mirror of
https://codeberg.org/grunfink/snac2.git
synced 2024-12-25 00:43:38 +00:00
111 lines
2.4 KiB
C
111 lines
2.4 KiB
C
/* copyright (c) 2022 - 2024 grunfink et al. / MIT license */
|
|
|
|
#ifndef _XS_TIME_H
|
|
|
|
#define _XS_TIME_H
|
|
|
|
#include <time.h>
|
|
|
|
xs_str *xs_str_time(time_t t, const char *fmt, int local);
|
|
#define xs_str_localtime(t, fmt) xs_str_time(t, fmt, 1)
|
|
#define xs_str_utctime(t, fmt) xs_str_time(t, fmt, 0)
|
|
#define xs_str_iso_date(t) xs_str_time(t, "%Y-%m-%dT%H:%M:%SZ", 0)
|
|
time_t xs_parse_iso_date(const char *iso_date, int local);
|
|
time_t xs_parse_time(const char *str, const char *fmt, int local);
|
|
#define xs_parse_localtime(str, fmt) xs_parse_time(str, fmt, 1)
|
|
#define xs_parse_utctime(str, fmt) xs_parse_time(str, fmt, 0)
|
|
xs_str *xs_str_time_diff(time_t time_diff);
|
|
|
|
#ifdef XS_IMPLEMENTATION
|
|
|
|
xs_str *xs_str_time(time_t t, const char *fmt, int local)
|
|
/* returns a string with a formated time */
|
|
{
|
|
struct tm tm;
|
|
char tmp[64];
|
|
|
|
if (t == 0)
|
|
t = time(NULL);
|
|
|
|
if (local)
|
|
localtime_r(&t, &tm);
|
|
else
|
|
gmtime_r(&t, &tm);
|
|
|
|
strftime(tmp, sizeof(tmp), fmt, &tm);
|
|
|
|
return xs_str_new(tmp);
|
|
}
|
|
|
|
|
|
xs_str *xs_str_time_diff(time_t time_diff)
|
|
/* returns time_diff in seconds to 'human' units (d:hh:mm:ss) */
|
|
{
|
|
int secs = time_diff % 60;
|
|
int mins = (time_diff /= 60) % 60;
|
|
int hours = (time_diff /= 60) % 24;
|
|
int days = (time_diff /= 24);
|
|
|
|
return xs_fmt("%d:%02d:%02d:%02d", days, hours, mins, secs);
|
|
}
|
|
|
|
|
|
char *strptime(const char *s, const char *format, struct tm *tm);
|
|
|
|
time_t xs_parse_time(const char *str, const char *fmt, int local)
|
|
{
|
|
time_t t = 0;
|
|
|
|
#ifndef WITHOUT_STRPTIME
|
|
|
|
struct tm tm = {0};
|
|
|
|
strptime(str, fmt, &tm);
|
|
|
|
/* try to guess the Daylight Saving Time */
|
|
if (local)
|
|
tm.tm_isdst = -1;
|
|
|
|
t = local ? mktime(&tm) : timegm(&tm);
|
|
|
|
#endif /* WITHOUT_STRPTIME */
|
|
|
|
return t;
|
|
}
|
|
|
|
|
|
time_t xs_parse_iso_date(const char *iso_date, int local)
|
|
/* parses a YYYY-MM-DDTHH:MM:SS date string */
|
|
{
|
|
time_t t = 0;
|
|
|
|
#ifndef WITHOUT_STRPTIME
|
|
|
|
t = xs_parse_time(iso_date, "%Y-%m-%dT%H:%M:%S", local);
|
|
|
|
#else /* WITHOUT_STRPTIME */
|
|
|
|
struct tm tm = {0};
|
|
|
|
if (sscanf(iso_date, "%d-%d-%dT%d:%d:%d",
|
|
&tm.tm_year, &tm.tm_mon, &tm.tm_mday,
|
|
&tm.tm_hour, &tm.tm_min, &tm.tm_sec) == 6) {
|
|
|
|
tm.tm_year -= 1900;
|
|
tm.tm_mon -= 1;
|
|
|
|
if (local)
|
|
tm.tm_isdst = -1;
|
|
|
|
t = local ? mktime(&tm) : timegm(&tm);
|
|
}
|
|
|
|
#endif /* WITHOUT_STRPTIME */
|
|
|
|
return t;
|
|
}
|
|
|
|
|
|
#endif /* XS_IMPLEMENTATION */
|
|
|
|
#endif /* _XS_TIME_H */
|