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| 1 | /* | ||
| 2 | * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | package com.sun.beans.decoder; | ||
| 26 | |||
| 27 | /** | ||
| 28 | * This class is intended to handle <char> element. | ||
| 29 | * This element specifies {@code char} values. | ||
| 30 | * The class {@link Character} is used as wrapper for these values. | ||
| 31 | * The result value is created from text of the body of this element. | ||
| 32 | * The body parsing is described in the class {@link StringElementHandler}. | ||
| 33 | * For example:<pre> | ||
| 34 | * <char>X</char></pre> | ||
| 35 | * which is equivalent to {@code Character.valueOf('X')} in Java code. | ||
| 36 | * <p>The following atributes are supported: | ||
| 37 | * <dl> | ||
| 38 | * <dt>code | ||
| 39 | * <dd>this attribute specifies character code | ||
| 40 | * <dt>id | ||
| 41 | * <dd>the identifier of the variable that is intended to store the result | ||
| 42 | * </dl> | ||
| 43 | * The {@code code} attribute can be used for characters | ||
| 44 | * that are illegal in XML document, for example:<pre> | ||
| 45 | * <char code="0"/></pre> | ||
| 46 | * | ||
| 47 | * @since 1.7 | ||
| 48 | * | ||
| 49 | * @author Sergey A. Malenkov | ||
| 50 | */ | ||
| 51 | final class CharElementHandler extends StringElementHandler { | ||
| 52 | |||
| 53 | /** | ||
| 54 | * Parses attributes of the element. | ||
| 55 | * The following atributes are supported: | ||
| 56 | * <dl> | ||
| 57 | * <dt>code | ||
| 58 | * <dd>this attribute specifies character code | ||
| 59 | * <dt>id | ||
| 60 | * <dd>the identifier of the variable that is intended to store the result | ||
| 61 | * </dl> | ||
| 62 | * | ||
| 63 | * @param name the attribute name | ||
| 64 | * @param value the attribute value | ||
| 65 | */ | ||
| 66 | @Override | ||
| 67 | public void addAttribute(String name, String value) { | ||
| 68 | if (name.equals("code")) { // NON-NLS: the attribute name | ||
| 69 | int code = Integer.decode(value); | ||
| 70 | for (char ch : Character.toChars(code)) { | ||
| 71 | addCharacter(ch); | ||
| 72 | } | ||
| 73 | } else { | ||
| 74 | super.addAttribute(name, value); | ||
| 75 | } | ||
| 76 | } | ||
| 77 | |||
| 78 | /** | ||
| 79 | * Creates {@code char} value from | ||
| 80 | * the text of the body of this element. | ||
| 81 | * | ||
| 82 | * @param argument the text of the body | ||
| 83 | * @return evaluated {@code char} value | ||
| 84 | */ | ||
| 85 | @Override | ||
| 86 | public Object getValue(String argument) { | ||
| 87 | if (argument.length() != 1) { | ||
| 88 | throw new IllegalArgumentException("Wrong characters count"); | ||
| 89 | } | ||
| 90 | return Character.valueOf(argument.charAt(0)); | ||
| 91 | } | ||
| 92 | } | ||