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 * timestamp may be specified per currency entry if users need to specify a
67 * cutover date indicating when the new data comes into effect. The timestamp 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 the timestamp must be of ISO 8601 format :
72 * {@code 'yyyy-MM-dd'T'HH:mm:ss'}. For example,
73 * <p>
74 * <code>
75 * #Sample currency properties<br>
76 * JP=JPZ,999,0
77 * </code>
78 * <p>
79 * will supersede the currency data for Japan.
80 *
81 * <p>
82 * <code>
83 * #Sample currency properties with cutover date<br>
84 * JP=JPZ,999,0,2014-01-01T00:00:00
85 * </code>
86 * <p>
87 * will supersede the currency data for Japan if {@code Currency} class is loaded after
88 * 1st January 2014 00:00:00 GMT.
89 * <p>
90 * Where syntactically malformed entries are encountered, the entry is ignored
91 * and the remainder of entries in file are processed. For instances where duplicate
92 * country code entries exist, the behavior of the Currency information for that
93 * {@code Currency} is undefined and the remainder of entries in file are processed.
94 *
95 * @since 1.4
96 */
97 public final class Currency implements Serializable {
98
99 private static final long serialVersionUID = -158308464356906721L;
100
101 /**
102 * ISO 4217 currency code for this currency.
103 *
104 * @serial
105 */
106 private final String currencyCode;
107
108 /**
109 * Default fraction digits for this currency.
110 * Set from currency data tables.
111 */
112 transient private final int defaultFractionDigits;
113
114 /**
115 * ISO 4217 numeric code for this currency.
116 * Set from currency data tables.
117 */
118 transient private final int numericCode;
119
120
121 // class data: instance map
122
123 private static ConcurrentMap<String, Currency> instances = new ConcurrentHashMap<>(7);
124 private static HashSet<Currency> available;
125
126 // Class data: currency data obtained from currency.data file.
127 // Purpose:
128 // - determine valid country codes
129 // - determine valid currency codes
130 // - map country codes to currency codes
131 // - obtain default fraction digits for currency codes
132 //
133 // sc = special case; dfd = default fraction digits
134 // Simple countries are those where the country code is a prefix of the
135 // currency code, and there are no known plans to change the currency.
136 //
137 // table formats:
138 // - mainTable:
139 // - maps country code to 32-bit int
140 // - 26*26 entries, corresponding to [A-Z]*[A-Z]
141 // - \u007F -> not valid country
142 // - bits 18-31: unused
143 // - bits 8-17: numeric code (0 to 1023)
144 // - bit 7: 1 - special case, bits 0-4 indicate which one
145 // 0 - simple country, bits 0-4 indicate final char of currency code
146 // - bits 5-6: fraction digits for simple countries, 0 for special cases
147 // - bits 0-4: final char for currency code for simple country, or ID of special case
148 // - special case IDs:
149 // - 0: country has no currency
150 // - other: index into sc* arrays + 1
151 // - scCutOverTimes: cut-over time in millis as returned by
152 // System.currentTimeMillis for special case countries that are changing
153 // currencies; Long.MAX_VALUE for countries that are not changing currencies
154 // - scOldCurrencies: old currencies for special case countries
155 // - scNewCurrencies: new currencies for special case countries that are
156 // changing currencies; null for others
157 // - scOldCurrenciesDFD: default fraction digits for old currencies
158 // - scNewCurrenciesDFD: default fraction digits for new currencies, 0 for
159 // countries that are not changing currencies
160 // - otherCurrencies: concatenation of all currency codes that are not the
161 // main currency of a simple country, separated by "-"
162 // - otherCurrenciesDFD: decimal format digits for currencies in otherCurrencies, same order
163
164 static int formatVersion;
165 static int dataVersion;
166 static int[] mainTable;
167 static long[] scCutOverTimes;
168 static String[] scOldCurrencies;
169 static String[] scNewCurrencies;
170 static int[] scOldCurrenciesDFD;
171 static int[] scNewCurrenciesDFD;
172 static int[] scOldCurrenciesNumericCode;
173 static int[] scNewCurrenciesNumericCode;
174 static String otherCurrencies;
175 static int[] otherCurrenciesDFD;
