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International Component for Unicode for Java (ICU4J) is a mature, widely used Java library
providing Unicode and Globalization support
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2009-2016, International Business Machines Corporation and
* others. All Rights Reserved.
*******************************************************************************
*/
package com.ibm.icu.impl;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Map.Entry;
import java.util.MissingResourceException;
import java.util.Set;
import com.ibm.icu.impl.CurrencyData.CurrencyDisplayInfo;
import com.ibm.icu.impl.locale.AsciiUtil;
import com.ibm.icu.lang.UCharacter;
import com.ibm.icu.lang.UScript;
import com.ibm.icu.text.BreakIterator;
import com.ibm.icu.text.CaseMap;
import com.ibm.icu.text.DisplayContext;
import com.ibm.icu.text.DisplayContext.Type;
import com.ibm.icu.text.LocaleDisplayNames;
import com.ibm.icu.util.ULocale;
import com.ibm.icu.util.UResourceBundle;
public class LocaleDisplayNamesImpl extends LocaleDisplayNames {
private final ULocale locale;
private final DialectHandling dialectHandling;
private final DisplayContext capitalization;
private final DisplayContext nameLength;
private final DisplayContext substituteHandling;
private final DataTable langData;
private final DataTable regionData;
// Compiled SimpleFormatter patterns.
private final String separatorFormat;
private final String format;
private final String keyTypeFormat;
private final char formatOpenParen;
private final char formatReplaceOpenParen;
private final char formatCloseParen;
private final char formatReplaceCloseParen;
private final CurrencyDisplayInfo currencyDisplayInfo;
private static final Cache cache = new Cache();
/**
* Capitalization context usage types for locale display names
*/
private enum CapitalizationContextUsage {
LANGUAGE,
SCRIPT,
TERRITORY,
VARIANT,
KEY,
KEYVALUE
}
/**
* Capitalization transforms. For each usage type, indicates whether to titlecase for
* the context specified in capitalization (which we know at construction time).
*/
private boolean[] capitalizationUsage = null;
/**
* Map from resource key to CapitalizationContextUsage value
*/
private static final Map contextUsageTypeMap;
static {
contextUsageTypeMap=new HashMap();
contextUsageTypeMap.put("languages", CapitalizationContextUsage.LANGUAGE);
contextUsageTypeMap.put("script", CapitalizationContextUsage.SCRIPT);
contextUsageTypeMap.put("territory", CapitalizationContextUsage.TERRITORY);
contextUsageTypeMap.put("variant", CapitalizationContextUsage.VARIANT);
contextUsageTypeMap.put("key", CapitalizationContextUsage.KEY);
contextUsageTypeMap.put("keyValue", CapitalizationContextUsage.KEYVALUE);
}
/**
* BreakIterator to use for capitalization
*/
private transient BreakIterator capitalizationBrkIter = null;
private static final CaseMap.Title TO_TITLE_WHOLE_STRING_NO_LOWERCASE =
CaseMap.toTitle().wholeString().noLowercase();
private static String toTitleWholeStringNoLowercase(ULocale locale, String s) {
return TO_TITLE_WHOLE_STRING_NO_LOWERCASE.apply(locale.toLocale(), null, s);
}
public static LocaleDisplayNames getInstance(ULocale locale, DialectHandling dialectHandling) {
synchronized (cache) {
return cache.get(locale, dialectHandling);
}
}
public static LocaleDisplayNames getInstance(ULocale locale, DisplayContext... contexts) {
synchronized (cache) {
return cache.get(locale, contexts);
}
}
private final class CapitalizationContextSink extends UResource.Sink {
boolean hasCapitalizationUsage = false;
@Override
public void put(UResource.Key key, UResource.Value value, boolean noFallback) {
UResource.Table contextsTable = value.getTable();
for (int i = 0; contextsTable.getKeyAndValue(i, key, value); ++i) {
CapitalizationContextUsage usage = contextUsageTypeMap.get(key.toString());
if (usage == null) { continue; };
