java/com/android/voicemail/impl/mail/utility/CountingOutputStream.java


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/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.android.voicemail.impl.mail.utility;

import java.io.IOException;
import java.io.OutputStream;

/**
 * A simple pass-thru OutputStream that also counts how many bytes are written to it and makes that
 * count available to callers.
 */
public class CountingOutputStream extends OutputStream {
  private long count;
  private final OutputStream outputStream;

  public CountingOutputStream(OutputStream outputStream) {
    this.outputStream = outputStream;
  }

  public long getCount() {
    return count;
  }

  @Override
  public void write(byte[] buffer, int offset, int count) throws IOException {
    outputStream.write(buffer, offset, count);
    this.count += count;
  }

  @Override
  public void write(int oneByte) throws IOException {
    outputStream.write(oneByte);
    count++;
  }
}