176 static int[] otherCurrenciesNumericCode;
177
178 // handy constants - must match definitions in GenerateCurrencyData
179 // magic number
180 private static final int MAGIC_NUMBER = 0x43757244;
181 // number of characters from A to Z
182 private static final int A_TO_Z = ('Z' - 'A') + 1;
183 // entry for invalid country codes
184 private static final int INVALID_COUNTRY_ENTRY = 0x007F;
185 // entry for countries without currency
186 private static final int COUNTRY_WITHOUT_CURRENCY_ENTRY = 0x0080;
187 // mask for simple case country entries
188 private static final int SIMPLE_CASE_COUNTRY_MASK = 0x0000;
189 // mask for simple case country entry final character
190 private static final int SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK = 0x001F;
191 // mask for simple case country entry default currency digits
192 private static final int SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK = 0x0060;
193 // shift count for simple case country entry default currency digits
194 private static final int SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT = 5;
195 // mask for special case country entries
196 private static final int SPECIAL_CASE_COUNTRY_MASK = 0x0080;
197 // mask for special case country index
198 private static final int SPECIAL_CASE_COUNTRY_INDEX_MASK = 0x001F;
199 // delta from entry index component in main table to index into special case tables
200 private static final int SPECIAL_CASE_COUNTRY_INDEX_DELTA = 1;
201 // mask for distinguishing simple and special case countries
202 private static final int COUNTRY_TYPE_MASK = SIMPLE_CASE_COUNTRY_MASK | SPECIAL_CASE_COUNTRY_MASK;
203 // mask for the numeric code of the currency
204 private static final int NUMERIC_CODE_MASK = 0x0003FF00;
205 // shift count for the numeric code of the currency
206 private static final int NUMERIC_CODE_SHIFT = 8;
207
208 // Currency data format version
209 private static final int VALID_FORMAT_VERSION = 1;
210
211 static {
212 AccessController.doPrivileged(new PrivilegedAction<Void>() {
213 @Override
214 public Void run() {
215 String homeDir = System.getProperty("java.home");
216 try {
217 String dataFile = homeDir + File.separator +
218 "lib" + File.separator + "currency.data";
219 try (DataInputStream dis = new DataInputStream(
220 new BufferedInputStream(
221 new FileInputStream(dataFile)))) {
222 if (dis.readInt() != MAGIC_NUMBER) {
223 throw new InternalError("Currency data is possibly corrupted");
224 }
225 formatVersion = dis.readInt();
226 if (formatVersion != VALID_FORMAT_VERSION) {
227 throw new InternalError("Currency data format is incorrect");
228 }
229 dataVersion = dis.readInt();
230 mainTable = readIntArray(dis, A_TO_Z * A_TO_Z);
231 int scCount = dis.readInt();
232 scCutOverTimes = readLongArray(dis, scCount);
233 scOldCurrencies = readStringArray(dis, scCount);
234 scNewCurrencies = readStringArray(dis, scCount);
235 scOldCurrenciesDFD = readIntArray(dis, scCount);
236 scNewCurrenciesDFD = readIntArray(dis, scCount);
237 scOldCurrenciesNumericCode = readIntArray(dis, scCount);
238 scNewCurrenciesNumericCode = readIntArray(dis, scCount);
239 int ocCount = dis.readInt();
240 otherCurrencies = dis.readUTF();
241 otherCurrenciesDFD = readIntArray(dis, ocCount);
242 otherCurrenciesNumericCode = readIntArray(dis, ocCount);
243 }
244 } catch (IOException e) {
245 throw new InternalError(e);
246 }
247
248 // look for the properties file for overrides
249 try {
250 File propFile = new File(homeDir + File.separator +
251 "lib" + File.separator +
252 "currency.properties");
253 if (propFile.exists()) {
254 Properties props = new Properties();
255 try (FileReader fr = new FileReader(propFile)) {
256 props.load(fr);
257 }
258 Set<String> keys = props.stringPropertyNames();
259 Pattern propertiesPattern =
260 Pattern.compile("([A-Z]{3})\\s*,\\s*(\\d{3})\\s*,\\s*" +
261 "([0-3])\\s*,?\\s*(\\d{4}-\\d{2}-\\d{2}T\\d{2}:" +
262 "\\d{2}:\\d{2})?");
263 for (String key : keys) {
264 replaceCurrencyData(propertiesPattern,
265 key.toUpperCase(Locale.ROOT),
266 props.getProperty(key).toUpperCase(Locale.ROOT));
267 }
268 }
269 } catch (IOException e) {
270 info("currency.properties is ignored because of an IOException", e);
271 }
272 return null;
273 }
274 });
275 }
276
277 /**
278 * Constants for retrieving localized names from the name providers.
