content: /*
   * Copyright (C) 2017 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.internal.os;
  
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.OutputStream;
  
  /**
   * Helper class to get byte data through a pipe from a client app. Also {@see TransferPipe}.
   */
  public class ByteTransferPipe extends TransferPipe {
      static final String TAG = "ByteTransferPipe";
  
      private ByteArrayOutputStream mOutputStream;
  
      public ByteTransferPipe() throws IOException {
          super();
      }
  
      public ByteTransferPipe(String bufferPrefix) throws IOException {
          super(bufferPrefix, "ByteTransferPipe");
      }
  
      @Override
      protected OutputStream getNewOutputStream() {
          mOutputStream = new ByteArrayOutputStream();
          return mOutputStream;
      }
  
      public byte[] get() throws IOException {
          go(null);
          return mOutputStream.toByteArray();
      }
  }
  