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1
61
62 package org.jaxen.function.ext;
63
64 import java.util.List  ;
65 import java.util.Locale ;
66 import java.util.StringTokenizer ;
67
68 import org.jaxen.Function;
69 import org.jaxen.Navigator;
70 import org.jaxen.function.StringFunction;
71
72
81 public abstract class LocaleFunctionSupport implements Function
82 {
83
84
96 protected Locale getLocale(Object value, Navigator navigator)
97 {
98 if (value instanceof Locale )
99 {
100 return (Locale ) value;
101 }
102 else if(value instanceof List )
103 {
104 List list = (List ) value;
105 if ( ! list.isEmpty() )
106 {
107 return getLocale( list.get(0), navigator );
108 }
109 }
110 else {
111 String text = StringFunction.evaluate( value, navigator );
112 if (text != null && text.length() > 0)
113 {
114 return findLocale( text );
115 }
116 }
117 return null;
118 }
119
120
129 protected Locale findLocale(String localeText) {
130 StringTokenizer tokens = new StringTokenizer ( localeText, "-" );
131 if (tokens.hasMoreTokens())
132 {
133 String language = tokens.nextToken();
134 if (! tokens.hasMoreTokens())
135 {
136 return findLocaleForLanguage(language);
137 }
138 else
139 {
140 String country = tokens.nextToken();
141 if (! tokens.hasMoreTokens())
142 {
143 return new Locale (language, country);
144 }
145 else
146 {
147 String variant = tokens.nextToken();
148 return new Locale (language, country, variant);
149 }
150 }
151 }
152 return null;
153 }
154
155
163 protected Locale findLocaleForLanguage(String language) {
164 Locale [] locales = Locale.getAvailableLocales();
165 for ( int i = 0, size = locales.length; i < size; i++ )
166 {
167 Locale locale = locales[i];
168 if ( language.equals( locale.getLanguage() ) )
169 {
170 String country = locale.getCountry();
171 if ( country == null || country.length() == 0 )
172 {
173 String variant = locale.getVariant();
174 if ( variant == null || variant.length() == 0 )
175 {
176 return locale;
177 }
178 }
179 }
180 }
181 return null;
182 }
183 }
184 |
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