int[] intVector = value.getIntVector();
if (intVector.length < 2) { continue; }
int titlecaseInt = (capitalization == DisplayContext.CAPITALIZATION_FOR_UI_LIST_OR_MENU)
? intVector[0] : intVector[1];
if (titlecaseInt == 0) { continue; }
capitalizationUsage[usage.ordinal()] = true;
hasCapitalizationUsage = true;
}
}
}
public LocaleDisplayNamesImpl(ULocale locale, DialectHandling dialectHandling) {
this(locale, (dialectHandling==DialectHandling.STANDARD_NAMES)? DisplayContext.STANDARD_NAMES: DisplayContext.DIALECT_NAMES,
DisplayContext.CAPITALIZATION_NONE);
}
public LocaleDisplayNamesImpl(ULocale locale, DisplayContext... contexts) {
DialectHandling dialectHandling = DialectHandling.STANDARD_NAMES;
DisplayContext capitalization = DisplayContext.CAPITALIZATION_NONE;
DisplayContext nameLength = DisplayContext.LENGTH_FULL;
DisplayContext substituteHandling = DisplayContext.SUBSTITUTE;
for (DisplayContext contextItem : contexts) {
switch (contextItem.type()) {
case DIALECT_HANDLING:
dialectHandling = (contextItem.value()==DisplayContext.STANDARD_NAMES.value())?
DialectHandling.STANDARD_NAMES: DialectHandling.DIALECT_NAMES;
break;
case CAPITALIZATION:
capitalization = contextItem;
break;
case DISPLAY_LENGTH:
nameLength = contextItem;
break;
case SUBSTITUTE_HANDLING:
substituteHandling = contextItem;
break;
default:
break;
}
}
this.dialectHandling = dialectHandling;
this.capitalization = capitalization;
this.nameLength = nameLength;
this.substituteHandling = substituteHandling;
this.langData = LangDataTables.impl.get(locale, substituteHandling == DisplayContext.NO_SUBSTITUTE);
this.regionData = RegionDataTables.impl.get(locale, substituteHandling == DisplayContext.NO_SUBSTITUTE);
this.locale = ULocale.ROOT.equals(langData.getLocale()) ? regionData.getLocale() :
langData.getLocale();
// Note, by going through DataTable, this uses table lookup rather than straight lookup.
// That should get us the same data, I think. This way we don't have to explicitly
// load the bundle again. Using direct lookup didn't seem to make an appreciable
// difference in performance.
String sep = langData.get("localeDisplayPattern", "separator");
if (sep == null || "separator".equals(sep)) {
sep = "{0}, {1}";
}
StringBuilder sb = new StringBuilder();
this.separatorFormat = SimpleFormatterImpl.compileToStringMinMaxArguments(sep, sb, 2, 2);
String pattern = langData.get("localeDisplayPattern", "pattern");
if (pattern == null || "pattern".equals(pattern)) {
pattern = "{0} ({1})";
}
this.format = SimpleFormatterImpl.compileToStringMinMaxArguments(pattern, sb, 2, 2);
if (pattern.contains("（")) {
formatOpenParen = '（';
formatCloseParen = '）';
formatReplaceOpenParen = '［';
formatReplaceCloseParen = '］';
} else {
formatOpenParen = '(';
formatCloseParen = ')';
formatReplaceOpenParen = '[';
formatReplaceCloseParen = ']';
}
String keyTypePattern = langData.get("localeDisplayPattern", "keyTypePattern");
if (keyTypePattern == null || "keyTypePattern".equals(keyTypePattern)) {
keyTypePattern = "{0}={1}";
}
this.keyTypeFormat = SimpleFormatterImpl.compileToStringMinMaxArguments(
keyTypePattern, sb, 2, 2);
// Get values from the contextTransforms data if we need them
// Also check whether we will need a break iterator (depends on the data)
boolean needBrkIter = false;
if (capitalization == DisplayContext.CAPITALIZATION_FOR_UI_LIST_OR_MENU ||
capitalization == DisplayContext.CAPITALIZATION_FOR_STANDALONE) {
capitalizationUsage = new boolean[CapitalizationContextUsage.values().length]; // initialized to all false
ICUResourceBundle rb = (ICUResourceBundle)UResourceBundle.getBundleInstance(ICUData.ICU_BASE_NAME, locale);
CapitalizationContextSink sink = new CapitalizationContextSink();
try {
rb.getAllItemsWithFallback("contextTransforms", sink);
}
catch (MissingResourceException e) {
// Silently ignore. Not every locale has contextTransforms.
