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| 1 | /* | ||
| 2 | * Copyright (c) 2010, 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 | /* | ||
| 27 | ******************************************************************************* | ||
| 28 | * Copyright (C) 2010, International Business Machines Corporation and * | ||
| 29 | * others. All Rights Reserved. * | ||
| 30 | ******************************************************************************* | ||
| 31 | */ | ||
| 32 | package sun.util.locale; | ||
| 33 | |||
| 34 | import java.util.ArrayList; | ||
| 35 | import java.util.Collections; | ||
| 36 | import java.util.HashMap; | ||
| 37 | import java.util.List; | ||
| 38 | import java.util.Map; | ||
| 39 | import java.util.Set; | ||
| 40 | |||
| 41 | public class LanguageTag { | ||
| 42 | // | ||
| 43 | // static fields | ||
| 44 | // | ||
| 45 | public static final String SEP = "-"; | ||
| 46 | public static final String PRIVATEUSE = "x"; | ||
| 47 | public static final String UNDETERMINED = "und"; | ||
| 48 | public static final String PRIVUSE_VARIANT_PREFIX = "lvariant"; | ||
| 49 | |||
| 50 | // | ||
| 51 | // Language subtag fields | ||
| 52 | // | ||
| 53 | private String language = ""; // language subtag | ||
| 54 | private String script = ""; // script subtag | ||
| 55 | private String region = ""; // region subtag | ||
| 56 | private String privateuse = ""; // privateuse | ||
| 57 | |||
| 58 | private List<String> extlangs = Collections.emptyList(); // extlang subtags | ||
| 59 | private List<String> variants = Collections.emptyList(); // variant subtags | ||
| 60 | private List<String> extensions = Collections.emptyList(); // extensions | ||
| 61 | |||
| 62 | // Map contains grandfathered tags and its preferred mappings from | ||
| 63 | // http://www.ietf.org/rfc/rfc5646.txt | ||
| 64 | // Keys are lower-case strings. | ||
| 65 | private static final Map<String, String[]> GRANDFATHERED = new HashMap<>(); | ||
| 66 | |||
| 67 | static { | ||
| 68 | // grandfathered = irregular ; non-redundant tags registered | ||
| 69 | // / regular ; during the RFC 3066 era | ||
| 70 | // | ||
| 71 | // irregular = "en-GB-oed" ; irregular tags do not match | ||
| 72 | // / "i-ami" ; the 'langtag' production and | ||
| 73 | // / "i-bnn" ; would not otherwise be | ||
| 74 | // / "i-default" ; considered 'well-formed' | ||
| 75 | // / "i-enochian" ; These tags are all valid, | ||
| 76 | // / "i-hak" ; but most are deprecated | ||
| 77 | // / "i-klingon" ; in favor of more modern | ||
| 78 | // / "i-lux" ; subtags or subtag | ||
| 79 | // / "i-mingo" ; combination | ||
| 80 | // / "i-navajo" | ||
| 81 | // / "i-pwn" | ||
| 82 | // / "i-tao" | ||
| 83 | // / "i-tay" | ||
| 84 | // / "i-tsu" | ||
| 85 | // / "sgn-BE-FR" | ||
| 86 | // / "sgn-BE-NL" | ||
| 87 | // / "sgn-CH-DE" | ||
| 88 | // | ||
| 89 | // regular = "art-lojban" ; these tags match the 'langtag' | ||
| 90 | // / "cel-gaulish" ; production, but their subtags | ||
| 91 | // / "no-bok" ; are not extended language | ||
| 92 | // / "no-nyn" ; or variant subtags: their meaning | ||
| 93 | // / "zh-guoyu" ; is defined by their registration | ||
