1 /*
2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.util;
27
28 import java.io.BufferedInputStream;
29 import java.io.DataInputStream;
30 import java.io.File;
31 import java.io.FileInputStream;
32 import java.io.FileReader;
33 import java.io.IOException;
34 import java.io.Serializable;
35 import java.security.AccessController;
36 import java.security.PrivilegedAction;
37 import java.text.ParseException;
38 import java.text.SimpleDateFormat;
39 import java.util.concurrent.ConcurrentHashMap;
40 import java.util.concurrent.ConcurrentMap;
41 import java.util.regex.Pattern;
42 import java.util.regex.Matcher;
43 import java.util.spi.CurrencyNameProvider;
44 import sun.util.locale.provider.LocaleServiceProviderPool;
45 import sun.util.logging.PlatformLogger;
46
47
48 /**
49 * Represents a currency. Currencies are identified by their ISO 4217 currency
50 * codes. Visit the <a href="http://www.iso.org/iso/en/prods-services/popstds/currencycodes.html">
51 * ISO web site</a> for more information, including a table of
52 * currency codes.
53 * <p>
54 * The class is designed so that there's never more than one
55 * <code>Currency</code> instance for any given currency. Therefore, there's
56 * no public constructor. You obtain a <code>Currency</code> instance using
57 * the <code>getInstance</code> methods.
58 * <p>
59 * Users can supersede the Java runtime currency data by creating a properties
60 * file named <code><JAVA_HOME>/lib/currency.properties</code>. The contents
61 * of the properties file are key/value pairs of the ISO 3166 country codes
62 * and the ISO 4217 currency data respectively. The value part consists of
63 * three ISO 4217 values of a currency, i.e., an alphabetic code, a numeric
64 * code, and a minor unit. Those three ISO 4217 values are separated by commas.
65 * The lines which start with '#'s are considered comment lines. An optional UTC
66 * datestamp may be specified per currency entry if users need to specify a
67 * cutover date indicating when the new data comes into effect. The datestamp is
68 * appended to the end of the currency properties and uses a comma as a separator.
69 * If a UTC datestamp is present and valid, the JRE will only use the new currency
70 * properties if the current UTC date is later than the date specified at class
71 * loading time. The format of date must be {@code 'yyyy-MM-dd-HH-mm-ss'}. For example,
72 * <p>
73 * <code>
74 * #Sample currency properties<br>
75 * JP=JPZ,999,0
76 * </code>
77 * <p>
78 * will supersede the currency data for Japan.
79 *
80 * <p>
81 * <code>
82 * #Sample currency properties with cutover date<br>
83 * JP=JPZ,999,0,2014-01-01-00-00-00
84 * </code>
85 * <p>
86 * will supersede the currency data for Japan if Currency class is loaded after 1st
87 * January 2014 00:00:00 GMT.
88 *
89 * @since 1.4
90 */
91 public final class Currency implements Serializable {
92
93 private static final long serialVersionUID = -158308464356906721L;
94
95 /**
96 * ISO 4217 currency code for this currency.
97 *
98 * @serial
99 */
100 private final String currencyCode;
101
102 /**
103 * Default fraction digits for this currency.
104 * Set from currency data tables.
105 */
106 transient private final int defaultFractionDigits;
107
108 /**
109 * ISO 4217 numeric code for this currency.
110 * Set from currency data tables.
111 */
112 transient private final int numericCode;
113
114
115 // class data: instance map
116
117 private static ConcurrentMap<String, Currency> instances = new ConcurrentHashMap<>(7);
118 private static HashSet<Currency> available;
119
120 // Class data: currency data obtained from currency.data file.
121 // Purpose:
122 // - determine valid country codes
123 // - determine valid currency codes
124 // - map country codes to currency codes
125 // - obtain default fraction digits for currency codes
126 //
127 // sc = special case; dfd = default fraction digits
128 // Simple countries are those where the country code is a prefix of the
129 // currency code, and there are no known plans to change the currency.
