Jeff Sharkey | a103114 | 2014-07-12 18:09:46 -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.util; |
| 18 | |
| 19 | import java.io.IOException; |
| 20 | |
| 21 | /** |
| 22 | * Utility methods for proxying richer exceptions across Binder calls. |
| 23 | * |
| 24 | * @hide |
| 25 | */ |
| 26 | public class ExceptionUtils { |
| 27 | // TODO: longer term these should be replaced with first-class |
| 28 | // Parcel.read/writeException() and AIDL support, but for now do this using |
| 29 | // a nasty hack. |
| 30 | |
| 31 | private static final String PREFIX_IO = "\u2603"; |
| 32 | |
| 33 | public static RuntimeException wrap(IOException e) { |
| 34 | throw new IllegalStateException(PREFIX_IO + e.getMessage()); |
| 35 | } |
| 36 | |
| 37 | public static void maybeUnwrapIOException(RuntimeException e) throws IOException { |
| 38 | if ((e instanceof IllegalStateException) && e.getMessage().startsWith(PREFIX_IO)) { |
| 39 | throw new IOException(e.getMessage().substring(PREFIX_IO.length())); |
| 40 | } |
| 41 | } |
Jeff Sharkey | 78a1301 | 2014-07-15 20:18:34 -0700 | [diff] [blame] | 42 | |
| 43 | public static String getCompleteMessage(String msg, Throwable t) { |
| 44 | final StringBuilder builder = new StringBuilder(); |
| 45 | if (msg != null) { |
| 46 | builder.append(msg).append(": "); |
| 47 | } |
| 48 | builder.append(t.getMessage()); |
| 49 | while ((t = t.getCause()) != null) { |
| 50 | builder.append(": ").append(t.getMessage()); |
| 51 | } |
| 52 | return builder.toString(); |
| 53 | } |
| 54 | |
| 55 | public static String getCompleteMessage(Throwable t) { |
| 56 | return getCompleteMessage(null, t); |
| 57 | } |
Jeff Sharkey | a103114 | 2014-07-12 18:09:46 -0700 | [diff] [blame] | 58 | } |