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Re: NTCVS to Subversion conversion tool

From: Trevor Schaffer <TrevorSchaffer_at_smarttech.com>
Date: Thu, 17 Jan 2008 12:40:42 -0700

Assuming you want all revision history, this might help. If you don't want revision history, then all of this is a moot point.

I’ve done this on some very large repositories, and it can be done, if you take great care (or keep trying it until it works)

The cvs2svn script works for CVSNT for 95% of what you need to do. The only parts that might fail are if you save files as Unicode. CVSNT fakes Unicode by saving the file as UTF-8, and expands it during update/checkout. This can be "fixed" by changing the CVS files to mark these Unicode files as binary files, then convert them later.

Flags to look for in CVS files:
"kopts u" and "expands u"
- These specify the file as Unicode, which cvs/rcs doesn't support. This line can be removed from the *,v file, but remember to keep the file name in a list so you know which files to convert back to UTF16 if needed once the conversion to svn is done.
Another thing that you will NEED to do is set appropriate svn:mime-type and svn:eol-styles. In the case where someone checks a binary file into CVS as non-binary, the svn import will treat the file as text and corrupt the file with modified newline characters. This might not always work (it was nearly a year ago when I did it, so my memory is a little fuzzy on this detail).

Finally, since cvs2svn takes the entire revision history, if there are any files in the repository that are corrupt at only certain revisions (which CVSNT has been known to do... a lot), you may have to either "massage" the *,v file to make the revision clean, or remove that file completely, and check it back in manually.

Just ensure that if you get the cvs2svn script to go through successfully, do a full checkout of the branches that you need to work on, and do a full recursive diff of the same revision on CVS to ensure that the data is in fact the same, then fix the files that didn't make it.

> Feed: Subversion-users Mailing List Threads
> Posted on: Thursday, January 17, 2008 10:55 AM
> Author: Subversion-users Mailing List Threads
> Subject: NTCVS to Subversion conversion tool

> Can anyone send me a link or more information about a conversion utility for converting out of NTCVS and > into Subversion? If a utility does not exist, has anyone done this before? If so, how much of a bear was > it to do the conversion? Thanks ...
Received on 2008-01-17 22:50:29 CET

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