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NSDate+TKCategory.m
executable file
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NSDate+TKCategory.m
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//
// NSDateAdditions.m
// Created by Devin Ross on 7/28/09.
//
/*
tapku.com || http://github.com/devinross/tapkulibrary
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
*/
#import "NSDate+TKCategory.h"
@implementation NSDate (TKCategory)
- (TKDateInformation) dateInformationWithTimeZone:(NSTimeZone*)tz{
TKDateInformation info;
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
[gregorian setTimeZone:tz];
NSDateComponents *comp = [gregorian components:(NSMonthCalendarUnit | NSMinuteCalendarUnit | NSYearCalendarUnit |
NSDayCalendarUnit | NSWeekdayCalendarUnit | NSHourCalendarUnit | NSSecondCalendarUnit)
fromDate:self];
info.day = [comp day];
info.month = [comp month];
info.year = [comp year];
info.hour = [comp hour];
info.minute = [comp minute];
info.second = [comp second];
info.weekday = [comp weekday];
[gregorian release];
return info;
}
- (TKDateInformation) dateInformation{
TKDateInformation info;
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *comp = [gregorian components:(NSMonthCalendarUnit | NSMinuteCalendarUnit | NSYearCalendarUnit |
NSDayCalendarUnit | NSWeekdayCalendarUnit | NSHourCalendarUnit | NSSecondCalendarUnit)
fromDate:self];
info.day = [comp day];
info.month = [comp month];
info.year = [comp year];
info.hour = [comp hour];
info.minute = [comp minute];
info.second = [comp second];
info.weekday = [comp weekday];
[gregorian release];
return info;
}
+ (NSDate*) dateFromDateInformation:(TKDateInformation)info timeZone:(NSTimeZone*)tz{
NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
[gregorian setTimeZone:tz];
NSDateComponents *comp = [gregorian components:(NSYearCalendarUnit | NSMonthCalendarUnit) fromDate:[NSDate date]];
[comp setDay:info.day];
[comp setMonth:info.month];
[comp setYear:info.year];
[comp setHour:info.hour];
[comp setMinute:info.minute];
[comp setSecond:info.second];
[comp setTimeZone:tz];
return [gregorian dateFromComponents:comp];
}
+ (NSDate*) dateFromDateInformation:(TKDateInformation)info{
NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
NSDateComponents *comp = [gregorian components:(NSYearCalendarUnit | NSMonthCalendarUnit) fromDate:[NSDate date]];
[comp setDay:info.day];
[comp setMonth:info.month];
[comp setYear:info.year];
[comp setHour:info.hour];
[comp setMinute:info.minute];
[comp setSecond:info.second];
//[comp setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
return [gregorian dateFromComponents:comp];
}
- (int) daysBetweenDate:(NSDate*)d{
NSTimeInterval time = [self timeIntervalSinceDate:d];
return abs(time / 60 / 60/ 24);
}
// ------------------
- (NSString*) month{
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:@"MMMM"];
return [dateFormatter stringFromDate:self];
}
- (NSString*) year{
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:@"yyyy"];
return [dateFormatter stringFromDate:self];
}
// ------------------
+ (NSDate*) firstOfCurrentMonth{
NSDate *day = [NSDate date];
NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
NSDateComponents *comp = [gregorian components:(NSYearCalendarUnit | NSMonthCalendarUnit) fromDate:day];
[comp setDay:1];
return [gregorian dateFromComponents:comp];
}
+ (NSDate*) lastOfCurrentMonth{
NSDate *day = [NSDate date];
NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
NSDateComponents *comp = [gregorian components:(NSYearCalendarUnit | NSMonthCalendarUnit) fromDate:day];
[comp setDay:0];
[comp setMonth:comp.month+1];
return [gregorian dateFromComponents:comp];
}
- (NSDate*) timelessDate {
NSDate *day = self;
NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
NSDateComponents *comp = [gregorian components:(NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit) fromDate:day];
return [gregorian dateFromComponents:comp];
}
- (NSDate*) monthlessDate {
NSDate *day = self;
NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
NSDateComponents *comp = [gregorian components:(NSYearCalendarUnit | NSMonthCalendarUnit) fromDate:day];
return [gregorian dateFromComponents:comp];
}
- (NSDate*) firstOfCurrentMonthForDate {
NSDate *day = self;
NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
NSDateComponents *comp = [gregorian components:(NSYearCalendarUnit | NSMonthCalendarUnit) fromDate:day];