}
needBrkIter = sink.hasCapitalizationUsage;
}
// Get a sentence break iterator if we will need it
if (needBrkIter || capitalization == DisplayContext.CAPITALIZATION_FOR_BEGINNING_OF_SENTENCE) {
capitalizationBrkIter = BreakIterator.getSentenceInstance(locale);
}
this.currencyDisplayInfo = CurrencyData.provider.getInstance(locale, false);
}
@Override
public ULocale getLocale() {
return locale;
}
@Override
public DialectHandling getDialectHandling() {
return dialectHandling;
}
@Override
public DisplayContext getContext(DisplayContext.Type type) {
DisplayContext result;
switch (type) {
case DIALECT_HANDLING:
result = (dialectHandling==DialectHandling.STANDARD_NAMES)? DisplayContext.STANDARD_NAMES: DisplayContext.DIALECT_NAMES;
break;
case CAPITALIZATION:
result = capitalization;
break;
case DISPLAY_LENGTH:
result = nameLength;
break;
case SUBSTITUTE_HANDLING:
result = substituteHandling;
break;
default:
result = DisplayContext.STANDARD_NAMES; // hmm, we should do something else here
break;
}
return result;
}
private String adjustForUsageAndContext(CapitalizationContextUsage usage, String name) {
if (name != null && name.length() > 0 && UCharacter.isLowerCase(name.codePointAt(0)) &&
(capitalization==DisplayContext.CAPITALIZATION_FOR_BEGINNING_OF_SENTENCE ||
(capitalizationUsage != null && capitalizationUsage[usage.ordinal()]) )) {
// Note, won't have capitalizationUsage != null && capitalizationUsage[usage.ordinal()]
// unless capitalization is CAPITALIZATION_FOR_UI_LIST_OR_MENU or CAPITALIZATION_FOR_STANDALONE
synchronized (this) {
if (capitalizationBrkIter == null) {
// should only happen when deserializing, etc.
capitalizationBrkIter = BreakIterator.getSentenceInstance(locale);
}
return UCharacter.toTitleCase(locale, name, capitalizationBrkIter,
UCharacter.TITLECASE_NO_LOWERCASE | UCharacter.TITLECASE_NO_BREAK_ADJUSTMENT);
}
}
return name;
}
@Override
public String localeDisplayName(ULocale locale) {
return localeDisplayNameInternal(locale);
}
@Override
public String localeDisplayName(Locale locale) {
return localeDisplayNameInternal(ULocale.forLocale(locale));
}
@Override
public String localeDisplayName(String localeId) {
return localeDisplayNameInternal(new ULocale(localeId));
}
// TODO: implement use of capitalization
private String localeDisplayNameInternal(ULocale locale) {
// lang
// lang (script, country, variant, keyword=value, ...)
// script, country, variant, keyword=value, ...
String resultName = null;
String lang = locale.getLanguage();
// Empty basename indicates root locale (keywords are ignored for this).
// For the display name, we treat this as unknown language (ICU-20273).
