Coverage Report - org.jaxen.function.ext.LocaleFunctionSupport
 
Classes in this File Line Coverage Branch Coverage Complexity
LocaleFunctionSupport
76%
25/33
91%
10/11
7
 
 1   
 /*
 2   
  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/function/ext/LocaleFunctionSupport.java,v 1.10 2006/02/05 21:47:42 elharo Exp $
 3   
  * $Revision: 1.10 $
 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: LocaleFunctionSupport.java,v 1.10 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   
 import java.util.StringTokenizer;
 53   
 
 54   
 import org.jaxen.Function;
 55   
 import org.jaxen.Navigator;
 56   
 import org.jaxen.function.StringFunction;
 57   
 
 58   
 /**
 59   
  * <p>An abstract base class for Locale-specific extension
 60   
  * functions. This class provides convenience methods that
 61   
  * can be inherited, specifically to find a Locale from
 62   
  * an XPath function argument value.
 63   
  * </p>
 64   
  *
 65   
  * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
 66   
  */
 67  208 
 public abstract class LocaleFunctionSupport implements Function
 68   
 {
 69   
 
 70   
     /**
 71   
      * Attempts to convert the given function argument value
 72   
      * into a Locale either via casting, extracting it from a List
 73   
      * or looking up the named Locale using reflection.
 74   
      *
 75   
      * @param value is either a Locale, a List containing a Locale
 76   
      *      or a String containing the name of a Locale
 77   
      *      as defined by the Locale static members.
 78   
      *
 79   
      * @return the Locale for the value or null if one could
 80   
      *      not be deduced
 81   
      */
 82   
     protected Locale getLocale(Object value, Navigator navigator)
 83   
     {
 84  24 
         if (value instanceof Locale)
 85   
         {
 86  0 
             return (Locale) value;
 87   
         }
 88  24 
         else if(value instanceof List)
 89   
         {
 90  0 
             List list = (List) value;
 91  0 
             if ( ! list.isEmpty() )
 92   
             {
 93  0 
                 return getLocale( list.get(0), navigator );
 94   
             }
 95  0 
         }
 96   
         else {
 97  24 
             String text = StringFunction.evaluate( value, navigator );
 98  24 
             if (text != null && text.length() > 0)
 99   
             {
 100  24 
                 return findLocale( text );
 101   
             }
 102   
         }
 103  0 
         return null;
 104   
     }
 105   
 
 106   
     /**
 107   
      * Tries to find a Locale instance by name using
 108   
      * <a href="http://www.ietf.org/rfc/rfc3066.txt" target="_top">RFC 3066</a>
 109   
      * language tags such as 'en', 'en-US', 'en-US-Brooklyn'.
 110   
      *
 111   
      * @param localeText the RFC 3066 language tag
 112   
      * @return the locale for the given text or null if one could not
 113   
      *      be found
 114   
      */
 115   
     protected Locale findLocale(String localeText) {
 116  24 
         StringTokenizer tokens = new StringTokenizer( localeText, "-" );
 117  24 
         if (tokens.hasMoreTokens())
 118   
         {
 119  24 
             String language = tokens.nextToken();
 120  24 
             if (! tokens.hasMoreTokens())
 121   
             {
 122  8 
                 return findLocaleForLanguage(language);
 123   
             }
 124   
             else
 125   
             {
 126  16 
                 String country = tokens.nextToken();
 127  16 
                 if (! tokens.hasMoreTokens())
 128   
                 {
 129  8 
                     return new Locale(language, country);
 130   
                 }
 131   
                 else
 132   
                 {
 133  8 
                     String variant = tokens.nextToken();
 134  8 
                     return new Locale(language, country, variant);
 135   
                 }
 136   
             }
 137   
         }
 138  0 
         return null;
 139   
     }
 140   
 
 141   
     /**
 142   
      * Finds the locale with the given language name with no country
 143   
      * or variant, such as Locale.ENGLISH or Locale.FRENCH
 144   
      *
 145   
      * @param language the language code to look for
 146   
      * @return the locale for the given language or null if one could not
 147   
      *      be found
 148   
      */
 149   
     protected Locale findLocaleForLanguage(String language) {
 150  8 
         Locale[] locales = Locale.getAvailableLocales();
 151  664 
         for ( int i = 0, size = locales.length; i < size; i++ )
 152   
         {
 153  664 
             Locale locale = locales[i];
 154  664 
             if ( language.equals( locale.getLanguage() ) )
 155   
             {
 156  8 
                 String country = locale.getCountry();
 157  8 
                 if ( country == null || country.length() == 0 )
 158   
                 {
 159  8 
                     String variant = locale.getVariant();
 160  8 
                     if ( variant == null || variant.length() == 0 )
 161   
                     {
 162  8 
                         return locale;
 163   
                     }
 164   
                 }
 165   
             }
 166   
         }
 167  0 
         return null;
 168   
     }
 169   
 }
Report generated by Cobertura 1.8 on 5/5/07 3:06 PM.