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 }