/**
*
* return 0/REC_MATCH - the time falls in
* -1/REC_ERR - error
* 1/REC_NOMATCH - the time falls out
*/
int check_tmrec(tmrec_p _trp, ac_tm_p _atp, tr_res_p _tsw)
{
if(!_trp || !_atp || (!_IS_SET(_trp->duration) && !_IS_SET(_trp->dtend)))
return REC_ERR;
// it is before start date
if(_atp->time < _trp->dtstart)
return REC_NOMATCH;
// compute the duration of the reccurence interval
if(!_IS_SET(_trp->duration))
_trp->duration = _trp->dtend - _trp->dtstart;
if(_atp->time <= _trp->dtstart+_trp->duration)
{
if(_tsw)
{
if(_tsw->flag & TSW_RSET)
{
if(_tsw->rest>_trp->dtstart+_trp->duration-_atp->time)
_tsw->rest = _trp->dtstart+_trp->duration - _atp->time;
}
else
{
_tsw->flag |= TSW_RSET;
_tsw->rest = _trp->dtstart+_trp->duration - _atp->time;
}
}
return REC_MATCH;
}
// after the bound of recurrence
if(_IS_SET(_trp->until))
{
if(_atp->time >= _trp->until + _trp->duration)
return REC_NOMATCH;
}
else
{
if(!_IS_SET(_trp->freq) &&
_atp->time >= _trp->dtstart + _trp->duration)
return REC_NOMATCH;
}
// check if the instance of recurence matches the 'interval'
if(check_freq_interval(_trp, _atp)!=REC_MATCH)
return REC_NOMATCH;
if(check_min_unit(_trp, _atp, _tsw)!=REC_MATCH)
return REC_NOMATCH;
if(check_byxxx(_trp, _atp)!=REC_MATCH)
return REC_NOMATCH;
return REC_MATCH;
}
int check_freq_interval(tmrec_p _trp, ac_tm_p _atp)
{
int _t0, _t1;
struct tm _tm;
if(!_trp || !_atp)
return REC_ERR;
if(!_IS_SET(_trp->freq))
return REC_NOMATCH;
if(!_IS_SET(_trp->interval) || _trp->interval==1)
return REC_MATCH;
switch(_trp->freq)
{
case FREQ_DAILY:
case FREQ_WEEKLY:
memset(&_tm, 0, sizeof(struct tm));
_tm.tm_year = _trp->ts.tm_year;
_tm.tm_mon = _trp->ts.tm_mon;
_tm.tm_mday = _trp->ts.tm_mday;
_t0 = (int)mktime(&_tm);
memset(&_tm, 0, sizeof(struct tm));
_tm.tm_year = _atp->t.tm_year;
_tm.tm_mon = _atp->t.tm_mon;
_tm.tm_mday = _atp->t.tm_mday;
_t1 = (int)mktime(&_tm);
if(_trp->freq == FREQ_DAILY)
return (((_t1-_t0)/(24*3600))%_trp->interval==0)?
REC_MATCH:REC_NOMATCH;
#ifdef USE_YWEEK_U
_t0 -= _trp->ts.tm_wday*24*3600;
_t1 -= _atp->t.tm_wday*24*3600;
#else
_t0 -= ((_trp->ts.tm_wday+6)%7)*24*3600;
_t1 -= ((_atp->t.tm_wday+6)%7)*24*3600;
#endif
return (((_t1-_t0)/(7*24*3600))%_trp->interval==0)?
REC_MATCH:REC_NOMATCH;
case FREQ_MONTHLY:
_t0 = (_atp->t.tm_year-_trp->ts.tm_year)*12
+ _atp->t.tm_mon-_trp->ts.tm_mon;
return (_t0%_trp->interval==0)?REC_MATCH:REC_NOMATCH;
case FREQ_YEARLY:
return ((_atp->t.tm_year-_trp->ts.tm_year)%_trp->interval==0)?
REC_MATCH:REC_NOMATCH;
}
return REC_NOMATCH;
}