project-edgeos/sys-kernel/lakitu-kernel-6_1/update_kernel.sh

#!/bin/bash
#
# Copyright 2023 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# This script is given one argument: the base of the source directory of
# the package, and it prints a string on stdout with the numerical version
# number for said repo.
#
# shellcheck disable=SC2001
set -ex


function get_ebuild() {
    ls -- *-r*.ebuild
}

function get_revision() {
    local ebuild; ebuild="$(ls -- *-r*.ebuild)"
    local ebuild="${ebuild%.ebuild}"
    local revision="${ebuild#*-r}"
    echo "${revision}"
}

DIR="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
COS_KERNEL="${DIR}/../../../project-lakitu/sys-kernel/lakitu-kernel-6_1/"
COS_EBUILD="$(ls -- "${COS_KERNEL}"/lakitu-kernel-6_1*r*.ebuild)"
COS_EBUILD_VERSION="$(echo "${COS_EBUILD}" | sed 's/.*lakitu-kernel-6_1-\([0-9\.]*\)-.*/\1/')"
VERSIONS="$(grep CROS_WORKON_ "${COS_EBUILD}")"
EBUILD="$(get_ebuild)"
BASE_EBUILD="$(realpath "${EBUILD}")"
REV="$(get_revision)"
NEXT_REV=$((REV+1))
for line in ${VERSIONS}; do
    sed -i "s,${line%=*}=.*,${line}," "${BASE_EBUILD}"
done
NEW_BASE_NAME="lakitu-kernel-6_1-${COS_EBUILD_VERSION}"
mv "${BASE_EBUILD}" "${NEW_BASE_NAME}.ebuild"
rm "${EBUILD}"
ln -s "${NEW_BASE_NAME}.ebuild" "${NEW_BASE_NAME}-r${NEXT_REV}.ebuild"