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