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.Writer; 021 022public class CloseShieldWriter extends Writer { 023 024 private final Writer delegate; 025 026 public CloseShieldWriter(final Writer delegate) { 027 this.delegate = delegate; 028 } 029 030 @Override 031 public void close() throws IOException { 032 // do not close delegate 033 } 034 035 @Override 036 public void flush() throws IOException { 037 delegate.flush(); 038 039 } 040 041 @Override 042 public void write(final char[] cbuf, final int off, final int len) throws IOException { 043 delegate.write(cbuf, off, len); 044 } 045 046}