zulip/tools/clean-branches

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#!/usr/bin/env bash
set -e
# usage: clean-branches
# Deletes any local branches which are ancestors of origin/main,
# and also any branches in origin which are ancestors of
# origin/main and are named like $USER-*.
# usage: clean-branches --reviews
# Deletes all the above mentioned branches as well as branches
# created by the scripts like `fetch-rebase-pull-request`. Be careful
# as this would also remove other branches with names like review-*
review=0
if [ $# -ne 0 ] && [ "$1" == "--reviews" ]; then
review=1
fi
push_args=()
function is_merged() {
! git rev-list -n 1 origin/main.."$1" | grep -q .
}
function clean_ref() {
ref="$1"
case "$ref" in
*/main | */HEAD)
return
;;
refs/heads/review-*)
if [ $review -ne 0 ]; then
echo -n "Deleting local branch ${ref#refs/heads/}"
echo " (was $(git rev-parse --short "$ref"))"
git update-ref -d "$ref"
fi
;;
refs/heads/*)
if is_merged "$ref"; then
echo -n "Deleting local branch ${ref#refs/heads/}"
echo " (was $(git rev-parse --short "$ref"))"
git update-ref -d "$ref"
fi
;;
refs/remotes/origin/$USER-*)
if is_merged "$ref"; then
remote_name="${ref#refs/remotes/origin/}"
echo -n "Deleting remote branch $remote_name"
echo " (was $(git rev-parse --short "$ref"))"
# NB: this won't handle spaces in ref names
push_args=("${push_args[@]}" ":$remote_name")
fi
;;
esac
}
if [ "$(git symbolic-ref HEAD)" != 'refs/heads/main' ]; then
echo "Check out main before you run this script." >&2
exit 1
fi
git fetch --prune origin
eval "$(git for-each-ref --shell --format='clean_ref %(refname);')"
if [ "${#push_args}" -ne 0 ]; then
git push origin "${push_args[@]}"
fi