12708Swollman#ifndef TZFILE_H 22708Swollman#define TZFILE_H 32708Swollman 492991Sobrien 52708Swollman/* 617209Swollman** This file is in the public domain, so clarified as of 7192625Sedwin** 1996-06-05 by Arthur David Olson. 892991Sobrien** 992991Sobrien** $FreeBSD$ 1017209Swollman*/ 1117209Swollman 1217209Swollman/* 132708Swollman** This header is for use ONLY with the time conversion code. 142708Swollman** There is no guarantee that it will remain unchanged, 152708Swollman** or that it will remain at all. 162708Swollman** Do NOT copy it to any system include directory. 172708Swollman** Thank you! 182708Swollman*/ 192708Swollman 202708Swollman/* 212708Swollman** ID 222708Swollman*/ 232708Swollman 242708Swollman#ifndef lint 252708Swollman#ifndef NOID 2617209Swollman/* 27192625Sedwinstatic char tzfilehid[] = "@(#)tzfile.h 8.1"; 2817209Swollman*/ 292708Swollman#endif /* !defined NOID */ 302708Swollman#endif /* !defined lint */ 312708Swollman 322708Swollman/* 332708Swollman** Information about time zone files. 342708Swollman*/ 352708Swollman 362708Swollman#ifndef TZDIR 372713Swollman#define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */ 382708Swollman#endif /* !defined TZDIR */ 392708Swollman 402708Swollman#ifndef TZDEFAULT 412713Swollman#define TZDEFAULT "/etc/localtime" 422708Swollman#endif /* !defined TZDEFAULT */ 432708Swollman 442708Swollman#ifndef TZDEFRULES 452708Swollman#define TZDEFRULES "posixrules" 462708Swollman#endif /* !defined TZDEFRULES */ 472708Swollman 482708Swollman/* 492708Swollman** Each file begins with. . . 502708Swollman*/ 512708Swollman 5242989Swollman#define TZ_MAGIC "TZif" 5342989Swollman 542708Swollmanstruct tzhead { 55192625Sedwin char tzh_magic[4]; /* TZ_MAGIC */ 56192625Sedwin char tzh_version[1]; /* '\0' or '2' as of 2005 */ 57192625Sedwin char tzh_reserved[15]; /* reserved--must be zero */ 589936Swollman char tzh_ttisgmtcnt[4]; /* coded number of trans. time flags */ 592708Swollman char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */ 602708Swollman char tzh_leapcnt[4]; /* coded number of leap seconds */ 612708Swollman char tzh_timecnt[4]; /* coded number of transition times */ 622708Swollman char tzh_typecnt[4]; /* coded number of local time types */ 632708Swollman char tzh_charcnt[4]; /* coded number of abbr. chars */ 642708Swollman}; 652708Swollman 662708Swollman/* 672708Swollman** . . .followed by. . . 682708Swollman** 692708Swollman** tzh_timecnt (char [4])s coded transition times a la time(2) 702708Swollman** tzh_timecnt (unsigned char)s types of local time starting at above 712708Swollman** tzh_typecnt repetitions of 7242989Swollman** one (char [4]) coded UTC offset in seconds 732708Swollman** one (unsigned char) used to set tm_isdst 742708Swollman** one (unsigned char) that's an abbreviation list index 752708Swollman** tzh_charcnt (char)s '\0'-terminated zone abbreviations 762708Swollman** tzh_leapcnt repetitions of 772708Swollman** one (char [4]) coded leap second transition times 782708Swollman** one (char [4]) total correction after above 792708Swollman** tzh_ttisstdcnt (char)s indexed by type; if TRUE, transition 802708Swollman** time is standard time, if FALSE, 812708Swollman** transition time is wall clock time 822708Swollman** if absent, transition times are 832708Swollman** assumed to be wall clock time 849936Swollman** tzh_ttisgmtcnt (char)s indexed by type; if TRUE, transition 8542989Swollman** time is UTC, if FALSE, 869936Swollman** transition time is local time 879936Swollman** if absent, transition times are 889936Swollman** assumed to be local time 892708Swollman*/ 902708Swollman 912708Swollman/* 92192625Sedwin** If tzh_version is '2' or greater, the above is followed by a second instance 93192625Sedwin** of tzhead and a second instance of the data in which each coded transition 94192625Sedwin** time uses 8 rather than 4 chars, 95192625Sedwin** then a POSIX-TZ-environment-variable-style string for use in handling 96192625Sedwin** instants after the last transition time stored in the file 97192625Sedwin** (with nothing between the newlines if there is no POSIX representation for 98192625Sedwin** such instants). 