130 //
131 // table formats:
132 // - mainTable:
133 // - maps country code to 32-bit int
134 // - 26*26 entries, corresponding to [A-Z]*[A-Z]
135 // - \u007F -> not valid country
136 // - bits 18-31: unused
137 // - bits 8-17: numeric code (0 to 1023)
138 // - bit 7: 1 - special case, bits 0-4 indicate which one
139 // 0 - simple country, bits 0-4 indicate final char of currency code
140 // - bits 5-6: fraction digits for simple countries, 0 for special cases
141 // - bits 0-4: final char for currency code for simple country, or ID of special case
142 // - special case IDs:
143 // - 0: country has no currency
144 // - other: index into sc* arrays + 1
145 // - scCutOverTimes: cut-over time in millis as returned by
146 // System.currentTimeMillis for special case countries that are changing
147 // currencies; Long.MAX_VALUE for countries that are not changing currencies
148 // - scOldCurrencies: old currencies for special case countries
149 // - scNewCurrencies: new currencies for special case countries that are
150 // changing currencies; null for others
151 // - scOldCurrenciesDFD: default fraction digits for old currencies
152 // - scNewCurrenciesDFD: default fraction digits for new currencies, 0 for
153 // countries that are not changing currencies
154 // - otherCurrencies: concatenation of all currency codes that are not the
155 // main currency of a simple country, separated by "-"
156 // - otherCurrenciesDFD: decimal format digits for currencies in otherCurrencies, same order
157
158 static int formatVersion;
159 static int dataVersion;
160 static int[] mainTable;
161 static long[] scCutOverTimes;
162 static String[] scOldCurrencies;
163 static String[] scNewCurrencies;
164 static int[] scOldCurrenciesDFD;
165 static int[] scNewCurrenciesDFD;
166 static int[] scOldCurrenciesNumericCode;
167 static int[] scNewCurrenciesNumericCode;
168 static String otherCurrencies;
169 static int[] otherCurrenciesDFD;
170 static int[] otherCurrenciesNumericCode;
171
172 // handy constants - must match definitions in GenerateCurrencyData
173 // magic number
174 private static final int MAGIC_NUMBER = 0x43757244;
175 // number of characters from A to Z
176 private static final int A_TO_Z = ('Z' - 'A') + 1;
177 // entry for invalid country codes
178 private static final int INVALID_COUNTRY_ENTRY = 0x007F;
179 // entry for countries without currency
180 private static final int COUNTRY_WITHOUT_CURRENCY_ENTRY = 0x0080;
181 // mask for simple case country entries
182 private static final int SIMPLE_CASE_COUNTRY_MASK = 0x0000;
183 // mask for simple case country entry final character
184 private static final int SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK = 0x001F;
185 // mask for simple case country entry default currency digits
186 private static final int SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK = 0x0060;
187 // shift count for simple case country entry default currency digits
188 private static final int SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT = 5;
189 // mask for special case country entries
190 private static final int SPECIAL_CASE_COUNTRY_MASK = 0x0080;
191 // mask for special case country index
192 private static final int SPECIAL_CASE_COUNTRY_INDEX_MASK = 0x001F;
193 // delta from entry index component in main table to index into special case tables
194 private static final int SPECIAL_CASE_COUNTRY_INDEX_DELTA = 1;
195 // mask for distinguishing simple and special case countries
196 private static final int COUNTRY_TYPE_MASK = SIMPLE_CASE_COUNTRY_MASK | SPECIAL_CASE_COUNTRY_MASK;
197 // mask for the numeric code of the currency
198 private static final int NUMERIC_CODE_MASK = 0x0003FF00;
199 // shift count for the numeric code of the currency
200 private static final int NUMERIC_CODE_SHIFT = 8;
