1 /* 2 ********************************************************************** 3 * Copyright (C) 1997-2012, 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 * @stable 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 * @stable 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 * @stable 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 #ifndef U_HIDE_SYSTEM_API 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 #endif /* U_HIDE_SYSTEM_API */ 392 393 /** 394 * Gets the language code for the specified locale. 395 * 396 * @param localeID the locale to get the ISO language code with 397 * @param language the language code for localeID 398 * @param languageCapacity the size of the language buffer to store the 399 * language code with 400 * @param err error information if retrieving the language code failed 401 * @return the actual buffer size needed for the language code. If it's greater 402 * than languageCapacity, the returned language code will be truncated. 403 * @stable ICU 2.0 404 */ 405 U_STABLE int32_t U_EXPORT2 406 uloc_getLanguage(const char* localeID, 407 char* language, 408 int32_t languageCapacity, 409 UErrorCode* err); 410 411 /** 412 * Gets the script code for the specified locale. 413 * 414 * @param localeID the locale to get the ISO language code with 415 * @param script the language code for localeID 416 * @param scriptCapacity the size of the language buffer to store the 417 * language code with 418 * @param err error information if retrieving the language code failed 419 * @return the actual buffer size needed for the language code. If it's greater 420 * than scriptCapacity, the returned language code will be truncated. 421 * @stable ICU 2.8 422 */ 423 U_STABLE int32_t U_EXPORT2 424 uloc_getScript(const char* localeID, 425 char* script, 426 int32_t scriptCapacity, 427 UErrorCode* err); 428 429 /** 430 * Gets the country code for the specified locale. 431 * 432 * @param localeID the locale to get the country code with 433 * @param country the country code for localeID 434 * @param countryCapacity the size of the country buffer to store the 435 * country code with 436 * @param err error information if retrieving the country code failed 437 * @return the actual buffer size needed for the country code. If it's greater 438 * than countryCapacity, the returned country code will be truncated. 439 * @stable ICU 2.0 440 */ 441 U_STABLE int32_t U_EXPORT2 442 uloc_getCountry(const char* localeID, 443 char* country, 444 int32_t countryCapacity, 445 UErrorCode* err); 446 447 /** 448 * Gets the variant code for the specified locale. 449 * 450 * @param localeID the locale to get the variant code with 451 * @param variant the variant code for localeID 452 * @param variantCapacity the size of the variant buffer to store the 453 * variant code with 454 * @param err error information if retrieving the variant code failed 455 * @return the actual buffer size needed for the variant code. If it's greater 456 * than variantCapacity, the returned variant code will be truncated. 457 * @stable ICU 2.0 458 */ 459 U_STABLE int32_t U_EXPORT2 460 uloc_getVariant(const char* localeID, 461 char* variant, 462 int32_t variantCapacity, 463 UErrorCode* err); 464 465 466 /** 467 * Gets the full name for the specified locale. 468 * Note: This has the effect of 'canonicalizing' the ICU locale ID to 469 * a certain extent. Upper and lower case are set as needed. 470 * It does NOT map aliased names in any way. 471 * See the top of this header file. 472 * This API supports preflighting. 473 * 474 * @param localeID the locale to get the full name with 475 * @param name fill in buffer for the name without keywords. 476 * @param nameCapacity capacity of the fill in buffer. 477 * @param err error information if retrieving the full name failed 478 * @return the actual buffer size needed for the full name. If it's greater 479 * than nameCapacity, the returned full name will be truncated. 