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Implement proper time zone support

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Cosmopolitan now supports 104 time zones. They're embedded inside any
binary that links the localtime() function. Doing so adds about 100kb
to the binary size. This change also gets time zones working properly
on Windows for the first time. It's not needed to have /etc/localtime
exist on Windows, since we can get this information from WIN32. We're
also now updated to the latest version of Paul Eggert's TZ library.
This commit is contained in:
Justine Tunney 2024-05-04 23:05:36 -07:00
parent d5ebb1fa5b
commit b0df6c1fce
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GPG key ID: BE714B4575D6E328
627 changed files with 3052 additions and 2077 deletions
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libc/time.h Normal file
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#ifndef COSMOPOLITAN_LIBC_TIME_H_
#define COSMOPOLITAN_LIBC_TIME_H_
#define TIME_UTC 1
COSMOPOLITAN_C_START_
struct tm {
int32_t tm_sec;
int32_t tm_min;
int32_t tm_hour;
int32_t tm_mday; /* 1-indexed */
int32_t tm_mon; /* 0-indexed */
int32_t tm_year; /* minus 1900 */
int32_t tm_wday;
int32_t tm_yday;
int32_t tm_isdst;
int64_t tm_gmtoff;
const char *tm_zone;
};
struct timezone {
int32_t tz_minuteswest;
int32_t tz_dsttime;
};
extern char *tzname[2];
extern long timezone;
extern int daylight;
void tzset(void) libcesque;
char *asctime(const struct tm *) libcesque;
char *asctime_r(const struct tm *, char *) libcesque;
char *strptime(const char *, const char *, struct tm *) libcesque;
int64_t mktime(struct tm *) libcesque;
int64_t timegm(struct tm *) libcesque;
int64_t timelocal(struct tm *) libcesque;
int64_t timeoff(struct tm *, long) libcesque;
size_t strftime(char *, size_t, const char *, const struct tm *) libcesque
strftimeesque(3) libcesque;
size_t wcsftime(wchar_t *, size_t, const wchar_t *,
const struct tm *) libcesque;
struct tm *gmtime(const int64_t *) libcesque;
struct tm *gmtime_r(const int64_t *, struct tm *) libcesque;
struct tm *localtime(const int64_t *) libcesque;
struct tm *localtime_r(const int64_t *, struct tm *) libcesque;
char *ctime(const int64_t *) libcesque;
char *ctime_r(const int64_t *, char *) libcesque;
double difftime(int64_t, int64_t)
pureconst libcesque;
int stime(const int64_t *) libcesque;
void tzset(void) libcesque;
#ifdef _COSMO_SOURCE
extern const char kWeekdayNameShort[7][4];
extern const char kWeekdayName[7][10];
extern const char kMonthNameShort[12][4];
extern const char kMonthName[12][10];
extern const unsigned short kMonthYearDay[2][12];
#define iso8601 __iso8601
char *iso8601(char[hasatleast 20], struct tm *) libcesque;
#define iso8601us __iso8601us
char *iso8601us(char[hasatleast 27], struct tm *, long) libcesque;
#endif /* _COSMO_SOURCE */
COSMOPOLITAN_C_END_
#endif /* COSMOPOLITAN_LIBC_TIME_H_ */