1 /*
2 * $Id: StringUtils.java [23-Apr-2004]
3 *
4 * Copyright (c) 2004, Ben Fortuna
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * o Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * o Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * o Neither the name of Ben Fortuna nor the names of any other contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
26 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
29 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
30 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34 package net.fortuna.ical4j.util;
35
36 /***
37 * Utility methods for working with parameters.
38 * @author benfortuna
39 */
40 public final class StringUtils {
41
42 /***
43 * Constructor made private to prevent instantiation.
44 */
45 private StringUtils() {
46 }
47
48 /***
49 * Convenience method for adding quotes. The specified
50 * object is converted to a string representation by
51 * calling its <code>toString()</code> method.
52 * @param aValue an object to quote
53 * @return a quoted string
54 */
55 public static String quote(final Object aValue) {
56
57 if (aValue != null) {
58
59 return "\"" + aValue + "\"";
60 }
61
62 return "\"\"";
63 }
64
65 /***
66 * Convenience method for removing surrounding quotes
67 * from a string value.
68 * @param aValue a string to remove quotes from
69 * @return an un-quoted string
70 */
71 public static String unquote(final String aValue) {
72
73 if (aValue.startsWith("\"") && aValue.endsWith("\"")) {
74
75 return aValue.substring(0, aValue.length() - 1).substring(1);
76 }
77
78 return aValue;
79 }
80 }