same sign
|
||||
** (meaning that their difference cannot overflow).
|
||||
*/
|
||||
if ((time1 < 0) == (time0 < 0))
|
||||
return time1 - time0;
|
||||
/*
|
||||
** time1 and time0 have opposite signs.
|
||||
** Punt if unsigned long is too narrow.
|
||||
*/
|
||||
if (sizeof (unsigned long) < sizeof (time_t))
|
||||
return (double) time1 - (double) time0;
|
||||
/*
|
||||
** Stay calm...decent optimizers will eliminate the complexity below.
|
||||
*/
|
||||
if (time1 >= 0 /* && time0 < 0 */)
|
||||
return (unsigned long) time1 +
|
||||
(unsigned long) (-(time0 + 1)) + 1;
|
||||
return -(double) ((unsigned long) time0 +
|
||||
(unsigned long) (-(time1 + 1)) + 1);
|
||||
}
|
||||
File diff suppressed because it is too large
Load diff
|
|
@ -1,326 +0,0 @@
|
|||
#ifndef PRIVATE_H
|
||||
|
||||
#define PRIVATE_H
|
||||
|
||||
/*
|
||||
** This file is in the public domain, so clarified as of
|
||||
** 1996-06-05 by Arthur David Olson.
|
||||
**
|
||||
** $FreeBSD$
|
||||
*/
|
||||
|
||||
/* Stuff moved from Makefile.inc to reduce clutter */
|
||||
#ifndef TM_GMTOFF
|
||||
#define TM_GMTOFF tm_gmtoff
|
||||
#define TM_ZONE tm_zone
|
||||
#define STD_INSPIRED 1
|
||||
#define PCTS 1
|
||||
#define HAVE_LONG_DOUBLE 1
|
||||
#define HAVE_STRERROR 1
|
||||
#define HAVE_UNISTD_H 1
|
||||
#define LOCALE_HOME _PATH_LOCALE
|
||||
#define TZDIR "/usr/share/zoneinfo"
|
||||
#endif /* ndef TM_GMTOFF */
|
||||
|
||||
/*
|
||||
** This header is for use ONLY with the time conversion code.
|
||||
** There is no guarantee that it will remain unchanged,
|
||||
** or that it will remain at all.
|
||||
** Do NOT copy it to any system include directory.
|
||||
** Thank you!
|
||||
*/
|
||||
|
||||
/*
|
||||
** ID
|
||||
*/
|
||||
|
||||
#ifndef lint
|
||||
#ifndef NOID
|
||||
/*
|
||||
static char privatehid[] = "@(#)private.h 8.6";
|
||||
*/
|
||||
#endif /* !defined NOID */
|
||||
#endif /* !defined lint */
|
||||
|
||||
#define GRANDPARENTED "Local time zone must be set--see zic manual page"
|
||||
|
||||
/*
|
||||
** Defaults for preprocessor symbols.
|
||||
** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
|
||||
*/
|
||||
|
||||
#ifndef HAVE_ADJTIME
|
||||
#define HAVE_ADJTIME 1
|
||||
#endif /* !defined HAVE_ADJTIME */
|
||||
|
||||
#ifndef HAVE_GETTEXT
|
||||
#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_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 */
|
||||
|
||||
#ifndef HAVE_UTMPX_H
|
||||
#define HAVE_UTMPX_H 0
|
||||
#endif /* !defined HAVE_UTMPX_H */
|
||||
|
||||
#ifndef LOCALE_HOME
|
||||
#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
|
||||
*/
|
||||
|
||||
#include "sys/types.h" /* for time_t */
|
||||
#include "stdio.h"
|
||||
#include "errno.h"
|
||||
#include "string.h"
|
||||
#include "limits.h" /* for CHAR_BIT et al. */
|
||||
#include "time.h"
|
||||
#include "stdlib.h"
|
||||
|
||||
#if HAVE_GETTEXT
|
||||
#include "libintl.h"
|
||||
#endif /* HAVE_GETTEXT */
|
||||
|
||||
#if HAVE_SYS_WAIT_H
|
||||
#include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */
|
||||
#endif /* HAVE_SYS_WAIT_H */
|
||||
|
||||
#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
|
||||
#include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */
|
||||
#endif /* HAVE_UNISTD_H */
|
||||
|
||||
#if !(HAVE_UNISTD_H)
|
||||
#ifndef F_OK
|
||||
#define F_OK 0
|
||||
#endif /* !defined F_OK */
|
||||
#ifndef R_OK
|
||||
#define R_OK 4
|
||||
#endif /* !defined R_OK */
|
||||
#endif /* !(HAVE_UNISTD_H) */
|
||||
|
||||
/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
|
||||
#define is_digit(c) ((unsigned)(c) - '0' <= 9)
