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| 1 /* | |
| 2 ****************************************************************************** | |
| 3 * Copyright (C) 1996-2010, International Business Machines * | |
| 4 * Corporation and others. All Rights Reserved. * | |
| 5 ****************************************************************************** | |
| 6 */ | |
| 7 | |
| 8 /** | |
| 9 * \file | |
| 10 * \brief C++ API: Collation Service. | |
| 11 */ | |
| 12 | |
| 13 /** | |
| 14 * File coll.h | |
| 15 * | |
| 16 * Created by: Helena Shih | |
| 17 * | |
| 18 * Modification History: | |
| 19 * | |
| 20 * Date Name Description | |
| 21 * 02/5/97 aliu Modified createDefault to load collation data from | |
| 22 * binary files when possible. Added related methods | |
| 23 * createCollationFromFile, chopLocale, createPathName. | |
| 24 * 02/11/97 aliu Added members addToCache, findInCache, and fgCache. | |
| 25 * 02/12/97 aliu Modified to create objects from RuleBasedCollator cac
he. | |
| 26 * Moved cache out of Collation class. | |
| 27 * 02/13/97 aliu Moved several methods out of this class and into | |
| 28 * RuleBasedCollator, with modifications. Modified | |
| 29 * createDefault() to call new RuleBasedCollator(Locale&
) | |
| 30 * constructor. General clean up and documentation. | |
| 31 * 02/20/97 helena Added clone, operator==, operator!=, operator=, copy | |
| 32 * constructor and getDynamicClassID. | |
| 33 * 03/25/97 helena Updated with platform independent data types. | |
| 34 * 05/06/97 helena Added memory allocation error detection. | |
| 35 * 06/20/97 helena Java class name change. | |
| 36 * 09/03/97 helena Added createCollationKeyValues(). | |
| 37 * 02/10/98 damiba Added compare() with length as parameter. | |
| 38 * 04/23/99 stephen Removed EDecompositionMode, merged with | |
| 39 * Normalizer::EMode. | |
| 40 * 11/02/99 helena Collator performance enhancements. Eliminates the | |
| 41 * UnicodeString construction and special case for NO_OP
. | |
| 42 * 11/23/99 srl More performance enhancements. Inlining of | |
| 43 * critical accessors. | |
| 44 * 05/15/00 helena Added version information API. | |
| 45 * 01/29/01 synwee Modified into a C++ wrapper which calls C apis | |
| 46 * (ucoll.h). | |
| 47 */ | |
| 48 | |
| 49 #ifndef COLL_H | |
| 50 #define COLL_H | |
| 51 | |
| 52 #include "unicode/utypes.h" | |
| 53 | |
| 54 #if !UCONFIG_NO_COLLATION | |
| 55 | |
| 56 #include "unicode/uobject.h" | |
| 57 #include "unicode/ucol.h" | |
| 58 #include "unicode/normlzr.h" | |
| 59 #include "unicode/locid.h" | |
| 60 #include "unicode/uniset.h" | |
| 61 #include "unicode/umisc.h" | |
| 62 #include "unicode/uiter.h" | |
| 63 #include "unicode/stringpiece.h" | |
| 64 | |
| 65 U_NAMESPACE_BEGIN | |
| 66 | |
| 67 class StringEnumeration; | |
| 68 | |
| 69 #if !UCONFIG_NO_SERVICE | |
| 70 /** | |
| 71 * @stable ICU 2.6 | |
| 72 */ | |
| 73 class CollatorFactory; | |
| 74 #endif | |
| 75 | |
| 76 /** | |
| 77 * @stable ICU 2.0 | |
| 78 */ | |
| 79 class CollationKey; | |
| 80 | |
| 81 /** | |
| 82 * The <code>Collator</code> class performs locale-sensitive string | |
| 83 * comparison.<br> | |
| 84 * You use this class to build searching and sorting routines for natural | |
| 85 * language text.<br> | |
| 86 * <em>Important: </em>The ICU collation service has been reimplemented | |
| 87 * in order to achieve better performance and UCA compliance. | |
| 88 * For details, see the | |
| 89 * <a href="http://source.icu-project.org/repos/icu/icuhtml/trunk/design/collatio
n/ICU_collation_design.htm"> | |
| 90 * collation design document</a>. | |
| 91 * <p> | |
| 92 * <code>Collator</code> is an abstract base class. Subclasses implement | |
| 93 * specific collation strategies. One subclass, | |
| 94 * <code>RuleBasedCollator</code>, is currently provided and is applicable | |
| 95 * to a wide set of languages. Other subclasses may be created to handle more | |
| 96 * specialized needs. | |
| 97 * <p> | |
| 98 * Like other locale-sensitive classes, you can use the static factory method, | |
| 99 * <code>createInstance</code>, to obtain the appropriate | |
| 100 * <code>Collator</code> object for a given locale. You will only need to | |
| 101 * look at the subclasses of <code>Collator</code> if you need to | |
| 102 * understand the details of a particular collation strategy or if you need to | |
| 103 * modify that strategy. | |
| 104 * <p> | |
| 105 * The following example shows how to compare two strings using the | |
| 106 * <code>Collator</code> for the default locale. | |
| 107 * \htmlonly<blockquote>\endhtmlonly | |
| 108 * <pre> | |
| 109 * \code | |
| 110 * // Compare two strings in the default locale | |
| 111 * UErrorCode success = U_ZERO_ERROR; | |
| 112 * Collator* myCollator = Collator::createInstance(success); | |
| 113 * if (myCollator->compare("abc", "ABC") < 0) | |
| 114 * cout << "abc is less than ABC" << endl; | |
| 115 * else | |
| 116 * cout << "abc is greater than or equal to ABC" << endl; | |
| 117 * \endcode | |
| 118 * </pre> | |
| 119 * \htmlonly</blockquote>\endhtmlonly | |
| 120 * <p> | |
| 121 * You can set a <code>Collator</code>'s <em>strength</em> property to | |
| 122 * determine the level of difference considered significant in comparisons. | |
| 123 * Five strengths are provided: <code>PRIMARY</code>, <code>SECONDARY</code>, | |
| 124 * <code>TERTIARY</code>, <code>QUATERNARY</code> and <code>IDENTICAL</code>. | |
| 125 * The exact assignment of strengths to language features is locale dependant. | |
| 126 * For example, in Czech, "e" and "f" are considered primary differences, | |
| 127 * while "e" and "\u00EA" are secondary differences, "e" and "E" are tertiary | |
| 128 * differences and "e" and "e" are identical. The following shows how both case | |
| 129 * and accents could be ignored for US English. | |
| 130 * \htmlonly<blockquote>\endhtmlonly | |
| 131 * <pre> | |
| 132 * \code | |
| 133 * //Get the Collator for US English and set its strength to PRIMARY | |
| 134 * UErrorCode success = U_ZERO_ERROR; | |
| 135 * Collator* usCollator = Collator::createInstance(Locale::US, success); | |
| 136 * usCollator->setStrength(Collator::PRIMARY); | |
| 137 * if (usCollator->compare("abc", "ABC") == 0) | |
| 138 * cout << "'abc' and 'ABC' strings are equivalent with strength PRIMARY" <<
endl; | |
| 139 * \endcode | |
| 140 * </pre> | |
| 141 * \htmlonly</blockquote>\endhtmlonly | |
| 142 * <p> | |
| 143 * For comparing strings exactly once, the <code>compare</code> method | |
| 144 * provides the best performance. When sorting a list of strings however, it | |
| 145 * is generally necessary to compare each string multiple times. In this case, | |
| 146 * sort keys provide better performance. The <code>getSortKey</code> methods | |
