MyBash/ps1.rc.sh

# define symbols
declare -A symbols=(
    [hard_separator]="▶"
    [soft_separator]="|"
    [git]=""
    [lock]=""
    [flag]="⚑"
    [plus]="✚"
    [tick]="✔"
    [cross]="✘"
    [enter]="⏎"
    [python]="λ"
    [battery_charging]="⚡"
    [battery_discharging]="▮"
    [untracked]="U"
    [stash]="🐿"
    [ahead]="+"
    [behind]="-"
    [smilie]="☺"
    [frownie]="☹"
)


# This function was modified from one found @ https://www.reddit.com/r/linux/comments/2uf5uu/this_is_my_bash_prompt_which_is_your_favorite/?st=jikgswh4&sh=371ba8bf
function _git_status() {
  local unknown untracked stash clean ahead behind staged dirty diverged
  unknown=$(_CC $BLUE $BG_DGREY)
  untracked=$(_CC $GREEN $BG_DGREY)
  stash=$(_CC $GREEN $BG_DGREY)
  clean=$(_CC $GREEN $BG_DGREY)
  ahead=$(_CC $YELLOW $BG_DGREY)
  behind=$(_CC $YELLOW $BG_DGREY)
  staged=$(_CC $CYAN $BG_DGREY)
  dirty=$(_CC $RED $BG_DGREY)
  diverged=$(_CC $RED $BG_DGREY)


  branch=$(git rev-parse --abbrev-ref HEAD 2>/dev/null)
  if [[ -n "$branch" ]]; then
    git_status=$(git status 2> /dev/null)
    # If nothing changes the color, we can spot unhandled cases.
    color=$unknown
    if [[ $git_status =~ 'Untracked files' ]]; then
      color=$untracked
      branch="${branch}?"
    fi
    if git stash show &>/dev/null; then
      color=$stash
      branch="${branch}+"
    fi
    if [[ $git_status =~ 'working directory clean' ]]; then
      color=$clean
    fi
    if [[ $git_status =~ 'Your branch is ahead' ]]; then
      color=$ahead
      branch="${branch}>"
    fi
    if [[ $git_status =~ 'Your branch is behind' ]]; then
      color=$behind
      branch="${branch}<"
    fi
    if [[ $git_status =~ 'Changes to be committed' ]]; then
      color=$staged
    fi
    if [[ $git_status =~ 'Changed but not updated' ||
          $git_status =~ 'Changes not staged'      ||
          $git_status =~ 'Unmerged paths' ]]; then
      color=$dirty
    fi
    if [[ $git_status =~ 'Your branch'.+diverged ]]; then
      color=$diverged
      branch="${branch}!"
    fi
    echo -n "${color}${symbols[git]}${branch}"
  fi
}


set_prompt() {
  local lec="$?"
  if [ $COLOR_PROMPT = yes ]; then
    if [ $lec -ne 0 ]; then
      smilie="$(_CC $RED $BG_DGREY)${symbols[frownie]}"
    else
      smilie="$(_CC $GREEN $BG_DGREY)${symbols[smilie]}"
    fi
    PS1="${debian_chroot:+($debian_chroot)}$(_CC $GREEN $BG_DGREY)\u $(_CC $LBLUE $BG_DGREY)\w$(_CC $DEFAULT $BG_DGREY)|${smilie}$(_CC $DEFAULT $BG_DGREY)|$(_git_status)${NORMAL}$(_CFG $DGREY)${symbols[hard_separator]}${NORMAL} "
  else
    PS1="${debian_chroot:+($debian_chroot)}\u@\h:\w\$ "
  fi
}

PROMPT_COMMAND="set_prompt"