480 * @stable ICU 2.0 481 */ 482 U_STABLE int32_t U_EXPORT2 483 uloc_getName(const char* localeID, 484 char* name, 485 int32_t nameCapacity, 486 UErrorCode* err); 487 488 /** 489 * Gets the full name for the specified locale. 490 * Note: This has the effect of 'canonicalizing' the string to 491 * a certain extent. Upper and lower case are set as needed, 492 * and if the components were in 'POSIX' format they are changed to 493 * ICU format. It does NOT map aliased names in any way. 494 * See the top of this header file. 495 * 496 * @param localeID the locale to get the full name with 497 * @param name the full name for localeID 498 * @param nameCapacity the size of the name buffer to store the 499 * full name with 500 * @param err error information if retrieving the full name failed 501 * @return the actual buffer size needed for the full name. If it's greater 502 * than nameCapacity, the returned full name will be truncated. 503 * @stable ICU 2.8 504 */ 505 U_STABLE int32_t U_EXPORT2 506 uloc_canonicalize(const char* localeID, 507 char* name, 508 int32_t nameCapacity, 509 UErrorCode* err); 510 511 /** 512 * Gets the ISO language code for the specified locale. 513 * 514 * @param localeID the locale to get the ISO language code with 515 * @return language the ISO language code for localeID 516 * @stable ICU 2.0 517 */ 518 U_STABLE const char* U_EXPORT2 519 uloc_getISO3Language(const char* localeID); 520 521 522 /** 523 * Gets the ISO country code for the specified locale. 524 * 525 * @param localeID the locale to get the ISO country code with 526 * @return country the ISO country code for localeID 527 * @stable ICU 2.0 528 */ 529 U_STABLE const char* U_EXPORT2 530 uloc_getISO3Country(const char* localeID); 531 532 /** 533 * Gets the Win32 LCID value for the specified locale. 534 * If the ICU locale is not recognized by Windows, 0 will be returned. 535 * 536 * @param localeID the locale to get the Win32 LCID value with 537 * @return country the Win32 LCID for localeID 538 * @stable ICU 2.0 539 */ 540 U_STABLE uint32_t U_EXPORT2 541 uloc_getLCID(const char* localeID); 542 543 /** 544 * Gets the language name suitable for display for the specified locale. 545 * 546 * @param locale the locale to get the ISO language code with 547 * @param displayLocale Specifies the locale to be used to display the name. In other words, 548 * if the locale's language code is "en", passing Locale::getFrench() for 549 * inLocale would result in "Anglais", while passing Locale::getGerman() 550 * for inLocale would result in "Englisch". 551 * @param language the displayable language code for localeID 552 * @param languageCapacity the size of the language buffer to store the 553 * displayable language code with 554 * @param status error information if retrieving the displayable language code failed 555 * @return the actual buffer size needed for the displayable language code. If it's greater 556 * than languageCapacity, the returned language code will be truncated. 557 * @stable ICU 2.0 558 */ 559 U_STABLE int32_t U_EXPORT2 560 uloc_getDisplayLanguage(const char* locale, 561 const char* displayLocale, 562 UChar* language, 563 int32_t languageCapacity, 564 UErrorCode* status); 565 566 /** 567 * Gets the script name suitable for display for the specified locale. 568 * 569 * @param locale the locale to get the displayable script code with. NULL may be used to specify the default. 570 * @param displayLocale Specifies the locale to be used to display the name. In other words, 571 * if the locale's language code is "en", passing Locale::getFrench() for 572 * inLocale would result in "", while passing Locale::getGerman() 573 * for inLocale would result in "". NULL may be used to specify the default. 