| /* |
| * 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 final static 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(); |
| } |
| } |