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      1 /*
      2  * Copyright (C) 2010 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 libcore.icu;
     18 
     19 import java.util.Locale;
     20 
     21 /**
     22  * Provides access to ICU's
     23  * <a href="http://icu-project.org/apiref/icu4c/classPluralRules.html">PluralRules</a> class.
     24  * This is not necessary for Java API, but is used by frameworks/base's resources system to
     25  * ease localization of strings to languages with complex grammatical rules regarding number.
     26  */
     27 public final class NativePluralRules {
     28     public static final int ZERO  = 0;
     29     public static final int ONE   = 1;
     30     public static final int TWO   = 2;
     31     public static final int FEW   = 3;
     32     public static final int MANY  = 4;
     33     public static final int OTHER = 5;
     34 
     35     private final long address;
     36 
     37     private NativePluralRules(long address) {
     38         this.address = address;
     39     }
     40 
     41     @Override protected void finalize() throws Throwable {
     42         try {
     43             finalizeImpl(address);
     44         } finally {
     45             super.finalize();
     46         }
     47     }
     48 
     49     public static NativePluralRules forLocale(Locale locale) {
     50         return new NativePluralRules(forLocaleImpl(locale.toString()));
     51     }
     52 
     53     /**
     54      * Returns the constant defined in this class corresponding
     55      * to the first rule that matches the given value.
     56      */
     57     public int quantityForInt(int value) {
     58         // Pre-L compatibility. http://b/18429565.
     59         if (value < 0) {
     60             return OTHER;
     61         }
     62         return quantityForIntImpl(address, value);
     63     }
     64 
     65     private static native void finalizeImpl(long address);
     66     private static native long forLocaleImpl(String localeName);
     67     private static native int quantityForIntImpl(long address, int value);
     68 }
     69