1 /* 2 ********************************************************************** 3 * Copyright (C) 1997-2010, International Business Machines 4 * Corporation and others. All Rights Reserved. 5 ********************************************************************** 6 * 7 * File ULOC.H 8 * 9 * Modification History: 10 * 11 * Date Name Description 12 * 04/01/97 aliu Creation. 13 * 08/22/98 stephen JDK 1.2 sync. 14 * 12/08/98 rtg New C API for Locale 15 * 03/30/99 damiba overhaul 16 * 03/31/99 helena Javadoc for uloc functions. 17 * 04/15/99 Madhu Updated Javadoc 18 ******************************************************************************** 19 */ 20 21 #ifndef ULOC_H 22 #define ULOC_H 23 24 #include "unicode/utypes.h" 25 #include "unicode/uenum.h" 26 27 /** 28 * \file 29 * \brief C API: Locale 30 * 31 * <h2> ULoc C API for Locale </h2> 32 * A <code>Locale</code> represents a specific geographical, political, 33 * or cultural region. An operation that requires a <code>Locale</code> to perform 34 * its task is called <em>locale-sensitive</em> and uses the <code>Locale</code> 35 * to tailor information for the user. For example, displaying a number 36 * is a locale-sensitive operation--the number should be formatted 37 * according to the customs/conventions of the user's native country, 38 * region, or culture. In the C APIs, a locales is simply a const char string. 39 * 40 * <P> 41 * You create a <code>Locale</code> with one of the three options listed below. 42 * Each of the component is separated by '_' in the locale string. 43 * \htmlonly<blockquote>\endhtmlonly 44 * <pre> 45 * \code 46 * newLanguage 47 * 48 * newLanguage + newCountry 49 * 50 * newLanguage + newCountry + newVariant 51 * \endcode 52 * </pre> 53 * \htmlonly</blockquote>\endhtmlonly 54 * The first option is a valid <STRONG>ISO 55 * Language Code.</STRONG> These codes are the lower-case two-letter 56 * codes as defined by ISO-639. 57 * You can find a full list of these codes at a number of sites, such as: 58 * <BR><a href ="http://www.ics.uci.edu/pub/ietf/http/related/iso639.txt"> 59 * http://www.ics.uci.edu/pub/ietf/http/related/iso639.txt</a> 60 * 61 * <P> 62 * The second option includes an additonal <STRONG>ISO Country 63 * Code.</STRONG> These codes are the upper-case two-letter codes 64 * as defined by ISO-3166. 65 * You can find a full list of these codes at a number of sites, such as: 66 * <BR><a href="http://www.chemie.fu-berlin.de/diverse/doc/ISO_3166.html"> 67 * http://www.chemie.fu-berlin.de/diverse/doc/ISO_3166.html</a> 68 * 69 * <P> 70 * The third option requires another additonal information--the 71 * <STRONG>Variant.</STRONG> 72 * The Variant codes are vendor and browser-specific. 73 * For example, use WIN for Windows, MAC for Macintosh, and POSIX for POSIX. 74 * Where there are two variants, separate them with an underscore, and 75 * put the most important one first. For 76 * example, a Traditional Spanish collation might be referenced, with 77 * "ES", "ES", "Traditional_WIN". 78 * 79 * <P> 80 * Because a <code>Locale</code> is just an identifier for a region, 81 * no validity check is performed when you specify a <code>Locale</code>. 82 * If you want to see whether particular resources are available for the 83 * <code>Locale</code> you asked for, you must query those resources. For 84 * example, ask the <code>UNumberFormat</code> for the locales it supports 85 * using its <code>getAvailable</code> method. 86 * <BR><STRONG>Note:</STRONG> When you ask for a resource for a particular 87 * locale, you get back the best available match, not necessarily 88 * precisely what you asked for. For more information, look at 89 * <code>UResourceBundle</code>. 90 * 91 * <P> 92 * The <code>Locale</code> provides a number of convenient constants 93 * that you can use to specify the commonly used 94 * locales. For example, the following refers to a locale 95 * for the United States: 96 * \htmlonly<blockquote>\endhtmlonly 97 * <pre> 98 * \code 99 * ULOC_US 100 * \endcode 101 * </pre> 102 * \htmlonly</blockquote>\endhtmlonly 103 * 104 * <P> 105 * Once you've specified a locale you can query it for information about 106 * itself. Use <code>uloc_getCountry</code> to get the ISO Country Code and 107 * <code>uloc_getLanguage</code> to get the ISO Language Code. You can 108 * use <code>uloc_getDisplayCountry</code> to get the 109 * name of the country suitable for displaying to the user. Similarly, 110 * you can use <code>uloc_getDisplayLanguage</code> to get the name of 111 * the language suitable for displaying to the user. Interestingly, 112 * the <code>uloc_getDisplayXXX</code> methods are themselves locale-sensitive 113 * and have two versions: one that uses the default locale and one 114 * that takes a locale as an argument and displays the name or country in 115 * a language appropriate to that locale. 116 * 117 * <P> 118 * The ICU provides a number of services that perform locale-sensitive 119 * operations. For example, the <code>unum_xxx</code> functions format 120 * numbers, currency, or percentages in a locale-sensitive manner. 121 * </P> 122 * \htmlonly<blockquote>\endhtmlonly 123 * <pre> 124 * \code 125 * UErrorCode success = U_ZERO_ERROR; 126 * UNumberFormat *nf; 127 * const char* myLocale = "fr_FR"; 128 * 129 * nf = unum_open( UNUM_DEFAULT, NULL, success ); 130 * unum_close(nf); 131 * nf = unum_open( UNUM_CURRENCY, NULL, success ); 132 * unum_close(nf); 133 * nf = unum_open( UNUM_PERCENT, NULL, success ); 134 * unum_close(nf); 135 * \endcode 136 * </pre> 137 * \htmlonly</blockquote>\endhtmlonly 138 * Each of these methods has two variants; one with an explicit locale 139 * and one without; the latter using the default locale. 