[apple/libc.git] / stdtime / FreeBSD / 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
#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_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
5b2abdfb	1	#ifndef TZFILE_H
5b2abdfb A	2	#define TZFILE_H
5b2abdfb A	3
9385eb3d	4
5b2abdfb A	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).
9385eb3d A	8	**
9385eb3d A	9	** $FreeBSD: src/lib/libc/stdtime/tzfile.h,v 1.8 2002/03/22 23:42:05 obrien Exp $
5b2abdfb A	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
	41	#define TZDEFAULT "/etc/localtime"
	42	#endif /* !defined TZDEFAULT */
	43
	44	#ifndef TZDEFRULES
	45	#define TZDEFRULES "posixrules"
	46	#endif /* !defined TZDEFRULES */
	47
	48	/*
	49	** Each file begins with. . .
	50	*/
	51
	52	#define TZ_MAGIC "TZif"
	53
	54	struct tzhead {
	55	char tzh_magic[4]; /* TZ_MAGIC */
	56	char tzh_reserved[16]; /* reserved for future use */
	57	char tzh_ttisgmtcnt[4]; /* coded number of trans. time flags */
	58	char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
	59	char tzh_leapcnt[4]; /* coded number of leap seconds */
	60	char tzh_timecnt[4]; /* coded number of transition times */
	61	char tzh_typecnt[4]; /* coded number of local time types */
	62	char tzh_charcnt[4]; /* coded number of abbr. chars */
	63	};
	64
	65	/*
	66	** . . .followed by. . .
	67	**
	68	** tzh_timecnt (char [4])s coded transition times a la time(2)
	69	** tzh_timecnt (unsigned char)s types of local time starting at above
	70	** tzh_typecnt repetitions of
	71	** one (char [4]) coded UTC offset in seconds
	72	** one (unsigned char) used to set tm_isdst
	73	** one (unsigned char) that's an abbreviation list index
74	** tzh_charcnt (char)s '\0'-terminated zone abbreviations
75	** tzh_leapcnt repetitions of
76	** one (char [4]) coded leap second transition times
77	** one (char [4]) total correction after above
78	** tzh_ttisstdcnt (char)s indexed by type; if TRUE, transition
79	** time is standard time, if FALSE,
80	** transition time is wall clock time
81	** if absent, transition times are
82	** assumed to be wall clock time
83	** tzh_ttisgmtcnt (char)s indexed by type; if TRUE, transition
84	** time is UTC, if FALSE,
85	** transition time is local time
86	** if absent, transition times are
87	** assumed to be local time
88	*/
89
90	/*
91	** In the current implementation, "tzset()" refuses to deal with files that
92	** exceed any of the limits below.
93	*/
94
95	#ifndef TZ_MAX_TIMES
96	/*
97	** The TZ_MAX_TIMES value below is enough to handle a bit more than a
98	** year's worth of solar time (corrected daily to the nearest second) or
99	** 138 years of Pacific Presidential Election time
100	** (where there are three time zone transitions every fourth year).
101	*/
102	#define TZ_MAX_TIMES 370
103	#endif /* !defined TZ_MAX_TIMES */
104
105	#ifndef TZ_MAX_TYPES
106	#ifndef NOSOLAR
107	#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
108	#endif /* !defined NOSOLAR */
109	#ifdef NOSOLAR
110	/*
111	** Must be at least 14 for Europe/Riga as of Jan 12 1995,
112	** as noted by Earl Chew <earl@hpato.aus.hp.com>.
113	*/
114	#define TZ_MAX_TYPES 20 /* Maximum number of local time types */
115	#endif /* !defined NOSOLAR */
116	#endif /* !defined TZ_MAX_TYPES */
117
118	#ifndef TZ_MAX_CHARS
119	#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
120	/* (limited by what unsigned chars can hold) */
121	#endif /* !defined TZ_MAX_CHARS */
122
123	#ifndef TZ_MAX_LEAPS
124	#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
125	#endif /* !defined TZ_MAX_LEAPS */
126
127	#define SECSPERMIN 60
128	#define MINSPERHOUR 60
129	#define HOURSPERDAY 24
130	#define DAYSPERWEEK 7
131	#define DAYSPERNYEAR 365
132	#define DAYSPERLYEAR 366
133	#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
134	#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY)
135	#define MONSPERYEAR 12
136
137	#define TM_SUNDAY 0
138	#define TM_MONDAY 1
139	#define TM_TUESDAY 2
140	#define TM_WEDNESDAY 3
141	#define TM_THURSDAY 4
142	#define TM_FRIDAY 5
143	#define TM_SATURDAY 6
144
145	#define TM_JANUARY 0
146	#define TM_FEBRUARY 1
147	#define TM_MARCH 2
148	#define TM_APRIL 3
149	#define TM_MAY 4
150	#define TM_JUNE 5
151	#define TM_JULY 6
152	#define TM_AUGUST 7
153	#define TM_SEPTEMBER 8
154	#define TM_OCTOBER 9
155	#define TM_NOVEMBER 10
156	#define TM_DECEMBER 11
157
158	#define TM_YEAR_BASE 1900
159
160	#define EPOCH_YEAR 1970
161	#define EPOCH_WDAY TM_THURSDAY
162
163	/*
164	** Accurate only for the past couple of centuries;
165	** that will probably do.
166	*/
167
168	#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 \|\| ((y) % 400) == 0))
169
170	#ifndef USG
171
172	/*
173	** Use of the underscored variants may cause problems if you move your code to
174	** certain System-V-based systems; for maximum portability, use the
175	** underscore-free variants. The underscored variants are provided for
176	** backward compatibility only; they may disappear from future versions of
177	** this file.
178	*/
179
180	#define SECS_PER_MIN SECSPERMIN
181	#define MINS_PER_HOUR MINSPERHOUR
182	#define HOURS_PER_DAY HOURSPERDAY
183	#define DAYS_PER_WEEK DAYSPERWEEK
184	#define DAYS_PER_NYEAR DAYSPERNYEAR
185	#define DAYS_PER_LYEAR DAYSPERLYEAR
186	#define SECS_PER_HOUR SECSPERHOUR
187	#define SECS_PER_DAY SECSPERDAY
188	#define MONS_PER_YEAR MONSPERYEAR
189
190	#endif /* !defined USG */
191
192	#endif /* !defined TZFILE_H */