Git aware bash PS1

gistfile1.sh

c_cyan=`tput setaf 6`
c_red=`tput setaf 1`
c_green=`tput setaf 2`
c_sgr0=`tput sgr0`

parse_git_status() {
  local color=""
  if git rev-parse --git-dir >/dev/null 2>&1
  then

    if git diff --quiet 2>/dev/null >&2 
    then
            color="${c_green}"
    else
            color=${c_red}
    fi

    gitver=$(git branch 2>/dev/null| sed -n '/^\*/s/^\* //p')
    local num=$(git status --porcelain 2> /dev/null | wc -l)
    gitver="$color ($gitver, $num)$c_sgr0"
  else
    return 0
  fi
  echo $gitver
}

PS1='\w$(parse_git_status): '