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https://codeberg.org/privacy1st/arch-installer
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40 lines
1.0 KiB
Bash
40 lines
1.0 KiB
Bash
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#!/bin/bash
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# source: https://stackoverflow.com/a/52678279/6334421
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# A variable can be assigned the nameref attribute using the -n option
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# to the declare or local builtin commands (see Bash Builtins) to create
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# a nameref, or a reference to another variable. This allows variables to
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# be manipulated indirectly.
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function text_input {
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# If variable of name $1 is zero, then ask user for input.
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# Only one line user input is allowed.
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# User input must not be empty.
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#
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# $1: variable name to store input to
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# $2: text to display (e.g. "Enter hostname:")
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if [ -z "${1}" ] || [ -z "${2}" ]; then
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echo 'text_input requires two args!';
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return 1
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fi
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local -n ptr=$1 || return $?
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if [ -z "${ptr}" ]; then
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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 'text_input must not be empty!';
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return 1;
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fi
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}
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text_input foo 'Enter something funny:'
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echo "Input: ${foo}"
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bar=''
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text_input bar 'Enter something even funnier:'
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echo "Input: ${bar}"
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