Merge pull request #191 from khaneliman/selectable-input
Selectable input
This commit is contained in:
Chris Titus
GitHub
commit
6d15c1b3a5
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@ -17,6 +17,115 @@ set_option() {
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fi
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echo "${1}=${2}" >>$CONFIG_FILE # add option
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}
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# Renders a text based list of options that can be selected by the
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# user using up, down and enter keys and returns the chosen option.
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#
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# Arguments : list of options, maximum of 256
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# "opt1" "opt2" ...
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# Return value: selected index (0 for opt1, 1 for opt2 ...)
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select_option() {
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# little helpers for terminal print control and key input
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ESC=$( printf "\033")
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cursor_blink_on() { printf "$ESC[?25h"; }
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cursor_blink_off() { printf "$ESC[?25l"; }
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cursor_to() { printf "$ESC[$1;${2:-1}H"; }
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print_option() { printf "$2 $1 "; }
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print_selected() { printf "$2 $ESC[7m $1 $ESC[27m"; }
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get_cursor_row() { IFS=';' read -sdR -p $'\E[6n' ROW COL; echo ${ROW#*[}; }
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get_cursor_col() { IFS=';' read -sdR -p $'\E[6n' ROW COL; echo ${COL#*[}; }
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key_input() {
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local key
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IFS= read -rsn1 key 2>/dev/null >&2
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if [[ $key = "" ]]; then echo enter; fi;
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if [[ $key = $'\x20' ]]; then echo space; fi;
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if [[ $key = "k" ]]; then echo up; fi;
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if [[ $key = "j" ]]; then echo down; fi;
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if [[ $key = "h" ]]; then echo left; fi;
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if [[ $key = "l" ]]; then echo right; fi;
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if [[ $key = "a" ]]; then echo all; fi;
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if [[ $key = "n" ]]; then echo none; fi;
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if [[ $key = $'\x1b' ]]; then
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read -rsn2 key
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if [[ $key = [A || $key = k ]]; then echo up; fi;
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if [[ $key = [B || $key = j ]]; then echo down; fi;
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if [[ $key = [C || $key = l ]]; then echo right; fi;
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if [[ $key = [D || $key = h ]]; then echo left; fi;
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fi
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}
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print_options_multicol() {
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# print options by overwriting the last lines
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local curr_col=$1
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local curr_row=$2
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local curr_idx=0
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local idx=0
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local row=0
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local col=0
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curr_idx=$(( $curr_col + $curr_row * $colmax ))
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for option in "${options[@]}"; do
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row=$(( $idx/$colmax ))
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col=$(( $idx - $row * $colmax ))
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cursor_to $(( $startrow + $row + 1)) $(( $offset * $col + 1))
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if [ $idx -eq $curr_idx ]; then
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print_selected "$option"
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else
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print_option "$option"
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fi
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((idx++))
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done
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}
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# initially print empty new lines (scroll down if at bottom of screen)
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for opt; do printf "\n"; done
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# determine current screen position for overwriting the options
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local return_value=$1
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local lastrow=`get_cursor_row`
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local lastcol=`get_cursor_col`
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local startrow=$(($lastrow - $#))
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local startcol=1
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local lines=$( tput lines )
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local cols=$( tput cols )
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local colmax=$2
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local offset=$(( $cols / $colmax ))
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local size=$4
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shift 4
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# ensure cursor and input echoing back on upon a ctrl+c during read -s
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trap "cursor_blink_on; stty echo; printf '\n'; exit" 2
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cursor_blink_off
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local active_row=0
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local active_col=0
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while true; do
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print_options_multicol $active_col $active_row
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# user key control
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case `key_input` in
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enter) break;;
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up) ((active_row--));
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if [ $active_row -lt 0 ]; then active_row=0; fi;;
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down) ((active_row++));
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if [ $active_row -ge $(( ${#options[@]} / $colmax )) ]; then active_row=$(( ${#options[@]} / $colmax )); fi;;
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left) ((active_col=$active_col - 1));
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if [ $active_col -lt 0 ]; then active_col=0; fi;;
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right) ((active_col=$active_col + 1));
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if [ $active_col -ge $colmax ]; then active_col=$(( $colmax - 1 )) ; fi;;
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esac
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done
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# cursor position back to normal
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cursor_to $lastrow
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printf "\n"
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cursor_blink_on
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return $(( $active_col + $active_row * $colmax ))
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}
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logo () {
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# This will be shown on every set as user is progressing
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echo -ne "
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@ -36,17 +145,15 @@ filesystem () {
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# This function will handle file systems. At this movement we are handling only
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# btrfs and ext4. Others will be added in future.
