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g backport: add a subcommand to easily backport all commits of a PR

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Signed-off-by: Miklos Vajna <vmiklos@collabora.com>
Change-Id: Ie48782075d7ebed245577ae1c0db63bc557fa57a
This commit is contained in:
Miklos Vajna 2020-11-26 15:32:19 +01:00
parent e6a54cf5cb
commit 947781ddd6
1 changed files with 84 additions and 14 deletions
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@ -9,22 +9,28 @@
# 4) "name" is the name of part of the private/user/name remote branch, defaults to the current
# branch. You have to specify this explicitly if you want to update an existing PR.
#
# './g backport <branch> <PR number> [name]' to submit a pull request for a different branch:
# 1) Checks out a local branch for the remote <branch>.
# 2) Cherry-picks commits from <PR number>
# 3) Uses './g review' to submit a pull request against <branch>.
#
if [ -z "$(type -p gh)" ]; then
echo "'gh' not found, install it from <https://github.com/cli/cli/blob/trunk/docs/install_linux.md>."
exit 1
fi
if ! gh auth status &>/dev/null; then
echo "'gh' thinks you are not logged into any GitHub hosts. Run 'gh auth login' to authenticate."
exit 1
fi
# e.g. co-4-2
BRANCH=$(git symbolic-ref HEAD|sed 's|refs/heads/||')
# e.g. origin
REMOTE=$(git config branch.$BRANCH.remote)
if [ "$1" == "review" ]; then
if [ -z "$(type -p gh)" ]; then
echo "'gh' not found, install it from <https://github.com/cli/cli/blob/trunk/docs/install_linux.md>."
exit 1
fi
if ! gh auth status &>/dev/null; then
echo "'gh' thinks you are not logged into any GitHub hosts. Run 'gh auth login' to authenticate."
exit 1
fi
# e.g. co-4-2
BRANCH=$(git symbolic-ref HEAD|sed 's|refs/heads/||')
# e.g. origin
REMOTE=$(git config branch.$BRANCH.remote)
# e.g. distro/collabora/co-4-2
TRACKED_BRANCH=$(git rev-parse --abbrev-ref --symbolic-full-name HEAD@{upstream}|sed "s|${REMOTE}/||")
REMOTE_BRANCH=private/$USER/$TRACKED_BRANCH
@ -58,6 +64,70 @@ if [ "$1" == "review" ]; then
exit 0
fi
if [ "$1" == "backport" ]; then
if [ -z "$(type -p jq)" ]; then
echo "'jq' not found, install it with your package manager."
exit 1
fi
BACKPORT_BRANCH=$2
if [ -z "$BACKPORT_BRANCH" ]; then
echo "Error: backport branch is not specified"
echo "Usage: './g backport <branch> <PR number> [name]'"
echo "Example: './g backport distro/collabora/co-6-4 42'"
exit 1
fi
if ! git rev-parse --quiet --verify $REMOTE/$BACKPORT_BRANCH >/dev/null; then
echo "Error: backport branch does not exist"
exit 1
fi
PRNUM=$3
if [ -z "$PRNUM" ]; then
echo "Error: PR number is not specified"
exit 1
fi
# Optional.
CUSTOM_BRANCH=$4
JSON=$(mktemp)
gh api graphql -f query='
{
repository(owner: "CollaboraOnline", name:"online")
{
pullRequest(number: '$PRNUM'){
baseRefOid
headRefOid
}
}
}' > $JSON
BASE_COMMIT=$(cat $JSON | jq --raw-output ".data.repository.pullRequest.baseRefOid")
HEAD_COMMIT=$(cat $JSON | jq --raw-output ".data.repository.pullRequest.headRefOid")
COMMIT_RANGE=$BASE_COMMIT..$HEAD_COMMIT
# Create local branch if needed.
BRANCH_CREATED=
if git rev-parse --quiet --verify master2 >/dev/null; then
git checkout $BACKPORT_BRANCH
else
git checkout --track $REMOTE/$BACKPORT_BRANCH
BRANCH_CREATED=y
fi
git cherry-pick $COMMIT_RANGE
$0 review $CUSTOM_BRANCH
git checkout $BRANCH
if [ -n "$BRANCH_CREATED" ]; then
git branch -D $BACKPORT_BRANCH
fi
exit 0
fi
if [ "$1" == "pull" ]; then
shift
git pull "$@"