| /* |
| * Copyright (C) 2022 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| package android.app.sdksandbox; |
| |
| import java.io.File; |
| import java.util.List; |
| import java.util.Objects; |
| |
| /** |
| * Utility class for performing file related operations |
| * |
| * @hide |
| */ |
| public class FileUtil { |
| |
| public static final String TAG = "SdkSandboxManager"; |
| public static final int CONVERSION_FACTOR_FROM_BYTES_TO_KB = 1024; |
| |
| /** Calculate the storage of SDK iteratively */ |
| public static int getStorageInKbForPaths(List<String> paths) { |
| float storageSize = 0; |
| for (int i = 0; i < paths.size(); i++) { |
| final File dir = new File(paths.get(i)); |
| |
| if (Objects.nonNull(dir)) { |
| storageSize += getStorageForFiles(dir.listFiles()); |
| } |
| } |
| return convertByteToKb(storageSize); |
| } |
| |
| private static float getStorageForFiles(File[] files) { |
| if (Objects.isNull(files)) { |
| return 0; |
| } |
| |
| float sizeInBytes = 0; |
| |
| for (File file : files) { |
| if (file.isDirectory()) { |
| sizeInBytes += getStorageForFiles(file.listFiles()); |
| } else { |
| sizeInBytes += file.length(); |
| } |
| } |
| return sizeInBytes; |
| } |
| |
| private static int convertByteToKb(float storageSize) { |
| return (int) (storageSize / CONVERSION_FACTOR_FROM_BYTES_TO_KB); |
| } |
| } |