How do I keep an svn:external up to date using git-svn?

Question

Treating my repository as a SVN repo, I get:

svn co http://myrepo/foo/trunk foo
...
foo/
  bar/
  baz/ -> http://myrepo/baz/trunk

Treati

Answer 1

I just wrote a short script which checkouts all svn:externals of the current HEAD to the root directory and excludes them from the git repository.

Place it to .git/hooks/post-checkout and it will keep those external checkouts up to date whenever the working tree changes, for example due to git svn rebase or git-checkout.

#!/bin/bash
set -eu

revision=$(git svn info | sed -n 's/^Revision: \([1-9][0-9]*\)$/\1/p')
git svn -r${revision} propget svn:externals | head -n-1 | {
    while read checkout_args
    do
        checkout_dirname=$(echo ${checkout_args} | cut -d' ' -f3)
        svn checkout ${checkout_args}
        if [ -z $(grep ${checkout_dirname} .git/info/exclude) ]
        then
            echo ${checkout_dirname} >> .git/info/exclude
        fi
    done
}