140 * \htmlonly<blockquote>\endhtmlonly 141 * <pre> 142 * \code 143 * 144 * nf = unum_open( UNUM_DEFAULT, myLocale, success ); 145 * unum_close(nf); 146 * nf = unum_open( UNUM_CURRENCY, myLocale, success ); 147 * unum_close(nf); 148 * nf = unum_open( UNUM_PERCENT, myLocale, success ); 149 * unum_close(nf); 150 * \endcode 151 * </pre> 152 * \htmlonly</blockquote>\endhtmlonly 153 * A <code>Locale</code> is the mechanism for identifying the kind of services 154 * (<code>UNumberFormat</code>) that you would like to get. The locale is 155 * <STRONG>just</STRONG> a mechanism for identifying these services. 156 * 157 * <P> 158 * Each international serivce that performs locale-sensitive operations 159 * allows you 160 * to get all the available objects of that type. You can sift 161 * through these objects by language, country, or variant, 162 * and use the display names to present a menu to the user. 163 * For example, you can create a menu of all the collation objects 164 * suitable for a given language. Such classes implement these 165 * three class methods: 166 * \htmlonly<blockquote>\endhtmlonly 167 * <pre> 168 * \code 169 * const char* uloc_getAvailable(int32_t index); 170 * int32_t uloc_countAvailable(); 171 * int32_t 172 * uloc_getDisplayName(const char* localeID, 173 * const char* inLocaleID, 174 * UChar* result, 175 * int32_t maxResultSize, 176 * UErrorCode* err); 177 * 178 * \endcode 179 * </pre> 180 * \htmlonly</blockquote>\endhtmlonly 181 * <P> 182 * Concerning POSIX/RFC1766 Locale IDs, 183 * the getLanguage/getCountry/getVariant/getName functions do understand 184 * the POSIX type form of language_COUNTRY.ENCODING\@VARIANT 185 * and if there is not an ICU-stype variant, uloc_getVariant() for example 186 * will return the one listed after the \@at sign. As well, the hyphen 187 * "-" is recognized as a country/variant separator similarly to RFC1766. 188 * So for example, "en-us" will be interpreted as en_US. 189 * As a result, uloc_getName() is far from a no-op, and will have the 190 * effect of converting POSIX/RFC1766 IDs into ICU form, although it does 191 * NOT map any of the actual codes (i.e. russian->ru) in any way. 192 * Applications should call uloc_getName() at the point where a locale ID 193 * is coming from an external source (user entry, OS, web browser) 194 * and pass the resulting string to other ICU functions. For example, 195 * don't use de-de\@EURO as an argument to resourcebundle. 196 * 197 * @see UResourceBundle 198 */ 199 200 /** Useful constant for this language. @stable ICU 2.0 */ 201 #define ULOC_CHINESE "zh" 202 /** Useful constant for this language. @stable ICU 2.0 */ 203 #define ULOC_ENGLISH "en" 204 /** Useful constant for this language. @stable ICU 2.0 */ 205 #define ULOC_FRENCH "fr" 206 /** Useful constant for this language. @stable ICU 2.0 */ 207 #define ULOC_GERMAN "de" 208 /** Useful constant for this language. @stable ICU 2.0 */ 209 #define ULOC_ITALIAN "it" 210 /** Useful constant for this language. @stable ICU 2.0 */ 211 #define ULOC_JAPANESE "ja" 212 /** Useful constant for this language. @stable ICU 2.0 */ 213 #define ULOC_KOREAN "ko" 214 /** Useful constant for this language. @stable ICU 2.0 */ 215 #define ULOC_SIMPLIFIED_CHINESE "zh_CN" 216 /** Useful constant for this language. @stable ICU 2.0 */ 217 #define ULOC_TRADITIONAL_CHINESE "zh_TW" 218 219 /** Useful constant for this country/region. @stable ICU 2.0 */ 220 #define ULOC_CANADA "en_CA" 221 /** Useful constant for this country/region. @stable ICU 2.0 */ 222 #define ULOC_CANADA_FRENCH "fr_CA" 223 /** Useful constant for this country/region. @stable ICU 2.0 */ 224 #define ULOC_CHINA "zh_CN" 225 /** Useful constant for this country/region. @stable ICU 2.0 */ 226 #define ULOC_PRC "zh_CN" 227 /** Useful constant for this country/region. @stable ICU 2.0 */ 228 #define ULOC_FRANCE "fr_FR" 229 /** Useful constant for this country/region. @stable ICU 2.0 */ 230 #define ULOC_GERMANY "de_DE" 231 /** Useful constant for this country/region. @stable ICU 2.0 */ 232 #define ULOC_ITALY "it_IT" 233 /** Useful constant for this country/region. @stable ICU 2.0 */ 234 #define ULOC_JAPAN "ja_JP" 235 /** Useful constant for this country/region. @stable ICU 2.0 */ 236 #define ULOC_KOREA "ko_KR" 237 /** Useful constant for this country/region. @stable ICU 2.0 */ 238 #define ULOC_TAIWAN "zh_TW" 239 /** Useful constant for this country/region. @stable ICU 2.0 */ 240 #define ULOC_UK "en_GB" 241 /** Useful constant for this country/region. @stable ICU 2.0 */ 242 #define ULOC_US "en_US" 243 244 /** 245 * Useful constant for the maximum size of the language part of a locale ID. 246 * (including the terminating NULL). 247 * @stable ICU 2.0 248 */ 249 #define ULOC_LANG_CAPACITY 12 250 251 /** 252 * Useful constant for the maximum size of the country part of a locale ID 253 * (including the terminating NULL). 254 * @stable ICU 2.0 255 */ 256 #define ULOC_COUNTRY_CAPACITY 4 257 /** 258 * Useful constant for the maximum size of the whole locale ID 259 * (including the terminating NULL and all keywords). 260 * @stable ICU 2.0 261 */ 262 #define ULOC_FULLNAME_CAPACITY 157 263 264 /** 265 * Useful constant for the maximum size of the script part of a locale ID 266 * (including the terminating NULL). 267 * @stable ICU 2.8 268 */ 269 #define ULOC_SCRIPT_CAPACITY 6 270 271 /** 272 * Useful constant for the maximum size of keywords in a locale 273 * @stable ICU 2.8 274 */ 275 #define ULOC_KEYWORDS_CAPACITY 50 276 277 /** 278 * Useful constant for the maximum total size of keywords and their values in a locale 279 * @stable ICU 2.8 280 */ 281 #define ULOC_KEYWORD_AND_VALUES_CAPACITY 100 282 283 /** 284 * Invariant character separating keywords from the locale string 285 * @stable ICU 2.8 286 */ 287 #define ULOC_KEYWORD_SEPARATOR '@' 288 289 /** 290 * Unicode code point for '@' separating keywords from the locale string. 