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
19static char tzfilehid[] = "@(#)tzfile.h 7.4";
20#endif /* !defined NOID */
21#endif /* !defined lint */
22
23/*
24** Information about time zone files.
25*/
26
27#ifndef TZDIR
| 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
19static char tzfilehid[] = "@(#)tzfile.h 7.4";
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/local/etc/zoneinfo" /* Time zone object file directory */
| 28#define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */
|
29#endif /* !defined TZDIR */
30
31#ifndef TZDEFAULT
| 29#endif /* !defined TZDIR */
30
31#ifndef TZDEFAULT
|
32#define TZDEFAULT "localtime"
| 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 {
44 char tzh_reserved[24]; /* reserved for future use */
45 char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
46 char tzh_leapcnt[4]; /* coded number of leap seconds */
47 char tzh_timecnt[4]; /* coded number of transition times */
48 char tzh_typecnt[4]; /* coded number of local time types */
49 char tzh_charcnt[4]; /* coded number of abbr. chars */
50};
51
52/*
53** . . .followed by. . .
54**
55** tzh_timecnt (char [4])s coded transition times a la time(2)
56** tzh_timecnt (unsigned char)s types of local time starting at above
57** tzh_typecnt repetitions of
58** one (char [4]) coded GMT offset in seconds
59** one (unsigned char) used to set tm_isdst
60** one (unsigned char) that's an abbreviation list index
61** tzh_charcnt (char)s '\0'-terminated zone abbreviations
62** tzh_leapcnt repetitions of
63** one (char [4]) coded leap second transition times
64** one (char [4]) total correction after above
65** tzh_ttisstdcnt (char)s indexed by type; if TRUE, transition
66** time is standard time, if FALSE,
67** transition time is wall clock time
68** if absent, transition times are
69** assumed to be wall clock time
70*/
71
72/*
73** In the current implementation, "tzset()" refuses to deal with files that
74** exceed any of the limits below.
75*/
76
77#ifndef TZ_MAX_TIMES
78/*
79** The TZ_MAX_TIMES value below is enough to handle a bit more than a
80** year's worth of solar time (corrected daily to the nearest second) or
81** 138 years of Pacific Presidential Election time
82** (where there are three time zone transitions every fourth year).
83*/
84#define TZ_MAX_TIMES 370
85#endif /* !defined TZ_MAX_TIMES */
86
87#ifndef TZ_MAX_TYPES
88#ifndef NOSOLAR
89#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
90#endif /* !defined NOSOLAR */
91#ifdef NOSOLAR
92#define TZ_MAX_TYPES 10 /* Maximum number of local time types */
93#endif /* !defined NOSOLAR */
94#endif /* !defined TZ_MAX_TYPES */
95
96#ifndef TZ_MAX_CHARS
97#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
98 /* (limited by what unsigned chars can hold) */
99#endif /* !defined TZ_MAX_CHARS */
100
101#ifndef TZ_MAX_LEAPS
102#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
103#endif /* !defined TZ_MAX_LEAPS */
104
105#define SECSPERMIN 60
106#define MINSPERHOUR 60
107#define HOURSPERDAY 24
108#define DAYSPERWEEK 7
109#define DAYSPERNYEAR 365
110#define DAYSPERLYEAR 366
111#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
112#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY)
113#define MONSPERYEAR 12
114
115#define TM_SUNDAY 0
116#define TM_MONDAY 1
117#define TM_TUESDAY 2
118#define TM_WEDNESDAY 3
119#define TM_THURSDAY 4
120#define TM_FRIDAY 5
121#define TM_SATURDAY 6
122
123#define TM_JANUARY 0
124#define TM_FEBRUARY 1
125#define TM_MARCH 2
126#define TM_APRIL 3
127#define TM_MAY 4
128#define TM_JUNE 5
129#define TM_JULY 6
130#define TM_AUGUST 7
131#define TM_SEPTEMBER 8
132#define TM_OCTOBER 9
133#define TM_NOVEMBER 10
134#define TM_DECEMBER 11
135
136#define TM_YEAR_BASE 1900
137
138#define EPOCH_YEAR 1970
139#define EPOCH_WDAY TM_THURSDAY
140
141/*
142** Accurate only for the past couple of centuries;
143** that will probably do.
144*/
145
146#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
147
148#ifndef USG
149
150/*
151** Use of the underscored variants may cause problems if you move your code to
152** certain System-V-based systems; for maximum portability, use the
153** underscore-free variants. The underscored variants are provided for
154** backward compatibility only; they may disappear from future versions of
155** this file.
