Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
LowerFunction |
|
| 3.5;3.5 |
1 | /* | |
2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/function/ext/LowerFunction.java,v 1.11 2006/02/05 21:47:42 elharo Exp $ | |
3 | * $Revision: 1.11 $ | |
4 | * $Date: 2006/02/05 21:47:42 $ | |
5 | * | |
6 | * ==================================================================== | |
7 | * | |
8 | * Copyright 2000-2002 bob mcwhirter & James Strachan. | |
9 | * All rights reserved. | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions are | |
13 | * met: | |
14 | * | |
15 | * * Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions and the following disclaimer. | |
17 | * | |
18 | * * Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * | |
22 | * * Neither the name of the Jaxen Project nor the names of its | |
23 | * contributors may be used to endorse or promote products derived | |
24 | * from this software without specific prior written permission. | |
25 | * | |
26 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
27 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
28 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
29 | * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER | |
30 | * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
31 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
32 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
33 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
34 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
35 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
36 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
37 | * | |
38 | * ==================================================================== | |
39 | * This software consists of voluntary contributions made by many | |
40 | * individuals on behalf of the Jaxen Project and was originally | |
41 | * created by bob mcwhirter <bob@werken.com> and | |
42 | * James Strachan <jstrachan@apache.org>. For more information on the | |
43 | * Jaxen Project, please see <http://www.jaxen.org/>. | |
44 | * | |
45 | * $Id: LowerFunction.java,v 1.11 2006/02/05 21:47:42 elharo Exp $ | |
46 | */ | |
47 | ||
48 | package org.jaxen.function.ext; | |
49 | ||
50 | import java.util.List; | |
51 | import java.util.Locale; | |
52 | ||
53 | import org.jaxen.Context; | |
54 | import org.jaxen.FunctionCallException; | |
55 | import org.jaxen.Navigator; | |
56 | import org.jaxen.function.StringFunction; | |
57 | ||
58 | /** | |
59 | * <p><code><i>string</i> lower-case(<i>string</i>)</code> | |
60 | * | |
61 | * This function can take a second parameter of the | |
62 | * <code>Locale</code> to use for the String conversion. | |
63 | * </p> | |
64 | * | |
65 | * <p> | |
66 | * For example | |
67 | * | |
68 | * <code>lower-case( /foo/bar )</code> | |
69 | * <code>lower-case( /foo/@name, $myLocale )</code> | |
70 | * </p> | |
71 | * | |
72 | * @author mark wilson (markw@wilsoncom.de) | |
73 | * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> | |
74 | */ | |
75 | 104 | public class LowerFunction extends LocaleFunctionSupport |
76 | { | |
77 | ||
78 | public Object call(Context context, | |
79 | List args) throws FunctionCallException | |
80 | { | |
81 | 8 | Navigator navigator = context.getNavigator(); |
82 | 8 | int size = args.size(); |
83 | 8 | if (size > 0) |
84 | { | |
85 | 8 | Object text = args.get(0); |
86 | 8 | Locale locale = null; |
87 | 8 | if (size > 1) |
88 | { | |
89 | 0 | locale = getLocale( args.get(1), navigator ); |
90 | } | |
91 | 8 | return evaluate( text, locale, navigator ); |
92 | } | |
93 | 0 | throw new FunctionCallException( "lower-case() requires at least one argument." ); |
94 | } | |
95 | ||
96 | /** | |
97 | * Converts the given string value to lower case using an optional Locale | |
98 | * | |
99 | * @param strArg the value which gets converted to a String | |
100 | * @param locale the Locale to use for the conversion or null | |
101 | * English should be used | |
102 | * @param nav the Navigator to use | |
103 | */ | |
104 | public static String evaluate(Object strArg, | |
105 | Locale locale, | |
106 | Navigator nav) | |
107 | { | |
108 | ||
109 | 8 | String str = StringFunction.evaluate( strArg, |
110 | nav ); | |
111 | // it might be possible to use the xml:lang attribute to | |
112 | // pick a default locale | |
113 | 8 | if (locale == null) locale = Locale.ENGLISH; |
114 | 8 | return str.toLowerCase(locale); |
115 | ||
116 | } | |
117 | } |