291 * @see ULOC_KEYWORD_SEPARATOR 292 * @draft ICU 4.6 293 */ 294 #define ULOC_KEYWORD_SEPARATOR_UNICODE 0x40 295 296 /** 297 * Invariant character for assigning value to a keyword 298 * @stable ICU 2.8 299 */ 300 #define ULOC_KEYWORD_ASSIGN '=' 301 302 /** 303 * Unicode code point for '=' for assigning value to a keyword. 304 * @see ULOC_KEYWORD_ASSIGN 305 * @draft ICU 4.6 306 */ 307 #define ULOC_KEYWORD_ASSIGN_UNICODE 0x3D 308 309 /** 310 * Invariant character separating keywords 311 * @stable ICU 2.8 312 */ 313 #define ULOC_KEYWORD_ITEM_SEPARATOR ';' 314 315 /** 316 * Unicode code point for ';' separating keywords 317 * @see ULOC_KEYWORD_ITEM_SEPARATOR 318 * @draft ICU 4.6 319 */ 320 #define ULOC_KEYWORD_ITEM_SEPARATOR_UNICODE 0x3B 321 322 /** 323 * Constants for *_getLocale() 324 * Allow user to select whether she wants information on 325 * requested, valid or actual locale. 326 * For example, a collator for "en_US_CALIFORNIA" was 327 * requested. In the current state of ICU (2.0), 328 * the requested locale is "en_US_CALIFORNIA", 329 * the valid locale is "en_US" (most specific locale supported by ICU) 330 * and the actual locale is "root" (the collation data comes unmodified 331 * from the UCA) 332 * The locale is considered supported by ICU if there is a core ICU bundle 333 * for that locale (although it may be empty). 334 * @stable ICU 2.1 335 */ 336 typedef enum { 337 /** This is locale the data actually comes from 338 * @stable ICU 2.1 339 */ 340 ULOC_ACTUAL_LOCALE = 0, 341 /** This is the most specific locale supported by ICU 342 * @stable ICU 2.1 343 */ 344 ULOC_VALID_LOCALE = 1, 345 346 #ifndef U_HIDE_DEPRECATED_API 347 /** This is the requested locale 348 * @deprecated ICU 2.8 349 */ 350 ULOC_REQUESTED_LOCALE = 2, 351 #endif /* U_HIDE_DEPRECATED_API */ 352 353 ULOC_DATA_LOCALE_TYPE_LIMIT = 3 354 } ULocDataLocaleType ; 355 356 357 /** 358 * Gets ICU's default locale. 359 * The returned string is a snapshot in time, and will remain valid 360 * and unchanged even when uloc_setDefault() is called. 361 * The returned storage is owned by ICU, and must not be altered or deleted 362 * by the caller. 363 * 364 * @return the ICU default locale 365 * @system 366 * @stable ICU 2.0 367 */ 368 U_STABLE const char* U_EXPORT2 369 uloc_getDefault(void); 370 371 /** 372 * Sets ICU's default locale. 373 * By default (without calling this function), ICU's default locale will be based 374 * on information obtained from the underlying system environment. 375 * <p> 376 * Changes to ICU's default locale do not propagate back to the 377 * system environment. 378 * <p> 379 * Changes to ICU's default locale to not affect any ICU services that 380 * may already be open based on the previous default locale value. 381 * 382 * @param localeID the new ICU default locale. A value of NULL will try to get 383 * the system's default locale. 384 * @param status the error information if the setting of default locale fails 385 * @system 386 * @stable ICU 2.0 387 */ 388 U_STABLE void U_EXPORT2 389 uloc_setDefault(const char* localeID, 390 UErrorCode* status); 391 392 /** 393 * Gets the language code for the specified locale. 394 * 395 * @param localeID the locale to get the ISO language code with 396 * @param language the language code for localeID 397 * @param languageCapacity the size of the language buffer to store the 398 * language code with 399 * @param err error information if retrieving the language code failed 400 * @return the actual buffer size needed for the language code. If it's greater 401 * than languageCapacity, the returned language code will be truncated. 402 * @stable ICU 2.0 403 */ 404 U_STABLE int32_t U_EXPORT2 405 uloc_getLanguage(const char* localeID, 406 char* language, 407 int32_t languageCapacity, 408 UErrorCode* err); 409 410 /** 411 * Gets the script code for the specified locale. 412 * 413 * @param localeID the locale to get the ISO language code with 414 * @param script the language code for localeID 415 * @param scriptCapacity the size of the language buffer to store the 416 * language code with 417 * @param err error information if retrieving the language code failed 418 * @return the actual buffer size needed for the language code. If it's greater 419 * than scriptCapacity, the returned language code will be truncated. 420 * @stable ICU 2.8 421 */ 422 U_STABLE int32_t U_EXPORT2 423 uloc_getScript(const char* localeID, 424 char* script, 425 int32_t scriptCapacity, 426 UErrorCode* err); 427 428 /** 429 * Gets the country code for the specified locale. 430 * 431 * @param localeID the locale to get the country code with 432 * @param country the country code for localeID 433 * @param countryCapacity the size of the country buffer to store the 434 * country code with 435 * @param err error information if retrieving the country code failed 436 * @return the actual buffer size needed for the country code. If it's greater 437 * than countryCapacity, the returned country code will be truncated. 438 * @stable ICU 2.0 439 */ 440 U_STABLE int32_t U_EXPORT2 441 uloc_getCountry(const char* localeID, 442 char* country, 443 int32_t countryCapacity, 444 UErrorCode* err); 445 446 /** 447 * Gets the variant code for the specified locale. 448 * 449 * @param localeID the locale to get the variant code with 450 * @param variant the variant code for localeID 451 * @param variantCapacity the size of the variant buffer to store the 452 * variant code with 453 * @param err error information if retrieving the variant code failed 454 * @return the actual buffer size needed for the variant code. If it's greater 455 * than variantCapacity, the returned variant code will be truncated. 