[apple/libc.git] / stdtime / tzfile.h

#ifndef TZFILE_H
#define TZFILE_H


/*
** This file is in the public domain, so clarified as of
** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
**
** $FreeBSD: src/lib/libc/stdtime/tzfile.h,v 1.8 2002/03/22 23:42:05 obrien Exp $
*/

/*
** 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	7.14";
*/
#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
#ifdef UNIFDEF_MOVE_LOCALTIME
#define TZDEFAULT	"/var/db/timezone/localtime"
#else /* !UNIFDEF_MOVE_LOCALTIME */
#define TZDEFAULT	"/etc/localtime"
#endif /* UNIFDEF_MOVE_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 <earl@hpato.aus.hp.com>.
*/
#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

/*
** Accurate only for the past couple of centuries;
** that will probably do.
*/

#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 */

#endif /* !defined TZFILE_H */
Commit	Line	Data
224c7076 A	1	#ifndef TZFILE_H
	2	#define TZFILE_H
	3
	4
	5	/*
	6	** This file is in the public domain, so clarified as of
	7	** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
	8	**
	9	** $FreeBSD: src/lib/libc/stdtime/tzfile.h,v 1.8 2002/03/22 23:42:05 obrien Exp $
	10	*/
	11
	12	/*
	13	** This header is for use ONLY with the time conversion code.
	14	** There is no guarantee that it will remain unchanged,
	15	** or that it will remain at all.
	16	** Do NOT copy it to any system include directory.
	17	** Thank you!
	18	*/
	19
	20	/*
	21	** ID
	22	*/
	23
	24	#ifndef lint
	25	#ifndef NOID
	26	/*
	27	static char tzfilehid[] = "@(#)tzfile.h 7.14";
	28	*/
	29	#endif /* !defined NOID */
	30	#endif /* !defined lint */
	31
	32	/*
	33	** Information about time zone files.
	34	*/
	35
	36	#ifndef TZDIR
	37	#define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */
	38	#endif /* !defined TZDIR */
	39
	40	#ifndef TZDEFAULT
b5d655f7 A	41	#ifdef UNIFDEF_MOVE_LOCALTIME
	42	#define TZDEFAULT "/var/db/timezone/localtime"
	43	#else /* !UNIFDEF_MOVE_LOCALTIME */
224c7076	44	#define TZDEFAULT "/etc/localtime"
b5d655f7	45	#endif /* UNIFDEF_MOVE_LOCALTIME */
224c7076 A	46	#endif /* !defined TZDEFAULT */
	47
	48	#ifndef TZDEFRULES
	49	#define TZDEFRULES "posixrules"
	50	#endif /* !defined TZDEFRULES */
	51
	52	/*
	53	** Each file begins with. . .
	54	*/
	55
	56	#define TZ_MAGIC "TZif"
	57
	58	struct tzhead {
	59	char tzh_magic[4]; /* TZ_MAGIC */
	60	char tzh_reserved[16]; /* reserved for future use */
	61	char tzh_ttisgmtcnt[4]; /* coded number of trans. time flags */
	62	char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
	63	char tzh_leapcnt[4]; /* coded number of leap seconds */
	64	char tzh_timecnt[4]; /* coded number of transition times */
	65	char tzh_typecnt[4]; /* coded number of local time types */
	66	char tzh_charcnt[4]; /* coded number of abbr. chars */
	67	};
	68
	69	/*
	70	** . . .followed by. . .
	71	**
	72	** tzh_timecnt (char [4])s coded transition times a la time(2)
	73	** tzh_timecnt (unsigned char)s types of local time starting at above
	74	** tzh_typecnt repetitions of
	75	** one (char [4]) coded UTC offset in seconds
	76	** one (unsigned char) used to set tm_isdst
	77	** one (unsigned char) that's an abbreviation list index
	78	** tzh_charcnt (char)s '\0'-terminated zone abbreviations
	79	** tzh_leapcnt repetitions of
	80	** one (char [4]) coded leap second transition times
	81	** one (char [4]) total correction after above
	82	** tzh_ttisstdcnt (char)s indexed by type; if TRUE, transition
	83	** time is standard time, if FALSE,
