RE: User selection of time zones

FYI For backwards compatability I now have xIUA build a time zone offset
table the first time it is needed.  I just uploaded the changes.

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Carl W. Brown
> Sent: Saturday, February 21, 2004 5:49 PM
> To: icu list
> Subject: User selection of time zones
>
>
> I noticed that in changing the time zone support code for ICU 2.8 that the
> offset table is gone.  That makes sense in that the time zone offset is no
> longer fixed.  This also means that finding time zone by offset is slower
> than snail snot.
>
> I think that using country from locale is probably the best way to build a
> user times zone selection list.  At times you might want to include a
> selection of country codes because someone in Guam for example
> will probably
> use the "en_US" locale.
>
> Does anyone have a better idea of how to pick time zones?
>
> Another subject is how to limit the selection of time zones.  It
> seems that
> some of the selections such as "US/" and "SystemV/" are duplicates and can
> be filtered out of selection lists.
>
> To remove duplicates I filter out zones that do not match:
>
> {
>         "Afr",
>         "Ame",
>         "Ant",
>         "Asi",
>         "Atl",
>         "Aus",
>         "Eur",
>         "Ind",
>         "Pac",
> 	  NULL
> };
>
> I feel that the "Etc" and others are probably not worth using except for
> very special circumstances anyway.
>
> Thanks,
> Carl
>
>
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