|
||||
|
||||
/*
|
||||
** Define HAVE_STDINT_H's default value here, rather than at the
|
||||
** start, since __GLIBC__'s value depends on previously-included
|
||||
** files.
|
||||
** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.)
|
||||
*/
|
||||
#ifndef HAVE_STDINT_H
|
||||
#define HAVE_STDINT_H \
|
||||
(199901 <= __STDC_VERSION__ || \
|
||||
2 < (__GLIBC__ + (0 < __GLIBC_MINOR__)))
|
||||
#endif /* !defined HAVE_STDINT_H */
|
||||
|
||||
#if HAVE_STDINT_H
|
||||
#include "stdint.h"
|
||||
#endif /* !HAVE_STDINT_H */
|
||||
|
||||
#ifndef INT_FAST64_MAX
|
||||
/* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */
|
||||
#if defined LLONG_MAX || defined __LONG_LONG_MAX__
|
||||
typedef long long int_fast64_t;
|
||||
#else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
|
||||
#if (LONG_MAX >> 31) < 0xffffffff
|
||||
Please use a compiler that supports a 64-bit integer type (or wider);
|
||||
you may need to compile with "-DHAVE_STDINT_H".
|
||||
#endif /* (LONG_MAX >> 31) < 0xffffffff */
|
||||
typedef long int_fast64_t;
|
||||
#endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
|
||||
#endif /* !defined INT_FAST64_MAX */
|
||||
|
||||
#ifndef INT32_MAX
|
||||
#define INT32_MAX 0x7fffffff
|
||||
#endif /* !defined INT32_MAX */
|
||||
#ifndef INT32_MIN
|
||||
#define INT32_MIN (-1 - INT32_MAX)
|
||||
#endif /* !defined INT32_MIN */
|
||||
|
||||
/*
|
||||
** Workarounds for compilers/systems.
|
||||
*/
|
||||
|
||||
/*
|
||||
** Some time.h implementations don't declare asctime_r.
|
||||
** Others might define it as a macro.
|
||||
** Fix the former without affecting the latter.
|
||||
*/
|
||||
|
||||
#ifndef asctime_r
|
||||
extern char * asctime_r(struct tm const *, char *);
|
||||
#endif
|
||||
|
||||
/*
|
||||
** Private function declarations.
|
||||
*/
|
||||
|
||||
char * icalloc(int nelem, int elsize);
|
||||
char * icatalloc(char * old, const char * new);
|
||||
char * icpyalloc(const char * string);
|
||||
char * imalloc(int n);
|
||||
void * irealloc(void * pointer, int size);
|
||||
void icfree(char * pointer);
|
||||
void ifree(char * pointer);
|
||||
const char * scheck(const char * string, const char * format);
|
||||
|
||||
/*
|
||||
** Finally, some convenience items.
|
||||
*/
|
||||
|
||||
#ifndef TRUE
|
||||
#define TRUE 1
|
||||
#endif /* !defined TRUE */
|
||||
|
||||
#ifndef FALSE
|
||||
#define FALSE 0
|
||||
#endif /* !defined FALSE */
|
||||
|
||||
#ifndef TYPE_BIT
|
||||
#define TYPE_BIT(type) (sizeof (type) * CHAR_BIT)
|
||||
#endif /* !defined TYPE_BIT */
|
||||
|
||||
#ifndef TYPE_SIGNED
|
||||
#define TYPE_SIGNED(type) (((type) -1) < 0)
