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.field.ContentMD5Field;
025import org.apache.james.mime4j.stream.Field;
026
027/**
028 * Represents a <code>Content-MD5</code> field.
029 */
030public class ContentMD5FieldImpl extends AbstractField implements ContentMD5Field {
031
032    private boolean parsed = false;
033    private String md5raw;
034
035    ContentMD5FieldImpl(Field rawField, DecodeMonitor monitor) {
036        super(rawField, monitor);
037    }
038
039    private void parse() {
040        parsed = true;
041        String body = getBody();
042        if (body != null) {
043            md5raw = body.trim();
044        } else {
045            md5raw = null;
046        }
047    }
048
049    public String getMD5Raw() {
050        if (!parsed) {
051            parse();
052        }
053        return md5raw;
054    }
055
056    public static final FieldParser<ContentMD5Field> PARSER = new FieldParser<ContentMD5Field>() {
057
058        public ContentMD5Field parse(final Field rawField, final DecodeMonitor monitor) {
059            return new ContentMD5FieldImpl(rawField, monitor);
060        }
061
062    };
063
064}
065