com.github.slugify.Slugify.java Source code

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Here is the source code for com.github.slugify.Slugify.java

Source

package com.github.slugify;

/*
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 */

import java.text.Normalizer;

import org.apache.commons.lang.StringUtils;

public class Slugify {
    public static String slugify(String input) {
        String ret = StringUtils.trim(input);
        if (StringUtils.isBlank(input)) {
            return "";
        }

        ret = normalize(ret);
        ret = removeDuplicateWhiteSpaces(ret);
        return ret.replace(" ", "-").toLowerCase();
    }

    private static String normalize(String input) {
        String ret = StringUtils.trim(input);
        if (StringUtils.isBlank(ret)) {
            return "";
        }

        ret = ret.replace("", "ss");
        return Normalizer.normalize(ret, Normalizer.Form.NFD).replaceAll("[^\\p{ASCII}]", "")
                .replaceAll("[^a-zA-Z0-9 ]", "");
    }

    private static String removeDuplicateWhiteSpaces(String input) {
        String ret = StringUtils.trim(input);
        if (StringUtils.isBlank(ret)) {
            return "";
        }

        return ret.replaceAll("\\s+", " ");
    }
}