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| 1 | /* | ||
| 2 | * Copyright (c) 1996, 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 | /* | ||
| 27 | * (C) Copyright Taligent, Inc. 1996 - All Rights Reserved | ||
| 28 | * (C) Copyright IBM Corp. 1996 - All Rights Reserved | ||
| 29 | * | ||
| 30 | * The original version of this source code and documentation is copyrighted | ||
| 31 | * and owned by Taligent, Inc., a wholly-owned subsidiary of IBM. These | ||
| 32 | * materials are provided under terms of a License Agreement between Taligent | ||
| 33 | * and Sun. This technology is protected by multiple US and International | ||
| 34 | * patents. This notice and attribution to Taligent may not be removed. | ||
| 35 | * Taligent is a registered trademark of Taligent, Inc. | ||
| 36 | * | ||
| 37 | */ | ||
| 38 | |||
| 39 | package java.text; | ||
| 40 | |||
| 41 | import java.io.IOException; | ||
| 42 | import java.io.ObjectOutputStream; | ||
| 43 | import java.io.Serializable; | ||
| 44 | import java.lang.ref.SoftReference; | ||
| 45 | import java.text.spi.DateFormatSymbolsProvider; | ||
| 46 | import java.util.Arrays; | ||
| 47 | import java.util.List; | ||
| 48 | import java.util.Locale; | ||
| 49 | import java.util.ResourceBundle; | ||
| 50 | import java.util.TimeZone; | ||
| 51 | import java.util.concurrent.ConcurrentHashMap; | ||
| 52 | import java.util.concurrent.ConcurrentMap; | ||
| 53 | import java.util.spi.LocaleServiceProvider; | ||
| 54 | import sun.util.LocaleServiceProviderPool; | ||
| 55 | import sun.util.TimeZoneNameUtility; | ||
| 56 | import sun.util.calendar.ZoneInfo; | ||
| 57 | import sun.util.resources.LocaleData; | ||
| 58 | |||
| 59 | /** | ||
| 60 | * <code>DateFormatSymbols</code> is a public class for encapsulating | ||
| 61 | * localizable date-time formatting data, such as the names of the | ||
| 62 | * months, the names of the days of the week, and the time zone data. | ||
| 63 | * <code>DateFormat</code> and <code>SimpleDateFormat</code> both use | ||
| 64 | * <code>DateFormatSymbols</code> to encapsulate this information. | ||
| 65 | * | ||
| 66 | * <p> | ||
| 67 | * Typically you shouldn't use <code>DateFormatSymbols</code> directly. | ||
| 68 | * Rather, you are encouraged to create a date-time formatter with the | ||
| 69 | * <code>DateFormat</code> class's factory methods: <code>getTimeInstance</code>, | ||
| 70 | * <code>getDateInstance</code>, or <code>getDateTimeInstance</code>. | ||
| 71 | * These methods automatically create a <code>DateFormatSymbols</code> for | ||
| 72 | * the formatter so that you don't have to. After the | ||
| 73 | * formatter is created, you may modify its format pattern using the | ||
| 74 | * <code>setPattern</code> method. For more information about | ||
| 75 | * creating formatters using <code>DateFormat</code>'s factory methods, | ||
| 76 | * see {@link DateFormat}. | ||
| 77 | * | ||
| 78 | * <p> | ||
| 79 | * If you decide to create a date-time formatter with a specific | ||
| 80 | * format pattern for a specific locale, you can do so with: | ||
| 81 | * <blockquote> | ||
| 82 | * <pre> | ||
| 83 | * new SimpleDateFormat(aPattern, DateFormatSymbols.getInstance(aLocale)). | ||
| 84 | * </pre> | ||
| 85 | * </blockquote> | ||
| 86 | * | ||
| 87 | * <p> | ||
| 88 | * <code>DateFormatSymbols</code> objects are cloneable. When you obtain | ||
| 89 | * a <code>DateFormatSymbols</code> object, feel free to modify the | ||
| 90 | * date-time formatting data. For instance, you can replace the localized | ||
| 91 | * date-time format pattern characters with the ones that you feel easy | ||
| 92 | * to remember. Or you can change the representative cities | ||
| 93 | * to your favorite ones. | ||
| 94 | * | ||
| 95 | * <p> | ||
| 96 | * New <code>DateFormatSymbols</code> subclasses may be added to support | ||
| 97 | * <code>SimpleDateFormat</code> for date-time formatting for additional locales. | ||
| 98 | |||
| 99 | * @see DateFormat | ||
| 100 | * @see SimpleDateFormat | ||
| 101 | * @see java.util.SimpleTimeZone | ||
| 102 | * @author Chen-Lieh Huang | ||
| 103 | */ | ||
| 104 | public class DateFormatSymbols implements Serializable, Cloneable { | ||
| 105 | |||
| 106 | /** | ||
| 107 | * Construct a DateFormatSymbols object by loading format data from | ||
| 108 | * resources for the default locale. This constructor can only | ||
