1 /*
2 * Copyright (c) 2000, 2013, 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/home/standards/currency_codes.htm">
51 * ISO web site</a> for more information.
52 * <p>
53 * The class is designed so that there's never more than one
54 * <code>Currency</code> instance for any given currency. Therefore, there's
55 * no public constructor. You obtain a <code>Currency</code> instance using
56 * the <code>getInstance</code> methods.
57 * <p>
58 * Users can supersede the Java runtime currency data by means of the system
59 * property {@code java.util.currency.data}. If this system property is
60 * defined then its value is the location of a properties file, the contents of
61 * which are key/value pairs of the ISO 3166 country codes and the ISO 4217
62 * currency data respectively. The value part consists of three ISO 4217 values
63 * of a currency, i.e., an alphabetic code, a numeric code, and a minor unit.
64 * 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 String propsFile = System.getProperty("java.util.currency.data");
250 if (propsFile == null) {
251 propsFile = homeDir + File.separator + "lib" +
252 File.separator + "currency.properties";
253 }
254 try {
255 File propFile = new File(propsFile);
256 if (propFile.exists()) {
257 Properties props = new Properties();
258 try (FileReader fr = new FileReader(propFile)) {
259 props.load(fr);
260 }
261 Set<String> keys = props.stringPropertyNames();
262 Pattern propertiesPattern =
263 Pattern.compile("([A-Z]{3})\\s*,\\s*(\\d{3})\\s*,\\s*" +
264 "([0-3])\\s*,?\\s*(\\d{4}-\\d{2}-\\d{2}T\\d{2}:" +
265 "\\d{2}:\\d{2})?");
266 for (String key : keys) {
267 replaceCurrencyData(propertiesPattern,
268 key.toUpperCase(Locale.ROOT),
269 props.getProperty(key).toUpperCase(Locale.ROOT));
270 }
271 }
272 } catch (IOException e) {
273 info("currency.properties is ignored because of an IOException", e);
274 }
275 return null;
276 }
277 });
278 }
279
280 /**
281 * Constants for retrieving localized names from the name providers.
282 */
283 private static final int SYMBOL = 0;
284 private static final int DISPLAYNAME = 1;
285
286
287 /**
288 * Constructs a <code>Currency</code> instance. The constructor is private
289 * so that we can insure that there's never more than one instance for a
290 * given currency.
291 */
292 private Currency(String currencyCode, int defaultFractionDigits, int numericCode) {
293 this.currencyCode = currencyCode;
294 this.defaultFractionDigits = defaultFractionDigits;
295 this.numericCode = numericCode;
296 }
297
298 /**
299 * Returns the <code>Currency</code> instance for the given currency code.
300 *
301 * @param currencyCode the ISO 4217 code of the currency
302 * @return the <code>Currency</code> instance for the given currency code
303 * @exception NullPointerException if <code>currencyCode</code> is null
304 * @exception IllegalArgumentException if <code>currencyCode</code> is not
305 * a supported ISO 4217 code.
306 */
307 public static Currency getInstance(String currencyCode) {
308 return getInstance(currencyCode, Integer.MIN_VALUE, 0);
309 }
310
311 private static Currency getInstance(String currencyCode, int defaultFractionDigits,
312 int numericCode) {
313 // Try to look up the currency code in the instances table.
314 // This does the null pointer check as a side effect.
315 // Also, if there already is an entry, the currencyCode must be valid.
316 Currency instance = instances.get(currencyCode);
317 if (instance != null) {
318 return instance;
319 }
320
321 if (defaultFractionDigits == Integer.MIN_VALUE) {
322 // Currency code not internally generated, need to verify first
323 // A currency code must have 3 characters and exist in the main table
324 // or in the list of other currencies.
