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- /*
- * Copyright (c) 1998 The Santa Cruz Operation, Inc.. All Rights Reserved.
- *
- * THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF THE
- * SANTA CRUZ OPERATION INC.
- *
- * The copyright notice above does not evidence any actual or intended
- * publication of such source code.
- */
-
- #ifndef _TZFILE_H
- #define _TZFILE_H
-
- #ident "@(#)sgs-head:common/head/tzfile.h 1.4"
- /* @(#)tzfile.h 1.5 88/02/07 SMI; from Arthur Olson's 3.1 */
-
- /*
- ** Information about time zone files.
- */
-
- #define TZDIR "/usr/lib/locale/TZ" /* Time zone object file directory */
-
- #define TZDEFAULT "localtime"
-
- /*
- ** Each file begins with. . .
- */
-
- struct tzhead {
- char tzh_reserved[32]; /* reserved for future use */
- 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 GMT offset in seconds
- ** one (unsigned char) used to set tm_isdt
- ** one (unsigned char) that's an abbreviation list index
- ** tzh_charcnt (char)s '\0'-terminated zone abbreviaton strings
- */
-
- /*
- ** In the current implementation, "tzset()" refuses to deal with files that
- ** exceed any of the limits below.
- */
-
- /*
- ** 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
-
- #ifndef NOSOLAR
- #define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
- #else /* !NOSOLAR */
- #define TZ_MAX_TYPES 10 /* Maximum number of local time types */
- #endif /* !NOSOLAR */
-
- #define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
-
- #define SECS_PER_MIN 60
- #define MINS_PER_HOUR 60
- #define HOURS_PER_DAY 24
- #define DAYS_PER_WEEK 7
- #define DAYS_PER_NYEAR 365
- #define DAYS_PER_LYEAR 366
- #define SECS_PER_HOUR (SECS_PER_MIN * MINS_PER_HOUR)
- #define SECS_PER_DAY ((long) SECS_PER_HOUR * HOURS_PER_DAY)
- #define MONS_PER_YEAR 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)
-
- #endif /* _TZFILE_H */
-