org.apache.lucene.search.highlight.SimpleHTMLEncoder Maven / Gradle / Ivy
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.lucene.search.highlight;
/** Simple {@link Encoder} implementation to escape text for HTML output */
public class SimpleHTMLEncoder implements Encoder {
public SimpleHTMLEncoder() {}
@Override
public String encodeText(String originalText) {
return htmlEncode(originalText);
}
/** Encode string into HTML */
public static final String htmlEncode(String plainText) {
if (plainText == null || plainText.length() == 0) {
return "";
}
StringBuilder result = new StringBuilder(plainText.length());
for (int index = 0; index < plainText.length(); index++) {
char ch = plainText.charAt(index);
switch (ch) {
case '"':
result.append(""");
break;
case '&':
result.append("&");
break;
case '<':
result.append("<");
break;
case '>':
result.append(">");
break;
case '\'':
result.append("'");
break;
case '/':
result.append("/");
break;
default:
result.append(ch);
}
}
return result.toString();
}
}