| 94 | // / "zh-hakka" ; and all of these are deprecated | ||
| 95 | // / "zh-min" ; in favor of a more modern | ||
| 96 | // / "zh-min-nan" ; subtag or sequence of subtags | ||
| 97 | // / "zh-xiang" | ||
| 98 | |||
| 99 | final String[][] entries = { | ||
| 100 | //{"tag", "preferred"}, | ||
| 101 | {"art-lojban", "jbo"}, | ||
| 102 | {"cel-gaulish", "xtg-x-cel-gaulish"}, // fallback | ||
| 103 | {"en-GB-oed", "en-GB-x-oed"}, // fallback | ||
| 104 | {"i-ami", "ami"}, | ||
| 105 | {"i-bnn", "bnn"}, | ||
| 106 | {"i-default", "en-x-i-default"}, // fallback | ||
| 107 | {"i-enochian", "und-x-i-enochian"}, // fallback | ||
| 108 | {"i-hak", "hak"}, | ||
| 109 | {"i-klingon", "tlh"}, | ||
| 110 | {"i-lux", "lb"}, | ||
| 111 | {"i-mingo", "see-x-i-mingo"}, // fallback | ||
| 112 | {"i-navajo", "nv"}, | ||
| 113 | {"i-pwn", "pwn"}, | ||
| 114 | {"i-tao", "tao"}, | ||
| 115 | {"i-tay", "tay"}, | ||
| 116 | {"i-tsu", "tsu"}, | ||
| 117 | {"no-bok", "nb"}, | ||
| 118 | {"no-nyn", "nn"}, | ||
| 119 | {"sgn-BE-FR", "sfb"}, | ||
| 120 | {"sgn-BE-NL", "vgt"}, | ||
| 121 | {"sgn-CH-DE", "sgg"}, | ||
| 122 | {"zh-guoyu", "cmn"}, | ||
| 123 | {"zh-hakka", "hak"}, | ||
| 124 | {"zh-min", "nan-x-zh-min"}, // fallback | ||
| 125 | {"zh-min-nan", "nan"}, | ||
| 126 | {"zh-xiang", "hsn"}, | ||
| 127 | }; | ||
| 128 | for (String[] e : entries) { | ||
| 129 | GRANDFATHERED.put(LocaleUtils.toLowerString(e[0]), e); | ||
| 130 | } | ||
| 131 | } | ||
| 132 | |||
| 133 | private LanguageTag() { | ||
| 134 | } | ||
| 135 | |||
| 136 | /* | ||
| 137 | * BNF in RFC5464 | ||
| 138 | * | ||
| 139 | * Language-Tag = langtag ; normal language tags | ||
| 140 | * / privateuse ; private use tag | ||
| 141 | * / grandfathered ; grandfathered tags | ||
| 142 | * | ||
| 143 | * | ||
| 144 | * langtag = language | ||
| 145 | * ["-" script] | ||
| 146 | * ["-" region] | ||
| 147 | * *("-" variant) | ||
| 148 | * *("-" extension) | ||
| 149 | * ["-" privateuse] | ||
| 150 | * | ||
| 151 | * language = 2*3ALPHA ; shortest ISO 639 code | ||
| 152 | * ["-" extlang] ; sometimes followed by | ||
| 153 | * ; extended language subtags | ||
| 154 | * / 4ALPHA ; or reserved for future use | ||
| 155 | * / 5*8ALPHA ; or registered language subtag | ||
| 156 | * | ||
| 157 | * extlang = 3ALPHA ; selected ISO 639 codes | ||
| 158 | * *2("-" 3ALPHA) ; permanently reserved | ||
| 159 | * | ||
| 160 | * script = 4ALPHA ; ISO 15924 code | ||
| 161 | * | ||
| 162 | * region = 2ALPHA ; ISO 3166-1 code | ||
| 163 | * / 3DIGIT ; UN M.49 code | ||
| 164 | * | ||
| 165 | * variant = 5*8alphanum ; registered variants | ||
| 166 | * / (DIGIT 3alphanum) | ||
| 167 | * | ||
| 168 | * extension = singleton 1*("-" (2*8alphanum)) | ||
| 169 | * | ||
| 170 | * ; Single alphanumerics | ||
| 171 | * ; "x" reserved for private use | ||
| 172 | * singleton = DIGIT ; 0 - 9 | ||
| 173 | * / %x41-57 ; A - W | ||
| 174 | * / %x59-5A ; Y - Z | ||
| 175 | * / %x61-77 ; a - w | ||
| 176 | * / %x79-7A ; y - z | ||
| 177 | * | ||
| 178 | * privateuse = "x" 1*("-" (1*8alphanum)) | ||
| 179 | * | ||
| 180 | */ | ||
| 181 | public static LanguageTag parse(String languageTag, ParseStatus sts) { | ||
