1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache license, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the license for the specific language governing permissions and
15 * limitations under the license.
16 */
17 package org.apache.logging.log4j.core.util;
18
19 import java.io.IOException;
20 import java.io.OutputStream;
21
22 /**
23 * A delegating OutputStream that does not close its delegate.
24 */
25 public class CloseShieldOutputStream extends OutputStream {
26
27 private final OutputStream delegate;
28
29 public CloseShieldOutputStream(final OutputStream delegate) {
30 this.delegate = delegate;
31 }
32
33 /**
34 * Does nothing.
35 */
36 @Override
37 public void close() {
38 // do not close delegate
39 }
40
41 @Override
42 public void flush() throws IOException {
43 delegate.flush();
44 }
45
46 @Override
47 public void write(final byte[] b) throws IOException {
48 delegate.write(b);
49 }
50
51 @Override
52 public void write(final byte[] b, final int off, final int len) throws IOException {
53 delegate.write(b, off, len);
54 }
55
56 @Override
57 public void write(final int b) throws IOException {
58 delegate.write(b);
59 }
60 }