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
020package org.apache.james.mime4j.field;
021
022import org.apache.james.mime4j.codec.DecodeMonitor;
023import org.apache.james.mime4j.dom.FieldParser;
024import org.apache.james.mime4j.dom.address.Mailbox;
025import org.apache.james.mime4j.dom.field.MailboxField;
026import org.apache.james.mime4j.field.address.LenientAddressBuilder;
027import org.apache.james.mime4j.stream.Field;
028import org.apache.james.mime4j.stream.ParserCursor;
029import org.apache.james.mime4j.stream.RawField;
030import org.apache.james.mime4j.util.ByteSequence;
031import org.apache.james.mime4j.util.ContentUtil;
032
033/**
034 * Mailbox field such as <code>Sender</code> or <code>Resent-Sender</code>.
035 */
036public 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}