--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/java/util/Currency.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,978 @@
+/*
+ * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package java.util;
+
+import java.io.BufferedInputStream;
+import java.io.DataInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileReader;
+import java.io.InputStream;
+import java.io.IOException;
+import java.io.Serializable;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+import java.util.spi.CurrencyNameProvider;
+import sun.util.locale.provider.LocaleServiceProviderPool;
+import sun.util.logging.PlatformLogger;
+
+
+/**
+ * Represents a currency. Currencies are identified by their ISO 4217 currency
+ * codes. Visit the <a href="http://www.iso.org/iso/home/standards/currency_codes.htm">
+ * ISO web site</a> for more information.
+ * <p>
+ * The class is designed so that there's never more than one
+ * <code>Currency</code> instance for any given currency. Therefore, there's
+ * no public constructor. You obtain a <code>Currency</code> instance using
+ * the <code>getInstance</code> methods.
+ * <p>
+ * Users can supersede the Java runtime currency data by means of the system
+ * property {@code java.util.currency.data}. If this system property is
+ * defined then its value is the location of a properties file, the contents of
+ * which are key/value pairs of the ISO 3166 country codes and the ISO 4217
+ * currency data respectively. The value part consists of three ISO 4217 values
+ * of a currency, i.e., an alphabetic code, a numeric code, and a minor unit.
+ * Those three ISO 4217 values are separated by commas.
+ * The lines which start with '#'s are considered comment lines. An optional UTC
+ * timestamp may be specified per currency entry if users need to specify a
+ * cutover date indicating when the new data comes into effect. The timestamp is
+ * appended to the end of the currency properties and uses a comma as a separator.
+ * If a UTC datestamp is present and valid, the JRE will only use the new currency
+ * properties if the current UTC date is later than the date specified at class
+ * loading time. The format of the timestamp must be of ISO 8601 format :
+ * {@code 'yyyy-MM-dd'T'HH:mm:ss'}. For example,
+ * <p>
+ * <code>
+ * #Sample currency properties<br>
+ * JP=JPZ,999,0
+ * </code>
+ * <p>
+ * will supersede the currency data for Japan.
+ *
+ * <p>
+ * <code>
+ * #Sample currency properties with cutover date<br>
+ * JP=JPZ,999,0,2014-01-01T00:00:00
+ * </code>
+ * <p>
+ * will supersede the currency data for Japan if {@code Currency} class is loaded after
+ * 1st January 2014 00:00:00 GMT.
+ * <p>
+ * Where syntactically malformed entries are encountered, the entry is ignored
+ * and the remainder of entries in file are processed. For instances where duplicate
+ * country code entries exist, the behavior of the Currency information for that
+ * {@code Currency} is undefined and the remainder of entries in file are processed.
+ * <p>
+ * It is recommended to use {@link java.math.BigDecimal} class while dealing
+ * with {@code Currency} or monetary values as it provides better handling of floating
+ * point numbers and their operations.
+ *
+ * @see java.math.BigDecimal
+ * @since 1.4
+ */
+public final class Currency implements Serializable {
+
+ private static final long serialVersionUID = -158308464356906721L;
+
+ /**
+ * ISO 4217 currency code for this currency.
+ *
+ * @serial
+ */
+ private final String currencyCode;
+
+ /**
+ * Default fraction digits for this currency.
+ * Set from currency data tables.
+ */
+ private final transient int defaultFractionDigits;
+
+ /**
+ * ISO 4217 numeric code for this currency.
+ * Set from currency data tables.
+ */
+ private final transient int numericCode;
+
+
+ // class data: instance map
+
+ private static ConcurrentMap<String, Currency> instances = new ConcurrentHashMap<>(7);
+ private static HashSet<Currency> available;
+
+ // Class data: currency data obtained from currency.data file.
+ // Purpose:
+ // - determine valid country codes
+ // - determine valid currency codes
+ // - map country codes to currency codes
+ // - obtain default fraction digits for currency codes
+ //
+ // sc = special case; dfd = default fraction digits
+ // Simple countries are those where the country code is a prefix of the
+ // currency code, and there are no known plans to change the currency.
