1 /*
2 * Copyright (c) 2000, 2011, 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.util.concurrent.ConcurrentHashMap;
38 import java.util.concurrent.ConcurrentMap;
39 import java.util.logging.Level;
40 import java.util.regex.Pattern;
41 import java.util.regex.Matcher;
42 import java.util.spi.CurrencyNameProvider;
43 import java.util.spi.LocaleServiceProvider;
44 import sun.util.LocaleServiceProviderPool;
45 import sun.util.logging.PlatformLogger;
46 import sun.util.resources.LocaleData;
47 import sun.util.resources.OpenListResourceBundle;
48
49
50 /**
51 * Represents a currency. Currencies are identified by their ISO 4217 currency
52 * codes. Visit the <a href="http://www.iso.org/iso/en/prods-services/popstds/currencycodes.html">
53 * ISO web site</a> for more information, including a table of
54 * currency codes.
55 * <p>
56 * The class is designed so that there's never more than one
57 * <code>Currency</code> instance for any given currency. Therefore, there's
58 * no public constructor. You obtain a <code>Currency</code> instance using
59 * the <code>getInstance</code> methods.
60 * <p>
61 * Users can supersede the Java runtime currency data by creating a properties
62 * file named <code><JAVA_HOME>/lib/currency.properties</code>. The contents
63 * of the properties file are key/value pairs of the ISO 3166 country codes
64 * and the ISO 4217 currency data respectively. The value part consists of
65 * three ISO 4217 values of a currency, i.e., an alphabetic code, a numeric
66 * code, and a minor unit. Those three ISO 4217 values are separated by commas.
67 * The lines which start with '#'s are considered comment lines. For example,
68 * <p>
69 * <code>
70 * #Sample currency properties<br>
71 * JP=JPZ,999,0
72 * </code>
73 * <p>
74 * will supersede the currency data for Japan.
75 *
76 * @since 1.4
77 */
78 public final class Currency implements Serializable {
79
80 private static final long serialVersionUID = -158308464356906721L;
81
82 /**
83 * ISO 4217 currency code for this currency.
84 *
85 * @serial
86 */
87 private final String currencyCode;
88
89 /**
90 * Default fraction digits for this currency.
91 * Set from currency data tables.
92 */
93 transient private final int defaultFractionDigits;
94
95 /**
96 * ISO 4217 numeric code for this currency.
97 * Set from currency data tables.
98 */
99 transient private final int numericCode;
100
101
102 // class data: instance map
103
104 private static ConcurrentMap<String, Currency> instances = new ConcurrentHashMap<>(7);
105 private static HashSet<Currency> available;
106
107
108 // Class data: currency data obtained from currency.data file.
109 // Purpose:
110 // - determine valid country codes
111 // - determine valid currency codes
112 // - map country codes to currency codes
113 // - obtain default fraction digits for currency codes
114 //
115 // sc = special case; dfd = default fraction digits
116 // Simple countries are those where the country code is a prefix of the
117 // currency code, and there are no known plans to change the currency.
118 //
119 // table formats:
120 // - mainTable:
121 // - maps country code to 32-bit int
122 // - 26*26 entries, corresponding to [A-Z]*[A-Z]
123 // - \u007F -> not valid country
124 // - bits 18-31: unused
125 // - bits 8-17: numeric code (0 to 1023)
126 // - bit 7: 1 - special case, bits 0-4 indicate which one
127 // 0 - simple country, bits 0-4 indicate final char of currency code
128 // - bits 5-6: fraction digits for simple countries, 0 for special cases
129 // - bits 0-4: final char for currency code for simple country, or ID of special case
130 // - special case IDs:
131 // - 0: country has no currency
132 // - other: index into sc* arrays + 1
133 // - scCutOverTimes: cut-over time in millis as returned by
134 // System.currentTimeMillis for special case countries that are changing
135 // currencies; Long.MAX_VALUE for countries that are not changing currencies
136 // - scOldCurrencies: old currencies for special case countries
137 // - scNewCurrencies: new currencies for special case countries that are
138 // changing currencies; null for others
139 // - scOldCurrenciesDFD: default fraction digits for old currencies
140 // - scNewCurrenciesDFD: default fraction digits for new currencies, 0 for
141 // countries that are not changing currencies
142 // - otherCurrencies: concatenation of all currency codes that are not the
143 // main currency of a simple country, separated by "-"
144 // - otherCurrenciesDFD: decimal format digits for currencies in otherCurrencies, same order
145
146 static int formatVersion;
147 static int dataVersion;
