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/* -*- Mode: C -*- */
/*======================================================================
FILE: icaltime.h
CREATOR: eric 02 June 2000
$Id$
$Locker$
(C) COPYRIGHT 2000, Eric Busboom, http://www.softwarestudio.org
This program is free software; you can redistribute it and/or modify
it under the terms of either:
The LGPL as published by the Free Software Foundation, version
2.1, available at: http://www.fsf.org/copyleft/lesser.html
Or:
The Mozilla Public License Version 1.0. You may obtain a copy of
the License at http://www.mozilla.org/MPL/
The Original Code is eric. The Initial Developer of the Original
Code is Eric Busboom
======================================================================*/
#ifndef ICALTIME_H
#define ICALTIME_H
#include <time.h>
/* icaltime_span is returned by icalcomponent_get_span() */
struct icaltime_span {
time_t start; /* in UTC */
time_t end; /* in UTC */
int is_busy; /* 1->busy time, 0-> free time */
};
struct icaltimetype
{
int year;
int month;
int day;
int hour;
int minute;
int second;
int is_utc; /* 1-> time is in UTC timezone */
int is_date; /* 1 -> interpret this as date. */
};
struct icaltimetype icaltime_null_time(void);
int icaltime_is_null_time(struct icaltimetype t);
struct icaltimetype icaltime_normalize(struct icaltimetype t);
short icaltime_day_of_year(struct icaltimetype t);
struct icaltimetype icaltime_from_day_of_year(short doy, short year);
short icaltime_day_of_week(struct icaltimetype t);
short icaltime_start_doy_of_week(struct icaltimetype t);
struct icaltimetype icaltime_from_timet(time_t v, int is_date, int is_utc);
struct icaltimetype icaltime_from_string(const char* str);
time_t icaltime_as_timet(struct icaltimetype);
char* icaltime_as_ctime(struct icaltimetype);
short icaltime_week_number(short day_of_month, short month, short year);
struct icaltimetype icaltime_from_week_number(short week_number, short year);
int icaltime_compare(struct icaltimetype a,struct icaltimetype b);
int icaltime_compare_date_only(struct icaltimetype a, struct icaltimetype b);
short icaltime_days_in_month(short month,short year);
/* Routines for handling timezones */
/* Return the offset of the named zone as seconds. tt is a time
indicating the date for which you want the offset */
time_t icaltime_utc_offset(struct icaltimetype tt, const char* tzid);
time_t icaltime_local_utc_offset();
/* convert tt, of timezone tzid, into a utc time */
struct icaltimetype icaltime_as_utc(struct icaltimetype tt,const char* tzid);
/* convert tt, a time in UTC, into a time in timezone tzid */
struct icaltimetype icaltime_as_zone(struct icaltimetype tt,const char* tzid);
struct icaldurationtype
{
int is_neg;
unsigned int days;
unsigned int weeks;
unsigned int hours;
unsigned int minutes;
unsigned int seconds;
};
struct icaldurationtype icaldurationtype_from_timet(time_t t);
struct icaldurationtype icaldurationtype_from_string(const char*);
time_t icaldurationtype_as_timet(struct icaldurationtype duration);
struct icalperiodtype
{
struct icaltimetype start; /* Must be absolute */
struct icaltimetype end; /* Must be absolute */
struct icaldurationtype duration;
};
time_t icalperiodtype_duration(struct icalperiodtype period);
time_t icalperiodtype_end(struct icalperiodtype period);
struct icaltimetype icaltime_add(struct icaltimetype t,
struct icaldurationtype d);
struct icaldurationtype icaltime_subtract(struct icaltimetype t1,
struct icaltimetype t2);
#endif /* !ICALTIME_H */
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