git-commit-vandalism/contrib
David Barr 7a75e661c5 vcs-svn: implement text-delta handling
Handle input in Subversion's dumpfile format, version 3.  This is the
format produced by "svnrdump dump" and "svnadmin dump --deltas", and
the main difference between v3 dumpfiles and the dumpfiles already
handled is that these can include nodes whose properties and text are
expressed relative to some other node.

To handle such nodes, we find which node the text and properties are
based on, handle its property changes, use the cat-blob command to
request the basis blob from the fast-import backend, use the
svndiff0_apply() helper to apply the text delta on the fly, writing
output to a temporary file, and then measure that postimage file's
length and write its content to the fast-import stream.

The temporary postimage file is shared between delta-using nodes to
avoid some file system overhead.

The svn-fe interface needs to be more complicated to accomodate the
backward flow of information from the fast-import backend to svn-fe.
The backflow fd is not needed when parsing streams without deltas,
though, so existing scripts using svn-fe on v2 dumps should
continue to work.

NEEDSWORK: generalize interface so caller sets the backflow fd, close
temporary file before exiting

Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
2011-05-26 02:28:04 -05:00
..
blameview War on whitespace 2007-06-07 00:04:01 -07:00
buildsystems msvc: Fix an "unrecognized option" linker warning 2010-01-22 16:15:14 -08:00
ciabot contrib/ciabot: git-describe commit instead of HEAD 2010-10-29 14:09:48 -07:00
completion Merge branch 'mg/rev-list-n-parents' 2011-03-26 20:13:17 -07:00
continuous contrib/continuous: a continuous integration build manager 2007-03-19 22:21:19 -07:00
convert-objects Fix a bunch of pointer declarations (codestyle) 2009-05-01 15:17:31 -07:00
emacs git.el: Don't use font-lock-compile-keywords 2011-04-03 11:08:54 -07:00
examples cherry-pick/revert: add support for -X/--strategy-option 2010-12-28 11:27:56 -08:00
fast-import git-p4: replace each tab with 8 spaces for consistency 2011-04-07 00:37:45 -07:00
git-shell-commands Add sample commands for git-shell 2010-08-12 15:16:31 -07:00
gitview gitview: import only one of gtksourceview and gtksourceview2 2007-11-19 23:24:34 -08:00
hg-to-git Correct references to /usr/bin/python which does not exist on FreeBSD 2010-03-24 14:33:54 -07:00
hooks post-receive-email: suppress error if description file missing 2011-02-07 14:28:21 -08:00
p4import Correct references to /usr/bin/python which does not exist on FreeBSD 2010-03-24 14:33:54 -07:00
patches INSTALL: add warning on docbook-xsl 1.72 and 1.73 2007-08-04 01:55:08 -07:00
stats contrib: update packinfo.pl to not use dashed commands 2008-10-18 06:20:27 -07:00
svn-fe vcs-svn: implement text-delta handling 2011-05-26 02:28:04 -05:00
thunderbird-patch-inline contrib/thunderbird-patch-inline: do not require bash to run the script 2011-03-30 12:29:39 -07:00
vim contrib/vim: change URL to point to the latest syntax files 2009-01-12 23:36:03 -08:00
workdir prefer test -h over test -L in shell scripts 2010-09-27 10:48:23 -07:00
git-resurrect.sh request-pull: protect against OPTIONS_KEEPDASHDASH from environment 2010-05-01 11:02:21 -07:00
README War on whitespace 2007-06-07 00:04:01 -07:00
remotes2config.sh contrib: Make remotes2config.sh script more robust 2007-12-04 14:35:08 -08:00
rerere-train.sh Add contrib/rerere-train script 2008-09-29 09:15:41 -07:00

Contributed Software

Although these pieces are available as part of the official git
source tree, they are in somewhat different status.  The
intention is to keep interesting tools around git here, maybe
even experimental ones, to give users an easier access to them,
and to give tools wider exposure, so that they can be improved
faster.

I am not expecting to touch these myself that much.  As far as
my day-to-day operation is concerned, these subdirectories are
owned by their respective primary authors.  I am willing to help
if users of these components and the contrib/ subtree "owners"
have technical/design issues to resolve, but the initiative to
fix and/or enhance things _must_ be on the side of the subtree
owners.  IOW, I won't be actively looking for bugs and rooms for
enhancements in them as the git maintainer -- I may only do so
just as one of the users when I want to scratch my own itch.  If
you have patches to things in contrib/ area, the patch should be
first sent to the primary author, and then the primary author
should ack and forward it to me (git pull request is nicer).
This is the same way as how I have been treating gitk, and to a
lesser degree various foreign SCM interfaces, so you know the
drill.

I expect that things that start their life in the contrib/ area
to graduate out of contrib/ once they mature, either by becoming
projects on their own, or moving to the toplevel directory.  On
the other hand, I expect I'll be proposing removal of disused
and inactive ones from time to time.

If you have new things to add to this area, please first propose
it on the git mailing list, and after a list discussion proves
there are some general interests (it does not have to be a
list-wide consensus for a tool targeted to a relatively narrow
audience -- for example I do not work with projects whose
upstream is svn, so I have no use for git-svn myself, but it is
of general interest for people who need to interoperate with SVN
repositories in a way git-svn works better than git-svnimport),
submit a patch to create a subdirectory of contrib/ and put your
stuff there.

-jc