148 static int[] mainTable;
149 static long[] scCutOverTimes;
150 static String[] scOldCurrencies;
151 static String[] scNewCurrencies;
152 static int[] scOldCurrenciesDFD;
153 static int[] scNewCurrenciesDFD;
154 static int[] scOldCurrenciesNumericCode;
155 static int[] scNewCurrenciesNumericCode;
156 static String otherCurrencies;
157 static int[] otherCurrenciesDFD;
158 static int[] otherCurrenciesNumericCode;
159
160 // handy constants - must match definitions in GenerateCurrencyData
161 // magic number
162 private static final int MAGIC_NUMBER = 0x43757244;
163 // number of characters from A to Z
164 private static final int A_TO_Z = ('Z' - 'A') + 1;
165 // entry for invalid country codes
166 private static final int INVALID_COUNTRY_ENTRY = 0x007F;
167 // entry for countries without currency
168 private static final int COUNTRY_WITHOUT_CURRENCY_ENTRY = 0x0080;
169 // mask for simple case country entries
170 private static final int SIMPLE_CASE_COUNTRY_MASK = 0x0000;
171 // mask for simple case country entry final character
172 private static final int SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK = 0x001F;
173 // mask for simple case country entry default currency digits
174 private static final int SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK = 0x0060;
175 // shift count for simple case country entry default currency digits
176 private static final int SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT = 5;
177 // mask for special case country entries
178 private static final int SPECIAL_CASE_COUNTRY_MASK = 0x0080;
179 // mask for special case country index
180 private static final int SPECIAL_CASE_COUNTRY_INDEX_MASK = 0x001F;
181 // delta from entry index component in main table to index into special case tables
182 private static final int SPECIAL_CASE_COUNTRY_INDEX_DELTA = 1;
183 // mask for distinguishing simple and special case countries
184 private static final int COUNTRY_TYPE_MASK = SIMPLE_CASE_COUNTRY_MASK | SPECIAL_CASE_COUNTRY_MASK;
185 // mask for the numeric code of the currency
186 private static final int NUMERIC_CODE_MASK = 0x0003FF00;
187 // shift count for the numeric code of the currency
188 private static final int NUMERIC_CODE_SHIFT = 8;
189
190 // Currency data format version
191 private static final int VALID_FORMAT_VERSION = 1;
192
193 static {
194 AccessController.doPrivileged(new PrivilegedAction<Object>() {
195 public Object run() {
196 String homeDir = System.getProperty("java.home");
197 try {
198 String dataFile = homeDir + File.separator +
199 "lib" + File.separator + "currency.data";
200 DataInputStream dis = new DataInputStream(
201 new BufferedInputStream(
202 new FileInputStream(dataFile)));
203 if (dis.readInt() != MAGIC_NUMBER) {
204 throw new InternalError("Currency data is possibly corrupted");
205 }
206 formatVersion = dis.readInt();
207 if (formatVersion != VALID_FORMAT_VERSION) {
208 throw new InternalError("Currency data format is incorrect");
209 }
210 dataVersion = dis.readInt();
211 mainTable = readIntArray(dis, A_TO_Z * A_TO_Z);
212 int scCount = dis.readInt();
213 scCutOverTimes = readLongArray(dis, scCount);
214 scOldCurrencies = readStringArray(dis, scCount);
215 scNewCurrencies = readStringArray(dis, scCount);
216 scOldCurrenciesDFD = readIntArray(dis, scCount);
217 scNewCurrenciesDFD = readIntArray(dis, scCount);
218 scOldCurrenciesNumericCode = readIntArray(dis, scCount);
219 scNewCurrenciesNumericCode = readIntArray(dis, scCount);
220 int ocCount = dis.readInt();
221 otherCurrencies = dis.readUTF();
222 otherCurrenciesDFD = readIntArray(dis, ocCount);
223 otherCurrenciesNumericCode = readIntArray(dis, ocCount);
224 dis.close();
225 } catch (IOException e) {
226 throw new InternalError(e);
227 }
228
229 // look for the properties file for overrides
230 try {
231 File propFile = new File(homeDir + File.separator +
232 "lib" + File.separator +
233 "currency.properties");
234 if (propFile.exists()) {
235 Properties props = new Properties();
236 try (FileReader fr = new FileReader(propFile)) {
237 props.load(fr);
238 }
239 Set<String> keys = props.stringPropertyNames();
240 Pattern propertiesPattern =
241 Pattern.compile("([A-Z]{3})\\s*,\\s*(\\d{3})\\s*,\\s*([0-3])");
242 for (String key : keys) {
243 replaceCurrencyData(propertiesPattern,
244 key.toUpperCase(Locale.ROOT),
245 props.getProperty(key).toUpperCase(Locale.ROOT));
246 }
247 }
248 } catch (IOException e) {
249 info("currency.properties is ignored because of an IOException", e);
250 }
251 return null;
252 }
253 });
254 }
255
256 /**
257 * Constants for retrieving localized names from the name providers.
