1 /*
2  *  Copyright 2006 the mime4j project
3  *
4  *  Licensed under the Apache License, Version 2.0 (the "License");
5  *  you may not use this file except in compliance with the License.
6  *  You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  *  Unless required by applicable law or agreed to in writing, software
11  *  distributed under the License is distributed on an "AS IS" BASIS,
12  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  *  See the License for the specific language governing permissions and
14  *  limitations under the License.
15  */
16 package org.apache.james.mime4j.field;
17 
18 import java.util.HashMap;
19 import java.util.Map;
20 
21 public class DelegatingFieldParser implements FieldParser {
22 
23     private Map<String, FieldParser> parsers = new HashMap<String, FieldParser>();
24     private FieldParser defaultParser = new UnstructuredField.Parser();
25 
26     /**
27      * Sets the parser used for the field named <code>name</code>.
28      * @param name the name of the field
29      * @param parser the parser for fields named <code>name</code>
30      */
setFieldParser(final String name, final FieldParser parser)31     public void setFieldParser(final String name, final FieldParser parser) {
32         parsers.put(name.toLowerCase(), parser);
33     }
34 
getParser(final String name)35     public FieldParser getParser(final String name) {
36         final FieldParser field = parsers.get(name.toLowerCase());
37         if(field==null) {
38             return defaultParser;
39         }
40         return field;
41     }
42 
parse(final String name, final String body, final String raw)43     public Field parse(final String name, final String body, final String raw) {
44         final FieldParser parser = getParser(name);
45         return parser.parse(name, body, raw);
46     }
47 }
48