201
202 // Currency data format version
203 private static final int VALID_FORMAT_VERSION = 1;
204
205 static {
206 AccessController.doPrivileged(new PrivilegedAction<Void>() {
207 @Override
208 public Void run() {
209 String homeDir = System.getProperty("java.home");
210 try {
211 String dataFile = homeDir + File.separator +
212 "lib" + File.separator + "currency.data";
213 try (DataInputStream dis = new DataInputStream(
214 new BufferedInputStream(
215 new FileInputStream(dataFile)))) {
216 if (dis.readInt() != MAGIC_NUMBER) {
217 throw new InternalError("Currency data is possibly corrupted");
218 }
219 formatVersion = dis.readInt();
220 if (formatVersion != VALID_FORMAT_VERSION) {
221 throw new InternalError("Currency data format is incorrect");
222 }
223 dataVersion = dis.readInt();
224 mainTable = readIntArray(dis, A_TO_Z * A_TO_Z);
225 int scCount = dis.readInt();
226 scCutOverTimes = readLongArray(dis, scCount);
227 scOldCurrencies = readStringArray(dis, scCount);
228 scNewCurrencies = readStringArray(dis, scCount);
229 scOldCurrenciesDFD = readIntArray(dis, scCount);
230 scNewCurrenciesDFD = readIntArray(dis, scCount);
231 scOldCurrenciesNumericCode = readIntArray(dis, scCount);
232 scNewCurrenciesNumericCode = readIntArray(dis, scCount);
233 int ocCount = dis.readInt();
234 otherCurrencies = dis.readUTF();
235 otherCurrenciesDFD = readIntArray(dis, ocCount);
236 otherCurrenciesNumericCode = readIntArray(dis, ocCount);
237 }
238 } catch (IOException e) {
239 throw new InternalError(e);
240 }
241
242 // look for the properties file for overrides
243 try {
244 File propFile = new File(homeDir + File.separator +
245 "lib" + File.separator +
246 "currency.properties");
247 if (propFile.exists()) {
248 Properties props = new Properties();
249 try (FileReader fr = new FileReader(propFile)) {
250 props.load(fr);
251 }
252 Set<String> keys = props.stringPropertyNames();
253 Pattern propertiesPattern =
254 Pattern.compile("([A-Z]{3})\\s*,\\s*(\\d{3})\\s*,\\s*" +
255 "([0-3])\\s*,?\\s*(\\d{4}-\\d{2}-\\d{2}-\\d{2}-" +
256 "\\d{2}-\\d{2})?");
257 for (String key : keys) {
258 replaceCurrencyData(propertiesPattern,
259 key.toUpperCase(Locale.ROOT),
260 props.getProperty(key).toUpperCase(Locale.ROOT));
261 }
262 }
263 } catch (IOException e) {
264 info("currency.properties is ignored because of an IOException", e);
265 }
266 return null;
267 }
268 });
269 }
270
271 /**
272 * Constants for retrieving localized names from the name providers.
273 */
274 private static final int SYMBOL = 0;
275 private static final int DISPLAYNAME = 1;
276
277
278 /**
279 * Constructs a <code>Currency</code> instance. The constructor is private
280 * so that we can insure that there's never more than one instance for a
281 * given currency.
282 */
283 private Currency(String currencyCode, int defaultFractionDigits, int numericCode) {
284 this.currencyCode = currencyCode;
285 this.defaultFractionDigits = defaultFractionDigits;
286 this.numericCode = numericCode;
287 }
288
289 /**
290 * Returns the <code>Currency</code> instance for the given currency code.
291 *
292 * @param currencyCode the ISO 4217 code of the currency
293 * @return the <code>Currency</code> instance for the given currency code
294 * @exception NullPointerException if <code>currencyCode</code> is null
295 * @exception IllegalArgumentException if <code>currencyCode</code> is not
296 * a supported ISO 4217 code.
297 */
298 public static Currency getInstance(String currencyCode) {
299 return getInstance(currencyCode, Integer.MIN_VALUE, 0);
300 }
301
302 private static Currency getInstance(String currencyCode, int defaultFractionDigits,
303 int numericCode) {
304 // Try to look up the currency code in the instances table.
305 // This does the null pointer check as a side effect.