[comp setDay:1];
return [gregorian dateFromComponents:comp];
}
- (NSDate*) firstOfNextMonthForDate {
NSDate *day = self;
NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
NSDateComponents *comp = [gregorian components:(NSYearCalendarUnit | NSMonthCalendarUnit) fromDate:day];
[comp setDay:1];
[comp setMonth:comp.month+1];
return [gregorian dateFromComponents:comp];
}
- (NSNumber*) dayNumber{
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:@"d"];
return [NSNumber numberWithInt:[[dateFormatter stringFromDate:self] intValue]];
}
- (NSString*) hourString {
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:@"h a"];
return [dateFormatter stringFromDate:self];
}
- (NSString*) monthString{
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:@"MMMM"];
return [dateFormatter stringFromDate:self];
}
- (NSString*) yearString{
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:@"yyyy"];
return [dateFormatter stringFromDate:self];
}
- (NSString*) monthYearString{
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:@"MMMM yyyy"];
return [dateFormatter stringFromDate:self];
}
- (int) weekday{
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *comps = [gregorian components:(NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit | NSWeekdayCalendarUnit) fromDate:self];
int weekday = [comps weekday];
[gregorian release];
return weekday;
}
// Calendar starting on Monday instead of Sunday (Australia, Europe against US american calendar)
- (int) weekdayWithMondayFirst{
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *comps = [gregorian components:(NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit | NSWeekdayCalendarUnit) fromDate:self];
int weekday = [comps weekday];
[gregorian release];
CFCalendarRef currentCalendar = CFCalendarCopyCurrent();
if (CFCalendarGetFirstWeekday(currentCalendar) == 2) {
weekday -= 1;
if (weekday == 0) {
weekday = 7;
}
}
CFRelease(currentCalendar);
return weekday;
}
+ (NSDate*) yesterday{
TKDateInformation inf = [[NSDate date] dateInformation];
inf.day--;
return [NSDate dateFromDateInformation:inf];
}
/* ----- start snippet from http://www.alexcurylo.com/blog/2009/07/25/snippet-naturaldates/ ----- */
- (int) differenceInDaysTo:(NSDate *)toDate{
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *components = [gregorian components:NSDayCalendarUnit
fromDate:self
toDate:toDate
options:0];
NSInteger days = [components day];
[gregorian release];
return days;
}
- (int) differenceInMonthsTo:(NSDate *)toDate{
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *components = [gregorian components:NSMonthCalendarUnit
fromDate:[self monthlessDate]
toDate:[toDate monthlessDate]
options:0];
NSInteger months = [components month];
[gregorian release];
return months;
}
- (BOOL) isSameDay:(NSDate*)anotherDate{
NSCalendar* calendar = [NSCalendar currentCalendar];
NSDateComponents* components1 = [calendar components:(NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit) fromDate:self];
NSDateComponents* components2 = [calendar components:(NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit) fromDate:anotherDate];
return ([components1 year] == [components2 year] && [components1 month] == [components2 month] && [components1 day] == [components2 day]);
}
- (BOOL) isToday{
return [self isSameDay:[NSDate date]];
}
/* ----- end snippet ----- */
- (NSString*) dateDescription{
return [[self description] substringToIndex:10];
}
- (NSDate *) dateByAddingDays:(NSUInteger)days {
NSDateComponents *c = [[[NSDateComponents alloc] init] autorelease];
c.day = days;
return [[NSCalendar currentCalendar] dateByAddingComponents:c toDate:self options:0];
}
+ (NSDate *) dateWithDatePart:(NSDate *)aDate andTimePart:(NSDate *)aTime {
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:@"dd/MM/yyyy"];
NSString *datePortion = [dateFormatter stringFromDate:aDate];
[dateFormatter setDateFormat:@"HH:mm"];
NSString *timePortion = [dateFormatter stringFromDate:aTime];
[dateFormatter setDateFormat:@"dd/MM/yyyy HH:mm"];
NSString *dateTime = [NSString stringWithFormat:@"%@ %@",datePortion,timePortion];
return [dateFormatter dateFromString:dateTime];
}
+ (NSString*) dateInformationDescriptionWithInformation:(TKDateInformation)info{
return [NSString stringWithFormat:@"%d %d %d %d:%d:%d",info.month,info.day,info.year,info.hour,info.minute,info.second];
}
@end