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Revision: 3505
at July 9, 2008 22:41 by zingo
Updated Code 
// For a internationalised version
// see: http://snipplr.com/view/7196/kill-app-after-expire-date-suicidal-code-redux/

// Two-week expiration
#define EXPIREAFTERDAYS 14

#if EXPIREAFTERDAYS
   // Idea from Brian Cooke.
   NSString* nowString =
      [NSString stringWithUTF8String:__DATE__];
   NSCalendarDate* nowDate =
      [NSCalendarDate dateWithNaturalLanguageString:nowString];
   NSCalendarDate* expireDate =
      [nowDate addTimeInterval:(60*60*24* EXPIREAFTERDAYS)];

   if ([expireDate earlierDate:[NSDate date]] == expireDate)
   {
      // Run an alert or whatever

      // Quit!
      [NSApp terminate:self];
   }
#endif

Revision: 3504
at August 3, 2007 22:48 by zingo
Initial Code 
// Two-week expiration
#define EXPIREAFTERDAYS 14

#if EXPIREAFTERDAYS
   // Idea from Brian Cooke.
   NSString* nowString =
      [NSString stringWithUTF8String:__DATE__];
   NSCalendarDate* nowDate =
      [NSCalendarDate dateWithNaturalLanguageString:nowString];
   NSCalendarDate* expireDate =
      [nowDate addTimeInterval:(60*60*24* EXPIREAFTERDAYS)];

   if ([expireDate earlierDate:[NSDate date]] == expireDate)
   {
      // Run an alert or whatever

      // Quit!
      [NSApp terminate:self];
   }
#endif
Initial URL 
http://www.red-sweater.com/blog/371/suicidal-code
Initial Description 
Using a gcc predefined macro, __DATE__, the code can know for itself when it was compiled, and build in an expiration date based on that value.

For a internationalised version see: http://snipplr.com/view/7196/kill-app-after-expire-date-suicidal-code-redux/
Initial Title 
kill app after expire date
Initial Tags 
osx
Initial Language 
Objective C