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- /*
- * Copyright (c) 1988 Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Arthur David Olson of the National Cancer Institute.
- *
- * Redistribution and use in source and binary forms are permitted provided
- * that: (1) source distributions retain this entire copyright notice and
- * comment, and (2) distributions including binaries display the following
- * acknowledgement: ``This product includes software developed by the
- * University of California, Berkeley and its contributors'' in the
- * documentation or other materials provided with the distribution and in
- * all advertising materials mentioning features or use of this software.
- * Neither the name of the University nor the names of its contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- *
- * @(#)tzfile.h 5.9 (Berkeley) 6/11/90
- */
-
- /*
- ** Information about time zone files.
- */
-
- /* Time zone object file directory */
- #define TZDIR "/usr/share/zoneinfo"
- #define TZDEFAULT "/etc/localtime"
- #define TZDEFRULES "posixrules"
-
- /*
- ** Each file begins with. . .
- */
-
- struct tzhead {
- char tzh_reserved[24]; /* reserved for future use */
- 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 GMT 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
- */
-
- /*
- ** 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
-
- #define NOSOLAR /* 4BSD doesn't currently handle solar time */
-
- #ifndef NOSOLAR
- #define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
- #else
- #define TZ_MAX_TYPES 10 /* Maximum number of local time types */
- #endif
-
- #define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
-
- #define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
-
- #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)
-