bash config file to show git branch

bash_prompt

# My bash_prompt file to do the following:
# - don't show current path
# - show current branch and branch status if in a git repository
#
# Original taken from:
# http://git.dreaminginlyrics.com/?p=configs.git;a=blob_plain;f=.bash_prompt;hb=HEAD
#
# I added:
# - prompt_git_open_bracket
# - prompt_git_close_bracket
#
# I modified PS1 to do the following:
# - NOT show history line number
# - NOT show current path
# - place brackets around current git branch if in git repository
#
# Included in terminal via .bashrc:
# - '. ~/.bash_prompt' placed at bottom of .bashrc

prompt_username_color() {
  if [ "$(id -u)" == "0" ]; then
    echo -e "\033[1;31m"
  else
    echo -e "\033[1;32m"
  fi
}

prompt_hostname_color() {
  if [[ ${SSH_CLIENT} ]] || [[ ${SSH2_CLIENT} ]]; then 
    echo -e "\033[1;35m"
  else
    echo -e "\033[1;34m"
  fi
}

prompt_git_branch_color() {
  if type -p __git_ps1; then
    branch=$(__git_ps1 '%s')
    if [ -n "$branch" ]; then
      status=$(git status 2> /dev/null)

      if $(echo $status | grep 'added to commit' &> /dev/null); then
        # If we have modified files but no index (blue)
        echo -e "\033[1;34m"
      else
        if $(echo $status | grep 'to be committed' &> /dev/null); then
          # If we have files in index (red)
          echo -e "\033[1;31m"
        else
          # If we are completely clean (green)
          echo -e "\033[1;32m"
        fi
      fi
    fi
  fi
}

prompt_git_branch() {
  if type -p __git_ps1; then
    branch=$(__git_ps1 '%s')
    if [ -n "$branch" ]; then
      echo -e "$branch"
    fi
  fi
}

prompt_git_label() {
  if type -p __git_ps1; then
    branch=$(__git_ps1 '%s')
    if [ -n "$branch" ]; then
      echo -e " git:"
    fi
  fi
}

prompt_git_open_bracket() {
  if type -p __git_ps1; then
    branch=$(__git_ps1 '%s')
    if [ -n "$branch" ]; then
      echo -e "["
    fi
  fi
}

prompt_git_close_bracket() {
  if type -p __git_ps1; then
    branch=$(__git_ps1 '%s')
    if [ -n "$branch" ]; then
      echo -e "]"
    fi
  fi
}

# PS1="[\[\033[1;31m\]\!\[\033[0m\]]\[\$(prompt_username_color)\]\u\[\033[0m\]@\[\$(prompt_hostname_color)\]\h\[\033[0m\]:\w\$(prompt_git_label)\[\$(prompt_git_branch_color)\]\$(prompt_git_branch)\[\033[1;35m\]\$\[\033[0m\] "

PS1="$(prompt_username_color)\u\[\033[0m\]@\[\$(prompt_hostname_color)\]\h\[\033[0m\] \$(prompt_git_open_bracket)\[\$(prompt_git_branch_color)\]\$(prompt_git_branch)\[\033[0m\]\$(prompt_git_close_bracket)\[\033[1;35m\]\$\[\033[0m\] "