prompt.sh

# set variable identifying the chroot you work in (used in the prompt below)
if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
    debian_chroot=$(cat /etc/debian_chroot)
fi

# set a fancy prompt (non-color, unless we know we "want" color)
case "$TERM" in
    xterm-color|*-256color) color_prompt=yes;;
esac

# uncomment for a colored prompt, if the terminal has the capability; turned
# off by default to not distract the user: the focus in a terminal window
# should be on the output of commands, not on the prompt
#force_color_prompt=yes
if [ -n "$force_color_prompt" ]; then
    if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
        # We have color support; assume it's compliant with Ecma-48
        # (ISO/IEC-6429). (Lack of such support is extremely rare, and such
        # a case would tend to support setf rather than setaf.)
        color_prompt=yes
    else
        color_prompt=
    fi
fi

__stopped_jobs() {
    local stopped_jobs
    stopped_jobs=$(jobs -s | cut -c31- | cut -d ' ' -f1 | tac | tr '\n' ' ' | sed 's/.$//')
    if [ -z "$stopped_jobs" ]; then
        return 1
    fi
    printf "$1 %s" "$stopped_jobs"
    return 0
}

if [ "$color_prompt" = yes ]; then

    _reset="\[\e[0m\]"

    if [ "$EUID" -eq 0 ]; then
        # purple theme
        _l="\[\e[0;35m\]"  # line
        _user="\[\e[1;35m\]"
        _time="\[\e[0;38;5;246m\]"
        _path="\[\e[0;34m\]"
        _jobs="\[\e[0;36m\]"
        _host_color="\[\e[0;34m\]"
        _host_separator_color=${_time}
        _git_color="\e[3;92m"
    else
        # green theme
        _l="\[\e[0;32m\]"  # line
        _user="\[\e[1;33m\]"
        _time="\[\e[0;38;5;246m\]"
        _path="\[\e[0;33m\]"
        _jobs="\[\e[0;35m\]"
        _host_color="\[\e[0;35m\]"
        _host_separator_color=${_time}
        _git_color="\e[3;36m"
    fi

    # status colors
    _success=${_l}
    _stopped=${_jobs}
    _interrupt="\[\e[0;33m\]"
    _error="\[\e[0;31m\]"

    # display host
    _show_host=0
    _host=""
    if [ $_show_host -eq 1 ]; then
        _host="${_host_separator_color}@${_host_color}\h"
    fi

    # git branch symbol
    _git_symbol=""
    # _git_symbol=""
    # _git_symbol="⎇ "
    # _git_symbol=""
    # _git_symbol=""
    # _git_symbol=""
    # _git_symbol=""

    # jobs symbol
    _jobs_symbol=""
    # _jobs_symbol=""
    # _jobs_symbol="⚙"
    # _jobs_symbol=""
    # _jobs_symbol=""
    # _jobs_symbol=""
    # _jobs_symbol=""

    # commands
    _time_cmd="${_time}\$(date +\"%H:%M:%S\")"
    _git_cmd="\$(__git_ps1 \"\${_git_color}\${_git_symbol} %s\")"
    _jobs_cmd="${_jobs}\$(__stopped_jobs \${_jobs_symbol})"

    # dynamic prompt: error color + git branch + background jobs stack
    set_prompt_color() {
        # prompt symbol color
        local status=$?
        case $status in
            0)   # success
                PC=${_success};;
            130) # SIGINT
                PC=${_interrupt};;
            147 | 148) # SIGTSTP or SIGINT
                PC=${_stopped};;
            *)   # error
                PC=${_error};;
        esac
        # git branch
        if [ -z "$(__git_ps1)" ]; then
            _gitl=""
        else
            _gitl="${_l}├─┤${_git_cmd}"
        fi
        # background jobs stack
        if [ -z "$(__stopped_jobs "$_jobs_symbol")" ]; then
            _jobsl=""
        else
            _jobsl="${_l}├─┤${_jobs_cmd}"
        fi
        PS1="${_l}╭──┤${_user}\u${_host}${_l}├─┤${_time_cmd}${_l}├─┤${_path}\w${_gitl}${_jobsl}${_l}│\n${_l}╰─${PC}▶${_reset} "
        PS1="\[\e]0;\u@\h: \w   \a\]$PS1" # set window title
    }
    export PROMPT_COMMAND="set_prompt_color;$PROMPT_COMMAND"

    # PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '  # default
else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
    fi
    unset color_prompt force_color_prompt