1#ifndef TZFILE_H 2 3#define TZFILE_H 4 5/* 6** This header is for use ONLY with the time conversion code. 7** There is no guarantee that it will remain unchanged, 8** or that it will remain at all. 9** Do NOT copy it to any system include directory. 10** Thank you! 11*/ 12 13/* 14** ID 15*/ 16 17#ifndef lint 18#ifndef NOID
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19static char tzfilehid[] = "@(#)tzfile.h 7.4";
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19/*static char tzfilehid[] = "@(#)tzfile.h 7.6";*/ |
20#endif /* !defined NOID */ 21#endif /* !defined lint */ 22 23/* 24** Information about time zone files. 25*/ 26 27#ifndef TZDIR 28#define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */ 29#endif /* !defined TZDIR */ 30 31#ifndef TZDEFAULT 32#define TZDEFAULT "/etc/localtime" 33#endif /* !defined TZDEFAULT */ 34 35#ifndef TZDEFRULES 36#define TZDEFRULES "posixrules" 37#endif /* !defined TZDEFRULES */ 38 39/* 40** Each file begins with. . . 41*/ 42 43struct tzhead {
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44 char tzh_reserved[24]; /* reserved for future use */
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44 char tzh_reserved[20]; /* reserved for future use */ 45 char tzh_ttisgmtcnt[4]; /* coded number of trans. time flags */ |
46 char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */ 47 char tzh_leapcnt[4]; /* coded number of leap seconds */ 48 char tzh_timecnt[4]; /* coded number of transition times */ 49 char tzh_typecnt[4]; /* coded number of local time types */ 50 char tzh_charcnt[4]; /* coded number of abbr. chars */ 51}; 52 53/* 54** . . .followed by. . . 55** 56** tzh_timecnt (char [4])s coded transition times a la time(2) 57** tzh_timecnt (unsigned char)s types of local time starting at above 58** tzh_typecnt repetitions of 59** one (char [4]) coded GMT offset in seconds 60** one (unsigned char) used to set tm_isdst 61** one (unsigned char) that's an abbreviation list index 62** tzh_charcnt (char)s '\0'-terminated zone abbreviations 63** tzh_leapcnt repetitions of 64** one (char [4]) coded leap second transition times 65** one (char [4]) total correction after above 66** tzh_ttisstdcnt (char)s indexed by type; if TRUE, transition 67** time is standard time, if FALSE, 68** transition time is wall clock time 69** if absent, transition times are 70** assumed to be wall clock time
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71** tzh_ttisgmtcnt (char)s indexed by type; if TRUE, transition 72** time is GMT, if FALSE, 73** transition time is local time 74** if absent, transition times are 75** assumed to be local time |
76*/ 77 78/* 79** In the current implementation, "tzset()" refuses to deal with files that 80** exceed any of the limits below. 81*/ 82 83#ifndef TZ_MAX_TIMES 84/* 85** The TZ_MAX_TIMES value below is enough to handle a bit more than a 86** year's worth of solar time (corrected daily to the nearest second) or 87** 138 years of Pacific Presidential Election time 88** (where there are three time zone transitions every fourth year). 89*/ 90#define TZ_MAX_TIMES 370 91#endif /* !defined TZ_MAX_TIMES */ 92 93#ifndef TZ_MAX_TYPES 94#ifndef NOSOLAR 95#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */ 96#endif /* !defined NOSOLAR */ 97#ifdef NOSOLAR
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92#define TZ_MAX_TYPES 10 /* Maximum number of local time types */
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98/* 99** Must be at least 14 for Europe/Riga as of Jan 12 1995, 100** as noted by Earl Chew <earl@hpato.aus.hp.com>. 101*/ 102#define TZ_MAX_TYPES 20 /* Maximum number of local time types */ |
103#endif /* !defined NOSOLAR */ 104#endif /* !defined TZ_MAX_TYPES */ 105 106#ifndef TZ_MAX_CHARS 107#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */ 108 /* (limited by what unsigned chars can hold) */ 109#endif /* !defined TZ_MAX_CHARS */ 110 111#ifndef TZ_MAX_LEAPS 112#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */ 113#endif /* !defined TZ_MAX_LEAPS */ 114 115#define SECSPERMIN 60 116#define MINSPERHOUR 60 117#define HOURSPERDAY 24 118#define DAYSPERWEEK 7 119#define DAYSPERNYEAR 365 120#define DAYSPERLYEAR 366 121#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR) 122#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY) 123#define MONSPERYEAR 12 124 125#define TM_SUNDAY 0 126#define TM_MONDAY 1 127#define TM_TUESDAY 2 128#define TM_WEDNESDAY 3 129#define TM_THURSDAY 4 130#define TM_FRIDAY 5 131#define TM_SATURDAY 6 132 133#define TM_JANUARY 0 134#define TM_FEBRUARY 1 135#define TM_MARCH 2 136#define TM_APRIL 3 137#define TM_MAY 4 138#define TM_JUNE 5 139#define TM_JULY 6 140#define TM_AUGUST 7 141#define TM_SEPTEMBER 8 142#define TM_OCTOBER 9 143#define TM_NOVEMBER 10 144#define TM_DECEMBER 11 145 146#define TM_YEAR_BASE 1900 147 148#define EPOCH_YEAR 1970 149#define EPOCH_WDAY TM_THURSDAY 150 151/* 152** Accurate only for the past couple of centuries; 153** that will probably do. 154*/ 155 156#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0) 157 158#ifndef USG 159 160/* 161** Use of the underscored variants may cause problems if you move your code to 162** certain System-V-based systems; for maximum portability, use the 163** underscore-free variants. The underscored variants are provided for 164** backward compatibility only; they may disappear from future versions of 165** this file. 166*/ 167 168#define SECS_PER_MIN SECSPERMIN 169#define MINS_PER_HOUR MINSPERHOUR 170#define HOURS_PER_DAY HOURSPERDAY 171#define DAYS_PER_WEEK DAYSPERWEEK 172#define DAYS_PER_NYEAR DAYSPERNYEAR 173#define DAYS_PER_LYEAR DAYSPERLYEAR 174#define SECS_PER_HOUR SECSPERHOUR 175#define SECS_PER_DAY SECSPERDAY 176#define MONS_PER_YEAR MONSPERYEAR 177 178#endif /* !defined USG */ 179 180#endif /* !defined TZFILE_H */
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