/*
* @(#)DecimalFormatSymbols.java 1.46 06/02/27
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
/*
* (C) Copyright Taligent, Inc. 1996, 1997 - All Rights Reserved
* (C) Copyright IBM Corp. 1996 - 1998 - All Rights Reserved
*
* The original version of this source code and documentation is copyrighted
* and owned by Taligent, Inc., a wholly-owned subsidiary of IBM. These
* materials are provided under terms of a License Agreement between Taligent
* and Sun. This technology is protected by multiple US and International
* patents. This notice and attribution to Taligent may not be removed.
* Taligent is a registered trademark of Taligent, Inc.
*
*/
package java.text;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.text.spi.DecimalFormatSymbolsProvider;
import java.util.Currency;
import java.util.Hashtable;
import java.util.Locale;
import java.util.ResourceBundle;
import java.util.spi.LocaleServiceProvider;
import sun.util.LocaleServiceProviderPool;
import sun.util.resources.LocaleData;
/**
* This class represents the set of symbols (such as the decimal separator,
* the grouping separator, and so on) needed by <code>DecimalFormat</code>
* to format numbers. <code>DecimalFormat</code> creates for itself an instance of
* <code>DecimalFormatSymbols</code> from its locale data. If you need to change any
* of these symbols, you can get the <code>DecimalFormatSymbols</code> object from
* your <code>DecimalFormat</code> and modify it.
*
* @see java.util.Locale
* @see DecimalFormat
* @version 1.46, 02/27/06
* @author Mark Davis
* @author Alan Liu
*/
public class DecimalFormatSymbols implements Cloneable, Serializable {
/**
* Create a DecimalFormatSymbols object for the default locale.
* This constructor can only construct instances for the locales
* supported by the Java runtime environment, not for those
* supported by installed
* {@link java.text.spi.DecimalFormatSymbolsProvider DecimalFormatSymbolsProvider}
* implementations. For full locale coverage, use the
* {@link #getInstance(Locale) getInstance} method.
*/
public DecimalFormatSymbols() {
initialize( Locale.getDefault() );
}
/**
* Create a DecimalFormatSymbols object for the given locale.
* This constructor can only construct instances for the locales
* supported by the Java runtime environment, not for those
* supported by installed
* {@link java.text.spi.DecimalFormatSymbolsProvider DecimalFormatSymbolsProvider}
* implementations. For full locale coverage, use the
* {@link #getInstance(Locale) getInstance} method.
*
* @exception NullPointerException if <code>locale</code> is null
*/
public DecimalFormatSymbols( Locale locale ) {
initialize( locale );
}
/**
* Returns an array of all locales for which the
* <code>getInstance</code> methods of this class can return
* localized instances.
* The returned array represents the union of locales supported by the Java
* runtime and by installed
* {@link java.text.spi.DecimalFormatSymbolsProvider DecimalFormatSymbolsProvider}
* implementations. It must contain at least a <code>Locale</code>
* instance equal to {@link java.util.Locale#US Locale.US}.
*
* @return An array of locales for which localized
* <code>DecimalFormatSymbols</code> instances are available.
* @since 1.6
*/
public static Locale[] getAvailableLocales() {
LocaleServiceProviderPool pool =
LocaleServiceProviderPool.getPool(DecimalFormatSymbolsProvider.class);
return pool.getAvailableLocales();
}
/**
* Gets the <code>DecimalFormatSymbols</code> instance for the default
* locale. This method provides access to <code>DecimalFormatSymbols</code>
* instances for locales supported by the Java runtime itself as well
* as for those supported by installed
* {@link java.text.spi.DecimalFormatSymbolsProvider
* DecimalFormatSymbolsProvider} implementations.
* @return a <code>DecimalFormatSymbols</code> instance.
* @since 1.6
*/
public static final DecimalFormatSymbols getInstance() {
return getInstance(Locale.getDefault());
}
/**
* Gets the <code>DecimalFormatSymbols</code> instance for the specified
* locale. This method provides access to <code>DecimalFormatSymbols</code>
* instances for locales supported by the Java runtime itself as well
* as for those supported by installed
* {@link java.text.spi.DecimalFormatSymbolsProvider
* DecimalFormatSymbolsProvider} implementations.
* @param locale the desired locale.
* @return a <code>DecimalFormatSymbols</code> instance.
