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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.layoutlib.bridge.android;
     18 
     19 import com.android.layoutlib.bridge.impl.RenderAction;
     20 
     21 import android.icu.util.ULocale;
     22 
     23 import java.util.Locale;
     24 
     25 /**
     26  * This class provides an alternate implementation for {@code java.util.Locale#toLanguageTag}
     27  * which is only available after Java 6.
     28  *
     29  * The create tool re-writes references to the above mentioned method to this one. Hence it's
     30  * imperative that this class is not deleted unless the create tool is modified.
     31  */
     32 @SuppressWarnings("UnusedDeclaration")
     33 public class AndroidLocale {
     34 
     35     public static String toLanguageTag(Locale locale)  {
     36         return ULocale.forLocale(locale).toLanguageTag();
     37     }
     38 
     39     public static String adjustLanguageCode(String languageCode) {
     40         String adjusted = languageCode.toLowerCase(Locale.US);
     41         // Map new language codes to the obsolete language
     42         // codes so the correct resource bundles will be used.
     43         if (languageCode.equals("he")) {
     44             adjusted = "iw";
     45         } else if (languageCode.equals("id")) {
     46             adjusted = "in";
     47         } else if (languageCode.equals("yi")) {
     48             adjusted = "ji";
     49         }
     50 
     51         return adjusted;
     52     }
     53 
     54     public static Locale forLanguageTag(String tag) {
     55         return ULocale.forLanguageTag(tag).toLocale();
     56     }
     57 
     58     public static String getScript(Locale locale) {
     59         return ULocale.forLocale(locale).getScript();
     60     }
     61 
     62     public static Locale getDefault() {
     63         BridgeContext context = RenderAction.getCurrentContext();
     64         if (context != null) {
     65             Locale locale = context.getConfiguration().locale;
     66             if (locale != null) {
     67                 return locale;
     68             }
     69         }
     70         return Locale.getDefault();
     71     }
     72 }
     73