| 109 | * construct instances for the locales supported by the Java | ||
| 110 | * runtime environment, not for those supported by installed | ||
| 111 | * {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider} | ||
| 112 | * implementations. For full locale coverage, use the | ||
| 113 | * {@link #getInstance(Locale) getInstance} method. | ||
| 114 | * | ||
| 115 | * @see #getInstance() | ||
| 116 | * @exception java.util.MissingResourceException | ||
| 117 | * if the resources for the default locale cannot be | ||
| 118 | * found or cannot be loaded. | ||
| 119 | */ | ||
| 120 | public DateFormatSymbols() | ||
| 121 | { | ||
| 122 | initializeData(Locale.getDefault(Locale.Category.FORMAT)); | ||
| 123 | } | ||
| 124 | |||
| 125 | /** | ||
| 126 | * Construct a DateFormatSymbols object by loading format data from | ||
| 127 | * resources for the given locale. This constructor can only | ||
| 128 | * construct instances for the locales supported by the Java | ||
| 129 | * runtime environment, not for those supported by installed | ||
| 130 | * {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider} | ||
| 131 | * implementations. For full locale coverage, use the | ||
| 132 | * {@link #getInstance(Locale) getInstance} method. | ||
| 133 | * | ||
| 134 | * @see #getInstance(Locale) | ||
| 135 | * @exception java.util.MissingResourceException | ||
| 136 | * if the resources for the specified locale cannot be | ||
| 137 | * found or cannot be loaded. | ||
| 138 | */ | ||
| 139 | public DateFormatSymbols(Locale locale) | ||
| 140 | { | ||
| 141 | initializeData(locale); | ||
| 142 | } | ||
| 143 | |||
| 144 | /** | ||
| 145 | * Era strings. For example: "AD" and "BC". An array of 2 strings, | ||
| 146 | * indexed by <code>Calendar.BC</code> and <code>Calendar.AD</code>. | ||
| 147 | * @serial | ||
| 148 | */ | ||
| 149 | String eras[] = null; | ||
| 150 | |||
| 151 | /** | ||
| 152 | * Month strings. For example: "January", "February", etc. An array | ||
| 153 | * of 13 strings (some calendars have 13 months), indexed by | ||
| 154 | * <code>Calendar.JANUARY</code>, <code>Calendar.FEBRUARY</code>, etc. | ||
| 155 | * @serial | ||
| 156 | */ | ||
| 157 | String months[] = null; | ||
| 158 | |||
| 159 | /** | ||
| 160 | * Short month strings. For example: "Jan", "Feb", etc. An array of | ||
| 161 | * 13 strings (some calendars have 13 months), indexed by | ||
| 162 | * <code>Calendar.JANUARY</code>, <code>Calendar.FEBRUARY</code>, etc. | ||
| 163 | |||
| 164 | * @serial | ||
| 165 | */ | ||
| 166 | String shortMonths[] = null; | ||
| 167 | |||
| 168 | /** | ||
| 169 | * Weekday strings. For example: "Sunday", "Monday", etc. An array | ||
| 170 | * of 8 strings, indexed by <code>Calendar.SUNDAY</code>, | ||
| 171 | * <code>Calendar.MONDAY</code>, etc. | ||
| 172 | * The element <code>weekdays[0]</code> is ignored. | ||
| 173 | * @serial | ||
| 174 | */ | ||
| 175 | String weekdays[] = null; | ||
| 176 | |||
| 177 | /** | ||
| 178 | * Short weekday strings. For example: "Sun", "Mon", etc. An array | ||
| 179 | * of 8 strings, indexed by <code>Calendar.SUNDAY</code>, | ||
| 180 | * <code>Calendar.MONDAY</code>, etc. | ||
| 181 | * The element <code>shortWeekdays[0]</code> is ignored. | ||
| 182 | * @serial | ||
| 183 | */ | ||
| 184 | String shortWeekdays[] = null; | ||
| 185 | |||
| 186 | /** | ||
| 187 | * AM and PM strings. For example: "AM" and "PM". An array of | ||
| 188 | * 2 strings, indexed by <code>Calendar.AM</code> and | ||
| 189 | * <code>Calendar.PM</code>. | ||
| 190 | * @serial | ||
| 191 | */ | ||
| 192 | String ampms[] = null; | ||
| 193 | |||
| 194 | /** | ||
| 195 | * Localized names of time zones in this locale. This is a | ||
| 196 | * two-dimensional array of strings of size <em>n</em> by <em>m</em>, | ||
| 197 | * where <em>m</em> is at least 5. Each of the <em>n</em> rows is an | ||
| 198 | * entry containing the localized names for a single <code>TimeZone</code>. | ||
| 199 | * Each such row contains (with <code>i</code> ranging from | ||
| 200 | * 0..<em>n</em>-1): | ||
| 201 | * <ul> | ||
| 202 | * <li><code>zoneStrings[i][0]</code> - time zone ID</li> | ||
| 203 | * <li><code>zoneStrings[i][1]</code> - long name of zone in standard | ||
| 204 | * time</li> | ||
| 205 | * <li><code>zoneStrings[i][2]</code> - short name of zone in | ||
| 206 | * standard time</li> | ||