|
||||
#endif /* !defined TYPE_SIGNED */
|
||||
|
||||
/*
|
||||
** Since the definition of TYPE_INTEGRAL contains floating point numbers,
|
||||
** it cannot be used in preprocessor directives.
|
||||
*/
|
||||
|
||||
#ifndef TYPE_INTEGRAL
|
||||
#define TYPE_INTEGRAL(type) (((type) 0.5) != 0.5)
|
||||
#endif /* !defined TYPE_INTEGRAL */
|
||||
|
||||
/*
|
||||
** Since the definition of TYPE_INTEGRAL contains floating point numbers,
|
||||
** it cannot be used in preprocessor directives.
|
||||
*/
|
||||
|
||||
#ifndef TYPE_INTEGRAL
|
||||
#define TYPE_INTEGRAL(type) (((type) 0.5) != 0.5)
|
||||
#endif /* !defined TYPE_INTEGRAL */
|
||||
|
||||
#ifndef INT_STRLEN_MAXIMUM
|
||||
/*
|
||||
** 302 / 1000 is log10(2.0) rounded up.
|
||||
** Subtract one for the sign bit if the type is signed;
|
||||
** add one for integer division truncation;
|
||||
** add one more for a minus sign if the type is signed.
|
||||
*/
|
||||
#define INT_STRLEN_MAXIMUM(type) \
|
||||
((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
|
||||
1 + TYPE_SIGNED(type))
|
||||
#endif /* !defined INT_STRLEN_MAXIMUM */
|
||||
|
||||
/*
|
||||
** INITIALIZE(x)
|
||||
*/
|
||||
|
||||
#ifndef GNUC_or_lint
|
||||
#ifdef lint
|
||||
#define GNUC_or_lint
|
||||
#endif /* defined lint */
|
||||
#ifndef lint
|
||||
#ifdef __GNUC__
|
||||
#define GNUC_or_lint
|
||||
#endif /* defined __GNUC__ */
|
||||
#endif /* !defined lint */
|
||||
#endif /* !defined GNUC_or_lint */
|
||||
|
||||
#ifndef INITIALIZE
|
||||
#ifdef GNUC_or_lint
|
||||
#define INITIALIZE(x) ((x) = 0)
|
||||
#endif /* defined GNUC_or_lint */
|
||||
#ifndef GNUC_or_lint
|
||||
#define INITIALIZE(x)
|
||||
#endif /* !defined GNUC_or_lint */
|
||||
#endif /* !defined INITIALIZE */
|
||||
|
||||
/*
|
||||
** For the benefit of GNU folk...
|
||||
** `_(MSGID)' uses the current locale's message library string for MSGID.
|
||||
** The default is to use gettext if available, and use MSGID otherwise.
|
||||
*/
|
||||
|
||||
#ifndef _
|
||||
#if HAVE_GETTEXT
|
||||
#define _(msgid) gettext(msgid)
|
||||
#else /* !HAVE_GETTEXT */
|
||||
#define _(msgid) msgid
|
||||
#endif /* !HAVE_GETTEXT */
|
||||
#endif /* !defined _ */
|
||||
|
||||
#ifndef TZ_DOMAIN
|
||||
#define TZ_DOMAIN "tz"
|
||||
#endif /* !defined TZ_DOMAIN */
|
||||
|
||||
#if HAVE_INCOMPATIBLE_CTIME_R
|
||||
#undef asctime_r
|
||||
#undef ctime_r
|
||||
char *asctime_r(struct tm const *, char *);
|
||||
char *ctime_r(time_t const *, char *);