279 */
280 private static final int SYMBOL = 0;
281 private static final int DISPLAYNAME = 1;
282
283
284 /**
285 * Constructs a <code>Currency</code> instance. The constructor is private
286 * so that we can insure that there's never more than one instance for a
287 * given currency.
288 */
289 private Currency(String currencyCode, int defaultFractionDigits, int numericCode) {
290 this.currencyCode = currencyCode;
291 this.defaultFractionDigits = defaultFractionDigits;
292 this.numericCode = numericCode;
293 }
294
295 /**
296 * Returns the <code>Currency</code> instance for the given currency code.
297 *
298 * @param currencyCode the ISO 4217 code of the currency
299 * @return the <code>Currency</code> instance for the given currency code
300 * @exception NullPointerException if <code>currencyCode</code> is null
301 * @exception IllegalArgumentException if <code>currencyCode</code> is not
302 * a supported ISO 4217 code.
303 */
304 public static Currency getInstance(String currencyCode) {
305 return getInstance(currencyCode, Integer.MIN_VALUE, 0);
306 }
307
308 private static Currency getInstance(String currencyCode, int defaultFractionDigits,
309 int numericCode) {
310 // Try to look up the currency code in the instances table.
311 // This does the null pointer check as a side effect.
312 // Also, if there already is an entry, the currencyCode must be valid.
313 Currency instance = instances.get(currencyCode);
314 if (instance != null) {
315 return instance;
316 }
317
318 if (defaultFractionDigits == Integer.MIN_VALUE) {
319 // Currency code not internally generated, need to verify first
320 // A currency code must have 3 characters and exist in the main table
321 // or in the list of other currencies.
322 if (currencyCode.length() != 3) {
323 throw new IllegalArgumentException();
324 }
325 char char1 = currencyCode.charAt(0);
326 char char2 = currencyCode.charAt(1);
327 int tableEntry = getMainTableEntry(char1, char2);
328 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
329 && tableEntry != INVALID_COUNTRY_ENTRY
330 && currencyCode.charAt(2) - 'A' == (tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK)) {
331 defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
332 numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
333 } else {
334 // Check for '-' separately so we don't get false hits in the table.
335 if (currencyCode.charAt(2) == '-') {
336 throw new IllegalArgumentException();
337 }
338 int index = otherCurrencies.indexOf(currencyCode);
339 if (index == -1) {
340 throw new IllegalArgumentException();
341 }
342 defaultFractionDigits = otherCurrenciesDFD[index / 4];
343 numericCode = otherCurrenciesNumericCode[index / 4];
344 }
345 }
346
347 Currency currencyVal =
348 new Currency(currencyCode, defaultFractionDigits, numericCode);
349 instance = instances.putIfAbsent(currencyCode, currencyVal);
350 return (instance != null ? instance : currencyVal);
351 }
352
353 /**
354 * Returns the <code>Currency</code> instance for the country of the
355 * given locale. The language and variant components of the locale
356 * are ignored. The result may vary over time, as countries change their
357 * currencies. For example, for the original member countries of the
358 * European Monetary Union, the method returns the old national currencies
359 * until December 31, 2001, and the Euro from January 1, 2002, local time
360 * of the respective countries.
361 * <p>
362 * The method returns <code>null</code> for territories that don't
363 * have a currency, such as Antarctica.
364 *
365 * @param locale the locale for whose country a <code>Currency</code>
366 * instance is needed
367 * @return the <code>Currency</code> instance for the country of the given
368 * locale, or {@code null}
369 * @exception NullPointerException if <code>locale</code> or its country
370 * code is {@code null}
371 * @exception IllegalArgumentException if the country of the given {@code locale}
372 * is not a supported ISO 3166 country code.
