93 lines
3.3 KiB
Java
93 lines
3.3 KiB
Java
/*
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* Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.beans.decoder;
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/**
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* This class is intended to handle <char> element.
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* This element specifies {@code char} values.
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* The class {@link Character} is used as wrapper for these values.
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* The result value is created from text of the body of this element.
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* The body parsing is described in the class {@link StringElementHandler}.
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* For example:<pre>
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* <char>X</char></pre>
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* which is equivalent to {@code Character.valueOf('X')} in Java code.
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* <p>The following attributes are supported:
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* <dl>
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* <dt>code
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* <dd>this attribute specifies character code
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* <dt>id
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* <dd>the identifier of the variable that is intended to store the result
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* </dl>
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* The {@code code} attribute can be used for characters
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* that are illegal in XML document, for example:<pre>
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* <char code="0"/></pre>
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*
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* @since 1.7
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*
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* @author Sergey A. Malenkov
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*/
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final class CharElementHandler extends StringElementHandler {
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/**
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* Parses attributes of the element.
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* The following attributes are supported:
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* <dl>
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* <dt>code
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* <dd>this attribute specifies character code
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* <dt>id
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* <dd>the identifier of the variable that is intended to store the result
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* </dl>
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*
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* @param name the attribute name
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* @param value the attribute value
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*/
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@Override
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public void addAttribute(String name, String value) {
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if (name.equals("code")) { // NON-NLS: the attribute name
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int code = Integer.decode(value);
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for (char ch : Character.toChars(code)) {
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addCharacter(ch);
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}
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} else {
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super.addAttribute(name, value);
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}
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}
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/**
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* Creates {@code char} value from
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* the text of the body of this element.
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*
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* @param argument the text of the body
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* @return evaluated {@code char} value
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*/
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@Override
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public Object getValue(String argument) {
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if (argument.length() != 1) {
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throw new IllegalArgumentException("Wrong characters count");
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}
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return Character.valueOf(argument.charAt(0));
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}
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}
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