Wei Wang | 6bf513d | 2014-08-01 11:12:37 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.bluetooth.le; |
| 18 | |
Wei Wang | 833559d | 2014-08-29 10:26:13 -0700 | [diff] [blame] | 19 | import android.bluetooth.BluetoothAdapter; |
Wei Wang | 6bf513d | 2014-08-01 11:12:37 -0700 | [diff] [blame] | 20 | import android.util.SparseArray; |
| 21 | |
| 22 | import java.util.Arrays; |
| 23 | import java.util.Iterator; |
| 24 | import java.util.Map; |
| 25 | import java.util.Objects; |
| 26 | import java.util.Set; |
| 27 | |
| 28 | /** |
| 29 | * Helper class for Bluetooth LE utils. |
| 30 | * |
| 31 | * @hide |
| 32 | */ |
Wei Wang | 833559d | 2014-08-29 10:26:13 -0700 | [diff] [blame] | 33 | public class BluetoothLeUtils { |
Wei Wang | 6bf513d | 2014-08-01 11:12:37 -0700 | [diff] [blame] | 34 | |
| 35 | /** |
| 36 | * Returns a string composed from a {@link SparseArray}. |
| 37 | */ |
| 38 | static String toString(SparseArray<byte[]> array) { |
| 39 | if (array == null) { |
| 40 | return "null"; |
| 41 | } |
| 42 | if (array.size() == 0) { |
| 43 | return "{}"; |
| 44 | } |
| 45 | StringBuilder buffer = new StringBuilder(); |
| 46 | buffer.append('{'); |
| 47 | for (int i = 0; i < array.size(); ++i) { |
Wei Wang | ee80922 | 2014-08-12 22:16:32 -0700 | [diff] [blame] | 48 | buffer.append(array.keyAt(i)).append("=").append(Arrays.toString(array.valueAt(i))); |
Wei Wang | 6bf513d | 2014-08-01 11:12:37 -0700 | [diff] [blame] | 49 | } |
| 50 | buffer.append('}'); |
| 51 | return buffer.toString(); |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * Returns a string composed from a {@link Map}. |
| 56 | */ |
| 57 | static <T> String toString(Map<T, byte[]> map) { |
| 58 | if (map == null) { |
| 59 | return "null"; |
| 60 | } |
| 61 | if (map.isEmpty()) { |
| 62 | return "{}"; |
| 63 | } |
| 64 | StringBuilder buffer = new StringBuilder(); |
| 65 | buffer.append('{'); |
| 66 | Iterator<Map.Entry<T, byte[]>> it = map.entrySet().iterator(); |
| 67 | while (it.hasNext()) { |
| 68 | Map.Entry<T, byte[]> entry = it.next(); |
| 69 | Object key = entry.getKey(); |
| 70 | buffer.append(key).append("=").append(Arrays.toString(map.get(key))); |
| 71 | if (it.hasNext()) { |
| 72 | buffer.append(", "); |
| 73 | } |
| 74 | } |
| 75 | buffer.append('}'); |
| 76 | return buffer.toString(); |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Check whether two {@link SparseArray} equal. |
| 81 | */ |
| 82 | static boolean equals(SparseArray<byte[]> array, SparseArray<byte[]> otherArray) { |
| 83 | if (array == otherArray) { |
| 84 | return true; |
| 85 | } |
| 86 | if (array == null || otherArray == null) { |
| 87 | return false; |
| 88 | } |
| 89 | if (array.size() != otherArray.size()) { |
| 90 | return false; |
| 91 | } |
| 92 | |
| 93 | // Keys are guaranteed in ascending order when indices are in ascending order. |
| 94 | for (int i = 0; i < array.size(); ++i) { |
| 95 | if (array.keyAt(i) != otherArray.keyAt(i) || |
| 96 | !Arrays.equals(array.valueAt(i), otherArray.valueAt(i))) { |
| 97 | return false; |
| 98 | } |
| 99 | } |
| 100 | return true; |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Check whether two {@link Map} equal. |
| 105 | */ |
| 106 | static <T> boolean equals(Map<T, byte[]> map, Map<T, byte[]> otherMap) { |
| 107 | if (map == otherMap) { |
| 108 | return true; |
| 109 | } |
| 110 | if (map == null || otherMap == null) { |
| 111 | return false; |
| 112 | } |
| 113 | if (map.size() != otherMap.size()) { |
| 114 | return false; |
| 115 | } |
| 116 | Set<T> keys = map.keySet(); |
| 117 | if (!keys.equals(otherMap.keySet())) { |
| 118 | return false; |
| 119 | } |
| 120 | for (T key : keys) { |
| 121 | if (!Objects.deepEquals(map.get(key), otherMap.get(key))) { |
| 122 | return false; |
| 123 | } |
| 124 | } |
| 125 | return true; |
| 126 | } |
Wei Wang | 833559d | 2014-08-29 10:26:13 -0700 | [diff] [blame] | 127 | |
| 128 | /** |
| 129 | * Ensure Bluetooth is turned on. |
| 130 | * |
| 131 | * @throws IllegalStateException If {@code adapter} is null or Bluetooth state is not |
| 132 | * {@link BluetoothAdapter#STATE_ON}. |
| 133 | */ |
| 134 | static void checkAdapterStateOn(BluetoothAdapter adapter) { |
Nitin Arora | d055adb | 2015-03-02 15:03:51 -0800 | [diff] [blame] | 135 | if (adapter == null || !adapter.isLeEnabled()) {//adapter.getState() != BluetoothAdapter.STATE_ON) { |
Wei Wang | 833559d | 2014-08-29 10:26:13 -0700 | [diff] [blame] | 136 | throw new IllegalStateException("BT Adapter is not turned ON"); |
| 137 | } |
| 138 | } |
| 139 | |
Wei Wang | 6bf513d | 2014-08-01 11:12:37 -0700 | [diff] [blame] | 140 | } |