1 /* 2 * Copyright (C) 2008 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.emailcommon.utility; 18 19 import java.io.IOException; 20 import java.io.OutputStream; 21 22 /** 23 * A simple pass-thru OutputStream that also counts how many bytes are written to it and 24 * makes that count available to callers. 25 */ 26 public class CountingOutputStream extends OutputStream { 27 private long mCount; 28 private final OutputStream mOutputStream; 29 30 public CountingOutputStream(OutputStream outputStream) { 31 mOutputStream = outputStream; 32 } 33 34 public long getCount() { 35 return mCount; 36 } 37 38 @Override 39 public void write(byte[] buffer, int offset, int count) throws IOException { 40 mOutputStream.write(buffer, offset, count); 41 mCount += count; 42 } 43 44 @Override 45 public void write(int oneByte) throws IOException { 46 mOutputStream.write(oneByte); 47 mCount++; 48 } 49 } 50