1 /*
2 * Copyright 2000-2005 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any 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.logging.Level;
38 import java.util.logging.Logger;
39 import java.util.regex.Pattern;
40 import java.util.regex.Matcher;
41 import java.util.spi.CurrencyNameProvider;
42 import java.util.spi.LocaleServiceProvider;
43 import sun.util.LocaleServiceProviderPool;
44 import sun.util.resources.LocaleData;
45 import sun.util.resources.OpenListResourceBundle;
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. For example,
66 * <p>
67 * <code>
68 * #Sample currency properties<br>
69 * JP=JPZ,999,0
70 * </code>
71 * <p>
72 * will supersede the currency data for Japan.
73 *
74 * @since 1.4
75 */
76 public final class Currency implements Serializable {
77
78 private static final long serialVersionUID = -158308464356906721L;
79
80 /**
81 * ISO 4217 currency code for this currency.
82 *
83 * @serial
84 */
85 private final String currencyCode;
86
87 /**
88 * Default fraction digits for this currency.
89 * Set from currency data tables.
90 */
91 transient private final int defaultFractionDigits;
92
93 /**
94 * ISO 4217 numeric code for this currency.
95 * Set from currency data tables.
96 */
97 transient private final int numericCode;
98
99
100 // class data: instance map
101
102 private static HashMap<String, Currency> instances = new HashMap<String, Currency>(7);
103 private static HashSet<Currency> available;
104
105
106 // Class data: currency data obtained from currency.data file.
107 // Purpose:
108 // - determine valid country codes
109 // - determine valid currency codes
110 // - map country codes to currency codes
111 // - obtain default fraction digits for currency codes
112 //
113 // sc = special case; dfd = default fraction digits
114 // Simple countries are those where the country code is a prefix of the
115 // currency code, and there are no known plans to change the currency.
116 //
117 // table formats:
118 // - mainTable:
119 // - maps country code to 32-bit int
120 // - 26*26 entries, corresponding to [A-Z]*[A-Z]
121 // - \u007F -> not valid country
122 // - bits 18-31: unused
123 // - bits 8-17: numeric code (0 to 1023)
124 // - bit 7: 1 - special case, bits 0-4 indicate which one
125 // 0 - simple country, bits 0-4 indicate final char of currency code
126 // - bits 5-6: fraction digits for simple countries, 0 for special cases
127 // - bits 0-4: final char for currency code for simple country, or ID of special case
128 // - special case IDs:
129 // - 0: country has no currency
130 // - other: index into sc* arrays + 1
131 // - scCutOverTimes: cut-over time in millis as returned by
132 // System.currentTimeMillis for special case countries that are changing
133 // currencies; Long.MAX_VALUE for countries that are not changing currencies
134 // - scOldCurrencies: old currencies for special case countries
135 // - scNewCurrencies: new currencies for special case countries that are
136 // changing currencies; null for others
137 // - scOldCurrenciesDFD: default fraction digits for old currencies
138 // - scNewCurrenciesDFD: default fraction digits for new currencies, 0 for
139 // countries that are not changing currencies
140 // - otherCurrencies: concatenation of all currency codes that are not the
141 // main currency of a simple country, separated by "-"
142 // - otherCurrenciesDFD: decimal format digits for currencies in otherCurrencies, same order
143
144 static int formatVersion;
145 static int dataVersion;
146 static int[] mainTable;
147 static long[] scCutOverTimes;
148 static String[] scOldCurrencies;
149 static String[] scNewCurrencies;
150 static int[] scOldCurrenciesDFD;
151 static int[] scNewCurrenciesDFD;
152 static int[] scOldCurrenciesNumericCode;
153 static int[] scNewCurrenciesNumericCode;
154 static String otherCurrencies;
155 static int[] otherCurrenciesDFD;
156 static int[] otherCurrenciesNumericCode;
157
158 // handy constants - must match definitions in GenerateCurrencyData
159 // magic number
160 private static final int MAGIC_NUMBER = 0x43757244;
161 // number of characters from A to Z