+ //
+ // table formats:
+ // - mainTable:
+ // - maps country code to 32-bit int
+ // - 26*26 entries, corresponding to [A-Z]*[A-Z]
+ // - \u007F -> not valid country
+ // - bits 20-31: unused
+ // - bits 10-19: numeric code (0 to 1023)
+ // - bit 9: 1 - special case, bits 0-4 indicate which one
+ // 0 - simple country, bits 0-4 indicate final char of currency code
+ // - bits 5-8: fraction digits for simple countries, 0 for special cases
+ // - bits 0-4: final char for currency code for simple country, or ID of special case
+ // - special case IDs:
+ // - 0: country has no currency
+ // - other: index into specialCasesList
+
+ static int formatVersion;
+ static int dataVersion;
+ static int[] mainTable;
+ static List<SpecialCaseEntry> specialCasesList;
+ static List<OtherCurrencyEntry> otherCurrenciesList;
+
+ // handy constants - must match definitions in GenerateCurrencyData
+ // magic number
+ private static final int MAGIC_NUMBER = 0x43757244;
+ // number of characters from A to Z
+ private static final int A_TO_Z = ('Z' - 'A') + 1;
+ // entry for invalid country codes
+ private static final int INVALID_COUNTRY_ENTRY = 0x0000007F;
+ // entry for countries without currency
+ private static final int COUNTRY_WITHOUT_CURRENCY_ENTRY = 0x00000200;
+ // mask for simple case country entries
+ private static final int SIMPLE_CASE_COUNTRY_MASK = 0x00000000;
+ // mask for simple case country entry final character
+ private static final int SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK = 0x0000001F;
+ // mask for simple case country entry default currency digits
+ private static final int SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK = 0x000001E0;
+ // shift count for simple case country entry default currency digits
+ private static final int SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT = 5;
+ // maximum number for simple case country entry default currency digits
+ private static final int SIMPLE_CASE_COUNTRY_MAX_DEFAULT_DIGITS = 9;
+ // mask for special case country entries
+ private static final int SPECIAL_CASE_COUNTRY_MASK = 0x00000200;
+ // mask for special case country index
+ private static final int SPECIAL_CASE_COUNTRY_INDEX_MASK = 0x0000001F;
+ // delta from entry index component in main table to index into special case tables
+ private static final int SPECIAL_CASE_COUNTRY_INDEX_DELTA = 1;
+ // mask for distinguishing simple and special case countries
+ private static final int COUNTRY_TYPE_MASK = SIMPLE_CASE_COUNTRY_MASK | SPECIAL_CASE_COUNTRY_MASK;
+ // mask for the numeric code of the currency
+ private static final int NUMERIC_CODE_MASK = 0x000FFC00;
+ // shift count for the numeric code of the currency
+ private static final int NUMERIC_CODE_SHIFT = 10;
+
+ // Currency data format version
+ private static final int VALID_FORMAT_VERSION = 3;
+
+ static {
+ AccessController.doPrivileged(new PrivilegedAction<>() {
+ @Override
+ public Void run() {
+ try {
+ try (InputStream in = getClass().getResourceAsStream("/java/util/currency.data")) {
+ if (in == null) {
+ throw new InternalError("Currency data not found");
+ }
+ DataInputStream dis = new DataInputStream(new BufferedInputStream(in));
+ if (dis.readInt() != MAGIC_NUMBER) {
+ throw new InternalError("Currency data is possibly corrupted");
+ }
+ formatVersion = dis.readInt();
+ if (formatVersion != VALID_FORMAT_VERSION) {
+ throw new InternalError("Currency data format is incorrect");
+ }
+ dataVersion = dis.readInt();
+ mainTable = readIntArray(dis, A_TO_Z * A_TO_Z);
+ int scCount = dis.readInt();
+ specialCasesList = readSpecialCases(dis, scCount);
+ int ocCount = dis.readInt();
+ otherCurrenciesList = readOtherCurrencies(dis, ocCount);
+ }
+ } catch (IOException e) {
+ throw new InternalError(e);
+ }
+
+ // look for the properties file for overrides
+ String propsFile = System.getProperty("java.util.currency.data");
+ if (propsFile == null) {
+ propsFile = System.getProperty("java.home") + File.separator + "lib" +
+ File.separator + "currency.properties";
+ }
+ try {
+ File propFile = new File(propsFile);
+ if (propFile.exists()) {
+ Properties props = new Properties();
+ try (FileReader fr = new FileReader(propFile)) {
+ props.load(fr);
+ }
+ Set<String> keys = props.stringPropertyNames();
+ Pattern propertiesPattern =
+ Pattern.compile("([A-Z]{3})\\s*,\\s*(\\d{3})\\s*,\\s*" +
+ "(\\d+)\\s*,?\\s*(\\d{4}-\\d{2}-\\d{2}T\\d{2}:" +
+ "\\d{2}:\\d{2})?");
+ for (String key : keys) {
+ replaceCurrencyData(propertiesPattern,
+ key.toUpperCase(Locale.ROOT),
+ props.getProperty(key).toUpperCase(Locale.ROOT));
+ }
+ }
+ } catch (IOException e) {
+ info("currency.properties is ignored because of an IOException", e);
+ }
+ return null;
+ }
+ });
+ }
+
+ /**
+ * Constants for retrieving localized names from the name providers.
