001 /****************************************************************
002 * Licensed to the Apache Software Foundation (ASF) under one *
003 * or more contributor license agreements. See the NOTICE file *
004 * distributed with this work for additional information *
005 * regarding copyright ownership. The ASF licenses this file *
006 * to you under the Apache License, Version 2.0 (the *
007 * "License"); you may not use this file except in compliance *
008 * with the License. You may obtain a copy of the License at *
009 * *
010 * http://www.apache.org/licenses/LICENSE-2.0 *
011 * *
012 * Unless required by applicable law or agreed to in writing, *
013 * software distributed under the License is distributed on an *
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
015 * KIND, either express or implied. See the License for the *
016 * specific language governing permissions and limitations *
017 * under the License. *
018 ****************************************************************/
019
020 package org.apache.james.mime4j.codec;
021
022 /**
023 * This class is used to drive how decoder/parser should deal with malformed
024 * and unexpected data.
025 *
026 * 2 basic implementations are provided:
027 * <ul>
028 * <li>{@link #STRICT} return "true" on any occurrence</li>
029 * <li>{@link #SILENT} ignores any problem</li>
030 * </ul>
031 */
032 public class DecodeMonitor {
033
034 /**
035 * The STRICT monitor throws an exception on every event.
036 */
037 public static final DecodeMonitor STRICT = new DecodeMonitor() {
038
039 @Override
040 public boolean warn(String error, String dropDesc) {
041 return true;
042 }
043
044 @Override
045 public boolean isListening() {
046 return true;
047 }
048 };
049
050 /**
051 * The SILENT monitor ignore requests.
052 */
053 public static final DecodeMonitor SILENT = new DecodeMonitor();
054
055 public boolean warn(String error, String dropDesc) {
056 return false;
057 }
058
059 public boolean isListening() {
060 return false;
061 }
062
063 }