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#!/bin/bash
# Copyright 2018 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
set -eu
RUNFILES="${RUNFILES:-$0.runfiles}"
RUNFILES_MANIFEST_FILE="${RUNFILES_MANIFEST_FILE:-$RUNFILES/MANIFEST}"
IS_WINDOWS=false
case "$(uname | tr [:upper:] [:lower:])" in
msys*|mingw*|cygwin*)
IS_WINDOWS=true
esac
if "$IS_WINDOWS" && ! type rlocation &> /dev/null; then
function rlocation() {
# Use 'sed' instead of 'awk', so if the absolute path ($2) has spaces, it
# will be printed completely.
local result="$(grep "$1" "${RUNFILES_MANIFEST_FILE}" | head -1)"
# If the entry has a space, it is a mapping from a runfiles-path to absolute
# path, otherwise it resolves to itself.
echo "$result" | grep -q " " \
&& echo "$result" | sed 's/^[^ ]* //' \
|| echo "$result"
}
fi
# Find helper artifacts:
# Windows (in MANIFEST): <repository_name>/<path/to>/file
# Linux/MacOS (symlink): ${RUNFILES}/<repository_name>/<path/to>/file
if "$IS_WINDOWS"; then
INPUT="$(rlocation "[^/]*/tools/android/desugared_java8_legacy_libs.jar")"
CONFIG="$(rlocation "[^/]*/tools/android/minify_java8_legacy_libs.cfg")"
SCAN="$(rlocation "[^/]*/src/tools/android/java/com/google/devtools/build/android/desugar/scan/KeepScanner")"
PG="$(rlocation "[^/]*/third_party/java/proguard/proguard")"
DEXER="$(rlocation "[^/]*/tools/android/dexer")"
else
INPUT="$(find "${RUNFILES}" -path "*/tools/android/desugared_java8_legacy_libs.jar" | head -1)"
CONFIG="$(find "${RUNFILES}" -path "*/tools/android/minify_java8_legacy_libs.cfg" | head -1)"
SCAN="$(find "${RUNFILES}" -path "*/src/tools/android/java/com/google/devtools/build/android/desugar/scan/KeepScanner" | head -1)"
DEXER="$(find "${RUNFILES}" -path "*/tools/android/dexer" | head -1)"
fi
android_jar=
binary_jar=
dest=
while [[ "$#" -gt 0 ]]; do
arg="$1"; shift;
case "${arg}" in
--binary) binary_jar="$1"; shift ;;
--binary=*) binary_jar="${arg:9}" ;;
--output) dest="$1"; shift ;;
--output=*) dest="${arg:9}" ;;
--android_jar) android_jar="$1"; shift ;;
--android_jar=*) android_jar="${arg:14}" ;;
*) echo "Unknown flag: ${arg}"; exit 1 ;;
esac
done
todex="${INPUT}"
if [[ -n "${binary_jar}" ]]; then
tmpdir=$(mktemp -d)
trap "rm -rf ${tmpdir}" EXIT
# Minification requested
# 1. compute -keep rules from binary
seeds="${tmpdir}/seeds.cfg"
"${SCAN}" \
--input "${binary_jar}" \
--classpath_entry "${todex}" \
--bootclasspath_entry "${android_jar}" \
--keep_file "${seeds}"
# 2. proguard with -keep rules generated above and standard config file.
# Use app's android.jar as -libraryjar.
todex="${tmpdir}/proguarded.jar"
"${PG}" \
-injars "${INPUT}" \
-outjars "${todex}" \
-libraryjars "${android_jar}" \
"@${CONFIG}" \
"@${seeds}"
fi
# Convert .jar file to .dex
"${DEXER}" --dex "--output=${dest}" "${todex}"
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