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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2005-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.xml.txw2.output;

import java.io.IOException;
import java.io.Writer;

/**
 * Escape everything above the US-ASCII code range.
 * A fallback position.
 * 
 * Works with any JDK, any encoding.
 * 
 * @since 1.0.1
 * @author
 *     Kohsuke Kawaguchi ([email protected])
 */
public class DumbEscapeHandler implements CharacterEscapeHandler {
    
    private DumbEscapeHandler() {}  // no instanciation please
    
    public static final CharacterEscapeHandler theInstance = new DumbEscapeHandler();
    
    public void escape(char[] ch, int start, int length, boolean isAttVal, Writer out) throws IOException {
        int limit = start+length;
        for (int i = start; i < limit; i++) {
            switch (ch[i]) {
            case '&':
                out.write("&");
                break;
            case '<':
                out.write("<");
                break;
            case '>':
                out.write(">");
                break;
            case '\"':
                if (isAttVal) {
                    out.write(""");
                } else {
                    out.write('\"');
                }
                break;
            default:
                if (ch[i] > '\u007f') {
                    out.write("&#");
                    out.write(Integer.toString(ch[i]));
                    out.write(';');
                } else {
                    out.write(ch[i]);
                }
            }
        }
    }

}