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Diffstat (limited to 'StdLib/LibC/Time/tzfile.h')
| -rw-r--r-- | StdLib/LibC/Time/tzfile.h | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/StdLib/LibC/Time/tzfile.h b/StdLib/LibC/Time/tzfile.h new file mode 100644 index 0000000000..11c20ebd39 --- /dev/null +++ b/StdLib/LibC/Time/tzfile.h @@ -0,0 +1,168 @@ +/** @file
+ Time Zone processing, declarations and macros.
+
+ Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials are licensed and made available under
+ the terms and conditions of the BSD License that accompanies this distribution.
+ The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+ Derived from the NIH time zone package file, tzfile.h, which contains the following notice:
+
+ This file is in the public domain, so clarified as of
+ 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
+
+ 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!
+
+ NetBSD: tzfile.h,v 1.8 1998/01/22 07:06:59 jtc Exp
+**/
+#ifndef TZFILE_H
+#define TZFILE_H
+
+/*
+** Information about time zone files.
+*/
+
+#ifndef TZDIR /* Time zone object file directory */
+#define TZDIR "/usr/share/zoneinfo"
+#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 ((LONG32)(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 // Use this for 32-bit time_t
+//#define EPOCH_WDAY TM_SUNDAY // Use this for 64-bit time_t
+
+/*
+** 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 /* !defined TZFILE_H */
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