Java String Escape escapeRegex(String regex)

Description

escape Regex

License

Apache License

Declaration

public static String escapeRegex(String regex) 

Method Source Code

//package com.java2s;
/*/*from  w ww  . java 2  s. c o m*/
 * 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.
 */

import java.util.Arrays;
import java.util.List;

public class Main {
    private static final List<Character> regexSpecialChars = Arrays
            .asList(new Character[] { '[', ']', '.', '(', ')', '{', '}', ',', '+', '$', '^', '-' });

    public static String escapeRegex(String regex) {
        StringBuilder newString = new StringBuilder();
        char[] chars = regex.toCharArray();
        for (char c : chars) {
            if (regexSpecialChars.contains(Character.valueOf(c))) {
                newString.append("\\");
            }
            newString.append(c);
        }
        return newString.toString();
    }
}

Related

1. escapeHTMLTags(String in)
2. escapeInstanceIdentifier(String instanceIdentifier)
3. escapeJavaString(String str)
4. escapeJavaStyleString(StringBuilder out, String str, boolean escapeSingleQuote, boolean escapeForwardSlash)
5. escapeQuotes(String string)
6. escapeRegexChars(String str, char... ignores)
7. escapeRegexp(final String str)
8. escapeRegexpSymbol(String expr)
9. escapeReservedWord(String input)