| /* |
| * Copyright (C) 2018 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 com.android.server.connectivity.ipmemorystore; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.net.ipmemorystore.Blob; |
| |
| /** {@hide} */ |
| public class Utils { |
| /** Pretty print */ |
| public static String blobToString(@Nullable final Blob blob) { |
| return "Blob : " + byteArrayToString(null == blob ? null : blob.data); |
| } |
| |
| /** Pretty print */ |
| public static String byteArrayToString(@Nullable final byte[] data) { |
| if (null == data) return "null"; |
| final StringBuilder sb = new StringBuilder("["); |
| if (data.length <= 24) { |
| appendByteArray(sb, data, 0, data.length); |
| } else { |
| appendByteArray(sb, data, 0, 16); |
| sb.append("..."); |
| appendByteArray(sb, data, data.length - 8, data.length); |
| } |
| sb.append("]"); |
| return sb.toString(); |
| } |
| |
| // Adds the hex representation of the array between the specified indices (inclusive, exclusive) |
| private static void appendByteArray(@NonNull final StringBuilder sb, @NonNull final byte[] ar, |
| final int from, final int to) { |
| for (int i = from; i < to; ++i) { |
| sb.append(String.format("%02X", ar[i])); |
| } |
| } |
| } |