| 182 | if (sts == null) { | ||
| 183 | sts = new ParseStatus(); | ||
| 184 | } else { | ||
| 185 | sts.reset(); | ||
| 186 | } | ||
| 187 | |||
| 188 | StringTokenIterator itr; | ||
| 189 | |||
| 190 | // Check if the tag is grandfathered | ||
| 191 | String[] gfmap = GRANDFATHERED.get(LocaleUtils.toLowerString(languageTag)); | ||
| 192 | if (gfmap != null) { | ||
| 193 | // use preferred mapping | ||
| 194 | itr = new StringTokenIterator(gfmap[1], SEP); | ||
| 195 | } else { | ||
| 196 | itr = new StringTokenIterator(languageTag, SEP); | ||
| 197 | } | ||
| 198 | |||
| 199 | LanguageTag tag = new LanguageTag(); | ||
| 200 | |||
| 201 | // langtag must start with either language or privateuse | ||
| 202 | if (tag.parseLanguage(itr, sts)) { | ||
| 203 | tag.parseExtlangs(itr, sts); | ||
| 204 | tag.parseScript(itr, sts); | ||
| 205 | tag.parseRegion(itr, sts); | ||
| 206 | tag.parseVariants(itr, sts); | ||
| 207 | tag.parseExtensions(itr, sts); | ||
| 208 | } | ||
| 209 | tag.parsePrivateuse(itr, sts); | ||
| 210 | |||
| 211 | if (!itr.isDone() && !sts.isError()) { | ||
| 212 | String s = itr.current(); | ||
| 213 | sts.errorIndex = itr.currentStart(); | ||
| 214 | if (s.length() == 0) { | ||
| 215 | sts.errorMsg = "Empty subtag"; | ||
| 216 | } else { | ||
| 217 | sts.errorMsg = "Invalid subtag: " + s; | ||
| 218 | } | ||
| 219 | } | ||
| 220 | |||
| 221 | return tag; | ||
| 222 | } | ||
| 223 | |||
| 224 | // | ||
| 225 | // Language subtag parsers | ||
| 226 | // | ||
| 227 | |||
| 228 | private boolean parseLanguage(StringTokenIterator itr, ParseStatus sts) { | ||
| 229 | if (itr.isDone() || sts.isError()) { | ||
| 230 | return false; | ||
| 231 | } | ||
| 232 | |||
| 233 | boolean found = false; | ||
| 234 | |||
| 235 | String s = itr.current(); | ||
| 236 | if (isLanguage(s)) { | ||
| 237 | found = true; | ||
| 238 | language = s; | ||
| 239 | sts.parseLength = itr.currentEnd(); | ||
| 240 | itr.next(); | ||
| 241 | } | ||
| 242 | |||
| 243 | return found; | ||
| 244 | } | ||
| 245 | |||
| 246 | private boolean parseExtlangs(StringTokenIterator itr, ParseStatus sts) { | ||
| 247 | if (itr.isDone() || sts.isError()) { | ||
| 248 | return false; | ||
| 249 | } | ||
| 250 | |||
| 251 | boolean found = false; | ||
| 252 | |||
| 253 | while (!itr.isDone()) { | ||
| 254 | String s = itr.current(); | ||
| 255 | if (!isExtlang(s)) { | ||
| 256 | break; | ||
| 257 | } | ||
| 258 | found = true; | ||
| 259 | if (extlangs.isEmpty()) { | ||
| 260 | extlangs = new ArrayList<>(3); | ||
| 261 | } | ||
| 262 | extlangs.add(s); | ||
| 263 | sts.parseLength = itr.currentEnd(); | ||
| 264 | itr.next(); | ||
| 265 | |||
| 266 | if (extlangs.size() == 3) { | ||
| 267 | // Maximum 3 extlangs | ||
| 268 | break; | ||
| 269 | } | ||
| 270 | } | ||
| 271 | |||
| 272 | return found; | ||
| 273 | } | ||
| 274 | |||
| 275 | private boolean parseScript(StringTokenIterator itr, ParseStatus sts) { | ||
| 276 | if (itr.isDone() || sts.isError()) { | ||
| 277 | return false; | ||
| 278 | } | ||
| 279 | |||
| 280 | boolean found = false; | ||
| 281 | |||
| 282 | String s = itr.current(); | ||
| 283 | if (isScript(s)) { | ||