| 147 * convert a string to a series of bytes that can be compared bitwise against | |
| 148 * other sort keys using <code>strcmp()</code>. Sort keys are written as | |
| 149 * zero-terminated byte strings. They consist of several substrings, one for | |
| 150 * each collation strength level, that are delimited by 0x01 bytes. | |
| 151 * If the string code points are appended for UCOL_IDENTICAL, then they are | |
| 152 * processed for correct code point order comparison and may contain 0x01 | |
| 153 * bytes but not zero bytes. | |
| 154 * </p> | |
| 155 * <p> | |
| 156 * An older set of APIs returns a <code>CollationKey</code> object that wraps | |
| 157 * the sort key bytes instead of returning the bytes themselves. | |
| 158 * Its use is deprecated, but it is still available for compatibility with | |
| 159 * Java. | |
| 160 * </p> | |
| 161 * <p> | |
| 162 * <strong>Note:</strong> <code>Collator</code>s with different Locale, | |
| 163 * and CollationStrength settings will return different sort | |
| 164 * orders for the same set of strings. Locales have specific collation rules, | |
| 165 * and the way in which secondary and tertiary differences are taken into | |
| 166 * account, for example, will result in a different sorting order for same | |
| 167 * strings. | |
| 168 * </p> | |
| 169 * @see RuleBasedCollator | |
| 170 * @see CollationKey | |
| 171 * @see CollationElementIterator | |
| 172 * @see Locale | |
| 173 * @see Normalizer | |
| 174 * @version 2.0 11/15/01 | |
| 175 */ | |
| 176 | |
| 177 class U_I18N_API Collator : public UObject { | |
| 178 public: | |
| 179 | |
| 180 // Collator public enums ----------------------------------------------- | |
| 181 | |
| 182 /** | |
| 183 * Base letter represents a primary difference. Set comparison level to | |
| 184 * PRIMARY to ignore secondary and tertiary differences.<br> | |
| 185 * Use this to set the strength of a Collator object.<br> | |
| 186 * Example of primary difference, "abc" < "abd" | |
| 187 * | |
| 188 * Diacritical differences on the same base letter represent a secondary | |
| 189 * difference. Set comparison level to SECONDARY to ignore tertiary | |
| 190 * differences. Use this to set the strength of a Collator object.<br> | |
| 191 * Example of secondary difference, "ä" >> "a". | |
| 192 * | |
| 193 * Uppercase and lowercase versions of the same character represents a | |
| 194 * tertiary difference. Set comparison level to TERTIARY to include all | |
| 195 * comparison differences. Use this to set the strength of a Collator | |
| 196 * object.<br> | |
| 197 * Example of tertiary difference, "abc" <<< "ABC". | |
| 198 * | |
| 199 * Two characters are considered "identical" when they have the same unicode | |
| 200 * spellings.<br> | |
| 201 * For example, "ä" == "ä". | |
| 202 * | |
| 203 * UCollationStrength is also used to determine the strength of sort keys | |
| 204 * generated from Collator objects. | |
| 205 * @stable ICU 2.0 | |
| 206 */ | |
| 207 enum ECollationStrength | |
| 208 { | |
| 209 PRIMARY = 0, | |
| 210 SECONDARY = 1, | |
| 211 TERTIARY = 2, | |
| 212 QUATERNARY = 3, | |
| 213 IDENTICAL = 15 | |
| 214 }; | |
| 215 | |
| 216 /** | |
| 217 * LESS is returned if source string is compared to be less than target | |
| 218 * string in the compare() method. | |
| 219 * EQUAL is returned if source string is compared to be equal to target | |
| 220 * string in the compare() method. | |
| 221 * GREATER is returned if source string is compared to be greater than | |
| 222 * target string in the compare() method. | |
| 223 * @see Collator#compare | |
| 224 * @deprecated ICU 2.6. Use C enum UCollationResult defined in ucol.h | |
| 225 */ | |
| 226 enum EComparisonResult | |
| 227 { | |
| 228 LESS = -1, | |
| 229 EQUAL = 0, | |
| 230 GREATER = 1 | |
| 231 }; | |
| 232 | |
| 233 // Collator public destructor ----------------------------------------- | |
| 234 | |
| 235 /** | |
| 236 * Destructor | |
| 237 * @stable ICU 2.0 | |
| 238 */ | |
| 239 virtual ~Collator(); | |
| 240 | |
| 241 // Collator public methods -------------------------------------------- | |
| 242 | |
| 243 /** | |
| 244 * Returns true if "other" is the same as "this" | |
| 245 * @param other Collator object to be compared | |
| 246 * @return true if other is the same as this. | |
| 247 * @stable ICU 2.0 | |
| 248 */ | |
| 249 virtual UBool operator==(const Collator& other) const; | |
| 250 | |
| 251 /** | |
| 252 * Returns true if "other" is not the same as "this". | |
| 253 * @param other Collator object to be compared | |
| 254 * @return true if other is not the same as this. | |
| 255 * @stable ICU 2.0 | |
| 256 */ | |
| 257 virtual UBool operator!=(const Collator& other) const; | |
| 258 | |
| 259 /** | |
| 260 * Makes a shallow copy of the current object. | |
| 261 * @return a copy of this object | |
| 262 * @stable ICU 2.0 | |
| 263 */ | |
| 264 virtual Collator* clone(void) const = 0; | |
| 265 | |
| 266 /** | |
| 267 * Creates the Collator object for the current default locale. | |
| 268 * The default locale is determined by Locale::getDefault. | |
| 269 * The UErrorCode& err parameter is used to return status information to the
user. | |
| 270 * To check whether the construction succeeded or not, you should check the | |
| 271 * value of U_SUCCESS(err). If you wish more detailed information, you can | |
| 272 * check for informational error results which still indicate success. | |
| 273 * U_USING_FALLBACK_ERROR indicates that a fall back locale was used. For | |
| 274 * example, 'de_CH' was requested, but nothing was found there, so 'de' was | |
| 275 * used. U_USING_DEFAULT_ERROR indicates that the default locale data was | |
| 276 * used; neither the requested locale nor any of its fall back locales | |
| 277 * could be found. | |
| 278 * The caller owns the returned object and is responsible for deleting it. | |
| 279 * | |
| 280 * @param err the error code status. | |
| 281 * @return the collation object of the default locale.(for example, en
_US) | |
| 282 * @see Locale#getDefault | |
| 283 * @stable ICU 2.0 | |
| 284 */ | |
| 285 static Collator* U_EXPORT2 createInstance(UErrorCode& err); | |
| 286 | |
| 287 /** | |
| 288 * Gets the table-based collation object for the desired locale. The | |
| 289 * resource of the desired locale will be loaded by ResourceLoader. | |
| 290 * Locale::ENGLISH is the base collation table and all other languages are | |
| 291 * built on top of it with additional language-specific modifications. | |
| 292 * The UErrorCode& err parameter is used to return status information to the
user. | |
| 293 * To check whether the construction succeeded or not, you should check | |
| 294 * the value of U_SUCCESS(err). If you wish more detailed information, you | |