if (lang.isEmpty()) {
lang = "und";
}
String script = locale.getScript();
String country = locale.getCountry();
String variant = locale.getVariant();
boolean hasScript = script.length() > 0;
boolean hasCountry = country.length() > 0;
boolean hasVariant = variant.length() > 0;
// always have a value for lang
if (dialectHandling == DialectHandling.DIALECT_NAMES) {
do { // loop construct is so we can break early out of search
if (hasScript && hasCountry) {
String langScriptCountry = lang + '_' + script + '_' + country;
String result = localeIdName(langScriptCountry);
if (result != null && !result.equals(langScriptCountry)) {
resultName = result;
hasScript = false;
hasCountry = false;
break;
}
}
if (hasScript) {
String langScript = lang + '_' + script;
String result = localeIdName(langScript);
if (result != null && !result.equals(langScript)) {
resultName = result;
hasScript = false;
break;
}
}
if (hasCountry) {
String langCountry = lang + '_' + country;
String result = localeIdName(langCountry);
if (result != null && !result.equals(langCountry)) {
resultName = result;
hasCountry = false;
break;
}
}
} while (false);
}
if (resultName == null) {
String result = localeIdName(lang);
if (result == null) { return null; }
resultName = result
.replace(formatOpenParen, formatReplaceOpenParen)
.replace(formatCloseParen, formatReplaceCloseParen);
}
StringBuilder buf = new StringBuilder();
if (hasScript) {
// first element, don't need appendWithSep
String result = scriptDisplayNameInContext(script, true);
if (result == null) { return null; }
buf.append(result
.replace(formatOpenParen, formatReplaceOpenParen)
.replace(formatCloseParen, formatReplaceCloseParen));
}
if (hasCountry) {
String result = regionDisplayName(country, true);
if (result == null) { return null; }
appendWithSep(result
.replace(formatOpenParen, formatReplaceOpenParen)
.replace(formatCloseParen, formatReplaceCloseParen), buf);
}
if (hasVariant) {
String result = variantDisplayName(variant, true);
if (result == null) { return null; }
appendWithSep(result
.replace(formatOpenParen, formatReplaceOpenParen)
.replace(formatCloseParen, formatReplaceCloseParen), buf);
}
Iterator keys = locale.getKeywords();
if (keys != null) {
while (keys.hasNext()) {
String key = keys.next();
String value = locale.getKeywordValue(key);
String keyDisplayName = keyDisplayName(key, true);
if (keyDisplayName == null) { return null; }
keyDisplayName = keyDisplayName
.replace(formatOpenParen, formatReplaceOpenParen)
.replace(formatCloseParen, formatReplaceCloseParen);
String valueDisplayName = keyValueDisplayName(key, value, true);
if (valueDisplayName == null) { return null; }
valueDisplayName = valueDisplayName
.replace(formatOpenParen, formatReplaceOpenParen)
.replace(formatCloseParen, formatReplaceCloseParen);
if (!valueDisplayName.equals(value)) {
appendWithSep(valueDisplayName, buf);
} else if (!key.equals(keyDisplayName)) {
String keyValue = SimpleFormatterImpl.formatCompiledPattern(
keyTypeFormat, keyDisplayName, valueDisplayName);
appendWithSep(keyValue, buf);
} else {
appendWithSep(keyDisplayName, buf)
.append("=")
.append(valueDisplayName);
}
}
}
String resultRemainder = null;
if (buf.length() > 0) {
resultRemainder = buf.toString();
}
if (resultRemainder != null) {
resultName = SimpleFormatterImpl.formatCompiledPattern(
format, resultName, resultRemainder);
}
return adjustForUsageAndContext(CapitalizationContextUsage.LANGUAGE, resultName);
}
private String localeIdName(String localeId) {
String locIdName;
if (nameLength == DisplayContext.LENGTH_SHORT) {
locIdName = langData.get("Languages%short", localeId);
if (locIdName != null && !locIdName.equals(localeId)) {
return locIdName;
}
}
locIdName = langData.get("Languages", localeId);
if ((locIdName == null || locIdName.equals(localeId)) && localeId.indexOf('_') < 0) {
// Canonicalize lang and try again, ICU-20870
// (only for language codes without script or region)
ULocale canonLocale = ULocale.createCanonical(localeId);
String canonLocId = canonLocale.getName();
if (nameLength == DisplayContext.LENGTH_SHORT) {
locIdName = langData.get("Languages%short", canonLocId);
if (locIdName != null && !locIdName.equals(canonLocId)) {
return locIdName;
}
}
locIdName = langData.get("Languages", canonLocId);
}
return locIdName;
}
@Override
public String languageDisplayName(String lang) {
// Special case to eliminate non-languages, which pollute our data.