+ */
+ private static final int SYMBOL = 0;
+ private static final int DISPLAYNAME = 1;
+
+
+ /**
+ * Constructs a <code>Currency</code> instance. The constructor is private
+ * so that we can insure that there's never more than one instance for a
+ * given currency.
+ */
+ private Currency(String currencyCode, int defaultFractionDigits, int numericCode) {
+ this.currencyCode = currencyCode;
+ this.defaultFractionDigits = defaultFractionDigits;
+ this.numericCode = numericCode;
+ }
+
+ /**
+ * Returns the <code>Currency</code> instance for the given currency code.
+ *
+ * @param currencyCode the ISO 4217 code of the currency
+ * @return the <code>Currency</code> instance for the given currency code
+ * @exception NullPointerException if <code>currencyCode</code> is null
+ * @exception IllegalArgumentException if <code>currencyCode</code> is not
+ * a supported ISO 4217 code.
+ */
+ public static Currency getInstance(String currencyCode) {
+ return getInstance(currencyCode, Integer.MIN_VALUE, 0);
+ }
+
+ private static Currency getInstance(String currencyCode, int defaultFractionDigits,
+ int numericCode) {
+ // Try to look up the currency code in the instances table.
+ // This does the null pointer check as a side effect.
+ // Also, if there already is an entry, the currencyCode must be valid.
+ Currency instance = instances.get(currencyCode);
+ if (instance != null) {
+ return instance;
+ }
+
+ if (defaultFractionDigits == Integer.MIN_VALUE) {
+ // Currency code not internally generated, need to verify first
+ // A currency code must have 3 characters and exist in the main table
+ // or in the list of other currencies.
+ boolean found = false;
+ if (currencyCode.length() != 3) {
+ throw new IllegalArgumentException();
+ }
+ char char1 = currencyCode.charAt(0);
+ char char2 = currencyCode.charAt(1);
+ int tableEntry = getMainTableEntry(char1, char2);
+ if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
+ && tableEntry != INVALID_COUNTRY_ENTRY
+ && currencyCode.charAt(2) - 'A' == (tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK)) {
+ defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
+ numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
+ found = true;
+ } else { //special case
+ int[] fractionAndNumericCode = SpecialCaseEntry.findEntry(currencyCode);
+ if (fractionAndNumericCode != null) {
+ defaultFractionDigits = fractionAndNumericCode[0];
+ numericCode = fractionAndNumericCode[1];
+ found = true;
+ }
+ }
+
+ if (!found) {
+ OtherCurrencyEntry ocEntry = OtherCurrencyEntry.findEntry(currencyCode);
+ if (ocEntry == null) {
+ throw new IllegalArgumentException();
+ }
+ defaultFractionDigits = ocEntry.fraction;
+ numericCode = ocEntry.numericCode;
+ }
+ }
+
+ Currency currencyVal =
+ new Currency(currencyCode, defaultFractionDigits, numericCode);
+ instance = instances.putIfAbsent(currencyCode, currencyVal);
+ return (instance != null ? instance : currencyVal);
+ }
+
+ /**
+ * Returns the <code>Currency</code> instance for the country of the
+ * given locale. The language and variant components of the locale
+ * are ignored. The result may vary over time, as countries change their
+ * currencies. For example, for the original member countries of the
+ * European Monetary Union, the method returns the old national currencies
+ * until December 31, 2001, and the Euro from January 1, 2002, local time
+ * of the respective countries.
+ * <p>
+ * The method returns <code>null</code> for territories that don't
+ * have a currency, such as Antarctica.
+ *
+ * @param locale the locale for whose country a <code>Currency</code>
+ * instance is needed
+ * @return the <code>Currency</code> instance for the country of the given
+ * locale, or {@code null}
+ * @exception NullPointerException if <code>locale</code>
+ * is {@code null}
+ * @exception IllegalArgumentException if the country of the given {@code locale}
+ * is not a supported ISO 3166 country code.