| 295 * can check for informational error results which still indicate success. | |
| 296 * U_USING_FALLBACK_ERROR indicates that a fall back locale was used. For | |
| 297 * example, 'de_CH' was requested, but nothing was found there, so 'de' was | |
| 298 * used. U_USING_DEFAULT_ERROR indicates that the default locale data was | |
| 299 * used; neither the requested locale nor any of its fall back locales | |
| 300 * could be found. | |
| 301 * The caller owns the returned object and is responsible for deleting it. | |
| 302 * @param loc The locale ID for which to open a collator. | |
| 303 * @param err the error code status. | |
| 304 * @return the created table-based collation object based on the desir
ed | |
| 305 * locale. | |
| 306 * @see Locale | |
| 307 * @see ResourceLoader | |
| 308 * @stable ICU 2.2 | |
| 309 */ | |
| 310 static Collator* U_EXPORT2 createInstance(const Locale& loc, UErrorCode& err
); | |
| 311 | |
| 312 #ifdef U_USE_COLLATION_OBSOLETE_2_6 | |
| 313 /** | |
| 314 * Create a Collator with a specific version. | |
| 315 * This is the same as createInstance(loc, err) except that getVersion() of | |
| 316 * the returned object is guaranteed to be the same as the version | |
| 317 * parameter. | |
| 318 * This is designed to be used to open the same collator for a given | |
| 319 * locale even when ICU is updated. | |
| 320 * The same locale and version guarantees the same sort keys and | |
| 321 * comparison results. | |
| 322 * <p> | |
| 323 * Note: this API will be removed in a future release. Use | |
| 324 * <tt>createInstance(const Locale&, UErrorCode&) instead.</tt></p> | |
| 325 * | |
| 326 * @param loc The locale ID for which to open a collator. | |
| 327 * @param version The requested collator version. | |
| 328 * @param err A reference to a UErrorCode, | |
| 329 * must not indicate a failure before calling this function. | |
| 330 * @return A pointer to a Collator, or 0 if an error occurred | |
| 331 * or a collator with the requested version is not available. | |
| 332 * | |
| 333 * @see getVersion | |
| 334 * @obsolete ICU 2.6 | |
| 335 */ | |
| 336 static Collator *createInstance(const Locale &loc, UVersionInfo version, UEr
rorCode &err); | |
| 337 #endif | |
| 338 | |
| 339 /** | |
| 340 * The comparison function compares the character data stored in two | |
| 341 * different strings. Returns information about whether a string is less | |
| 342 * than, greater than or equal to another string. | |
| 343 * @param source the source string to be compared with. | |
| 344 * @param target the string that is to be compared with the source string. | |
| 345 * @return Returns a byte value. GREATER if source is greater | |
| 346 * than target; EQUAL if source is equal to target; LESS if source is less | |
| 347 * than target | |
| 348 * @deprecated ICU 2.6 use the overload with UErrorCode & | |
| 349 */ | |
| 350 virtual EComparisonResult compare(const UnicodeString& source, | |
| 351 const UnicodeString& target) const; | |
| 352 | |
| 353 /** | |
| 354 * The comparison function compares the character data stored in two | |
| 355 * different strings. Returns information about whether a string is less | |
| 356 * than, greater than or equal to another string. | |
| 357 * @param source the source string to be compared with. | |
| 358 * @param target the string that is to be compared with the source string. | |
| 359 * @param status possible error code | |
| 360 * @return Returns an enum value. UCOL_GREATER if source is greater | |
| 361 * than target; UCOL_EQUAL if source is equal to target; UCOL_LESS if source
is less | |
| 362 * than target | |
| 363 * @stable ICU 2.6 | |
| 364 */ | |
| 365 virtual UCollationResult compare(const UnicodeString& source, | |
| 366 const UnicodeString& target, | |
| 367 UErrorCode &status) const = 0; | |
| 368 | |
| 369 /** | |
| 370 * Does the same thing as compare but limits the comparison to a specified | |
| 371 * length | |
| 372 * @param source the source string to be compared with. | |
| 373 * @param target the string that is to be compared with the source string. | |
| 374 * @param length the length the comparison is limited to | |
| 375 * @return Returns a byte value. GREATER if source (up to the specified | |
| 376 * length) is greater than target; EQUAL if source (up to specified | |
| 377 * length) is equal to target; LESS if source (up to the specified | |
| 378 * length) is less than target. | |
| 379 * @deprecated ICU 2.6 use the overload with UErrorCode & | |
| 380 */ | |
| 381 virtual EComparisonResult compare(const UnicodeString& source, | |
| 382 const UnicodeString& target, | |
| 383 int32_t length) const; | |
| 384 | |
| 385 /** | |
| 386 * Does the same thing as compare but limits the comparison to a specified | |
| 387 * length | |
| 388 * @param source the source string to be compared with. | |
| 389 * @param target the string that is to be compared with the source string. | |
| 390 * @param length the length the comparison is limited to | |
| 391 * @param status possible error code | |
| 392 * @return Returns an enum value. UCOL_GREATER if source (up to the specifie
d | |
| 393 * length) is greater than target; UCOL_EQUAL if source (up to speci
fied | |
| 394 * length) is equal to target; UCOL_LESS if source (up to the specif
ied | |
| 395 * length) is less than target. | |
| 396 * @stable ICU 2.6 | |
| 397 */ | |
| 398 virtual UCollationResult compare(const UnicodeString& source, | |
| 399 const UnicodeString& target, | |
| 400 int32_t length, | |
| 401 UErrorCode &status) const = 0; | |
| 402 | |
| 403 /** | |
| 404 * The comparison function compares the character data stored in two | |
| 405 * different string arrays. Returns information about whether a string array | |
| 406 * is less than, greater than or equal to another string array. | |
| 407 * @param source the source string array to be compared with. | |
| 408 * @param sourceLength the length of the source string array. If this value | |
| 409 * is equal to -1, the string array is null-terminated. | |
| 410 * @param target the string that is to be compared with the source string. | |
| 411 * @param targetLength the length of the target string array. If this value | |
| 412 * is equal to -1, the string array is null-terminated. | |
| 413 * @return Returns a byte value. GREATER if source is greater than target; | |
| 414 * EQUAL if source is equal to target; LESS if source is less than | |
| 415 * target | |
| 416 * @deprecated ICU 2.6 use the overload with UErrorCode & | |
| 417 */ | |
| 418 virtual EComparisonResult compare(const UChar* source, int32_t sourceLength, | |
| 419 const UChar* target, int32_t targetLength) | |
| 420 const; | |
| 421 | |
| 422 /** | |
| 423 * The comparison function compares the character data stored in two | |
