StringUtils.java

/*
 * VITacademics
 * Copyright (C) 2015  Aneesh Neelam <neelam.aneesh@gmail.com>
 * Copyright (C) 2015  Saurabh Joshi <saurabhjoshi94@outlook.com>
 * Copyright (C) 2015  Gaurav Agerwala <gauravagerwala@gmail.com>
 * Copyright (C) 2015  Karthik Balakrishnan <karthikb351@gmail.com>
 * Copyright (C) 2015  Pulkit Juneja <pulkit.16296@gmail.com>
 * Copyright (C) 2015  Hemant Jain <hemanham@gmail.com>
 * Copyright (C) 2015  Darshan Mehta <darshanmehta17@gmail.com>
 *
 * This file is part of VITacademics.
 *
 * VITacademics 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.
 *
 * VITacademics 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 VITacademics.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.karthikb351.vitinfo2.utility;

import android.support.annotation.Nullable;

public class StringUtils {

    @Nullable
    public static String toTitleCase(String string) {

        if (string == null) {
            return null;
        }

        boolean space = true;
        StringBuilder builder = new StringBuilder(string);
        final int len = builder.length();

        for (int i = 0; i < len; ++i) {
            char c = builder.charAt(i);
            if (space) {
                if (!Character.isWhitespace(c)) {
                    // Convert to title case and switch out of whitespace mode.
                    builder.setCharAt(i, Character.toTitleCase(c));
                    space = false;
                }
            } else if (Character.isWhitespace(c)) {
                space = true;
            } else {
                builder.setCharAt(i, Character.toLowerCase(c));
            }
        }

        return builder.toString();
    }

    public static boolean checkString(String string) {
        return string != null && !string.isEmpty();
    }

}