258 */
259 private static final int SYMBOL = 0;
260 private static final int DISPLAYNAME = 1;
261
262
263 /**
264 * Constructs a <code>Currency</code> instance. The constructor is private
265 * so that we can insure that there's never more than one instance for a
266 * given currency.
267 */
268 private Currency(String currencyCode, int defaultFractionDigits, int numericCode) {
269 this.currencyCode = currencyCode;
270 this.defaultFractionDigits = defaultFractionDigits;
271 this.numericCode = numericCode;
272 }
273
274 /**
275 * Returns the <code>Currency</code> instance for the given currency code.
276 *
277 * @param currencyCode the ISO 4217 code of the currency
278 * @return the <code>Currency</code> instance for the given currency code
279 * @exception NullPointerException if <code>currencyCode</code> is null
280 * @exception IllegalArgumentException if <code>currencyCode</code> is not
281 * a supported ISO 4217 code.
282 */
283 public static Currency getInstance(String currencyCode) {
284 return getInstance(currencyCode, Integer.MIN_VALUE, 0);
285 }
286
287 private static Currency getInstance(String currencyCode, int defaultFractionDigits,
288 int numericCode) {
289 // Try to look up the currency code in the instances table.
290 // This does the null pointer check as a side effect.
291 // Also, if there already is an entry, the currencyCode must be valid.
292 Currency instance = instances.get(currencyCode);
293 if (instance != null) {
294 return instance;
295 }
296
297 if (defaultFractionDigits == Integer.MIN_VALUE) {
298 // Currency code not internally generated, need to verify first
299 // A currency code must have 3 characters and exist in the main table
300 // or in the list of other currencies.
301 if (currencyCode.length() != 3) {
302 throw new IllegalArgumentException();
303 }
304 char char1 = currencyCode.charAt(0);
305 char char2 = currencyCode.charAt(1);
306 int tableEntry = getMainTableEntry(char1, char2);
307 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
308 && tableEntry != INVALID_COUNTRY_ENTRY
309 && currencyCode.charAt(2) - 'A' == (tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK)) {
310 defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
311 numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
312 } else {
313 // Check for '-' separately so we don't get false hits in the table.
314 if (currencyCode.charAt(2) == '-') {
315 throw new IllegalArgumentException();
316 }
317 int index = otherCurrencies.indexOf(currencyCode);
318 if (index == -1) {
319 throw new IllegalArgumentException();
320 }
321 defaultFractionDigits = otherCurrenciesDFD[index / 4];
322 numericCode = otherCurrenciesNumericCode[index / 4];
323 }
324 }
325
326 Currency currencyVal =
327 new Currency(currencyCode, defaultFractionDigits, numericCode);
328 instance = instances.putIfAbsent(currencyCode, currencyVal);
329 return (instance != null ? instance : currencyVal);
330 }
331
332 /**
333 * Returns the <code>Currency</code> instance for the country of the
334 * given locale. The language and variant components of the locale
335 * are ignored. The result may vary over time, as countries change their
336 * currencies. For example, for the original member countries of the
337 * European Monetary Union, the method returns the old national currencies
338 * until December 31, 2001, and the Euro from January 1, 2002, local time
339 * of the respective countries.
340 * <p>
341 * The method returns <code>null</code> for territories that don't
342 * have a currency, such as Antarctica.
343 *
344 * @param locale the locale for whose country a <code>Currency</code>
345 * instance is needed
346 * @return the <code>Currency</code> instance for the country of the given
347 * locale, or null
348 * @exception NullPointerException if <code>locale</code> or its country
349 * code is null
350 * @exception IllegalArgumentException if the country of the given locale
351 * is not a supported ISO 3166 country code.