|
||||
#endif /* HAVE_INCOMPATIBLE_CTIME_R */
|
||||
|
||||
#ifndef YEARSPERREPEAT
|
||||
#define YEARSPERREPEAT 400 /* years before a Gregorian repeat */
|
||||
#endif /* !defined YEARSPERREPEAT */
|
||||
|
||||
/*
|
||||
** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
|
||||
*/
|
||||
|
||||
#ifndef AVGSECSPERYEAR
|
||||
#define AVGSECSPERYEAR 31556952L
|
||||
#endif /* !defined AVGSECSPERYEAR */
|
||||
|
||||
#ifndef SECSPERREPEAT
|
||||
#define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
|
||||
#endif /* !defined SECSPERREPEAT */
|
||||
|
||||
#ifndef SECSPERREPEAT_BITS
|
||||
#define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */
|
||||
#endif /* !defined SECSPERREPEAT_BITS */
|
||||
|
||||
/*
|
||||
** UNIX was a registered trademark of The Open Group in 2003.
|
||||
*/
|
||||
|
||||
#endif /* !defined PRIVATE_H */
|
||||
|
|
@ -1,123 +0,0 @@
|
|||
.\" $FreeBSD$
|
||||
.\"
|
||||
.Dd September 11, 2005
|
||||
.Dt TIME2POSIX 3
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm time2posix ,
|
||||
.Nm posix2time
|
||||
.Nd convert seconds since the Epoch
|
||||
.Sh LIBRARY
|
||||
.Lb libc
|
||||
.Sh SYNOPSIS
|
||||
.In time.h
|
||||
.Ft time_t
|
||||
.Fn time2posix "time_t t"
|
||||
.Ft time_t
|
||||
.Fn posix2time "time_t t"
|
||||
.Sh DESCRIPTION
|
||||
.St -p1003.1-88
|
||||
legislates that a time_t value of
|
||||
536457599 shall correspond to "Wed Dec 31 23:59:59 GMT 1986."
|
||||
This effectively implies that POSIX time_t's cannot include leap
|
||||
seconds and,
|
||||
therefore,
|
||||
that the system time must be adjusted as each leap occurs.
|
||||
.Pp
|
||||
If the time package is configured with leap-second support
|
||||
enabled,
|
||||
however,
|
||||
no such adjustment is needed and
|
||||
time_t values continue to increase over leap events
|
||||
(as a true `seconds since...' value).
|
||||
This means that these values will differ from those required by POSIX
|
||||
by the net number of leap seconds inserted since the Epoch.
|
||||
.Pp
|
||||
Typically this is not a problem as the type time_t is intended
|
||||
to be
|
||||
(mostly)
|
||||
opaque\(emtime_t values should only be obtained-from and
|
||||
passed-to functions such as
|
||||
.Xr time 3 ,
|
||||
.Xr localtime 3 ,
|
||||
.Xr mktime 3
|
||||
and
|
||||
.Xr difftime 3 .
|
||||
However,
|
||||
.St -p1003.1-88
|
||||
gives an arithmetic
|
||||
expression for directly computing a time_t value from a given date/time,
|
||||
and the same relationship is assumed by some
|
||||
(usually older)
|
||||
applications.
|
||||
Any programs creating/dissecting time_t's
|
||||
using such a relationship will typically not handle intervals
|
||||
over leap seconds correctly.
|
||||
.Pp
|
||||
The
|
||||
.Fn time2posix
|
||||
and
|
||||
.Fn posix2time
|
||||
functions are provided to address this time_t mismatch by converting
|
||||
between local time_t values and their POSIX equivalents.
|
||||
This is done by accounting for the number of time-base changes that
|
||||
would have taken place on a POSIX system as leap seconds were inserted
|
||||
or deleted.
|
||||
These converted values can then be used in lieu of correcting the older
|
||||
applications,
|
||||
or when communicating with POSIX-compliant systems.
|
||||
.Pp
|
||||
The
|
||||
.Fn time2posix
|
||||
function is single-valued.
|
||||
That is,
|
||||
every local time_t
|
||||
corresponds to a single POSIX time_t.
|
||||
The
|
||||
.Fn posix2time
|
||||
function is less well-behaved:
|
||||
for a positive leap second hit the result is not unique,
|
||||
and for a negative leap second hit the corresponding
|
||||
POSIX time_t does not exist so an adjacent value is returned.
|
||||
Both of these are good indicators of the inferiority of the
|
||||
POSIX representation.
|
||||
.Pp
|
||||
The following table summarizes the relationship between time_t
|
||||
and its conversion to,
|
||||
and back from,
|
||||
the POSIX representation over the leap second inserted at the end of June,
|
||||
1993.
|
||||
.Bl -column "93/06/30" "23:59:59" "A+0" "X=time2posix(T)"
|
||||
.It Sy "DATE TIME T X=time2posix(T) posix2time(X)"
|
||||
.It "93/06/30 23:59:59 A+0 B+0 A+0"
|
||||
.It "93/06/30 23:59:60 A+1 B+1 A+1 or A+2"
|
||||
.It "93/07/01 00:00:00 A+2 B+1 A+1 or A+2"
|
||||
.It "93/07/01 00:00:01 A+3 B+2 A+3"
|
||||
.El
|
||||
.Pp
|
||||
A leap second deletion would look like...
