[Tilesathome] deleting temp folder (was Problem under windows again)

[Knut Arne Bjørndal]

On Thu, Aug 21, 2008 at 08:46:57AM +0200, spaetz wrote:
> Matthias Julius wrote:
> > In the mean time I was so annoyed by the lack of a decent exception
> > handling in Perl that I was almost ready to re-implement the whole
> > thing in Python (which would also have the potential advantage that
> > some code could be shared between the server and the client).
> 
> I have the zipping and uploading code ready in python if you need
> it. It's even threaded already :-). You just need to plug in the magic
> rendering part.
> I somewhat dislike introducing new perl dependencies (make installation ever
> more difficult), that's part of what makes python so charming. "It
> comes with batteries included". But seriously, we depend on perl for
> or/p and preprocessing, so it would not make sense to use another
> language (except if you would also provide or/py ;-) ). Besides,
> deelkar is not very comfortable in python, I believe.

I think occasionally adding new dependencies are something we just
have to live with, coding perl without adding a CPAN module every so
often means you spend lots of time reinventing wheels.

After all the time I've spent trying to figure out what extra python
package something needs I don't see where python is in any way better
than perl in this regard.

> > But, after that I found the Error module on CPAN which implements this
> > and I want to give it a try if nobody objects.

Unless somebody sets their foot down and say we really don't want to
do this I was going to introduce a dependency on this, plus a few
other modules, when doing my refactoring of svg2png.

> What exactly is it that perl::Error gives us? One thing that strikes
> me as insufficient currently, is that a CTRL-C in inskscape (or or/p)
> will hand back jobs as "BadSVG" or "RenderFailure", which is very
> misleading. But I think we are able to capture those exceptions with
> perl standard means, perhaps others no more about that. It would be
> great if we could hand back a job as "UserAborted" rather than
> misleading error messages.

Error.pm gives perl proper exception handling, in a much cleaner way
than eval{}.

I think we could catch SIGINT with a handler that throws an exception
that could then be catched and reported to the server as UserAborted.

-- 
Knut Arne Bjørndal
aka Bob Kåre
bob+osm at cakebox.net
bobkare at irc
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