352 */
353 public static Currency getInstance(Locale locale) {
354 String country = locale.getCountry();
355 if (country == null) {
356 throw new NullPointerException();
357 }
358
359 if (country.length() != 2) {
360 throw new IllegalArgumentException();
361 }
362
363 char char1 = country.charAt(0);
364 char char2 = country.charAt(1);
365 int tableEntry = getMainTableEntry(char1, char2);
366 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
367 && tableEntry != INVALID_COUNTRY_ENTRY) {
368 char finalChar = (char) ((tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK) + 'A');
369 int defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
370 int numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
371 StringBuffer sb = new StringBuffer(country);
372 sb.append(finalChar);
373 return getInstance(sb.toString(), defaultFractionDigits, numericCode);
374 } else {
375 // special cases
376 if (tableEntry == INVALID_COUNTRY_ENTRY) {
377 throw new IllegalArgumentException();
378 }
379 if (tableEntry == COUNTRY_WITHOUT_CURRENCY_ENTRY) {
380 return null;
381 } else {
382 int index = (tableEntry & SPECIAL_CASE_COUNTRY_INDEX_MASK) - SPECIAL_CASE_COUNTRY_INDEX_DELTA;
383 if (scCutOverTimes[index] == Long.MAX_VALUE || System.currentTimeMillis() < scCutOverTimes[index]) {
384 return getInstance(scOldCurrencies[index], scOldCurrenciesDFD[index],
385 scOldCurrenciesNumericCode[index]);
386 } else {
387 return getInstance(scNewCurrencies[index], scNewCurrenciesDFD[index],
388 scNewCurrenciesNumericCode[index]);
389 }
390 }
391 }
392 }
393
394 /**
395 * Gets the set of available currencies. The returned set of currencies
396 * contains all of the available currencies, which may include currencies
397 * that represent obsolete ISO 4217 codes. The set can be modified
398 * without affecting the available currencies in the runtime.
399 *
400 * @return the set of available currencies. If there is no currency
401 * available in the runtime, the returned set is empty.
402 * @since 1.7
403 */
404 public static Set<Currency> getAvailableCurrencies() {
405 synchronized(Currency.class) {
406 if (available == null) {
407 available = new HashSet<>(256);
408
409 // Add simple currencies first
410 for (char c1 = 'A'; c1 <= 'Z'; c1 ++) {
411 for (char c2 = 'A'; c2 <= 'Z'; c2 ++) {
412 int tableEntry = getMainTableEntry(c1, c2);
413 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
414 && tableEntry != INVALID_COUNTRY_ENTRY) {
415 char finalChar = (char) ((tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK) + 'A');
416 int defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
417 int numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
418 StringBuilder sb = new StringBuilder();
419 sb.append(c1);
420 sb.append(c2);
421 sb.append(finalChar);
422 available.add(getInstance(sb.toString(), defaultFractionDigits, numericCode));
423 }
424 }
425 }
426
427 // Now add other currencies
428 StringTokenizer st = new StringTokenizer(otherCurrencies, "-");
429 while (st.hasMoreElements()) {
430 available.add(getInstance((String)st.nextElement()));
431 }
432 }
433 }
434
435 @SuppressWarnings("unchecked")
436 Set<Currency> result = (Set<Currency>) available.clone();
437 return result;
438 }
439
440 /**
441 * Gets the ISO 4217 currency code of this currency.
442 *
443 * @return the ISO 4217 currency code of this currency.
444 */
445 public String getCurrencyCode() {
446 return currencyCode;
447 }
448
449 /**
450 * Gets the symbol of this currency for the default locale.
451 * For example, for the US Dollar, the symbol is "$" if the default
452 * locale is the US, while for other locales it may be "US$". If no
453 * symbol can be determined, the ISO 4217 currency code is returned.
454 *
455 * @return the symbol of this currency for the default locale
456 */
457 public String getSymbol() {
458 return getSymbol(Locale.getDefault(Locale.Category.DISPLAY));
459 }
460
461 /**
462 * Gets the symbol of this currency for the specified locale.
463 * For example, for the US Dollar, the symbol is "$" if the specified
464 * locale is the US, while for other locales it may be "US$". If no
465 * symbol can be determined, the ISO 4217 currency code is returned.
466 *
467 * @param locale the locale for which a display name for this currency is
468 * needed
469 * @return the symbol of this currency for the specified locale
470 * @exception NullPointerException if <code>locale</code> is null
471 */
472 public String getSymbol(Locale locale) {
473 try {
474 // Check whether a provider can provide an implementation that's closer
475 // to the requested locale than what the Java runtime itself can provide.