162 private static final int A_TO_Z = ('Z' - 'A') + 1;
163 // entry for invalid country codes
164 private static final int INVALID_COUNTRY_ENTRY = 0x007F;
165 // entry for countries without currency
166 private static final int COUNTRY_WITHOUT_CURRENCY_ENTRY = 0x0080;
167 // mask for simple case country entries
168 private static final int SIMPLE_CASE_COUNTRY_MASK = 0x0000;
169 // mask for simple case country entry final character
170 private static final int SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK = 0x001F;
171 // mask for simple case country entry default currency digits
172 private static final int SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK = 0x0060;
173 // shift count for simple case country entry default currency digits
174 private static final int SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT = 5;
175 // mask for special case country entries
176 private static final int SPECIAL_CASE_COUNTRY_MASK = 0x0080;
177 // mask for special case country index
178 private static final int SPECIAL_CASE_COUNTRY_INDEX_MASK = 0x001F;
179 // delta from entry index component in main table to index into special case tables
180 private static final int SPECIAL_CASE_COUNTRY_INDEX_DELTA = 1;
181 // mask for distinguishing simple and special case countries
182 private static final int COUNTRY_TYPE_MASK = SIMPLE_CASE_COUNTRY_MASK | SPECIAL_CASE_COUNTRY_MASK;
183 // mask for the numeric code of the currency
184 private static final int NUMERIC_CODE_MASK = 0x0003FF00;
185 // shift count for the numeric code of the currency
186 private static final int NUMERIC_CODE_SHIFT = 8;
187
188 // Currency data format version
189 private static final int VALID_FORMAT_VERSION = 1;
190
191 static {
192 AccessController.doPrivileged(new PrivilegedAction() {
193 public Object run() {
194 String homeDir = System.getProperty("java.home");
195 try {
196 String dataFile = homeDir + File.separator +
197 "lib" + File.separator + "currency.data";
198 DataInputStream dis = new DataInputStream(
199 new BufferedInputStream(
200 new FileInputStream(dataFile)));
201 if (dis.readInt() != MAGIC_NUMBER) {
202 throw new InternalError("Currency data is possibly corrupted");
203 }
204 formatVersion = dis.readInt();
205 if (formatVersion != VALID_FORMAT_VERSION) {
206 throw new InternalError("Currency data format is incorrect");
207 }
208 dataVersion = dis.readInt();
209 mainTable = readIntArray(dis, A_TO_Z * A_TO_Z);
210 int scCount = dis.readInt();
211 scCutOverTimes = readLongArray(dis, scCount);
212 scOldCurrencies = readStringArray(dis, scCount);
213 scNewCurrencies = readStringArray(dis, scCount);
214 scOldCurrenciesDFD = readIntArray(dis, scCount);
215 scNewCurrenciesDFD = readIntArray(dis, scCount);
216 scOldCurrenciesNumericCode = readIntArray(dis, scCount);
217 scNewCurrenciesNumericCode = readIntArray(dis, scCount);
218 int ocCount = dis.readInt();
219 otherCurrencies = dis.readUTF();
220 otherCurrenciesDFD = readIntArray(dis, ocCount);
221 otherCurrenciesNumericCode = readIntArray(dis, ocCount);
222 dis.close();
223 } catch (IOException e) {
224 InternalError ie = new InternalError();
225 ie.initCause(e);
226 throw ie;
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 props.load(new FileReader(propFile));
237 Set<String> keys = props.stringPropertyNames();
238 Pattern propertiesPattern =
239 Pattern.compile("([A-Z]{3})\\s*,\\s*(\\d{3})\\s*,\\s*([0-3])");
240 for (String key : keys) {
241 replaceCurrencyData(propertiesPattern,
242 key.toUpperCase(Locale.ROOT),
243 props.getProperty(key).toUpperCase(Locale.ROOT));
244 }
245 }
246 } catch (IOException e) {
247 log(Level.INFO, "currency.properties is ignored because of an IOException", e);
248 }
249 return null;
250 }
251 });
252 }
253
254 /**
255 * Constants for retrieving localized names from the name providers.
256 */
257 private static final int SYMBOL = 0;
258 private static final int DISPLAYNAME = 1;
259
260
261 /**
262 * Constructs a <code>Currency</code> instance. The constructor is private
263 * so that we can insure that there's never more than one instance for a
264 * given currency.