if (lang.equals("root") || lang.indexOf('_') != -1) {
return substituteHandling == DisplayContext.SUBSTITUTE ? lang : null;
}
String langName;
if (nameLength == DisplayContext.LENGTH_SHORT) {
langName = langData.get("Languages%short", lang);
if (langName != null && !langName.equals(lang)) {
return adjustForUsageAndContext(CapitalizationContextUsage.LANGUAGE, langName);
}
}
langName = langData.get("Languages", lang);
if (langName == null || langName.equals(lang)) {
// Canonicalize lang and try again, ICU-20870
ULocale canonLocale = ULocale.createCanonical(lang);
String canonLocId = canonLocale.getName();
if (nameLength == DisplayContext.LENGTH_SHORT) {
langName = langData.get("Languages%short", canonLocId);
if (langName != null && !langName.equals(canonLocId)) {
return adjustForUsageAndContext(CapitalizationContextUsage.LANGUAGE, langName);
}
}
langName = langData.get("Languages", canonLocId);
}
return adjustForUsageAndContext(CapitalizationContextUsage.LANGUAGE, langName);
}
@Override
public String scriptDisplayName(String script) {
String str = langData.get("Scripts%stand-alone", script);
if (str == null || str.equals(script)) {
if (nameLength == DisplayContext.LENGTH_SHORT) {
str = langData.get("Scripts%short", script);
if (str != null && !str.equals(script)) {
return adjustForUsageAndContext(CapitalizationContextUsage.SCRIPT, str);
}
}
str = langData.get("Scripts", script);
}
return adjustForUsageAndContext(CapitalizationContextUsage.SCRIPT, str);
}
private String scriptDisplayNameInContext(String script, boolean skipAdjust) {
if (nameLength == DisplayContext.LENGTH_SHORT) {
String scriptName = langData.get("Scripts%short", script);
if (scriptName != null && !scriptName.equals(script)) {
return skipAdjust? scriptName: adjustForUsageAndContext(CapitalizationContextUsage.SCRIPT, scriptName);
}
}
String scriptName = langData.get("Scripts", script);
return skipAdjust? scriptName: adjustForUsageAndContext(CapitalizationContextUsage.SCRIPT, scriptName);
}
@Override
public String scriptDisplayNameInContext(String script) {
return scriptDisplayNameInContext(script, false);
}
@Override
public String scriptDisplayName(int scriptCode) {
return scriptDisplayName(UScript.getShortName(scriptCode));
}
private String regionDisplayName(String region, boolean skipAdjust) {
if (nameLength == DisplayContext.LENGTH_SHORT) {
String regionName = regionData.get("Countries%short", region);
if (regionName != null && !regionName.equals(region)) {
return skipAdjust? regionName: adjustForUsageAndContext(CapitalizationContextUsage.TERRITORY, regionName);
}
}
String regionName = regionData.get("Countries", region);
return skipAdjust? regionName: adjustForUsageAndContext(CapitalizationContextUsage.TERRITORY, regionName);
}
@Override
public String regionDisplayName(String region) {
return regionDisplayName(region, false);
}
private String variantDisplayName(String variant, boolean skipAdjust) {
// don't have a resource for short variant names
String variantName = langData.get("Variants", variant);
return skipAdjust? variantName: adjustForUsageAndContext(CapitalizationContextUsage.VARIANT, variantName);
}
@Override
public String variantDisplayName(String variant) {
return variantDisplayName(variant, false);
}