| 284 | found = true; | ||
| 285 | script = s; | ||
| 286 | sts.parseLength = itr.currentEnd(); | ||
| 287 | itr.next(); | ||
| 288 | } | ||
| 289 | |||
| 290 | return found; | ||
| 291 | } | ||
| 292 | |||
| 293 | private boolean parseRegion(StringTokenIterator itr, ParseStatus sts) { | ||
| 294 | if (itr.isDone() || sts.isError()) { | ||
| 295 | return false; | ||
| 296 | } | ||
| 297 | |||
| 298 | boolean found = false; | ||
| 299 | |||
| 300 | String s = itr.current(); | ||
| 301 | if (isRegion(s)) { | ||
| 302 | found = true; | ||
| 303 | region = s; | ||
| 304 | sts.parseLength = itr.currentEnd(); | ||
| 305 | itr.next(); | ||
| 306 | } | ||
| 307 | |||
| 308 | return found; | ||
| 309 | } | ||
| 310 | |||
| 311 | private boolean parseVariants(StringTokenIterator itr, ParseStatus sts) { | ||
| 312 | if (itr.isDone() || sts.isError()) { | ||
| 313 | return false; | ||
| 314 | } | ||
| 315 | |||
| 316 | boolean found = false; | ||
| 317 | |||
| 318 | while (!itr.isDone()) { | ||
| 319 | String s = itr.current(); | ||
| 320 | if (!isVariant(s)) { | ||
| 321 | break; | ||
| 322 | } | ||
| 323 | found = true; | ||
| 324 | if (variants.isEmpty()) { | ||
| 325 | variants = new ArrayList<>(3); | ||
| 326 | } | ||
| 327 | variants.add(s); | ||
| 328 | sts.parseLength = itr.currentEnd(); | ||
| 329 | itr.next(); | ||
| 330 | } | ||
| 331 | |||
| 332 | return found; | ||
| 333 | } | ||
| 334 | |||
| 335 | private boolean parseExtensions(StringTokenIterator itr, ParseStatus sts) { | ||
| 336 | if (itr.isDone() || sts.isError()) { | ||
| 337 | return false; | ||
| 338 | } | ||
| 339 | |||
| 340 | boolean found = false; | ||
| 341 | |||
| 342 | while (!itr.isDone()) { | ||
| 343 | String s = itr.current(); | ||
| 344 | if (isExtensionSingleton(s)) { | ||
| 345 | int start = itr.currentStart(); | ||
| 346 | String singleton = s; | ||
| 347 | StringBuilder sb = new StringBuilder(singleton); | ||
| 348 | |||
| 349 | itr.next(); | ||
| 350 | while (!itr.isDone()) { | ||
| 351 | s = itr.current(); | ||
| 352 | if (isExtensionSubtag(s)) { | ||
| 353 | sb.append(SEP).append(s); | ||
| 354 | sts.parseLength = itr.currentEnd(); | ||
| 355 | } else { | ||
| 356 | break; | ||
| 357 | } | ||
| 358 | itr.next(); | ||
| 359 | } | ||
| 360 | |||
| 361 | if (sts.parseLength <= start) { | ||
| 362 | sts.errorIndex = start; | ||
| 363 | sts.errorMsg = "Incomplete extension '" + singleton + "'"; | ||
| 364 | break; | ||
| 365 | } | ||
| 366 | |||
| 367 | if (extensions.isEmpty()) { | ||
| 368 | extensions = new ArrayList<>(4); | ||
| 369 | } | ||
| 370 | extensions.add(sb.toString()); | ||
| 371 | found = true; | ||
| 372 | } else { | ||
| 373 | break; | ||
| 374 | } | ||
| 375 | } | ||
| 376 | return found; | ||
| 377 | } | ||
| 378 | |||
| 379 | private boolean parsePrivateuse(StringTokenIterator itr, ParseStatus sts) { | ||
| 380 | if (itr.isDone() || sts.isError()) { | ||
| 381 | return false; | ||
| 382 | } | ||
| 383 | |||
| 384 | boolean found = false; | ||
| 385 | |||
| 386 | String s = itr.current(); | ||
| 387 | if (isPrivateusePrefix(s)) { | ||
| 388 | int start = itr.currentStart(); | ||
