Coverage Report - org.jaxen.function.ext.LowerFunction
 
Classes in this File Line Coverage Branch Coverage Complexity
LowerFunction
85%
11/13
100%
3/3
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  
 }