mirror of
https://frontier.innolan.net/rainlance/amiga-tz.git
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89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
#ifndef lint
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#ifndef NOID
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static char tzfilehid[] = "%W%";
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#endif /* !NOID */
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#endif /* !lint */
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/*
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** Information about time zone files.
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*/
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#ifndef TZDIR
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#define TZDIR "/etc/zoneinfo" /* Time zone object file directory */
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#endif /* !TZDIR */
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#ifndef TZDEFAULT
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#define TZDEFAULT "localtime"
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#endif /* !TZDEFAULT */
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/*
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** Each file begins with. . .
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*/
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struct tzhead {
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char tzh_reserved[32]; /* reserved for future use */
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char tzh_timecnt[4]; /* coded number of transition times */
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char tzh_typecnt[4]; /* coded number of local time types */
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char tzh_charcnt[4]; /* coded number of abbr. chars */
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};
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/*
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** . . .followed by. . .
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**
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** tzh_timecnt (char [4])s coded transition times a la time(2)
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** tzh_timecnt (unsigned char)s types of local time starting at above
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** tzh_typecnt repetitions of
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** one (char [4]) coded GMT offset in seconds
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** one (unsigned char) used to set tm_isdt
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** one (unsigned char) that's an abbreviation list index
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** tzh_charcnt (char)s '\0'-terminated zone abbreviaton strings
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*/
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/*
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** In the current implementation, "settz()" refuses to deal with files that
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** exceed any of the limits below.
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*/
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#ifndef TZ_MAX_TIMES
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#ifdef SAUDI
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#define TZ_MAX_TIMES 370 /* A bit more than a year's worth */
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#else /* !SAUDI */
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#define TZ_MAX_TIMES 300 /* Maximum number of transition times */
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#endif /* !SAUDI */
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#endif /* !TZ_MAX_TIMES */
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#ifndef TZ_MAX_TYPES
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#ifdef SAUDI
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#define TZ_MAX_TYPES 370 /* A bit more than a year's worth */
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#else /* !SAUDI */
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#define TZ_MAX_TYPES 10 /* Maximum number of local time types */
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#endif /* !SAUDI */
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#endif /* !TZ_MAX_TYPES */
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#ifndef TZ_MAX_CHARS
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#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
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#endif /* !TZ_MAX_CHARS */
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#define SECS_PER_MIN 60
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#define MINS_PER_HOUR 60
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#define HOURS_PER_DAY 24
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#define DAYS_PER_WEEK 7
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#define DAYS_PER_NYEAR 365
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#define DAYS_PER_LYEAR 366
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#define SECS_PER_HOUR (SECS_PER_MIN * MINS_PER_HOUR)
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#define SECS_PER_DAY ((long) SECS_PER_HOUR * HOURS_PER_DAY)
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#define MONS_PER_YEAR 12
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#define TM_SUNDAY 0
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#define TM_MONDAY 1
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#define TM_TUESDAY 2
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#define TM_WEDNESDAY 3
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#define TM_THURSDAY 4
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#define TM_FRIDAY 5
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#define TM_SATURDAY 6
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#define TM_YEAR_BASE 1900
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#define EPOCH_YEAR 1970
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#define EPOCH_WDAY TM_THURSDAY
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