private String keyDisplayName(String key, boolean skipAdjust) {
// don't have a resource for short key names
String keyName = langData.get("Keys", key);
return skipAdjust? keyName: adjustForUsageAndContext(CapitalizationContextUsage.KEY, keyName);
}
@Override
public String keyDisplayName(String key) {
return keyDisplayName(key, false);
}
private String keyValueDisplayName(String key, String value, boolean skipAdjust) {
String keyValueName = null;
if (key.equals("currency")) {
keyValueName = currencyDisplayInfo.getName(AsciiUtil.toUpperString(value));
if (keyValueName == null) {
keyValueName = value;
}
} else {
if (nameLength == DisplayContext.LENGTH_SHORT) {
String tmp = langData.get("Types%short", key, value);
if (tmp != null && !tmp.equals(value)) {
keyValueName = tmp;
}
}
if (keyValueName == null) {
keyValueName = langData.get("Types", key, value);
}
}
return skipAdjust? keyValueName: adjustForUsageAndContext(CapitalizationContextUsage.KEYVALUE, keyValueName);
}
@Override
public String keyValueDisplayName(String key, String value) {
return keyValueDisplayName(key, value, false);
}
@Override
public List getUiListCompareWholeItems(Set localeSet, Comparator comparator) {
DisplayContext capContext = getContext(Type.CAPITALIZATION);
List result = new ArrayList();
Map> baseToLocales = new HashMap>();
ULocale.Builder builder = new ULocale.Builder();
for (ULocale locOriginal : localeSet) {
builder.setLocale(locOriginal); // verify well-formed. We do this here so that we consistently throw exception
ULocale loc = ULocale.addLikelySubtags(locOriginal);
ULocale base = new ULocale(loc.getLanguage());
Set locales = baseToLocales.get(base);
if (locales == null) {
baseToLocales.put(base, locales = new HashSet());
}
locales.add(loc);
}
for (Entry> entry : baseToLocales.entrySet()) {
ULocale base = entry.getKey();
Set values = entry.getValue();
if (values.size() == 1) {
ULocale locale = values.iterator().next();
result.add(newRow(ULocale.minimizeSubtags(locale, ULocale.Minimize.FAVOR_SCRIPT), capContext));
} else {
Set scripts = new HashSet();
Set regions = new HashSet();
// need the follow two steps to make sure that unusual scripts or regions are displayed
ULocale maxBase = ULocale.addLikelySubtags(base);
scripts.add(maxBase.getScript());
regions.add(maxBase.getCountry());
for (ULocale locale : values) {
scripts.add(locale.getScript());
regions.add(locale.getCountry());
}
boolean hasScripts = scripts.size() > 1;
boolean hasRegions = regions.size() > 1;
for (ULocale locale : values) {
ULocale.Builder modified = builder.setLocale(locale);
if (!hasScripts) {
modified.setScript("");
}
if (!hasRegions) {
modified.setRegion("");
}
result.add(newRow(modified.build(), capContext));
}
}
}
Collections.sort(result, comparator);
return result;
}
private UiListItem newRow(ULocale modified, DisplayContext capContext) {
ULocale minimized = ULocale.minimizeSubtags(modified, ULocale.Minimize.FAVOR_SCRIPT);
String tempName = modified.getDisplayName(locale);
boolean titlecase = capContext == DisplayContext.CAPITALIZATION_FOR_UI_LIST_OR_MENU;
String nameInDisplayLocale =
titlecase ? toTitleWholeStringNoLowercase(locale, tempName) : tempName;
tempName = modified.getDisplayName(modified);
String nameInSelf = capContext ==
DisplayContext.CAPITALIZATION_FOR_UI_LIST_OR_MENU ?