306 // Also, if there already is an entry, the currencyCode must be valid.
307 Currency instance = instances.get(currencyCode);
308 if (instance != null) {
309 return instance;
310 }
311
312 if (defaultFractionDigits == Integer.MIN_VALUE) {
313 // Currency code not internally generated, need to verify first
314 // A currency code must have 3 characters and exist in the main table
315 // or in the list of other currencies.
316 if (currencyCode.length() != 3) {
317 throw new IllegalArgumentException();
318 }
319 char char1 = currencyCode.charAt(0);
320 char char2 = currencyCode.charAt(1);
321 int tableEntry = getMainTableEntry(char1, char2);
322 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
323 && tableEntry != INVALID_COUNTRY_ENTRY
324 && currencyCode.charAt(2) - 'A' == (tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK)) {
325 defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
326 numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
327 } else {
328 // Check for '-' separately so we don't get false hits in the table.
329 if (currencyCode.charAt(2) == '-') {
330 throw new IllegalArgumentException();
331 }
332 int index = otherCurrencies.indexOf(currencyCode);
333 if (index == -1) {
334 throw new IllegalArgumentException();
335 }
336 defaultFractionDigits = otherCurrenciesDFD[index / 4];
337 numericCode = otherCurrenciesNumericCode[index / 4];
338 }
339 }
340
341 Currency currencyVal =
342 new Currency(currencyCode, defaultFractionDigits, numericCode);
343 instance = instances.putIfAbsent(currencyCode, currencyVal);
344 return (instance != null ? instance : currencyVal);
345 }
346
347 /**
348 * Returns the <code>Currency</code> instance for the country of the
349 * given locale. The language and variant components of the locale
350 * are ignored. The result may vary over time, as countries change their
351 * currencies. For example, for the original member countries of the
352 * European Monetary Union, the method returns the old national currencies
353 * until December 31, 2001, and the Euro from January 1, 2002, local time
354 * of the respective countries.
355 * <p>
356 * The method returns <code>null</code> for territories that don't
357 * have a currency, such as Antarctica.
358 *
359 * @param locale the locale for whose country a <code>Currency</code>
360 * instance is needed
361 * @return the <code>Currency</code> instance for the country of the given
362 * locale, or {@code null}
363 * @exception NullPointerException if <code>locale</code> or its country
364 * code is {@code null}
365 * @exception IllegalArgumentException if the country of the given {@code locale}
366 * is not a supported ISO 3166 country code.
367 */
368 public static Currency getInstance(Locale locale) {
369 String country = locale.getCountry();
370 if (country == null) {
371 throw new NullPointerException();
372 }
373
374 if (country.length() != 2) {
375 throw new IllegalArgumentException();
376 }
377
378 char char1 = country.charAt(0);
379 char char2 = country.charAt(1);
380 int tableEntry = getMainTableEntry(char1, char2);
381 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
382 && tableEntry != INVALID_COUNTRY_ENTRY) {
383 char finalChar = (char) ((tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK) + 'A');
384 int defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
385 int numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
386 StringBuilder sb = new StringBuilder(country);
387 sb.append(finalChar);
388 return getInstance(sb.toString(), defaultFractionDigits, numericCode);
389 } else {
390 // special cases
391 if (tableEntry == INVALID_COUNTRY_ENTRY) {
392 throw new IllegalArgumentException();
393 }
394 if (tableEntry == COUNTRY_WITHOUT_CURRENCY_ENTRY) {
395 return null;
396 } else {
397 int index = (tableEntry & SPECIAL_CASE_COUNTRY_INDEX_MASK) - SPECIAL_CASE_COUNTRY_INDEX_DELTA;
398 if (scCutOverTimes[index] == Long.MAX_VALUE || System.currentTimeMillis() < scCutOverTimes[index]) {
399 return getInstance(scOldCurrencies[index], scOldCurrenciesDFD[index],
400 scOldCurrenciesNumericCode[index]);
401 } else {
402 return getInstance(scNewCurrencies[index], scNewCurrenciesDFD[index],
403 scNewCurrenciesNumericCode[index]);
404 }
405 }
406 }
407 }
408
409 /**
410 * Gets the set of available currencies. The returned set of currencies
411 * contains all of the available currencies, which may include currencies
412 * that represent obsolete ISO 4217 codes. The set can be modified
413 * without affecting the available currencies in the runtime.
