001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.util;
016    
017    /**
018     * @author Samuel Kong
019     */
020    public class CSVUtil {
021    
022            public static String encode(Object obj) {
023                    Class<?> clazz = obj.getClass();
024    
025                    if (!clazz.isArray()) {
026                            return encode(String.valueOf(obj));
027                    }
028    
029                    Object[] array = (Object[])obj;
030    
031                    return encode(StringUtil.merge(array));
032            }
033    
034            public static String encode(String s) {
035                    if (s == null) {
036                            return null;
037                    }
038    
039                    if ((s.indexOf(CharPool.COMMA) < 0) &&
040                            (s.indexOf(CharPool.QUOTE) < 0) &&
041                            (s.indexOf(CharPool.NEW_LINE) < 0) &&
042                            (s.indexOf(CharPool.RETURN) < 0)) {
043    
044                            return s;
045                    }
046    
047                    s = StringUtil.replace(s, StringPool.QUOTE, StringPool.DOUBLE_QUOTE);
048    
049                    return StringPool.QUOTE.concat(s.concat(StringPool.QUOTE));
050            }
051    
052    }