456 * @stable ICU 2.0 457 */ 458 U_STABLE int32_t U_EXPORT2 459 uloc_getVariant(const char* localeID, 460 char* variant, 461 int32_t variantCapacity, 462 UErrorCode* err); 463 464 465 /** 466 * Gets the full name for the specified locale. 467 * Note: This has the effect of 'canonicalizing' the ICU locale ID to 468 * a certain extent. Upper and lower case are set as needed. 469 * It does NOT map aliased names in any way. 470 * See the top of this header file. 471 * This API supports preflighting. 472 * 473 * @param localeID the locale to get the full name with 474 * @param name fill in buffer for the name without keywords. 475 * @param nameCapacity capacity of the fill in buffer. 476 * @param err error information if retrieving the full name failed 477 * @return the actual buffer size needed for the full name. If it's greater 478 * than nameCapacity, the returned full name will be truncated. 479 * @stable ICU 2.0 480 */ 481 U_STABLE int32_t U_EXPORT2 482 uloc_getName(const char* localeID, 483 char* name, 484 int32_t nameCapacity, 485 UErrorCode* err); 486 487 /** 488 * Gets the full name for the specified locale. 489 * Note: This has the effect of 'canonicalizing' the string to 490 * a certain extent. Upper and lower case are set as needed, 491 * and if the components were in 'POSIX' format they are changed to 492 * ICU format. It does NOT map aliased names in any way. 493 * See the top of this header file. 494 * 495 * @param localeID the locale to get the full name with 496 * @param name the full name for localeID 497 * @param nameCapacity the size of the name buffer to store the 498 * full name with 499 * @param err error information if retrieving the full name failed 500 * @return the actual buffer size needed for the full name. If it's greater 501 * than nameCapacity, the returned full name will be truncated. 502 * @stable ICU 2.8 503 */ 504 U_STABLE int32_t U_EXPORT2 505 uloc_canonicalize(const char* localeID, 506 char* name, 507 int32_t nameCapacity, 508 UErrorCode* err); 509 510 /** 511 * Gets the ISO language code for the specified locale. 512 * 513 * @param localeID the locale to get the ISO language code with 514 * @return language the ISO language code for localeID 515 * @stable ICU 2.0 516 */ 517 U_STABLE const char* U_EXPORT2 518 uloc_getISO3Language(const char* localeID); 519 520 521 /** 522 * Gets the ISO country code for the specified locale. 523 * 524 * @param localeID the locale to get the ISO country code with 525 * @return country the ISO country code for localeID 526 * @stable ICU 2.0 527 */ 528 U_STABLE const char* U_EXPORT2 529 uloc_getISO3Country(const char* localeID); 530 531 /** 532 * Gets the Win32 LCID value for the specified locale. 533 * If the ICU locale is not recognized by Windows, 0 will be returned. 534 * 535 * @param localeID the locale to get the Win32 LCID value with 536 * @return country the Win32 LCID for localeID 537 * @stable ICU 2.0 538 */ 539 U_STABLE uint32_t U_EXPORT2 540 uloc_getLCID(const char* localeID); 541 542 /** 543 * Gets the language name suitable for display for the specified locale. 544 * 545 * @param locale the locale to get the ISO language code with 546 * @param displayLocale Specifies the locale to be used to display the name. In other words, 547 * if the locale's language code is "en", passing Locale::getFrench() for 548 * inLocale would result in "Anglais", while passing Locale::getGerman() 549 * for inLocale would result in "Englisch". 550 * @param language the displayable language code for localeID 551 * @param languageCapacity the size of the language buffer to store the 552 * displayable language code with 553 * @param status error information if retrieving the displayable language code failed 554 * @return the actual buffer size needed for the displayable language code. If it's greater 555 * than languageCapacity, the returned language code will be truncated. 556 * @stable ICU 2.0 557 */ 558 U_STABLE int32_t U_EXPORT2 559 uloc_getDisplayLanguage(const char* locale, 560 const char* displayLocale, 561 UChar* language, 562 int32_t languageCapacity, 563 UErrorCode* status); 564 565 /** 566 * Gets the script name suitable for display for the specified locale. 567 * 568 * @param locale the locale to get the displayable script code with. NULL may be used to specify the default. 569 * @param displayLocale Specifies the locale to be used to display the name. In other words, 570 * if the locale's language code is "en", passing Locale::getFrench() for 571 * inLocale would result in "", while passing Locale::getGerman() 572 * for inLocale would result in "". NULL may be used to specify the default. 573 * @param script the displayable country code for localeID 574 * @param scriptCapacity the size of the script buffer to store the 575 * displayable script code with 576 * @param status error information if retrieving the displayable script code failed 577 * @return the actual buffer size needed for the displayable script code. If it's greater 578 * than scriptCapacity, the returned displayable script code will be truncated. 579 * @stable ICU 2.8 580 */ 581 U_STABLE int32_t U_EXPORT2 582 uloc_getDisplayScript(const char* locale, 583 const char* displayLocale, 584 UChar* script, 585 int32_t scriptCapacity, 586 UErrorCode* status); 587 588 /** 589 * Gets the country name suitable for display for the specified locale. 590 * 591 * @param locale the locale to get the displayable country code with. NULL may be used to specify the default. 