	84	** transition time is wall clock time
	85	** if absent, transition times are
	86	** assumed to be wall clock time
	87	** tzh_ttisgmtcnt (char)s indexed by type; if TRUE, transition
	88	** time is UTC, if FALSE,
	89	** transition time is local time
	90	** if absent, transition times are
	91	** assumed to be local time
	92	*/
	93
	94	/*
	95	** In the current implementation, "tzset()" refuses to deal with files that
	96	** exceed any of the limits below.
	97	*/
	98
	99	#ifndef TZ_MAX_TIMES
	100	/*
	101	** The TZ_MAX_TIMES value below is enough to handle a bit more than a
	102	** year's worth of solar time (corrected daily to the nearest second) or
	103	** 138 years of Pacific Presidential Election time
	104	** (where there are three time zone transitions every fourth year).
	105	*/
	106	#define TZ_MAX_TIMES 370
	107	#endif /* !defined TZ_MAX_TIMES */
	108
	109	#ifndef TZ_MAX_TYPES
110	#ifndef NOSOLAR
111	#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
112	#endif /* !defined NOSOLAR */
113	#ifdef NOSOLAR
114	/*
115	** Must be at least 14 for Europe/Riga as of Jan 12 1995,
116	** as noted by Earl Chew <earl@hpato.aus.hp.com>.
117	*/
118	#define TZ_MAX_TYPES 20 /* Maximum number of local time types */
119	#endif /* !defined NOSOLAR */
120	#endif /* !defined TZ_MAX_TYPES */
121
122	#ifndef TZ_MAX_CHARS
123	#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
124	/* (limited by what unsigned chars can hold) */
125	#endif /* !defined TZ_MAX_CHARS */
126
127	#ifndef TZ_MAX_LEAPS
128	#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
129	#endif /* !defined TZ_MAX_LEAPS */
130
131	#define SECSPERMIN 60
132	#define MINSPERHOUR 60
133	#define HOURSPERDAY 24
134	#define DAYSPERWEEK 7
135	#define DAYSPERNYEAR 365
136	#define DAYSPERLYEAR 366
137	#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
138	#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY)
139	#define MONSPERYEAR 12
140
141	#define TM_SUNDAY 0
142	#define TM_MONDAY 1
143	#define TM_TUESDAY 2
144	#define TM_WEDNESDAY 3
145	#define TM_THURSDAY 4
146	#define TM_FRIDAY 5
147	#define TM_SATURDAY 6
148
149	#define TM_JANUARY 0
150	#define TM_FEBRUARY 1
151	#define TM_MARCH 2
152	#define TM_APRIL 3
153	#define TM_MAY 4
154	#define TM_JUNE 5
155	#define TM_JULY 6
156	#define TM_AUGUST 7
157	#define TM_SEPTEMBER 8
158	#define TM_OCTOBER 9
159	#define TM_NOVEMBER 10
160	#define TM_DECEMBER 11
161
162	#define TM_YEAR_BASE 1900
163
164	#define EPOCH_YEAR 1970
165	#define EPOCH_WDAY TM_THURSDAY
166
167	/*
168	** Accurate only for the past couple of centuries;
169	** that will probably do.
170	*/
171
172	#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 \|\| ((y) % 400) == 0))
173
174	#ifndef USG
175
176	/*
177	** Use of the underscored variants may cause problems if you move your code to
178	** certain System-V-based systems; for maximum portability, use the
179	** underscore-free variants. The underscored variants are provided for
180	** backward compatibility only; they may disappear from future versions of
181	** this file.
182	*/
183
184	#define SECS_PER_MIN SECSPERMIN
185	#define MINS_PER_HOUR MINSPERHOUR
186	#define HOURS_PER_DAY HOURSPERDAY
187	#define DAYS_PER_WEEK DAYSPERWEEK
188	#define DAYS_PER_NYEAR DAYSPERNYEAR
189	#define DAYS_PER_LYEAR DAYSPERLYEAR
190	#define SECS_PER_HOUR SECSPERHOUR
191	#define SECS_PER_DAY SECSPERDAY
192	#define MONS_PER_YEAR MONSPERYEAR
193
194	#endif /* !defined USG */
195
196	#endif /* !defined TZFILE_H */