7f602d5dba
Monotone-Parent: bc6abe537500d635cea12c3c4f611e68d4c2d725 Monotone-Revision: 792193186b20895dc235fa98dc63de1a0ece0a8f Monotone-Author: flachapelle@inverse.ca Monotone-Date: 2008-12-19T22:14:02 Monotone-Branch: ca.inverse.sogo
141 lines
3.8 KiB
Objective-C
141 lines
3.8 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 <Foundation/NSDate.h>
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#import <Foundation/NSArray.h>
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#import <NGExtensions/NSCalendarDate+misc.h>
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#import <NGExtensions/NGCalendarDateRange.h>
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#import "NSCalendarDate+ICal.h"
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#import "iCalRecurrenceCalculator.h"
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#import "iCalRecurrenceRule.h"
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@interface iCalDailyRecurrenceCalculator : iCalRecurrenceCalculator
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@end
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@interface iCalRecurrenceCalculator (PrivateAPI)
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- (NSCalendarDate *) lastInstanceStartDate;
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@end
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@implementation iCalDailyRecurrenceCalculator
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- (NSArray *)
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recurrenceRangesWithinCalendarDateRange: (NGCalendarDateRange *) _r
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{
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NSMutableArray *ranges;
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NSCalendarDate *firStart, *startDate, *endDate, *currentStartDate, *currentEndDate;
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long i;
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unsigned interval;
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firStart = [firstRange startDate];
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startDate = [_r startDate];
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endDate = [_r endDate];
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if ([endDate compare: firStart] == NSOrderedAscending)
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// Range ends before first occurrence
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return nil;
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interval = [rrule repeatInterval];
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// If rule is bound, check the bounds
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if (![rrule isInfinite])
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{
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NSCalendarDate *until, *lastDate;
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until = [rrule untilDate];
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if (until)
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lastDate = until;
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else
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lastDate = [firStart dateByAddingYears: 0 months: 0
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days: (interval
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* ([rrule repeatCount] - 1))];
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if ([lastDate compare: startDate] == NSOrderedAscending)
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// Range starts after last occurrence
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return nil;
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if ([lastDate compare: endDate] == NSOrderedAscending)
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// Range ends after last occurence; adjust end date
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endDate = lastDate;
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}
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currentStartDate = [firStart copy];
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ranges = [NSMutableArray array];
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i = 1;
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while ([currentStartDate compare: endDate] == NSOrderedAscending ||
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[currentStartDate compare: endDate] == NSOrderedSame)
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{
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if ([startDate compare: currentStartDate] == NSOrderedAscending ||
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[startDate compare: currentStartDate] == NSOrderedSame)
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{
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BOOL wrongDay = NO;
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unsigned int mask;
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NGCalendarDateRange *r;
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if ([rrule byDayMask])
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{
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mask = ([currentStartDate dayOfWeek]
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? (unsigned int) 1 << ([currentStartDate dayOfWeek])
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: iCalWeekDaySunday);
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if (([rrule byDayMask] & mask) != mask)
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wrongDay = YES;
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}
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if (wrongDay == NO)
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{
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currentEndDate = [currentStartDate addTimeInterval: [firstRange duration]];
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r = [NGCalendarDateRange calendarDateRangeWithStartDate: currentStartDate
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endDate: currentEndDate];
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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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currentStartDate = [firStart dateByAddingYears: 0 months: 0
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days: (interval * i)];
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i++;
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}
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return ranges;
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}
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- (NSCalendarDate *) lastInstanceStartDate
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{
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NSCalendarDate *firStart, *lastInstanceStartDate;
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if ([rrule repeatCount] > 0)
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{
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firStart = [firstRange startDate];
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lastInstanceStartDate = [firStart dateByAddingYears: 0 months: 0
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days: ([rrule repeatInterval]
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* ([rrule repeatCount] - 1))];
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}
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else
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lastInstanceStartDate = [super lastInstanceStartDate];
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return lastInstanceStartDate;
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}
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@end /* iCalDailyRecurrenceCalculator */
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