nl.surfnet.coin.teams.util.PHPRegexConverter.java Source code

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Here is the source code for nl.surfnet.coin.teams.util.PHPRegexConverter.java

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/*
 * Copyright 2012 SURFnet bv, The Netherlands
 *
 * 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.
 */

package nl.surfnet.coin.teams.util;

import org.springframework.util.StringUtils;

/**
 * Util class to handle the regular expressions created for PHP
 */
public final class PHPRegexConverter {

    private PHPRegexConverter() {

    }

    /**
     * Strips the delimiter chars from the PHP regex
     *
     * @param phpPattern String with regular expression that may contain | as delimiter
     * @return cleaned up regex pattern, can be {@literal null}
     */
    public static String convertPHPRegexPattern(String phpPattern) {
        if (StringUtils.hasText(phpPattern)) {
            return phpPattern.replaceFirst("^\\|(.*)\\|$", "$1");
        }
        return phpPattern;
    }
}