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Finish dateTimeFromTimestampParts and dateTimeFromTimespec

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functions; TODO - write tests
This commit is contained in:
Nathan Fisher 2024-02-09 11:04:05 -05:00
parent c2b926daf0
commit 9eeb0660e4
1 changed files with 24 additions and 11 deletions
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35
datetime.c
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@ -85,27 +85,39 @@ Weekday dateTimeGetWeekday(DateTime *self) {
void dateTimeFromTimestampParts(int64_t seconds, int64_t nanoseconds, DateTime *dt) { void dateTimeFromTimestampParts(int64_t seconds, int64_t nanoseconds, DateTime *dt) {
int64_t secs; int64_t secs;
Month month;
int ret = 0; int ret = 0;
dt->nanoseconds = nanoseconds; dt->nanoseconds = nanoseconds;
if (seconds < 0) { if (seconds < 0) {
secs = seconds; secs = seconds;
yearNew(&dt->year, 1969); yearNew(&dt->year, 1969);
while (secs > -yearGetSeconds(&dt->year)) { while (secs < yearGetSeconds(&dt->year)) {
secs += yearGetSeconds(&dt->year); secs += yearGetSeconds(&dt->year);
yearDecrement(&dt->year); yearDecrement(&dt->year);
} }
month = December; dt->month = December;
while (ret == 0) { while (ret == 0) {
if (secs > monthGetSeconds(month, &dt->year)) break; if (-secs < monthGetSeconds(dt->month, &dt->year)) break;
secs += monthGetSeconds(month, &dt->year); secs += monthGetSeconds(dt->month, &dt->year);
monthDecrement(&month); ret = monthDecrement(&dt->month);
} }
ret = 0; ret = 0;
dt->month = month; dt->day = monthGetDays(dt->month, &dt->year);
dt->day = monthGetDays(month, &dt->year); while (dt->day > 0 && seconds < -SECONDS_PER_DAY) {
//todo seconds += SECONDS_PER_DAY;
dt->day -=1;
}
dt->hour = 23;
while (dt->hour > 0 && seconds < -SECONDS_PER_HOUR) {
seconds += SECONDS_PER_HOUR;
dt->hour -= 1;
}
dt->minute = 59;
while (dt->minute > 0 && seconds < -60) {
seconds += 60;
dt->minute -= 1;
}
dt->second = seconds + 60;
} else if (seconds > 0) { } else if (seconds > 0) {
secs = seconds; secs = seconds;
yearNew(&dt->year, 1970); yearNew(&dt->year, 1970);
@ -114,9 +126,9 @@ void dateTimeFromTimestampParts(int64_t seconds, int64_t nanoseconds, DateTime *
yearIncrement(&dt->year); yearIncrement(&dt->year);
} }
dt->month = January; dt->month = January;
while (monthGetSeconds(dt->month, &dt->year) < secs) { while (ret == 0 && monthGetSeconds(dt->month, &dt->year) < secs) {
secs -= (int64_t)monthGetSeconds(dt->month, &dt->year); secs -= (int64_t)monthGetSeconds(dt->month, &dt->year);
monthIncrement(&dt->month); ret = monthIncrement(&dt->month);
} }
dt->day = secs / SECONDS_PER_DAY; dt->day = secs / SECONDS_PER_DAY;
secs %= SECONDS_PER_DAY; secs %= SECONDS_PER_DAY;
@ -136,4 +148,5 @@ void dateTimeFromTimestampParts(int64_t seconds, int64_t nanoseconds, DateTime *
} }
void dateTimeFromTimespec(struct timespec *ts, DateTime *dt) { void dateTimeFromTimespec(struct timespec *ts, DateTime *dt) {
dateTimeFromTimestampParts(ts->tv_sec, ts->tv_nsec, dt);
} }