265 */
266 private Currency(String currencyCode, int defaultFractionDigits, int numericCode) {
267 this.currencyCode = currencyCode;
268 this.defaultFractionDigits = defaultFractionDigits;
269 this.numericCode = numericCode;
270 }
271
272 /**
273 * Returns the <code>Currency</code> instance for the given currency code.
274 *
275 * @param currencyCode the ISO 4217 code of the currency
276 * @return the <code>Currency</code> instance for the given currency code
277 * @exception NullPointerException if <code>currencyCode</code> is null
278 * @exception IllegalArgumentException if <code>currencyCode</code> is not
279 * a supported ISO 4217 code.
280 */
281 public static Currency getInstance(String currencyCode) {
282 return getInstance(currencyCode, Integer.MIN_VALUE, 0);
283 }
284
285 private static Currency getInstance(String currencyCode, int defaultFractionDigits,
286 int numericCode) {
287 synchronized (instances) {
288 // Try to look up the currency code in the instances table.
289 // This does the null pointer check as a side effect.
290 // Also, if there already is an entry, the currencyCode must be valid.
291 Currency instance = instances.get(currencyCode);
292 if (instance != null) {
293 return instance;
294 }
295
296 if (defaultFractionDigits == Integer.MIN_VALUE) {
297 // Currency code not internally generated, need to verify first
298 // A currency code must have 3 characters and exist in the main table
299 // or in the list of other currencies.
300 if (currencyCode.length() != 3) {
301 throw new IllegalArgumentException();
302 }
303 char char1 = currencyCode.charAt(0);
304 char char2 = currencyCode.charAt(1);
305 int tableEntry = getMainTableEntry(char1, char2);
306 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
307 && tableEntry != INVALID_COUNTRY_ENTRY
308 && currencyCode.charAt(2) - 'A' == (tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK)) {
309 defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
310 numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
311 } else {
312 // Check for '-' separately so we don't get false hits in the table.
313 if (currencyCode.charAt(2) == '-') {
314 throw new IllegalArgumentException();
315 }
316 int index = otherCurrencies.indexOf(currencyCode);
317 if (index == -1) {
318 throw new IllegalArgumentException();
319 }
320 defaultFractionDigits = otherCurrenciesDFD[index / 4];
321 numericCode = otherCurrenciesNumericCode[index / 4];
322 }
323 }
324
325 instance = new Currency(currencyCode, defaultFractionDigits, numericCode);
326 instances.put(currencyCode, instance);
327 return instance;
328 }
329 }
330
331 /**
332 * Returns the <code>Currency</code> instance for the country of the
333 * given locale. The language and variant components of the locale
334 * are ignored. The result may vary over time, as countries change their
335 * currencies. For example, for the original member countries of the
336 * European Monetary Union, the method returns the old national currencies
337 * until December 31, 2001, and the Euro from January 1, 2002, local time
338 * of the respective countries.
339 * <p>
340 * The method returns <code>null</code> for territories that don't
341 * have a currency, such as Antarctica.
342 *
343 * @param locale the locale for whose country a <code>Currency</code>
344 * instance is needed
345 * @return the <code>Currency</code> instance for the country of the given
346 * locale, or null
347 * @exception NullPointerException if <code>locale</code> or its country
348 * code is null
349 * @exception IllegalArgumentException if the country of the given locale
350 * is not a supported ISO 3166 country code.
351 */
352 public static Currency getInstance(Locale locale) {
353 String country = locale.getCountry();
354 if (country == null) {
355 throw new NullPointerException();
356 }
357
358 if (country.length() != 2) {
359 throw new IllegalArgumentException();
360 }
361
362 char char1 = country.charAt(0);
363 char char2 = country.charAt(1);
364 int tableEntry = getMainTableEntry(char1, char2);
365 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
366 && tableEntry != INVALID_COUNTRY_ENTRY) {
367 char finalChar = (char) ((tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK) + 'A');
368 int defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
369 int numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
370 StringBuffer sb = new StringBuffer(country);
371 sb.append(finalChar);
372 return getInstance(sb.toString(), defaultFractionDigits, numericCode);
373 } else {
374 // special cases
375 if (tableEntry == INVALID_COUNTRY_ENTRY) {
376 throw new IllegalArgumentException();
377 }
378 if (tableEntry == COUNTRY_WITHOUT_CURRENCY_ENTRY) {
379 return null;
380 } else {
381 int index = (tableEntry & SPECIAL_CASE_COUNTRY_INDEX_MASK) - SPECIAL_CASE_COUNTRY_INDEX_DELTA;
382 if (scCutOverTimes[index] == Long.MAX_VALUE || System.currentTimeMillis() < scCutOverTimes[index]) {
383 return getInstance(scOldCurrencies[index], scOldCurrenciesDFD[index],
384 scOldCurrenciesNumericCode[index]);
385 } else {
386 return getInstance(scNewCurrencies[index], scNewCurrenciesDFD[index],
387 scNewCurrenciesNumericCode[index]);
388 }
389 }
390 }
391 }
392
393 /**
394 * Gets the set of available currencies. The returned set of currencies
395 * contains all of the available currencies, which may include currencies
396 * that represent obsolete ISO 4217 codes. The set can be modified
397 * without affecting the available currencies in the runtime.