toTitleWholeStringNoLowercase(modified, tempName) : tempName;
return new UiListItem(minimized, modified, nameInDisplayLocale, nameInSelf);
}
public static class DataTable {
final boolean nullIfNotFound;
DataTable(boolean nullIfNotFound) {
this.nullIfNotFound = nullIfNotFound;
}
ULocale getLocale() {
return ULocale.ROOT;
}
String get(String tableName, String code) {
return get(tableName, null, code);
}
String get(String tableName, String subTableName, String code) {
return nullIfNotFound ? null : code;
}
}
static class ICUDataTable extends DataTable {
private final ICUResourceBundle bundle;
public ICUDataTable(String path, ULocale locale, boolean nullIfNotFound) {
super(nullIfNotFound);
this.bundle = (ICUResourceBundle) UResourceBundle.getBundleInstance(
path, locale.getBaseName());
}
@Override
public ULocale getLocale() {
return bundle.getULocale();
}
@Override
public String get(String tableName, String subTableName, String code) {
return ICUResourceTableAccess.getTableString(bundle, tableName, subTableName,
code, nullIfNotFound ? null : code);
}
}
static abstract class DataTables {
public abstract DataTable get(ULocale locale, boolean nullIfNotFound);
public static DataTables load(String className) {
try {
return (DataTables) Class.forName(className).newInstance();
} catch (Throwable t) {
return new DataTables() {
@Override
public DataTable get(ULocale locale, boolean nullIfNotFound) {
return new DataTable(nullIfNotFound);
}
};
}
}
}
static abstract class ICUDataTables extends DataTables {
private final String path;
protected ICUDataTables(String path) {
this.path = path;
}
@Override
public DataTable get(ULocale locale, boolean nullIfNotFound) {
return new ICUDataTable(path, locale, nullIfNotFound);
}
}
static class LangDataTables {
static final DataTables impl = DataTables.load("com.ibm.icu.impl.ICULangDataTables");
}
static class RegionDataTables {
static final DataTables impl = DataTables.load("com.ibm.icu.impl.ICURegionDataTables");
}
public static enum DataTableType {
LANG, REGION;
}
public static boolean haveData(DataTableType type) {
switch (type) {
case LANG: return LangDataTables.impl instanceof ICUDataTables;
case REGION: return RegionDataTables.impl instanceof ICUDataTables;
default:
throw new IllegalArgumentException("unknown type: " + type);
}
}
private StringBuilder appendWithSep(String s, StringBuilder b) {
if (b.length() == 0) {
b.append(s);
} else {
SimpleFormatterImpl.formatAndReplace(separatorFormat, b, null, b, s);
}
return b;
}
private static class Cache {
private ULocale locale;
private DialectHandling dialectHandling;
private DisplayContext capitalization;
private DisplayContext nameLength;
private DisplayContext substituteHandling;
private LocaleDisplayNames cache;
public LocaleDisplayNames get(ULocale locale, DialectHandling dialectHandling) {
if (!(dialectHandling == this.dialectHandling && DisplayContext.CAPITALIZATION_NONE == this.capitalization &&
DisplayContext.LENGTH_FULL == this.nameLength && DisplayContext.SUBSTITUTE == this.substituteHandling &&
locale.equals(this.locale))) {
this.locale = locale;
this.dialectHandling = dialectHandling;
this.capitalization = DisplayContext.CAPITALIZATION_NONE;
this.nameLength = DisplayContext.LENGTH_FULL;
this.substituteHandling = DisplayContext.SUBSTITUTE;
this.cache = new LocaleDisplayNamesImpl(locale, dialectHandling);
}
return cache;
}
public LocaleDisplayNames get(ULocale locale, DisplayContext... contexts) {
DialectHandling dialectHandlingIn = DialectHandling.STANDARD_NAMES;
DisplayContext capitalizationIn = DisplayContext.CAPITALIZATION_NONE;
DisplayContext nameLengthIn = DisplayContext.LENGTH_FULL;
DisplayContext substituteHandling = DisplayContext.SUBSTITUTE;
for (DisplayContext contextItem : contexts) {
switch (contextItem.type()) {
case DIALECT_HANDLING:
dialectHandlingIn = (contextItem.value()==DisplayContext.STANDARD_NAMES.value())?
DialectHandling.STANDARD_NAMES: DialectHandling.DIALECT_NAMES;
break;
case CAPITALIZATION:
capitalizationIn = contextItem;
break;
case DISPLAY_LENGTH:
nameLengthIn = contextItem;
break;
case SUBSTITUTE_HANDLING:
substituteHandling = contextItem;
break;
default:
break;
}
}
if (!(dialectHandlingIn == this.dialectHandling && capitalizationIn == this.capitalization &&
nameLengthIn == this.nameLength && substituteHandling == this.substituteHandling &&
locale.equals(this.locale))) {
this.locale = locale;
this.dialectHandling = dialectHandlingIn;
this.capitalization = capitalizationIn;
this.nameLength = nameLengthIn;
this.substituteHandling = substituteHandling;
this.cache = new LocaleDisplayNamesImpl(locale, contexts);
}
return cache;
}
}
}