fancy git prompt

function git_prompt {
  branch=`git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/\1/"`
  if [ -n "$branch" ]; then
    case `git status 2> /dev/null | tail -n1` in
      "nothing to commit (working directory clean)")
        color="01;33m";;
      "nothing added to commit but untracked files present (use \"git add\" to track)")
        color="01;35m";;
      *)
        color="01;31m";;
    esac
    branch="\033[$color$branch\033[00m"
    echo -e " [$branch]"
  fi;
}
PS1="\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$(git_prompt)\$ "