| /* |
| * Copyright (C) 2021 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.nearby.common.ble.util; |
| |
| import android.annotation.Nullable; |
| import android.util.SparseArray; |
| |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| /** Helper class for Bluetooth LE utils. */ |
| public final class StringUtils { |
| private StringUtils() { |
| } |
| |
| /** Returns a string composed from a {@link SparseArray}. */ |
| public static String toString(@Nullable SparseArray<byte[]> array) { |
| if (array == null) { |
| return "null"; |
| } |
| if (array.size() == 0) { |
| return "{}"; |
| } |
| StringBuilder buffer = new StringBuilder(); |
| buffer.append('{'); |
| for (int i = 0; i < array.size(); ++i) { |
| buffer.append(array.keyAt(i)).append("=").append(Arrays.toString(array.valueAt(i))); |
| } |
| buffer.append('}'); |
| return buffer.toString(); |
| } |
| |
| /** Returns a string composed from a {@link Map}. */ |
| public static <T> String toString(@Nullable Map<T, byte[]> map) { |
| if (map == null) { |
| return "null"; |
| } |
| if (map.isEmpty()) { |
| return "{}"; |
| } |
| StringBuilder buffer = new StringBuilder(); |
| buffer.append('{'); |
| Iterator<Map.Entry<T, byte[]>> it = map.entrySet().iterator(); |
| while (it.hasNext()) { |
| Map.Entry<T, byte[]> entry = it.next(); |
| Object key = entry.getKey(); |
| buffer.append(key).append("=").append(Arrays.toString(map.get(key))); |
| if (it.hasNext()) { |
| buffer.append(", "); |
| } |
| } |
| buffer.append('}'); |
| return buffer.toString(); |
| } |
| } |