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With inspiration from other libraries
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html#License
/*
**************************************************************************************
* Copyright (C) 2009-2016, International Business Machines Corporation,
* Google, Inc. and others. All Rights Reserved.
**************************************************************************************
*/
package com.ibm.icu.util;
import java.util.MissingResourceException;
import com.ibm.icu.impl.ICUData;
import com.ibm.icu.impl.ICUResourceBundle;
import com.ibm.icu.text.UnicodeSet;
import com.ibm.icu.util.ULocale.Category;
/**
* A class for accessing miscellaneous data in the locale bundles
* @author ram
* @stable ICU 2.8
*/
public final class LocaleData {
// private static final String EXEMPLAR_CHARS = "ExemplarCharacters";
private static final String MEASUREMENT_SYSTEM = "MeasurementSystem";
private static final String PAPER_SIZE = "PaperSize";
private static final String LOCALE_DISPLAY_PATTERN = "localeDisplayPattern";
private static final String PATTERN = "pattern";
private static final String SEPARATOR = "separator";
private boolean noSubstitute;
private ICUResourceBundle bundle;
private ICUResourceBundle langBundle;
/**
* EXType for {@link #getExemplarSet(int, int)}.
* Corresponds to the 'main' (aka 'standard') CLDR exemplars in
*
* http://www.unicode.org/reports/tr35/tr35-general.html#Character_Elements.
* @stable ICU 3.4
*/
public static final int ES_STANDARD = 0;
/**
* EXType for {@link #getExemplarSet(int, int)}.
* Corresponds to the 'auxiliary' CLDR exemplars in
*
* http://www.unicode.org/reports/tr35/tr35-general.html#Character_Elements.
* @stable ICU 3.4
*/
public static final int ES_AUXILIARY = 1;
/**
* EXType for {@link #getExemplarSet(int, int)}.
* Corresponds to the 'index' CLDR exemplars in
*
* http://www.unicode.org/reports/tr35/tr35-general.html#Character_Elements.
* @stable ICU 4.4
*/
public static final int ES_INDEX = 2;
/**
* EXType for {@link #getExemplarSet(int, int)}.
* Corresponds to the 'currencySymbol' CLDR exemplars in
*
* http://www.unicode.org/reports/tr35/tr35-general.html#Character_Elements.
* Note: This type is no longer supported.
* @deprecated ICU 51
*/
@Deprecated
public static final int ES_CURRENCY = 3;
/**
* Corresponds to the 'punctuation' CLDR exemplars in
*
* http://www.unicode.org/reports/tr35/tr35-general.html#Character_Elements.
* EXType for {@link #getExemplarSet(int, int)}.
* @stable ICU 49
*/
public static final int ES_PUNCTUATION = 4;
/**
* Count of EXTypes for {@link #getExemplarSet(int, int)}.
* @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
*/
@Deprecated
public static final int ES_COUNT = 5;
/**
* Delimiter type for {@link #getDelimiter(int)}.
* @stable ICU 3.4
*/
public static final int QUOTATION_START = 0;
/**
* Delimiter type for {@link #getDelimiter(int)}.
* @stable ICU 3.4
*/
public static final int QUOTATION_END = 1;
/**
* Delimiter type for {@link #getDelimiter(int)}.
* @stable ICU 3.4
*/
public static final int ALT_QUOTATION_START = 2;
/**
* Delimiter type for {@link #getDelimiter(int)}.
* @stable ICU 3.4
*/
public static final int ALT_QUOTATION_END = 3;
/**
* Count of delimiter types for {@link #getDelimiter(int)}.
* @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
*/
@Deprecated
public static final int DELIMITER_COUNT = 4;
// private constructor to prevent default construction
///CLOVER:OFF
private LocaleData(){}
///CLOVER:ON
/**
* Returns the set of exemplar characters for a locale. Equivalent to calling {@link #getExemplarSet(ULocale, int, int)} with
* the extype == {@link #ES_STANDARD}.
*
* @param locale Locale for which the exemplar character set
* is to be retrieved.
* @param options Bitmask for options to apply to the exemplar pattern.
* Specify zero to retrieve the exemplar set as it is
* defined in the locale data. Specify
* UnicodeSet.CASE to retrieve a case-folded exemplar
* set. See {@link UnicodeSet#applyPattern(String,
* int)} for a complete list of valid options. The
* IGNORE_SPACE bit is always set, regardless of the
* value of 'options'.
* @return The set of exemplar characters for the given locale.
* @stable ICU 3.0
*/
public static UnicodeSet getExemplarSet(ULocale locale, int options) {
return LocaleData.getInstance(locale).getExemplarSet(options, ES_STANDARD);
}
/**
* Returns the set of exemplar characters for a locale.
* Equivalent to calling new LocaleData(locale).{@link #getExemplarSet(int, int)}.
*
* @param locale Locale for which the exemplar character set
* is to be retrieved.
* @param options Bitmask for options to apply to the exemplar pattern.
* Specify zero to retrieve the exemplar set as it is
* defined in the locale data. Specify
* UnicodeSet.CASE to retrieve a case-folded exemplar
* set. See {@link UnicodeSet#applyPattern(String,
* int)} for a complete list of valid options. The
* IGNORE_SPACE bit is always set, regardless of the
* value of 'options'.
