Sync-Engine : timezone conversions

[abompard]

Hello John,

I'm looking at a conversion problem in Sync-Engine : events set as "all day
long" on the device are synced to the computer with the wrong date.
What happens is that the start time on the device is the start day at
midnight, minus the timezone. When we convert it to opensync, we only keep
the date part and just strip the time part, resulting in the wrong day when
the timezone is positive.
I'm looking into that, and found that the ConvertASTimezoneToVcal function
in formats/tzconv.py is disabled (it returns immediatly). Any reason for
that ? Is the timezone conversion from airsync to opensync a work in
progress ? Can I help you with it ?

Thanks

Aurélien
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[Mark Ellis]

On Sat, 2009-10-31 at 12:16 +0100, Aurelien Bompard wrote:

> Hello John,
>
> I'm looking at a conversion problem in Sync-Engine : events set as "all day
> long" on the device are synced to the computer with the wrong date.
> What happens is that the start time on the device is the start day at
> midnight, minus the timezone. When we convert it to opensync, we only keep
> the date part and just strip the time part, resulting in the wrong day when
> the timezone is positive.
> I'm looking into that, and found that the ConvertASTimezoneToVcal function
> in formats/tzconv.py is disabled (it returns immediatly). Any reason for
> that ? Is the timezone conversion from airsync to opensync a work in
> progress ? Can I help you with it ?
>
> Thanks
>
> Aurélien

There are a couple of bug reports in sourceforge about this, I've never
got around to looking at it.

Can't comment on why the code is like it is, but if you can fix it
you'll be an absolute star !

Mark



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[Dr J A Gow-2]

On Sat, 2009-10-31 at 12:16 +0100, Aurelien Bompard wrote:

> Hello John,
>
> I'm looking at a conversion problem in Sync-Engine : events set as "all day
> long" on the device are synced to the computer with the wrong date.
> What happens is that the start time on the device is the start day at
> midnight, minus the timezone. When we convert it to opensync, we only keep
> the date part and just strip the time part, resulting in the wrong day when
> the timezone is positive.
> I'm looking into that, and found that the ConvertASTimezoneToVcal function
> in formats/tzconv.py is disabled (it returns immediatly). Any reason for
> that ? Is the timezone conversion from airsync to opensync a work in
> progress ? Can I help you with it ?
>

I'll need to go back and check why this was commented out: it could be
something I commented out during development and forgot to re-include
it. I don't remember there being a problem with this function as such.

By all means try including it again and see what happens - let me know
the result. I am currently working on the Opensync 0.4x stuff - which
version of Opensync are you running?


John.


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[abompard]

> I'll need to go back and check why this was commented out: it could be
> something I commented out during development and forgot to re-include
> it. I don't remember there being a problem with this function as such.
> By all means try including it again and see what happens - let me know
> the result.

Sure, will do.

> I am currently working on the Opensync 0.4x stuff - which
> version of Opensync are you running?

I'm still using 0.22. Good thing, we won't step on each other's feet then.


Aurélien
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themselves upon execution." -- Robert Sewell

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