| 389 | StringBuilder sb = new StringBuilder(s); | ||
| 390 | |||
| 391 | itr.next(); | ||
| 392 | while (!itr.isDone()) { | ||
| 393 | s = itr.current(); | ||
| 394 | if (!isPrivateuseSubtag(s)) { | ||
| 395 | break; | ||
| 396 | } | ||
| 397 | sb.append(SEP).append(s); | ||
| 398 | sts.parseLength = itr.currentEnd(); | ||
| 399 | |||
| 400 | itr.next(); | ||
| 401 | } | ||
| 402 | |||
| 403 | if (sts.parseLength <= start) { | ||
| 404 | // need at least 1 private subtag | ||
| 405 | sts.errorIndex = start; | ||
| 406 | sts.errorMsg = "Incomplete privateuse"; | ||
| 407 | } else { | ||
| 408 | privateuse = sb.toString(); | ||
| 409 | found = true; | ||
| 410 | } | ||
| 411 | } | ||
| 412 | |||
| 413 | return found; | ||
| 414 | } | ||
| 415 | |||
| 416 | public static LanguageTag parseLocale(BaseLocale baseLocale, LocaleExtensions localeExtensions) { | ||
| 417 | LanguageTag tag = new LanguageTag(); | ||
| 418 | |||
| 419 | String language = baseLocale.getLanguage(); | ||
| 420 | String script = baseLocale.getScript(); | ||
| 421 | String region = baseLocale.getRegion(); | ||
| 422 | String variant = baseLocale.getVariant(); | ||
| 423 | |||
| 424 | boolean hasSubtag = false; | ||
| 425 | |||
| 426 | String privuseVar = null; // store ill-formed variant subtags | ||
| 427 | |||
| 428 | if (isLanguage(language)) { | ||
| 429 | // Convert a deprecated language code to its new code | ||
| 430 | if (language.equals("iw")) { | ||
| 431 | language = "he"; | ||
| 432 | } else if (language.equals("ji")) { | ||
| 433 | language = "yi"; | ||
| 434 | } else if (language.equals("in")) { | ||
| 435 | language = "id"; | ||
| 436 | } | ||
| 437 | tag.language = language; | ||
| 438 | } | ||
| 439 | |||
| 440 | if (isScript(script)) { | ||
| 441 | tag.script = canonicalizeScript(script); | ||
| 442 | hasSubtag = true; | ||
| 443 | } | ||
| 444 | |||
| 445 | if (isRegion(region)) { | ||
| 446 | tag.region = canonicalizeRegion(region); | ||
| 447 | hasSubtag = true; | ||
| 448 | } | ||
| 449 | |||
| 450 | // Special handling for no_NO_NY - use nn_NO for language tag | ||
| 451 | if (tag.language.equals("no") && tag.region.equals("NO") && variant.equals("NY")) { | ||
| 452 | tag.language = "nn"; | ||
| 453 | variant = ""; | ||
| 454 | } | ||
| 455 | |||
| 456 | if (variant.length() > 0) { | ||
| 457 | List<String> variants = null; | ||
| 458 | StringTokenIterator varitr = new StringTokenIterator(variant, BaseLocale.SEP); | ||
| 459 | while (!varitr.isDone()) { | ||
| 460 | String var = varitr.current(); | ||
| 461 | if (!isVariant(var)) { | ||
| 462 | break; | ||
| 463 | } | ||
| 464 | if (variants == null) { | ||
| 465 | variants = new ArrayList<>(); | ||
| 466 | } | ||
| 467 | variants.add(var); // Do not canonicalize! | ||
| 468 | varitr.next(); | ||
| 469 | } | ||
| 470 | if (variants != null) { | ||
| 471 | tag.variants = variants; | ||
| 472 | hasSubtag = true; | ||
| 473 | } | ||
| 474 | if (!varitr.isDone()) { | ||
| 475 | // ill-formed variant subtags | ||
| 476 | StringBuilder buf = new StringBuilder(); | ||
| 477 | while (!varitr.isDone()) { | ||
| 478 | String prvv = varitr.current(); | ||
| 479 | if (!isPrivateuseSubtag(prvv)) { | ||