398 *
399 * @return the set of available currencies. If there is no currency
400 * available in the runtime, the returned set is empty.
401 * @since 1.7
402 */
403 public static Set<Currency> getAvailableCurrencies() {
404 synchronized(Currency.class) {
405 if (available == null) {
406 available = new HashSet<Currency>(256);
407
408 // Add simple currencies first
409 for (char c1 = 'A'; c1 <= 'Z'; c1 ++) {
410 for (char c2 = 'A'; c2 <= 'Z'; c2 ++) {
411 int tableEntry = getMainTableEntry(c1, c2);
412 if ((tableEntry & COUNTRY_TYPE_MASK) == SIMPLE_CASE_COUNTRY_MASK
413 && tableEntry != INVALID_COUNTRY_ENTRY) {
414 char finalChar = (char) ((tableEntry & SIMPLE_CASE_COUNTRY_FINAL_CHAR_MASK) + 'A');
415 int defaultFractionDigits = (tableEntry & SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_MASK) >> SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT;
416 int numericCode = (tableEntry & NUMERIC_CODE_MASK) >> NUMERIC_CODE_SHIFT;
417 StringBuilder sb = new StringBuilder();
418 sb.append(c1);
419 sb.append(c2);
420 sb.append(finalChar);
421 available.add(getInstance(sb.toString(), defaultFractionDigits, numericCode));
422 }
423 }
424 }
425
426 // Now add other currencies
427 StringTokenizer st = new StringTokenizer(otherCurrencies, "-");
428 while (st.hasMoreElements()) {
429 available.add(getInstance((String)st.nextElement()));
430 }
431 }
432 }
433
434 return (Set<Currency>) available.clone();
435 }
436
437 /**
438 * Gets the ISO 4217 currency code of this currency.
439 *
440 * @return the ISO 4217 currency code of this currency.
441 */
442 public String getCurrencyCode() {
443 return currencyCode;
444 }
445
446 /**
447 * Gets the symbol of this currency for the default locale.
448 * For example, for the US Dollar, the symbol is "$" if the default
449 * locale is the US, while for other locales it may be "US$". If no
450 * symbol can be determined, the ISO 4217 currency code is returned.
451 *
452 * @return the symbol of this currency for the default locale
453 */
454 public String getSymbol() {
455 return getSymbol(Locale.getDefault());
456 }
457
458 /**
459 * Gets the symbol of this currency for the specified locale.
460 * For example, for the US Dollar, the symbol is "$" if the specified
461 * locale is the US, while for other locales it may be "US$". If no
462 * symbol can be determined, the ISO 4217 currency code is returned.
463 *
464 * @param locale the locale for which a display name for this currency is
465 * needed
466 * @return the symbol of this currency for the specified locale
467 * @exception NullPointerException if <code>locale</code> is null
468 */
469 public String getSymbol(Locale locale) {
470 try {
471 // Check whether a provider can provide an implementation that's closer
472 // to the requested locale than what the Java runtime itself can provide.
473 LocaleServiceProviderPool pool =
474 LocaleServiceProviderPool.getPool(CurrencyNameProvider.class);
475
476 if (pool.hasProviders()) {
477 // Assuming that all the country locales include necessary currency
478 // symbols in the Java runtime's resources, so there is no need to
479 // examine whether Java runtime's currency resource bundle is missing
480 // names. Therefore, no resource bundle is provided for calling this
481 // method.
