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src/java.base/share/classes/sun/util/locale/provider/HostLocaleProviderAdapter.java

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rev 59374 : [mq]: 8245241
   1 /*
   2  * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.util.locale.provider;
  27 
  28 import java.lang.reflect.InvocationTargetException;
  29 import java.lang.reflect.Method;
  30 import java.text.DecimalFormat;

  31 import java.util.spi.LocaleServiceProvider;
  32 
  33 /**
  34  * LocaleProviderAdapter implementation for the host locale data.
  35  * Currently it is only implemented on Windows Vista or later.
  36  *
  37  * @author Naoto Sato
  38  */
  39 public class HostLocaleProviderAdapter extends AuxLocaleProviderAdapter {
  40 
  41     /**
  42      * Returns the type of this LocaleProviderAdapter
  43      */
  44     @Override
  45     public LocaleProviderAdapter.Type getAdapterType() {
  46         return LocaleProviderAdapter.Type.HOST;
  47     }
  48 
  49     @Override
  50     @SuppressWarnings("unchecked")
  51     protected <P extends LocaleServiceProvider> P findInstalledProvider(final Class<P> c) {
  52         try {
  53             Method getter = HostLocaleProviderAdapterImpl.class.getMethod(
  54                     "get" + c.getSimpleName(), (Class<?>[]) null);
  55             return (P)getter.invoke(null, (Object[]) null);
  56         }  catch (NoSuchMethodException |
  57                   IllegalAccessException |




  58                   IllegalArgumentException |
  59                   InvocationTargetException ex) {
  60             LocaleServiceProviderPool.config(HostLocaleProviderAdapter.class, ex.toString());

  61         }
  62         return null;
  63     }
  64 
  65     /**
  66      * Utility to make the decimal format specific to integer, called
  67      * by the platform dependent adapter implementations.
  68      *
  69      * @param df A DecimalFormat object
  70      * @return The same DecimalFormat object in the argument, modified
  71      *          to allow integer formatting/parsing only.
  72      */
  73     static DecimalFormat makeIntegerFormatter(DecimalFormat df) {
  74         df.setMaximumFractionDigits(0);
  75         df.setDecimalSeparatorAlwaysShown(false);
  76         df.setParseIntegerOnly(true);
  77         return df;
  78     }
  79 }
   1 /*
   2  * Copyright (c) 2012, 2020, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.util.locale.provider;
  27 
  28 import java.lang.reflect.InvocationTargetException;

  29 import java.text.DecimalFormat;
  30 import java.util.ServiceConfigurationError;
  31 import java.util.spi.LocaleServiceProvider;
  32 
  33 /**
  34  * LocaleProviderAdapter implementation for the host locale data.
  35  * Currently it is only implemented on Windows Vista or later.
  36  *
  37  * @author Naoto Sato
  38  */
  39 public class HostLocaleProviderAdapter extends AuxLocaleProviderAdapter {
  40 
  41     /**
  42      * Returns the type of this LocaleProviderAdapter
  43      */
  44     @Override
  45     public LocaleProviderAdapter.Type getAdapterType() {
  46         return LocaleProviderAdapter.Type.HOST;
  47     }
  48 
  49     @Override
  50     @SuppressWarnings("unchecked")
  51     protected <P extends LocaleServiceProvider> P findInstalledProvider(final Class<P> c) {
  52         try {
  53             return (P)Class.forName(
  54                         "sun.util.locale.provider.HostLocaleProviderAdapterImpl")
  55                     .getMethod("get" + c.getSimpleName(), (Class<?>[]) null)
  56                     .invoke(null, (Object[]) null);
  57         } catch (ClassNotFoundException |
  58                  NoSuchMethodException ex) {
  59             // permissible exceptions as platform may not support host adapter
  60             return null;
  61         } catch (IllegalAccessException |
  62                  IllegalArgumentException |
  63                  InvocationTargetException ex) {
  64             throw new ServiceConfigurationError(
  65                 "Host locale provider cannot be located.", ex);
  66         }

  67     }
  68 
  69     /**
  70      * Utility to make the decimal format specific to integer, called
  71      * by the platform dependent adapter implementations.
  72      *
  73      * @param df A DecimalFormat object
  74      * @return The same DecimalFormat object in the argument, modified
  75      *          to allow integer formatting/parsing only.
  76      */
  77     static DecimalFormat makeIntegerFormatter(DecimalFormat df) {
  78         df.setMaximumFractionDigits(0);
  79         df.setDecimalSeparatorAlwaysShown(false);
  80         df.setParseIntegerOnly(true);
  81         return df;
  82     }
  83 }
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