373 */
374 public static Currency getInstance(Locale locale) {
375 String country = locale.getCountry();
376 if (country == null) {
377 throw new NullPointerException();
378 }
379
380 if (country.length() != 2) {
381 throw new IllegalArgumentException();
382 }
383
384 char char1 = country.charAt(0);
385 char char2 = country.charAt(1);
386 int tableEntry = getMainTableEntry(char1, char2);
387 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
388 && tableEntry != INVALID_COUNTRY_ENTRY) {
389 char finalChar = (char) ((tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK) + 'A');
390 int defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
391 int numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
392 StringBuilder sb = new StringBuilder(country);
393 sb.append(finalChar);
394 return getInstance(sb.toString(), defaultFractionDigits, numericCode);
395 } else {
396 // special cases
397 if (tableEntry == INVALID_COUNTRY_ENTRY) {
398 throw new IllegalArgumentException();
399 }
400 if (tableEntry == COUNTRY_WITHOUT_CURRENCY_ENTRY) {
401 return null;
402 } else {
403 int index = (tableEntry & SPECIAL_CASE_COUNTRY_INDEX_MASK) - SPECIAL_CASE_COUNTRY_INDEX_DELTA;
404 if (scCutOverTimes[index] == Long.MAX_VALUE || System.currentTimeMillis() < scCutOverTimes[index]) {
405 return getInstance(scOldCurrencies[index], scOldCurrenciesDFD[index],
406 scOldCurrenciesNumericCode[index]);
407 } else {
408 return getInstance(scNewCurrencies[index], scNewCurrenciesDFD[index],
409 scNewCurrenciesNumericCode[index]);
410 }
411 }
412 }
413 }
414
415 /**
416 * Gets the set of available currencies. The returned set of currencies
417 * contains all of the available currencies, which may include currencies
418 * that represent obsolete ISO 4217 codes. The set can be modified
419 * without affecting the available currencies in the runtime.
420 *
421 * @return the set of available currencies. If there is no currency
422 * available in the runtime, the returned set is empty.
423 * @since 1.7
424 */
425 public static Set<Currency> getAvailableCurrencies() {
426 synchronized(Currency.class) {
427 if (available == null) {
428 available = new HashSet<>(256);
429
430 // Add simple currencies first
431 for (char c1 = 'A'; c1 <= 'Z'; c1 ++) {
432 for (char c2 = 'A'; c2 <= 'Z'; c2 ++) {
433 int tableEntry = getMainTableEntry(c1, c2);
434 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
435 && tableEntry != INVALID_COUNTRY_ENTRY) {
436 char finalChar = (char) ((tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK) + 'A');
437 int defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
438 int numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
439 StringBuilder sb = new StringBuilder();
440 sb.append(c1);
441 sb.append(c2);
442 sb.append(finalChar);
443 available.add(getInstance(sb.toString(), defaultFractionDigits, numericCode));
444 }
445 }
446 }
447
448 // Now add other currencies
449 StringTokenizer st = new StringTokenizer(otherCurrencies, "-");
450 while (st.hasMoreElements()) {
451 available.add(getInstance((String)st.nextElement()));
452 }
453 }
454 }
455
456 @SuppressWarnings("unchecked")
457 Set<Currency> result = (Set<Currency>) available.clone();
458 return result;
459 }
460
461 /**
462 * Gets the ISO 4217 currency code of this currency.
463 *
464 * @return the ISO 4217 currency code of this currency.
465 */
466 public String getCurrencyCode() {
467 return currencyCode;
468 }
469
470 /**
471 * Gets the symbol of this currency for the default locale.
472 * For example, for the US Dollar, the symbol is "$" if the default
473 * locale is the US, while for other locales it may be "US$". If no
474 * symbol can be determined, the ISO 4217 currency code is returned.
475 *
476 * @return the symbol of this currency for the default locale
477 */
478 public String getSymbol() {
479 return getSymbol(Locale.getDefault(Locale.Category.DISPLAY));
480 }
481
482 /**
483 * Gets the symbol of this currency for the specified locale.
484 * For example, for the US Dollar, the symbol is "$" if the specified
485 * locale is the US, while for other locales it may be "US$". If no
486 * symbol can be determined, the ISO 4217 currency code is returned.
487 *
488 * @param locale the locale for which a display name for this currency is
489 * needed
490 * @return the symbol of this currency for the specified locale
491 * @exception NullPointerException if <code>locale</code> is null
492 */
493 public String getSymbol(Locale locale) {
494 LocaleServiceProviderPool pool =
495 LocaleServiceProviderPool.getPool(CurrencyNameProvider.class);
496 String symbol = pool.getLocalizedObject(
497 CurrencyNameGetter.INSTANCE,
498 locale, currencyCode, SYMBOL);
499 if (symbol != null) {
500 return symbol;
501 }
502
503 // use currency code as symbol of last resort
504 return currencyCode;
505 }
506
507 /**
508 * Gets the default number of fraction digits used with this currency.
