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.field;
021    
022    import org.apache.james.mime4j.codec.DecoderUtil;
023    import org.apache.james.mime4j.util.ByteSequence;
024    
025    /**
026     * Simple unstructured field such as <code>Subject</code>.
027     */
028    public class UnstructuredField extends AbstractField {
029        private boolean parsed = false;
030    
031        private String value;
032    
033        UnstructuredField(String name, String body, ByteSequence raw) {
034            super(name, body, raw);
035        }
036    
037        public String getValue() {
038            if (!parsed)
039                parse();
040    
041            return value;
042        }
043    
044        private void parse() {
045            String body = getBody();
046    
047            value = DecoderUtil.decodeEncodedWords(body);
048    
049            parsed = true;
050        }
051    
052        static final FieldParser PARSER = new FieldParser() {
053            public ParsedField parse(final String name, final String body,
054                    final ByteSequence raw) {
055                return new UnstructuredField(name, body, raw);
056            }
057        };
058    }