| 207 | * <li><code>zoneStrings[i][3]</code> - long name of zone in daylight | ||
| 208 | * saving time</li> | ||
| 209 | * <li><code>zoneStrings[i][4]</code> - short name of zone in daylight | ||
| 210 | * saving time</li> | ||
| 211 | * </ul> | ||
| 212 | * The zone ID is <em>not</em> localized; it's one of the valid IDs of | ||
| 213 | * the {@link java.util.TimeZone TimeZone} class that are not | ||
| 214 | * <a href="../java/util/TimeZone.html#CustomID">custom IDs</a>. | ||
| 215 | * All other entries are localized names. | ||
| 216 | * @see java.util.TimeZone | ||
| 217 | * @serial | ||
| 218 | */ | ||
| 219 | String zoneStrings[][] = null; | ||
| 220 | |||
| 221 | /** | ||
| 222 | * Indicates that zoneStrings is set externally with setZoneStrings() method. | ||
| 223 | */ | ||
| 224 | transient boolean isZoneStringsSet = false; | ||
| 225 | |||
| 226 | /** | ||
| 227 | * Unlocalized date-time pattern characters. For example: 'y', 'd', etc. | ||
| 228 | * All locales use the same these unlocalized pattern characters. | ||
| 229 | */ | ||
| 230 | static final String patternChars = "GyMdkHmsSEDFwWahKzZYuX"; | ||
| 231 | |||
| 232 | static final int PATTERN_ERA = 0; // G | ||
| 233 | static final int PATTERN_YEAR = 1; // y | ||
| 234 | static final int PATTERN_MONTH = 2; // M | ||
| 235 | static final int PATTERN_DAY_OF_MONTH = 3; // d | ||
| 236 | static final int PATTERN_HOUR_OF_DAY1 = 4; // k | ||
| 237 | static final int PATTERN_HOUR_OF_DAY0 = 5; // H | ||
| 238 | static final int PATTERN_MINUTE = 6; // m | ||
| 239 | static final int PATTERN_SECOND = 7; // s | ||
| 240 | static final int PATTERN_MILLISECOND = 8; // S | ||
| 241 | static final int PATTERN_DAY_OF_WEEK = 9; // E | ||
| 242 | static final int PATTERN_DAY_OF_YEAR = 10; // D | ||
| 243 | static final int PATTERN_DAY_OF_WEEK_IN_MONTH = 11; // F | ||
| 244 | static final int PATTERN_WEEK_OF_YEAR = 12; // w | ||
| 245 | static final int PATTERN_WEEK_OF_MONTH = 13; // W | ||
| 246 | static final int PATTERN_AM_PM = 14; // a | ||
| 247 | static final int PATTERN_HOUR1 = 15; // h | ||
| 248 | static final int PATTERN_HOUR0 = 16; // K | ||
| 249 | static final int PATTERN_ZONE_NAME = 17; // z | ||
| 250 | static final int PATTERN_ZONE_VALUE = 18; // Z | ||
| 251 | static final int PATTERN_WEEK_YEAR = 19; // Y | ||
| 252 | static final int PATTERN_ISO_DAY_OF_WEEK = 20; // u | ||
| 253 | static final int PATTERN_ISO_ZONE = 21; // X | ||
| 254 | |||
| 255 | /** | ||
| 256 | * Localized date-time pattern characters. For example, a locale may | ||
| 257 | * wish to use 'u' rather than 'y' to represent years in its date format | ||
| 258 | * pattern strings. | ||
| 259 | * This string must be exactly 18 characters long, with the index of | ||
| 260 | * the characters described by <code>DateFormat.ERA_FIELD</code>, | ||
| 261 | * <code>DateFormat.YEAR_FIELD</code>, etc. Thus, if the string were | ||
| 262 | * "Xz...", then localized patterns would use 'X' for era and 'z' for year. | ||
| 263 | * @serial | ||
| 264 | */ | ||
| 265 | String localPatternChars = null; | ||
| 266 | |||
| 267 | /** | ||
| 268 | * The locale which is used for initializing this DateFormatSymbols object. | ||
| 269 | * | ||
| 270 | * @since 1.6 | ||
| 271 | * @serial | ||
| 272 | */ | ||
| 273 | Locale locale = null; | ||
| 274 | |||
| 275 | /* use serialVersionUID from JDK 1.1.4 for interoperability */ | ||
| 276 | static final long serialVersionUID = -5987973545549424702L; | ||
| 277 | |||
| 278 | /** | ||
| 279 | * Returns an array of all locales for which the | ||
| 280 | * <code>getInstance</code> methods of this class can return | ||
| 281 | * localized instances. | ||
| 282 | * The returned array represents the union of locales supported by the | ||
| 283 | * Java runtime and by installed | ||
| 284 | * {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider} | ||
| 285 | * implementations. It must contain at least a <code>Locale</code> | ||
| 286 | * instance equal to {@link java.util.Locale#US Locale.US}. | ||
| 287 | * | ||
| 288 | * @return An array of locales for which localized | ||
| 289 | * <code>DateFormatSymbols</code> instances are available. | ||
| 290 | * @since 1.6 | ||
| 291 | */ | ||
| 292 | public static Locale[] getAvailableLocales() { | ||
| 293 | LocaleServiceProviderPool pool= | ||
| 294 | LocaleServiceProviderPool.getPool(DateFormatSymbolsProvider.class); | ||