325 if (currencyCode.length() != 3) {
326 throw new IllegalArgumentException();
327 }
328 char char1 = currencyCode.charAt(0);
329 char char2 = currencyCode.charAt(1);
330 int tableEntry = getMainTableEntry(char1, char2);
331 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
332 && tableEntry != INVALID_COUNTRY_ENTRY
333 && currencyCode.charAt(2) - 'A' == (tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK)) {
334 defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
335 numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
336 } else {
337 // Check for '-' separately so we don't get false hits in the table.
338 if (currencyCode.charAt(2) == '-') {
339 throw new IllegalArgumentException();
340 }
341 int index = otherCurrencies.indexOf(currencyCode);
342 if (index == -1) {
343 throw new IllegalArgumentException();
344 }
345 defaultFractionDigits = otherCurrenciesDFD[index / 4];
346 numericCode = otherCurrenciesNumericCode[index / 4];
347 }
348 }
349
350 Currency currencyVal =
351 new Currency(currencyCode, defaultFractionDigits, numericCode);
352 instance = instances.putIfAbsent(currencyCode, currencyVal);
353 return (instance != null ? instance : currencyVal);
354 }
355
356 /**
357 * Returns the <code>Currency</code> instance for the country of the
358 * given locale. The language and variant components of the locale
359 * are ignored. The result may vary over time, as countries change their
360 * currencies. For example, for the original member countries of the
361 * European Monetary Union, the method returns the old national currencies
362 * until December 31, 2001, and the Euro from January 1, 2002, local time
363 * of the respective countries.
364 * <p>
365 * The method returns <code>null</code> for territories that don't
366 * have a currency, such as Antarctica.
367 *
368 * @param locale the locale for whose country a <code>Currency</code>
369 * instance is needed
370 * @return the <code>Currency</code> instance for the country of the given
371 * locale, or {@code null}
372 * @exception NullPointerException if <code>locale</code> or its country
373 * code is {@code null}
374 * @exception IllegalArgumentException if the country of the given {@code locale}
375 * is not a supported ISO 3166 country code.
376 */
377 public static Currency getInstance(Locale locale) {
378 String country = locale.getCountry();
379 if (country == null) {
380 throw new NullPointerException();
381 }
382
383 if (country.length() != 2) {
384 throw new IllegalArgumentException();
385 }
386
387 char char1 = country.charAt(0);
388 char char2 = country.charAt(1);
389 int tableEntry = getMainTableEntry(char1, char2);
390 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
391 && tableEntry != INVALID_COUNTRY_ENTRY) {
392 char finalChar = (char) ((tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK) + 'A');
393 int defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
394 int numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
395 StringBuilder sb = new StringBuilder(country);
396 sb.append(finalChar);
397 return getInstance(sb.toString(), defaultFractionDigits, numericCode);
398 } else {
399 // special cases
400 if (tableEntry == INVALID_COUNTRY_ENTRY) {
401 throw new IllegalArgumentException();
402 }
403 if (tableEntry == COUNTRY_WITHOUT_CURRENCY_ENTRY) {
404 return null;
405 } else {
406 int index = (tableEntry & SPECIAL_CASE_COUNTRY_INDEX_MASK) - SPECIAL_CASE_COUNTRY_INDEX_DELTA;
407 if (scCutOverTimes[index] == Long.MAX_VALUE || System.currentTimeMillis() < scCutOverTimes[index]) {
408 return getInstance(scOldCurrencies[index], scOldCurrenciesDFD[index],
409 scOldCurrenciesNumericCode[index]);
410 } else {
411 return getInstance(scNewCurrencies[index], scNewCurrenciesDFD[index],
412 scNewCurrenciesNumericCode[index]);
413 }
414 }
415 }
416 }
417
418 /**
419 * Gets the set of available currencies. The returned set of currencies
420 * contains all of the available currencies, which may include currencies
421 * that represent obsolete ISO 4217 codes. The set can be modified
422 * without affecting the available currencies in the runtime.
423 *
424 * @return the set of available currencies. If there is no currency
425 * available in the runtime, the returned set is empty.