| 480 | // cannot use private use subtag - truncated | ||
| 481 | break; | ||
| 482 | } | ||
| 483 | if (buf.length() > 0) { | ||
| 484 | buf.append(SEP); | ||
| 485 | } | ||
| 486 | buf.append(prvv); | ||
| 487 | varitr.next(); | ||
| 488 | } | ||
| 489 | if (buf.length() > 0) { | ||
| 490 | privuseVar = buf.toString(); | ||
| 491 | } | ||
| 492 | } | ||
| 493 | } | ||
| 494 | |||
| 495 | List<String> extensions = null; | ||
| 496 | String privateuse = null; | ||
| 497 | |||
| 498 | if (localeExtensions != null) { | ||
| 499 | Set<Character> locextKeys = localeExtensions.getKeys(); | ||
| 500 | for (Character locextKey : locextKeys) { | ||
| 501 | Extension ext = localeExtensions.getExtension(locextKey); | ||
| 502 | if (isPrivateusePrefixChar(locextKey)) { | ||
| 503 | privateuse = ext.getValue(); | ||
| 504 | } else { | ||
| 505 | if (extensions == null) { | ||
| 506 | extensions = new ArrayList<>(); | ||
| 507 | } | ||
| 508 | extensions.add(locextKey.toString() + SEP + ext.getValue()); | ||
| 509 | } | ||
| 510 | } | ||
| 511 | } | ||
| 512 | |||
| 513 | if (extensions != null) { | ||
| 514 | tag.extensions = extensions; | ||
| 515 | hasSubtag = true; | ||
| 516 | } | ||
| 517 | |||
| 518 | // append ill-formed variant subtags to private use | ||
| 519 | if (privuseVar != null) { | ||
| 520 | if (privateuse == null) { | ||
| 521 | privateuse = PRIVUSE_VARIANT_PREFIX + SEP + privuseVar; | ||
| 522 | } else { | ||
| 523 | privateuse = privateuse + SEP + PRIVUSE_VARIANT_PREFIX | ||
| 524 | + SEP + privuseVar.replace(BaseLocale.SEP, SEP); | ||
| 525 | } | ||
| 526 | } | ||
| 527 | |||
| 528 | if (privateuse != null) { | ||
| 529 | tag.privateuse = privateuse; | ||
| 530 | } | ||
| 531 | |||
| 532 | if (tag.language.length() == 0 && (hasSubtag || privateuse == null)) { | ||
| 533 | // use lang "und" when 1) no language is available AND | ||
| 534 | // 2) any of other subtags other than private use are available or | ||
| 535 | // no private use tag is available | ||
| 536 | tag.language = UNDETERMINED; | ||
| 537 | } | ||
| 538 | |||
| 539 | return tag; | ||
| 540 | } | ||
| 541 | |||
| 542 | // | ||
| 543 | // Getter methods for language subtag fields | ||
| 544 | // | ||
| 545 | |||
| 546 | public String getLanguage() { | ||
| 547 | return language; | ||
| 548 | } | ||
| 549 | |||
| 550 | public List<String> getExtlangs() { | ||
| 551 | if (extlangs.isEmpty()) { | ||
| 552 | return Collections.emptyList(); | ||
| 553 | } | ||
| 554 | return Collections.unmodifiableList(extlangs); | ||
| 555 | } | ||
| 556 | |||
| 557 | public String getScript() { | ||
| 558 | return script; | ||
| 559 | } | ||
| 560 | |||
| 561 | public String getRegion() { | ||
| 562 | return region; | ||
| 563 | } | ||
| 564 | |||
| 565 | public List<String> getVariants() { | ||
| 566 | if (variants.isEmpty()) { | ||
| 567 | return Collections.emptyList(); | ||
| 568 | } | ||
| 569 | return Collections.unmodifiableList(variants); | ||
| 570 | } | ||
| 571 | |||
| 572 | public List<String> getExtensions() { | ||
| 573 | if (extensions.isEmpty()) { | ||
| 574 | return Collections.emptyList(); | ||
| 575 | } | ||
