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 }