| 295 | return pool.getAvailableLocales(); | ||
| 296 | } | ||
| 297 | |||
| 298 | /** | ||
| 299 | * Gets the <code>DateFormatSymbols</code> instance for the default | ||
| 300 | * locale. This method provides access to <code>DateFormatSymbols</code> | ||
| 301 | * instances for locales supported by the Java runtime itself as well | ||
| 302 | * as for those supported by installed | ||
| 303 | * {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider} | ||
| 304 | * implementations. | ||
| 305 | * @return a <code>DateFormatSymbols</code> instance. | ||
| 306 | * @since 1.6 | ||
| 307 | */ | ||
| 308 | public static final DateFormatSymbols getInstance() { | ||
| 309 | return getInstance(Locale.getDefault(Locale.Category.FORMAT)); | ||
| 310 | } | ||
| 311 | |||
| 312 | /** | ||
| 313 | * Gets the <code>DateFormatSymbols</code> instance for the specified | ||
| 314 | * locale. This method provides access to <code>DateFormatSymbols</code> | ||
| 315 | * instances for locales supported by the Java runtime itself as well | ||
| 316 | * as for those supported by installed | ||
| 317 | * {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider} | ||
| 318 | * implementations. | ||
| 319 | * @param locale the given locale. | ||
| 320 | * @return a <code>DateFormatSymbols</code> instance. | ||
| 321 | * @exception NullPointerException if <code>locale</code> is null | ||
| 322 | * @since 1.6 | ||
| 323 | */ | ||
| 324 | public static final DateFormatSymbols getInstance(Locale locale) { | ||
| 325 | DateFormatSymbols dfs = getProviderInstance(locale); | ||
| 326 | if (dfs != null) { | ||
| 327 | return dfs; | ||
| 328 | } | ||
| 329 | return (DateFormatSymbols) getCachedInstance(locale).clone(); | ||
| 330 | } | ||
| 331 | |||
| 332 | /** | ||
| 333 | * Returns a DateFormatSymbols provided by a provider or found in | ||
| 334 | * the cache. Note that this method returns a cached instance, | ||
| 335 | * not its clone. Therefore, the instance should never be given to | ||
| 336 | * an application. | ||
| 337 | */ | ||
| 338 | static final DateFormatSymbols getInstanceRef(Locale locale) { | ||
| 339 | DateFormatSymbols dfs = getProviderInstance(locale); | ||
| 340 | if (dfs != null) { | ||
| 341 | return dfs; | ||
| 342 | } | ||
| 343 | return getCachedInstance(locale); | ||
| 344 | } | ||
| 345 | |||
| 346 | private static DateFormatSymbols getProviderInstance(Locale locale) { | ||
| 347 | DateFormatSymbols providersInstance = null; | ||
| 348 | |||
| 349 | // Check whether a provider can provide an implementation that's closer | ||
| 350 | // to the requested locale than what the Java runtime itself can provide. | ||
| 351 | LocaleServiceProviderPool pool = | ||
| 352 | LocaleServiceProviderPool.getPool(DateFormatSymbolsProvider.class); | ||
| 353 | if (pool.hasProviders()) { | ||
| 354 | providersInstance = pool.getLocalizedObject( | ||
| 355 | DateFormatSymbolsGetter.INSTANCE, locale); | ||
| 356 | } | ||
| 357 | return providersInstance; | ||
| 358 | } | ||
| 359 | |||
| 360 | /** | ||
| 361 | * Returns a cached DateFormatSymbols if it's found in the | ||
| 362 | * cache. Otherwise, this method returns a newly cached instance | ||
| 363 | * for the given locale. | ||
| 364 | */ | ||
| 365 | private static DateFormatSymbols getCachedInstance(Locale locale) { | ||
| 366 | SoftReference<DateFormatSymbols> ref = cachedInstances.get(locale); | ||
| 367 | DateFormatSymbols dfs = null; | ||
| 368 | if (ref == null || (dfs = ref.get()) == null) { | ||
| 369 | dfs = new DateFormatSymbols(locale); | ||
| 370 | ref = new SoftReference<DateFormatSymbols>(dfs); | ||
| 371 | SoftReference<DateFormatSymbols> x = cachedInstances.putIfAbsent(locale, ref); | ||
| 372 | if (x != null) { | ||
| 373 | DateFormatSymbols y = x.get(); | ||
| 374 | if (y != null) { | ||
| 375 | dfs = y; | ||
| 376 | } else { | ||
| 377 | // Replace the empty SoftReference with ref. | ||
| 378 | cachedInstances.put(locale, ref); | ||
| 379 | } | ||
| 380 | } | ||
| 381 | } | ||
| 382 | return dfs; | ||
| 383 | } | ||
| 384 | |||
| 385 | /** | ||
| 386 | * Gets era strings. For example: "AD" and "BC". | ||
| 387 | * @return the era strings. | ||
| 388 | */ | ||
| 389 | public String[] getEras() { | ||
| 390 | return Arrays.copyOf(eras, eras.length); | ||
| 391 | } | ||
| 392 | |||
| 393 | /** | ||
| 394 | * Sets era strings. For example: "AD" and "BC". | ||
