git helper script for managing local branch proliferation

git-purge

#!/bin/sh

set -e

delete_branch() {
  git branch -d "$1"
}

usage() {
  echo "git purge [-d|--delete] [-e|--regex <regular_expression>]"
  echo ""
  echo "Deletes local branches with remotes which have been merged to master."
  echo ""
  echo "--delete  Delete all dead branches"
  echo "--regex   Change the regex used to select branched."
  echo ""
  echo "NOTE: git purge will not delete the master branch."
}

kept_branches="v0\.*"
do_delete=0

while [ "$1" != "" ];
do
  case $1 in
    "-d")
      do_delete=1
      ;;
    "--delete")
      do_delete=1
      ;;
    "-e")
      kept_branches="$2"
      shift
      ;;
    "--regex")
      kept_branches="$2"
      shift
      ;;
    "-h")
      usage
      exit 0
      ;;
    "--help")
      usage
      exit 0
      ;;
    *)
      usage
      exit 1
  esac
  shift
done

branches=`git branch --merged | grep -v -E "master|^\*|$kept_branches" | sort`
for branch in $branches
do
  if [ "$do_delete" == "1" ]; then
    delete_branch $branch
  else
    echo "Dead: $branch"
  fi
done