482 String symbol = pool.getLocalizedObject(
483 CurrencyNameGetter.INSTANCE,
484 locale, (OpenListResourceBundle)null,
485 currencyCode, SYMBOL);
486 if (symbol != null) {
487 return symbol;
488 }
489 }
490
491 ResourceBundle bundle = LocaleData.getCurrencyNames(locale);
492 return bundle.getString(currencyCode);
493 } catch (MissingResourceException e) {
494 // use currency code as symbol of last resort
495 return currencyCode;
496 }
497 }
498
499 /**
500 * Gets the default number of fraction digits used with this currency.
501 * For example, the default number of fraction digits for the Euro is 2,
502 * while for the Japanese Yen it's 0.
503 * In the case of pseudo-currencies, such as IMF Special Drawing Rights,
504 * -1 is returned.
505 *
506 * @return the default number of fraction digits used with this currency
507 */
508 public int getDefaultFractionDigits() {
509 return defaultFractionDigits;
510 }
511
512 /**
513 * Returns the ISO 4217 numeric code of this currency.
514 *
515 * @return the ISO 4217 numeric code of this currency
516 * @since 1.7
517 */
518 public int getNumericCode() {
519 return numericCode;
520 }
521
522 /**
523 * Gets the name that is suitable for displaying this currency for
524 * the default locale. If there is no suitable display name found
525 * for the default locale, the ISO 4217 currency code is returned.
526 *
527 * @return the display name of this currency for the default locale
528 * @since 1.7
529 */
530 public String getDisplayName() {
531 return getDisplayName(Locale.getDefault());
532 }
533
534 /**
535 * Gets the name that is suitable for displaying this currency for
536 * the specified locale. If there is no suitable display name found
537 * for the specified locale, the ISO 4217 currency code is returned.
538 *
539 * @param locale the locale for which a display name for this currency is
540 * needed
541 * @return the display name of this currency for the specified locale
542 * @exception NullPointerException if <code>locale</code> is null
543 * @since 1.7
544 */
545 public String getDisplayName(Locale locale) {
546 try {
547 OpenListResourceBundle bundle = LocaleData.getCurrencyNames(locale);
548 String result = null;
549 String bundleKey = currencyCode.toLowerCase(Locale.ROOT);
550
551 // Check whether a provider can provide an implementation that's closer
552 // to the requested locale than what the Java runtime itself can provide.
553 LocaleServiceProviderPool pool =
554 LocaleServiceProviderPool.getPool(CurrencyNameProvider.class);
555 if (pool.hasProviders()) {
556 result = pool.getLocalizedObject(
557 CurrencyNameGetter.INSTANCE,
558 locale, bundleKey, bundle, currencyCode, DISPLAYNAME);
559 }
560
561 if (result == null) {
562 result = bundle.getString(bundleKey);
563 }
564
565 if (result != null) {
566 return result;
567 }
568 } catch (MissingResourceException e) {
569 // fall through
570 }
571
572 // use currency code as symbol of last resort
573 return currencyCode;
574 }
575
576 /**
577 * Returns the ISO 4217 currency code of this currency.
578 *
579 * @return the ISO 4217 currency code of this currency
580 */
581 public String toString() {
582 return currencyCode;
583 }
584
585 /**
586 * Resolves instances being deserialized to a single instance per currency.
587 */
588 private Object readResolve() {
589 return getInstance(currencyCode);
590 }
591
592 /**
593 * Gets the main table entry for the country whose country code consists
594 * of char1 and char2.
595 */
596 private static int getMainTableEntry(char char1, char char2) {
597 if (char1 < 'A' || char1 > 'Z' || char2 < 'A' || char2 > 'Z') {
598 throw new IllegalArgumentException();
599 }
600 return mainTable[(char1 - 'A') * A_TO_Z + (char2 - 'A')];
601 }
602
603 /**
604 * Sets the main table entry for the country whose country code consists
605 * of char1 and char2.
