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.cldr;
27
28 import java.security.AccessController;
29 import java.security.PrivilegedActionException;
30 import java.security.PrivilegedExceptionAction;
31 import java.text.spi.BreakIteratorProvider;
32 import java.text.spi.CollatorProvider;
33 import java.util.Collections;
34 import java.util.HashSet;
35 import java.util.Locale;
36 import java.util.ServiceLoader;
37 import java.util.Set;
38 import java.util.StringTokenizer;
39 import sun.util.locale.provider.JRELocaleProviderAdapter;
40 import sun.util.locale.provider.LocaleProviderAdapter;
41 import sun.util.locale.provider.LocaleDataMetaInfo;
42
43 /**
44 * LocaleProviderAdapter implementation for the CLDR locale data.
45 *
46 * @author Masayoshi Okutsu
47 * @author Naoto Sato
48 */
49 public class CLDRLocaleProviderAdapter extends JRELocaleProviderAdapter {
50
51 private final LocaleDataMetaInfo metaInfo;
52
53 public CLDRLocaleProviderAdapter() {
54 try {
55 metaInfo = AccessController.doPrivileged(new PrivilegedExceptionAction<LocaleDataMetaInfo>() {
56 @Override
57 public LocaleDataMetaInfo run() {
58 for (LocaleDataMetaInfo ldmi : ServiceLoader.loadInstalled(LocaleDataMetaInfo.class)) {
59 if (ldmi.getType() == LocaleProviderAdapter.Type.CLDR) {
60 return ldmi;
61 }
62 }
63 return null;
64 }
65 });
66 } catch (Exception e) {
67 // Catch any exception, and fail gracefully as if CLDR locales do not exist.
68 // It's ok ignore it if something wrong happens because there always is the
69 // JRE or FALLBACK LocaleProviderAdapter that will do the right thing.
70 throw new UnsupportedOperationException(e);
71 }
72
73 if (metaInfo == null) {
74 throw new UnsupportedOperationException("CLDR locale data could not be found.");
75 }
76 }
77
78 /**
79 * Returns the type of this LocaleProviderAdapter
80 * @return the type of this
81 */
82 @Override
83 public LocaleProviderAdapter.Type getAdapterType() {
84 return LocaleProviderAdapter.Type.CLDR;
85 }
86
87 @Override
88 public BreakIteratorProvider getBreakIteratorProvider() {
89 return null;
90 }
91
92 @Override
93 public CollatorProvider getCollatorProvider() {
94 return null;
95 }
96
97 @Override
98 public Locale[] getAvailableLocales() {
99 Set<String> all = createLanguageTagSet("AvailableLocales");
100 Locale[] locs = new Locale[all.size()];
101 int index = 0;
102 for (String tag : all) {
103 locs[index++] = Locale.forLanguageTag(tag);
104 }
105 return locs;
106 }
107
108 @Override
109 protected Set<String> createLanguageTagSet(String category) {
110 String supportedLocaleString = metaInfo.availableLanguageTags(category);
111 if (supportedLocaleString == null) {
112 return Collections.emptySet();
113 }
114 Set<String> tagset = new HashSet<>();
115 StringTokenizer tokens = new StringTokenizer(supportedLocaleString);
116 while (tokens.hasMoreTokens()) {
117 tagset.add(tokens.nextToken());
118 }
119 return tagset;
120 }
121 }
|
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.cldr;
27
28 import java.security.AccessController;
29 import java.security.PrivilegedActionException;
30 import java.security.PrivilegedExceptionAction;
31 import java.text.spi.BreakIteratorProvider;
32 import java.text.spi.CollatorProvider;
33 import java.util.Arrays;
34 import java.util.Collections;
35 import java.util.HashMap;
36 import java.util.HashSet;
37 import java.util.List;
38 import java.util.Locale;
39 import java.util.Map;
40 import java.util.Objects;
41 import java.util.ServiceLoader;
42 import java.util.Set;
43 import java.util.StringTokenizer;
44 import sun.util.locale.provider.JRELocaleProviderAdapter;
45 import sun.util.locale.provider.LocaleProviderAdapter;
46 import sun.util.locale.provider.LocaleDataMetaInfo;
47
48 /**
49 * LocaleProviderAdapter implementation for the CLDR locale data.
50 *
51 * @author Masayoshi Okutsu
52 * @author Naoto Sato
53 */
54 public class CLDRLocaleProviderAdapter extends JRELocaleProviderAdapter {
55
56 private static final CLDRBaseLocaleDataMetaInfo baseMetaInfo = new CLDRBaseLocaleDataMetaInfo();
57 // Assumption: CLDR has only one non-Base module.
