1 /*
2 * Copyright (c) 1999, 2014, 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.io.IOException;
29 import java.text.BreakIterator;
30 import java.text.spi.BreakIteratorProvider;
31 import java.util.Locale;
32 import java.util.MissingResourceException;
33 import java.util.Set;
34
35 /**
36 * Concrete implementation of the {@link java.text.spi.BreakIteratorProvider
37 * BreakIteratorProvider} class for the JRE LocaleProviderAdapter.
38 *
39 * @author Naoto Sato
40 * @author Masayoshi Okutsu
41 */
42 public class BreakIteratorProviderImpl extends BreakIteratorProvider
43 implements AvailableLanguageTags {
44
45 private static final int CHARACTER_INDEX = 0;
46 private static final int WORD_INDEX = 1;
47 private static final int LINE_INDEX = 2;
48 private static final int SENTENCE_INDEX = 3;
49
50 private final LocaleProviderAdapter.Type type;
51
52 public BreakIteratorProviderImpl(LocaleProviderAdapter.Type type) {
53 this.type = type;
54 }
55
56 /**
57 * Returns an array of all locales for which this locale service provider
58 * can provide localized objects or names.
59 *
60 * @return An array of all locales for which this locale service provider
61 * can provide localized objects or names.
62 */
63 @Override
64 public Locale[] getAvailableLocales() {
65 return LocaleProviderAdapter.toLocaleArray(DateFormatProviderImpl.getLangTags(type));
66 }
67
68 /**
69 * Returns a new <code>BreakIterator</code> instance
70 * for <a href="../BreakIterator.html#word">word breaks</a>
71 * for the given locale.
72 * @param locale the desired locale
73 * @return A break iterator for word breaks
74 * @exception NullPointerException if <code>locale</code> is null
75 * @exception IllegalArgumentException if <code>locale</code> isn't
76 * one of the locales returned from
77 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
78 * getAvailableLocales()}.
79 * @see java.text.BreakIterator#getWordInstance(java.util.Locale)
80 */
81 @Override
82 public BreakIterator getWordInstance(Locale locale) {
83 return getBreakInstance(locale,
84 WORD_INDEX,
85 "WordData",
86 "WordDictionary");
87 }
88
89 /**
90 * Returns a new <code>BreakIterator</code> instance
91 * for <a href="../BreakIterator.html#line">line breaks</a>
92 * for the given locale.
93 * @param locale the desired locale
94 * @return A break iterator for line breaks
95 * @exception NullPointerException if <code>locale</code> is null
96 * @exception IllegalArgumentException if <code>locale</code> isn't
97 * one of the locales returned from
98 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
99 * getAvailableLocales()}.
100 * @see java.text.BreakIterator#getLineInstance(java.util.Locale)
101 */
102 @Override
103 public BreakIterator getLineInstance(Locale locale) {
104 return getBreakInstance(locale,
105 LINE_INDEX,
106 "LineData",
107 "LineDictionary");
108 }
109
110 /**
111 * Returns a new <code>BreakIterator</code> instance
112 * for <a href="../BreakIterator.html#character">character breaks</a>
113 * for the given locale.
114 * @param locale the desired locale
115 * @return A break iterator for character breaks
116 * @exception NullPointerException if <code>locale</code> is null
117 * @exception IllegalArgumentException if <code>locale</code> isn't
118 * one of the locales returned from
119 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
120 * getAvailableLocales()}.
121 * @see java.text.BreakIterator#getCharacterInstance(java.util.Locale)
122 */
123 @Override
124 public BreakIterator getCharacterInstance(Locale locale) {
125 return getBreakInstance(locale,
126 CHARACTER_INDEX,
127 "CharacterData",
128 "CharacterDictionary");
129 }
130
131 /**
132 * Returns a new <code>BreakIterator</code> instance
133 * for <a href="../BreakIterator.html#sentence">sentence breaks</a>
134 * for the given locale.
135 * @param locale the desired locale
136 * @return A break iterator for sentence breaks
137 * @exception NullPointerException if <code>locale</code> is null
138 * @exception IllegalArgumentException if <code>locale</code> isn't
139 * one of the locales returned from
140 * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()
141 * getAvailableLocales()}.
142 * @see java.text.BreakIterator#getSentenceInstance(java.util.Locale)
143 */
144 @Override
145 public BreakIterator getSentenceInstance(Locale locale) {
146 return getBreakInstance(locale,
147 SENTENCE_INDEX,
148 "SentenceData",
149 "SentenceDictionary");
150 }
151
152 private BreakIterator getBreakInstance(Locale locale,
153 int type,
154 String dataName,
155 String dictionaryName) {
156 if (locale == null) {
157 throw new NullPointerException();
158 }
159
160 LocaleResources lr = LocaleProviderAdapter.forJRE().getLocaleResources(locale);
161 String[] classNames = (String[]) lr.getBreakIteratorInfo("BreakIteratorClasses");
162 String dataFile = (String) lr.getBreakIteratorInfo(dataName);
163
164 try {
165 switch (classNames[type]) {
166 case "RuleBasedBreakIterator":
167 return new RuleBasedBreakIterator(dataFile);
168 case "DictionaryBasedBreakIterator":
169 String dictionaryFile = (String) lr.getBreakIteratorInfo(dictionaryName);
170 return new DictionaryBasedBreakIterator(dataFile, dictionaryFile);
171 default:
172 throw new IllegalArgumentException("Invalid break iterator class \"" +
173 classNames[type] + "\"");
174 }
175 } catch (IOException | MissingResourceException | IllegalArgumentException e) {
176 throw new InternalError(e.toString(), e);
177 }
178 }
179
180 @Override
181 public Set<String> getAvailableLanguageTags() {
182 return DateFormatProviderImpl.getLangTags(type);
183 }
184
185 @Override
186 public boolean isSupportedLocale(Locale locale) {
187 return LocaleProviderAdapter.isSupportedLocale(locale, type, DateFormatProviderImpl.getLangTags(type));
188 }
189 }