#!/usr/bin/env bash

# This script rebases the current branch on the current master. It does not
# pull upstream master beforehand. If you need a fresh master, use git-refresh.
#
# Syntax: git-rebase

. llvm-common

branch=`get_branch`
echo "Rebasing $branch"

if [[ `git diff | head -1` != '' ]]; then
  echo "You have uncommitted changes in your repo, bailing"
  echo "Please, stash your changes and run this script again"
  exit 2
fi

if [[ `git branch | grep $branch` = '' ]]; then
  echo "Branch $branch doesn't exist in this repository"
  exit 3
fi

if [[ "$branch" = "master" ]]; then
  echo "Can't rebase master"
  exit 4
fi

git rebase master
if [[ $? != 0 ]]; then
  echo "Rebase failed, aborting rebase..."
  safe_run git rebase --abort
  exit 1
fi