| 424 * different string arrays. Returns information about whether a string array | |
| 425 * is less than, greater than or equal to another string array. | |
| 426 * @param source the source string array to be compared with. | |
| 427 * @param sourceLength the length of the source string array. If this value | |
| 428 * is equal to -1, the string array is null-terminated. | |
| 429 * @param target the string that is to be compared with the source string. | |
| 430 * @param targetLength the length of the target string array. If this value | |
| 431 * is equal to -1, the string array is null-terminated. | |
| 432 * @param status possible error code | |
| 433 * @return Returns an enum value. UCOL_GREATER if source is greater | |
| 434 * than target; UCOL_EQUAL if source is equal to target; UCOL_LESS if source
is less | |
| 435 * than target | |
| 436 * @stable ICU 2.6 | |
| 437 */ | |
| 438 virtual UCollationResult compare(const UChar* source, int32_t sourceLength, | |
| 439 const UChar* target, int32_t targetLength, | |
| 440 UErrorCode &status) const = 0; | |
| 441 | |
| 442 /** | |
| 443 * Compares two strings using the Collator. | |
| 444 * Returns whether the first one compares less than/equal to/greater than | |
| 445 * the second one. | |
| 446 * This version takes UCharIterator input. | |
| 447 * @param sIter the first ("source") string iterator | |
| 448 * @param tIter the second ("target") string iterator | |
| 449 * @param status ICU status | |
| 450 * @return UCOL_LESS, UCOL_EQUAL or UCOL_GREATER | |
| 451 * @stable ICU 4.2 | |
| 452 */ | |
| 453 virtual UCollationResult compare(UCharIterator &sIter, | |
| 454 UCharIterator &tIter, | |
| 455 UErrorCode &status) const; | |
| 456 | |
| 457 /** | |
| 458 * Compares two UTF-8 strings using the Collator. | |
| 459 * Returns whether the first one compares less than/equal to/greater than | |
| 460 * the second one. | |
| 461 * This version takes UTF-8 input. | |
| 462 * Note that a StringPiece can be implicitly constructed | |
| 463 * from a std::string or a NUL-terminated const char * string. | |
| 464 * @param source the first UTF-8 string | |
| 465 * @param target the second UTF-8 string | |
| 466 * @param status ICU status | |
| 467 * @return UCOL_LESS, UCOL_EQUAL or UCOL_GREATER | |
| 468 * @stable ICU 4.2 | |
| 469 */ | |
| 470 virtual UCollationResult compareUTF8(const StringPiece &source, | |
| 471 const StringPiece &target, | |
| 472 UErrorCode &status) const; | |
| 473 | |
| 474 /** | |
| 475 * Transforms the string into a series of characters that can be compared | |
| 476 * with CollationKey::compareTo. It is not possible to restore the original | |
| 477 * string from the chars in the sort key. The generated sort key handles | |
| 478 * only a limited number of ignorable characters. | |
| 479 * <p>Use CollationKey::equals or CollationKey::compare to compare the | |
| 480 * generated sort keys. | |
| 481 * If the source string is null, a null collation key will be returned. | |
| 482 * @param source the source string to be transformed into a sort key. | |
| 483 * @param key the collation key to be filled in | |
| 484 * @param status the error code status. | |
| 485 * @return the collation key of the string based on the collation rules. | |
| 486 * @see CollationKey#compare | |
| 487 * @deprecated ICU 2.8 Use getSortKey(...) instead | |
| 488 */ | |
| 489 virtual CollationKey& getCollationKey(const UnicodeString& source, | |
| 490 CollationKey& key, | |
| 491 UErrorCode& status) const = 0; | |
| 492 | |
| 493 /** | |
| 494 * Transforms the string into a series of characters that can be compared | |
| 495 * with CollationKey::compareTo. It is not possible to restore the original | |
| 496 * string from the chars in the sort key. The generated sort key handles | |
| 497 * only a limited number of ignorable characters. | |
| 498 * <p>Use CollationKey::equals or CollationKey::compare to compare the | |
| 499 * generated sort keys. | |
| 500 * <p>If the source string is null, a null collation key will be returned. | |
| 501 * @param source the source string to be transformed into a sort key. | |
| 502 * @param sourceLength length of the collation key | |
| 503 * @param key the collation key to be filled in | |
| 504 * @param status the error code status. | |
| 505 * @return the collation key of the string based on the collation rules. | |
| 506 * @see CollationKey#compare | |
| 507 * @deprecated ICU 2.8 Use getSortKey(...) instead | |
| 508 */ | |
| 509 virtual CollationKey& getCollationKey(const UChar*source, | |
| 510 int32_t sourceLength, | |
| 511 CollationKey& key, | |
| 512 UErrorCode& status) const = 0; | |
| 513 /** | |
| 514 * Generates the hash code for the collation object | |
| 515 * @stable ICU 2.0 | |
| 516 */ | |
| 517 virtual int32_t hashCode(void) const = 0; | |
| 518 | |
| 519 /** | |
| 520 * Gets the locale of the Collator | |
| 521 * | |
| 522 * @param type can be either requested, valid or actual locale. For more | |
| 523 * information see the definition of ULocDataLocaleType in | |
| 524 * uloc.h | |
| 525 * @param status the error code status. | |
| 526 * @return locale where the collation data lives. If the collator | |
| 527 * was instantiated from rules, locale is empty. | |
| 528 * @deprecated ICU 2.8 This API is under consideration for revision | |
| 529 * in ICU 3.0. | |
| 530 */ | |
| 531 virtual const Locale getLocale(ULocDataLocaleType type, UErrorCode& status)
const = 0; | |
| 532 | |
| 533 /** | |
| 534 * Convenience method for comparing two strings based on the collation rules
. | |
| 535 * @param source the source string to be compared with. | |
| 536 * @param target the target string to be compared with. | |
| 537 * @return true if the first string is greater than the second one, | |
| 538 * according to the collation rules. false, otherwise. | |
| 539 * @see Collator#compare | |
| 540 * @stable ICU 2.0 | |
| 541 */ | |
| 542 UBool greater(const UnicodeString& source, const UnicodeString& target) | |
| 543 const; | |
| 544 | |
| 545 /** | |
| 546 * Convenience method for comparing two strings based on the collation rules
. | |
| 547 * @param source the source string to be compared with. | |
| 548 * @param target the target string to be compared with. | |
| 549 * @return true if the first string is greater than or equal to the second | |
| 550 * one, according to the collation rules. false, otherwise. | |
| 551 * @see Collator#compare | |
| 552 * @stable ICU 2.0 | |
| 553 */ | |
| 554 UBool greaterOrEqual(const UnicodeString& source, | |
| 555 const UnicodeString& target) const; | |
| 556 | |
| 557 /** | |
| 558 * Convenience method for comparing two strings based on the collation rules
. | |
| 559 * @param source the source string to be compared with. | |
