1 /* 2 * Copyright (C) 2011 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 package com.android.tradefed.device; 17 18 import com.android.ddmlib.IShellOutputReceiver; 19 import com.android.tradefed.util.ByteArrayList; 20 21 /** 22 * A {@link IShellOutputReceiver} which collects the whole shell output into a {@code byte[]}. 23 * This is useful for shell commands that will produce a significant amount of output, where the 24 * 2x {@link String} memory overhead will be significant. 25 */ 26 public class CollectingByteOutputReceiver implements IShellOutputReceiver { 27 private ByteArrayList mData = new ByteArrayList(); 28 private boolean mIsCanceled = false; 29 30 public byte[] getOutput() { 31 return mData.getContents(); 32 } 33 34 /** 35 * {@inheritDoc} 36 */ 37 @Override 38 public boolean isCancelled() { 39 return mIsCanceled; 40 } 41 42 /** 43 * Cancel the output collection 44 */ 45 public void cancel() { 46 mIsCanceled = true; 47 clear(); 48 } 49 50 /** 51 * {@inheritDoc} 52 */ 53 @Override 54 public void addOutput(byte[] data, int offset, int length) { 55 if (!isCancelled()) { 56 mData.addAll(data, offset, length); 57 } 58 } 59 60 /** 61 * {@inheritDoc} 62 */ 63 @Override 64 public void flush() { 65 // ignore 66 } 67 68 /** 69 * Try to unref everything that we can 70 */ 71 public void clear() { 72 mData.clear(); 73 } 74 } 75