|
||||
.Bl -column "??/06/30" "23:59:58" "A+0" "X=time2posix(T)"
|
||||
.It Sy "DATE TIME T X=time2posix(T) posix2time(X)"
|
||||
.It "??/06/30 23:59:58 A+0 B+0 A+0"
|
||||
.It "??/07/01 00:00:00 A+1 B+2 A+1"
|
||||
.It "??/07/01 00:00:01 A+2 B+3 A+2"
|
||||
.El
|
||||
.Pp
|
||||
.D1 No "[Note: posix2time(B+1) => A+0 or A+1]"
|
||||
.Pp
|
||||
If leap-second support is not enabled,
|
||||
local time_t's and
|
||||
POSIX time_t's are equivalent,
|
||||
and both
|
||||
.Fn time2posix
|
||||
and
|
||||
.Fn posix2time
|
||||
degenerate to the identity function.
|
||||
.Sh "SEE ALSO"
|
||||
.Xr difftime 3 ,
|
||||
.Xr localtime 3 ,
|
||||
.Xr mktime 3 ,
|
||||
.Xr time 3
|
||||
.\" @(#)time2posix.3 8.2
|
||||
.\" This file is in the public domain, so clarified as of
|
||||
.\" 1996-06-05 by Arthur David Olson.
|
||||
|
|
@ -1,152 +0,0 @@
|
|||
.\" $FreeBSD$
|
||||
.Dd September 13, 1994
|
||||
.Dt TZFILE 5
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm tzfile
|
||||
.Nd timezone information
|
||||
.Sh SYNOPSIS
|
||||
.Fd #include \&"/usr/src/lib/libc/stdtime/tzfile.h\&"
|
||||
.Sh DESCRIPTION
|
||||
The time zone information files used by
|
||||
.Xr tzset 3
|
||||
begin with the magic characters
|
||||
.Dq Li TZif
|
||||
to identify them as
|
||||
time zone information files,
|
||||
followed by a character identifying the version of the file's format
|
||||
(as of 2005, either an ASCII NUL or a '2')
|
||||
followed by fifteen bytes containing zeroes reserved for future use,
|
||||
followed by four four-byte values
|
||||
written in a ``standard'' byte order
|
||||
(the high-order byte of the value is written first).
|
||||
These values are,
|
||||
in order:
|
||||
.Pp
|
||||
.Bl -tag -compact -width tzh_ttisstdcnt
|
||||
.It Va tzh_ttisgmtcnt
|
||||
The number of UTC/local indicators stored in the file.
|
||||
.It Va tzh_ttisstdcnt
|
||||
The number of standard/wall indicators stored in the file.
|
||||
.It Va tzh_leapcnt
|
||||
The number of leap seconds for which data is stored in the file.
|
||||
.It Va tzh_timecnt
|
||||
The number of ``transition times'' for which data is stored
|
||||
in the file.
|
||||
.It Va tzh_typecnt
|
||||
The number of ``local time types'' for which data is stored
|
||||
in the file (must not be zero).
|
||||
.It Va tzh_charcnt
|
||||
The number of characters of ``time zone abbreviation strings''
|
||||
stored in the file.
|
||||
.El
|
||||
.Pp
|
||||
The above header is followed by
|
||||
.Va tzh_timecnt
|
||||
four-byte values of type
|
||||
.Fa long ,
|
||||
sorted in ascending order.
|
||||
These values are written in ``standard'' byte order.
|
||||
Each is used as a transition time (as returned by
|
||||
.Xr time 3 )
|
||||
at which the rules for computing local time change.
|
||||
Next come
|
||||
.Va tzh_timecnt
|
||||
one-byte values of type
|
||||
.Fa "unsigned char" ;
|
||||
each one tells which of the different types of ``local time'' types
|
||||
described in the file is associated with the same-indexed transition time.
|
||||
These values serve as indices into an array of
|
||||
.Fa ttinfo
|
||||
structures (with
|
||||
.Fa tzh_typecnt
|
||||
entries) that appears next in the file;
|
||||
these structures are defined as follows:
|
||||
.Pp
|
||||
.Bd -literal -offset indent
|
||||
struct ttinfo {
|
||||
long tt_gmtoff;
|
||||
int tt_isdst;
|
||||
unsigned int tt_abbrind;
|
||||
};
|
||||
.Ed
|
||||
.Pp
|
||||
Each structure is written as a four-byte value for
|
||||
.Va tt_gmtoff
|
||||
of type
|
||||
.Fa long ,
|
||||
in a standard byte order, followed by a one-byte value for
|
||||
.Va tt_isdst
|
||||
and a one-byte value for
|
||||
.Va tt_abbrind .