* @param extype The type of exemplar character set to retrieve.
* @return The set of exemplar characters for the given locale.
* @stable ICU 3.0
*/
public static UnicodeSet getExemplarSet(ULocale locale, int options, int extype) {
return LocaleData.getInstance(locale).getExemplarSet(options, extype);
}
/**
* Returns the set of exemplar characters for a locale.
*
* @param options Bitmask for options to apply to the exemplar pattern.
* Specify zero to retrieve the exemplar set as it is
* defined in the locale data. Specify
* UnicodeSet.CASE to retrieve a case-folded exemplar
* set. See {@link UnicodeSet#applyPattern(String,
* int)} for a complete list of valid options. The
* IGNORE_SPACE bit is always set, regardless of the
* value of 'options'.
* @param extype The type of exemplar set to be retrieved,
* ES_STANDARD, ES_INDEX, ES_AUXILIARY, or ES_PUNCTUATION
* @return The set of exemplar characters for the given locale.
* If there is nothing available for the locale,
* then null is returned if {@link #getNoSubstitute()} is true, otherwise the
* root value is returned (which may be UnicodeSet.EMPTY).
* @exception RuntimeException if the extype is invalid.
* @stable ICU 3.4
*/
public UnicodeSet getExemplarSet(int options, int extype) {
String [] exemplarSetTypes = {
"ExemplarCharacters",
"AuxExemplarCharacters",
"ExemplarCharactersIndex",
"ExemplarCharactersCurrency",
"ExemplarCharactersPunctuation"
};
if (extype == ES_CURRENCY) {
// currency symbol exemplar is no longer available
return noSubstitute ? null : UnicodeSet.EMPTY;
}
try{
final String aKey = exemplarSetTypes[extype]; // will throw an out-of-bounds exception
ICUResourceBundle stringBundle = (ICUResourceBundle) bundle.get(aKey);
if (noSubstitute && !bundle.isRoot() && stringBundle.isRoot()) {
return null;
}
String unicodeSetPattern = stringBundle.getString();
return new UnicodeSet(unicodeSetPattern, UnicodeSet.IGNORE_SPACE | options);
} catch (ArrayIndexOutOfBoundsException aiooe) {
throw new IllegalArgumentException(aiooe);
} catch (Exception ex){
return noSubstitute ? null : UnicodeSet.EMPTY;
}
}
/**
* Gets the LocaleData object associated with the ULocale specified in locale
*
* @param locale Locale with thich the locale data object is associated.
* @return A locale data object.
* @stable ICU 3.4
*/
public static final LocaleData getInstance(ULocale locale) {
LocaleData ld = new LocaleData();
ld.bundle = (ICUResourceBundle)UResourceBundle.getBundleInstance(ICUData.ICU_BASE_NAME, locale);
ld.langBundle = (ICUResourceBundle)UResourceBundle.getBundleInstance(ICUData.ICU_LANG_BASE_NAME, locale);
ld.noSubstitute = false;
return ld;
}
/**
* Gets the LocaleData object associated with the default FORMAT locale
*
* @return A locale data object.
* @see Category#FORMAT
* @stable ICU 3.4
*/
public static final LocaleData getInstance() {
return LocaleData.getInstance(ULocale.getDefault(Category.FORMAT));
}
/**
* Sets the "no substitute" behavior of this locale data object.
*
* @param setting Value for the no substitute behavior. If TRUE,
* methods of this locale data object will return
* an error when no data is available for that method,
* given the locale ID supplied to the constructor.
* @stable ICU 3.4
*/
public void setNoSubstitute(boolean setting) {
noSubstitute = setting;
}
/**
* Gets the "no substitute" behavior of this locale data object.
*
* @return Value for the no substitute behavior. If TRUE,
* methods of this locale data object will return
* an error when no data is available for that method,
* given the locale ID supplied to the constructor.
* @stable ICU 3.4
*/
public boolean getNoSubstitute() {
return noSubstitute;
}
private static final String [] DELIMITER_TYPES = {
"quotationStart",
"quotationEnd",
"alternateQuotationStart",
"alternateQuotationEnd"
};
/**
* Retrieves a delimiter string from the locale data.
*
* @param type The type of delimiter string desired. Currently,
* the valid choices are QUOTATION_START, QUOTATION_END,
* ALT_QUOTATION_START, or ALT_QUOTATION_END.
* @return The desired delimiter string.
* @stable ICU 3.4
*/
public String getDelimiter(int type) {
ICUResourceBundle delimitersBundle = (ICUResourceBundle) bundle.get("delimiters");
// Only some of the quotation marks may be here. So we make sure that we do a multilevel fallback.
