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 *
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015 * KIND, either express or implied. See the License for the *
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019
020 package org.apache.james.mime4j.field;
021
022 import org.apache.james.mime4j.codec.DecodeMonitor;
023 import org.apache.james.mime4j.codec.DecoderUtil;
024 import org.apache.james.mime4j.dom.FieldParser;
025 import org.apache.james.mime4j.dom.field.UnstructuredField;
026 import org.apache.james.mime4j.stream.Field;
027
028 /**
029 * Simple unstructured field such as <code>Subject</code>.
030 */
031 public class UnstructuredFieldImpl extends AbstractField implements UnstructuredField {
032 private boolean parsed = false;
033
034 private String value;
035
036 UnstructuredFieldImpl(Field rawField, DecodeMonitor monitor) {
037 super(rawField, monitor);
038 }
039
040 /**
041 * @see org.apache.james.mime4j.dom.field.UnstructuredField#getValue()
042 */
043 public String getValue() {
044 if (!parsed)
045 parse();
046
047 return value;
048 }
049
050 private void parse() {
051 String body = getBody();
052
053 value = DecoderUtil.decodeEncodedWords(body, monitor);
054
055 parsed = true;
056 }
057
058 public static final FieldParser<UnstructuredField> PARSER = new FieldParser<UnstructuredField>() {
059
060 public UnstructuredField parse(final Field rawField, final DecodeMonitor monitor) {
061 return new UnstructuredFieldImpl(rawField, monitor);
062 }
063
064 };
065
066 }