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 The Apache MINA Project (dev@mina.apache.org) 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 }