592 * @param displayLocale Specifies the locale to be used to display the name. In other words, 593 * if the locale's language code is "en", passing Locale::getFrench() for 594 * inLocale would result in "Anglais", while passing Locale::getGerman() 595 * for inLocale would result in "Englisch". NULL may be used to specify the default. 596 * @param country the displayable country code for localeID 597 * @param countryCapacity the size of the country buffer to store the 598 * displayable country code with 599 * @param status error information if retrieving the displayable country code failed 600 * @return the actual buffer size needed for the displayable country code. If it's greater 601 * than countryCapacity, the returned displayable country code will be truncated. 602 * @stable ICU 2.0 603 */ 604 U_STABLE int32_t U_EXPORT2 605 uloc_getDisplayCountry(const char* locale, 606 const char* displayLocale, 607 UChar* country, 608 int32_t countryCapacity, 609 UErrorCode* status); 610 611 612 /** 613 * Gets the variant name suitable for display for the specified locale. 614 * 615 * @param locale the locale to get the displayable variant code with. NULL may be used to specify the default. 616 * @param displayLocale Specifies the locale to be used to display the name. In other words, 617 * if the locale's language code is "en", passing Locale::getFrench() for 618 * inLocale would result in "Anglais", while passing Locale::getGerman() 619 * for inLocale would result in "Englisch". NULL may be used to specify the default. 620 * @param variant the displayable variant code for localeID 621 * @param variantCapacity the size of the variant buffer to store the 622 * displayable variant code with 623 * @param status error information if retrieving the displayable variant code failed 624 * @return the actual buffer size needed for the displayable variant code. If it's greater 625 * than variantCapacity, the returned displayable variant code will be truncated. 626 * @stable ICU 2.0 627 */ 628 U_STABLE int32_t U_EXPORT2 629 uloc_getDisplayVariant(const char* locale, 630 const char* displayLocale, 631 UChar* variant, 632 int32_t variantCapacity, 633 UErrorCode* status); 634 635 /** 636 * Gets the keyword name suitable for display for the specified locale. 637 * E.g: for the locale string de_DE\@collation=PHONEBOOK, this API gets the display 638 * string for the keyword collation. 639 * Usage: 640 * <code> 641 * UErrorCode status = U_ZERO_ERROR; 642 * const char* keyword =NULL; 643 * int32_t keywordLen = 0; 644 * int32_t keywordCount = 0; 645 * UChar displayKeyword[256]; 646 * int32_t displayKeywordLen = 0; 647 * UEnumeration* keywordEnum = uloc_openKeywords("de_DE@collation=PHONEBOOK;calendar=TRADITIONAL", &status); 648 * for(keywordCount = uenum_count(keywordEnum, &status); keywordCount > 0 ; keywordCount--){ 649 * if(U_FAILURE(status)){ 650 * ...something went wrong so handle the error... 651 * break; 652 * } 653 * // the uenum_next returns NUL terminated string 654 * keyword = uenum_next(keywordEnum, &keywordLen, &status); 655 * displayKeywordLen = uloc_getDisplayKeyword(keyword, "en_US", displayKeyword, 256); 656 * ... do something interesting ..... 657 * } 658 * uenum_close(keywordEnum); 659 * </code> 660 * @param keyword The keyword whose display string needs to be returned. 661 * @param displayLocale Specifies the locale to be used to display the name. In other words, 662 * if the locale's language code is "en", passing Locale::getFrench() for 663 * inLocale would result in "Anglais", while passing Locale::getGerman() 664 * for inLocale would result in "Englisch". NULL may be used to specify the default. 665 * @param dest the buffer to which the displayable keyword should be written. 666 * @param destCapacity The size of the buffer (number of UChars). If it is 0, then 667 * dest may be NULL and the function will only return the length of the 668 * result without writing any of the result string (pre-flighting). 669 * @param status error information if retrieving the displayable string failed. 670 * Should not be NULL and should not indicate failure on entry. 671 * @return the actual buffer size needed for the displayable variant code. 672 * @see #uloc_openKeywords 673 * @stable ICU 2.8 674 */ 675 U_STABLE int32_t U_EXPORT2 676 uloc_getDisplayKeyword(const char* keyword, 677 const char* displayLocale, 678 UChar* dest, 679 int32_t destCapacity, 680 UErrorCode* status); 681 /** 682 * Gets the value of the keyword suitable for display for the specified locale. 683 * E.g: for the locale string de_DE\@collation=PHONEBOOK, this API gets the display 684 * string for PHONEBOOK, in the display locale, when "collation" is specified as the keyword. 685 * 686 * @param locale The locale to get the displayable variant code with. NULL may be used to specify the default. 687 * @param keyword The keyword for whose value should be used. 688 * @param displayLocale Specifies the locale to be used to display the name. In other words, 689 * if the locale's language code is "en", passing Locale::getFrench() for 690 * inLocale would result in "Anglais", while passing Locale::getGerman() 691 * for inLocale would result in "Englisch". NULL may be used to specify the default. 692 * @param dest the buffer to which the displayable keyword should be written. 693 * @param destCapacity The size of the buffer (number of UChars). If it is 0, then 694 * dest may be NULL and the function will only return the length of the 695 * result without writing any of the result string (pre-flighting). 696 * @param status error information if retrieving the displayable string failed. 697 * Should not be NULL and must not indicate failure on entry. 