Java Regex Create toRegex(String wildcard)

Description

convert wild card to regular expression

License

Apache License

Declaration

public static String toRegex(String wildcard) 

Method Source Code

//package com.java2s;
/*/*from   w  w  w  .  ja v  a 2  s  .  c o m*/
 * Copyright 2002-2012 the original author or authors.
 *
 * Licensed 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.
 */

public class Main {
    /**
     * convert wild card to regular expression
     */
    public static String toRegex(String wildcard) {
        // **/ >> (.*/)?
        // ** >> (.*/)?
        String converted = "^" + wildcard.replaceAll("(^|/)\\*\\*/", "@@").replaceAll("(^|/)\\*\\*", "@@")
                .replaceAll("\\.", "\\\\.").replaceAll("\\*", "[^/]*").replaceAll("\\?", ".");

        // add to last ((^|/).*)? to consider files in folder
        if (converted.contains("@@")) {
            converted = converted.replaceAll("@@", "(.*/)?") + "((^|/).*)?$";
        }
        return converted;
    }
}

Related

1. toRegex(String includes)
2. toRegEx(String input)
3. toRegex(String name)
4. toRegex(String param)
5. toRegExFormat(String pattern)
6. toRegexPattern(String filter)
7. toRegexPattern(String pattern)