426 * @since 1.7
427 */
428 public static Set<Currency> getAvailableCurrencies() {
429 synchronized(Currency.class) {
430 if (available == null) {
431 available = new HashSet<>(256);
432
433 // Add simple currencies first
434 for (char c1 = 'A'; c1 <= 'Z'; c1 ++) {
435 for (char c2 = 'A'; c2 <= 'Z'; c2 ++) {
436 int tableEntry = getMainTableEntry(c1, c2);
437 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
438 && tableEntry != INVALID_COUNTRY_ENTRY) {
439 char finalChar = (char) ((tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK) + 'A');
440 int defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
441 int numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
442 StringBuilder sb = new StringBuilder();
443 sb.append(c1);
444 sb.append(c2);
445 sb.append(finalChar);
446 available.add(getInstance(sb.toString(), defaultFractionDigits, numericCode));
447 }
448 }
449 }
450
451 // Now add other currencies
452 StringTokenizer st = new StringTokenizer(otherCurrencies, "-");
453 while (st.hasMoreElements()) {
454 available.add(getInstance((String)st.nextElement()));
455 }
456 }
457 }
458
459 @SuppressWarnings("unchecked")
460 Set<Currency> result = (Set<Currency>) available.clone();
461 return result;
462 }
463
464 /**
465 * Gets the ISO 4217 currency code of this currency.
466 *
467 * @return the ISO 4217 currency code of this currency.
468 */
469 public String getCurrencyCode() {
470 return currencyCode;
471 }
472
473 /**
474 * Gets the symbol of this currency for the default
475 * {@link Locale.Category#DISPLAY DISPLAY} locale.
476 * For example, for the US Dollar, the symbol is "$" if the default
477 * locale is the US, while for other locales it may be "US$". If no
478 * symbol can be determined, the ISO 4217 currency code is returned.
479 * <p>
480 * This is equivalent to calling
481 * {@link #getSymbol(Locale)
482 * getSymbol(Locale.getDefault(Locale.Category.DISPLAY))}.
483 *
484 * @return the symbol of this currency for the default
485 * {@link Locale.Category#DISPLAY DISPLAY} locale
486 */
487 public String getSymbol() {
488 return getSymbol(Locale.getDefault(Locale.Category.DISPLAY));
489 }
490
491 /**
492 * Gets the symbol of this currency for the specified locale.
493 * For example, for the US Dollar, the symbol is "$" if the specified
494 * locale is the US, while for other locales it may be "US$". If no
495 * symbol can be determined, the ISO 4217 currency code is returned.
496 *
497 * @param locale the locale for which a display name for this currency is
498 * needed
499 * @return the symbol of this currency for the specified locale
500 * @exception NullPointerException if <code>locale</code> is null
501 */
502 public String getSymbol(Locale locale) {
503 LocaleServiceProviderPool pool =
504 LocaleServiceProviderPool.getPool(CurrencyNameProvider.class);
505 String symbol = pool.getLocalizedObject(
506 CurrencyNameGetter.INSTANCE,
507 locale, currencyCode, SYMBOL);
508 if (symbol != null) {
509 return symbol;
510 }
511
512 // use currency code as symbol of last resort
513 return currencyCode;
514 }
515
516 /**
517 * Gets the default number of fraction digits used with this currency.
518 * For example, the default number of fraction digits for the Euro is 2,
519 * while for the Japanese Yen it's 0.
520 * In the case of pseudo-currencies, such as IMF Special Drawing Rights,
521 * -1 is returned.
522 *
523 * @return the default number of fraction digits used with this currency
524 */
525 public int getDefaultFractionDigits() {
526 return defaultFractionDigits;
527 }
528
529 /**
530 * Returns the ISO 4217 numeric code of this currency.
531 *
532 * @return the ISO 4217 numeric code of this currency
533 * @since 1.7
534 */
535 public int getNumericCode() {
536 return numericCode;
537 }
538
539 /**
540 * Gets the name that is suitable for displaying this currency for
541 * the default {@link Locale.Category#DISPLAY DISPLAY} locale.