414 *
415 * @return the set of available currencies. If there is no currency
416 * available in the runtime, the returned set is empty.
417 * @since 1.7
418 */
419 public static Set<Currency> getAvailableCurrencies() {
420 synchronized(Currency.class) {
421 if (available == null) {
422 available = new HashSet<>(256);
423
424 // Add simple currencies first
425 for (char c1 = 'A'; c1 <= 'Z'; c1 ++) {
426 for (char c2 = 'A'; c2 <= 'Z'; c2 ++) {
427 int tableEntry = getMainTableEntry(c1, c2);
428 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
429 && tableEntry != INVALID_COUNTRY_ENTRY) {
430 char finalChar = (char) ((tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK) + 'A');
431 int defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
432 int numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
433 StringBuilder sb = new StringBuilder();
434 sb.append(c1);
435 sb.append(c2);
436 sb.append(finalChar);
437 available.add(getInstance(sb.toString(), defaultFractionDigits, numericCode));
438 }
439 }
440 }
441
442 // Now add other currencies
443 StringTokenizer st = new StringTokenizer(otherCurrencies, "-");
444 while (st.hasMoreElements()) {
445 available.add(getInstance((String)st.nextElement()));
446 }
447 }
448 }
449
450 @SuppressWarnings("unchecked")
451 Set<Currency> result = (Set<Currency>) available.clone();
452 return result;
453 }
454
455 /**
456 * Gets the ISO 4217 currency code of this currency.
457 *
458 * @return the ISO 4217 currency code of this currency.
459 */
460 public String getCurrencyCode() {
461 return currencyCode;
462 }
463
464 /**
465 * Gets the symbol of this currency for the default locale.
466 * For example, for the US Dollar, the symbol is "$" if the default
467 * locale is the US, while for other locales it may be "US$". If no
468 * symbol can be determined, the ISO 4217 currency code is returned.
469 *
470 * @return the symbol of this currency for the default locale
471 */
472 public String getSymbol() {
473 return getSymbol(Locale.getDefault(Locale.Category.DISPLAY));
474 }
475
476 /**
477 * Gets the symbol of this currency for the specified locale.
478 * For example, for the US Dollar, the symbol is "$" if the specified
479 * locale is the US, while for other locales it may be "US$". If no
480 * symbol can be determined, the ISO 4217 currency code is returned.
481 *
482 * @param locale the locale for which a display name for this currency is
483 * needed
484 * @return the symbol of this currency for the specified locale
485 * @exception NullPointerException if <code>locale</code> is null
486 */
487 public String getSymbol(Locale locale) {
488 LocaleServiceProviderPool pool =
489 LocaleServiceProviderPool.getPool(CurrencyNameProvider.class);
490 String symbol = pool.getLocalizedObject(
491 CurrencyNameGetter.INSTANCE,
492 locale, currencyCode, SYMBOL);
493 if (symbol != null) {
494 return symbol;
495 }
496
497 // use currency code as symbol of last resort
498 return currencyCode;
499 }
500
501 /**
502 * Gets the default number of fraction digits used with this currency.
503 * For example, the default number of fraction digits for the Euro is 2,
504 * while for the Japanese Yen it's 0.
505 * In the case of pseudo-currencies, such as IMF Special Drawing Rights,
506 * -1 is returned.
507 *
508 * @return the default number of fraction digits used with this currency
509 */
510 public int getDefaultFractionDigits() {
511 return defaultFractionDigits;
512 }
513
514 /**
515 * Returns the ISO 4217 numeric code of this currency.
