#!/bin/sh

readonly HEADER='// This file is part of Gear.'
readonly LICENSE='
// This file is part of Gear.
//
// Copyright (C) 2021-2025 Gear Technologies Inc.
// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.'

main() {
    for file in "$@"
    do
        header="$(head -n 1 "$file")"
        if [ "$header" != "$HEADER" ]
        then
            REAL_LICENSE="$(echo "$LICENSE" | sed 1d)"
            printf '%s\n\n%s' "${REAL_LICENSE}" "$(cat "$file")" > "$file"
        fi
    done
}

main "$@"