+ */
+ public static Currency getInstance(Locale locale) {
+ String country = locale.getCountry();
+ if (country == null) {
+ throw new NullPointerException();
+ }
+
+ if (country.length() != 2) {
+ throw new IllegalArgumentException();
+ }
+
+ char char1 = country.charAt(0);
+ char char2 = country.charAt(1);
+ int tableEntry = getMainTableEntry(char1, char2);
+ if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
+ && tableEntry != INVALID_COUNTRY_ENTRY) {
+ char finalChar = (char) ((tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK) + 'A');
+ int defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
+ int numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
+ StringBuilder sb = new StringBuilder(country);
+ sb.append(finalChar);
+ return getInstance(sb.toString(), defaultFractionDigits, numericCode);
+ } else {
+ // special cases
+ if (tableEntry == INVALID_COUNTRY_ENTRY) {
+ throw new IllegalArgumentException();
+ }
+ if (tableEntry == COUNTRY_WITHOUT_CURRENCY_ENTRY) {
+ return null;
+ } else {
+ int index = SpecialCaseEntry.toIndex(tableEntry);
+ SpecialCaseEntry scEntry = specialCasesList.get(index);
+ if (scEntry.cutOverTime == Long.MAX_VALUE
+ || System.currentTimeMillis() < scEntry.cutOverTime) {
+ return getInstance(scEntry.oldCurrency,
+ scEntry.oldCurrencyFraction,
+ scEntry.oldCurrencyNumericCode);
+ } else {
+ return getInstance(scEntry.newCurrency,
+ scEntry.newCurrencyFraction,
+ scEntry.newCurrencyNumericCode);
+ }
+ }
+ }
+ }
+
+ /**
+ * Gets the set of available currencies. The returned set of currencies
+ * contains all of the available currencies, which may include currencies
+ * that represent obsolete ISO 4217 codes. The set can be modified
+ * without affecting the available currencies in the runtime.
+ *
+ * @return the set of available currencies. If there is no currency
+ * available in the runtime, the returned set is empty.
+ * @since 1.7
+ */
+ public static Set<Currency> getAvailableCurrencies() {
+ synchronized(Currency.class) {
+ if (available == null) {
+ available = new HashSet<>(256);
+
+ // Add simple currencies first
+ for (char c1 = 'A'; c1 <= 'Z'; c1 ++) {
+ for (char c2 = 'A'; c2 <= 'Z'; c2 ++) {
+ int tableEntry = getMainTableEntry(c1, c2);
+ if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
+ && tableEntry != INVALID_COUNTRY_ENTRY) {
+ char finalChar = (char) ((tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK) + 'A');
+ int defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
+ int numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
+ StringBuilder sb = new StringBuilder();
+ sb.append(c1);
+ sb.append(c2);
+ sb.append(finalChar);
+ available.add(getInstance(sb.toString(), defaultFractionDigits, numericCode));
+ } else if ((tableEntry & COUNTRY_TYPE_MASK) == SPECIAL_CASE_COUNTRY_MASK
+ && tableEntry != INVALID_COUNTRY_ENTRY
+ && tableEntry != COUNTRY_WITHOUT_CURRENCY_ENTRY) {
+ int index = SpecialCaseEntry.toIndex(tableEntry);
+ SpecialCaseEntry scEntry = specialCasesList.get(index);
+
+ if (scEntry.cutOverTime == Long.MAX_VALUE
+ || System.currentTimeMillis() < scEntry.cutOverTime) {
+ available.add(getInstance(scEntry.oldCurrency,
+ scEntry.oldCurrencyFraction,
+ scEntry.oldCurrencyNumericCode));
+ } else {
+ available.add(getInstance(scEntry.newCurrency,
+ scEntry.newCurrencyFraction,
+ scEntry.newCurrencyNumericCode));
+ }
+ }
+ }
+ }
+
+ // Now add other currencies
+ for (OtherCurrencyEntry entry : otherCurrenciesList) {
+ available.add(getInstance(entry.currencyCode));
+ }
+ }
+ }
+
+ @SuppressWarnings("unchecked")
+ Set<Currency> result = (Set<Currency>) available.clone();
+ return result;
+ }
+
+ /**
+ * Gets the ISO 4217 currency code of this currency.
+ *
+ * @return the ISO 4217 currency code of this currency.
+ */
+ public String getCurrencyCode() {
+ return currencyCode;
+ }
+
+ /**
+ * Gets the symbol of this currency for the default
+ * {@link Locale.Category#DISPLAY DISPLAY} locale.
+ * For example, for the US Dollar, the symbol is "$" if the default
+ * locale is the US, while for other locales it may be "US$". If no
+ * symbol can be determined, the ISO 4217 currency code is returned.
+ * <p>
+ * This is equivalent to calling
+ * {@link #getSymbol(Locale)
+ * getSymbol(Locale.getDefault(Locale.Category.DISPLAY))}.
