1 /*
2 * Copyright (c) 2012, 2017, 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 static java.util.Calendar.*;
29 import java.util.Locale;
30 import java.util.Map;
31 import java.util.Optional;
32 import java.util.spi.CalendarDataProvider;
33 import java.util.spi.CalendarNameProvider;
34
35 /**
36 * {@code CalendarDataUtility} is a utility class for calling the
37 * {@link CalendarDataProvider} methods.
38 *
39 * @author Masayoshi Okutsu
40 * @author Naoto Sato
41 */
42 public class CalendarDataUtility {
43 public static final String FIRST_DAY_OF_WEEK = "firstDayOfWeek";
44 public static final String MINIMAL_DAYS_IN_FIRST_WEEK = "minimalDaysInFirstWeek";
45
46 // No instantiation
47 private CalendarDataUtility() {
48 }
49
50 public static int retrieveFirstDayOfWeek(Locale locale) {
51 // Look for the Unicode Extension in the locale parameter
52 if (locale.hasExtensions()) {
53 String fw = locale.getUnicodeLocaleType("fw");
54 if (fw != null) {
55 switch (fw.toLowerCase(Locale.ROOT)) {
56 case "mon":
57 return MONDAY;
58 case "tue":
59 return TUESDAY;
60 case "wed":
61 return WEDNESDAY;
62 case "thu":
63 return THURSDAY;
64 case "fri":
65 return FRIDAY;
66 case "sat":
67 return SATURDAY;
68 case "sun":
69 return SUNDAY;
70 }
71 }
72 }
73
74 LocaleServiceProviderPool pool =
75 LocaleServiceProviderPool.getPool(CalendarDataProvider.class);
76 Integer value = pool.getLocalizedObject(CalendarWeekParameterGetter.INSTANCE,
77 findRegionOverride(locale).orElse(locale),
78 true, FIRST_DAY_OF_WEEK);
79 return (value != null && (value >= SUNDAY && value <= SATURDAY)) ? value : SUNDAY;
80 }
81
82 public static int retrieveMinimalDaysInFirstWeek(Locale locale) {
83 LocaleServiceProviderPool pool =
84 LocaleServiceProviderPool.getPool(CalendarDataProvider.class);
85 Integer value = pool.getLocalizedObject(CalendarWeekParameterGetter.INSTANCE,
86 findRegionOverride(locale).orElse(locale),
87 true, MINIMAL_DAYS_IN_FIRST_WEEK);
88 return (value != null && (value >= 1 && value <= 7)) ? value : 1;
89 }
90
91 public static String retrieveFieldValueName(String id, int field, int value, int style, Locale locale) {
92 LocaleServiceProviderPool pool =
93 LocaleServiceProviderPool.getPool(CalendarNameProvider.class);
94 return pool.getLocalizedObject(CalendarFieldValueNameGetter.INSTANCE, locale, normalizeCalendarType(id),
95 field, value, style, false);
96 }
97
98 public static String retrieveJavaTimeFieldValueName(String id, int field, int value, int style, Locale locale) {
99 LocaleServiceProviderPool pool =
100 LocaleServiceProviderPool.getPool(CalendarNameProvider.class);
101 String name;
102 name = pool.getLocalizedObject(CalendarFieldValueNameGetter.INSTANCE, locale, normalizeCalendarType(id),
103 field, value, style, true);
104 if (name == null) {
105 name = pool.getLocalizedObject(CalendarFieldValueNameGetter.INSTANCE, locale, normalizeCalendarType(id),
106 field, value, style, false);
107 }
108 return name;
109 }
110
111 public static Map<String, Integer> retrieveFieldValueNames(String id, int field, int style, Locale locale) {
112 LocaleServiceProviderPool pool =
113 LocaleServiceProviderPool.getPool(CalendarNameProvider.class);
114 return pool.getLocalizedObject(CalendarFieldValueNamesMapGetter.INSTANCE, locale,
115 normalizeCalendarType(id), field, style, false);
116 }
117
118 public static Map<String, Integer> retrieveJavaTimeFieldValueNames(String id, int field, int style, Locale locale) {
119 LocaleServiceProviderPool pool =
120 LocaleServiceProviderPool.getPool(CalendarNameProvider.class);
121 Map<String, Integer> map;
122 map = pool.getLocalizedObject(CalendarFieldValueNamesMapGetter.INSTANCE, locale,
123 normalizeCalendarType(id), field, style, true);
124 if (map == null) {
125 map = pool.getLocalizedObject(CalendarFieldValueNamesMapGetter.INSTANCE, locale,
126 normalizeCalendarType(id), field, style, false);
127 }
128 return map;
129 }
130
131 /**
132 * Utility to look for a region override extension
133 */
134 public static Optional<Locale> findRegionOverride(Locale l) {
135 String rg = l.getUnicodeLocaleType("rg");
136 Locale override = null;
137
138 if (rg != null && rg.length() == 6) {
139 // UN M.49 code should not be allowed here
140 // cannot use regex here, as it could be a recursive call
141 rg = rg.toUpperCase(Locale.ROOT);
142 if (rg.charAt(0) >= 0x0041 &&
143 rg.charAt(0) <= 0x005A &&
144 rg.charAt(1) >= 0x0041 &&
145 rg.charAt(1) <= 0x005A &&
146 rg.substring(2).equals("ZZZZ")) {
147 override = new Locale.Builder().setLocale(l)
148 .setRegion(rg.substring(0, 2))
149 .build();
150 }
151 }
152
153 return Optional.ofNullable(override);
154 }
155
156 static String normalizeCalendarType(String requestID) {
157 String type;
158 if (requestID.equals("gregorian") || requestID.equals("iso8601")) {
159 type = "gregory";
160 } else if (requestID.startsWith("islamic")) {
161 type = "islamic";
162 } else {
163 type = requestID;
164 }
165 return type;
166 }
167
168 /**
169 * Obtains a localized field value string from a CalendarDataProvider
170 * implementation.
