How can I format time intervals in Cocoa?

Question

I'm looking for a class that formats time intervals like this:

1 hour 3 minutes
2 hours 5 minutes 12 seconds
5 days 2 hours

Is there anything built-in or a library that supports this kind of time interval formatting?

I thought about doing it myself, but there are all sorts of problems:

• Localization
• Non-gregorian calendars.

Answer 1

You can find some hints on CocoaDev Forums. Suggested solutions involve NSCalendar and NSDateComponents.