Nov 18, 2024 | tui-lib/options.sh | + Пример использования библиотеке в отдельном файле sm.sh

options.sh

w_init()
{
    printf "\e[?25l\e[2J"
    trap "w_reset""" SIGINT EXIT
}
w_reset()
{
    printf "\e[?25h\e[0m"
    clear
    exit 0
}
w_init ""

create_menus()
{
    local groupName="$1"
    local optionName="$2"
    local actionName="$3"

    if (( ${#namesOfGroups[@]} == 0 )); then
        defaultGroup="$groupName"
        namesOfGroups+=("$groupName")
    fi
    for i in "${namesOfGroups[@]}"; do
        if [[ "$i" == "$groupName" ]]; then
            found=1
            break
        fi
    done

    if (( ! $found )); then
        namesOfGroups+=("$groupName")
    fi

    eval "${groupName}Options+=(\"${optionName}\")"
    eval "${groupName}Actions+=(\"${actionName}\")"
    found=0
}

switch_menu()
{
    currentGroup="$1"
    output="pressed"
    eval "COUNT=\${#${currentGroup}Options[@]}"
    CHOICE=0
}

switch_to_default_group()
{
    currentGroup="$defaultGroup"
    output="home"
    eval "COUNT=\${#${currentGroup}Options[@]}"
    CHOICE=0
}

execute_action() { eval "\${${currentGroup}Actions[\$(( CHOICE ))]}"; }
update_status_bar_info() { eval "printf \"\e[\${${currentGroup}StatusBarLinePos};\${${currentGroup}StatusBarColPos}H# %s\" \"$output\""; }

input_handler()
{
    read -rsn1 key
    case $key in
        k) (( CHOICE-- ));;
        j) (( CHOICE++ ));;
        "") execute_action "";;
        1) CHOICE=0 && execute_action "" ;;
        2) CHOICE=1 && execute_action "" ;;
        3) CHOICE=2 && execute_action "" ;;
        4) CHOICE=3 && execute_action "" ;;
        5) CHOICE=4 && execute_action "" ;;
        q) exit 0 ;;
    esac

    (( CHOICE == $(( COUNT )) )) && CHOICE=0
    (( CHOICE == -1 )) && CHOICE=$((COUNT - 1))
    UNPAUSE=1
}

update_options()
{
    printf "\e[2J"
    eval "printf \"%b\" \"\${formed${currentGroup}Options[@]}\""
}

form_options()
{
    for i in "${namesOfGroups[@]}"; do
        local groupName="$i"

        if [[ "$groupName" !=  "$defaultGroup" ]]; then
            eval "${groupName}Options+=(\"<- back\")"
            eval "${groupName}Actions+=(switch_to_default_group)"
        else
            eval "${groupName}Options+=(\"exit\")"
            eval "${groupName}Actions+=(exit 0)"
        fi

        eval "options=(\"\${${groupName}Options[@]}\")"

        find_centers()
        {
            for i in ${options[i]}; do
                if (( ${#options[i]} > max )); then
                    indx=$i
                    max=$(( ${#options[i]} / 2 ))
                fi
            done

            cols=$(tput cols)
            lines=$(tput lines)
            cntOfLines=0
            linesB=$(( lines / 2 ))
            colL=$(( ${#options[indx]} / 2 ))
            colB="$(( cols / 2 ))"
            value=$(( colB - colL ))

            if (( ${#options[@]} % 2 == 0 )); then
                cntOfLines=$(( linesB - $(( ${#options[@]} / 2 )) + 1 ))
            else
                cntOfLines=$(( linesB - $(( $(( ${#options[@]} - 1 )) / 2 )) + 1 ))
            fi
        }
        find_centers ""

        # j=${#options[@]}
        for ((i=0; i <= ${#options[@]}; i++ )); do
            center=$(( ${#options[i]} / 2 ))
            # cenCopy=$center
            cntOfSpaces=$(( value + max - center ))
            eval "formed${groupName}Options+=(\"\e[$(( cntOfLines + i ));${cntOfSpaces}H${options[$i]}\e[0m\n\")"
            # (( j-- ))
        done

        eval "${groupName}StatusBarLinePos=$(( cntOfLines + ${#options[@]} + 1 ))"
        eval "${groupName}StatusBarColPos=$(( value ))"
        # eval "formed${groupName}Options+=(\"\e[$(( cntOfLines + ${#options[@]} + 1 ));${cntOfSpaces}H# \")"
        unset max
    done

    UNPAUSE=1
    currentGroup="$defaultGroup"
    eval "COUNT=\${#${currentGroup}Options[@]}"
    CHOICE=0

    for ((;;))
    {
        (( UNPAUSE )) && update_options && update_status_bar_info
        UNPAUSE=0
        eval "printf \"\e[7m%b\" \"\${formed${currentGroup}Options[$(( CHOICE ))]}\""
        input_handler ""
    }
}

sm.sh

# Стандартное меню - первое объявленное меню с помощью create_option
# Переключаться на меню можно с помощью switch_menu "<menuName>"
# create_menu "<menuName>" <optionName>" "<action>"
# После объявления и использования всех функций необходимо написать form_options "" в конце файла 
source "$HOME/scripts/tui-lib/options.sh"

m1="Main"
m2="Frequency"

create_menus "$m1" "switch CPU frequency" "switch_menu "$m2""
create_menus "$m2" "2,0 GHz" "manage_CPU_freq_limit "1""
create_menus "$m2" "2,7 GHz" "manage_CPU_freq_limit "2""

manage_CPU_freq_limit()
{
case "$1" in
        "1")
            sudo cpupower frequency-set -u 2.00GHz >> /dev/null
            output="2.00GHz CAP"
            ;;
        "2")
            sudo cpupower frequency-set -u 2.70GHz >> /dev/null
            output="2.70GHz CAP"
            ;;
        *)
            sudo cpupower frequency-set -u 10.00GHz >> /dev/null
            output="frequency reset"
            ;;
    esac
}

form_options ""

Если скрипт использует команды, которые требуют исполнения от администратора, то я делаю alias на такой случай:
sm="sudo -E ~/sm.sh"