Antw: utility creating a dst cache

[WHarms at bfs.de]

hi chuck,
the modification time is store in the filesystem, for the more paranoid
you can use dnotify() an become informed when ever the dir is used. fast
way is to store a checksum e.g. md5 and compare after a notify event.

walter



- - - - - - - - - - - - - - Originalnachricht - - - - - - - - - - - - - -
Von: Chuck Soper <chucks at lmi.net>
Betreff: utility creating a dst cache
Datum: 01.08.03 21:43

Hello,
I'm writing a utility that uses the tz database. One of the features 
is to quickly (via a cache saved to disk) display daylight saving 
times for a given year and tz location. If the tz package is updated 
then I will need to re-create my dst cache.

Is there a way to programmatically determine if the tz package has 
been updated since the last time I ran my utility? Is there a way to 
determine if a specific zoneinfo file has been updated?
Thanks, Chuck