516 *
517 * @return the ISO 4217 numeric code of this currency
518 * @since 1.7
519 */
520 public int getNumericCode() {
521 return numericCode;
522 }
523
524 /**
525 * Gets the name that is suitable for displaying this currency for
526 * the default locale. If there is no suitable display name found
527 * for the default locale, the ISO 4217 currency code is returned.
528 *
529 * @return the display name of this currency for the default locale
530 * @since 1.7
531 */
532 public String getDisplayName() {
533 return getDisplayName(Locale.getDefault(Locale.Category.DISPLAY));
534 }
535
536 /**
537 * Gets the name that is suitable for displaying this currency for
538 * the specified locale. If there is no suitable display name found
539 * for the specified locale, the ISO 4217 currency code is returned.
540 *
541 * @param locale the locale for which a display name for this currency is
542 * needed
543 * @return the display name of this currency for the specified locale
544 * @exception NullPointerException if <code>locale</code> is null
545 * @since 1.7
546 */
547 public String getDisplayName(Locale locale) {
548 LocaleServiceProviderPool pool =
549 LocaleServiceProviderPool.getPool(CurrencyNameProvider.class);
550 String result = pool.getLocalizedObject(
551 CurrencyNameGetter.INSTANCE,
552 locale, currencyCode, DISPLAYNAME);
553 if (result != null) {
554 return result;
555 }
556
557 // use currency code as symbol of last resort
558 return currencyCode;
559 }
560
561 /**
562 * Returns the ISO 4217 currency code of this currency.
563 *
564 * @return the ISO 4217 currency code of this currency
565 */
566 @Override
567 public String toString() {
568 return currencyCode;
569 }
570
571 /**
572 * Resolves instances being deserialized to a single instance per currency.
573 */
574 private Object readResolve() {
575 return getInstance(currencyCode);
576 }
577
578 /**
579 * Gets the main table entry for the country whose country code consists
580 * of char1 and char2.
581 */
582 private static int getMainTableEntry(char char1, char char2) {
583 if (char1 < 'A' || char1 > 'Z' || char2 < 'A' || char2 > 'Z') {
584 throw new IllegalArgumentException();
585 }
586 return mainTable[(char1 - 'A') * A_TO_Z + (char2 - 'A')];
587 }
588
589 /**
590 * Sets the main table entry for the country whose country code consists
591 * of char1 and char2.
592 */
593 private static void setMainTableEntry(char char1, char char2, int entry) {
594 if (char1 < 'A' || char1 > 'Z' || char2 < 'A' || char2 > 'Z') {
595 throw new IllegalArgumentException();
596 }
597 mainTable[(char1 - 'A') * A_TO_Z + (char2 - 'A')] = entry;
598 }
599
600 /**
601 * Obtains a localized currency names from a CurrencyNameProvider
602 * implementation.
603 */
604 private static class CurrencyNameGetter
605 implements LocaleServiceProviderPool.LocalizedObjectGetter<CurrencyNameProvider,
606 String> {
607 private static final CurrencyNameGetter INSTANCE = new CurrencyNameGetter();
608
609 @Override
610 public String getObject(CurrencyNameProvider currencyNameProvider,
611 Locale locale,
612 String key,
613 Object... params) {
614 assert params.length == 1;
615 int type = (Integer)params[0];
616
617 switch(type) {
618 case SYMBOL:
619 return currencyNameProvider.getSymbol(key, locale);
620 case DISPLAYNAME:
621 return currencyNameProvider.getDisplayName(key, locale);
622 default:
623 assert false; // shouldn't happen
624 }
625
626 return null;
627 }
628 }
629
630 private static int[] readIntArray(DataInputStream dis, int count) throws IOException {
631 int[] ret = new int[count];
632 for (int i = 0; i < count; i++) {
633 ret[i] = dis.readInt();
634 }
635
636 return ret;
637 }
638
639 private static long[] readLongArray(DataInputStream dis, int count) throws IOException {
640 long[] ret = new long[count];
641 for (int i = 0; i < count; i++) {
642 ret[i] = dis.readLong();
643 }
644
645 return ret;
646 }
647
648 private static String[] readStringArray(DataInputStream dis, int count) throws IOException {
649 String[] ret = new String[count];
650 for (int i = 0; i < count; i++) {
651 ret[i] = dis.readUTF();
652 }
653
654 return ret;
655 }
656
657 /**
658 * Replaces currency data found in the currencydata.properties file
659 *
660 * @param pattern regex pattern for the properties
661 * @param ctry country code
662 * @param data currency data. This is a comma separated string that
663 * consists of "three-letter alphabet code", "three-digit numeric code",
664 * and "one-digit (0,1,2, or 3) default fraction digit".