476 LocaleServiceProviderPool pool =
477 LocaleServiceProviderPool.getPool(CurrencyNameProvider.class);
478
479 if (pool.hasProviders()) {
480 // Assuming that all the country locales include necessary currency
481 // symbols in the Java runtime's resources, so there is no need to
482 // examine whether Java runtime's currency resource bundle is missing
483 // names. Therefore, no resource bundle is provided for calling this
484 // method.
485 String symbol = pool.getLocalizedObject(
486 CurrencyNameGetter.INSTANCE,
487 locale, (OpenListResourceBundle)null,
488 currencyCode, SYMBOL);
489 if (symbol != null) {
490 return symbol;
491 }
492 }
493
494 ResourceBundle bundle = LocaleData.getCurrencyNames(locale);
495 return bundle.getString(currencyCode);
496 } catch (MissingResourceException e) {
497 // use currency code as symbol of last resort
498 return currencyCode;
499 }
500 }
501
502 /**
503 * Gets the default number of fraction digits used with this currency.
504 * For example, the default number of fraction digits for the Euro is 2,
505 * while for the Japanese Yen it's 0.
506 * In the case of pseudo-currencies, such as IMF Special Drawing Rights,
507 * -1 is returned.
508 *
509 * @return the default number of fraction digits used with this currency
510 */
511 public int getDefaultFractionDigits() {
512 return defaultFractionDigits;
513 }
514
515 /**
516 * Returns the ISO 4217 numeric code of this currency.
517 *
518 * @return the ISO 4217 numeric code of this currency
519 * @since 1.7
520 */
521 public int getNumericCode() {
522 return numericCode;
523 }
524
525 /**
526 * Gets the name that is suitable for displaying this currency for
527 * the default locale. If there is no suitable display name found
528 * for the default locale, the ISO 4217 currency code is returned.
529 *
530 * @return the display name of this currency for the default locale
531 * @since 1.7
532 */
533 public String getDisplayName() {
534 return getDisplayName(Locale.getDefault(Locale.Category.DISPLAY));
535 }
536
537 /**
538 * Gets the name that is suitable for displaying this currency for
539 * the specified locale. If there is no suitable display name found
540 * for the specified locale, the ISO 4217 currency code is returned.
541 *
542 * @param locale the locale for which a display name for this currency is
543 * needed
544 * @return the display name of this currency for the specified locale
545 * @exception NullPointerException if <code>locale</code> is null
546 * @since 1.7
547 */
548 public String getDisplayName(Locale locale) {
549 try {
550 OpenListResourceBundle bundle = LocaleData.getCurrencyNames(locale);
551 String result = null;
552 String bundleKey = currencyCode.toLowerCase(Locale.ROOT);
553
554 // Check whether a provider can provide an implementation that's closer
555 // to the requested locale than what the Java runtime itself can provide.
556 LocaleServiceProviderPool pool =
557 LocaleServiceProviderPool.getPool(CurrencyNameProvider.class);
558 if (pool.hasProviders()) {
559 result = pool.getLocalizedObject(
560 CurrencyNameGetter.INSTANCE,
561 locale, bundleKey, bundle, currencyCode, DISPLAYNAME);
562 }
563
564 if (result == null) {
565 result = bundle.getString(bundleKey);
566 }
567
568 if (result != null) {
569 return result;
570 }
571 } catch (MissingResourceException e) {
572 // fall through
573 }
574
575 // use currency code as symbol of last resort
576 return currencyCode;
577 }
578
579 /**
580 * Returns the ISO 4217 currency code of this currency.
581 *
582 * @return the ISO 4217 currency code of this currency
583 */
584 public String toString() {
585 return currencyCode;
586 }
587
588 /**
589 * Resolves instances being deserialized to a single instance per currency.
590 */
591 private Object readResolve() {
592 return getInstance(currencyCode);
593 }
594
595 /**
596 * Gets the main table entry for the country whose country code consists
597 * of char1 and char2.
598 */
599 private static int getMainTableEntry(char char1, char char2) {
600 if (char1 < 'A' || char1 > 'Z' || char2 < 'A' || char2 > 'Z') {
601 throw new IllegalArgumentException();
602 }
603 return mainTable[(char1 - 'A') * A_TO_Z + (char2 - 'A')];
604 }
605
606 /**
607 * Sets the main table entry for the country whose country code consists
608 * of char1 and char2.
