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.Writer; 21 22 public class CloseShieldWriter extends Writer { 23 24 private final Writer delegate; 25 26 public CloseShieldWriter(final Writer delegate) { 27 this.delegate = delegate; 28 } 29 30 @Override 31 public void close() throws IOException { 32 // do not close delegate 33 } 34 35 @Override 36 public void flush() throws IOException { 37 delegate.flush(); 38 39 } 40 41 @Override 42 public void write(final char[] cbuf, final int off, final int len) throws IOException { 43 delegate.write(cbuf, off, len); 44 } 45 46 }