606 */
607 private static void setMainTableEntry(char char1, char char2, int entry) {
608 if (char1 < 'A' || char1 > 'Z' || char2 < 'A' || char2 > 'Z') {
609 throw new IllegalArgumentException();
610 }
611 mainTable[(char1 - 'A') * A_TO_Z + (char2 - 'A')] = entry;
612 }
613
614 /**
615 * Obtains a localized currency names from a CurrencyNameProvider
616 * implementation.
617 */
618 private static class CurrencyNameGetter
619 implements LocaleServiceProviderPool.LocalizedObjectGetter<CurrencyNameProvider,
620 String> {
621 private static final CurrencyNameGetter INSTANCE = new CurrencyNameGetter();
622
623 public String getObject(CurrencyNameProvider currencyNameProvider,
624 Locale locale,
625 String key,
626 Object... params) {
627 assert params.length == 1;
628 int type = (Integer)params[0];
629
630 switch(type) {
631 case SYMBOL:
632 return currencyNameProvider.getSymbol(key, locale);
633 case DISPLAYNAME:
634 return currencyNameProvider.getDisplayName(key, locale);
635 default:
636 assert false; // shouldn't happen
637 }
638
639 return null;
640 }
641 }
642
643 private static int[] readIntArray(DataInputStream dis, int count) throws IOException {
644 int[] ret = new int[count];
645 for (int i = 0; i < count; i++) {
646 ret[i] = dis.readInt();
647 }
648
649 return ret;
650 }
651
652 private static long[] readLongArray(DataInputStream dis, int count) throws IOException {
653 long[] ret = new long[count];
654 for (int i = 0; i < count; i++) {
655 ret[i] = dis.readLong();
656 }
657
658 return ret;
659 }
660
661 private static String[] readStringArray(DataInputStream dis, int count) throws IOException {
662 String[] ret = new String[count];
663 for (int i = 0; i < count; i++) {
664 ret[i] = dis.readUTF();
665 }
666
667 return ret;
668 }
669
670 /**
671 * Replaces currency data found in the currencydata.properties file
672 *
673 * @param pattern regex pattern for the properties
674 * @param ctry country code
675 * @param data currency data. This is a comma separated string that
676 * consists of "three-letter alphabet code", "three-digit numeric code",
677 * and "one-digit (0,1,2, or 3) default fraction digit".
678 * For example, "JPZ,392,0".
679 * @throws
680 */
681 private static void replaceCurrencyData(Pattern pattern, String ctry, String curdata) {
682
683 if (ctry.length() != 2) {
684 // ignore invalid country code
685 String message = new StringBuilder()
686 .append("The entry in currency.properties for ")
687 .append(ctry).append(" is ignored because of the invalid country code.")
688 .toString();
689 log(Level.INFO, message, null);
690 return;
691 }
692
693 Matcher m = pattern.matcher(curdata);
694 if (!m.find()) {
695 // format is not recognized. ignore the data
696 String message = new StringBuilder()
697 .append("The entry in currency.properties for ")
698 .append(ctry)
699 .append(" is ignored because the value format is not recognized.")
700 .toString();
701 log(Level.INFO, message, null);
702 return;
703 }
704
705 String code = m.group(1);
706 int numeric = Integer.parseInt(m.group(2));
707 int fraction = Integer.parseInt(m.group(3));
708 int entry = numeric << NUMERIC_CODE_SHIFT;
709
710 int index;
711 for (index = 0; index < scOldCurrencies.length; index++) {
712 if (scOldCurrencies[index].equals(code)) {
713 break;
714 }
715 }
716
717 if (index == scOldCurrencies.length) {
718 // simple case
719 entry |= (fraction << SIMPLE_CASE_COUNTRY_DEFAULT_DIGITS_SHIFT) |
720 (code.charAt(2) - 'A');
721 } else {
722 // special case
723 entry |= SPECIAL_CASE_COUNTRY_MASK |
724 (index + SPECIAL_CASE_COUNTRY_INDEX_DELTA);
725 }
726 setMainTableEntry(ctry.charAt(0), ctry.charAt(1), entry);
727 }
728
729 private static void log(Level level, String message, Throwable t) {
730 Logger logger = Logger.getLogger("java.util.Currency");
731 if (logger.isLoggable(level)) {
732 if (t != null) {
733 logger.log(level, message, t);
734 } else {
735 logger.log(level, message);
736 }
737 }
738 }
739 }
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