114 lines
2.2 KiB
C
114 lines
2.2 KiB
C
#ifndef LIBEPOCH_H
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#define LIBEPOCH_H 1
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#include <stdint.h>
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#define SECONDS_PER_MINUTE 60
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#define SECONDS_PER_HOUR 60 * 60
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#define SECONDS_PER_DAY 60 * 60 * 24
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typedef enum {
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normalYear,
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leapYear,
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} yearTag;
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typedef struct {
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yearTag tag;
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uint32_t year;
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} Year;
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typedef enum {
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January = 1,
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February = 2,
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March = 3,
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April = 4,
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May = 5,
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June = 6,
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July = 7,
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August = 8,
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September = 9,
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October = 10,
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November = 11,
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December = 12,
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} Month;
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typedef enum {
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Thursday = 0,
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Friday = 1,
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Saturday = 2,
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Sunday = 3,
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Monday = 4,
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Tuesday = 5,
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Wednesday = 6,
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} Weekday;
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typedef enum {
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Offset,
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UTC,
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} timeZoneTag;
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typedef enum {
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Positive,
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Negative,
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} offsetSign;
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typedef struct {
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offsetSign sign;
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uint8_t hours;
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uint8_t minutes;
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} TzOffset;
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typedef struct {
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timeZoneTag tag;
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TzOffset *offset;
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} TimeZone;
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typedef struct {
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Year year;
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Month month;
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uint8_t day;
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uint8_t hour;
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uint8_t minute;
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uint8_t second;
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int64_t nanoseconds;
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TimeZone zone;
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} DateTime;
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typedef enum {
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YearPrecision,
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MonthPrecision,
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DayPrecision,
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HourPrecision,
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MinutePrecision,
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SecondPrecision,
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NanoSecondPrecision,
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} datetimePrecision;
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void yearNew(Year *year, int32_t inner);
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uint16_t yearGetDays(Year *year);
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int64_t yearGetSeconds(Year *year);
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int32_t yearGetInner(Year *year);
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void yearIncrement(Year *year);
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void yearDecrement(Year *year);
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uint8_t monthGetDays(Month month, Year *year);
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uint32_t monthGetSeconds(Month month, Year *year);
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int monthIncrement(Month *month);
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int monthDecrement(Month *month);
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const char* monthName(Month month);
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const char* monthAbbr(Month month);
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int parseMonth(const char *s);
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const char* weekdayName(Weekday day);
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const char* weekdayAbbr(Weekday day);
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int parseWeekday(const char *s);
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int offsetNew(TzOffset *offs, offsetSign sign, uint8_t hours, uint8_t minutes);
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void printTz(TimeZone *zone);
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int64_t timezoneAsSeconds(TimeZone *tz);
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int32_t dateTimeGetYear(DateTime *self);
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int64_t dateTimeGetTimestampNaive(DateTime *self);
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int64_t dateTimeGetTimestamp(DateTime *self);
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#endif // !LIBEPOCH_H
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