609 */
610 private static void setMainTableEntry(char char1, char char2, int entry) {
611 if (char1 < 'A' || char1 > 'Z' || char2 < 'A' || char2 > 'Z') {
612 throw new IllegalArgumentException();
613 }
614 mainTable[(char1 - 'A') * A_TO_Z + (char2 - 'A')] = entry;
615 }
616
617 /**
618 * Obtains a localized currency names from a CurrencyNameProvider
619 * implementation.
620 */
621 private static class CurrencyNameGetter
622 implements LocaleServiceProviderPool.LocalizedObjectGetter<CurrencyNameProvider,
623 String> {
624 private static final CurrencyNameGetter INSTANCE = new CurrencyNameGetter();
625
626 public String getObject(CurrencyNameProvider currencyNameProvider,
627 Locale locale,
628 String key,
629 Object... params) {
630 assert params.length == 1;
631 int type = (Integer)params[0];
632
633 switch(type) {
634 case SYMBOL:
635 return currencyNameProvider.getSymbol(key, locale);
636 case DISPLAYNAME:
637 return currencyNameProvider.getDisplayName(key, locale);
638 default:
639 assert false; // shouldn't happen
640 }
641
642 return null;
643 }
644 }
645
646 private static int[] readIntArray(DataInputStream dis, int count) throws IOException {
647 int[] ret = new int[count];
648 for (int i = 0; i < count; i++) {
649 ret[i] = dis.readInt();
650 }
651
652 return ret;
653 }
654
655 private static long[] readLongArray(DataInputStream dis, int count) throws IOException {
656 long[] ret = new long[count];
657 for (int i = 0; i < count; i++) {
658 ret[i] = dis.readLong();
659 }
660
661 return ret;
662 }
663
664 private static String[] readStringArray(DataInputStream dis, int count) throws IOException {
665 String[] ret = new String[count];
666 for (int i = 0; i < count; i++) {
667 ret[i] = dis.readUTF();
668 }
669
670 return ret;
671 }
672
673 /**
674 * Replaces currency data found in the currencydata.properties file
675 *
676 * @param pattern regex pattern for the properties
677 * @param ctry country code
678 * @param data currency data. This is a comma separated string that
679 * consists of "three-letter alphabet code", "three-digit numeric code",
680 * and "one-digit (0,1,2, or 3) default fraction digit".
681 * For example, "JPZ,392,0".
682 * @throws
683 */
684 private static void replaceCurrencyData(Pattern pattern, String ctry, String curdata) {
685
686 if (ctry.length() != 2) {
687 // ignore invalid country code
688 String message = new StringBuilder()
689 .append("The entry in currency.properties for ")
690 .append(ctry).append(" is ignored because of the invalid country code.")
691 .toString();
692 info(message, null);
693 return;
694 }
695
696 Matcher m = pattern.matcher(curdata);
697 if (!m.find()) {
698 // format is not recognized. ignore the data
699 String message = new StringBuilder()
700 .append("The entry in currency.properties for ")
701 .append(ctry)
702 .append(" is ignored because the value format is not recognized.")
703 .toString();
704 info(message, null);
705 return;
706 }
707
708 String code = m.group(1);
709 int numeric = Integer.parseInt(m.group(2));
710 int fraction = Integer.parseInt(m.group(3));
711 int entry = numeric << NUMERIC_CODE_SHIFT;
712
713 int index;
714 for (index = 0; index < scOldCurrencies.length; index++) {
715 if (scOldCurrencies[index].equals(code)) {
716 break;
717 }
718 }
719
720 if (index == scOldCurrencies.length) {
721 // simple case
722 entry |= (fraction << SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT) |
723 (code.charAt(2) - 'A');
724 } else {
725 // special case
726 entry |= SPECIAL_CASE_COUNTRY_MASK |
727 (index + SPECIAL_CASE_COUNTRY_INDEX_DELTA);
728 }
729 setMainTableEntry(ctry.charAt(0), ctry.charAt(1), entry);
730 }
731
732 private static void info(String message, Throwable t) {
733 PlatformLogger logger = PlatformLogger.getLogger("java.util.Currency");
734 if (logger.isLoggable(PlatformLogger.INFO)) {
735 if (t != null) {
736 logger.info(message, t);
737 } else {
738 logger.info(message);
739 }
740 }
741 }
742 }