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.DecodeMonitor;
023    import org.apache.james.mime4j.dom.FieldParser;
024    import org.apache.james.mime4j.dom.address.Mailbox;
025    import org.apache.james.mime4j.dom.field.MailboxField;
026    import org.apache.james.mime4j.field.address.LenientAddressBuilder;
027    import org.apache.james.mime4j.stream.Field;
028    import org.apache.james.mime4j.stream.ParserCursor;
029    import org.apache.james.mime4j.stream.RawField;
030    import org.apache.james.mime4j.util.ByteSequence;
031    import org.apache.james.mime4j.util.ContentUtil;
032    
033    /**
034     * Mailbox field such as <code>Sender</code> or <code>Resent-Sender</code>.
035     */
036    public class MailboxFieldLenientImpl extends AbstractField implements MailboxField {
037    
038        private boolean parsed = false;
039    
040        private Mailbox mailbox;
041    
042        MailboxFieldLenientImpl(final Field rawField, final DecodeMonitor monitor) {
043            super(rawField, monitor);
044        }
045    
046        public Mailbox getMailbox() {
047            if (!parsed) {
048                parse();
049            }
050            return mailbox;
051        }
052    
053        private void parse() {
054            parsed = true;
055            RawField f = getRawField();
056            ByteSequence buf = f.getRaw();
057            int pos = f.getDelimiterIdx() + 1;
058            if (buf == null) {
059                String body = f.getBody();
060                if (body == null) {
061                    return;
062                }
063                buf = ContentUtil.encode(body);
064                pos = 0;
065            }
066            ParserCursor cursor = new ParserCursor(pos, buf.length());
067            mailbox = LenientAddressBuilder.DEFAULT.parseMailbox(buf, cursor, null);
068        }
069    
070        public static final FieldParser<MailboxField> PARSER = new FieldParser<MailboxField>() {
071    
072            public MailboxField parse(final Field rawField, final DecodeMonitor monitor) {
073                return new MailboxFieldLenientImpl(rawField, monitor);
074            }
075    
076        };
077    }