001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache license, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the license for the specific language governing permissions and 015 * limitations under the license. 016 */ 017package org.apache.logging.log4j.core.util; 018 019import java.io.IOException; 020import java.io.OutputStream; 021 022/** 023 * A delegating OutputStream that does not close its delegate. 024 */ 025public class CloseShieldOutputStream extends OutputStream { 026 027 private final OutputStream delegate; 028 029 public CloseShieldOutputStream(final OutputStream delegate) { 030 this.delegate = delegate; 031 } 032 033 @Override 034 public void close() { 035 // do not close delegate 036 } 037 038 @Override 039 public void flush() throws IOException { 040 delegate.flush(); 041 } 042 043 @Override 044 public void write(final byte[] b) throws IOException { 045 delegate.write(b); 046 } 047 048 @Override 049 public void write(final byte[] b, final int off, final int len) throws IOException { 050 delegate.write(b, off, len); 051 } 052 053 @Override 054 public void write(final int b) throws IOException { 055 delegate.write(b); 056 } 057}