+ *
+ * @return the symbol of this currency for the default
+ * {@link Locale.Category#DISPLAY DISPLAY} locale
+ */
+ public String getSymbol() {
+ return getSymbol(Locale.getDefault(Locale.Category.DISPLAY));
+ }
+
+ /**
+ * Gets the symbol of this currency for the specified locale.
+ * For example, for the US Dollar, the symbol is "$" if the specified
+ * locale is the US, while for other locales it may be "US$". If no
+ * symbol can be determined, the ISO 4217 currency code is returned.
+ *
+ * @param locale the locale for which a display name for this currency is
+ * needed
+ * @return the symbol of this currency for the specified locale
+ * @exception NullPointerException if <code>locale</code> is null
+ */
+ public String getSymbol(Locale locale) {
+ LocaleServiceProviderPool pool =
+ LocaleServiceProviderPool.getPool(CurrencyNameProvider.class);
+ String symbol = pool.getLocalizedObject(
+ CurrencyNameGetter.INSTANCE,
+ locale, currencyCode, SYMBOL);
+ if (symbol != null) {
+ return symbol;
+ }
+
+ // use currency code as symbol of last resort
+ return currencyCode;
+ }
+
+ /**
+ * Gets the default number of fraction digits used with this currency.
+ * Note that the number of fraction digits is the same as ISO 4217's
+ * minor unit for the currency.
+ * For example, the default number of fraction digits for the Euro is 2,
+ * while for the Japanese Yen it's 0.
+ * In the case of pseudo-currencies, such as IMF Special Drawing Rights,
+ * -1 is returned.
+ *
+ * @return the default number of fraction digits used with this currency
+ */
+ public int getDefaultFractionDigits() {
+ return defaultFractionDigits;
+ }
+
+ /**
+ * Returns the ISO 4217 numeric code of this currency.
+ *
+ * @return the ISO 4217 numeric code of this currency
+ * @since 1.7
+ */
+ public int getNumericCode() {
+ return numericCode;
+ }
+
+ /**
+ * Returns the 3 digit ISO 4217 numeric code of this currency as a {@code String}.
+ * Unlike {@link getNumericCode()}, which returns the numeric code as {@code int},
+ * this method always returns the numeric code as a 3 digit string.
+ * e.g. a numeric value of 32 would be returned as "032",
+ * and a numeric value of 6 would be returned as "006".
+ *
+ * @return the 3 digit ISO 4217 numeric code of this currency as a {@code String}
+ * @since 9
+ */
+ public String getNumericCodeAsString() {
+ /* numeric code could be returned as a 3 digit string simply by using
+ String.format("%03d",numericCode); which uses regex to parse the format,
+ "%03d" in this case. Parsing a regex gives an extra performance overhead,
+ so String.format() approach is avoided in this scenario.
+ */
+ if (numericCode < 100) {
+ StringBuilder sb = new StringBuilder();
+ sb.append('0');
+ if (numericCode < 10) {
+ sb.append('0');
+ }
+ return sb.append(numericCode).toString();
+ }
+ return String.valueOf(numericCode);
+ }
+
+ /**
+ * Gets the name that is suitable for displaying this currency for
+ * the default {@link Locale.Category#DISPLAY DISPLAY} locale.
+ * If there is no suitable display name found
+ * for the default locale, the ISO 4217 currency code is returned.
+ * <p>
+ * This is equivalent to calling
+ * {@link #getDisplayName(Locale)
+ * getDisplayName(Locale.getDefault(Locale.Category.DISPLAY))}.
+ *
+ * @return the display name of this currency for the default
+ * {@link Locale.Category#DISPLAY DISPLAY} locale
+ * @since 1.7
+ */
+ public String getDisplayName() {
+ return getDisplayName(Locale.getDefault(Locale.Category.DISPLAY));
+ }
+
+ /**
+ * Gets the name that is suitable for displaying this currency for
+ * the specified locale. If there is no suitable display name found
+ * for the specified locale, the ISO 4217 currency code is returned.
+ *
+ * @param locale the locale for which a display name for this currency is
+ * needed
+ * @return the display name of this currency for the specified locale
+ * @exception NullPointerException if <code>locale</code> is null
+ * @since 1.7
+ */
+ public String getDisplayName(Locale locale) {
+ LocaleServiceProviderPool pool =
+ LocaleServiceProviderPool.getPool(CurrencyNameProvider.class);
+ String result = pool.getLocalizedObject(
+ CurrencyNameGetter.INSTANCE,
+ locale, currencyCode, DISPLAYNAME);
+ if (result != null) {
+ return result;
+ }
+
+ // use currency code as symbol of last resort
+ return currencyCode;
+ }
+
+ /**
+ * Returns the ISO 4217 currency code of this currency.