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echo -ne "
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Please Select your file system for both boot and root
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1) btrfs
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2) ext4
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3) luks with btrfs
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0) exit
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Please Select your file system for both boot and root
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"
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read fs
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case $fs in
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1) set_option FS btrfs;;
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2) set_option FS ext4;;
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3)
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options=("btrfs" "ext4" "luks" "exit")
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select_option $? 1 "${options[@]}"
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case $? in
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0) set_option FS btrfs;;
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1) set_option FS ext4;;
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2)
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while true; do
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echo -ne "Please enter your luks password: \n"
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read -s luks_password # read password without echo
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@ -63,54 +170,54 @@ while true; do
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fi
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done
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;;
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0) exit ;;
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3) exit ;;
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*) echo "Wrong option please select again"; filesystem;;
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esac
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}
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timezone () {
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# Added this from arch wiki https://wiki.archlinux.org/title/System_time
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time_zone="$(curl --fail https://ipapi.co/timezone)"
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echo -ne "System detected your timezone to be '$time_zone' \n"
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echo -ne "Is this correct? yes/no:"
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read answer
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case $answer in
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echo -ne "
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System detected your timezone to be '$time_zone' \n"
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echo -ne "Is this correct?
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"
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options=("Yes" "No")
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select_option $? 1 "${options[@]}"
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case ${options[$?]} in
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y|Y|yes|Yes|YES)
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echo "${time_zone} set as timezone"
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set_option TIMEZONE $time_zone;;
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n|N|no|NO|No)
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echo "Please enter your desired timezone e.g. Europe/London :"
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read new_timezone
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echo "${new_timezone} set as timezone"
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set_option TIMEZONE $new_timezone;;
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*) echo "Wrong option. Try again";timezone;;
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esac
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}
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keymap () {
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echo -ne "
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Please select key board layout from this list"
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# These are default key maps as presented in official arch repo archinstall
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options=(by ca cf cz de dk es et fa fi fr gr hu il it lt lv mk nl no pl ro ru sg ua uk us)
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PS3="
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Please select key board layout from this list
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"
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select keymap in "${options[@]}"
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do
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# check if selection is part of list, silence error output and use else block for output
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if echo -e '%s\n' "${options[@]}" | grep -Fqw $keymap 2> /dev/null; then
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echo -e "\nYour key boards layout: ${keymap} \n"
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set_option KEYMAP $keymap
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break
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else
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echo -e "\nInvalid selection, please try again. \n"
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fi
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select_option $? 4 "${options[@]}"
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keymap=${options[$?]}
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done
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echo -ne "Your key boards layout: ${keymap} \n"
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set_option KEYMAP $keymap
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}
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drivessd () {
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echo -ne "
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Is this an ssd? yes/no:
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"
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read ssd_drive
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case $ssd_drive in
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options=("Yes" "No")
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select_option $? 1 "${options[@]}"
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case ${options[$?]} in
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y|Y|yes|Yes|YES)
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set_option MOUNT_OPTIONS "noatime,compress=zstd,ssd,commit=120";;
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n|N|no|NO|No)
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@ -133,19 +240,12 @@ echo -ne "
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PS3='
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Select the disk to install on: '
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options=($(lsblk -n --output TYPE,KNAME,SIZE | awk '$1=="disk"{print "/dev/"$2"|"$3}'))
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select disk in "${options[@]}"
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do
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# check if selection is part of list, silence error output and use else block for output
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if echo -e '%s\n' "${options[@]}" | grep -Fqw ${disk} 2> /dev/null; then
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echo -e "\n${disk%|*} selected \n"
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select_option $? 1 "${options[@]}"
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disk=${options[$?]%|*}
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echo -e "\n${disk%|*} selected \n"
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set_option DISK ${disk%|*}
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break
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else
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echo -e "\nInvalid selection, please try again. \n"
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fi
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done
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drivessd
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}
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