698 * @return the actual buffer size needed for the displayable variant code. 699 * @stable ICU 2.8 700 */ 701 U_STABLE int32_t U_EXPORT2 702 uloc_getDisplayKeywordValue( const char* locale, 703 const char* keyword, 704 const char* displayLocale, 705 UChar* dest, 706 int32_t destCapacity, 707 UErrorCode* status); 708 /** 709 * Gets the full name suitable for display for the specified locale. 710 * 711 * @param localeID the locale to get the displayable name with. NULL may be used to specify the default. 712 * @param inLocaleID Specifies the locale to be used to display the name. In other words, 713 * if the locale's language code is "en", passing Locale::getFrench() for 714 * inLocale would result in "Anglais", while passing Locale::getGerman() 715 * for inLocale would result in "Englisch". NULL may be used to specify the default. 716 * @param result the displayable name for localeID 717 * @param maxResultSize the size of the name buffer to store the 718 * displayable full name with 719 * @param err error information if retrieving the displayable name failed 720 * @return the actual buffer size needed for the displayable name. If it's greater 721 * than maxResultSize, the returned displayable name will be truncated. 722 * @stable ICU 2.0 723 */ 724 U_STABLE int32_t U_EXPORT2 725 uloc_getDisplayName(const char* localeID, 726 const char* inLocaleID, 727 UChar* result, 728 int32_t maxResultSize, 729 UErrorCode* err); 730 731 732 /** 733 * Gets the specified locale from a list of all available locales. 734 * The return value is a pointer to an item of 735 * a locale name array. Both this array and the pointers 736 * it contains are owned by ICU and should not be deleted or written through 737 * by the caller. The locale name is terminated by a null pointer. 738 * @param n the specific locale name index of the available locale list 739 * @return a specified locale name of all available locales 740 * @stable ICU 2.0 741 */ 742 U_STABLE const char* U_EXPORT2 743 uloc_getAvailable(int32_t n); 744 745 /** 746 * Gets the size of the all available locale list. 747 * 748 * @return the size of the locale list 749 * @stable ICU 2.0 750 */ 751 U_STABLE int32_t U_EXPORT2 uloc_countAvailable(void); 752 753 /** 754 * 755 * Gets a list of all available language codes defined in ISO 639. This is a pointer 756 * to an array of pointers to arrays of char. All of these pointers are owned 757 * by ICU-- do not delete them, and do not write through them. The array is 758 * terminated with a null pointer. 759 * @return a list of all available language codes 760 * @stable ICU 2.0 761 */ 762 U_STABLE const char* const* U_EXPORT2 763 uloc_getISOLanguages(void); 764 765 /** 766 * 767 * Gets a list of all available 2-letter country codes defined in ISO 639. This is a 768 * pointer to an array of pointers to arrays of char. All of these pointers are 769 * owned by ICU-- do not delete them, and do not write through them. The array is 770 * terminated with a null pointer. 771 * @return a list of all available country codes 772 * @stable ICU 2.0 773 */ 774 U_STABLE const char* const* U_EXPORT2 775 uloc_getISOCountries(void); 776 777 /** 778 * Truncate the locale ID string to get the parent locale ID. 779 * Copies the part of the string before the last underscore. 780 * The parent locale ID will be an empty string if there is no 781 * underscore, or if there is only one underscore at localeID[0]. 782 * 783 * @param localeID Input locale ID string. 784 * @param parent Output string buffer for the parent locale ID. 785 * @param parentCapacity Size of the output buffer. 786 * @param err A UErrorCode value. 787 * @return The length of the parent locale ID. 788 * @stable ICU 2.0 789 */ 790 U_STABLE int32_t U_EXPORT2 791 uloc_getParent(const char* localeID, 792 char* parent, 793 int32_t parentCapacity, 794 UErrorCode* err); 795 796 797 798 799 /** 800 * Gets the full name for the specified locale. 801 * Note: This has the effect of 'canonicalizing' the string to 802 * a certain extent. Upper and lower case are set as needed, 803 * and if the components were in 'POSIX' format they are changed to 804 * ICU format. It does NOT map aliased names in any way. 805 * See the top of this header file. 806 * This API strips off the keyword part, so "de_DE\@collation=phonebook" 807 * will become "de_DE". 808 * This API supports preflighting. 809 * 810 * @param localeID the locale to get the full name with 811 * @param name fill in buffer for the name without keywords. 812 * @param nameCapacity capacity of the fill in buffer. 813 * @param err error information if retrieving the full name failed 814 * @return the actual buffer size needed for the full name. If it's greater 815 * than nameCapacity, the returned full name will be truncated. 816 * @stable ICU 2.8 817 */ 818 U_STABLE int32_t U_EXPORT2 819 uloc_getBaseName(const char* localeID, 820 char* name, 821 int32_t nameCapacity, 822 UErrorCode* err); 823 824 /** 825 * Gets an enumeration of keywords for the specified locale. Enumeration 826 * must get disposed of by the client using uenum_close function. 827 * 828 * @param localeID the locale to get the variant code with 829 * @param status error information if retrieving the keywords failed 830 * @return enumeration of keywords or NULL if there are no keywords. 831 * @stable ICU 2.8 832 */ 833 U_STABLE UEnumeration* U_EXPORT2 834 uloc_openKeywords(const char* localeID, 835 UErrorCode* status); 836 837 /** 838 * Get the value for a keyword. Locale name does not need to be normalized. 839 * 840 * @param localeID locale name containing the keyword ("de_DE@currency=EURO;collation=PHONEBOOK") 841 * @param keywordName name of the keyword for which we want the value. Case insensitive. 