Re: [viewvc-dev] Re: Using rcsparse for filtering *,v files?

Michael Haggerty wrote:
> Michael Haggerty wrote:
>> As some of you certainly know, we use rcsparse in the cvs2svn project
>> (http://cvs2svn.tigris.org).  I have a question about another idea that
>> I have for using rcsparse in that project.
>>
>> I'm currently working on scripts that allow users to expurgate sensitive
>> information from their CVS repositories so that they can easily create
>> test cases for cvs2svn bugs even if the original repository contained
>> proprietary information.  Some things are easy to strip out, but to
>> eliminate (for example) author names, a more sophisticated technique is
>> required.
>>
>> So I was thinking of using rcsparse to read the RCS file, munging it on
>> the way through, then outputting a new RCS file to disk.
>>
>> Does anybody know how difficult this would be to do?  Is enough
>> information available from the rcsparse Sink interface to recreate a
>> file 1:1 (or nearly 1:1)?  Is there an example Sink that simply
>> regenerates the contents of the original *,v file?
>>
>> If such a 1:1 Sink were available, it would be easy to use it as a
>> starting point to build a filter that makes arbitrary modifications.
>>
>> Any comments or pointers?
> 
> It turns out that this wasn't so hard, so I did it myself.  The result
> is the class WriteRCSFileSink, which can be seen at
> 
> http://cvs2svn.tigris.org/svn/cvs2svn/trunk/contrib/rcs_file_filter.py
> 
> (This version uses cvs2svn's copy of rcsparse.  If you want to try it
> out in place, then check out
> 
> http://cvs2svn.tigris.org/svn/cvs2svn/trunk
> 
> .)
> 
> It might make sense to including a file like this in your project rather
> than in cvs2svn (as a demonstration of working with rcsparse).  If you
> would be interested, please let me know.
> 
> Michael

[I can't recall if I ever replied to this, so...]

I agree that it makes sense to put this into our rcsparse module.  If you
find time to do so, +1.

-- 
C. Michael Pilato <[email protected]>
CollabNet   <>   www.collab.net   <>   Distributed Development On Demand

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