org.glassfish.jaxb.core.marshaller.MinimumEscapeHandler Maven / Gradle / Ivy
/*
* 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 ([email protected])
*/
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);
}
}