58 private final LocaleDataMetaInfo nonBaseMetaInfo;
59
60 // parent locales map
61 private static Map<Locale, Locale> parentLocalesMap = null;
62
63 public CLDRLocaleProviderAdapter() {
64 try {
65 nonBaseMetaInfo = AccessController.doPrivileged(new PrivilegedExceptionAction<LocaleDataMetaInfo>() {
66 @Override
67 public LocaleDataMetaInfo run() {
68 for (LocaleDataMetaInfo ldmi : ServiceLoader.loadInstalled(LocaleDataMetaInfo.class)) {
69 if (ldmi.getType() == LocaleProviderAdapter.Type.CLDR) {
70 return ldmi;
71 }
72 }
73 return null;
74 }
75 });
76 } catch (Exception e) {
77 // Catch any exception, and fail gracefully as if CLDR locales do not exist.
78 // It's ok ignore it if something wrong happens because there always is the
79 // JRE or FALLBACK LocaleProviderAdapter that will do the right thing.
80 throw new UnsupportedOperationException(e);
81 }
82
83 if (nonBaseMetaInfo == null) {
84 throw new UnsupportedOperationException("CLDR locale data could not be found.");
85 }
86 }
87
88 /**
89 * Returns the type of this LocaleProviderAdapter
90 * @return the type of this
91 */
92 @Override
93 public LocaleProviderAdapter.Type getAdapterType() {
94 return LocaleProviderAdapter.Type.CLDR;
95 }
96
97 @Override
98 public BreakIteratorProvider getBreakIteratorProvider() {
99 return null;
100 }
101
102 @Override
103 public CollatorProvider getCollatorProvider() {
104 return null;
105 }
106
107 @Override
108 public Locale[] getAvailableLocales() {
109 Set<String> all = createLanguageTagSet("AvailableLocales");
110 Locale[] locs = new Locale[all.size()];
111 int index = 0;
112 for (String tag : all) {
113 locs[index++] = Locale.forLanguageTag(tag);
114 }
115 return locs;
116 }
117
118 @Override
119 protected Set<String> createLanguageTagSet(String category) {
120 // Directly call Base tags, as we know it's in the base module.
121 String supportedLocaleString = baseMetaInfo.availableLanguageTags(category);
122 String nonBaseTags = nonBaseMetaInfo.availableLanguageTags(category);
123 if (nonBaseTags != null) {
124 if (supportedLocaleString != null) {
125 supportedLocaleString += " " + nonBaseTags;
126 } else {
127 supportedLocaleString = nonBaseTags;
128 }
129 }
130 if (supportedLocaleString == null) {
131 return Collections.emptySet();
132 }
133 Set<String> tagset = new HashSet<>();
134 StringTokenizer tokens = new StringTokenizer(supportedLocaleString);
135 while (tokens.hasMoreTokens()) {
136 tagset.add(tokens.nextToken());
137 }
138 return tagset;
139 }
140
141 // Implementation of ResourceBundleBasedAdapter
142 @Override
143 public List<Locale> getCandidateLocales(String baseName, Locale locale) {
144 List<Locale> candidates = super.getCandidateLocales(baseName, locale);
145 return applyParentLocales(baseName, candidates);
146 }
147
148 private List<Locale> applyParentLocales(String baseName, List<Locale> candidates) {
149 if (Objects.isNull(parentLocalesMap)) {
150 parentLocalesMap = new HashMap<>();
151 Map<String, String> parentLocales = baseMetaInfo.parentLocales();
152 parentLocales.keySet().forEach(parent -> {
153 Arrays.asList(parentLocales.get(parent).split(" ")).stream().forEach(child -> {
154 parentLocalesMap.put(Locale.forLanguageTag(child),
155 "root".equals(parent) ? Locale.ROOT : Locale.forLanguageTag(parent));
156 });
157 });
158 }
159
160 // check irregular parents
161 for (int i = 0; i < candidates.size(); i++) {
162 Locale l = candidates.get(i);
163 Locale p = parentLocalesMap.get(l);
164 if (!l.equals(Locale.ROOT) &&
165 Objects.nonNull(p) &&
166 !candidates.get(i+1).equals(p)) {
167 List<Locale> applied = candidates.subList(0, i+1);
168 applied.addAll(applyParentLocales(baseName, super.getCandidateLocales(baseName, p)));
169 return applied;
170 }
171 }
172
173 return candidates;
174 }
175
176 @Override
177 public boolean isSupportedProviderLocale(Locale locale, Set<String> langtags) {
178 return Locale.ROOT.equals(locale) ||
179 langtags.contains(locale.stripExtensions().toLanguageTag());
180 }
181 }
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