cd510f7473
Monotone-Revision: 4e643e3e8f08c6cdd2abe4483bdb2cdb7dc15066 Monotone-Author: wsourdeau@inverse.ca Monotone-Date: 2007-06-07T16:17:51 Monotone-Branch: ca.inverse.sogo
102 lines
3.1 KiB
Objective-C
102 lines
3.1 KiB
Objective-C
/*
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Copyright (C) 2004-2005 SKYRIX Software AG
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This file is part of SOPE.
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SOPE is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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SOPE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with SOPE; see the file COPYING. If not, write to the
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Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA.
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*/
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#import <NGExtensions/NSCalendarDate+misc.h>
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#import "iCalRecurrenceCalculator.h"
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@interface iCalYearlyRecurrenceCalculator : iCalRecurrenceCalculator
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@end
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#import <NGExtensions/NGCalendarDateRange.h>
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#import "iCalRecurrenceRule.h"
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#import "NSCalendarDate+ICal.h"
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@interface iCalRecurrenceCalculator(PrivateAPI)
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- (NSCalendarDate *)lastInstanceStartDate;
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@end
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@implementation iCalYearlyRecurrenceCalculator
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- (NSArray *)recurrenceRangesWithinCalendarDateRange:(NGCalendarDateRange *)_r{
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NSMutableArray *ranges;
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NSCalendarDate *firStart, *rStart, *rEnd, *until;
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unsigned i, count, interval;
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int diff;
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firStart = [self->firstRange startDate];
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rStart = [_r startDate];
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rEnd = [_r endDate];
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interval = [self->rrule repeatInterval];
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until = [self lastInstanceStartDate];
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if (until) {
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if ([until compare:rStart] == NSOrderedAscending)
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return nil;
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if ([until compare:rEnd] == NSOrderedDescending)
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rEnd = until;
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}
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diff = [firStart yearsBetweenDate:rStart];
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if ((diff != 0) && [rStart compare:firStart] == NSOrderedAscending)
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diff = -diff;
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count = [rStart yearsBetweenDate:rEnd] + 1;
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ranges = [NSMutableArray arrayWithCapacity:count];
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for (i = 0 ; i < count; i++) {
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int test;
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test = diff + i;
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if ((test >= 0) && (test % interval) == 0) {
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NSCalendarDate *start, *end;
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NGCalendarDateRange *r;
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start = [firStart dateByAddingYears:diff + i
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months:0
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days:0];
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[start setTimeZone:[firStart timeZone]];
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end = [start addTimeInterval:[self->firstRange duration]];
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r = [NGCalendarDateRange calendarDateRangeWithStartDate:start
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endDate:end];
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if ([_r containsDateRange:r])
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[ranges addObject:r];
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}
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}
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return ranges;
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}
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- (NSCalendarDate *)lastInstanceStartDate {
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if ([self->rrule repeatCount] > 0) {
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NSCalendarDate *until;
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unsigned years, interval;
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interval = [self->rrule repeatInterval];
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years = [self->rrule repeatCount] * interval;
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until = [[self->firstRange startDate] dateByAddingYears:years
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months:0
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days:0];
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return until;
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}
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return [super lastInstanceStartDate];
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}
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@end /* iCalYearlyRecurrenceCalculator */
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