1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.pdfbox.encoding.conversion;
18
19 import java.util.Iterator;
20 import java.util.HashMap;
21
22 /**
23 * EncodingConversionManager maintains relationship between PDF encoding name
24 * and respective EncodingConverter instance. Those PDF encoding name like
25 * GBK-EUC-H should be converted to java charset name before constructing a
26 * java string instance
27 *
28 * @author Pin Xue (http://www.pinxue.net), Holly Lee (holly.lee (at) gmail.com)
29 * @version $Revision: 1.0 $
30 */
31 public class EncodingConversionManager
32 {
33 /**
34 * Mapping from PDF encoding name to EncodingConverter instance.
35 */
36 private static HashMap encodingMap = new HashMap();
37
38 private EncodingConversionManager()
39 {
40 }
41
42 /**
43 * Initialize the encodingMap before anything calls us.
44 */
45 static {
46
47 // Add CJK encodings to map
48 Iterator it = CJKEncodings.getEncodingIterator();
49
50 while ( it.hasNext() )
51 {
52 String encodingName = (String)(it.next());
53 encodingMap.put(encodingName, new CJKConverter(encodingName));
54 }
55 // If there is any other encoding conversions, please add it here.
56
57 }
58
59 /**
60 * Get converter from given encoding name. If no converted defined,
61 * a null is returned.
62 *
63 * @param encoding search for a converter for the given encoding name
64 * @return the converter for the given encoding name
65 */
66 public static final EncodingConverter getConverter(String encoding)
67 {
68 return (EncodingConverter)(encodingMap.get(encoding));
69 }
70
71
72 }