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 }