+ *
+ * @return the ISO 4217 currency code of this currency
+ */
+ @Override
+ public String toString() {
+ return currencyCode;
+ }
+
+ /**
+ * Resolves instances being deserialized to a single instance per currency.
+ */
+ private Object readResolve() {
+ return getInstance(currencyCode);
+ }
+
+ /**
+ * Gets the main table entry for the country whose country code consists
+ * of char1 and char2.
+ */
+ private static int getMainTableEntry(char char1, char char2) {
+ if (char1 < 'A' || char1 > 'Z' || char2 < 'A' || char2 > 'Z') {
+ throw new IllegalArgumentException();
+ }
+ return mainTable[(char1 - 'A') * A_TO_Z + (char2 - 'A')];
+ }
+
+ /**
+ * Sets the main table entry for the country whose country code consists
+ * of char1 and char2.
+ */
+ private static void setMainTableEntry(char char1, char char2, int entry) {
+ if (char1 < 'A' || char1 > 'Z' || char2 < 'A' || char2 > 'Z') {
+ throw new IllegalArgumentException();
+ }
+ mainTable[(char1 - 'A') * A_TO_Z + (char2 - 'A')] = entry;
+ }
+
+ /**
+ * Obtains a localized currency names from a CurrencyNameProvider
+ * implementation.
+ */
+ private static class CurrencyNameGetter
+ implements LocaleServiceProviderPool.LocalizedObjectGetter<CurrencyNameProvider,
+ String> {
+ private static final CurrencyNameGetter INSTANCE = new CurrencyNameGetter();
+
+ @Override
+ public String getObject(CurrencyNameProvider currencyNameProvider,
+ Locale locale,
+ String key,
+ Object... params) {
+ assert params.length == 1;
+ int type = (Integer)params[0];
+
+ switch(type) {
+ case SYMBOL:
+ return currencyNameProvider.getSymbol(key, locale);
+ case DISPLAYNAME:
+ return currencyNameProvider.getDisplayName(key, locale);
+ default:
+ assert false; // shouldn't happen
+ }
+
+ return null;
+ }
+ }
+
+ private static int[] readIntArray(DataInputStream dis, int count) throws IOException {
+ int[] ret = new int[count];
+ for (int i = 0; i < count; i++) {
+ ret[i] = dis.readInt();
+ }
+
+ return ret;
+ }
+
+ private static List<SpecialCaseEntry> readSpecialCases(DataInputStream dis,
+ int count)
+ throws IOException {
+
+ List<SpecialCaseEntry> list = new ArrayList<>(count);
+ long cutOverTime;
+ String oldCurrency;
+ String newCurrency;
+ int oldCurrencyFraction;
+ int newCurrencyFraction;
+ int oldCurrencyNumericCode;
+ int newCurrencyNumericCode;
+
+ for (int i = 0; i < count; i++) {
+ cutOverTime = dis.readLong();
+ oldCurrency = dis.readUTF();
+ newCurrency = dis.readUTF();
+ oldCurrencyFraction = dis.readInt();
+ newCurrencyFraction = dis.readInt();
+ oldCurrencyNumericCode = dis.readInt();
+ newCurrencyNumericCode = dis.readInt();
+ SpecialCaseEntry sc = new SpecialCaseEntry(cutOverTime,
+ oldCurrency, newCurrency,
+ oldCurrencyFraction, newCurrencyFraction,
+ oldCurrencyNumericCode, newCurrencyNumericCode);
+ list.add(sc);
+ }
+ return list;
+ }
+
+ private static List<OtherCurrencyEntry> readOtherCurrencies(DataInputStream dis,
+ int count)
+ throws IOException {
+
+ List<OtherCurrencyEntry> list = new ArrayList<>(count);
+ String currencyCode;
+ int fraction;
+ int numericCode;
+
+ for (int i = 0; i < count; i++) {
+ currencyCode = dis.readUTF();
+ fraction = dis.readInt();
+ numericCode = dis.readInt();
+ OtherCurrencyEntry oc = new OtherCurrencyEntry(currencyCode,
+ fraction,
+ numericCode);
+ list.add(oc);
+ }
+ return list;
+ }
+
+ /**
+ * Replaces currency data found in the currencydata.properties file
+ *
+ * @param pattern regex pattern for the properties
+ * @param ctry country code
+ * @param curdata currency data. This is a comma separated string that
+ * consists of "three-letter alphabet code", "three-digit numeric code",
+ * and "one-digit (0-9) default fraction digit".
