/**
 *
 * NORD POS is a fork of Openbravo POS.
 *
 * Copyright (C) 2009-2013 Nord Trading Ltd. <http://www.nordpos.com>
 *
 * This file is part of NORD POS.
 *
 * NORD POS 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.
 *
 * NORD POS 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
 * NORD POS. If not, see <http://www.gnu.org/licenses/>.
 */
package com.nordpos.device.util;

/**
 *
 * @author Andrey Svininykh <svininykh@gmail.com>
 * @version NORD POS 3.0
 */
public class StringParser {

    private int currentPosition;
    private final int maxPosition;
    private final String str;

    public StringParser(String str) {
        this.str = str;
        currentPosition = 0;
        maxPosition = str == null ? 0 : str.length();
    }

    public String nextToken(char c) {

        if (currentPosition < maxPosition) {

            int start = currentPosition;
            while (currentPosition < maxPosition && c != str.charAt(currentPosition)) {
                currentPosition ++;
            }

            if (currentPosition < maxPosition) {
                return str.substring(start, currentPosition++);
            } else {
                return str.substring(start);
            }
        } else {
            return "";
        }
    }
}