| 560 * @param target the target string to be compared with. | |
| 561 * @return true if the strings are equal according to the collation rules. | |
| 562 * false, otherwise. | |
| 563 * @see Collator#compare | |
| 564 * @stable ICU 2.0 | |
| 565 */ | |
| 566 UBool equals(const UnicodeString& source, const UnicodeString& target) const
; | |
| 567 | |
| 568 /** | |
| 569 * Determines the minimum strength that will be use in comparison or | |
| 570 * transformation. | |
| 571 * <p>E.g. with strength == SECONDARY, the tertiary difference is ignored | |
| 572 * <p>E.g. with strength == PRIMARY, the secondary and tertiary difference | |
| 573 * are ignored. | |
| 574 * @return the current comparison level. | |
| 575 * @see Collator#setStrength | |
| 576 * @deprecated ICU 2.6 Use getAttribute(UCOL_STRENGTH...) instead | |
| 577 */ | |
| 578 virtual ECollationStrength getStrength(void) const = 0; | |
| 579 | |
| 580 /** | |
| 581 * Sets the minimum strength to be used in comparison or transformation. | |
| 582 * <p>Example of use: | |
| 583 * <pre> | |
| 584 * \code | |
| 585 * UErrorCode status = U_ZERO_ERROR; | |
| 586 * Collator*myCollation = Collator::createInstance(Locale::US, status); | |
| 587 * if (U_FAILURE(status)) return; | |
| 588 * myCollation->setStrength(Collator::PRIMARY); | |
| 589 * // result will be "abc" == "ABC" | |
| 590 * // tertiary differences will be ignored | |
| 591 * Collator::ComparisonResult result = myCollation->compare("abc", "ABC"); | |
| 592 * \endcode | |
| 593 * </pre> | |
| 594 * @see Collator#getStrength | |
| 595 * @param newStrength the new comparison level. | |
| 596 * @deprecated ICU 2.6 Use setAttribute(UCOL_STRENGTH...) instead | |
| 597 */ | |
| 598 virtual void setStrength(ECollationStrength newStrength) = 0; | |
| 599 | |
| 600 /** | |
| 601 * Get the current reordering of scripts (if one has been set). | |
| 602 * @param dest The array to fill with the script ordering. | |
| 603 * @param destCapacity The length of dest. If it is 0, then dest may be NULL
and the function will only return the length of the result without writing any
of the result string (pre-flighting). | |
| 604 * @param pErrorCode Must be a valid pointer to an error code value, which m
ust not indicate a failure before the function call. | |
| 605 * @return The length of the array of the script ordering. | |
| 606 * @see ucol_getReorderCodes | |
| 607 * @internal | |
| 608 */ | |
| 609 virtual int32_t getReorderCodes(int32_t *dest, | |
| 610 int32_t destCapacity, | |
| 611 UErrorCode& status) const; | |
| 612 | |
| 613 /** | |
| 614 * Set the ordering of scripts for this collator. | |
| 615 * @param reorderCodes An array of reorder codes in the new order. | |
| 616 * @param reorderCodesLength The length of reorderCodes. | |
| 617 * @see ucol_setReorderCodes | |
| 618 * @internal | |
| 619 */ | |
| 620 virtual void setReorderCodes(const int32_t* reorderCodes, | |
| 621 int32_t reorderCodesLength, | |
| 622 UErrorCode& status) ; | |
| 623 | |
| 624 /** | |
| 625 * Get name of the object for the desired Locale, in the desired langauge | |
| 626 * @param objectLocale must be from getAvailableLocales | |
| 627 * @param displayLocale specifies the desired locale for output | |
| 628 * @param name the fill-in parameter of the return value | |
| 629 * @return display-able name of the object for the object locale in the | |
| 630 * desired language | |
| 631 * @stable ICU 2.0 | |
| 632 */ | |
| 633 static UnicodeString& U_EXPORT2 getDisplayName(const Locale& objectLocale, | |
| 634 const Locale& displayLocale, | |
| 635 UnicodeString& name); | |
| 636 | |
| 637 /** | |
| 638 * Get name of the object for the desired Locale, in the langauge of the | |
| 639 * default locale. | |
| 640 * @param objectLocale must be from getAvailableLocales | |
| 641 * @param name the fill-in parameter of the return value | |
| 642 * @return name of the object for the desired locale in the default language | |
| 643 * @stable ICU 2.0 | |
| 644 */ | |
| 645 static UnicodeString& U_EXPORT2 getDisplayName(const Locale& objectLocale, | |
| 646 UnicodeString& name); | |
| 647 | |
| 648 /** | |
| 649 * Get the set of Locales for which Collations are installed. | |
| 650 * | |
| 651 * <p>Note this does not include locales supported by registered collators. | |
| 652 * If collators might have been registered, use the overload of getAvailable
Locales | |
| 653 * that returns a StringEnumeration.</p> | |
| 654 * | |
| 655 * @param count the output parameter of number of elements in the locale lis
t | |
| 656 * @return the list of available locales for which collations are installed | |
| 657 * @stable ICU 2.0 | |
| 658 */ | |
| 659 static const Locale* U_EXPORT2 getAvailableLocales(int32_t& count); | |
| 660 | |
| 661 /** | |
| 662 * Return a StringEnumeration over the locales available at the time of the
call, | |
| 663 * including registered locales. If a severe error occurs (such as out of m
emory | |
| 664 * condition) this will return null. If there is no locale data, an empty en
umeration | |
| 665 * will be returned. | |
| 666 * @return a StringEnumeration over the locales available at the time of the
call | |
| 667 * @stable ICU 2.6 | |
| 668 */ | |
| 669 static StringEnumeration* U_EXPORT2 getAvailableLocales(void); | |
| 670 | |
| 671 /** | |
| 672 * Create a string enumerator of all possible keywords that are relevant to | |
| 673 * collation. At this point, the only recognized keyword for this | |
| 674 * service is "collation". | |
| 675 * @param status input-output error code | |
| 676 * @return a string enumeration over locale strings. The caller is | |
| 677 * responsible for closing the result. | |
| 678 * @stable ICU 3.0 | |
| 679 */ | |
| 680 static StringEnumeration* U_EXPORT2 getKeywords(UErrorCode& status); | |
| 681 | |
| 682 /** | |
| 683 * Given a keyword, create a string enumeration of all values | |
| 684 * for that keyword that are currently in use. | |
| 685 * @param keyword a particular keyword as enumerated by | |
| 686 * ucol_getKeywords. If any other keyword is passed in, status is set | |
| 687 * to U_ILLEGAL_ARGUMENT_ERROR. | |
| 688 * @param status input-output error code | |
| 689 * @return a string enumeration over collation keyword values, or NULL | |
| 690 * upon error. The caller is responsible for deleting the result. | |
| 691 * @stable ICU 3.0 | |
| 692 */ | |
| 693 static StringEnumeration* U_EXPORT2 getKeywordValues(const char *keyword, UE
rrorCode& status); | |
| 694 | |
| 695 /** | |
| 696 * Given a key and a locale, returns an array of string values in a preferre
d | |
| 697 * order that would make a difference. These are all and only those values w
here | |
| 698 * the open (creation) of the service with the locale formed from the input
locale | |