+ * For example, "JPZ,392,0".
+ * An optional UTC date can be appended to the string (comma separated)
+ * to allow a currency change take effect after date specified.
+ * For example, "JP=JPZ,999,0,2014-01-01T00:00:00" has no effect unless
+ * UTC time is past 1st January 2014 00:00:00 GMT.
+ */
+ private static void replaceCurrencyData(Pattern pattern, String ctry, String curdata) {
+
+ if (ctry.length() != 2) {
+ // ignore invalid country code
+ info("currency.properties entry for " + ctry +
+ " is ignored because of the invalid country code.", null);
+ return;
+ }
+
+ Matcher m = pattern.matcher(curdata);
+ if (!m.find() || (m.group(4) == null && countOccurrences(curdata, ',') >= 3)) {
+ // format is not recognized. ignore the data
+ // if group(4) date string is null and we've 4 values, bad date value
+ info("currency.properties entry for " + ctry +
+ " ignored because the value format is not recognized.", null);
+ return;
+ }
+
+ try {
+ if (m.group(4) != null && !isPastCutoverDate(m.group(4))) {
+ info("currency.properties entry for " + ctry +
+ " ignored since cutover date has not passed :" + curdata, null);
+ return;
+ }
+ } catch (ParseException ex) {
+ info("currency.properties entry for " + ctry +
+ " ignored since exception encountered :" + ex.getMessage(), null);
+ return;
+ }
+
+ String code = m.group(1);
+ int numeric = Integer.parseInt(m.group(2));
+ int entry = numeric << NUMERIC_CODE_SHIFT;
+ int fraction = Integer.parseInt(m.group(3));
+ if (fraction > SIMPLE_CASE_COUNTRY_MAX_DEFAULT_DIGITS) {
+ info("currency.properties entry for " + ctry +
+ " ignored since the fraction is more than " +
+ SIMPLE_CASE_COUNTRY_MAX_DEFAULT_DIGITS + ":" + curdata, null);
+ return;
+ }
+
+ int index = SpecialCaseEntry.indexOf(code, fraction, numeric);
+
+ /* if a country switches from simple case to special case or
+ * one special case to other special case which is not present
+ * in the sc arrays then insert the new entry in special case arrays
+ */
+ if (index == -1 && (ctry.charAt(0) != code.charAt(0)
+ || ctry.charAt(1) != code.charAt(1))) {
+
+ specialCasesList.add(new SpecialCaseEntry(code, fraction, numeric));
+ index = specialCasesList.size() - 1;
+ }
+
+ if (index == -1) {
+ // simple case
+ entry |= (fraction << SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT)
+ | (code.charAt(2) - 'A');
+ } else {
+ // special case
+ entry = SPECIAL_CASE_COUNTRY_MASK
+ | (index + SPECIAL_CASE_COUNTRY_INDEX_DELTA);
+ }
+ setMainTableEntry(ctry.charAt(0), ctry.charAt(1), entry);
+ }
+
+ private static boolean isPastCutoverDate(String s) throws ParseException {
+ SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss", Locale.ROOT);
+ format.setTimeZone(TimeZone.getTimeZone("UTC"));
+ format.setLenient(false);
+ long time = format.parse(s.trim()).getTime();
+ return System.currentTimeMillis() > time;
+
+ }
+
+ private static int countOccurrences(String value, char match) {
+ int count = 0;
+ for (char c : value.toCharArray()) {
+ if (c == match) {
+ ++count;
+ }
+ }
+ return count;
+ }
+
+ private static void info(String message, Throwable t) {
+ PlatformLogger logger = PlatformLogger.getLogger("java.util.Currency");
+ if (logger.isLoggable(PlatformLogger.Level.INFO)) {
+ if (t != null) {
+ logger.info(message, t);
+ } else {
+ logger.info(message);
+ }
+ }
+ }
+
+ /* Used to represent a special case currency entry
+ * - cutOverTime: cut-over time in millis as returned by
+ * System.currentTimeMillis for special case countries that are changing
+ * currencies; Long.MAX_VALUE for countries that are not changing currencies
+ * - oldCurrency: old currencies for special case countries
+ * - newCurrency: new currencies for special case countries that are
+ * changing currencies; null for others
+ * - oldCurrencyFraction: default fraction digits for old currencies
+ * - newCurrencyFraction: default fraction digits for new currencies, 0 for