842 * @param buffer receiving buffer 843 * @param bufferCapacity capacity of receiving buffer 844 * @param status containing error code - buffer not big enough. 845 * @return the length of keyword value 846 * @stable ICU 2.8 847 */ 848 U_STABLE int32_t U_EXPORT2 849 uloc_getKeywordValue(const char* localeID, 850 const char* keywordName, 851 char* buffer, int32_t bufferCapacity, 852 UErrorCode* status); 853 854 855 /** 856 * Set the value of the specified keyword. 857 * NOTE: Unlike almost every other ICU function which takes a 858 * buffer, this function will NOT truncate the output text. If a 859 * BUFFER_OVERFLOW_ERROR is received, it means that the original 860 * buffer is untouched. This is done to prevent incorrect or possibly 861 * even malformed locales from being generated and used. 862 * 863 * @param keywordName name of the keyword to be set. Case insensitive. 864 * @param keywordValue value of the keyword to be set. If 0-length or 865 * NULL, will result in the keyword being removed. No error is given if 866 * that keyword does not exist. 867 * @param buffer input buffer containing locale to be modified. 868 * @param bufferCapacity capacity of receiving buffer 869 * @param status containing error code - buffer not big enough. 870 * @return the length needed for the buffer 871 * @see uloc_getKeywordValue 872 * @stable ICU 3.2 873 */ 874 U_STABLE int32_t U_EXPORT2 875 uloc_setKeywordValue(const char* keywordName, 876 const char* keywordValue, 877 char* buffer, int32_t bufferCapacity, 878 UErrorCode* status); 879 880 /** 881 * enums for the return value for the character and line orientation 882 * functions. 883 * @stable ICU 4.0 884 */ 885 typedef enum { 886 ULOC_LAYOUT_LTR = 0, /* left-to-right. */ 887 ULOC_LAYOUT_RTL = 1, /* right-to-left. */ 888 ULOC_LAYOUT_TTB = 2, /* top-to-bottom. */ 889 ULOC_LAYOUT_BTT = 3, /* bottom-to-top. */ 890 ULOC_LAYOUT_UNKNOWN 891 } ULayoutType; 892 893 /** 894 * Get the layout character orientation for the specified locale. 895 * 896 * @param localeId locale name 897 * @param status Error status 898 * @return an enum indicating the layout orientation for characters. 899 * @stable ICU 4.0 900 */ 901 U_STABLE ULayoutType U_EXPORT2 902 uloc_getCharacterOrientation(const char* localeId, 903 UErrorCode *status); 904 905 /** 906 * Get the layout line orientation for the specified locale. 907 * 908 * @param localeId locale name 909 * @param status Error status 910 * @return an enum indicating the layout orientation for lines. 911 * @stable ICU 4.0 912 */ 913 U_STABLE ULayoutType U_EXPORT2 914 uloc_getLineOrientation(const char* localeId, 915 UErrorCode *status); 916 917 /** 918 * enums for the 'outResult' parameter return value 919 * @see uloc_acceptLanguageFromHTTP 920 * @see uloc_acceptLanguage 921 * @stable ICU 3.2 922 */ 923 typedef enum { 924 ULOC_ACCEPT_FAILED = 0, /* No exact match was found. */ 925 ULOC_ACCEPT_VALID = 1, /* An exact match was found. */ 926 ULOC_ACCEPT_FALLBACK = 2 /* A fallback was found, for example, 927 Accept list contained 'ja_JP' 928 which matched available locale 'ja'. */ 929 } UAcceptResult; 930 931 932 /** 933 * Based on a HTTP header from a web browser and a list of available locales, 934 * determine an acceptable locale for the user. 935 * @param result - buffer to accept the result locale 936 * @param resultAvailable the size of the result buffer. 937 * @param outResult - An out parameter that contains the fallback status 938 * @param httpAcceptLanguage - "Accept-Language:" header as per HTTP. 939 * @param availableLocales - list of available locales to match 940 * @param status Error status, may be BUFFER_OVERFLOW_ERROR 941 * @return length needed for the locale. 942 * @stable ICU 3.2 943 */ 944 U_STABLE int32_t U_EXPORT2 945 uloc_acceptLanguageFromHTTP(char *result, int32_t resultAvailable, 946 UAcceptResult *outResult, 947 const char *httpAcceptLanguage, 948 UEnumeration* availableLocales, 949 UErrorCode *status); 950 951 /** 952 * Based on a list of available locales, 953 * determine an acceptable locale for the user. 954 * @param result - buffer to accept the result locale 955 * @param resultAvailable the size of the result buffer. 956 * @param outResult - An out parameter that contains the fallback status 957 * @param acceptList - list of acceptable languages 958 * @param acceptListCount - count of acceptList items 959 * @param availableLocales - list of available locales to match 960 * @param status Error status, may be BUFFER_OVERFLOW_ERROR 961 * @return length needed for the locale. 962 * @stable ICU 3.2 963 */ 964 U_STABLE int32_t U_EXPORT2 965 uloc_acceptLanguage(char *result, int32_t resultAvailable, 966 UAcceptResult *outResult, const char **acceptList, 967 int32_t acceptListCount, 968 UEnumeration* availableLocales, 969 UErrorCode *status); 970 971 972 /** 973 * Gets the ICU locale ID for the specified Win32 LCID value. 974 * 975 * @param hostID the Win32 LCID to translate 976 * @param locale the output buffer for the ICU locale ID, which will be NUL-terminated 977 * if there is room. 978 * @param localeCapacity the size of the output buffer 979 * @param status an error is returned if the LCID is unrecognized or the output buffer 980 * is too small 981 * @return actual the actual size of the locale ID, not including NUL-termination 982 * @stable ICU 3.8 983 */ 984 U_STABLE int32_t U_EXPORT2 985 uloc_getLocaleForLCID(uint32_t hostID, char *locale, int32_t localeCapacity, 986 UErrorCode *status); 987 988 989 /** 990 * Add the likely subtags for a provided locale ID, per the algorithm described 991 * in the following CLDR technical report: 992 * 993 * http://www.unicode.org/reports/tr35/#Likely_Subtags 994 * 995 * If localeID is already in the maximal form, or there is no data available 996 * for maximization, it will be copied to the output buffer. For example, 997 * "und-Zzzz" cannot be maximized, since there is no reasonable maximization. 