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.commons.logging.Log;
023    import org.apache.commons.logging.LogFactory;
024    import org.apache.james.mime4j.field.address.AddressList;
025    import org.apache.james.mime4j.field.address.Mailbox;
026    import org.apache.james.mime4j.field.address.MailboxList;
027    import org.apache.james.mime4j.field.address.parser.ParseException;
028    import org.apache.james.mime4j.util.ByteSequence;
029    
030    /**
031     * Mailbox field such as <code>Sender</code> or <code>Resent-Sender</code>.
032     */
033    public class MailboxField extends AbstractField {
034        private static Log log = LogFactory.getLog(MailboxField.class);
035    
036        private boolean parsed = false;
037    
038        private Mailbox mailbox;
039        private ParseException parseException;
040    
041        MailboxField(final String name, final String body, final ByteSequence raw) {
042            super(name, body, raw);
043        }
044    
045        public Mailbox getMailbox() {
046            if (!parsed)
047                parse();
048    
049            return mailbox;
050        }
051    
052        @Override
053        public ParseException getParseException() {
054            if (!parsed)
055                parse();
056    
057            return parseException;
058        }
059    
060        private void parse() {
061            String body = getBody();
062    
063            try {
064                MailboxList mailboxList = AddressList.parse(body).flatten();
065                if (mailboxList.size() > 0) {
066                    mailbox = mailboxList.get(0);
067                }
068            } catch (ParseException e) {
069                if (log.isDebugEnabled()) {
070                    log.debug("Parsing value '" + body + "': " + e.getMessage());
071                }
072                parseException = e;
073            }
074    
075            parsed = true;
076        }
077    
078        static final FieldParser PARSER = new FieldParser() {
079            public ParsedField parse(final String name, final String body,
080                    final ByteSequence raw) {
081                return new MailboxField(name, body, raw);
082            }
083        };
084    }