171 */
172 private static class CalendarFieldValueNameGetter
173 implements LocaleServiceProviderPool.LocalizedObjectGetter<CalendarNameProvider,
174 String> {
175 private static final CalendarFieldValueNameGetter INSTANCE =
176 new CalendarFieldValueNameGetter();
177
178 @Override
179 public String getObject(CalendarNameProvider calendarNameProvider,
180 Locale locale,
181 String requestID, // calendarType
182 Object... params) {
183 assert params.length == 4;
184 int field = (int) params[0];
185 int value = (int) params[1];
186 int style = (int) params[2];
187 boolean javatime = (boolean) params[3];
188
189 // If javatime is true, resources from CLDR have precedence over JRE
190 // native resources.
191 if (javatime && calendarNameProvider instanceof CalendarNameProviderImpl) {
192 String name;
193 name = ((CalendarNameProviderImpl)calendarNameProvider)
194 .getJavaTimeDisplayName(requestID, field, value, style, locale);
195 return name;
196 }
197 return calendarNameProvider.getDisplayName(requestID, field, value, style, locale);
198 }
199 }
200
201 /**
202 * Obtains a localized field-value pairs from a CalendarDataProvider
203 * implementation.
204 */
205 private static class CalendarFieldValueNamesMapGetter
206 implements LocaleServiceProviderPool.LocalizedObjectGetter<CalendarNameProvider,
207 Map<String, Integer>> {
208 private static final CalendarFieldValueNamesMapGetter INSTANCE =
209 new CalendarFieldValueNamesMapGetter();
210
211 @Override
212 public Map<String, Integer> getObject(CalendarNameProvider calendarNameProvider,
213 Locale locale,
214 String requestID, // calendarType
215 Object... params) {
216 assert params.length == 3;
217 int field = (int) params[0];
218 int style = (int) params[1];
219 boolean javatime = (boolean) params[2];
220
221 // If javatime is true, resources from CLDR have precedence over JRE
222 // native resources.
223 if (javatime && calendarNameProvider instanceof CalendarNameProviderImpl) {
224 Map<String, Integer> map;
225 map = ((CalendarNameProviderImpl)calendarNameProvider)
226 .getJavaTimeDisplayNames(requestID, field, style, locale);
227 return map;
228 }
229 return calendarNameProvider.getDisplayNames(requestID, field, style, locale);
230 }
231 }
232
233 private static class CalendarWeekParameterGetter
234 implements LocaleServiceProviderPool.LocalizedObjectGetter<CalendarDataProvider,
235 Integer> {
236 private static final CalendarWeekParameterGetter INSTANCE =
237 new CalendarWeekParameterGetter();
238
239 @Override
240 public Integer getObject(CalendarDataProvider calendarDataProvider,
241 Locale locale,
242 String requestID, // resource key
243 Object... params) {
244 assert params.length == 0;
245 int value;
246 switch (requestID) {
247 case FIRST_DAY_OF_WEEK:
248 value = calendarDataProvider.getFirstDayOfWeek(locale);
249 break;
250 case MINIMAL_DAYS_IN_FIRST_WEEK:
251 value = calendarDataProvider.getMinimalDaysInFirstWeek(locale);
252 break;
253 default:
254 throw new InternalError("invalid requestID: " + requestID);
255 }
256 return (value != 0) ? value : null;
257 }
258 }
259 }