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 /** 034 * Does nothing. 035 */ 036 @Override 037 public void close() { 038 // do not close delegate 039 } 040 041 @Override 042 public void flush() throws IOException { 043 delegate.flush(); 044 } 045 046 @Override 047 public void write(final byte[] b) throws IOException { 048 delegate.write(b); 049 } 050 051 @Override 052 public void write(final byte[] b, final int off, final int len) throws IOException { 053 delegate.write(b, off, len); 054 } 055 056 @Override 057 public void write(final int b) throws IOException { 058 delegate.write(b); 059 } 060}