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package sun.util.locale.provider;

import java.io.IOException;
import java.text.BreakIterator;
import java.text.spi.BreakIteratorProvider;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.Objects;
import java.util.Set;
import sun.text.DictionaryBasedBreakIterator;
import sun.text.RuleBasedBreakIterator;

Concrete implementation of the BreakIteratorProvider class for the JRE LocaleProviderAdapter.
Author:Naoto Sato, Masayoshi Okutsu
/** * Concrete implementation of the {@link java.text.spi.BreakIteratorProvider * BreakIteratorProvider} class for the JRE LocaleProviderAdapter. * * @author Naoto Sato * @author Masayoshi Okutsu */
public class BreakIteratorProviderImpl extends BreakIteratorProvider implements AvailableLanguageTags { private static final int CHARACTER_INDEX = 0; private static final int WORD_INDEX = 1; private static final int LINE_INDEX = 2; private static final int SENTENCE_INDEX = 3; private final LocaleProviderAdapter.Type type; private final Set<String> langtags; public BreakIteratorProviderImpl(LocaleProviderAdapter.Type type, Set<String> langtags) { this.type = type; this.langtags = langtags; }
Returns an array of all locales for which this locale service provider can provide localized objects or names.
Returns:An array of all locales for which this locale service provider can provide localized objects or names.
/** * Returns an array of all locales for which this locale service provider * can provide localized objects or names. * * @return An array of all locales for which this locale service provider * can provide localized objects or names. */
@Override public Locale[] getAvailableLocales() { return LocaleProviderAdapter.toLocaleArray(langtags); }
Returns a new BreakIterator instance for word breaks for the given locale.
Params:
  • locale – the desired locale
Throws:
See Also:
Returns:A break iterator for word breaks
/** * Returns a new <code>BreakIterator</code> instance * for <a href="../BreakIterator.html#word">word breaks</a> * for the given locale. * @param locale the desired locale * @return A break iterator for word breaks * @exception NullPointerException if <code>locale</code> is null * @exception IllegalArgumentException if <code>locale</code> isn't * one of the locales returned from * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() * getAvailableLocales()}. * @see java.text.BreakIterator#getWordInstance(java.util.Locale) */
@Override public BreakIterator getWordInstance(Locale locale) { return getBreakInstance(locale, WORD_INDEX, "WordData", "WordDictionary"); }
Returns a new BreakIterator instance for line breaks for the given locale.
Params:
  • locale – the desired locale
Throws:
See Also:
Returns:A break iterator for line breaks
/** * Returns a new <code>BreakIterator</code> instance * for <a href="../BreakIterator.html#line">line breaks</a> * for the given locale. * @param locale the desired locale * @return A break iterator for line breaks * @exception NullPointerException if <code>locale</code> is null * @exception IllegalArgumentException if <code>locale</code> isn't * one of the locales returned from * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() * getAvailableLocales()}. * @see java.text.BreakIterator#getLineInstance(java.util.Locale) */
@Override public BreakIterator getLineInstance(Locale locale) { return getBreakInstance(locale, LINE_INDEX, "LineData", "LineDictionary"); }
Returns a new BreakIterator instance for character breaks for the given locale.
Params:
  • locale – the desired locale
Throws:
See Also:
Returns:A break iterator for character breaks
/** * Returns a new <code>BreakIterator</code> instance * for <a href="../BreakIterator.html#character">character breaks</a> * for the given locale. * @param locale the desired locale * @return A break iterator for character breaks * @exception NullPointerException if <code>locale</code> is null * @exception IllegalArgumentException if <code>locale</code> isn't * one of the locales returned from * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() * getAvailableLocales()}. * @see java.text.BreakIterator#getCharacterInstance(java.util.Locale) */
@Override public BreakIterator getCharacterInstance(Locale locale) { return getBreakInstance(locale, CHARACTER_INDEX, "CharacterData", "CharacterDictionary"); }
Returns a new BreakIterator instance for sentence breaks for the given locale.
Params:
  • locale – the desired locale
Throws:
See Also:
Returns:A break iterator for sentence breaks
/** * Returns a new <code>BreakIterator</code> instance * for <a href="../BreakIterator.html#sentence">sentence breaks</a> * for the given locale. * @param locale the desired locale * @return A break iterator for sentence breaks * @exception NullPointerException if <code>locale</code> is null * @exception IllegalArgumentException if <code>locale</code> isn't * one of the locales returned from * {@link java.util.spi.LocaleServiceProvider#getAvailableLocales() * getAvailableLocales()}. * @see java.text.BreakIterator#getSentenceInstance(java.util.Locale) */
@Override public BreakIterator getSentenceInstance(Locale locale) { return getBreakInstance(locale, SENTENCE_INDEX, "SentenceData", "SentenceDictionary"); } private BreakIterator getBreakInstance(Locale locale, int type, String ruleName, String dictionaryName) { Objects.requireNonNull(locale); LocaleResources lr = LocaleProviderAdapter.forJRE().getLocaleResources(locale); String[] classNames = (String[]) lr.getBreakIteratorInfo("BreakIteratorClasses"); String ruleFile = (String) lr.getBreakIteratorInfo(ruleName); byte[] ruleData = lr.getBreakIteratorResources(ruleName); try { switch (classNames[type]) { case "RuleBasedBreakIterator": return new RuleBasedBreakIterator(ruleFile, ruleData); case "DictionaryBasedBreakIterator": String dictionaryFile = (String) lr.getBreakIteratorInfo(dictionaryName); byte[] dictionaryData = lr.getBreakIteratorResources(dictionaryName); return new DictionaryBasedBreakIterator(ruleFile, ruleData, dictionaryFile, dictionaryData); default: throw new IllegalArgumentException("Invalid break iterator class \"" + classNames[type] + "\""); } } catch (MissingResourceException | IllegalArgumentException e) { throw new InternalError(e.toString(), e); } } @Override public Set<String> getAvailableLanguageTags() { return langtags; } @Override public boolean isSupportedLocale(Locale locale) { return LocaleProviderAdapter.forType(type).isSupportedProviderLocale(locale, langtags); } }