rwx_file_append() {
	local file="${1}"
	local text="${2}"
	if [ -n "${file}" ]; then
		printf "%s" "${text}" >>"${file}"
	fi
}

rwx_file_empty() {
	local file="${1}"
	if [ -n "${file}" ]; then
		rwx_file_write "${file}" ""
	fi
}

rwx_file_write() {
	local file="${1}"
	local text="${2}"
	if [ -n "${file}" ]; then
		printf "%s" "${text}" >"${file}"
	fi
}

rwx_link() {
	local link="${1}"
	local target="${2}"
	ln \
		--symbolic \
		"${target}" \
		"${link}"
}

rwx_list_block_devices() {
	lsblk \
		--noempty \
		--output "NAME,SIZE,TYPE,FSTYPE,LABEL,MOUNTPOINTS"
}

rwx_not() {
	case "${1}" in
	"false") echo "true" ;;
	"true") echo "false" ;;
	*) ;;
	esac
}

rwx_read_passphrase() {
	rwx_read_secret "PassPhrase: "
}

rwx_read_secret() {
	local prompt="${1}"
	local secret
	printf "%s" "${prompt}" 1>&2
	stty -echo
	read -r secret
	stty echo
	echo >&2
	echo "${secret}"
	unset secret
}

rwx_remove() {
	rm \
		--force \
		--recursive \
		"${@}"
}

rwx_warn_wipe() {
	local tmp
	rwx_list_block_devices
	printf "%s" "WIPE ${*} /?\\ OR CANCEL /!\\"
	read -r tmp
	rwx_log_trace "${tmp}"
}