|
||||
In each structure,
|
||||
.Va tt_gmtoff
|
||||
gives the number of seconds to be added to UTC,
|
||||
.Li tt_isdst
|
||||
tells whether
|
||||
.Li tm_isdst
|
||||
should be set by
|
||||
.Xr localtime 3
|
||||
and
|
||||
.Va tt_abbrind
|
||||
serves as an index into the array of time zone abbreviation characters
|
||||
that follow the
|
||||
.Li ttinfo
|
||||
structure(s) in the file.
|
||||
.Pp
|
||||
Then there are
|
||||
.Va tzh_leapcnt
|
||||
pairs of four-byte values, written in standard byte order;
|
||||
the first value of each pair gives the time
|
||||
(as returned by
|
||||
.Xr time 3 )
|
||||
at which a leap second occurs;
|
||||
the second gives the
|
||||
.Em total
|
||||
number of leap seconds to be applied after the given time.
|
||||
The pairs of values are sorted in ascending order by time.
|
||||
.Pp
|
||||
Then there are
|
||||
.Va tzh_ttisstdcnt
|
||||
standard/wall indicators, each stored as a one-byte value;
|
||||
they tell whether the transition times associated with local time types
|
||||
were specified as standard time or wall clock time,
|
||||
and are used when a time zone file is used in handling POSIX-style
|
||||
time zone environment variables.
|
||||
.Pp
|
||||
Finally there are
|
||||
.Va tzh_ttisgmtcnt
|
||||
UTC/local indicators, each stored as a one-byte value;
|
||||
they tell whether the transition times associated with local time types
|
||||
were specified as UTC or local time,
|
||||
and are used when a time zone file is used in handling POSIX-style
|
||||
time zone environment variables.
|
||||
.Pp
|
||||
.Nm localtime
|
||||
uses the first standard-time
|
||||
.Li ttinfo
|
||||
structure in the file
|
||||
(or simply the first
|
||||
.Li ttinfo
|
||||
structure in the absence of a standard-time structure)
|
||||
if either
|
||||
.Li tzh_timecnt
|
||||
is zero or the time argument is less than the first transition time recorded
|
||||
in the file.
|
||||
.Pp
|
||||
For version-2-format time zone files,
|
||||
the above header and data is followed by a second header and data,
|
||||
identical in format except that eight bytes are used for each
|
||||
transition time or leap second time.
|
||||
After the second header and data comes a newline-enclosed,
|
||||
POSIX-TZ-environment-variable-style string for use in handling instants
|
||||
after the last transition time stored in the file
|
||||
(with nothing between the newlines if there is no POSIX representation for
|
||||
such instants).
|
||||
.Sh SEE ALSO
|
||||
.Xr ctime 3 ,
|
||||
.Xr time2posix 3 ,
|
||||
.Xr zic 8
|
||||
.\" @(#)tzfile.5 8.3
|
||||
.\" This file is in the public domain, so clarified as of
|
||||
.\" 1996-06-05 by Arthur David Olson.
|
||||
|
|
@ -1,184 +0,0 @@
|
|||
#ifndef TZFILE_H
|
||||
#define TZFILE_H
|
||||
|
||||
|
||||
/*
|
||||
** This file is in the public domain, so clarified as of
|
||||
** 1996-06-05 by Arthur David Olson.
|
||||
**
|
||||
** $FreeBSD$
|
||||
*/
|
||||
|
||||
/*
|
||||
** This header is for use ONLY with the time conversion code.
|
||||
** There is no guarantee that it will remain unchanged,
|
||||
** or that it will remain at all.
|
||||
** Do NOT copy it to any system include directory.
|
||||
** Thank you!
|
||||
*/
|
||||
|
||||
/*
|
||||
** ID
|
||||
*/
|
||||
|
||||
#ifndef lint
|
||||
#ifndef NOID
|
||||
/*
|
||||
static char tzfilehid[] = "@(#)tzfile.h 8.1";