99192625Sedwin*/ 100192625Sedwin 101192625Sedwin/* 1022708Swollman** In the current implementation, "tzset()" refuses to deal with files that 1032708Swollman** exceed any of the limits below. 1042708Swollman*/ 1052708Swollman 1062708Swollman#ifndef TZ_MAX_TIMES 107192625Sedwin#define TZ_MAX_TIMES 1200 1082708Swollman#endif /* !defined TZ_MAX_TIMES */ 1092708Swollman 1102708Swollman#ifndef TZ_MAX_TYPES 1112708Swollman#ifndef NOSOLAR 1122708Swollman#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */ 1132708Swollman#endif /* !defined NOSOLAR */ 1142708Swollman#ifdef NOSOLAR 1159936Swollman/* 1169936Swollman** Must be at least 14 for Europe/Riga as of Jan 12 1995, 117192625Sedwin** as noted by Earl Chew. 1189936Swollman*/ 1199936Swollman#define TZ_MAX_TYPES 20 /* Maximum number of local time types */ 1202708Swollman#endif /* !defined NOSOLAR */ 1212708Swollman#endif /* !defined TZ_MAX_TYPES */ 1222708Swollman 1232708Swollman#ifndef TZ_MAX_CHARS 1242708Swollman#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */ 1252708Swollman /* (limited by what unsigned chars can hold) */ 1262708Swollman#endif /* !defined TZ_MAX_CHARS */ 1272708Swollman 1282708Swollman#ifndef TZ_MAX_LEAPS 1292708Swollman#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */ 1302708Swollman#endif /* !defined TZ_MAX_LEAPS */ 1312708Swollman 1322708Swollman#define SECSPERMIN 60 1332708Swollman#define MINSPERHOUR 60 1342708Swollman#define HOURSPERDAY 24 1352708Swollman#define DAYSPERWEEK 7 1362708Swollman#define DAYSPERNYEAR 365 1372708Swollman#define DAYSPERLYEAR 366 1382708Swollman#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR) 1392708Swollman#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY) 1402708Swollman#define MONSPERYEAR 12 1412708Swollman 1422708Swollman#define TM_SUNDAY 0 1432708Swollman#define TM_MONDAY 1 1442708Swollman#define TM_TUESDAY 2 1452708Swollman#define TM_WEDNESDAY 3 1462708Swollman#define TM_THURSDAY 4 1472708Swollman#define TM_FRIDAY 5 1482708Swollman#define TM_SATURDAY 6 1492708Swollman 1502708Swollman#define TM_JANUARY 0 1512708Swollman#define TM_FEBRUARY 1 1522708Swollman#define TM_MARCH 2 1532708Swollman#define TM_APRIL 3 1542708Swollman#define TM_MAY 4 1552708Swollman#define TM_JUNE 5 1562708Swollman#define TM_JULY 6 1572708Swollman#define TM_AUGUST 7 1582708Swollman#define TM_SEPTEMBER 8 1592708Swollman#define TM_OCTOBER 9 1602708Swollman#define TM_NOVEMBER 10 1612708Swollman#define TM_DECEMBER 11 1622708Swollman 1632708Swollman#define TM_YEAR_BASE 1900 1642708Swollman 1652708Swollman#define EPOCH_YEAR 1970 1662708Swollman#define EPOCH_WDAY TM_THURSDAY 1672708Swollman 16817209Swollman#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0)) 1692708Swollman 1702708Swollman/* 171192625Sedwin** Since everything in isleap is modulo 400 (or a factor of 400), we know that 172192625Sedwin** isleap(y) == isleap(y % 400) 173192625Sedwin** and so 174192625Sedwin** isleap(a + b) == isleap((a + b) % 400) 175192625Sedwin** or 176192625Sedwin** isleap(a + b) == isleap(a % 400 + b % 400) 177192625Sedwin** This is true even if % means modulo rather than Fortran remainder 178192625Sedwin** (which is allowed by C89 but not C99). 179192625Sedwin** We use this to avoid addition overflow problems. 1802708Swollman*/ 1812708Swollman 182192625Sedwin#define isleap_sum(a, b) isleap((a) % 400 + (b) % 400) 1832708Swollman 1842708Swollman#endif /* !defined TZFILE_H */ 185