usr/src/head/tzfile.h - illumos-gate - Gitiles

 /*
  * CDDL HEADER START
  *
  * The contents of this file are subject to the terms of the
  * Common Development and Distribution License (the "License").
  * You may not use this file except in compliance with the License.
  *
  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  * or http://www.opensolaris.org/os/licensing.
  * See the License for the specific language governing permissions
  * and limitations under the License.
  *
  * When distributing Covered Code, include this CDDL HEADER in each
  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  * If applicable, add the following below this CDDL HEADER, with the
  * fields enclosed by brackets "[]" replaced with your own identifying
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
 /*
  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */

 /*	Copyright (c) 1988 AT&T	*/
 /*	  All Rights Reserved	*/

 #ifndef _TZFILE_H
 #define	_TZFILE_H

 #pragma ident	"%Z%%M%	%I%	%E% SMI"

 /*
  * A part of this file comes from public domain source, so
  * clarified as of June 5, 1996 by Arthur David Olson
  */

 #include <sys/types.h>

 /*
  * WARNING:
  * The interfaces defined in this header file are for Sun private use only.
  * The contents of this file are subject to change without notice for the
  * future releases.
  */

 /* For further information, see ctime(3C) and zic(1M) man pages. */

 /*
  * This file is in the public domain, so clarified as of
  * 1996-06-05 by Arthur David Olson.
  */

 /*
  * 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!
  */

 /* static char	tzfilehid[] = "@(#)tzfile.h	7.18"; */

 /*
  * Note: Despite warnings from the authors of this code, Solaris has
  * placed this header file in the system include directory.  This was
  * probably done in order to build both zic and zdump which are in
  * separate source directories, but both use this file.
  */

 #ifdef	__cplusplus
 extern "C" {
 #endif

 /*
  * Information about time zone files.
  */

 #ifndef TZDIR
 #define	TZDIR	"/usr/share/lib/zoneinfo" /* Time zone object file directory */
 #endif /* !defined TZDIR */

 #ifndef TZDEFAULT
 #define	TZDEFAULT	"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_reserved[16];	/* reserved for future use */
 	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
  */

 /*
  * In the current implementation, "tzset()" refuses to deal with files that
  * exceed any of the limits below.
  */

 #ifndef TZ_MAX_TIMES
 /*
  * The TZ_MAX_TIMES value below is enough to handle a bit more than a
  * year's worth of solar time (corrected daily to the nearest second) or
  * 138 years of Pacific Presidential Election time
  * (where there are three time zone transitions every fourth year).
  */
 #define	TZ_MAX_TIMES	370
 #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	((time_t)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))

 #ifndef USG

 /*
  * Use of the underscored variants may cause problems if you move your code to
  * certain System-V-based systems; for maximum portability, use the
  * underscore-free variants.  The underscored variants are provided for
  * backward compatibility only; they may disappear from future versions of
  * this file.
  */

 #define	SECS_PER_MIN	SECSPERMIN
 #define	MINS_PER_HOUR	MINSPERHOUR
 #define	HOURS_PER_DAY	HOURSPERDAY
 #define	DAYS_PER_WEEK	DAYSPERWEEK
 #define	DAYS_PER_NYEAR	DAYSPERNYEAR
 #define	DAYS_PER_LYEAR	DAYSPERLYEAR
 #define	SECS_PER_HOUR	SECSPERHOUR
 #define	SECS_PER_DAY	SECSPERDAY
 #define	MONS_PER_YEAR	MONSPERYEAR

 #endif /* !defined USG */

 /*
  * 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)

 #ifdef	__cplusplus
 }
 #endif

 #endif	/* _TZFILE_H */
	/*
	* CDDL HEADER START
	*
	* The contents of this file are subject to the terms of the
	* Common Development and Distribution License (the "License").
	* You may not use this file except in compliance with the License.
	*
	* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
	* or http://www.opensolaris.org/os/licensing.
	* See the License for the specific language governing permissions
	* and limitations under the License.
	*
	* When distributing Covered Code, include this CDDL HEADER in each
	* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
	* If applicable, add the following below this CDDL HEADER, with the
	* fields enclosed by brackets "[]" replaced with your own identifying
	* information: Portions Copyright [yyyy] [name of copyright owner]
	*
	* CDDL HEADER END
	*/
	/*
	* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
	* Use is subject to license terms.
	*/

	/* Copyright (c) 1988 AT&T */
	/* All Rights Reserved */

	#ifndef _TZFILE_H
	#define _TZFILE_H

	#pragma ident "%Z%%M% %I% %E% SMI"

	/*
	* A part of this file comes from public domain source, so
	* clarified as of June 5, 1996 by Arthur David Olson
	*/

	#include <sys/types.h>

	/*
	* WARNING:
	* The interfaces defined in this header file are for Sun private use only.
	* The contents of this file are subject to change without notice for the
	* future releases.
	*/

	/* For further information, see ctime(3C) and zic(1M) man pages. */

	/*
	* This file is in the public domain, so clarified as of
	* 1996-06-05 by Arthur David Olson.
	*/

	/*
	* 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!
	*/

	/* static char tzfilehid[] = "@(#)tzfile.h 7.18"; */

	/*
	* Note: Despite warnings from the authors of this code, Solaris has
	* placed this header file in the system include directory. This was
	* probably done in order to build both zic and zdump which are in
	* separate source directories, but both use this file.
	*/

	#ifdef __cplusplus
	extern "C" {
	#endif

	/*
	* Information about time zone files.
	*/

	#ifndef TZDIR
	#define TZDIR "/usr/share/lib/zoneinfo" /* Time zone object file directory */
	#endif /* !defined TZDIR */

	#ifndef TZDEFAULT
	#define TZDEFAULT "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_reserved[16]; /* reserved for future use */
	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
	*/

	/*
	* In the current implementation, "tzset()" refuses to deal with files that
	* exceed any of the limits below.
	*/

	#ifndef TZ_MAX_TIMES
	/*
	* The TZ_MAX_TIMES value below is enough to handle a bit more than a
	* year's worth of solar time (corrected daily to the nearest second) or
	* 138 years of Pacific Presidential Election time
	* (where there are three time zone transitions every fourth year).
	*/
	#define TZ_MAX_TIMES 370
	#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 ((time_t)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))

	#ifndef USG

	/*
	* Use of the underscored variants may cause problems if you move your code to
	* certain System-V-based systems; for maximum portability, use the
	* underscore-free variants. The underscored variants are provided for
	* backward compatibility only; they may disappear from future versions of
	* this file.
	*/

	#define SECS_PER_MIN SECSPERMIN
	#define MINS_PER_HOUR MINSPERHOUR
	#define HOURS_PER_DAY HOURSPERDAY
	#define DAYS_PER_WEEK DAYSPERWEEK
	#define DAYS_PER_NYEAR DAYSPERNYEAR
	#define DAYS_PER_LYEAR DAYSPERLYEAR
	#define SECS_PER_HOUR SECSPERHOUR
	#define SECS_PER_DAY SECSPERDAY
	#define MONS_PER_YEAR MONSPERYEAR

	#endif /* !defined USG */

	/*
	* 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)

	#ifdef __cplusplus
	}
	#endif

	#endif /* _TZFILE_H */