509 * For example, the default number of fraction digits for the Euro is 2,
510 * while for the Japanese Yen it's 0.
511 * In the case of pseudo-currencies, such as IMF Special Drawing Rights,
512 * -1 is returned.
513 *
514 * @return the default number of fraction digits used with this currency
515 */
516 public int getDefaultFractionDigits() {
517 return defaultFractionDigits;
518 }
519
520 /**
521 * Returns the ISO 4217 numeric code of this currency.
522 *
523 * @return the ISO 4217 numeric code of this currency
524 * @since 1.7
525 */
526 public int getNumericCode() {
527 return numericCode;
528 }
529
530 /**
531 * Gets the name that is suitable for displaying this currency for
532 * the default locale. If there is no suitable display name found
533 * for the default locale, the ISO 4217 currency code is returned.
534 *
535 * @return the display name of this currency for the default locale
536 * @since 1.7
537 */
538 public String getDisplayName() {
539 return getDisplayName(Locale.getDefault(Locale.Category.DISPLAY));
540 }
541
542 /**
543 * Gets the name that is suitable for displaying this currency for
544 * the specified locale. If there is no suitable display name found
545 * for the specified locale, the ISO 4217 currency code is returned.
546 *
547 * @param locale the locale for which a display name for this currency is
548 * needed
549 * @return the display name of this currency for the specified locale
550 * @exception NullPointerException if <code>locale</code> is null
551 * @since 1.7
552 */
553 public String getDisplayName(Locale locale) {
554 LocaleServiceProviderPool pool =
555 LocaleServiceProviderPool.getPool(CurrencyNameProvider.class);
556 String result = pool.getLocalizedObject(
557 CurrencyNameGetter.INSTANCE,
558 locale, currencyCode, DISPLAYNAME);
559 if (result != null) {
560 return result;
561 }
562
563 // use currency code as symbol of last resort
564 return currencyCode;
565 }
566
567 /**
568 * Returns the ISO 4217 currency code of this currency.
569 *
570 * @return the ISO 4217 currency code of this currency
571 */
572 @Override
573 public String toString() {
574 return currencyCode;
575 }
576
577 /**
578 * Resolves instances being deserialized to a single instance per currency.
579 */
580 private Object readResolve() {
581 return getInstance(currencyCode);
582 }
583
584 /**
585 * Gets the main table entry for the country whose country code consists
586 * of char1 and char2.
587 */
588 private static int getMainTableEntry(char char1, char char2) {
589 if (char1 < 'A' || char1 > 'Z' || char2 < 'A' || char2 > 'Z') {
590 throw new IllegalArgumentException();
591 }
592 return mainTable[(char1 - 'A') * A_TO_Z + (char2 - 'A')];
593 }
594
595 /**
596 * Sets the main table entry for the country whose country code consists
597 * of char1 and char2.
598 */
599 private static void setMainTableEntry(char char1, char char2, int entry) {
600 if (char1 < 'A' || char1 > 'Z' || char2 < 'A' || char2 > 'Z') {
601 throw new IllegalArgumentException();
602 }
603 mainTable[(char1 - 'A') * A_TO_Z + (char2 - 'A')] = entry;
604 }
605
606 /**
607 * Obtains a localized currency names from a CurrencyNameProvider
608 * implementation.
