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
17package com.android.internal.os;
18
19import java.io.ByteArrayOutputStream;
20import java.io.IOException;
21import java.io.OutputStream;
22
23/**
24 * Helper class to get byte data through a pipe from a client app. Also {@see TransferPipe}.
25 */
26public 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