git + colors in bash

gistfile1.sh

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

parse_git_branch ()
{
  if git rev-parse --git-dir >/dev/null 2>&1
  then
          gitver=$(git branch 2>/dev/null| sed -n '/^\*/s/^\* //p')
  else
          return 0
  fi
  echo -e $gitver
}
 
branch_color ()
{
  if git rev-parse --git-dir >/dev/null 2>&1
  then
    color=""
    if git diff --quiet 2>/dev/null >&2 
    then
      color="${c_green}"
    else
      color=${c_red}
    fi
  else
    return 0
  fi
  echo -ne $color
}

export PS1='[\[$(branch_color)\]$(parse_git_branch)\[${c_sgr0}\]] \u@\[${c_red}\]\w\[${c_sgr0}\]: '

alias be='bundle exec'

function chef-shell() {
  default_role=webapp
  default_env=production
  role=${1:-$default_role}
  env=${2:-$default_env}
  echo "role:$role"
  echo "environment:$env"
  cd ~/projects/handwire/chef-repo
  knife ssh -E $env -a ipaddress "chef_environment:$env  AND role:$role" interactive 
}