* @exception NullPointerException if <code>locale</code> is null
* @since 1.6
*/
public static final DecimalFormatSymbols getInstance(Locale locale) {
// Check whether a provider can provide an implementation that's closer
// to the requested locale than what the Java runtime itself can provide.
LocaleServiceProviderPool pool =
LocaleServiceProviderPool.getPool(DecimalFormatSymbolsProvider.class);
if (pool.hasProviders()) {
DecimalFormatSymbols providersInstance = pool.getLocalizedObject(
DecimalFormatSymbolsGetter.INSTANCE, locale);
if (providersInstance != null) {
return providersInstance;
}
}
return new DecimalFormatSymbols(locale);
}
/**
* Gets the character used for zero. Different for Arabic, etc.
*/
public char getZeroDigit() {
return zeroDigit;
}
/**
* Sets the character used for zero. Different for Arabic, etc.
*/
public void setZeroDigit(char zeroDigit) {
this.zeroDigit = zeroDigit;
}
/**
* Gets the character used for thousands separator. Different for French, etc.
*/
public char getGroupingSeparator() {
return groupingSeparator;
}
/**
* Sets the character used for thousands separator. Different for French, etc.
*/
public void setGroupingSeparator(char groupingSeparator) {
this.groupingSeparator = groupingSeparator;
}
/**
* Gets the character used for decimal sign. Different for French, etc.
*/
public char getDecimalSeparator() {
return decimalSeparator;
}
/**
* Sets the character used for decimal sign. Different for French, etc.
*/
public void setDecimalSeparator(char decimalSeparator) {
this.decimalSeparator = decimalSeparator;
}
/**
* Gets the character used for per mille sign. Different for Arabic, etc.
*/
public char getPerMill() {
return perMill;
}
/**
* Sets the character used for per mille sign. Different for Arabic, etc.
*/
public void setPerMill(char perMill) {
this.perMill = perMill;
}
/**
* Gets the character used for percent sign. Different for Arabic, etc.
*/
public char getPercent() {
return percent;
}
/**
* Sets the character used for percent sign. Different for Arabic, etc.
*/
public void setPercent(char percent) {
this.percent = percent;
}
/**
* Gets the character used for a digit in a pattern.
*/
public char getDigit() {
return digit;
}
/**
* Sets the character used for a digit in a pattern.
*/
public void setDigit(char digit) {
this.digit = digit;
}
/**
* Gets the character used to separate positive and negative subpatterns
* in a pattern.
*/
public char getPatternSeparator() {
return patternSeparator;
}
/**
* Sets the character used to separate positive and negative subpatterns
* in a pattern.
*/
public void setPatternSeparator(char patternSeparator) {
this.patternSeparator = patternSeparator;
}
/**
* Gets the string used to represent infinity. Almost always left
* unchanged.
*/
public String getInfinity() {
return infinity;
}
/**
* Sets the string used to represent infinity. Almost always left
* unchanged.
*/
public void setInfinity(String infinity) {
this.infinity = infinity;
}
/**
* Gets the string used to represent "not a number". Almost always left
* unchanged.
*/
public String getNaN() {
return NaN;
}
/**
* Sets the string used to represent "not a number". Almost always left
* unchanged.
*/
public void setNaN(String NaN) {
this.NaN = NaN;
}
/**
* Gets the character used to represent minus sign. If no explicit
* negative format is specified, one is formed by prefixing
* minusSign to the positive format.
*/
public char getMinusSign() {
return minusSign;
}
/**
* Sets the character used to represent minus sign. If no explicit
* negative format is specified, one is formed by prefixing
* minusSign to the positive format.
*/
public void setMinusSign(char minusSign) {
this.minusSign = minusSign;
}
/**
* Returns the currency symbol for the currency of these
* DecimalFormatSymbols in their locale.
* @since 1.2
*/
public String getCurrencySymbol()
{
return currencySymbol;
}
/**
* Sets the currency symbol for the currency of these
* DecimalFormatSymbols in their locale.
* @since 1.2
*/
public void setCurrencySymbol(String currency)
{
currencySymbol = currency;
}
/**
* Returns the ISO 4217 currency code of the currency of these
* DecimalFormatSymbols.
* @since 1.2
*/
public String getInternationalCurrencySymbol()
{
return intlCurrencySymbol;
}
/**
* Sets the ISO 4217 currency code of the currency of these
* DecimalFormatSymbols.
