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Java > Open Source Codes > org > apache > commons > cli > Util


1 /*
2  * $Header: /cvsroot/cvsgrab/cvsgrab/src/java/org/apache/commons/cli/Util.java,v 1.1 2005/06/16 18:11:11 ludovicc Exp $
3  * $Revision: 1.1 $
4  * $Date: 2005/06/16 18:11:11 $
5  *
6  * ====================================================================
7  *
8  * The Apache Software License, Version 1.1
9  *
10  * Copyright (c) 1999-2001 The Apache Software Foundation. All rights
11  * reserved.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  *
17  * 1. Redistributions of source code must retain the above copyright
18  * notice, this list of conditions and the following disclaimer.
19  *
20  * 2. Redistributions in binary form must reproduce the above copyright
21  * notice, this list of conditions and the following disclaimer in
22  * the documentation and/or other materials provided with the
23  * distribution.
24  *
25  * 3. The end-user documentation included with the redistribution, if
26  * any, must include the following acknowledgement:
27  * "This product includes software developed by the
28  * Apache Software Foundation (http://www.apache.org/)."
29  * Alternately, this acknowledgement may appear in the software itself,
30  * if and wherever such third-party acknowledgements normally appear.
31  *
32  * 4. The names "The Jakarta Project", "Commons", and "Apache Software
33  * Foundation" must not be used to endorse or promote products derived
34  * from this software without prior written permission. For written
35  * permission, please contact apache@apache.org.
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37  * 5. Products derived from this software may not be called "Apache"
38  * nor may "Apache" appear in their names without prior written
39  * permission of the Apache Software Foundation.
40  *
41  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
42  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
43  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
44  * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
45  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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47  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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49  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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51  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52  * SUCH DAMAGE.
53  * ====================================================================
54  *
55  * This software consists of voluntary contributions made by many
56  * individuals on behalf of the Apache Software Foundation. For more
57  * information on the Apache Software Foundation, please see
58  * <http://www.apache.org/>.
59  *
60  */
61 package org.apache.commons.cli;
62
63 /**
64  * Contains useful helper methods for classes within this package.
65  *
66  * @author John Keyes (john at integralsource.com)
67  */
68 class Util {
69
70     /**
71      * <p>Remove the hyphens from the begining of <code>str</code> and
72      * return the new String.</p>
73      *
74      * @param str The string from which the hyphens should be removed.
75      *
76      * @return the new String.
77      */
78     static String JavaDoc stripLeadingHyphens(String JavaDoc str)
79     {
80         if (str.startsWith("--"))
81         {
82             return str.substring(2, str.length());
83         }
84         else if (str.startsWith("-"))
85         {
86             return str.substring(1, str.length());
87         }
88
89         return str;
90     }
91
92     /**
93      * <p>Remove the leading and trailing quotes from <code>str</code>,
94      * e.g. if str is '"one two"', then 'one two' is returned.</p>
95      *
96      * @param str The string from which the leading and trailing quotes
97      * should be removed.
98      *
99      * @return The string without the leading and trailing quotes.
100      */
101     static String JavaDoc stripLeadingAndTrailingQuotes(String JavaDoc str)
102     {
103         if (str.startsWith("\"")) {
104             str = str.substring(1, str.length());
105         }
106         if (str.endsWith("\"")) {
107             str = str.substring(0, str.length()-1);
108         }
109         return str;
110     }
111 }
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