git-up

#!/bin/sh
BRANCH=`git branch-name`
[ -z "$BRANCH" ] && exit 1

UPSTREAM=upstream
git remote -v | cut -f1 | grep -q \^"$UPSTREAM"\$ || UPSTREAM=origin

remote_branch=master
git branch -r | awk '{ print $1 }' | grep -q '^'"$UPSTREAM"'/master$' || remote_branch=main
git branch -r | awk '{ print $1 }' | grep -q '^'"$UPSTREAM"'/devel$' && remote_branch=devel

master=false
case $BRANCH in
  master)
    remote_branch=master
    master=true
    ;;
  main)
    remote_branch=main
    master=true
  ;;
  devel)
    remote_branch=devel
    master=true
    ;;
  feature/*)
    remote_branch=$BRANCH
    master=true
    ;;
  stable-*)
    remote_branch=$BRANCH
    master=true
    ;;
esac

ZSTREAMS="4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10"
for release in $ZSTREAMS; do
  if pwd | grep -q ansible-hub-ui-$release; then
    remote_branch=stable-$release
  fi
  if pwd | grep -q galaxy_ng-$release; then
    remote_branch=stable-$release
  fi
done

echo "git-up: Fetching from $UPSTREAM/$remote_branch" 1>&2
if $master; then
  git fetch "$UPSTREAM"
  git merge --ff-only "$UPSTREAM"/"$remote_branch"
else
  git fetch "$UPSTREAM" "$remote_branch"

  branch="master"
  git branch | awk '{ print $1 }' | grep -q '^master$' || branch=main
  git branch | awk '{ print $1 }' | grep -q '^devel$' && branch=devel
  echo "git-up: Updating $branch, not $BRANCH" 1>&2

  while ! [ -d .git ]; do
    cd ..
  done

  diff -Naur .git/refs/heads/"$branch" .git/refs/remotes/"$UPSTREAM"/"$remote_branch"
  cp .git/refs/remotes/"$UPSTREAM"/"$remote_branch" .git/refs/heads/"$branch"
fi