| 576 | return Collections.unmodifiableList(extensions); | ||
| 577 | } | ||
| 578 | |||
| 579 | public String getPrivateuse() { | ||
| 580 | return privateuse; | ||
| 581 | } | ||
| 582 | |||
| 583 | // | ||
| 584 | // Language subtag syntax checking methods | ||
| 585 | // | ||
| 586 | |||
| 587 | public static boolean isLanguage(String s) { | ||
| 588 | // language = 2*3ALPHA ; shortest ISO 639 code | ||
| 589 | // ["-" extlang] ; sometimes followed by | ||
| 590 | // ; extended language subtags | ||
| 591 | // / 4ALPHA ; or reserved for future use | ||
| 592 | // / 5*8ALPHA ; or registered language subtag | ||
| 593 | int len = s.length(); | ||
| 594 | return (len >= 2) && (len <= 8) && LocaleUtils.isAlphaString(s); | ||
| 595 | } | ||
| 596 | |||
| 597 | public static boolean isExtlang(String s) { | ||
| 598 | // extlang = 3ALPHA ; selected ISO 639 codes | ||
| 599 | // *2("-" 3ALPHA) ; permanently reserved | ||
| 600 | return (s.length() == 3) && LocaleUtils.isAlphaString(s); | ||
| 601 | } | ||
| 602 | |||
| 603 | public static boolean isScript(String s) { | ||
| 604 | // script = 4ALPHA ; ISO 15924 code | ||
| 605 | return (s.length() == 4) && LocaleUtils.isAlphaString(s); | ||
| 606 | } | ||
| 607 | |||
| 608 | public static boolean isRegion(String s) { | ||
| 609 | // region = 2ALPHA ; ISO 3166-1 code | ||
| 610 | // / 3DIGIT ; UN M.49 code | ||
| 611 | return ((s.length() == 2) && LocaleUtils.isAlphaString(s)) | ||
| 612 | || ((s.length() == 3) && LocaleUtils.isNumericString(s)); | ||
| 613 | } | ||
| 614 | |||
| 615 | public static boolean isVariant(String s) { | ||
| 616 | // variant = 5*8alphanum ; registered variants | ||
| 617 | // / (DIGIT 3alphanum) | ||
| 618 | int len = s.length(); | ||
| 619 | if (len >= 5 && len <= 8) { | ||
| 620 | return LocaleUtils.isAlphaNumericString(s); | ||
| 621 | } | ||
| 622 | if (len == 4) { | ||
| 623 | return LocaleUtils.isNumeric(s.charAt(0)) | ||
| 624 | && LocaleUtils.isAlphaNumeric(s.charAt(1)) | ||
| 625 | && LocaleUtils.isAlphaNumeric(s.charAt(2)) | ||
| 626 | && LocaleUtils.isAlphaNumeric(s.charAt(3)); | ||
| 627 | } | ||
| 628 | return false; | ||
| 629 | } | ||
| 630 | |||
| 631 | public static boolean isExtensionSingleton(String s) { | ||
| 632 | // singleton = DIGIT ; 0 - 9 | ||
| 633 | // / %x41-57 ; A - W | ||
| 634 | // / %x59-5A ; Y - Z | ||
| 635 | // / %x61-77 ; a - w | ||
| 636 | // / %x79-7A ; y - z | ||
| 637 | |||
| 638 | return (s.length() == 1) | ||
| 639 | && LocaleUtils.isAlphaString(s) | ||
| 640 | && !LocaleUtils.caseIgnoreMatch(PRIVATEUSE, s); | ||
| 641 | } | ||
| 642 | |||
| 643 | public static boolean isExtensionSingletonChar(char c) { | ||
| 644 | return isExtensionSingleton(String.valueOf(c)); | ||
| 645 | } | ||
| 646 | |||
| 647 | public static boolean isExtensionSubtag(String s) { | ||
| 648 | // extension = singleton 1*("-" (2*8alphanum)) | ||
| 649 | int len = s.length(); | ||
| 650 | return (len >= 2) && (len <= 8) && LocaleUtils.isAlphaNumericString(s); | ||
| 651 | } | ||
| 652 | |||
| 653 | public static boolean isPrivateusePrefix(String s) { | ||
| 654 | // privateuse = "x" 1*("-" (1*8alphanum)) | ||
| 655 | return (s.length() == 1) | ||