* If the currency code is valid (as defined by
* {@link java.util.Currency#getInstance(java.lang.String) Currency.getInstance}),
* this also sets the currency attribute to the corresponding Currency
* instance and the currency symbol attribute to the currency's symbol
* in the DecimalFormatSymbols' locale. If the currency code is not valid,
* then the currency attribute is set to null and the currency symbol
* attribute is not modified.
*
* @see #setCurrency
* @see #setCurrencySymbol
* @since 1.2
*/
public void setInternationalCurrencySymbol(String currencyCode)
{
intlCurrencySymbol = currencyCode;
currency = null;
if (currencyCode != null) {
try {
currency = Currency.getInstance(currencyCode);
currencySymbol = currency.getSymbol();
} catch (IllegalArgumentException e) {
}
}
}
/**
* Gets the currency of these DecimalFormatSymbols. May be null if the
* currency symbol attribute was previously set to a value that's not
* a valid ISO 4217 currency code.
*
* @return the currency used, or null
* @since 1.4
*/
public Currency getCurrency() {
return currency;
}
/**
* Sets the currency of these DecimalFormatSymbols.
* This also sets the currency symbol attribute to the currency's symbol
* in the DecimalFormatSymbols' locale, and the international currency
* symbol attribute to the currency's ISO 4217 currency code.
*
* @param currency the new currency to be used
* @exception NullPointerException if <code>currency</code> is null
* @since 1.4
* @see #setCurrencySymbol
* @see #setInternationalCurrencySymbol
*/
public void setCurrency(Currency currency) {
if (currency == null) {
throw new NullPointerException();
}
this.currency = currency;
intlCurrencySymbol = currency.getCurrencyCode();
currencySymbol = currency.getSymbol(locale);
}
/**
* Returns the monetary decimal separator.
* @since 1.2
*/
public char getMonetaryDecimalSeparator()
{
return monetarySeparator;
}
/**
* Sets the monetary decimal separator.
* @since 1.2
*/
public void setMonetaryDecimalSeparator(char sep)
{
monetarySeparator = sep;
}
//------------------------------------------------------------
// BEGIN Package Private methods ... to be made public later
//------------------------------------------------------------
/**
* Returns the character used to separate the mantissa from the exponent.
*/
char getExponentialSymbol()
{
return exponential;
}
/**
* Returns the string used to separate the mantissa from the exponent.
* Examples: "x10^" for 1.23x10^4, "E" for 1.23E4.
*
* @return the exponent separator string
* @see #setExponentSeparator(java.lang.String)
* @since 1.6
*/
public String getExponentSeparator()
{
return exponentialSeparator;
}
/**
* Sets the character used to separate the mantissa from the exponent.
*/
void setExponentialSymbol(char exp)
{
exponential = exp;
}
/**
* Sets the string used to separate the mantissa from the exponent.
* Examples: "x10^" for 1.23x10^4, "E" for 1.23E4.
*
* @param exp the exponent separator string
* @exception NullPointerException if <code>exp</code> is null
* @see #getExponentSeparator()
* @since 1.6
*/
public void setExponentSeparator(String exp)
{
if (exp == null) {
throw new NullPointerException();
}
exponentialSeparator = exp;
}
//------------------------------------------------------------
// END Package Private methods ... to be made public later
//------------------------------------------------------------
/**
* Standard override.
*/
public Object clone() {
try {
return (DecimalFormatSymbols)super.clone();
// other fields are bit-copied
} catch (CloneNotSupportedException e) {
throw new InternalError();
}
}
/**
* Override equals.
*/
public boolean equals(Object obj) {
if (obj == null) return false;
if (this == obj) return true;
if (getClass() != obj.getClass()) return false;
DecimalFormatSymbols other = (DecimalFormatSymbols) obj;
return (zeroDigit == other.zeroDigit &&
groupingSeparator == other.groupingSeparator &&
decimalSeparator == other.decimalSeparator &&
percent == other.percent &&
perMill == other.perMill &&
digit == other.digit &&
minusSign == other.minusSign &&
patternSeparator == other.patternSeparator &&
infinity.equals(other.infinity) &&
NaN.equals(other.NaN) &&
currencySymbol.equals(other.currencySymbol) &&
intlCurrencySymbol.equals(other.intlCurrencySymbol) &&
currency == other.currency &&
monetarySeparator == other.monetarySeparator &&
exponentialSeparator.equals(other.exponentialSeparator) &&
locale.equals(other.locale));
}
/**
* Override hashCode.