542 * If there is no suitable display name found
543 * for the default locale, the ISO 4217 currency code is returned.
544 * <p>
545 * This is equivalent to calling
546 * {@link #getDisplayName(Locale)
547 * getDisplayName(Locale.getDefault(Locale.Category.DISPLAY))}.
548 *
549 * @return the display name of this currency for the default
550 * {@link Locale.Category#DISPLAY DISPLAY} locale
551 * @since 1.7
552 */
553 public String getDisplayName() {
554 return getDisplayName(Locale.getDefault(Locale.Category.DISPLAY));
555 }
556
557 /**
558 * Gets the name that is suitable for displaying this currency for
559 * the specified locale. If there is no suitable display name found
560 * for the specified locale, the ISO 4217 currency code is returned.
561 *
562 * @param locale the locale for which a display name for this currency is
563 * needed
564 * @return the display name of this currency for the specified locale
565 * @exception NullPointerException if <code>locale</code> is null
566 * @since 1.7
567 */
568 public String getDisplayName(Locale locale) {
569 LocaleServiceProviderPool pool =
570 LocaleServiceProviderPool.getPool(CurrencyNameProvider.class);
571 String result = pool.getLocalizedObject(
572 CurrencyNameGetter.INSTANCE,
573 locale, currencyCode, DISPLAYNAME);
574 if (result != null) {
575 return result;
576 }
577
578 // use currency code as symbol of last resort
579 return currencyCode;
580 }
581
582 /**
583 * Returns the ISO 4217 currency code of this currency.
584 *
585 * @return the ISO 4217 currency code of this currency
586 */
587 @Override
588 public String toString() {
589 return currencyCode;
590 }
591
592 /**
593 * Resolves instances being deserialized to a single instance per currency.
594 */
595 private Object readResolve() {
596 return getInstance(currencyCode);
597 }
598
599 /**
600 * Gets the main table entry for the country whose country code consists
601 * of char1 and char2.
602 */
603 private static int getMainTableEntry(char char1, char char2) {
604 if (char1 < 'A' || char1 > 'Z' || char2 < 'A' || char2 > 'Z') {
605 throw new IllegalArgumentException();
606 }
607 return mainTable[(char1 - 'A') * A_TO_Z + (char2 - 'A')];
608 }
609
610 /**
611 * Sets the main table entry for the country whose country code consists
612 * of char1 and char2.
613 */
614 private static void setMainTableEntry(char char1, char char2, int entry) {
615 if (char1 < 'A' || char1 > 'Z' || char2 < 'A' || char2 > 'Z') {
616 throw new IllegalArgumentException();
617 }
618 mainTable[(char1 - 'A') * A_TO_Z + (char2 - 'A')] = entry;
619 }
620
621 /**
622 * Obtains a localized currency names from a CurrencyNameProvider
623 * implementation.
624 */
625 private static class CurrencyNameGetter
626 implements LocaleServiceProviderPool.LocalizedObjectGetter<CurrencyNameProvider,
627 String> {
628 private static final CurrencyNameGetter INSTANCE = new CurrencyNameGetter();
629
630 @Override
631 public String getObject(CurrencyNameProvider currencyNameProvider,
632 Locale locale,
633 String key,
634 Object... params) {
635 assert params.length == 1;
636 int type = (Integer)params[0];
637
638 switch(type) {
639 case SYMBOL:
640 return currencyNameProvider.getSymbol(key, locale);
641 case DISPLAYNAME:
642 return currencyNameProvider.getDisplayName(key, locale);
643 default:
644 assert false; // shouldn't happen
645 }
646
647 return null;
648 }
649 }
650
651 private static int[] readIntArray(DataInputStream dis, int count) throws IOException {
652 int[] ret = new int[count];
653 for (int i = 0; i < count; i++) {
654 ret[i] = dis.readInt();
655 }
656
657 return ret;
658 }
659
660 private static long[] readLongArray(DataInputStream dis, int count) throws IOException {
661 long[] ret = new long[count];
662 for (int i = 0; i < count; i++) {
663 ret[i] = dis.readLong();
664 }
665
666 return ret;
667 }
668
669 private static String[] readStringArray(DataInputStream dis, int count) throws IOException {
670 String[] ret = new String[count];
671 for (int i = 0; i < count; i++) {
672 ret[i] = dis.readUTF();
673 }
674
675 return ret;
676 }
677
678 /**
679 * Replaces currency data found in the currencydata.properties file
680 *
681 * @param pattern regex pattern for the properties
682 * @param ctry country code
683 * @param curdata currency data. This is a comma separated string that
684 * consists of "three-letter alphabet code", "three-digit numeric code",
685 * and "one-digit (0,1,2, or 3) default fraction digit".
