Java String Underscore toUnderscore(final String input, final boolean plural)

Description

to Underscore

License

Open Source License

Declaration

public static String toUnderscore(final String input, final boolean plural) 

Method Source Code

//package com.java2s;
/*//ww w.  ja  va  2s .  co  m
 *  Copyright (C) 2010-2013 Axel Morgner, structr <structr@structr.org>
 *
 *  This file is part of structr <http://structr.org>.
 *
 *  structr 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.
 *
 *  structr 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 structr.  If not, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    public static String toUnderscore(final String input, final boolean plural) {

        StringBuilder out = new StringBuilder();

        for (int i = 0; i < input.length(); i++) {

            char c = input.charAt(i);

            if (Character.isUpperCase(c)) {

                if (i > 0) {

                    out.append("_");

                }

                out.append(Character.toLowerCase(c));

            } else {

                out.append(c);

            }

        }

        String output = out.toString();

        return plural ? plural(output) : output;
    }

    public static String plural(String type) {

        int len = type.length();

        if (type.substring(len - 1, len).equals("y")) {

            return type.substring(0, len - 1) + "ies";

        } else if (!(type.substring(len - 1, len).equals("s"))) {

            return type.concat("s");

        } else {
            return type;
        }
    }
}

Related

1. toUnderscore(String s)
2. toUnderscore(String text)
3. toUnderscore(String v)
4. toUnderscoreCase(final String s)