Ultimate bash prompt

.bashrc

__normesc="$(tput sgr0)"
__boldesc="$(tput bold)"
__unboldesc='\e[22m'
__dimesc="$(tput dim)"
__italicesc="$(tput sitm)"
__unitalicesc="$(tput ritm)"
__underlineesc="$(tput smul)"
__ununderlineesc="$(tput rmul)"
__blinkesc="$(tput blink)"
__unblinkesc='\e[25m'
__reverseesc="$(tput rev)"
__unreverseesc="$(tput rmso)"
__invisibleesc="$(tput invis)"
__visibleesc='\e[28m'
__blackesc="$(tput setaf 0)"
__redesc="$(tput setaf 1)"
__greenesc="$(tput setaf 2)"
__brownesc="$(tput setaf 3)"
__blueesc="$(tput setaf 4)"
__magentaesc="$(tput setaf 5)"
__cyanesc="$(tput setaf 6)"
__whiteesc="$(tput setaf 7)"
__defaultesc='\e[39m'
__blackbgesc="$(tput setab 0)"
__redbgesc="$(tput setab 1)"
__greenbgesc="$(tput setab 2)"
__brownbgesc="$(tput setab 3)"
__bluebgesc="$(tput setab 4)"
__magentabgesc="$(tput setab 5)"
__cyanbgesc="$(tput setab 6)"
__whitebgesc="$(tput setab 7)"
__defaultbgesc='\e[49m'

ansistyle ()
{

    local tostyle="$1"
    shift
    local styles=($@)
    local codes=('\[')
    local uncodes=('\]')
    for s in "${styles[@]}"
    do
        case $s in
            bold)
                codes+=($__boldesc)
                uncodes=($__unboldesc "${uncodes[@]}")
                ;;
            dim)
                codes+=($__dimesc)
                uncodes=($__unboldesc "${uncodes[@]}")
                ;;
            italic)
                codes+=($__italicesc)
                uncodes=($__unitalicesc "${uncodes[@]}")
                ;;
            underline)
                codes+=($__underlineesc)
                uncodes=($__ununderlineesc "${uncodes[@]}")
                ;;
            blink)
                codes+=($__blinkesc)
                uncodes=(__$unblinkesc "${uncodes[@]}")
                ;;
            reverse)
                codes+=($__reverseesc)
                uncodes=($__unreverseesc "${uncodes[@]}")
                ;;
            invisible)
                codes+=($__invisibleesc)
                uncodes=($__visibleesc "${uncodes[@]}")
                ;;
            black)
                codes+=($__blackesc)
                uncodes=($__defaultesc "${uncodes[@]}")
                ;;
            blackbg)
                codes+=($__blackbgesc)
                uncodes=($__defaultbgesc "${uncodes[@]}")
                ;;
            red)
                codes+=($__redesc)
                uncodes=($__defaultesc "${uncodes[@]}")
                ;;
            redbg)
                codes+=($__redbgesc)
                uncodes=($__defaultbgesc "${uncodes[@]}")
                ;;
            green)
                codes+=($__greenesc)
                uncodes=($__defaultesc "${uncodes[@]}")
                ;;
            greenbg)
                codes+=($__greenbgesc)
                uncodes=($__defaultbgesc "${uncodes[@]}")
                ;;
            brown)
                codes+=($__brownesc)
                uncodes=($__defaultesc "${uncodes[@]}")
                ;;
            brownbg)
                codes+=($__brownbgesc)
                uncodes=($__defaultbgesc "${uncodes[@]}")
                ;;
            blue)
                codes+=($__blueesc)
                uncodes=($__defaultesc "${uncodes[@]}")
                ;;
            bluebg)
                codes+=($__bluebgesc)
                uncodes=($__defaultbgesc "${uncodes[@]}")
                ;;
            magenta)
                codes+=($__magentaesc)
                uncodes=($__defaultesc "${uncodes[@]}")
                ;;
            magentabg)
                codes+=($__magentabgesc)
                uncodes=($__defaultbgesc "${uncodes[@]}")
                ;;
            cyan)
                codes+=($__cyanesc)
                uncodes=($__defaultesc "${uncodes[@]}")
                ;;
            cyanbg)
                codes+=($__cyanbgesc)
                uncodes=($__defaultbgesc "${uncodes[@]}")
                ;;
            white)
                codes+=($__whiteesc)
                uncodes=($__defaultesc "${uncodes[@]}")
                ;;
            whitebg)
                codes+=($__whitebgesc)
                uncodes=($__defaultbgesc "${uncodes[@]}")
                ;;
            *)
                codes+=('\]<'"$s"'>\[')
                uncodes=('\]</'"$s"'>\[' "${uncodes[@]}")
                ;;
        esac
    done
    codes+=('\]')
    uncodes=('\[' "${uncodes[@]}")
    local old_ifs="$IFS"
    IFS=''
    echo -n "${codes[*]}${tostyle}${uncodes[*]}"
    IFS="$old_ifs"
}


__git_prompt_git () {
    GIT_OPTIONAL_LOCKS=0 command git "$@"
}

__git_dirty_str="$(ansistyle x red)"
__git_clean_str="$(ansistyle o green)"
parse_git_dirty () {
    local STATUS
    local -a FLAGS
    FLAGS=('--porcelain')
    STATUS=$(__git_prompt_git status "${FLAGS[@]}" 2> /dev/null | tail -n 1)
    echo -n ' '
    if [[ -n $STATUS ]]
    then
        echo -n "$__git_dirty_str"
    else
        echo -n "$__git_clean_str"
    fi
}

git_prompt_info () {
    if ! __git_prompt_git rev-parse --git-dir &> /dev/null
    then
            return 0
    fi
    local ref
    local upstream
    ref="$(__git_prompt_git symbolic-ref --short HEAD 2> /dev/null)" || ref="$(__git_prompt_git rev-parse --short HEAD 2> /dev/null)"  || return 0
    upstream="$(__git_prompt_git rev-parse --abbrev-ref --symbolic-full-name "@{upstream}" 2>/dev/null)"  && upstream=" -> ${upstream}"
    echo -n ' on '
    ansistyle "$ref$upstream" cyan
    parse_git_dirty
}

previous_command_exit_code () {
    local exit_code=$?

    if [[ $exit_code -gt 0 ]]
    then
        echo -n C:
        ansistyle $exit_code red
    fi
}

make_prompt () {
    local before_git_components=(
        '\[\e]0;\h (\u)\a\]'
        $'\n'
        '# '
        "$(ansistyle '\u' cyan bold)"
        ' @ '
        "$(ansistyle '\h' green bold underline)"
        ' in '
        "$(ansistyle '\w' brown bold)"
    )

    local after_git_components=(
        ' [\D{%T}] '
    )

    local after_exit_code_components=(
        $"\n"
        "$(ansistyle '\$' re\d bold)"
        ' '
    )

    local old_ifs="$IFS"
    IFS=

    PROMPT_COMMAND=(
        '__previous_command_exit_code="$(previous_command_exit_code)"'
        '__git_prompt_info="$(git_prompt_info)"'
        'PS1="'"${before_git_components[*]}"'$__git_prompt_info'"${after_git_components[*]}"'$__previous_command_exit_code'"${after_exit_code_components[*]}"'"'
        'unset __previous_command_exit_code __git_prompt_info'
    )

    IFS="$old_ifs"
}

make_prompt