*/
public int hashCode() {
int result = zeroDigit;
result = result * 37 + groupingSeparator;
result = result * 37 + decimalSeparator;
return result;
}
/**
* Initializes the symbols from the FormatData resource bundle.
*/
private void initialize( Locale locale ) {
this.locale = locale;
// get resource bundle data - try the cache first
boolean needCacheUpdate = false;
Object[] data = (Object[]) cachedLocaleData.get(locale);
if (data == null) { /* cache miss */
data = new Object[3];
ResourceBundle rb = LocaleData.getNumberFormatData(locale);
data[0] = rb.getStringArray("NumberElements");
needCacheUpdate = true;
}
String[] numberElements = (String[]) data[0];
decimalSeparator = numberElements[0].charAt(0);
groupingSeparator = numberElements[1].charAt(0);
patternSeparator = numberElements[2].charAt(0);
percent = numberElements[3].charAt(0);
zeroDigit = numberElements[4].charAt(0); //different for Arabic,etc.
digit = numberElements[5].charAt(0);
minusSign = numberElements[6].charAt(0);
exponential = numberElements[7].charAt(0);
exponentialSeparator = numberElements[7]; //string representation new since 1.6
perMill = numberElements[8].charAt(0);
infinity = numberElements[9];
NaN = numberElements[10];
// Try to obtain the currency used in the locale's country.
// Check for empty country string separately because it's a valid
// country ID for Locale (and used for the C locale), but not a valid
// ISO 3166 country code, and exceptions are expensive.
if (!"".equals(locale.getCountry())) {
try {
currency = Currency.getInstance(locale);
} catch (IllegalArgumentException e) {
// use default values below for compatibility
}
}
if (currency != null) {
intlCurrencySymbol = currency.getCurrencyCode();
if (data[1] != null && data[1] == intlCurrencySymbol) {
currencySymbol = (String) data[2];
} else {
currencySymbol = currency.getSymbol(locale);
data[1] = intlCurrencySymbol;
data[2] = currencySymbol;
needCacheUpdate = true;
}
} else {
// default values
intlCurrencySymbol = "XXX";
try {
currency = Currency.getInstance(intlCurrencySymbol);
} catch (IllegalArgumentException e) {
}
currencySymbol = "\u00A4";
}
// Currently the monetary decimal separator is the same as the
// standard decimal separator for all locales that we support.
// If that changes, add a new entry to NumberElements.
monetarySeparator = decimalSeparator;
if (needCacheUpdate) {
cachedLocaleData.put(locale, data);
}
}
/**
* Reads the default serializable fields, provides default values for objects
* in older serial versions, and initializes non-serializable fields.
* If <code>serialVersionOnStream</code>
* is less than 1, initializes <code>monetarySeparator</code> to be
* the same as <code>decimalSeparator</code> and <code>exponential</code>
* to be 'E'.
* If <code>serialVersionOnStream</code> is less than 2,
* initializes <code>locale</code>to the root locale, and initializes
* If <code>serialVersionOnStream</code> is less than 3, it initializes
* <code>exponentialSeparator</code> using <code>exponential</code>.
* Sets <code>serialVersionOnStream</code> back to the maximum allowed value so that
* default serialization will work properly if this object is streamed out again.
* Initializes the currency from the intlCurrencySymbol field.
*
* @since JDK 1.1.6
*/
private void readObject(ObjectInputStream stream)
throws IOException, ClassNotFoundException {
stream.defaultReadObject();
if (serialVersionOnStream < 1) {
// Didn't have monetarySeparator or exponential field;
// use defaults.
monetarySeparator = decimalSeparator;
exponential = 'E';
}
if (serialVersionOnStream < 2) {
// didn't have locale; use root locale
locale = Locale.ROOT;
}
if (serialVersionOnStream < 3) {
// didn't have exponentialSeparator. Create one using exponential
exponentialSeparator = Character.toString(exponential);
}
serialVersionOnStream = currentSerialVersion;
if (intlCurrencySymbol != null) {
try {
currency = Currency.getInstance(intlCurrencySymbol);
} catch (IllegalArgumentException e) {
}
}
}
/**
* Character used for zero.
*
* @serial
* @see #getZeroDigit
*/
private char zeroDigit;
/**
* Character used for thousands separator.
*
* @serial
* @see #getGroupingSeparator
*/
private char groupingSeparator;
/**
* Character used for decimal sign.
*
* @serial
* @see #getDecimalSeparator
*/
private char decimalSeparator;
/**
* Character used for per mille sign.
