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# Copyright 2022 Northern.tech AS
#
# 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
#
# http://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.
#
# Parse the filename from the zipped output
#
# $1 - Zip archive path
#
# @return - Name of the img contained in the archive
#
function zip_get_imgname() {
if [[ $# -ne 1 ]]; then
log_fatal "zip_get_imgname requires one argument"
fi
local -r disk_image="${1}"
# Assert that the archive holds only one file
nfiles="$(unzip -l ${disk_image} | awk '{nfiles=$2} END {print nfiles}')"
[[ "$nfiles" -ne 1 ]] && log_fatal "Zip archive has more than one file. Needs to be unzipped by a human. nfiles: $nfiles"
local -r filename="$(unzip -lq ${disk_image} | awk 'NR==3 {filename=$NF} END {print filename}')"
[[ ${filename} == *.img ]] || log_fatal "no img file found in the zip archive ${disk_image}."
echo "$(basename ${filename})"
}