mirror of
https://codeberg.org/privacy1st/arch-installer
synced 2024-12-23 02:16:05 +01:00
85 lines
2.6 KiB
Bash
85 lines
2.6 KiB
Bash
function ask_user_if_empty {
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# If variable named $1 is empty, then ask for user input.
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#
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# One line of user input is read.
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# The user 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 $2: Text to display (e.g. "Enter hostname:")
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validate_args 2 "$@" || return $?
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local -n user_input_ptr=$1
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local display_text="${2}"
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# If user_input_ptr is not empty, return
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if [ -n "${user_input_ptr:-}" ]; then
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return 0
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fi
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# Else, ask for user input!
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printf '%s\n' "${display_text}"
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read -r user_input_ptr || return $?
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# User input must not be empty
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if [ -z "${user_input_ptr}" ]; 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 named $1 is empty,
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# 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-name
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# arg $2: Text to display
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# arg $3: Name of variable with array of options to display (for each option there must be two entries in the array: name and description)
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validate_args 3 "$@" || return $?
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local -n selected_option_ptr=$1
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local display_text="${2}"
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local -n menu_options_ptr=$3
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# If selected_option_ptr is not empty, return.
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if [ -n "${selected_option_ptr:-}" ]; then
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return 0
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fi
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# Else, ask for user input!
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selected_option_ptr=$(dialog --stdout --menu "${display_text}" 0 0 0 "${menu_options_ptr[@]}") || {
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echo 'Error during menu selection!'
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return 1
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}
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clear
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}
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function multi_choice_if_empty {
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# If variable named $1 is empty,
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# 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 the selected option-names as array
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# arg $2: Text to display
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# arg $3: Name of variable with array of options to display (for each option there must be three entries in the array: name, description, on/off)
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validate_args 3 "$@" || return $?
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local -n selected_option_ptr=$1
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local display_text="${2}"
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local -n menu_options_ptr=$3
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# If selected_option_ptr is not empty, return.
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if [ -n "${selected_option_ptr:-}" ]; then
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return 0
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fi
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# Else, ask for user input!
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selected_option_ptr=$(dialog --stdout --checklist "${display_text}" 0 0 0 "${menu_options_ptr[@]}") || {
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echo 'Error during menu selection!'
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return 1
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}
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clear
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# Result of dialog is a 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' "selected_option_ptr")
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#
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space_separated_to_array selected_option_ptr selected_option_ptr || return $?
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}
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