1 /* 2 * Copyright (c) 2000, 2010, 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.logging.Level; 38 import java.util.regex.Pattern; 39 import java.util.regex.Matcher; 40 import java.util.spi.CurrencyNameProvider; 41 import java.util.spi.LocaleServiceProvider; 42 import sun.util.LocaleServiceProviderPool; 43 import sun.util.logging.PlatformLogger; 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 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(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 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(Locale.Category.DISPLAY)); 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 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 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 info(String message, Throwable t) { 730 PlatformLogger logger = PlatformLogger.getLogger("java.util.Currency"); 731 if (logger.isLoggable(PlatformLogger.INFO)) { 732 if (t != null) { 733 logger.info(message, t); 734 } else { 735 logger.info(message); 736 } 737 } 738 } 739 }