| 699 * plus input keyword and that value has different behavior than creation wi
th the | |
| 700 * input locale alone. | |
| 701 * @param keyword one of the keys supported by this service. For now
, only | |
| 702 * "collation" is supported. | |
| 703 * @param locale the locale | |
| 704 * @param commonlyUsed if set to true it will return only commonly used val
ues | |
| 705 * with the given locale in preferred order. Otherwise
, | |
| 706 * it will return all the available values for the loca
le. | |
| 707 * @param status ICU status | |
| 708 * @return a string enumeration over keyword values for the given key and th
e locale. | |
| 709 * @stable ICU 4.2 | |
| 710 */ | |
| 711 static StringEnumeration* U_EXPORT2 getKeywordValuesForLocale(const char* ke
yword, const Locale& locale, | |
| 712 UBool common
lyUsed, UErrorCode& status); | |
| 713 | |
| 714 /** | |
| 715 * Return the functionally equivalent locale for the given | |
| 716 * requested locale, with respect to given keyword, for the | |
| 717 * collation service. If two locales return the same result, then | |
| 718 * collators instantiated for these locales will behave | |
| 719 * equivalently. The converse is not always true; two collators | |
| 720 * may in fact be equivalent, but return different results, due to | |
| 721 * internal details. The return result has no other meaning than | |
| 722 * that stated above, and implies nothing as to the relationship | |
| 723 * between the two locales. This is intended for use by | |
| 724 * applications who wish to cache collators, or otherwise reuse | |
| 725 * collators when possible. The functional equivalent may change | |
| 726 * over time. For more information, please see the <a | |
| 727 * href="http://icu-project.org/userguide/locale.html#services"> | |
| 728 * Locales and Services</a> section of the ICU User Guide. | |
| 729 * @param keyword a particular keyword as enumerated by | |
| 730 * ucol_getKeywords. | |
| 731 * @param locale the requested locale | |
| 732 * @param isAvailable reference to a fillin parameter that | |
| 733 * indicates whether the requested locale was 'available' to the | |
| 734 * collation service. A locale is defined as 'available' if it | |
| 735 * physically exists within the collation locale data. | |
| 736 * @param status reference to input-output error code | |
| 737 * @return the functionally equivalent collation locale, or the root | |
| 738 * locale upon error. | |
| 739 * @stable ICU 3.0 | |
| 740 */ | |
| 741 static Locale U_EXPORT2 getFunctionalEquivalent(const char* keyword, const L
ocale& locale, | |
| 742 UBool& isAvailable, UErrorCode& status
); | |
| 743 | |
| 744 #if !UCONFIG_NO_SERVICE | |
| 745 /** | |
| 746 * Register a new Collator. The collator will be adopted. | |
| 747 * @param toAdopt the Collator instance to be adopted | |
| 748 * @param locale the locale with which the collator will be associated | |
| 749 * @param status the in/out status code, no special meanings are assigned | |
| 750 * @return a registry key that can be used to unregister this collator | |
| 751 * @stable ICU 2.6 | |
| 752 */ | |
| 753 static URegistryKey U_EXPORT2 registerInstance(Collator* toAdopt, const Loca
le& locale, UErrorCode& status); | |
| 754 | |
| 755 /** | |
| 756 * Register a new CollatorFactory. The factory will be adopted. | |
| 757 * @param toAdopt the CollatorFactory instance to be adopted | |
| 758 * @param status the in/out status code, no special meanings are assigned | |
| 759 * @return a registry key that can be used to unregister this collator | |
| 760 * @stable ICU 2.6 | |
| 761 */ | |
| 762 static URegistryKey U_EXPORT2 registerFactory(CollatorFactory* toAdopt, UErr
orCode& status); | |
| 763 | |
| 764 /** | |
| 765 * Unregister a previously-registered Collator or CollatorFactory | |
| 766 * using the key returned from the register call. Key becomes | |
| 767 * invalid after a successful call and should not be used again. | |
| 768 * The object corresponding to the key will be deleted. | |
| 769 * @param key the registry key returned by a previous call to registerInstan
ce | |
| 770 * @param status the in/out status code, no special meanings are assigned | |
| 771 * @return TRUE if the collator for the key was successfully unregistered | |
| 772 * @stable ICU 2.6 | |
| 773 */ | |
| 774 static UBool U_EXPORT2 unregister(URegistryKey key, UErrorCode& status); | |
| 775 #endif /* UCONFIG_NO_SERVICE */ | |
| 776 | |
| 777 /** | |
| 778 * Gets the version information for a Collator. | |
| 779 * @param info the version # information, the result will be filled in | |
| 780 * @stable ICU 2.0 | |
| 781 */ | |
| 782 virtual void getVersion(UVersionInfo info) const = 0; | |
| 783 | |
| 784 /** | |
| 785 * Returns a unique class ID POLYMORPHICALLY. Pure virtual method. | |
| 786 * This method is to implement a simple version of RTTI, since not all C++ | |
| 787 * compilers support genuine RTTI. Polymorphic operator==() and clone() | |
| 788 * methods call this method. | |
| 789 * @return The class ID for this object. All objects of a given class have | |
| 790 * the same class ID. Objects of other classes have different class | |
| 791 * IDs. | |
| 792 * @stable ICU 2.0 | |
| 793 */ | |
| 794 virtual UClassID getDynamicClassID(void) const = 0; | |
| 795 | |
| 796 /** | |
| 797 * Universal attribute setter | |
| 798 * @param attr attribute type | |
| 799 * @param value attribute value | |
| 800 * @param status to indicate whether the operation went on smoothly or | |
| 801 * there were errors | |
| 802 * @stable ICU 2.2 | |
| 803 */ | |
| 804 virtual void setAttribute(UColAttribute attr, UColAttributeValue value, | |
| 805 UErrorCode &status) = 0; | |
| 806 | |
| 807 /** | |
| 808 * Universal attribute getter | |
| 809 * @param attr attribute type | |
| 810 * @param status to indicate whether the operation went on smoothly or | |
| 811 * there were errors | |
| 812 * @return attribute value | |
| 813 * @stable ICU 2.2 | |
| 814 */ | |
| 815 virtual UColAttributeValue getAttribute(UColAttribute attr, | |
| 816 UErrorCode &status) = 0; | |
| 817 | |
| 818 /** | |
| 819 * Sets the variable top to a collation element value of a string supplied. | |
| 820 * @param varTop one or more (if contraction) UChars to which the variable t
op should be set | |
| 821 * @param len length of variable top string. If -1 it is considered to be ze
ro terminated. | |
| 822 * @param status error code. If error code is set, the return value is undef
ined. Errors set by this function are: <br> | |
| 823 * U_CE_NOT_FOUND_ERROR if more than one character was passed and there i
s no such a contraction<br> | |
| 824 * U_PRIMARY_TOO_LONG_ERROR if the primary for the variable top has more
than two bytes | |
| 825 * @return a 32 bit value containing the value of the variable top in upper
