#!/bin/bash
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#
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# Copyright 2019 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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if [[ ${#@} != 1 ]]; then
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cat <<EOF
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Usage
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host_bcp <image> | xargs <art-host-tool> ...
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Extracts boot class path locations from <image> and outputs the appropriate
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--runtime-arg -Xbootclasspath:...
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--runtime-arg -Xbootclasspath-locations:...
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arguments for many ART host tools based on the \$ANDROID_PRODUCT_OUT variable
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and existing \$ANDROID_PRODUCT_OUT/apex/com.android.runtime* paths.
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EOF
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exit 1
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fi
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IMAGE=$1
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if [[ ! -e ${IMAGE} ]]; then
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IMAGE=${ANDROID_PRODUCT_OUT}$1
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if [[ ! -e ${IMAGE} ]]; then
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echo "Neither $1 nor ${ANDROID_PRODUCT_OUT}$1 exists."
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exit 1
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fi
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fi
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BCPL=`grep -az -A1 -E '^bootclasspath$' ${IMAGE} 2>/dev/null | \
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xargs -0 echo | gawk '{print $2}'`
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if [[ "x${BCPL}" == "x" ]]; then
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echo "Failed to extract boot class path locations from $1."
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exit 1
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fi
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RUNTIME_APEX=/apex/com.android.runtime
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RUNTIME_APEX_SELECTED=
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for d in `ls -1 -d ${ANDROID_PRODUCT_OUT}${RUNTIME_APEX}* 2>/dev/null`; do
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if [[ "x${RUNTIME_APEX_SELECTED}" != "x" ]]; then
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echo "Multiple Runtime apex dirs: ${RUNTIME_APEX_SELECTED}, ${d}."
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exit 1
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fi
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RUNTIME_APEX_SELECTED=${d}
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done
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if [[ "x${RUNTIME_APEX_SELECTED}" == "x" ]]; then
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echo "No Runtime apex dir."
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exit 1
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fi
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BCP=
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OLD_IFS=${IFS}
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IFS=:
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for COMPONENT in ${BCPL}; do
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HEAD=${ANDROID_PRODUCT_OUT}
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TAIL=${COMPONENT}
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if [[ ${COMPONENT:0:${#RUNTIME_APEX}} = ${RUNTIME_APEX} ]]; then
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HEAD=${RUNTIME_APEX_SELECTED}
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TAIL=${COMPONENT:${#RUNTIME_APEX}}
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fi
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BCP="${BCP}:${HEAD}${TAIL}"
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done
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IFS=${OLD_IFS}
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BCP=${BCP:1} # Strip leading ':'.
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echo --runtime-arg -Xbootclasspath:${BCP} \
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--runtime-arg -Xbootclasspath-locations:${BCPL}
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