'file:' access according to AuthzSVNAccessFile

Hello,

I have some Subversion repositories on Linux accessed through https,
controlled by an AuthzSVNAccessFile svn-access.conf, with Apache doing
the authentication. The web interface is XML+XSLT->HTML, so on a
particular directory, I can add extra utility links based on whichever
SVN directory is being accessed.

I'd like to add a link that produces a .tgz of the displayed directory —
it has been suggested that this might be useful for people who are a
bit, um, scared of Subversion, but nevertheless have read access to the
repository.

The script would just do an 'svn export' and a 'tar'. But I can't see
an easy way of getting the export call to check that the user (already
authenticated as $REMOTE_USER) has permissions for the directory, or
correspondingly to avoid checking out unreadable subdirectories. A
command like this would be ideal:

svn export --username $REMOTE_USER --authz svn-access.conf file:///...

Is there some straight-forward equivalent of this? If not, is it a
feature worth requesting?

Thanks,

Steven

-- 
ss at comp dot lancs dot ac dot uk                                     |
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