Re: NSCalendar behavior

[Dr. H. Nikolaus Schaller]

Am 01.03.2015 um 12:58 schrieb Alessandro Sangiuliano <alex22_7@hotmail.com>:

> Il 01/03/2015 11:06, Riccardo Mottola ha scritto:
>> Hi,
>> 
>> Alessandro Sangiuliano wrote:
>>> NSRange range = [gregorian rangeOfUnit:NSDayCalendarUnit 
>>> inUnit:NSMonthCalendarUnit forDate: [gregorian 
>>> dateFromComponents:components]];
>>> monthDays = range.length;
>>> NSLog(@"Numbers of Days %ld", monthDays);
>>> 
>>> From the NSLog I can see that monthDays is "0", insted on OS X is 28 (for 
>>> february, 31 for Jan, and so on). What I wrong? 
>> Have you checked out the components? e.g. is "gregorian" valid? components?
>> 
>> Can you split this code up in a small example that can be run from the 
>> command line? so I can compare how it works on 10.6 and 10.4 for example and 
>> see if it works on GNUstep, debug, etc etc.
>> 
>> Riccardo
>> 
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>> 
> 
> Ok, when I'll have the time I'll write a little tool to test:

I would suggest not to write a ‚tool' but a Unit Test.

> 
> 1) NSCalendar initialization
> 2) NSDateComponents creation from NSCalendar
> 3) Some other things similar to the previous
> 4) If you have requests, add them...
> 
> In the while I added this code to that method:
> 
> - (void) setMonthDaysMonthAndYearFromComponents:(NSDateComponents*)components
> {
>        [monthLabel setStringValue:[monthSymbols objectAtIndex:[components 
> month] - 1]];
>        [yearLabel setStringValue:[NSString stringWithFormat:@"%ld", 
> [components year]]];
>        NSLog(@"Components verification:\nday %ld\nmonth %ld\nyear %ld.\n 
> Calendar verification %@", [components day], [components month], [components 
> year], [gregorian description]);
>                             NSDate *tmp = [gregorian 
> dateFromComponents:components];
>                             NSLog(@"Date from components verification: %@", 
> [tmp description]);
>        NSRange range = [gregorian rangeOfUnit:NSDayCalendarUnit 
> inUnit:NSMonthCalendarUnit forDate:[gregorian dateFromComponents:components]];
>        monthDays = range.length;
>        NSLog(@"Numbers of Days %ld", monthDays);
>                             monthDays = 31;
> }
> 
> All the NSLog are printing the correct output, so it is all valid.
> 
> Also, the xcodeproj file on gitub, in the Calendar root directory was 
> generated by Xcode 3.2.2 from OS X 10.6.8
> 
> Alex.
> 
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