Re: clean/smudge filters for pdf files

From: Pierre Habouzit <madcoder@debian.org>
Date: Oct 23, 2008, 21:32 UTC
Message-ID: <20081023213203.GB26104@artemis.corp>
In-Reply-To: <ee2a733e0810231244u1510cdc8y7b27af9b8fdda1e0@mail.gmail.com>

On Thu, Oct 23, 2008 at 07:44:39PM +0000, Leo Razoumov wrote:

Show 19 quoted lines

> I am trying to improve storage efficiency for PDF files in a git repo.
> Following earlier discussions in this list I am trying to set up
> proper clean/smudge filters. What follows is my current setup
> 
> # in ~/.gitconfig
> [filter "pdf"]
> 	clean  = "pdftk - output - uncompress"
> 	smudge = "pdftk - output - compress"
> 
> # in .gitattributes
> *.pdf filter=pdf
> 
> Unfortunately, it seems as though that pdftk uncompress followed by
> pdftk compress do not leave the file invariant. I tried several
> uncompress+compress iterations and the file still keep changing (the
> size though stays the same).
> Is there any other alternative way to store PDF files in git repo more
> efficiently?
> Any alternative to pdftk on Linux?

actually it uses some kind of zlib algorithm so that's pretty normal you don't have the same result with a packer. Maybe one could write a tool like pristine-tar for that purpose.

-- 
·O·  Pierre Habouzit
··O                                                madcoder@debian.org
OOO                                                http://www.madism.org