1/*
2 * Copyright (C) 2015 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 */
16package com.android.phone.common.mail.utility;
17
18import java.io.IOException;
19import java.io.OutputStream;
20
21/**
22 * A simple pass-thru OutputStream that also counts how many bytes are written to it and
23 * makes that count available to callers.
24 */
25public class CountingOutputStream extends OutputStream {
26    private long mCount;
27    private final OutputStream mOutputStream;
28
29    public CountingOutputStream(OutputStream outputStream) {
30        mOutputStream = outputStream;
31    }
32
33    public long getCount() {
34        return mCount;
35    }
36
37    @Override
38    public void write(byte[] buffer, int offset, int count) throws IOException {
39        mOutputStream.write(buffer, offset, count);
40        mCount += count;
41    }
42
43    @Override
44    public void write(int oneByte) throws IOException {
45        mOutputStream.write(oneByte);
46        mCount++;
47    }
48}