| /* |
| * Copyright (c) 1997, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0, which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| package org.glassfish.jaxb.core.marshaller; |
| |
| import java.io.IOException; |
| import java.io.Writer; |
| |
| /** |
| * Performs no character escaping. Usable only when the output encoding |
| * is UTF, but this handler gives the maximum performance. |
| * |
| * @author |
| * Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com) |
| */ |
| public class MinimumEscapeHandler implements CharacterEscapeHandler { |
| |
| private MinimumEscapeHandler() {} // no instanciation please |
| |
| public static final CharacterEscapeHandler theInstance = new MinimumEscapeHandler(); |
| |
| @Override |
| public void escape(char[] ch, int start, int length, boolean isAttVal, Writer out) throws IOException { |
| // avoid calling the Writerwrite method too much by assuming |
| // that the escaping occurs rarely. |
| // profiling revealed that this is faster than the naive code. |
| int limit = start+length; |
| for (int i = start; i < limit; i++) { |
| char c = ch[i]; |
| if (c == '&' || c == '<' || c == '>' || c == '\r' || (c == '\n' && isAttVal) || (c == '\"' && isAttVal)) { |
| if (i != start) |
| out.write(ch, start, i - start); |
| start = i + 1; |
| switch (ch[i]) { |
| case '&': |
| out.write("&"); |
| break; |
| case '<': |
| out.write("<"); |
| break; |
| case '>': |
| out.write(">"); |
| break; |
| case '\"': |
| out.write("""); |
| break; |
| case '\n': |
| case '\r': |
| out.write("&#"); |
| out.write(Integer.toString(c)); |
| out.write(';'); |
| break; |
| default: |
| throw new IllegalArgumentException("Cannot escape: '" + c + "'"); |
| } |
| } |
| } |
| |
| if( start!=limit ) |
| out.write(ch,start,limit-start); |
| } |
| |
| } |