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
17package com.android.emailcommon.utility;
18
19import java.io.IOException;
20import 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 */
26public 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