609 */
610 private static class CurrencyNameGetter
611 implements LocaleServiceProviderPool.LocalizedObjectGetter<CurrencyNameProvider,
612 String> {
613 private static final CurrencyNameGetter INSTANCE = new CurrencyNameGetter();
614
615 @Override
616 public String getObject(CurrencyNameProvider currencyNameProvider,
617 Locale locale,
618 String key,
619 Object... params) {
620 assert params.length == 1;
621 int type = (Integer)params[0];
622
623 switch(type) {
624 case SYMBOL:
625 return currencyNameProvider.getSymbol(key, locale);
626 case DISPLAYNAME:
627 return currencyNameProvider.getDisplayName(key, locale);
628 default:
629 assert false; // shouldn't happen
630 }
631
632 return null;
633 }
634 }
635
636 private static int[] readIntArray(DataInputStream dis, int count) throws IOException {
637 int[] ret = new int[count];
638 for (int i = 0; i < count; i++) {
639 ret[i] = dis.readInt();
640 }
641
642 return ret;
643 }
644
645 private static long[] readLongArray(DataInputStream dis, int count) throws IOException {
646 long[] ret = new long[count];
647 for (int i = 0; i < count; i++) {
648 ret[i] = dis.readLong();
649 }
650
651 return ret;
652 }
653
654 private static String[] readStringArray(DataInputStream dis, int count) throws IOException {
655 String[] ret = new String[count];
656 for (int i = 0; i < count; i++) {
657 ret[i] = dis.readUTF();
658 }
659
660 return ret;
661 }
662
663 /**
664 * Replaces currency data found in the currencydata.properties file
665 *
666 * @param pattern regex pattern for the properties
667 * @param ctry country code
668 * @param data currency data. This is a comma separated string that
669 * consists of "three-letter alphabet code", "three-digit numeric code",
670 * and "one-digit (0,1,2, or 3) default fraction digit".
671 * For example, "JPZ,392,0".
672 * An optional UTC date can be appended to the string (comma separated)
673 * to allow a currency change take effect after date specified.
674 * For example, "JP=JPZ,999,0,2014-01-01T00:00:00" has no effect unless
675 * UTC time is past 1st January 2014 00:00:00 GMT.
676 */
677 private static void replaceCurrencyData(Pattern pattern, String ctry, String curdata) {
678
679 if (ctry.length() != 2) {
680 // ignore invalid country code
681 info("currency.properties entry for " + ctry +
682 " is ignored because of the invalid country code.", null);
683 return;
684 }
685
686 Matcher m = pattern.matcher(curdata);
687 if (!m.find() || (m.group(4) == null && countOccurrences(curdata, ',') >= 3)) {
688 // format is not recognized. ignore the data
689 // if group(4) date string is null and we've 4 values, bad date value
690 info("currency.properties entry for " + ctry +
691 " ignored because the value format is not recognized.", null);
692 return;
693 }
694
695 try {
696 if (m.group(4) != null && !isPastCutoverDate(m.group(4))) {
697 info("currency.properties entry for " + ctry +
698 " ignored since cutover date has not passed :" + curdata, null);
699 return;
700 }
701 } catch (IndexOutOfBoundsException | NullPointerException | ParseException ex) {
702 info("currency.properties entry for " + ctry +
703 " ignored since exception encountered :" + ex.getMessage(), null);
704 return;
705 }
706
707 String code = m.group(1);
708 int numeric = Integer.parseInt(m.group(2));
709 int fraction = Integer.parseInt(m.group(3));
710 int entry = numeric << NUMERIC_CODE_SHIFT;
711
712 int index;
713 for (index = 0; index < scOldCurrencies.length; index++) {
714 if (scOldCurrencies[index].equals(code)) {
715 break;
716 }
717 }
718
719 if (index == scOldCurrencies.length) {
720 // simple case
721 entry |= (fraction << SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT) |
722 (code.charAt(2) - 'A');
723 } else {
724 // special case
725 entry |= SPECIAL_CASE_COUNTRY_MASK |
726 (index + SPECIAL_CASE_COUNTRY_INDEX_DELTA);
727 }
728 setMainTableEntry(ctry.charAt(0), ctry.charAt(1), entry);
729 }
730
731 private static boolean isPastCutoverDate(String s)
732 throws IndexOutOfBoundsException, NullPointerException, ParseException {
733 SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss", Locale.ROOT);
734 format.setTimeZone(TimeZone.getTimeZone("UTC"));
735 format.setLenient(false);
736 long time = format.parse(s.trim()).getTime();
737 return System.currentTimeMillis() > time;
738
739 }
740
741 private static int countOccurrences(String value, char match) {
742 int count = 0;
743 for (char c : value.toCharArray()) {
744 if (c == match) {
745 ++count;
746 }
747 }
748 return count;
749 }
750
751 private static void info(String message, Throwable t) {
752 PlatformLogger logger = PlatformLogger.getLogger("java.util.Currency");
753 if (logger.isLoggable(PlatformLogger.INFO)) {
754 if (t != null) {
755 logger.info(message, t);
756 } else {
757 logger.info(message);
758 }
759 }
760 }
761 }