*
* @serial
* @see #getPerMill
*/
private char perMill;
/**
* Character used for percent sign.
* @serial
* @see #getPercent
*/
private char percent;
/**
* Character used for a digit in a pattern.
*
* @serial
* @see #getDigit
*/
private char digit;
/**
* Character used to separate positive and negative subpatterns
* in a pattern.
*
* @serial
* @see #getPatternSeparator
*/
private char patternSeparator;
/**
* String used to represent infinity.
* @serial
* @see #getInfinity
*/
private String infinity;
/**
* String used to represent "not a number".
* @serial
* @see #getNaN
*/
private String NaN;
/**
* Character used to represent minus sign.
* @serial
* @see #getMinusSign
*/
private char minusSign;
/**
* String denoting the local currency, e.g. "$".
* @serial
* @see #getCurrencySymbol
*/
private String currencySymbol;
/**
* ISO 4217 currency code denoting the local currency, e.g. "USD".
* @serial
* @see #getInternationalCurrencySymbol
*/
private String intlCurrencySymbol;
/**
* The decimal separator used when formatting currency values.
* @serial
* @since JDK 1.1.6
* @see #getMonetaryDecimalSeparator
*/
private char monetarySeparator; // Field new in JDK 1.1.6
/**
* The character used to distinguish the exponent in a number formatted
* in exponential notation, e.g. 'E' for a number such as "1.23E45".
* <p>
* Note that the public API provides no way to set this field,
* even though it is supported by the implementation and the stream format.
* The intent is that this will be added to the API in the future.
*
* @serial
* @since JDK 1.1.6
*/
private char exponential; // Field new in JDK 1.1.6
/**
* The string used to separate the mantissa from the exponent.
* Examples: "x10^" for 1.23x10^4, "E" for 1.23E4.
* <p>
* If both <code>exponential</code> and <code>exponentialSeparator</code>
* exist, this <code>exponentialSeparator</code> has the precedence.
*
* @serial
* @since 1.6
*/
private String exponentialSeparator; // Field new in JDK 1.6
/**
* The locale of these currency format symbols.
*
* @serial
* @since 1.4
*/
private Locale locale;
// currency; only the ISO code is serialized.
private transient Currency currency;
// Proclaim JDK 1.1 FCS compatibility
static final long serialVersionUID = 5772796243397350300L;
// The internal serial version which says which version was written
// - 0 (default) for version up to JDK 1.1.5
// - 1 for version from JDK 1.1.6, which includes two new fields:
// monetarySeparator and exponential.
// - 2 for version from J2SE 1.4, which includes locale field.
// - 3 for version from J2SE 1.6, which includes exponentialSeparator field.
private static final int currentSerialVersion = 3;
/**
* Describes the version of <code>DecimalFormatSymbols</code> present on the stream.
* Possible values are:
* <ul>
* <li><b>0</b> (or uninitialized): versions prior to JDK 1.1.6.
*
* <li><b>1</b>: Versions written by JDK 1.1.6 or later, which include
* two new fields: <code>monetarySeparator</code> and <code>exponential</code>.
* <li><b>2</b>: Versions written by J2SE 1.4 or later, which include a
* new <code>locale</code> field.
* <li><b>3</b>: Versions written by J2SE 1.6 or later, which include a
* new <code>exponentialSeparator</code> field.
* </ul>
* When streaming out a <code>DecimalFormatSymbols</code>, the most recent format
* (corresponding to the highest allowable <code>serialVersionOnStream</code>)
* is always written.
*
* @serial
* @since JDK 1.1.6
*/
private int serialVersionOnStream = currentSerialVersion;
/**
* cache to hold the NumberElements and the Currency
* of a Locale.
*/
private static final Hashtable cachedLocaleData = new Hashtable(3);
/**
* Obtains a DecimalFormatSymbols instance from a DecimalFormatSymbolsProvider
* implementation.
*/
private static class DecimalFormatSymbolsGetter
implements LocaleServiceProviderPool.LocalizedObjectGetter<DecimalFormatSymbolsProvider,
DecimalFormatSymbols> {
private static final DecimalFormatSymbolsGetter INSTANCE =
new DecimalFormatSymbolsGetter();
public DecimalFormatSymbols getObject(
DecimalFormatSymbolsProvider decimalFormatSymbolsProvider,
Locale locale,
String key,
Object... params) {
assert params.length == 0;
return decimalFormatSymbolsProvider.getInstance(locale);
}
}
}
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