82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/* Miscellaneous time-related utilities
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*
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* Copyright (C) 1998 The Free Software Foundation
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*
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* Authors: Federico Mena <federico@nuclecu.unam.mx>
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* Miguel de Icaza <miguel@nuclecu.unam.mx>
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*/
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#ifndef TIMEUTIL_H
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#define TIMEUTIL_H
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#include <time.h>
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time_t time_from_isodate (char *str);
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time_t time_from_start_duration (time_t start, char *duration);
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char *isodate_from_time_t (time_t t);
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int get_time_t_hour (time_t t);
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int isodiff_to_secs (char *str);
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char *isodiff_from_secs (int secs);
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time_t time_add_minutes (time_t time, int minutes);
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time_t time_add_day (time_t time, int days);
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time_t time_add_week (time_t time, int weeks);
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time_t time_add_month (time_t time, int months);
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time_t time_add_year (time_t time, int years);
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/* Returns pointer to a statically-allocated buffer with a string of the form
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* 3am, 4am, 12pm, 08h, 17h, etc.
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* The string is internationalized, hopefully correctly.
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*/
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char *format_simple_hour (int hour, int use_am_pm);
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/* Returns the number of days in the specified month. Years are full years (starting from year 1).
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* Months are in [0, 11].
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*/
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int time_days_in_month (int year, int month);
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/* Converts the specified date to a time_t at the start of the specified day. Years are full years
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* (starting from year 1). Months are in [0, 11]. Days are 1-based.
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*/
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time_t time_from_day (int year, int month, int day);
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time_t time_day_hour (time_t t, int hour);
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/* For the functions below, time ranges are considered to contain the start time, but not the end
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* time.
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*/
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/* These two functions take a time value and return the beginning or end of the corresponding year,
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* respectively.
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*/
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time_t time_year_begin (time_t t);
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time_t time_year_end (time_t t);
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/* These two functions take a time value and return the beginning or end of the corresponding month,
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* respectively.
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*/
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time_t time_month_begin (time_t t);
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time_t time_month_end (time_t t);
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/* These functions take a time value and return the beginning or end of the corresponding week,
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* respectively. This takes into account the global week_starts_on_monday flag.
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*/
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time_t time_week_begin (time_t t);
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time_t time_week_end (time_t t);
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/* These two functions take a time value and return the beginning or end of the corresponding day,
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* respectively.
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*/
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time_t time_day_begin (time_t t);
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time_t time_day_end (time_t t);
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time_t parse_date (char *str);
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void print_time_t (time_t t);
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#endif
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