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#!/bin/sh
# Copyright 2016 The Bazel Authors. All rights reserved.
#
# 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.
set -eu
# Combine the archives passed to a single archive.
# NOTE: This assumes that the individual archives are already packed
# in a way to contain canonical timestamps. This assumption must be
# met in order to obtain reproducible output; the assumption is met
# for the source tree and the archive of the generated java files.
OUTPUT="${PWD}/$1"
shift
TMP_DIR=${TMPDIR:-/tmp}
PACKAGE_DIR="$(mktemp -d ${TMP_DIR%%/}/bazel.XXXXXXXX)"
trap "rm -fr \"${PACKAGE_DIR}\"" EXIT
mkdir -p "${PACKAGE_DIR}"
for i in $*
do
ARCHIVE="${PWD}/$i"
case "$i" in
*.zip) UNPACK="unzip -q" ;;
*.tar) UNPACK="tar xf" ;;
esac
(cd "${PACKAGE_DIR}" && ${UNPACK} "${ARCHIVE}")
done
(cd "${PACKAGE_DIR}" && tar -c -f "${OUTPUT}" --group=0 --owner=0 \
$(find . -type f | sort))
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