574 * @param script the displayable country code for localeID 575 * @param scriptCapacity the size of the script buffer to store the 576 * displayable script code with 577 * @param status error information if retrieving the displayable script code failed 578 * @return the actual buffer size needed for the displayable script code. If it's greater 579 * than scriptCapacity, the returned displayable script code will be truncated. 580 * @stable ICU 2.8 581 */ 582 U_STABLE int32_t U_EXPORT2 583 uloc_getDisplayScript(const char* locale, 584 const char* displayLocale, 585 UChar* script, 586 int32_t scriptCapacity, 587 UErrorCode* status); 588 589 /** 590 * Gets the country name suitable for display for the specified locale. 591 * 592 * @param locale the locale to get the displayable country code with. NULL may be used to specify the default. 593 * @param displayLocale Specifies the locale to be used to display the name. In other words, 594 * if the locale's language code is "en", passing Locale::getFrench() for 595 * inLocale would result in "Anglais", while passing Locale::getGerman() 596 * for inLocale would result in "Englisch". NULL may be used to specify the default. 597 * @param country the displayable country code for localeID 598 * @param countryCapacity the size of the country buffer to store the 599 * displayable country code with 600 * @param status error information if retrieving the displayable country code failed 601 * @return the actual buffer size needed for the displayable country code. If it's greater 602 * than countryCapacity, the returned displayable country code will be truncated. 603 * @stable ICU 2.0 604 */ 605 U_STABLE int32_t U_EXPORT2 606 uloc_getDisplayCountry(const char* locale, 607 const char* displayLocale, 608 UChar* country, 609 int32_t countryCapacity, 610 UErrorCode* status); 611 612 613 /** 614 * Gets the variant name suitable for display for the specified locale. 615 * 616 * @param locale the locale to get the displayable variant code with. NULL may be used to specify the default. 617 * @param displayLocale Specifies the locale to be used to display the name. In other words, 618 * if the locale's language code is "en", passing Locale::getFrench() for 619 * inLocale would result in "Anglais", while passing Locale::getGerman() 620 * for inLocale would result in "Englisch". NULL may be used to specify the default. 621 * @param variant the displayable variant code for localeID 622 * @param variantCapacity the size of the variant buffer to store the 623 * displayable variant code with 624 * @param status error information if retrieving the displayable variant code failed 625 * @return the actual buffer size needed for the displayable variant code. If it's greater 626 * than variantCapacity, the returned displayable variant code will be truncated. 627 * @stable ICU 2.0 628 */ 629 U_STABLE int32_t U_EXPORT2 630 uloc_getDisplayVariant(const char* locale, 631 const char* displayLocale, 632 UChar* variant, 633 int32_t variantCapacity, 634 UErrorCode* status); 635 636 /** 637 * Gets the keyword name suitable for display for the specified locale. 638 * E.g: for the locale string de_DE\@collation=PHONEBOOK, this API gets the display 639 * string for the keyword collation. 640 * Usage: 641 * <code> 642 * UErrorCode status = U_ZERO_ERROR; 643 * const char* keyword =NULL; 644 * int32_t keywordLen = 0; 645 * int32_t keywordCount = 0; 646 * UChar displayKeyword[256]; 647 * int32_t displayKeywordLen = 0; 648 * UEnumeration* keywordEnum = uloc_openKeywords("de_DE@collation=PHONEBOOK;calendar=TRADITIONAL", &status); 649 * for(keywordCount = uenum_count(keywordEnum, &status); keywordCount > 0 ; keywordCount--){ 650 * if(U_FAILURE(status)){ 651 * ...something went wrong so handle the error... 652 * break; 653 * } 654 * // the uenum_next returns NUL terminated string 655 * keyword = uenum_next(keywordEnum, &keywordLen, &status); 656 * displayKeywordLen = uloc_getDisplayKeyword(keyword, "en_US", displayKeyword, 256); 657 * ... do something interesting ..... 658 * } 659 * uenum_close(keywordEnum); 660 * </code> 661 * @param keyword The keyword whose display string needs to be returned. 662 * @param displayLocale Specifies the locale to be used to display the name. In other words, 663 * if the locale's language code is "en", passing Locale::getFrench() for 664 * inLocale would result in "Anglais", while passing Locale::getGerman() 665 * for inLocale would result in "Englisch". NULL may be used to specify the default. 666 * @param dest the buffer to which the displayable keyword should be written. 667 * @param destCapacity The size of the buffer (number of UChars). If it is 0, then 668 * dest may be NULL and the function will only return the length of the 669 * result without writing any of the result string (pre-flighting). 670 * @param status error information if retrieving the displayable string failed. 671 * Should not be NULL and should not indicate failure on entry. 672 * @return the actual buffer size needed for the displayable variant code. 673 * @see #uloc_openKeywords 674 * @stable ICU 2.8 675 */ 676 U_STABLE int32_t U_EXPORT2 677 uloc_getDisplayKeyword(const char* keyword, 678 const char* displayLocale, 679 UChar* dest, 680 int32_t destCapacity, 681 UErrorCode* status); 682 /** 683 * Gets the value of the keyword suitable for display for the specified locale. 684 * E.g: for the locale string de_DE\@collation=PHONEBOOK, this API gets the display 685 * string for PHONEBOOK, in the display locale, when "collation" is specified as the keyword. 686 * 687 * @param locale The locale to get the displayable variant code with. NULL may be used to specify the default. 688 * @param keyword The keyword for whose value should be used. 689 * @param displayLocale Specifies the locale to be used to display the name. In other words, 690 * if the locale's language code is "en", passing Locale::getFrench() for 691 * inLocale would result in "Anglais", while passing Locale::getGerman() 692 * for inLocale would result in "Englisch". NULL may be used to specify the default. 693 * @param dest the buffer to which the displayable keyword should be written. 694 * @param destCapacity The size of the buffer (number of UChars). If it is 0, then 695 * dest may be NULL and the function will only return the length of the 696 * result without writing any of the result string (pre-flighting). 697 * @param status error information if retrieving the displayable string failed. 698 * Should not be NULL and must not indicate failure on entry. 699 * @return the actual buffer size needed for the displayable variant code. 700 * @stable ICU 2.8 701 */ 702 U_STABLE int32_t U_EXPORT2 703 uloc_getDisplayKeywordValue( const char* locale, 704 const char* keyword, 705 const char* displayLocale, 706 UChar* dest, 707 int32_t destCapacity, 708 UErrorCode* status); 709 /** 710 * Gets the full name suitable for display for the specified locale. 711 * 712 * @param localeID the locale to get the displayable name with. NULL may be used to specify the default. 713 * @param inLocaleID Specifies the locale to be used to display the name. In other words, 714 * if the locale's language code is "en", passing Locale::getFrench() for 715 * inLocale would result in "Anglais", while passing Locale::getGerman() 716 * for inLocale would result in "Englisch". NULL may be used to specify the default. 717 * @param result the displayable name for localeID 718 * @param maxResultSize the size of the name buffer to store the 719 * displayable full name with 720 * @param err error information if retrieving the displayable name failed 721 * @return the actual buffer size needed for the displayable name. If it's greater 722 * than maxResultSize, the returned displayable name will be truncated. 723 * @stable ICU 2.0 724 */ 725 U_STABLE int32_t U_EXPORT2 726 uloc_getDisplayName(const char* localeID, 727 const char* inLocaleID, 728 UChar* result, 729 int32_t maxResultSize, 730 UErrorCode* err); 731 732 733 /** 734 * Gets the specified locale from a list of all available locales. 735 * The return value is a pointer to an item of 736 * a locale name array. Both this array and the pointers 737 * it contains are owned by ICU and should not be deleted or written through 738 * by the caller. The locale name is terminated by a null pointer. 739 * @param n the specific locale name index of the available locale list 740 * @return a specified locale name of all available locales 741 * @stable ICU 2.0 742 */ 743 U_STABLE const char* U_EXPORT2 744 uloc_getAvailable(int32_t n); 745 746 /** 747 * Gets the size of the all available locale list. 748 * 749 * @return the size of the locale list 750 * @stable ICU 2.0 751 */ 752 U_STABLE int32_t U_EXPORT2 uloc_countAvailable(void); 753 754 /** 755 * 756 * Gets a list of all available language codes defined in ISO 639. This is a pointer 757 * to an array of pointers to arrays of char. All of these pointers are owned 758 * by ICU-- do not delete them, and do not write through them. The array is 759 * terminated with a null pointer. 760 * @return a list of all available language codes 761 * @stable ICU 2.0 762 */ 763 U_STABLE const char* const* U_EXPORT2 764 uloc_getISOLanguages(void); 765 766 /** 767 * 768 * Gets a list of all available 2-letter country codes defined in ISO 639. This is a 769 * pointer to an array of pointers to arrays of char. All of these pointers are 770 * owned by ICU-- do not delete them, and do not write through them. The array is 771 * terminated with a null pointer. 772 * @return a list of all available country codes 773 * @stable ICU 2.0 774 */ 775 U_STABLE const char* const* U_EXPORT2 776 uloc_getISOCountries(void); 777 778 /** 779 * Truncate the locale ID string to get the parent locale ID. 780 * Copies the part of the string before the last underscore. 781 * The parent locale ID will be an empty string if there is no 782 * underscore, or if there is only one underscore at localeID[0]. 783 * 784 * @param localeID Input locale ID string. 785 * @param parent Output string buffer for the parent locale ID. 786 * @param parentCapacity Size of the output buffer. 787 * @param err A UErrorCode value. 788 * @return The length of the parent locale ID. 789 * @stable ICU 2.0 790 */ 791 U_STABLE int32_t U_EXPORT2 792 uloc_getParent(const char* localeID, 793 char* parent, 794 int32_t parentCapacity, 795 UErrorCode* err); 796 797 798 799 800 /** 801 * Gets the full name for the specified locale. 802 * Note: This has the effect of 'canonicalizing' the string to 803 * a certain extent. Upper and lower case are set as needed, 804 * and if the components were in 'POSIX' format they are changed to 805 * ICU format. It does NOT map aliased names in any way. 806 * See the top of this header file. 807 * This API strips off the keyword part, so "de_DE\@collation=phonebook" 808 * will become "de_DE". 809 * This API supports preflighting. 810 * 811 * @param localeID the locale to get the full name with 812 * @param name fill in buffer for the name without keywords. 813 * @param nameCapacity capacity of the fill in buffer. 814 * @param err error information if retrieving the full name failed 815 * @return the actual buffer size needed for the full name. If it's greater 816 * than nameCapacity, the returned full name will be truncated. 817 * @stable ICU 2.8 818 */ 819 U_STABLE int32_t U_EXPORT2 820 uloc_getBaseName(const char* localeID, 821 char* name, 822 int32_t nameCapacity, 823 UErrorCode* err); 824 825 /** 826 * Gets an enumeration of keywords for the specified locale. Enumeration 827 * must get disposed of by the client using uenum_close function. 828 * 829 * @param localeID the locale to get the variant code with 830 * @param status error information if retrieving the keywords failed 831 * @return enumeration of keywords or NULL if there are no keywords. 832 * @stable ICU 2.8 833 */ 834 U_STABLE UEnumeration* U_EXPORT2 835 uloc_openKeywords(const char* localeID, 836 UErrorCode* status); 837 838 /** 839 * Get the value for a keyword. Locale name does not need to be normalized. 840 * 841 * @param localeID locale name containing the keyword ("de_DE@currency=EURO;collation=PHONEBOOK") 842 * @param keywordName name of the keyword for which we want the value. Case insensitive. 843 * @param buffer receiving buffer 844 * @param bufferCapacity capacity of receiving buffer 845 * @param status containing error code - buffer not big enough. 846 * @return the length of keyword value 847 * @stable ICU 2.8 848 */ 849 U_STABLE int32_t U_EXPORT2 850 uloc_getKeywordValue(const char* localeID, 851 const char* keywordName, 852 char* buffer, int32_t bufferCapacity, 853 UErrorCode* status); 854 855 856 /** 857 * Set the value of the specified keyword. 858 * NOTE: Unlike almost every other ICU function which takes a 859 * buffer, this function will NOT truncate the output text. If a 860 * BUFFER_OVERFLOW_ERROR is received, it means that the original 861 * buffer is untouched. This is done to prevent incorrect or possibly 862 * even malformed locales from being generated and used. 863 * 864 * @param keywordName name of the keyword to be set. Case insensitive. 865 * @param keywordValue value of the keyword to be set. If 0-length or 866 * NULL, will result in the keyword being removed. No error is given if 867 * that keyword does not exist. 868 * @param buffer input buffer containing locale to be modified. 869 * @param bufferCapacity capacity of receiving buffer 870 * @param status containing error code - buffer not big enough. 871 * @return the length needed for the buffer 872 * @see uloc_getKeywordValue 873 * @stable ICU 3.2 874 */ 875 U_STABLE int32_t U_EXPORT2 876 uloc_setKeywordValue(const char* keywordName, 877 const char* keywordValue, 878 char* buffer, int32_t bufferCapacity, 879 UErrorCode* status); 880 881 /** 882 * enums for the return value for the character and line orientation 883 * functions. 884 * @stable ICU 4.0 885 */ 886 typedef enum { 887 ULOC_LAYOUT_LTR = 0, /* left-to-right. */ 888 ULOC_LAYOUT_RTL = 1, /* right-to-left. */ 889 ULOC_LAYOUT_TTB = 2, /* top-to-bottom. */ 890 ULOC_LAYOUT_BTT = 3, /* bottom-to-top. */ 891 ULOC_LAYOUT_UNKNOWN 892 } ULayoutType; 893 894 /** 895 * Get the layout character orientation for the specified locale. 896 * 897 * @param localeId locale name 898 * @param status Error status 899 * @return an enum indicating the layout orientation for characters. 900 * @stable ICU 4.0 901 */ 902 U_STABLE ULayoutType U_EXPORT2 903 uloc_getCharacterOrientation(const char* localeId, 904 UErrorCode *status); 905 906 /** 907 * Get the layout line orientation for the specified locale. 908 * 909 * @param localeId locale name 910 * @param status Error status 911 * @return an enum indicating the layout orientation for lines. 912 * @stable ICU 4.0 913 */ 914 U_STABLE ULayoutType U_EXPORT2 915 uloc_getLineOrientation(const char* localeId, 916 UErrorCode *status); 917 918 /** 919 * enums for the 'outResult' parameter return value 920 * @see uloc_acceptLanguageFromHTTP 921 * @see uloc_acceptLanguage 922 * @stable ICU 3.2 923 */ 924 typedef enum { 925 ULOC_ACCEPT_FAILED = 0, /* No exact match was found. */ 926 ULOC_ACCEPT_VALID = 1, /* An exact match was found. */ 927 ULOC_ACCEPT_FALLBACK = 2 /* A fallback was found, for example, 928 Accept list contained 'ja_JP' 929 which matched available locale 'ja'. */ 930 } UAcceptResult; 931 932 933 /** 934 * Based on a HTTP header from a web browser and a list of available locales, 935 * determine an acceptable locale for the user. 936 * @param result - buffer to accept the result locale 937 * @param resultAvailable the size of the result buffer. 938 * @param outResult - An out parameter that contains the fallback status 939 * @param httpAcceptLanguage - "Accept-Language:" header as per HTTP. 940 * @param availableLocales - list of available locales to match 941 * @param status Error status, may be BUFFER_OVERFLOW_ERROR 942 * @return length needed for the locale. 943 * @stable ICU 3.2 944 */ 945 U_STABLE int32_t U_EXPORT2 946 uloc_acceptLanguageFromHTTP(char *result, int32_t resultAvailable, 947 UAcceptResult *outResult, 948 const char *httpAcceptLanguage, 949 UEnumeration* availableLocales, 950 UErrorCode *status); 951 952 /** 953 * Based on a list of available locales, 954 * determine an acceptable locale for the user. 955 * @param result - buffer to accept the result locale 956 * @param resultAvailable the size of the result buffer. 957 * @param outResult - An out parameter that contains the fallback status 958 * @param acceptList - list of acceptable languages 959 * @param acceptListCount - count of acceptList items 960 * @param availableLocales - list of available locales to match 961 * @param status Error status, may be BUFFER_OVERFLOW_ERROR 962 * @return length needed for the locale. 963 * @stable ICU 3.2 964 */ 965 U_STABLE int32_t U_EXPORT2 966 uloc_acceptLanguage(char *result, int32_t resultAvailable, 967 UAcceptResult *outResult, const char **acceptList, 968 int32_t acceptListCount, 969 UEnumeration* availableLocales, 970 UErrorCode *status); 971 972 973 /** 974 * Gets the ICU locale ID for the specified Win32 LCID value. 975 * 976 * @param hostID the Win32 LCID to translate 977 * @param locale the output buffer for the ICU locale ID, which will be NUL-terminated 978 * if there is room. 979 * @param localeCapacity the size of the output buffer 980 * @param status an error is returned if the LCID is unrecognized or the output buffer 981 * is too small 982 * @return actual the actual size of the locale ID, not including NUL-termination 983 * @stable ICU 3.8 984 */ 985 U_STABLE int32_t U_EXPORT2 986 uloc_getLocaleForLCID(uint32_t hostID, char *locale, int32_t localeCapacity, 987 UErrorCode *status); 988 989 990 /** 991 * Add the likely subtags for a provided locale ID, per the algorithm described 992 * in the following CLDR technical report: 993 * 994 * http://www.unicode.org/reports/tr35/#Likely_Subtags 995 * 996 * If localeID is already in the maximal form, or there is no data available 997 * for maximization, it will be copied to the output buffer. For example, 998 * "und-Zzzz" cannot be maximized, since there is no reasonable maximization. 999 * 1000 * Examples: 1001 * 1002 * "en" maximizes to "en_Latn_US" 1003 * 1004 * "de" maximizes to "de_Latn_US" 1005 * 1006 * "sr" maximizes to "sr_Cyrl_RS" 1007 * 1008 * "sh" maximizes to "sr_Latn_RS" (Note this will not reverse.) 1009 * 1010 * "zh_Hani" maximizes to "zh_Hans_CN" (Note this will not reverse.) 1011 * 1012 * @param localeID The locale to maximize 1013 * @param maximizedLocaleID The maximized locale 1014 * @param maximizedLocaleIDCapacity The capacity of the maximizedLocaleID buffer 1015 * @param err Error information if maximizing the locale failed. If the length 1016 * of the localeID and the null-terminator is greater than the maximum allowed size, 1017 * or the localeId is not well-formed, the error code is U_ILLEGAL_ARGUMENT_ERROR. 1018 * @return The actual buffer size needed for the maximized locale. If it's 1019 * greater than maximizedLocaleIDCapacity, the returned ID will be truncated. 1020 * On error, the return value is -1. 1021 * @stable ICU 4.0 1022 */ 1023 U_STABLE int32_t U_EXPORT2 1024 uloc_addLikelySubtags(const char* localeID, 1025 char* maximizedLocaleID, 1026 int32_t maximizedLocaleIDCapacity, 1027 UErrorCode* err); 1028 1029 1030 /** 1031 * Minimize the subtags for a provided locale ID, per the algorithm described 1032 * in the following CLDR technical report: 1033 * 1034 * http://www.unicode.org/reports/tr35/#Likely_Subtags 1035 * 1036 * If localeID is already in the minimal form, or there is no data available 1037 * for minimization, it will be copied to the output buffer. Since the 1038 * minimization algorithm relies on proper maximization, see the comments 1039 * for uloc_addLikelySubtags for reasons why there might not be any data. 1040 * 1041 * Examples: 1042 * 1043 * "en_Latn_US" minimizes to "en" 1044 * 1045 * "de_Latn_US" minimizes to "de" 1046 * 1047 * "sr_Cyrl_RS" minimizes to "sr" 1048 * 1049 * "zh_Hant_TW" minimizes to "zh_TW" (The region is preferred to the 1050 * script, and minimizing to "zh" would imply "zh_Hans_CN".) 1051 * 1052 * @param localeID The locale to minimize 1053 * @param minimizedLocaleID The minimized locale 1054 * @param minimizedLocaleIDCapacity The capacity of the minimizedLocaleID buffer 1055 * @param err Error information if minimizing the locale failed. If the length 1056 * of the localeID and the null-terminator is greater than the maximum allowed size, 1057 * or the localeId is not well-formed, the error code is U_ILLEGAL_ARGUMENT_ERROR. 1058 * @return The actual buffer size needed for the minimized locale. If it's 1059 * greater than minimizedLocaleIDCapacity, the returned ID will be truncated. 1060 * On error, the return value is -1. 1061 * @stable ICU 4.0 1062 */ 1063 U_STABLE int32_t U_EXPORT2 1064 uloc_minimizeSubtags(const char* localeID, 1065 char* minimizedLocaleID, 1066 int32_t minimizedLocaleIDCapacity, 1067 UErrorCode* err); 1068 1069 /** 1070 * Returns a locale ID for the specified BCP47 language tag string. 1071 * If the specified language tag contains any ill-formed subtags, 1072 * the first such subtag and all following subtags are ignored. 1073 * <p> 1074 * This implements the 'Language-Tag' production of BCP47, and so 1075 * supports grandfathered (regular and irregular) as well as private 1076 * use language tags. Private use tags are represented as 'x-whatever', 1077 * and grandfathered tags are converted to their canonical replacements 1078 * where they exist. Note that a few grandfathered tags have no modern 1079 * replacement, these will be converted using the fallback described in 1080 * the first paragraph, so some information might be lost. 1081 * @param langtag the input BCP47 language tag. 1082 * @param localeID the output buffer receiving a locale ID for the 1083 * specified BCP47 language tag. 1084 * @param localeIDCapacity the size of the locale ID output buffer. 1085 * @param parsedLength if not NULL, successfully parsed length 1086 * for the input language tag is set. 1087 * @param err error information if receiving the locald ID 1088 * failed. 1089 * @return the length of the locale ID. 1090 * @stable ICU 4.2 1091 */ 1092 U_STABLE int32_t U_EXPORT2 1093 uloc_forLanguageTag(const char* langtag, 1094 char* localeID, 1095 int32_t localeIDCapacity, 1096 int32_t* parsedLength, 1097 UErrorCode* err); 1098 1099 /** 1100 * Returns a well-formed language tag for this locale ID. 1101 * <p> 1102 * <b>Note</b>: When <code>strict</code> is FALSE, any locale 1103 * fields which do not satisfy the BCP47 syntax requirement will 1104 * be omitted from the result. When <code>strict</code> is 1105 * TRUE, this function sets U_ILLEGAL_ARGUMENT_ERROR to the 1106 * <code>err</code> if any locale fields do not satisfy the 1107 * BCP47 syntax requirement. 1108 * @param localeID the input locale ID 1109 * @param langtag the output buffer receiving BCP47 language 1110 * tag for the locale ID. 1111 * @param langtagCapacity the size of the BCP47 language tag 1112 * output buffer. 1113 * @param strict boolean value indicating if the function returns 1114 * an error for an ill-formed input locale ID. 1115 * @param err error information if receiving the language 1116 * tag failed. 1117 * @return The length of the BCP47 language tag. 1118 * @stable ICU 4.2 1119 */ 1120 U_STABLE int32_t U_EXPORT2 1121 uloc_toLanguageTag(const char* localeID, 1122 char* langtag, 1123 int32_t langtagCapacity, 1124 UBool strict, 1125 UErrorCode* err); 1126 1127 #endif /*_ULOC*/ 1128