686 * For example, "JPZ,392,0".
687 * An optional UTC date can be appended to the string (comma separated)
688 * to allow a currency change take effect after date specified.
689 * For example, "JP=JPZ,999,0,2014-01-01T00:00:00" has no effect unless
690 * UTC time is past 1st January 2014 00:00:00 GMT.
691 */
692 private static void replaceCurrencyData(Pattern pattern, String ctry, String curdata) {
693
694 if (ctry.length() != 2) {
695 // ignore invalid country code
696 info("currency.properties entry for " + ctry +
697 " is ignored because of the invalid country code.", null);
698 return;
699 }
700
701 Matcher m = pattern.matcher(curdata);
702 if (!m.find() || (m.group(4) == null && countOccurrences(curdata, ',') >= 3)) {
703 // format is not recognized. ignore the data
704 // if group(4) date string is null and we've 4 values, bad date value
705 info("currency.properties entry for " + ctry +
706 " ignored because the value format is not recognized.", null);
707 return;
708 }
709
710 try {
711 if (m.group(4) != null && !isPastCutoverDate(m.group(4))) {
712 info("currency.properties entry for " + ctry +
713 " ignored since cutover date has not passed :" + curdata, null);
714 return;
715 }
716 } catch (ParseException ex) {
717 info("currency.properties entry for " + ctry +
718 " ignored since exception encountered :" + ex.getMessage(), null);
719 return;
720 }
721
722 String code = m.group(1);
723 int numeric = Integer.parseInt(m.group(2));
724 int fraction = Integer.parseInt(m.group(3));
725 int entry = numeric << NUMERIC_CODE_SHIFT;
726
727 int index;
728 for (index = 0; index < scOldCurrencies.length; index++) {
729 if (scOldCurrencies[index].equals(code)) {
730 break;
731 }
732 }
733
734 if (index == scOldCurrencies.length) {
735 // simple case
736 entry |= (fraction << SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT) |
737 (code.charAt(2) - 'A');
738 } else {
739 // special case
740 entry |= SPECIAL_CASE_COUNTRY_MASK |
741 (index + SPECIAL_CASE_COUNTRY_INDEX_DELTA);
742 }
743 setMainTableEntry(ctry.charAt(0), ctry.charAt(1), entry);
744 }
745
746 private static boolean isPastCutoverDate(String s) throws ParseException {
747 SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss", Locale.ROOT);
748 format.setTimeZone(TimeZone.getTimeZone("UTC"));
749 format.setLenient(false);
750 long time = format.parse(s.trim()).getTime();
751 return System.currentTimeMillis() > time;
752
753 }
754
755 private static int countOccurrences(String value, char match) {
756 int count = 0;
757 for (char c : value.toCharArray()) {
758 if (c == match) {
759 ++count;
760 }
761 }
762 return count;
763 }
764
765 private static void info(String message, Throwable t) {
766 PlatformLogger logger = PlatformLogger.getLogger("java.util.Currency");
767 if (logger.isLoggable(PlatformLogger.Level.INFO)) {
768 if (t != null) {
769 logger.info(message, t);
770 } else {
771 logger.info(message);
772 }
773 }
774 }
775 }
--- EOF ---