| /* |
| * Copyright (c) 2000, 2015, 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.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. |
| * |
| * @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. |
| */ |
| transient private final int defaultFractionDigits; |
| |
| /** |
| * ISO 4217 numeric code for this currency. |
| * Set from currency data tables. |
| */ |
| transient private final 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 sc* arrays + 1 |
| // - scCutOverTimes: 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 |
| // - scOldCurrencies: old currencies for special case countries |
| // - scNewCurrencies: new currencies for special case countries that are |
| // changing currencies; null for others |
| // - scOldCurrenciesDFD: default fraction digits for old currencies |
| // - scNewCurrenciesDFD: default fraction digits for new currencies, 0 for |
| // countries that are not changing currencies |
| // - otherCurrencies: concatenation of all currency codes that are not the |
| // main currency of a simple country, separated by "-" |
| // - otherCurrenciesDFD: decimal format digits for currencies in otherCurrencies, same order |
| |
| static int formatVersion; |
| static int dataVersion; |
| static int[] mainTable; |
| static long[] scCutOverTimes; |
| static String[] scOldCurrencies; |
| static String[] scNewCurrencies; |
| static int[] scOldCurrenciesDFD; |
| static int[] scNewCurrenciesDFD; |
| static int[] scOldCurrenciesNumericCode; |
| static int[] scNewCurrenciesNumericCode; |
| static String otherCurrencies; |
| static int[] otherCurrenciesDFD; |
| static int[] otherCurrenciesNumericCode; |
| |
| // 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 = 2; |
| |
| static { |
| AccessController.doPrivileged(new PrivilegedAction<Void>() { |
| @Override |
| public Void run() { |
| String homeDir = System.getProperty("java.home"); |
| try { |
| String dataFile = homeDir + File.separator + |
| "lib" + File.separator + "currency.data"; |
| try (DataInputStream dis = new DataInputStream( |
| new BufferedInputStream( |
| new FileInputStream(dataFile)))) { |
| 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(); |
| scCutOverTimes = readLongArray(dis, scCount); |
| scOldCurrencies = readStringArray(dis, scCount); |
| scNewCurrencies = readStringArray(dis, scCount); |
| scOldCurrenciesDFD = readIntArray(dis, scCount); |
| scNewCurrenciesDFD = readIntArray(dis, scCount); |
| scOldCurrenciesNumericCode = readIntArray(dis, scCount); |
| scNewCurrenciesNumericCode = readIntArray(dis, scCount); |
| int ocCount = dis.readInt(); |
| otherCurrencies = dis.readUTF(); |
| otherCurrenciesDFD = readIntArray(dis, ocCount); |
| otherCurrenciesNumericCode = readIntArray(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 = homeDir + 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. |
| 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; |
| } else { |
| // Check for '-' separately so we don't get false hits in the table. |
| if (currencyCode.charAt(2) == '-') { |
| throw new IllegalArgumentException(); |
| } |
| int index = otherCurrencies.indexOf(currencyCode); |
| if (index == -1) { |
| throw new IllegalArgumentException(); |
| } |
| defaultFractionDigits = otherCurrenciesDFD[index / 4]; |
| numericCode = otherCurrenciesNumericCode[index / 4]; |
| } |
| } |
| |
| 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> or its country |
| * 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 = (tableEntry & SPECIAL_CASE_COUNTRY_INDEX_MASK) - SPECIAL_CASE_COUNTRY_INDEX_DELTA; |
| if (scCutOverTimes[index] == Long.MAX_VALUE || System.currentTimeMillis() < scCutOverTimes[index]) { |
| return getInstance(scOldCurrencies[index], scOldCurrenciesDFD[index], |
| scOldCurrenciesNumericCode[index]); |
| } else { |
| return getInstance(scNewCurrencies[index], scNewCurrenciesDFD[index], |
| scNewCurrenciesNumericCode[index]); |
| } |
| } |
| } |
| } |
| |
| /** |
| * 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)); |
| } |
| } |
| } |
| |
| // Now add other currencies |
| StringTokenizer st = new StringTokenizer(otherCurrencies, "-"); |
| while (st.hasMoreElements()) { |
| available.add(getInstance((String)st.nextElement())); |
| } |
| } |
| } |
| |
| @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. |
| * 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; |
| } |
| |
| /** |
| * 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 long[] readLongArray(DataInputStream dis, int count) throws IOException { |
| long[] ret = new long[count]; |
| for (int i = 0; i < count; i++) { |
| ret[i] = dis.readLong(); |
| } |
| |
| return ret; |
| } |
| |
| private static String[] readStringArray(DataInputStream dis, int count) throws IOException { |
| String[] ret = new String[count]; |
| for (int i = 0; i < count; i++) { |
| ret[i] = dis.readUTF(); |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * 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; |
| for (index = 0; index < scOldCurrencies.length; index++) { |
| if (scOldCurrencies[index].equals(code)) { |
| break; |
| } |
| } |
| |
| if (index == scOldCurrencies.length) { |
| // 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); |
| } |
| } |
| } |
| } |
