Serverside Scripting

Hi,
 Can anyone please tell me if Subversion supports server side scripting ?

 My requirements are

*) if a source file has variables like $Revision $Author that should get
replaced with commit version and author name. Something similar to what CVS
supports

*) Assuming my developers are responsible and provide good logging
information on every commit, I would like to consolidate for easy reference.

Essentially on server side, on every commit, I would like to update one or
more files in repository with current commit version, log text info etc.

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thanks
chinmaya swaroop