| 395 | * @param newEras the new era strings. | ||
| 396 | */ | ||
| 397 | public void setEras(String[] newEras) { | ||
| 398 | eras = Arrays.copyOf(newEras, newEras.length); | ||
| 399 | } | ||
| 400 | |||
| 401 | /** | ||
| 402 | * Gets month strings. For example: "January", "February", etc. | ||
| 403 | * @return the month strings. | ||
| 404 | */ | ||
| 405 | public String[] getMonths() { | ||
| 406 | return Arrays.copyOf(months, months.length); | ||
| 407 | } | ||
| 408 | |||
| 409 | /** | ||
| 410 | * Sets month strings. For example: "January", "February", etc. | ||
| 411 | * @param newMonths the new month strings. | ||
| 412 | */ | ||
| 413 | public void setMonths(String[] newMonths) { | ||
| 414 | months = Arrays.copyOf(newMonths, newMonths.length); | ||
| 415 | } | ||
| 416 | |||
| 417 | /** | ||
| 418 | * Gets short month strings. For example: "Jan", "Feb", etc. | ||
| 419 | * @return the short month strings. | ||
| 420 | */ | ||
| 421 | public String[] getShortMonths() { | ||
| 422 | return Arrays.copyOf(shortMonths, shortMonths.length); | ||
| 423 | } | ||
| 424 | |||
| 425 | /** | ||
| 426 | * Sets short month strings. For example: "Jan", "Feb", etc. | ||
| 427 | * @param newShortMonths the new short month strings. | ||
| 428 | */ | ||
| 429 | public void setShortMonths(String[] newShortMonths) { | ||
| 430 | shortMonths = Arrays.copyOf(newShortMonths, newShortMonths.length); | ||
| 431 | } | ||
| 432 | |||
| 433 | /** | ||
| 434 | * Gets weekday strings. For example: "Sunday", "Monday", etc. | ||
| 435 | * @return the weekday strings. Use <code>Calendar.SUNDAY</code>, | ||
| 436 | * <code>Calendar.MONDAY</code>, etc. to index the result array. | ||
| 437 | */ | ||
| 438 | public String[] getWeekdays() { | ||
| 439 | return Arrays.copyOf(weekdays, weekdays.length); | ||
| 440 | } | ||
| 441 | |||
| 442 | /** | ||
| 443 | * Sets weekday strings. For example: "Sunday", "Monday", etc. | ||
| 444 | * @param newWeekdays the new weekday strings. The array should | ||
| 445 | * be indexed by <code>Calendar.SUNDAY</code>, | ||
| 446 | * <code>Calendar.MONDAY</code>, etc. | ||
| 447 | */ | ||
| 448 | public void setWeekdays(String[] newWeekdays) { | ||
| 449 | weekdays = Arrays.copyOf(newWeekdays, newWeekdays.length); | ||
| 450 | } | ||
| 451 | |||
| 452 | /** | ||
| 453 | * Gets short weekday strings. For example: "Sun", "Mon", etc. | ||
| 454 | * @return the short weekday strings. Use <code>Calendar.SUNDAY</code>, | ||
| 455 | * <code>Calendar.MONDAY</code>, etc. to index the result array. | ||
| 456 | */ | ||
| 457 | public String[] getShortWeekdays() { | ||
| 458 | return Arrays.copyOf(shortWeekdays, shortWeekdays.length); | ||
| 459 | } | ||
| 460 | |||
| 461 | /** | ||
| 462 | * Sets short weekday strings. For example: "Sun", "Mon", etc. | ||
| 463 | * @param newShortWeekdays the new short weekday strings. The array should | ||
| 464 | * be indexed by <code>Calendar.SUNDAY</code>, | ||
| 465 | * <code>Calendar.MONDAY</code>, etc. | ||
| 466 | */ | ||
| 467 | public void setShortWeekdays(String[] newShortWeekdays) { | ||
| 468 | shortWeekdays = Arrays.copyOf(newShortWeekdays, newShortWeekdays.length); | ||
| 469 | } | ||
| 470 | |||
| 471 | /** | ||
| 472 | * Gets ampm strings. For example: "AM" and "PM". | ||
| 473 | * @return the ampm strings. | ||
| 474 | */ | ||
| 475 | public String[] getAmPmStrings() { | ||
| 476 | return Arrays.copyOf(ampms, ampms.length); | ||
| 477 | } | ||
| 478 | |||
| 479 | /** | ||
| 480 | * Sets ampm strings. For example: "AM" and "PM". | ||
| 481 | * @param newAmpms the new ampm strings. | ||
| 482 | */ | ||
| 483 | public void setAmPmStrings(String[] newAmpms) { | ||
| 484 | ampms = Arrays.copyOf(newAmpms, newAmpms.length); | ||
| 485 | } | ||
| 486 | |||
| 487 | /** | ||
| 488 | * Gets time zone strings. Use of this method is discouraged; use | ||
| 489 | * {@link java.util.TimeZone#getDisplayName() TimeZone.getDisplayName()} | ||
| 490 | * instead. | ||
| 491 | * <p> | ||
| 492 | * The value returned is a | ||
| 493 | * two-dimensional array of strings of size <em>n</em> by <em>m</em>, | ||
| 494 | * where <em>m</em> is at least 5. Each of the <em>n</em> rows is an | ||
| 495 | * entry containing the localized names for a single <code>TimeZone</code>. | ||
| 496 | * Each such row contains (with <code>i</code> ranging from | ||
| 497 | * 0..<em>n</em>-1): | ||
