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 java.util.Collections;
023    
024    import org.apache.james.mime4j.codec.DecodeMonitor;
025    import org.apache.james.mime4j.dom.FieldParser;
026    import org.apache.james.mime4j.dom.address.AddressList;
027    import org.apache.james.mime4j.dom.address.Mailbox;
028    import org.apache.james.mime4j.dom.field.AddressListField;
029    import org.apache.james.mime4j.field.address.LenientAddressBuilder;
030    import org.apache.james.mime4j.stream.Field;
031    import org.apache.james.mime4j.stream.ParserCursor;
032    import org.apache.james.mime4j.stream.RawField;
033    import org.apache.james.mime4j.util.ByteSequence;
034    import org.apache.james.mime4j.util.ContentUtil;
035    
036    /**
037     * Address list field such as <code>To</code> or <code>Reply-To</code>.
038     */
039    public class AddressListFieldLenientImpl extends AbstractField implements AddressListField {
040    
041        private boolean parsed = false;
042    
043        private AddressList addressList;
044    
045        AddressListFieldLenientImpl(final Field rawField, final DecodeMonitor monitor) {
046            super(rawField, monitor);
047        }
048    
049        public AddressList getAddressList() {
050            if (!parsed)
051                parse();
052    
053            return addressList;
054        }
055    
056        private void parse() {
057            parsed = true;
058            RawField f = getRawField();
059            ByteSequence buf = f.getRaw();
060            int pos = f.getDelimiterIdx() + 1;
061            if (buf == null) {
062                String body = f.getBody();
063                if (body == null) {
064                    addressList = new AddressList(Collections.<Mailbox>emptyList(), true);
065                    return;
066                }
067                buf = ContentUtil.encode(body);
068                pos = 0;
069            }
070            ParserCursor cursor = new ParserCursor(pos, buf.length());
071            addressList = LenientAddressBuilder.DEFAULT.parseAddressList(buf, cursor);
072        }
073    
074        public static final FieldParser<AddressListField> PARSER = new FieldParser<AddressListField>() {
075    
076            public AddressListField parse(final Field rawField, final DecodeMonitor monitor) {
077                return new AddressListFieldLenientImpl(rawField, monitor);
078            }
079    
080        };
081    
082    }