Marlin/buildroot/share/git/mfup
2017-07-04 17:38:45 -05:00

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#!/usr/bin/env bash
#
# mfup
#
# - Fetch latest upstream and replace the PR Target branch with
# - Rebase the (current or specified) branch on the PR Target
# - Force-push the branch to 'origin'
# -
#
[[ $# < 2 ]] || { echo "Usage: `basename $0` [branch]" 1>&2 ; exit 1; }
MFINFO=$(mfinfo "$@") || exit 1
IFS=' ' read -a INFO <<< "$MFINFO"
ORG=${INFO[0]}
FORK=${INFO[1]}
REPO=${INFO[2]}
TARG=${INFO[3]}
BRANCH=${INFO[4]}
OLDBRANCH=${INFO[5]}
set -e
# Prevent accidental loss of current changes
[[ $(git stash) != "No local "* ]] && HAS_STASH=1
echo "Fetching upstream ($ORG/$REPO)..."
git fetch upstream
echo ; echo "Bringing $TARG up to date..."
if [[ ! $(git checkout -q $TARG) ]]; then
git reset --hard upstream/$TARG
git push -f origin
else
git checkout upstream/$TARG -b $TARG
git push --set-upstream origin $TARG
fi
if [[ $BRANCH != $TARG ]]; then
echo ; echo "Rebasing $BRANCH on $TARG..."
if git checkout $BRANCH; then
echo
if git rebase $TARG; then
git push -f
else
echo "Looks like merge conflicts. Stopping here." ; exit
fi
else
echo "No such branch!"
fi
fi
echo
[[ $BRANCH != $OLDBRANCH ]] && git checkout $OLDBRANCH
[[ $HAS_STASH == 1 ]] && git stash pop