| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.commons.compress.utils; |
| |
| import java.io.FilterOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| /** |
| * Stream that tracks the number of bytes read. |
| * @since 1.3 |
| * @NotThreadSafe |
| */ |
| public class CountingOutputStream extends FilterOutputStream { |
| private long bytesWritten; |
| |
| public CountingOutputStream(final OutputStream out) { |
| super(out); |
| } |
| |
| @Override |
| public void write(final int b) throws IOException { |
| out.write(b); |
| count(1); |
| } |
| @Override |
| public void write(final byte[] b) throws IOException { |
| write(b, 0, b.length); |
| } |
| @Override |
| public void write(final byte[] b, final int off, final int len) throws IOException { |
| out.write(b, off, len); |
| count(len); |
| } |
| |
| /** |
| * Increments the counter of already written bytes. |
| * Doesn't increment if the EOF has been hit (written == -1) |
| * |
| * @param written the number of bytes written |
| */ |
| protected void count(final long written) { |
| if (written != -1) { |
| bytesWritten += written; |
| } |
| } |
| |
| /** |
| * Returns the current number of bytes written to this stream. |
| * @return the number of written bytes |
| */ |
| public long getBytesWritten() { |
| return bytesWritten; |
| } |
| } |