1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.mina.integration.beans;
21
22 import java.beans.PropertyEditor;
23 import java.util.regex.Pattern;
24
25 /**
26 * A {@link PropertyEditor} which converts a {@link String} into
27 * a {@link Character} and vice versa.
28 *
29 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
30 */
31 public class CharacterEditor extends AbstractPropertyEditor {
32 private static final Pattern UNICODE = Pattern.compile("\\\\[uU][0-9a-fA-F]+");
33
34 @Override
35 protected String toText(Object value) {
36 return String.valueOf(value);
37 }
38
39 @Override
40 protected Object toValue(String text) throws IllegalArgumentException {
41 if (text.length() == 0) {
42 return Character.valueOf(Character.MIN_VALUE);
43 }
44
45 if (UNICODE.matcher(text).matches()) {
46 return Character.valueOf((char) Integer.parseInt(text.substring(2)));
47 }
48
49 if (text.length() != 1) {
50 throw new IllegalArgumentException("Too many characters: " + text);
51 }
52
53 return Character.valueOf(text.charAt(0));
54 }
55 }