998 * 999 * Examples: 1000 * 1001 * "en" maximizes to "en_Latn_US" 1002 * 1003 * "de" maximizes to "de_Latn_US" 1004 * 1005 * "sr" maximizes to "sr_Cyrl_RS" 1006 * 1007 * "sh" maximizes to "sr_Latn_RS" (Note this will not reverse.) 1008 * 1009 * "zh_Hani" maximizes to "zh_Hans_CN" (Note this will not reverse.) 1010 * 1011 * @param localeID The locale to maximize 1012 * @param maximizedLocaleID The maximized locale 1013 * @param maximizedLocaleIDCapacity The capacity of the maximizedLocaleID buffer 1014 * @param err Error information if maximizing the locale failed. If the length 1015 * of the localeID and the null-terminator is greater than the maximum allowed size, 1016 * or the localeId is not well-formed, the error code is U_ILLEGAL_ARGUMENT_ERROR. 1017 * @return The actual buffer size needed for the maximized locale. If it's 1018 * greater than maximizedLocaleIDCapacity, the returned ID will be truncated. 1019 * On error, the return value is -1. 1020 * @stable ICU 4.0 1021 */ 1022 U_STABLE int32_t U_EXPORT2 1023 uloc_addLikelySubtags(const char* localeID, 1024 char* maximizedLocaleID, 1025 int32_t maximizedLocaleIDCapacity, 1026 UErrorCode* err); 1027 1028 1029 /** 1030 * Minimize the subtags for a provided locale ID, per the algorithm described 1031 * in the following CLDR technical report: 1032 * 1033 * http://www.unicode.org/reports/tr35/#Likely_Subtags 1034 * 1035 * If localeID is already in the minimal form, or there is no data available 1036 * for minimization, it will be copied to the output buffer. Since the 1037 * minimization algorithm relies on proper maximization, see the comments 1038 * for uloc_addLikelySubtags for reasons why there might not be any data. 1039 * 1040 * Examples: 1041 * 1042 * "en_Latn_US" minimizes to "en" 1043 * 1044 * "de_Latn_US" minimizes to "de" 1045 * 1046 * "sr_Cyrl_RS" minimizes to "sr" 1047 * 1048 * "zh_Hant_TW" minimizes to "zh_TW" (The region is preferred to the 1049 * script, and minimizing to "zh" would imply "zh_Hans_CN".) 1050 * 1051 * @param localeID The locale to minimize 1052 * @param minimizedLocaleID The minimized locale 1053 * @param minimizedLocaleIDCapacity The capacity of the minimizedLocaleID buffer 1054 * @param err Error information if minimizing the locale failed. If the length 1055 * of the localeID and the null-terminator is greater than the maximum allowed size, 1056 * or the localeId is not well-formed, the error code is U_ILLEGAL_ARGUMENT_ERROR. 1057 * @return The actual buffer size needed for the minimized locale. If it's 1058 * greater than minimizedLocaleIDCapacity, the returned ID will be truncated. 1059 * On error, the return value is -1. 1060 * @stable ICU 4.0 1061 */ 1062 U_STABLE int32_t U_EXPORT2 1063 uloc_minimizeSubtags(const char* localeID, 1064 char* minimizedLocaleID, 1065 int32_t minimizedLocaleIDCapacity, 1066 UErrorCode* err); 1067 1068 /** 1069 * Returns a locale ID for the specified BCP47 language tag string. 1070 * If the specified language tag contains any ill-formed subtags, 1071 * the first such subtag and all following subtags are ignored. 1072 * <p> 1073 * This implements the 'Language-Tag' production of BCP47, and so 1074 * supports grandfathered (regular and irregular) as well as private 1075 * use language tags. Private use tags are represented as 'x-whatever', 1076 * and grandfathered tags are converted to their canonical replacements 1077 * where they exist. Note that a few grandfathered tags have no modern 1078 * replacement, these will be converted using the fallback described in 1079 * the first paragraph, so some information might be lost. 1080 * @param langtag the input BCP47 language tag. 1081 * @param localeID the output buffer receiving a locale ID for the 1082 * specified BCP47 language tag. 1083 * @param localeIDCapacity the size of the locale ID output buffer. 1084 * @param parsedLength if not NULL, succsessfully parsed length 1085 * for the input language tag is set. 1086 * @param err error information if receiving the locald ID 1087 * failed. 1088 * @return the length of the locale ID. 1089 * @draft ICU 4.2 1090 */ 1091 U_DRAFT int32_t U_EXPORT2 1092 uloc_forLanguageTag(const char* langtag, 1093 char* localeID, 1094 int32_t localeIDCapacity, 1095 int32_t* parsedLength, 1096 UErrorCode* err); 1097 1098 /** 1099 * Returns a well-formed language tag for this locale ID. 1100 * <p> 1101 * <b>Note</b>: When <code>strict</code> is FALSE, any locale 1102 * fields which do not satisfy the BCP47 syntax requirement will 1103 * be omitted from the result. When <code>strict</code> is 1104 * TRUE, this function sets U_ILLEGAL_ARGUMENT_ERROR to the 1105 * <code>err</code> if any locale fields do not satisfy the 1106 * BCP47 syntax requirement. 1107 * @param localeID the input lcoale ID 1108 * @param langtag the output buffer receiving BCP47 language 1109 * tag for the locale ID. 1110 * @param langtagCapacity the size of the BCP47 language tag 1111 * output buffer. 1112 * @param strict boolean value indicating if the function returns 1113 * an error for an ill-formed input locale ID. 1114 * @param err error information if receiving the language 1115 * tag failed. 1116 * @return The length of the BCP47 language tag. 1117 * @draft ICU 4.2 1118 */ 1119 U_DRAFT int32_t U_EXPORT2 1120 uloc_toLanguageTag(const char* localeID, 1121 char* langtag, 1122 int32_t langtagCapacity, 1123 UBool strict, 1124 UErrorCode* err); 1125 1126 #endif /*_ULOC*/ 1127