| 498 | * <ul> | ||
| 499 | * <li><code>zoneStrings[i][0]</code> - time zone ID</li> | ||
| 500 | * <li><code>zoneStrings[i][1]</code> - long name of zone in standard | ||
| 501 | * time</li> | ||
| 502 | * <li><code>zoneStrings[i][2]</code> - short name of zone in | ||
| 503 | * standard time</li> | ||
| 504 | * <li><code>zoneStrings[i][3]</code> - long name of zone in daylight | ||
| 505 | * saving time</li> | ||
| 506 | * <li><code>zoneStrings[i][4]</code> - short name of zone in daylight | ||
| 507 | * saving time</li> | ||
| 508 | * </ul> | ||
| 509 | * The zone ID is <em>not</em> localized; it's one of the valid IDs of | ||
| 510 | * the {@link java.util.TimeZone TimeZone} class that are not | ||
| 511 | * <a href="../util/TimeZone.html#CustomID">custom IDs</a>. | ||
| 512 | * All other entries are localized names. If a zone does not implement | ||
| 513 | * daylight saving time, the daylight saving time names should not be used. | ||
| 514 | * <p> | ||
| 515 | * If {@link #setZoneStrings(String[][]) setZoneStrings} has been called | ||
| 516 | * on this <code>DateFormatSymbols</code> instance, then the strings | ||
| 517 | * provided by that call are returned. Otherwise, the returned array | ||
| 518 | * contains names provided by the Java runtime and by installed | ||
| 519 | * {@link java.util.spi.TimeZoneNameProvider TimeZoneNameProvider} | ||
| 520 | * implementations. | ||
| 521 | * | ||
| 522 | * @return the time zone strings. | ||
| 523 | * @see #setZoneStrings(String[][]) | ||
| 524 | */ | ||
| 525 | public String[][] getZoneStrings() { | ||
| 526 | return getZoneStringsImpl(true); | ||
| 527 | } | ||
| 528 | |||
| 529 | /** | ||
| 530 | * Sets time zone strings. The argument must be a | ||
| 531 | * two-dimensional array of strings of size <em>n</em> by <em>m</em>, | ||
| 532 | * where <em>m</em> is at least 5. Each of the <em>n</em> rows is an | ||
| 533 | * entry containing the localized names for a single <code>TimeZone</code>. | ||
| 534 | * Each such row contains (with <code>i</code> ranging from | ||
| 535 | * 0..<em>n</em>-1): | ||
| 536 | * <ul> | ||
| 537 | * <li><code>zoneStrings[i][0]</code> - time zone ID</li> | ||
| 538 | * <li><code>zoneStrings[i][1]</code> - long name of zone in standard | ||
| 539 | * time</li> | ||
| 540 | * <li><code>zoneStrings[i][2]</code> - short name of zone in | ||
| 541 | * standard time</li> | ||
| 542 | * <li><code>zoneStrings[i][3]</code> - long name of zone in daylight | ||
| 543 | * saving time</li> | ||
| 544 | * <li><code>zoneStrings[i][4]</code> - short name of zone in daylight | ||
| 545 | * saving time</li> | ||
| 546 | * </ul> | ||
| 547 | * The zone ID is <em>not</em> localized; it's one of the valid IDs of | ||
| 548 | * the {@link java.util.TimeZone TimeZone} class that are not | ||
| 549 | * <a href="../util/TimeZone.html#CustomID">custom IDs</a>. | ||
| 550 | * All other entries are localized names. | ||
| 551 | * | ||
| 552 | * @param newZoneStrings the new time zone strings. | ||
| 553 | * @exception IllegalArgumentException if the length of any row in | ||
| 554 | * <code>newZoneStrings</code> is less than 5 | ||
| 555 | * @exception NullPointerException if <code>newZoneStrings</code> is null | ||
| 556 | * @see #getZoneStrings() | ||
| 557 | */ | ||
| 558 | public void setZoneStrings(String[][] newZoneStrings) { | ||
| 559 | String[][] aCopy = new String[newZoneStrings.length][]; | ||
| 560 | for (int i = 0; i < newZoneStrings.length; ++i) { | ||
| 561 | int len = newZoneStrings[i].length; | ||
| 562 | if (len < 5) { | ||
| 563 | throw new IllegalArgumentException(); | ||
| 564 | } | ||
| 565 | aCopy[i] = Arrays.copyOf(newZoneStrings[i], len); | ||
| 566 | } | ||
| 567 | zoneStrings = aCopy; | ||
| 568 | isZoneStringsSet = true; | ||
| 569 | } | ||
| 570 | |||
| 571 | /** | ||
| 572 | * Gets localized date-time pattern characters. For example: 'u', 't', etc. | ||
| 573 | * @return the localized date-time pattern characters. | ||
| 574 | */ | ||
| 575 | public String getLocalPatternChars() { | ||
| 576 | return localPatternChars; | ||
| 577 | } | ||
| 578 | |||
| 579 | /** | ||
| 580 | * Sets localized date-time pattern characters. For example: 'u', 't', etc. | ||
| 581 | * @param newLocalPatternChars the new localized date-time | ||
| 582 | * pattern characters. | ||
| 583 | */ | ||
| 584 | public void setLocalPatternChars(String newLocalPatternChars) { | ||