16 bits. Lower 16 bits are undefined | |
| 826 * @stable ICU 2.0 | |
| 827 */ | |
| 828 virtual uint32_t setVariableTop(const UChar *varTop, int32_t len, UErrorCode
&status) = 0; | |
| 829 | |
| 830 /** | |
| 831 * Sets the variable top to a collation element value of a string supplied. | |
| 832 * @param varTop an UnicodeString size 1 or more (if contraction) of UChars
to which the variable top should be set | |
| 833 * @param status error code. If error code is set, the return value is undef
ined. Errors set by this function are: <br> | |
| 834 * U_CE_NOT_FOUND_ERROR if more than one character was passed and there i
s no such a contraction<br> | |
| 835 * U_PRIMARY_TOO_LONG_ERROR if the primary for the variable top has more
than two bytes | |
| 836 * @return a 32 bit value containing the value of the variable top in upper
16 bits. Lower 16 bits are undefined | |
| 837 * @stable ICU 2.0 | |
| 838 */ | |
| 839 virtual uint32_t setVariableTop(const UnicodeString varTop, UErrorCode &stat
us) = 0; | |
| 840 | |
| 841 /** | |
| 842 * Sets the variable top to a collation element value supplied. Variable top
is set to the upper 16 bits. | |
| 843 * Lower 16 bits are ignored. | |
| 844 * @param varTop CE value, as returned by setVariableTop or ucol)getVariable
Top | |
| 845 * @param status error code (not changed by function) | |
| 846 * @stable ICU 2.0 | |
| 847 */ | |
| 848 virtual void setVariableTop(const uint32_t varTop, UErrorCode &status) = 0; | |
| 849 | |
| 850 /** | |
| 851 * Gets the variable top value of a Collator. | |
| 852 * Lower 16 bits are undefined and should be ignored. | |
| 853 * @param status error code (not changed by function). If error code is set,
the return value is undefined. | |
| 854 * @stable ICU 2.0 | |
| 855 */ | |
| 856 virtual uint32_t getVariableTop(UErrorCode &status) const = 0; | |
| 857 | |
| 858 /** | |
| 859 * Get an UnicodeSet that contains all the characters and sequences | |
| 860 * tailored in this collator. | |
| 861 * @param status error code of the operation | |
| 862 * @return a pointer to a UnicodeSet object containing all the | |
| 863 * code points and sequences that may sort differently than | |
| 864 * in the UCA. The object must be disposed of by using delete | |
| 865 * @stable ICU 2.4 | |
| 866 */ | |
| 867 virtual UnicodeSet *getTailoredSet(UErrorCode &status) const; | |
| 868 | |
| 869 | |
| 870 /** | |
| 871 * Thread safe cloning operation | |
| 872 * @return pointer to the new clone, user should remove it. | |
| 873 * @stable ICU 2.2 | |
| 874 */ | |
| 875 virtual Collator* safeClone(void) = 0; | |
| 876 | |
| 877 /** | |
| 878 * Get the sort key as an array of bytes from an UnicodeString. | |
| 879 * Sort key byte arrays are zero-terminated and can be compared using | |
| 880 * strcmp(). | |
| 881 * @param source string to be processed. | |
| 882 * @param result buffer to store result in. If NULL, number of bytes needed | |
| 883 * will be returned. | |
| 884 * @param resultLength length of the result buffer. If if not enough the | |
| 885 * buffer will be filled to capacity. | |
| 886 * @return Number of bytes needed for storing the sort key | |
| 887 * @stable ICU 2.2 | |
| 888 */ | |
| 889 virtual int32_t getSortKey(const UnicodeString& source, | |
| 890 uint8_t* result, | |
| 891 int32_t resultLength) const = 0; | |
| 892 | |
| 893 /** | |
| 894 * Get the sort key as an array of bytes from an UChar buffer. | |
| 895 * Sort key byte arrays are zero-terminated and can be compared using | |
| 896 * strcmp(). | |
| 897 * @param source string to be processed. | |
| 898 * @param sourceLength length of string to be processed. | |
| 899 * If -1, the string is 0 terminated and length will be decided by th
e | |
| 900 * function. | |
| 901 * @param result buffer to store result in. If NULL, number of bytes needed | |
| 902 * will be returned. | |
| 903 * @param resultLength length of the result buffer. If if not enough the | |
| 904 * buffer will be filled to capacity. | |
| 905 * @return Number of bytes needed for storing the sort key | |
| 906 * @stable ICU 2.2 | |
| 907 */ | |
| 908 virtual int32_t getSortKey(const UChar*source, int32_t sourceLength, | |
| 909 uint8_t*result, int32_t resultLength) const = 0; | |
| 910 | |
| 911 /** | |
| 912 * Produce a bound for a given sortkey and a number of levels. | |
| 913 * Return value is always the number of bytes needed, regardless of | |
| 914 * whether the result buffer was big enough or even valid.<br> | |
| 915 * Resulting bounds can be used to produce a range of strings that are | |
| 916 * between upper and lower bounds. For example, if bounds are produced | |
| 917 * for a sortkey of string "smith", strings between upper and lower | |
| 918 * bounds with one level would include "Smith", "SMITH", "sMiTh".<br> | |
| 919 * There are two upper bounds that can be produced. If UCOL_BOUND_UPPER | |
| 920 * is produced, strings matched would be as above. However, if bound | |
| 921 * produced using UCOL_BOUND_UPPER_LONG is used, the above example will | |
| 922 * also match "Smithsonian" and similar.<br> | |
| 923 * For more on usage, see example in cintltst/capitst.c in procedure | |
| 924 * TestBounds. | |
| 925 * Sort keys may be compared using <TT>strcmp</TT>. | |
| 926 * @param source The source sortkey. | |
| 927 * @param sourceLength The length of source, or -1 if null-terminated. | |
| 928 * (If an unmodified sortkey is passed, it is always nul
l | |
| 929 * terminated). | |
| 930 * @param boundType Type of bound required. It can be UCOL_BOUND_LOWER, whic
h | |
| 931 * produces a lower inclusive bound, UCOL_BOUND_UPPER, that | |
| 932 * produces upper bound that matches strings of the same le
ngth | |
| 933 * or UCOL_BOUND_UPPER_LONG that matches strings that have
the | |
| 934 * same starting substring as the source string. | |
| 935 * @param noOfLevels Number of levels required in the resulting bound (for
most | |
| 936 * uses, the recommended value is 1). See users guide for | |
| 937 * explanation on number of levels a sortkey can have. | |
| 938 * @param result A pointer to a buffer to receive the resulting sortkey. | |
| 939 * @param resultLength The maximum size of result. | |
| 940 * @param status Used for returning error code if something went wrong. If t
he | |
| 941 * number of levels requested is higher than the number of lev
els | |
| 942 * in the source key, a warning (U_SORT_KEY_TOO_SHORT_WARNING)
is | |
| 943 * issued. | |
| 944 * @return The size needed to fully store the bound. | |
| 945 * @see ucol_keyHashCode | |
| 946 * @stable ICU 2.1 | |
| 947 */ | |
| 948 static int32_t U_EXPORT2 getBound(const uint8_t *source, | |
| 949 int32_t sourceLength, | |
| 950 UColBoundMode boundType, | |
| 951 uint32_t noOfLevels, | |
