1 /* 2 * Copyright (C) 2017 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 com.android.internal.os; 18 19 import java.io.ByteArrayOutputStream; 20 import java.io.IOException; 21 import java.io.OutputStream; 22 23 /** 24 * Helper class to get byte data through a pipe from a client app. Also {@see TransferPipe}. 25 */ 26 public class ByteTransferPipe extends TransferPipe { 27 static final String TAG = "ByteTransferPipe"; 28 29 private ByteArrayOutputStream mOutputStream; 30 31 public ByteTransferPipe() throws IOException { 32 super(); 33 } 34 35 public ByteTransferPipe(String bufferPrefix) throws IOException { 36 super(bufferPrefix, "ByteTransferPipe"); 37 } 38 39 @Override 40 protected OutputStream getNewOutputStream() { 41 mOutputStream = new ByteArrayOutputStream(); 42 return mOutputStream; 43 } 44 45 public byte[] get() throws IOException { 46 go(null); 47 return mOutputStream.toByteArray(); 48 } 49 } 50