+ * countries that are not changing currencies
+ * - oldCurrencyNumericCode: numeric code for old currencies
+ * - newCurrencyNumericCode: numeric code for new currencies, 0 for countries
+ * that are not changing currencies
+ */
+ private static class SpecialCaseEntry {
+
+ final private long cutOverTime;
+ final private String oldCurrency;
+ final private String newCurrency;
+ final private int oldCurrencyFraction;
+ final private int newCurrencyFraction;
+ final private int oldCurrencyNumericCode;
+ final private int newCurrencyNumericCode;
+
+ private SpecialCaseEntry(long cutOverTime, String oldCurrency, String newCurrency,
+ int oldCurrencyFraction, int newCurrencyFraction,
+ int oldCurrencyNumericCode, int newCurrencyNumericCode) {
+ this.cutOverTime = cutOverTime;
+ this.oldCurrency = oldCurrency;
+ this.newCurrency = newCurrency;
+ this.oldCurrencyFraction = oldCurrencyFraction;
+ this.newCurrencyFraction = newCurrencyFraction;
+ this.oldCurrencyNumericCode = oldCurrencyNumericCode;
+ this.newCurrencyNumericCode = newCurrencyNumericCode;
+ }
+
+ private SpecialCaseEntry(String currencyCode, int fraction,
+ int numericCode) {
+ this(Long.MAX_VALUE, currencyCode, "", fraction, 0, numericCode, 0);
+ }
+
+ //get the index of the special case entry
+ private static int indexOf(String code, int fraction, int numeric) {
+ int size = specialCasesList.size();
+ for (int index = 0; index < size; index++) {
+ SpecialCaseEntry scEntry = specialCasesList.get(index);
+ if (scEntry.oldCurrency.equals(code)
+ && scEntry.oldCurrencyFraction == fraction
+ && scEntry.oldCurrencyNumericCode == numeric
+ && scEntry.cutOverTime == Long.MAX_VALUE) {
+ return index;
+ }
+ }
+ return -1;
+ }
+
+ // get the fraction and numericCode of the sc currencycode
+ private static int[] findEntry(String code) {
+ int[] fractionAndNumericCode = null;
+ int size = specialCasesList.size();
+ for (int index = 0; index < size; index++) {
+ SpecialCaseEntry scEntry = specialCasesList.get(index);
+ if (scEntry.oldCurrency.equals(code) && (scEntry.cutOverTime == Long.MAX_VALUE
+ || System.currentTimeMillis() < scEntry.cutOverTime)) {
+ //consider only when there is no new currency or cutover time is not passed
+ fractionAndNumericCode = new int[2];
+ fractionAndNumericCode[0] = scEntry.oldCurrencyFraction;
+ fractionAndNumericCode[1] = scEntry.oldCurrencyNumericCode;
+ break;
+ } else if (scEntry.newCurrency.equals(code)
+ && System.currentTimeMillis() >= scEntry.cutOverTime) {
+ //consider only if the cutover time is passed
+ fractionAndNumericCode = new int[2];
+ fractionAndNumericCode[0] = scEntry.newCurrencyFraction;
+ fractionAndNumericCode[1] = scEntry.newCurrencyNumericCode;
+ break;
+ }
+ }
+ return fractionAndNumericCode;
+ }
+
+ // convert the special case entry to sc arrays index
+ private static int toIndex(int tableEntry) {
+ return (tableEntry & SPECIAL_CASE_COUNTRY_INDEX_MASK) - SPECIAL_CASE_COUNTRY_INDEX_DELTA;
+ }
+
+ }
+
+ /* Used to represent Other currencies
+ * - currencyCode: currency codes that are not the main currency
+ * of a simple country
+ * - otherCurrenciesDFD: decimal format digits for other currencies
+ * - otherCurrenciesNumericCode: numeric code for other currencies
+ */
+ private static class OtherCurrencyEntry {
+
+ final private String currencyCode;
+ final private int fraction;
+ final private int numericCode;
+
+ private OtherCurrencyEntry(String currencyCode, int fraction,
+ int numericCode) {
+ this.currencyCode = currencyCode;
+ this.fraction = fraction;
+ this.numericCode = numericCode;
+ }
+
+ //get the instance of the other currency code
+ private static OtherCurrencyEntry findEntry(String code) {
+ int size = otherCurrenciesList.size();
+ for (int index = 0; index < size; index++) {
+ OtherCurrencyEntry ocEntry = otherCurrenciesList.get(index);
+ if (ocEntry.currencyCode.equalsIgnoreCase(code)) {
+ return ocEntry;
+ }
+ }
+ return null;
+ }
+
+ }
+
+}
+
+