ICUResourceBundle stringBundle = delimitersBundle.getWithFallback(DELIMITER_TYPES[type]);
if (noSubstitute && !bundle.isRoot() && stringBundle.isRoot()) {
return null;
}
return stringBundle.getString();
}
/**
* Utility for getMeasurementSystem and getPaperSize
*/
private static UResourceBundle measurementTypeBundleForLocale(ULocale locale, String measurementType){
// Much of this is taken from getCalendarType in impl/CalendarUtil.java
UResourceBundle measTypeBundle = null;
String region = ULocale.getRegionForSupplementalData(locale, true);
try {
UResourceBundle rb = UResourceBundle.getBundleInstance(
ICUData.ICU_BASE_NAME,
"supplementalData",
ICUResourceBundle.ICU_DATA_CLASS_LOADER);
UResourceBundle measurementData = rb.get("measurementData");
UResourceBundle measDataBundle = null;
try {
measDataBundle = measurementData.get(region);
measTypeBundle = measDataBundle.get(measurementType);
} catch (MissingResourceException mre) {
// use "001" as fallback
measDataBundle = measurementData.get("001");
measTypeBundle = measDataBundle.get(measurementType);
}
} catch (MissingResourceException mre) {
// fall through
}
return measTypeBundle;
}
/**
* Enumeration for representing the measurement systems.
* @stable ICU 2.8
*/
public static final class MeasurementSystem{
/**
* Measurement system specified by Le Système International d'Unités (SI)
* otherwise known as Metric system.
* @stable ICU 2.8
*/
public static final MeasurementSystem SI = new MeasurementSystem();
/**
* Measurement system followed in the United States of America.
* @stable ICU 2.8
*/
public static final MeasurementSystem US = new MeasurementSystem();
/**
* Mix of metric and imperial units used in Great Britain.
* @stable ICU 55
*/
public static final MeasurementSystem UK = new MeasurementSystem();
private MeasurementSystem() {}
}
/**
* Returns the measurement system used in the locale specified by the locale.
*
* @param locale The locale for which the measurement system to be retrieved.
* @return MeasurementSystem the measurement system used in the locale.
* @stable ICU 3.0
*/
public static final MeasurementSystem getMeasurementSystem(ULocale locale){
UResourceBundle sysBundle = measurementTypeBundleForLocale(locale, MEASUREMENT_SYSTEM);
switch (sysBundle.getInt()) {
case 0: return MeasurementSystem.SI;
case 1: return MeasurementSystem.US;
case 2: return MeasurementSystem.UK;
default:
// return null if the object is null or is not an instance
// of integer indicating an error
return null;
}
}
/**
* A class that represents the size of letter head
* used in the country
* @stable ICU 2.8
*/
public static final class PaperSize{
private int height;
private int width;
private PaperSize(int h, int w){
height = h;
width = w;
}
/**
* Retruns the height of the paper
* @return the height
* @stable ICU 2.8
*/
public int getHeight(){
return height;
}
/**
* Returns the width of the paper
* @return the width
* @stable ICU 2.8
*/
public int getWidth(){
return width;
}
}
/**
* Returns the size of paper used in the locale. The paper sizes returned are always in
* milli-meters.
* @param locale The locale for which the measurement system to be retrieved.
* @return The paper size used in the locale
* @stable ICU 3.0
*/
public static final PaperSize getPaperSize(ULocale locale){
UResourceBundle obj = measurementTypeBundleForLocale(locale, PAPER_SIZE);
int[] size = obj.getIntVector();
return new PaperSize(size[0], size[1]);
}
/**
* Returns LocaleDisplayPattern for this locale, e.g., {0}({1})
* @return locale display pattern as a String.
* @stable ICU 4.2
*/
public String getLocaleDisplayPattern() {
ICUResourceBundle locDispBundle = (ICUResourceBundle) langBundle.get(LOCALE_DISPLAY_PATTERN);
String localeDisplayPattern = locDispBundle.getStringWithFallback(PATTERN);
return localeDisplayPattern;
}
/**
* Returns LocaleDisplaySeparator for this locale.
* @return locale display separator as a char.
* @stable ICU 4.2
*/
public String getLocaleSeparator() {
String sub0 = "{0}";
String sub1 = "{1}";
ICUResourceBundle locDispBundle = (ICUResourceBundle) langBundle.get(LOCALE_DISPLAY_PATTERN);
String localeSeparator = locDispBundle.getStringWithFallback(SEPARATOR);
int index0 = localeSeparator.indexOf(sub0);
int index1 = localeSeparator.indexOf(sub1);
if (index0 >= 0 && index1 >= 0 && index0 <= index1) {
return localeSeparator.substring(index0 + sub0.length(), index1);
}
return localeSeparator;
}
private static VersionInfo gCLDRVersion = null;
/**
* Returns the current CLDR version
* @stable ICU 4.2
*/
public static VersionInfo getCLDRVersion() {
// fetching this data should be idempotent.
if(gCLDRVersion == null) {
// from ZoneMeta.java
UResourceBundle supplementalDataBundle = UResourceBundle.getBundleInstance(ICUData.ICU_BASE_NAME, "supplementalData", ICUResourceBundle.ICU_DATA_CLASS_LOADER);
UResourceBundle cldrVersionBundle = supplementalDataBundle.get("cldrVersion");
gCLDRVersion = VersionInfo.getInstance(cldrVersionBundle.getString());
}
return gCLDRVersion;
}
}