GitPush with checking for updates

git_push

function gpush () {
  # Check if we need to pull before pushing
  LOCAL=$(git rev-parse @)
  REMOTE=$(git rev-parse @{u})
  BASE=$(git merge-base @ @{u})

  stop=0

  if [ $LOCAL = $REMOTE ]; then
      echo "Up-to-date"
  elif [ $LOCAL = $BASE ]; then
      echo "Need to pull. Push aborted."
      stop=1
  elif [ $REMOTE = $BASE ]; then
      echo "Need to push"
  else
      echo "Diverged"
  fi

  # Pushing
  if [ $stop -eq 0 ]; then
    git push
  fi
  
}