|
||||
*/
|
||||
#endif /* !defined NOID */
|
||||
#endif /* !defined lint */
|
||||
|
||||
/*
|
||||
** Information about time zone files.
|
||||
*/
|
||||
|
||||
#ifndef TZDIR
|
||||
#define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */
|
||||
#endif /* !defined TZDIR */
|
||||
|
||||
#ifndef TZDEFAULT
|
||||
#define TZDEFAULT "/etc/localtime"
|
||||
#endif /* !defined TZDEFAULT */
|
||||
|
||||
#ifndef TZDEFRULES
|
||||
#define TZDEFRULES "posixrules"
|
||||
#endif /* !defined TZDEFRULES */
|
||||
|
||||
/*
|
||||
** Each file begins with. . .
|
||||
*/
|
||||
|
||||
#define TZ_MAGIC "TZif"
|
||||
|
||||
struct tzhead {
|
||||
char tzh_magic[4]; /* TZ_MAGIC */
|
||||
char tzh_version[1]; /* '\0' or '2' as of 2005 */
|
||||
char tzh_reserved[15]; /* reserved--must be zero */
|
||||
char tzh_ttisgmtcnt[4]; /* coded number of trans. time flags */
|
||||
char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
|
||||
char tzh_leapcnt[4]; /* coded number of leap seconds */
|
||||
char tzh_timecnt[4]; /* coded number of transition times */
|
||||
char tzh_typecnt[4]; /* coded number of local time types */
|
||||
char tzh_charcnt[4]; /* coded number of abbr. chars */
|
||||
};
