mirror of
https://codeberg.org/privacy1st/arch-installer
synced 2024-12-23 02:16:05 +01:00
102 lines
2.9 KiB
Bash
102 lines
2.9 KiB
Bash
function ask_user_if_empty {
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# If variable with name $1 is empty, then ask for user input.
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#
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# Only one line of user input is allowed.
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# The input must not be empty.
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#
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# arg $1: name of variable to store user input
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# arg $2: text to display (e.g. "Enter hostname:")
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if [ "$#" -ne 2 ]; then
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echo 'ask_user_if_empty requires two args!';
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return 1
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fi
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for i in "$@"; do
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if [ -z "${i}" ]; then
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echo 'ask_user_if_empty: all given args must not be empty';
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return 1;
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fi
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done
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local -n ptr=$1 || return $?
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if [ -z "${ptr}" ]; then
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# if ptr has no value yet, ask user for input!
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echo "${2}"
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read -r ptr || return $?
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fi
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# check string length to be greater than zero!
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if [ "${#ptr}" -lt 1 ]; then
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echo 'The input must not be empty!';
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return 1;
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fi
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}
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function single_choice_if_empty {
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# If variable with name $1 is empty, then let user select one of the given options.
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#
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# arg $1: name of variable to store the selected option
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# arg $2: text to display
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# arg $3: name of variable with array of options to display (for each option there must be two entries in the array: Item and description)
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if [ "$#" -ne 3 ]; then
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echo 'single_choice_if_empty requires three args!';
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return 1
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fi
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for i in "$@"; do
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if [ -z "${i}" ]; then
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echo 'single_choice_if_empty: all given args must not be empty';
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return 1;
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fi
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done
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local -n ptr=$1 || return $?
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if [ -z "${ptr}" ]; then
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# if ptr has no value yet, ask user for input!
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local -n MENU_OPTIONS=$3 || return $?
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ptr=$(dialog --stdout --menu "${2}" 0 0 0 "${MENU_OPTIONS[@]}") || {
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echo 'Error during menu selection!'
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exit 1
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}
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clear
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fi
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}
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function multi_choice_if_empty {
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# If variable with name $1 is empty, then let user select one or more of the given options.
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#
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# arg $1: name of variable to store array of selected options
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# arg $2: text to display
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# arg $3: name of variable with array of options to display (for each option there must be three entries in the array: Item, description, on/off)
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if [ "$#" -ne 3 ]; then
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echo 'multi_choice_if_empty requires three args!';
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return 1
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fi
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for i in "$@"; do
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if [ -z "${i}" ]; then
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echo 'multi_choice_if_empty: all given args must not be empty';
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return 1;
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fi
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done
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local -n ptr=$1 || return $?
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if [ -z "${ptr}" ]; then
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# if ptr has no value yet, ask user for input!
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local -n MENU_OPTIONS=$3 || return $?
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TMP1=$(dialog --stdout --checklist "${2}" 0 0 0 "${MENU_OPTIONS[@]}") || {
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echo 'Error during menu selection!'
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exit 1
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}
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clear
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# Result of dialog is space separated list
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# Store this as an array
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# Without newline at last array element: https://unix.stackexchange.com/a/519917/315162
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# readarray -d " " -t ptr < <(printf '%s' "$TMP1")
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#
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space_separated_to_array TMP1 "$1"
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fi
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}
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