| 585 | // Call toString() to throw an NPE in case the argument is null | ||
| 586 | localPatternChars = newLocalPatternChars.toString(); | ||
| 587 | } | ||
| 588 | |||
| 589 | /** | ||
| 590 | * Overrides Cloneable | ||
| 591 | */ | ||
| 592 | public Object clone() | ||
| 593 | { | ||
| 594 | try | ||
| 595 | { | ||
| 596 | DateFormatSymbols other = (DateFormatSymbols)super.clone(); | ||
| 597 | copyMembers(this, other); | ||
| 598 | return other; | ||
| 599 | } catch (CloneNotSupportedException e) { | ||
| 600 | throw new InternalError(); | ||
| 601 | } | ||
| 602 | } | ||
| 603 | |||
| 604 | /** | ||
| 605 | * Override hashCode. | ||
| 606 | * Generates a hash code for the DateFormatSymbols object. | ||
| 607 | */ | ||
| 608 | public int hashCode() { | ||
| 609 | int hashcode = 0; | ||
| 610 | String[][] zoneStrings = getZoneStringsWrapper(); | ||
| 611 | for (int index = 0; index < zoneStrings[0].length; ++index) | ||
| 612 | hashcode ^= zoneStrings[0][index].hashCode(); | ||
| 613 | return hashcode; | ||
| 614 | } | ||
| 615 | |||
| 616 | /** | ||
| 617 | * Override equals | ||
| 618 | */ | ||
| 619 | public boolean equals(Object obj) | ||
| 620 | { | ||
| 621 | if (this == obj) return true; | ||
| 622 | if (obj == null || getClass() != obj.getClass()) return false; | ||
| 623 | DateFormatSymbols that = (DateFormatSymbols) obj; | ||
| 624 | return (Arrays.equals(eras, that.eras) | ||
| 625 | && Arrays.equals(months, that.months) | ||
| 626 | && Arrays.equals(shortMonths, that.shortMonths) | ||
| 627 | && Arrays.equals(weekdays, that.weekdays) | ||
| 628 | && Arrays.equals(shortWeekdays, that.shortWeekdays) | ||
| 629 | && Arrays.equals(ampms, that.ampms) | ||
| 630 | && Arrays.deepEquals(getZoneStringsWrapper(), that.getZoneStringsWrapper()) | ||
| 631 | && ((localPatternChars != null | ||
| 632 | && localPatternChars.equals(that.localPatternChars)) | ||
| 633 | || (localPatternChars == null | ||
| 634 | && that.localPatternChars == null))); | ||
| 635 | } | ||
| 636 | |||
| 637 | // =======================privates=============================== | ||
| 638 | |||
| 639 | /** | ||
| 640 | * Useful constant for defining time zone offsets. | ||
| 641 | */ | ||
| 642 | static final int millisPerHour = 60*60*1000; | ||
| 643 | |||
| 644 | /** | ||
| 645 | * Cache to hold DateFormatSymbols instances per Locale. | ||
| 646 | */ | ||
| 647 | private static final ConcurrentMap<Locale, SoftReference<DateFormatSymbols>> cachedInstances | ||
| 648 | = new ConcurrentHashMap<Locale, SoftReference<DateFormatSymbols>>(3); | ||
| 649 | |||
| 650 | private void initializeData(Locale desiredLocale) { | ||
| 651 | locale = desiredLocale; | ||
| 652 | |||
| 653 | // Copy values of a cached instance if any. | ||
| 654 | SoftReference<DateFormatSymbols> ref = cachedInstances.get(locale); | ||
| 655 | DateFormatSymbols dfs; | ||
| 656 | if (ref != null && (dfs = ref.get()) != null) { | ||
| 657 | copyMembers(dfs, this); | ||
| 658 | return; | ||
| 659 | } | ||
| 660 | |||
| 661 | // Initialize the fields from the ResourceBundle for locale. | ||
| 662 | ResourceBundle resource = LocaleData.getDateFormatData(locale); | ||
| 663 | |||
| 664 | eras = resource.getStringArray("Eras"); | ||
| 665 | months = resource.getStringArray("MonthNames"); | ||
| 666 | shortMonths = resource.getStringArray("MonthAbbreviations"); | ||
| 667 | ampms = resource.getStringArray("AmPmMarkers"); | ||
| 668 | localPatternChars = resource.getString("DateTimePatternChars"); | ||
| 669 | |||
| 670 | // Day of week names are stored in a 1-based array. | ||
| 671 | weekdays = toOneBasedArray(resource.getStringArray("DayNames")); | ||
| 672 | shortWeekdays = toOneBasedArray(resource.getStringArray("DayAbbreviations")); | ||
| 673 | } | ||
| 674 | |||
| 675 | private static String[] toOneBasedArray(String[] src) { | ||
| 676 | int len = src.length; | ||
| 677 | String[] dst = new String[len + 1]; | ||
| 678 | dst[0] = ""; | ||
| 679 | for (int i = 0; i < len; i++) { | ||
| 680 | dst[i + 1] = src[i]; | ||
| 681 | } | ||
| 682 | return dst; | ||
| 683 | } | ||
| 684 | |||
| 685 | /** | ||
| 686 | * Package private: used by SimpleDateFormat | ||
| 687 | * Gets the index for the given time zone ID to obtain the time zone | ||
| 688 | * strings for formatting. The time zone ID is just for programmatic | ||
| 689 | * lookup. NOT LOCALIZED!!! | ||
