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.browser; 17 18 import java.io.ByteArrayOutputStream; 19 import java.io.IOException; 20 import java.io.OutputStream; 21 22 public class SnapshotByteArrayOutputStream extends OutputStream { 23 24 // Maximum size, this needs to be small enough such that an entire row 25 // can fit in CursorWindow's 2MB limit 26 private static final int MAX_SIZE = 1700000; 27 private ByteArrayOutputStream mStream; 28 29 public SnapshotByteArrayOutputStream() { 30 mStream = new ByteArrayOutputStream(MAX_SIZE); 31 } 32 33 @Override 34 public synchronized void write(int oneByte) throws IOException { 35 checkError(1); 36 mStream.write(oneByte); 37 } 38 39 @Override 40 public void write(byte[] buffer, int offset, int count) throws IOException { 41 checkError(count); 42 mStream.write(buffer, offset, count); 43 } 44 45 private void checkError(int expandBy) throws IOException { 46 if ((size() + expandBy) > MAX_SIZE) { 47 throw new IOException("Exceeded max size!"); 48 } 49 } 50 51 public int size() { 52 return mStream.size(); 53 } 54 55 public byte[] toByteArray() { 56 return mStream.toByteArray(); 57 } 58 59 } 60
