52b9643f43
Monotone-Revision: 98210b359e6e3fe57ef302cfac263161a8f25967 Monotone-Author: wsourdeau@inverse.ca Monotone-Date: 2007-06-13T02:34:29 Monotone-Branch: ca.inverse.sogo
144 lines
4 KiB
Objective-C
144 lines
4 KiB
Objective-C
/* iCalTimeZone.m - this file is part of SOPE
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*
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* Copyright (C) 2006 Inverse groupe conseil
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*
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* Author: Wolfgang Sourdeau <wsourdeau@inverse.ca>
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#import <Foundation/NSArray.h>
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#import <Foundation/NSCalendarDate.h>
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#import <Foundation/NSString.h>
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#import <Foundation/NSTimeZone.h>
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#import "NSCalendarDate+NGCards.h"
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#import "NSString+NGCards.h"
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#import "iCalTimeZonePeriod.h"
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#import "iCalTimeZone.h"
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@implementation iCalTimeZone
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- (Class) classForTag: (NSString *) classTag
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{
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Class tagClass;
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if ([classTag isEqualToString: @"STANDARD"]
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|| [classTag isEqualToString: @"DAYLIGHT"])
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tagClass = [iCalTimeZonePeriod class];
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else if ([classTag isEqualToString: @"TZID"])
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tagClass = [CardElement class];
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else
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tagClass = [super classForTag: classTag];
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return tagClass;
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}
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- (void) setTzId: (NSString *) tzId
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{
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[[self uniqueChildWithTag: @"tzid"] setValue: 0 to: tzId];
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}
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- (NSString *) tzId
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{
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return [[self uniqueChildWithTag: @"tzid"] value: 0];
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}
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- (NSCalendarDate *) _occurenceForPeriodNamed: (NSString *) pName
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forDate: (NSCalendarDate *) aDate
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{
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NSArray *periods;
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iCalTimeZonePeriod *period;
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NSCalendarDate *occurence;
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periods = [self childrenWithTag: pName];
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if ([periods count])
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{
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period = (iCalTimeZonePeriod *) [periods objectAtIndex: 0];
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occurence = [period occurenceForDate: aDate];
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}
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else
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occurence = nil;
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return occurence;
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}
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- (iCalTimeZonePeriod *) periodForDate: (NSCalendarDate *) date
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{
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NSCalendarDate *daylightOccurence, *standardOccurence;
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iCalTimeZonePeriod *period;
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/* FIXME, this could cause crashes when timezones are not properly
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specified, but let's say it won't happen often... */
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daylightOccurence = [self _occurenceForPeriodNamed: @"daylight"
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forDate: date];
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standardOccurence = [self _occurenceForPeriodNamed: @"standard"
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forDate: date];
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if ([date earlierDate: daylightOccurence] == date
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|| [date earlierDate: standardOccurence] == standardOccurence)
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period = (iCalTimeZonePeriod *) [self uniqueChildWithTag: @"standard"];
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else
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period = (iCalTimeZonePeriod *) [self uniqueChildWithTag: @"daylight"];
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NSLog (@"chosen period: '%@'", [period tag]);
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return period;
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}
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- (NSCalendarDate *) _computedDateTimeForDate: (NSCalendarDate *) date
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{
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NSCalendarDate *tmpDate;
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NSTimeZone *utc;
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utc = [NSTimeZone timeZoneWithName: @"GMT"];
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tmpDate = [date copy];
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[tmpDate autorelease];
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[tmpDate setTimeZone: utc];
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return [tmpDate addYear: 0 month: 0 day: 0
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hour: 0 minute: 0
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second: [[self periodForDate: date] secondsOffsetFromGMT]];
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}
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- (NSString *) dateTimeStringForDate: (NSCalendarDate *) date
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{
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return [[self _computedDateTimeForDate: date]
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iCalFormattedDateTimeString];
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}
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- (NSString *) dateStringForDate: (NSCalendarDate *) date
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{
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return [[self _computedDateTimeForDate: date]
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iCalFormattedDateString];
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}
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- (NSCalendarDate *) dateForDateTimeString: (NSString *) string
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{
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NSCalendarDate *tmpDate;
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iCalTimeZonePeriod *period;
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tmpDate = [string asCalendarDate];
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period = [self periodForDate: tmpDate];
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return [tmpDate addYear: 0 month: 0 day: 0
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hour: 0 minute: 0
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second: -[period secondsOffsetFromGMT]];
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}
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@end
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