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Re: Exporting with externals doesn't work

From: Joachim Durchholz <jo_at_durchholz.org>
Date: 2007-11-22 08:55:37 CET

Ryan Schmidt schrieb:
>> So how about *client-side* hook scripts? Have a parameter --hook-dir
>> for the SVN client. With a hook for checking whether a given file
>> should be exported at all, and a hook for munging the contents of a
>> file (possibly even before the file is written to disk: piping the
>> file contents to stdin of the hook script would suffice).
> Client-side hooks are not available, and probably never will be. There
> are about a zillion threads in the mailing list archives if you'd like
> to review them. Basically, it's a security issue to allow code that
> someone committed to the repository to be run on the client. Not to
> mention that it's very difficult to write a script that works properly
> on all possible client environments, given the poor scripting support
> built into Windows for example. And what you're asking for -- the
> ability to tell the repository what to send and not to send -- goes even
> further.

The scripts would live on the client side, of course. IOW selecting the
right set of hooks would have to be a command-line option of the client.

I think the real work would be adding a hook in the protocol. I.e. when
exporting, the SVN server would have to ask the client whether a
specific file is actually needed before sending it.

> Hey, actually, if that's all you want, couldn't you just ask the
> repository for a list of files first, and then only request the ones you
> actually want? You may have to dig into the APIs, like the Perl API for
> example, to do this optimally.

Hm... well, yes, that would be an option.
This is a PHP shop (urk), so I'd probably do an svn --xml list and parse
the output (PHP does come with an XML parser, so I'm lucky here).
... speaking of svn list, it doesn't work either. So for the moment, I'm
stuck with post-hoc file filtering. Not optimal, but I can live with that.

Thanks for all the help!


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Received on Thu Nov 22 08:55:17 2007

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