156*/
157
158#define SECS_PER_MIN SECSPERMIN
159#define MINS_PER_HOUR MINSPERHOUR
160#define HOURS_PER_DAY HOURSPERDAY
161#define DAYS_PER_WEEK DAYSPERWEEK
162#define DAYS_PER_NYEAR DAYSPERNYEAR
163#define DAYS_PER_LYEAR DAYSPERLYEAR
164#define SECS_PER_HOUR SECSPERHOUR
165#define SECS_PER_DAY SECSPERDAY
166#define MONS_PER_YEAR MONSPERYEAR
167
168#endif /* !defined USG */
169
170#endif /* !defined TZFILE_H */
| 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 {
44 char tzh_reserved[24]; /* reserved for future use */
45 char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
46 char tzh_leapcnt[4]; /* coded number of leap seconds */
47 char tzh_timecnt[4]; /* coded number of transition times */
48 char tzh_typecnt[4]; /* coded number of local time types */
49 char tzh_charcnt[4]; /* coded number of abbr. chars */
50};
51
52/*
53** . . .followed by. . .
54**
55** tzh_timecnt (char [4])s coded transition times a la time(2)
56** tzh_timecnt (unsigned char)s types of local time starting at above
57** tzh_typecnt repetitions of
58** one (char [4]) coded GMT offset in seconds
59** one (unsigned char) used to set tm_isdst
60** one (unsigned char) that's an abbreviation list index
61** tzh_charcnt (char)s '\0'-terminated zone abbreviations
62** tzh_leapcnt repetitions of
63** one (char [4]) coded leap second transition times
64** one (char [4]) total correction after above
65** tzh_ttisstdcnt (char)s indexed by type; if TRUE, transition
66** time is standard time, if FALSE,
67** transition time is wall clock time
68** if absent, transition times are
69** assumed to be wall clock time
70*/
71
72/*
73** In the current implementation, "tzset()" refuses to deal with files that
74** exceed any of the limits below.
75*/
76
77#ifndef TZ_MAX_TIMES
78/*
79** The TZ_MAX_TIMES value below is enough to handle a bit more than a
80** year's worth of solar time (corrected daily to the nearest second) or
81** 138 years of Pacific Presidential Election time
82** (where there are three time zone transitions every fourth year).
83*/
84#define TZ_MAX_TIMES 370
85#endif /* !defined TZ_MAX_TIMES */
86
87#ifndef TZ_MAX_TYPES
88#ifndef NOSOLAR
89#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
90#endif /* !defined NOSOLAR */
91#ifdef NOSOLAR
92#define TZ_MAX_TYPES 10 /* Maximum number of local time types */
93#endif /* !defined NOSOLAR */
94#endif /* !defined TZ_MAX_TYPES */
95
96#ifndef TZ_MAX_CHARS
97#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
98 /* (limited by what unsigned chars can hold) */
99#endif /* !defined TZ_MAX_CHARS */
100
101#ifndef TZ_MAX_LEAPS
102#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
103#endif /* !defined TZ_MAX_LEAPS */
104
105#define SECSPERMIN 60
106#define MINSPERHOUR 60
107#define HOURSPERDAY 24
108#define DAYSPERWEEK 7
109#define DAYSPERNYEAR 365
110#define DAYSPERLYEAR 366
111#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
112#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY)
113#define MONSPERYEAR 12
114
115#define TM_SUNDAY 0
116#define TM_MONDAY 1
117#define TM_TUESDAY 2
118#define TM_WEDNESDAY 3
119#define TM_THURSDAY 4
120#define TM_FRIDAY 5
121#define TM_SATURDAY 6
122
123#define TM_JANUARY 0
124#define TM_FEBRUARY 1
125#define TM_MARCH 2
126#define TM_APRIL 3
127#define TM_MAY 4
128#define TM_JUNE 5
129#define TM_JULY 6
130#define TM_AUGUST 7
131#define TM_SEPTEMBER 8
132#define TM_OCTOBER 9
133#define TM_NOVEMBER 10
134#define TM_DECEMBER 11
135
136#define TM_YEAR_BASE 1900
137
138#define EPOCH_YEAR 1970
139#define EPOCH_WDAY TM_THURSDAY
140
141/*
142** Accurate only for the past couple of centuries;
143** that will probably do.
144*/
145
146#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
147
148#ifndef USG
149
150/*
151** Use of the underscored variants may cause problems if you move your code to
152** certain System-V-based systems; for maximum portability, use the
153** underscore-free variants. The underscored variants are provided for
154** backward compatibility only; they may disappear from future versions of
155** this file.
156*/
157
158#define SECS_PER_MIN SECSPERMIN
159#define MINS_PER_HOUR MINSPERHOUR
160#define HOURS_PER_DAY HOURSPERDAY
161#define DAYS_PER_WEEK DAYSPERWEEK
162#define DAYS_PER_NYEAR DAYSPERNYEAR
163#define DAYS_PER_LYEAR DAYSPERLYEAR
164#define SECS_PER_HOUR SECSPERHOUR
165#define SECS_PER_DAY SECSPERDAY
166#define MONS_PER_YEAR MONSPERYEAR
167
168#endif /* !defined USG */
169
170#endif /* !defined TZFILE_H */
|