| 952 uint8_t *result, | |
| 953 int32_t resultLength, | |
| 954 UErrorCode &status); | |
| 955 | |
| 956 | |
| 957 protected: | |
| 958 | |
| 959 // Collator protected constructors ------------------------------------- | |
| 960 | |
| 961 /** | |
| 962 * Default constructor. | |
| 963 * Constructor is different from the old default Collator constructor. | |
| 964 * The task for determing the default collation strength and normalization | |
| 965 * mode is left to the child class. | |
| 966 * @stable ICU 2.0 | |
| 967 */ | |
| 968 Collator(); | |
| 969 | |
| 970 /** | |
| 971 * Constructor. | |
| 972 * Empty constructor, does not handle the arguments. | |
| 973 * This constructor is done for backward compatibility with 1.7 and 1.8. | |
| 974 * The task for handling the argument collation strength and normalization | |
| 975 * mode is left to the child class. | |
| 976 * @param collationStrength collation strength | |
| 977 * @param decompositionMode | |
| 978 * @deprecated ICU 2.4. Subclasses should use the default constructor | |
| 979 * instead and handle the strength and normalization mode themselves. | |
| 980 */ | |
| 981 Collator(UCollationStrength collationStrength, | |
| 982 UNormalizationMode decompositionMode); | |
| 983 | |
| 984 /** | |
| 985 * Copy constructor. | |
| 986 * @param other Collator object to be copied from | |
| 987 * @stable ICU 2.0 | |
| 988 */ | |
| 989 Collator(const Collator& other); | |
| 990 | |
| 991 // Collator protected methods ----------------------------------------- | |
| 992 | |
| 993 | |
| 994 /** | |
| 995 * Used internally by registraton to define the requested and valid locales. | |
| 996 * @param requestedLocale the requested locale | |
| 997 * @param validLocale the valid locale | |
| 998 * @param actualLocale the actual locale | |
| 999 * @internal | |
| 1000 */ | |
| 1001 virtual void setLocales(const Locale& requestedLocale, const Locale& validLo
cale, const Locale& actualLocale); | |
| 1002 | |
| 1003 public: | |
| 1004 #if !UCONFIG_NO_SERVICE | |
| 1005 /** | |
| 1006 * used only by ucol_open, not for public use | |
| 1007 * @internal | |
| 1008 */ | |
| 1009 static UCollator* createUCollator(const char* loc, UErrorCode* status); | |
| 1010 #endif | |
| 1011 private: | |
| 1012 /** | |
| 1013 * Assignment operator. Private for now. | |
| 1014 * @internal | |
| 1015 */ | |
| 1016 Collator& operator=(const Collator& other); | |
| 1017 | |
| 1018 friend class CFactory; | |
| 1019 friend class SimpleCFactory; | |
| 1020 friend class ICUCollatorFactory; | |
| 1021 friend class ICUCollatorService; | |
| 1022 static Collator* makeInstance(const Locale& desiredLocale, | |
| 1023 UErrorCode& status); | |
| 1024 | |
| 1025 // Collator private data members --------------------------------------- | |
| 1026 | |
| 1027 /* | |
| 1028 synwee : removed as attributes to be handled by child class | |
| 1029 UCollationStrength strength; | |
| 1030 Normalizer::EMode decmp; | |
| 1031 */ | |
| 1032 /* This is useless information */ | |
| 1033 /* static const UVersionInfo fVersion;*/ | |
| 1034 }; | |
| 1035 | |
| 1036 #if !UCONFIG_NO_SERVICE | |
| 1037 /** | |
| 1038 * A factory, used with registerFactory, the creates multiple collators and prov
ides | |
| 1039 * display names for them. A factory supports some number of locales-- these ar
e the | |
| 1040 * locales for which it can create collators. The factory can be visible, in wh
ich | |
| 1041 * case the supported locales will be enumerated by getAvailableLocales, or invi
sible, | |
| 1042 * in which they are not. Invisible locales are still supported, they are just
not | |
| 1043 * listed by getAvailableLocales. | |
| 1044 * <p> | |
| 1045 * If standard locale display names are sufficient, Collator instances can | |
| 1046 * be registered using registerInstance instead.</p> | |
| 1047 * <p> | |
| 1048 * Note: if the collators are to be used from C APIs, they must be instances | |
| 1049 * of RuleBasedCollator.</p> | |
| 1050 * | |
| 1051 * @stable ICU 2.6 | |
| 1052 */ | |
| 1053 class U_I18N_API CollatorFactory : public UObject { | |
| 1054 public: | |
| 1055 | |
| 1056 /** | |
| 1057 * Destructor | |
| 1058 * @stable ICU 3.0 | |
| 1059 */ | |
| 1060 virtual ~CollatorFactory(); | |
| 1061 | |
| 1062 /** | |
| 1063 * Return true if this factory is visible. Default is true. | |
| 1064 * If not visible, the locales supported by this factory will not | |
| 1065 * be listed by getAvailableLocales. | |
| 1066 * @return true if the factory is visible. | |
| 1067 * @stable ICU 2.6 | |
| 1068 */ | |
| 1069 virtual UBool visible(void) const; | |
| 1070 | |
| 1071 /** | |
| 1072 * Return a collator for the provided locale. If the locale | |
| 1073 * is not supported, return NULL. | |
| 1074 * @param loc the locale identifying the collator to be created. | |
| 1075 * @return a new collator if the locale is supported, otherwise NULL. | |
| 1076 * @stable ICU 2.6 | |
| 1077 */ | |
| 1078 virtual Collator* createCollator(const Locale& loc) = 0; | |
| 1079 | |
| 1080 /** | |
| 1081 * Return the name of the collator for the objectLocale, localized for the d
isplayLocale. | |
| 1082 * If objectLocale is not supported, or the factory is not visible, set the
result string | |
| 1083 * to bogus. | |
| 1084 * @param objectLocale the locale identifying the collator | |
| 1085 * @param displayLocale the locale for which the display name of the collato
r should be localized | |
| 1086 * @param result an output parameter for the display name, set to bogus if n
ot supported. | |
| 1087 * @return the display name | |
| 1088 * @stable ICU 2.6 | |
| 1089 */ | |
| 1090 virtual UnicodeString& getDisplayName(const Locale& objectLocale, | |
| 1091 const Locale& displayLocale, | |
| 1092 UnicodeString& result); | |
| 1093 | |
| 1094 /** | |
| 1095 * Return an array of all the locale names directly supported by this factor
y. | |
| 1096 * The number of names is returned in count. This array is owned by the fac
tory. | |
| 1097 * Its contents must never change. | |
| 1098 * @param count output parameter for the number of locales supported by the
factory | |
| 1099 * @param status the in/out error code | |
| 1100 * @return a pointer to an array of count UnicodeStrings. | |
| 1101 * @stable ICU 2.6 | |
| 1102 */ | |
| 1103 virtual const UnicodeString * getSupportedIDs(int32_t &count, UErrorCode& st
atus) = 0; | |
| 1104 }; | |
| 1105 #endif /* UCONFIG_NO_SERVICE */ | |
| 1106 | |
| 1107 // Collator inline methods ----------------------------------------------- | |
| 1108 | |
| 1109 U_NAMESPACE_END | |
| 1110 | |
| 1111 #endif /* #if !UCONFIG_NO_COLLATION */ | |
| 1112 | |
| 1113 #endif | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 19417002:
Move ICU header part 2 (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/icu46/