|
||||
|
||||
/*
|
||||
** . . .followed by. . .
|
||||
**
|
||||
** tzh_timecnt (char [4])s coded transition times a la time(2)
|
||||
** tzh_timecnt (unsigned char)s types of local time starting at above
|
||||
** tzh_typecnt repetitions of
|
||||
** one (char [4]) coded UTC offset in seconds
|
||||
** one (unsigned char) used to set tm_isdst
|
||||
** one (unsigned char) that's an abbreviation list index
|
||||
** tzh_charcnt (char)s '\0'-terminated zone abbreviations
|
||||
** tzh_leapcnt repetitions of
|
||||
** one (char [4]) coded leap second transition times
|
||||
** one (char [4]) total correction after above
|
||||
** tzh_ttisstdcnt (char)s indexed by type; if TRUE, transition
|
||||
** time is standard time, if FALSE,
|
||||
** transition time is wall clock time
|
||||
** if absent, transition times are
|
||||
** assumed to be wall clock time
|
||||
** tzh_ttisgmtcnt (char)s indexed by type; if TRUE, transition
|
||||
** time is UTC, if FALSE,
|
||||
** transition time is local time
|
||||
** if absent, transition times are
|
||||
** assumed to be local time
|
||||
*/
|
||||
|
||||
/*
|
||||
** If tzh_version is '2' or greater, the above is followed by a second instance
|
||||
** of tzhead and a second instance of the data in which each coded transition
|
||||
** time uses 8 rather than 4 chars,
|
||||
** then a POSIX-TZ-environment-variable-style string for use in handling
|
||||
** instants after the last transition time stored in the file
|
||||
** (with nothing between the newlines if there is no POSIX representation for
|
||||
** such instants).
|
||||
*/
|
||||
|
||||
/*
|
||||
** In the current implementation, "tzset()" refuses to deal with files that
|
||||
** exceed any of the limits below.
|
||||
*/
|
||||
|
||||
#ifndef TZ_MAX_TIMES
|
||||
#define TZ_MAX_TIMES 1200
|
||||
#endif /* !defined TZ_MAX_TIMES */
|
||||
|
||||
#ifndef TZ_MAX_TYPES
|
||||
#ifndef NOSOLAR
|
||||
#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
|
||||
#endif /* !defined NOSOLAR */
|
||||
#ifdef NOSOLAR
|
||||
/*
|
||||
** Must be at least 14 for Europe/Riga as of Jan 12 1995,
|
||||
** as noted by Earl Chew.
|
||||
*/
|
||||
#define TZ_MAX_TYPES 20 /* Maximum number of local time types */
|
||||
#endif /* !defined NOSOLAR */
|
||||
#endif /* !defined TZ_MAX_TYPES */
|
||||
|
||||
#ifndef TZ_MAX_CHARS
|
||||
#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
|
||||
/* (limited by what unsigned chars can hold) */
|
||||
#endif /* !defined TZ_MAX_CHARS */
|
||||
|
||||
#ifndef TZ_MAX_LEAPS
|
||||
#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
|
||||
#endif /* !defined TZ_MAX_LEAPS */
|
||||
|
||||
#define SECSPERMIN 60
|
||||
#define MINSPERHOUR 60
|
||||
#define HOURSPERDAY 24
|
||||
#define DAYSPERWEEK 7
|
||||
#define DAYSPERNYEAR 365
|
||||
#define DAYSPERLYEAR 366
|
||||
#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
|
||||
#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY)
|
||||
#define MONSPERYEAR 12
|
||||
|
||||
#define TM_SUNDAY 0
|
||||
#define TM_MONDAY 1
|
||||
#define TM_TUESDAY 2
|
||||
#define TM_WEDNESDAY 3
|
||||
#define TM_THURSDAY 4
|
||||
#define TM_FRIDAY 5
|
||||
#define TM_SATURDAY 6
|
||||
|
||||
#define TM_JANUARY 0
|
||||
#define TM_FEBRUARY 1
|
||||
#define TM_MARCH 2
|
||||
#define TM_APRIL 3
|
||||
#define TM_MAY 4
|
||||
#define TM_JUNE 5
|
||||
#define TM_JULY 6
|
||||
#define TM_AUGUST 7
|
||||
#define TM_SEPTEMBER 8
|
||||
#define TM_OCTOBER 9
|
||||
#define TM_NOVEMBER 10
|
||||
#define TM_DECEMBER 11
|
||||
|
||||
#define TM_YEAR_BASE 1900
|
||||
|
||||
#define EPOCH_YEAR 1970
|
||||
#define EPOCH_WDAY TM_THURSDAY
|
||||
|
||||
#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
|
||||
|
||||
/*
|
||||
** Since everything in isleap is modulo 400 (or a factor of 400), we know that
|
||||
** isleap(y) == isleap(y % 400)
|
||||
** and so
|
||||
** isleap(a + b) == isleap((a + b) % 400)
|
||||
** or
|
||||
** isleap(a + b) == isleap(a % 400 + b % 400)
|
||||
** This is true even if % means modulo rather than Fortran remainder
|
||||
** (which is allowed by C89 but not C99).
|
||||
** We use this to avoid addition overflow problems.
|
||||
*/
|
||||
|
||||
#define isleap_sum(a, b) isleap((a) % 400 + (b) % 400)
|
||||
|
||||
#endif /* !defined TZFILE_H */
|
||||
|
|
@ -8,7 +8,7 @@ SRCS= zdump.c ialloc.c scheck.c
|
|||
|
||||
CFLAGS+= -DTM_GMTOFF=tm_gmtoff -DTM_ZONE=tm_zone -DSTD_INSPIRED -DPCTS
|
||||
CFLAGS+= -DHAVE_LONG_DOUBLE -DTZDIR=\"/usr/share/zoneinfo\" -Demkdir=mkdir
|
||||
CFLAGS+= -I${.CURDIR}/.. -I${.CURDIR}/../../../lib/libc/stdtime
|
||||
CFLAGS+= -I${.CURDIR}/.. -I${.CURDIR}/../../../contrib/tzcode/stdtime
|
||||
|
||||
WARNS?= 2
|
||||
|
||||
|
|
|
|||
|
|
@ -9,7 +9,7 @@ SRCS= zic.c ialloc.c scheck.c
|
|||
CFLAGS+= -DTM_GMTOFF=tm_gmtoff -DTM_ZONE=tm_zone -DSTD_INSPIRED -DPCTS
|
||||
CFLAGS+= -DHAVE_LONG_DOUBLE -DTZDIR=\"/usr/share/zoneinfo\" -Demkdir=mkdir
|
||||
CFLAGS+= -DHAVE_STRERROR -DHAVE_UNISTD_H
|
||||
CFLAGS+= -I${.CURDIR}/.. -I${.CURDIR}/../../../lib/libc/stdtime
|
||||
CFLAGS+= -I${.CURDIR}/.. -I${.CURDIR}/../../../contrib/tzcode/stdtime
|
||||
|
||||
WARNS?= 2
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue