1 /*
2 * Copyright (C) 2009-2010, Google Inc. and others
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Distribution License v. 1.0 which is available at
6 * https://www.eclipse.org/org/documents/edl-v10.php.
7 *
8 * SPDX-License-Identifier: BSD-3-Clause
9 */
10
11 package org.eclipse.jgit.util.io;
12
13 import java.io.IOException;
14 import java.io.OutputStream;
15
16 import org.eclipse.jgit.internal.JGitText;
17
18 /**
19 * An OutputStream which always throws IllegalStateExeption during write.
20 */
21 public final class DisabledOutputStream extends OutputStream {
22 /** The canonical instance which always throws IllegalStateException. */
23 public static final DisabledOutputStream INSTANCE = new DisabledOutputStream();
24
25 private DisabledOutputStream() {
26 // Do nothing, but we want to hide our constructor to prevent
27 // more than one instance from being created.
28 }
29
30 /** {@inheritDoc} */
31 @Override
32 public void write(int b) throws IOException {
33 // We shouldn't be writing output at this stage, there
34 // is nobody listening to us.
35 //
36 throw new IllegalStateException(JGitText.get().writingNotPermitted);
37 }
38 }