| 690 | * @param ID the given time zone ID. | ||
| 691 | * @return the index of the given time zone ID. Returns -1 if | ||
| 692 | * the given time zone ID can't be located in the DateFormatSymbols object. | ||
| 693 | * @see java.util.SimpleTimeZone | ||
| 694 | */ | ||
| 695 | final int getZoneIndex(String ID) | ||
| 696 | { | ||
| 697 | String[][] zoneStrings = getZoneStringsWrapper(); | ||
| 698 | for (int index=0; index<zoneStrings.length; index++) | ||
| 699 | { | ||
| 700 | if (ID.equals(zoneStrings[index][0])) return index; | ||
| 701 | } | ||
| 702 | |||
| 703 | return -1; | ||
| 704 | } | ||
| 705 | |||
| 706 | /** | ||
| 707 | * Wrapper method to the getZoneStrings(), which is called from inside | ||
| 708 | * the java.text package and not to mutate the returned arrays, so that | ||
| 709 | * it does not need to create a defensive copy. | ||
| 710 | */ | ||
| 711 | final String[][] getZoneStringsWrapper() { | ||
| 712 | if (isSubclassObject()) { | ||
| 713 | return getZoneStrings(); | ||
| 714 | } else { | ||
| 715 | return getZoneStringsImpl(false); | ||
| 716 | } | ||
| 717 | } | ||
| 718 | |||
| 719 | private final String[][] getZoneStringsImpl(boolean needsCopy) { | ||
| 720 | if (zoneStrings == null) { | ||
| 721 | zoneStrings = TimeZoneNameUtility.getZoneStrings(locale); | ||
| 722 | } | ||
| 723 | |||
| 724 | if (!needsCopy) { | ||
| 725 | return zoneStrings; | ||
| 726 | } | ||
| 727 | |||
| 728 | int len = zoneStrings.length; | ||
| 729 | String[][] aCopy = new String[len][]; | ||
| 730 | for (int i = 0; i < len; i++) { | ||
| 731 | aCopy[i] = Arrays.copyOf(zoneStrings[i], zoneStrings[i].length); | ||
| 732 | } | ||
| 733 | return aCopy; | ||
| 734 | } | ||
| 735 | |||
| 736 | private final boolean isSubclassObject() { | ||
| 737 | return !getClass().getName().equals("java.text.DateFormatSymbols"); | ||
| 738 | } | ||
| 739 | |||
| 740 | /** | ||
| 741 | * Clones all the data members from the source DateFormatSymbols to | ||
| 742 | * the target DateFormatSymbols. This is only for subclasses. | ||
| 743 | * @param src the source DateFormatSymbols. | ||
| 744 | * @param dst the target DateFormatSymbols. | ||
| 745 | */ | ||
| 746 | private final void copyMembers(DateFormatSymbols src, DateFormatSymbols dst) | ||
| 747 | { | ||
| 748 | dst.eras = Arrays.copyOf(src.eras, src.eras.length); | ||
| 749 | dst.months = Arrays.copyOf(src.months, src.months.length); | ||
| 750 | dst.shortMonths = Arrays.copyOf(src.shortMonths, src.shortMonths.length); | ||
| 751 | dst.weekdays = Arrays.copyOf(src.weekdays, src.weekdays.length); | ||
| 752 | dst.shortWeekdays = Arrays.copyOf(src.shortWeekdays, src.shortWeekdays.length); | ||
| 753 | dst.ampms = Arrays.copyOf(src.ampms, src.ampms.length); | ||
| 754 | if (src.zoneStrings != null) { | ||
| 755 | dst.zoneStrings = src.getZoneStringsImpl(true); | ||
| 756 | } else { | ||
| 757 | dst.zoneStrings = null; | ||
| 758 | } | ||
| 759 | dst.localPatternChars = src.localPatternChars; | ||
| 760 | } | ||
| 761 | |||
| 762 | /** | ||
| 763 | * Write out the default serializable data, after ensuring the | ||
| 764 | * <code>zoneStrings</code> field is initialized in order to make | ||
| 765 | * sure the backward compatibility. | ||
| 766 | * | ||
| 767 | * @since 1.6 | ||
| 768 | */ | ||
| 769 | private void writeObject(ObjectOutputStream stream) throws IOException { | ||
| 770 | if (zoneStrings == null) { | ||
| 771 | zoneStrings = TimeZoneNameUtility.getZoneStrings(locale); | ||
| 772 | } | ||
| 773 | stream.defaultWriteObject(); | ||
| 774 | } | ||
| 775 | |||
| 776 | /** | ||
| 777 | * Obtains a DateFormatSymbols instance from a DateFormatSymbolsProvider | ||
| 778 | * implementation. | ||
| 779 | */ | ||
| 780 | private static class DateFormatSymbolsGetter | ||
| 781 | implements LocaleServiceProviderPool.LocalizedObjectGetter<DateFormatSymbolsProvider, | ||
| 782 | DateFormatSymbols> { | ||
| 783 | private static final DateFormatSymbolsGetter INSTANCE = | ||
| 784 | new DateFormatSymbolsGetter(); | ||
| 785 | |||
| 786 | public DateFormatSymbols getObject(DateFormatSymbolsProvider dateFormatSymbolsProvider, | ||
| 787 | Locale locale, | ||
| 788 | String key, | ||
| 789 | Object... params) { | ||
| 790 | assert params.length == 0; | ||
| 791 | return dateFormatSymbolsProvider.getInstance(locale); | ||
| 792 | } | ||
| 793 | } | ||
| 794 | } | ||