subversion log conventions (from svnlook log)

Dear developers of the the all so mighty subversion

I'm currenty writing a perl script for parsing the log msgs of our
repository and to plot some nice graphics about the repo usage and user
behaviour.

To do so, I decided to parse the log messages from svnlook log <path> -r
<revnum> which did work quite well. But ti seems that Subversion is used
to announce file deletions before file copies. So it is usual, that a
file /root/x.pm gets deleted first and then copied to a different place
(read from top to buttom) directly afterwards.
Since I internaly try to keep track of all file changes
(addition,copy,deletion) my program gets disrubted by this action. To
correct this is no big deal but I stated looking for a log
standardisation documentation on the web and found nothing to learn
about other such habits of subversion.

Is there somewhere a documentation on how subversion writes these logs?

Thank you very much for any tips.
cheers,
Patrick

-- 
Patrick Boenzli             |The wheel is turning, but the hamster is dead.
OrxonoX 3D Shooter          |-- From a real employee performance evaluation.
boenzlip_at_orxonox.ethz.ch    |http://www.orxonox.ethz.ch