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#!/bin/sh
# this is a wee bit expensive in terms of forks etc., compared to doing it in
# perl, but I wanted to show how *easy* it actually is now. And really,
# you'll only notice if you access this repo like a hundred times a minute or
# something so don't sweat it.
# given a repo and a user, check if option('partialCopyOf') is set, and if so,
# fetch all allowed branches from there.
die() { echo "$@" >&2; exit 1; }
# make sure we're being called from the pre_git trigger
[ "$1" = "PRE_GIT" ] || die I must be called from PRE_GIT, not "$1"
shift
repo=$1
user=$2
main=`git config --file $GL_REPO_BASE/$repo.git/config --get gitolite.partialCopyOf`;
[ -z "$main" ] && exit 0
# "we", "our repo" => the partial copy
# "main", "pco" => the one which we are a "partial copy of"
cd $GL_REPO_BASE/$main.git
for ref in `git for-each-ref refs/heads '--format=%(refname)'`
do
cd $GL_REPO_BASE/$repo.git
gitolite access -q $repo $user R $ref &&
git fetch -f $GL_REPO_BASE/$main.git $ref:$ref
done
export GL_BYPASS_ACCESS_CHECKS=1
# remove all refs not in main or accessible
cd $GL_REPO_BASE/$repo.git
for ref in `git for-each-ref refs/heads refs/tags '--format=%(refname)'`
do
cd $GL_REPO_BASE/$main.git
if git show-ref --verify --quiet $ref &&
gitolite access -q $repo $user R $ref ; then
# ref is present in main and accessible in repo
continue
fi
git push -f $GL_REPO_BASE/$repo.git :$ref || die "FATAL: failed to delete $ref"
done
# remove all tags no longer reachable
cd $GL_REPO_BASE/$repo.git
for ref in `git for-each-ref refs/tags '--format=%(refname)'`
do
SHA=`git rev-list -1 $ref`
for branch in `git for-each-ref refs/heads '--format=%(refname)'`
do
if [ "`git merge-base $SHA $branch`" = "$SHA" ]; then
# tag is reachable in current branch, continue higher loop
continue 2
fi
done
git push -f $GL_REPO_BASE/$repo.git :$ref || die "FATAL: failed to delete $ref"
done
exit 0
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