665 * For example, "JPZ,392,0".
666 * An optional GMT date can be appended to the string (comma separated)
667 * to allow a currency change take effect after date specified.
668 * For example, "JP=JPZ,999,0,2014-01-01-00-00-00" has no effect unless
669 * GMT time is past 1st January 2014 00:00:00 GMT.
670 */
671 private static void replaceCurrencyData(Pattern pattern, String ctry, String curdata) {
672
673 if (ctry.length() != 2) {
674 // ignore invalid country code
675 info("currency.properties entry for " + ctry +
676 " is ignored because of the invalid country code.", null);
677 return;
678 }
679
680 Matcher m = pattern.matcher(curdata);
681 if (!m.find() || (m.group(4) == null && countOccurrences(curdata, ',') == 3)) {
682 // format is not recognized. ignore the data
683 // if group(4) date string is null and we've 4 values, bad date value
684 info("currency.properties entry for " + ctry +
685 " ignored because the value format is not recognized.", null);
686 return;
687 }
688
689 try {
690 if (m.group(4) != null && !isPastCutoverDate(m.group(4))) {
691 info("currency.properties entry for " + ctry +
692 " ignored since cutover date has not passed :" + curdata, null);
693 return;
694 }
695 } catch (IndexOutOfBoundsException | NullPointerException | ParseException ex) {
696 info("currency.properties entry for " + ctry +
697 " ignored since exception encountered :" + ex.getMessage(), null);
698 return;
699 }
700
701 String code = m.group(1);
702 int numeric = Integer.parseInt(m.group(2));
703 int fraction = Integer.parseInt(m.group(3));
704 int entry = numeric << NUMERIC_CODE_SHIFT;
705
706 int index;
707 for (index = 0; index < scOldCurrencies.length; index++) {
708 if (scOldCurrencies[index].equals(code)) {
709 break;
710 }
711 }
712
713 if (index == scOldCurrencies.length) {
714 // simple case
715 entry |= (fraction << SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT) |
716 (code.charAt(2) - 'A');
717 } else {
718 // special case
719 entry |= SPECIAL_CASE_COUNTRY_MASK |
720 (index + SPECIAL_CASE_COUNTRY_INDEX_DELTA);
721 }
722 setMainTableEntry(ctry.charAt(0), ctry.charAt(1), entry);
723 }
724
725 private static boolean isPastCutoverDate(String s)
726 throws IndexOutOfBoundsException, NullPointerException, ParseException {
727 SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss", Locale.US);
728 format.setTimeZone(TimeZone.getTimeZone("GMT"));
729 format.setLenient(false);
730 long time = format.parse(s.trim()).getTime();
731 if (System.currentTimeMillis() - time >= 0L)
732 return true;
733
734 return false;
735 }
736
737 private static int countOccurrences(String value, char match) {
738 int count = 0;
739 for (char c : value.toCharArray()) {
740 if (c == match) {
741 ++count;
742 }
743 }
744 return count;
745 }
746
747 private static void info(String message, Throwable t) {
748 PlatformLogger logger = PlatformLogger.getLogger("java.util.Currency");
749 if (logger.isLoggable(PlatformLogger.INFO)) {
750 if (t != null) {
751 logger.info(message, t);
752 } else {
753 logger.info(message);
754 }
755 }
756 }
757 }