git-archive for files changed in revision range

Hiya,

We have a small project that is being managed in a Git repository (MSysGit to be exact) - mostly for backups and so on. The project is a mod for the computer game Civilization 4. (Actually a mod of a mod, but still...) As such, to release the mod to other people to actually use the only thing that needs to be released is all of the files that have actually been changed. (The actual git repository contains ~700MB of files, the vast majority of which haven't changed since the initial import and so don't need to be downloaded by people).

I've managed to make it produce an archive that contains only the files that have changed by using a combination of git-archive and git-whatchanged, along with grep and sed, but it's kinda unwieldly. Is there a better way of doing this?

The command line I used was something like (This is mostly from memory):
git-archive --format=zip . `git-whatchanged <start>..HEAD --pretty=oneline 
  | grep '^:' | sed 's/^.*\t//'` > release.zip

To produce a zip containing all of the modified and added files for the revision range <start>..HEAD.

Hi,

On Wed, 13 Feb 2008, Graham Cox wrote:

Mebbe

	git archive --format=zip HEAD \
		$(git diff-tree -r --name-only --diff-filter=AM \
			<start>..HEAD)

Hmm?

Ciao, Dscho

On Wed, Feb 13, 2008 at 01:03:04PM +0000, Graham Cox wrote:

That will list files multiple times if they were modified in more than one commit. And really, there's no need to walk the history. You really are just comparing against two points (your baseline and your current state). Walking the history will also erroneously include files which changed, but then reverted back to their original state (though I expect that is the uncommon case).

How about:

  # mark our start point for this and future releases
  git tag baseline `git rev-list HEAD | tail -n 1`

  # find files which differ between then and now; but we only need
  # to care about added and modified files, since deleted ones
  # don't need to be shipped
  git diff --diff-filter=AM --raw baseline HEAD | awk '{print $6}' >files

  # and archive
  git archive --format=zip HEAD `cat files`

You can even use diff's "-z" option if you have filenames that are hard to quote, but I will leave that as an exercise to the reader.

-Peff

Graham Cox schrieb:

git diff-tree -r --name-only -z <start> HEAD | \
    xargs -0 git archive --format=zip HEAD > release.zip

-- Hannes