prepare.sh

#!/bin/bash
BASE_URL="https://android.googlesource.com"
BRANCH="android10-release"
SCRIPT_DIR=`dirname "$BASH_SOURCE"`

download_snapshot() {
    PROJECT_NAME=${1}
    FILE_NAME=${2}
    FILE=${SCRIPT_DIR}/${FILE_NAME}-refs_heads_${BRANCH}.tar.gz
    echo "Downloading $FILE ..."
    if [ -f "$FILE" ]; then
        echo "$FILE exist"
    else 
        curl ${BASE_URL}/platform/${PROJECT_NAME}/+archive/refs/heads/${BRANCH}.tar.gz -o ${FILE}
    fi
    rm -rf ${SCRIPT_DIR}/../${PROJECT_NAME}
    mkdir -p ${SCRIPT_DIR}/../${PROJECT_NAME}
    tar xzf ${FILE} -C ${SCRIPT_DIR}/../${PROJECT_NAME}
}

download_snapshot frameworks/native native
download_snapshot system/core core
download_snapshot frameworks/base base
download_snapshot external/expat expat
download_snapshot external/libpng libpng
download_snapshot external/protobuf protobuf
download_snapshot external/zlib zlib
download_snapshot external/libcxx libcxx
download_snapshot external/libcxxabi libcxxabi
download_snapshot external/compiler-rt compiler-rt
download_snapshot system/libbase libbase
download_snapshot system/libziparchive libziparchive
download_snapshot libnativehelper libnativehelper