| 656 | && LocaleUtils.caseIgnoreMatch(PRIVATEUSE, s); | ||
| 657 | } | ||
| 658 | |||
| 659 | public static boolean isPrivateusePrefixChar(char c) { | ||
| 660 | return (LocaleUtils.caseIgnoreMatch(PRIVATEUSE, String.valueOf(c))); | ||
| 661 | } | ||
| 662 | |||
| 663 | public static boolean isPrivateuseSubtag(String s) { | ||
| 664 | // privateuse = "x" 1*("-" (1*8alphanum)) | ||
| 665 | int len = s.length(); | ||
| 666 | return (len >= 1) && (len <= 8) && LocaleUtils.isAlphaNumericString(s); | ||
| 667 | } | ||
| 668 | |||
| 669 | // | ||
| 670 | // Language subtag canonicalization methods | ||
| 671 | // | ||
| 672 | |||
| 673 | public static String canonicalizeLanguage(String s) { | ||
| 674 | return LocaleUtils.toLowerString(s); | ||
| 675 | } | ||
| 676 | |||
| 677 | public static String canonicalizeExtlang(String s) { | ||
| 678 | return LocaleUtils.toLowerString(s); | ||
| 679 | } | ||
| 680 | |||
| 681 | public static String canonicalizeScript(String s) { | ||
| 682 | return LocaleUtils.toTitleString(s); | ||
| 683 | } | ||
| 684 | |||
| 685 | public static String canonicalizeRegion(String s) { | ||
| 686 | return LocaleUtils.toUpperString(s); | ||
| 687 | } | ||
| 688 | |||
| 689 | public static String canonicalizeVariant(String s) { | ||
| 690 | return LocaleUtils.toLowerString(s); | ||
| 691 | } | ||
| 692 | |||
| 693 | public static String canonicalizeExtension(String s) { | ||
| 694 | return LocaleUtils.toLowerString(s); | ||
| 695 | } | ||
| 696 | |||
| 697 | public static String canonicalizeExtensionSingleton(String s) { | ||
| 698 | return LocaleUtils.toLowerString(s); | ||
| 699 | } | ||
| 700 | |||
| 701 | public static String canonicalizeExtensionSubtag(String s) { | ||
| 702 | return LocaleUtils.toLowerString(s); | ||
| 703 | } | ||
| 704 | |||
| 705 | public static String canonicalizePrivateuse(String s) { | ||
| 706 | return LocaleUtils.toLowerString(s); | ||
| 707 | } | ||
| 708 | |||
| 709 | public static String canonicalizePrivateuseSubtag(String s) { | ||
| 710 | return LocaleUtils.toLowerString(s); | ||
| 711 | } | ||
| 712 | |||
| 713 | @Override | ||
| 714 | public String toString() { | ||
| 715 | StringBuilder sb = new StringBuilder(); | ||
| 716 | |||
| 717 | if (language.length() > 0) { | ||
| 718 | sb.append(language); | ||
| 719 | |||
| 720 | for (String extlang : extlangs) { | ||
| 721 | sb.append(SEP).append(extlang); | ||
| 722 | } | ||
| 723 | |||
| 724 | if (script.length() > 0) { | ||
| 725 | sb.append(SEP).append(script); | ||
| 726 | } | ||
| 727 | |||
| 728 | if (region.length() > 0) { | ||
| 729 | sb.append(SEP).append(region); | ||
| 730 | } | ||
| 731 | |||
| 732 | for (String variant : variants) { | ||
| 733 | sb.append(SEP).append(variant); | ||
| 734 | } | ||
| 735 | |||
| 736 | for (String extension : extensions) { | ||
| 737 | sb.append(SEP).append(extension); | ||
| 738 | } | ||
| 739 | } | ||
| 740 | if (privateuse.length() > 0) { | ||
| 741 | if (sb.length() > 0) { | ||
| 742 | sb.append(SEP); | ||
| 743 | } | ||
| 744 | sb.append(privateuse); | ||
| 745 | } | ||
| 746 | |||
| 747 | return sb.toString(); | ||
| 748 | } | ||
| 749 | } | ||