Thanks. Ben. It is really helpful.
Bo On Friday, February 15, 2013, Ben Reser <b...@reser.org> wrote: > On Fri, Feb 15, 2013 at 9:20 AM, Bo Chen <bo.irvine.c...@gmail.com> wrote: >> Hi, can anyone help me a little bit for these questions: How does SVN work >> when recovering to a desired copy, specifically, how EXACTLY SVN does by >> combining the delta to reconstruct a desired file version.In CVS, they >> record the delta (for text file), as well as the update information like in >> which lines we have an insertion/deletion. However, in SVN, do we keep this >> information? Otherwise, how can we restore a desired file version. For >> example, I create one file, and make one simple insertion (insert a >> character). The following shows the file versions and the corresponding >> delta information in the repository. Can anyone tell me how exactly can I >> restore the second file version by the fist file version and the delta file >> for the second file version? I appreciate very much for your help. > > The deltas are stored in svndiff format. The documentation of the > format is stored here: > https://svn.apache.org/repos/asf/subversion/trunk/notes/svndiff > > You may find the fsfsverify.py tool handy in understanding the data > stored in the rev files. For example the following command will show > you the windows and instructions in the svndiff data: > fsfsverify.py -i $REPO/db/revs2 > > You can find fsfsverify.py here: > https://svn.apache.org/repos/asf/subversion/trunk/contrib/server-side/fsfsverify.py >
