osi-tools/lib/osi.sh

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#!/hint/bash
# Copyright (C) 2018 Luke Shumaker
# SPDX-License-Identifier: AGPL-3.0-or-later
print() {
# shellcheck disable=SC2059
printf "$(gettext -- "$1")\\n" "${@:2}"
}
error() {
local msg
msg="$(print "${@:2}")"
printf '%s: %s\n' "${0##*/}" "$msg" >&2
if (( $1 != 0 )); then
exit "$1"
fi
}
in_array() {
local needle=$1
local straw
for straw in "${@:2}"; do
if [[ $needle = "$straw" ]]; then
return 0
fi
done
return 1
}
is_sudo() {
(( UID == 0 && ${SUDO_UID:-0} != 0 ))
}
is_root() {
(( UID == 0 ))
}
needs_sudo() {
if ! is_sudo; then
error 4 "Must be invoked through sudo."
fi
}
needs_root() {
if ! is_root; then
error 4 "Must be invoked as root."
fi
}