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| 1 /* | |
| 2 ******************************************************************************* | |
| 3 * Copyright (c) 1996-2010, International Business Machines Corporation and other
s. | |
| 4 * All Rights Reserved. | |
| 5 ******************************************************************************* | |
| 6 */ | |
| 7 | |
| 8 #ifndef UCOL_H | |
| 9 #define UCOL_H | |
| 10 | |
| 11 #include "unicode/utypes.h" | |
| 12 | |
| 13 #if !UCONFIG_NO_COLLATION | |
| 14 | |
| 15 #include "unicode/unorm.h" | |
| 16 #include "unicode/localpointer.h" | |
| 17 #include "unicode/parseerr.h" | |
| 18 #include "unicode/uloc.h" | |
| 19 #include "unicode/uset.h" | |
| 20 | |
| 21 /** | |
| 22 * \file | |
| 23 * \brief C API: Collator | |
| 24 * | |
| 25 * <h2> Collator C API </h2> | |
| 26 * | |
| 27 * The C API for Collator performs locale-sensitive | |
| 28 * string comparison. You use this service to build | |
| 29 * searching and sorting routines for natural language text. | |
| 30 * <em>Important: </em>The ICU collation service has been reimplemented | |
| 31 * in order to achieve better performance and UCA compliance. | |
| 32 * For details, see the | |
| 33 * <a href="http://source.icu-project.org/repos/icu/icuhtml/trunk/design/collati
on/ICU_collation_design.htm"> | |
| 34 * collation design document</a>. | |
| 35 * <p> | |
| 36 * For more information about the collation service see | |
| 37 * <a href="http://icu-project.org/userguide/Collate_Intro.html">the users guide
</a>. | |
| 38 * <p> | |
| 39 * Collation service provides correct sorting orders for most locales supported
in ICU. | |
| 40 * If specific data for a locale is not available, the orders eventually falls b
ack | |
| 41 * to the <a href="http://www.unicode.org/unicode/reports/tr10/">UCA sort order<
/a>. | |
| 42 * <p> | |
| 43 * Sort ordering may be customized by providing your own set of rules. For more
on | |
| 44 * this subject see the | |
| 45 * <a href="http://icu-project.org/userguide/Collate_Customization.html"> | |
| 46 * Collation customization</a> section of the users guide. | |
| 47 * <p> | |
| 48 * @see UCollationResult | |
| 49 * @see UNormalizationMode | |
| 50 * @see UCollationStrength | |
| 51 * @see UCollationElements | |
| 52 */ | |
| 53 | |
| 54 /** A collator. | |
| 55 * For usage in C programs. | |
| 56 */ | |
| 57 struct UCollator; | |
| 58 /** structure representing a collator object instance | |
| 59 * @stable ICU 2.0 | |
| 60 */ | |
| 61 typedef struct UCollator UCollator; | |
| 62 | |
| 63 | |
| 64 /** | |
| 65 * UCOL_LESS is returned if source string is compared to be less than target | |
| 66 * string in the u_strcoll() method. | |
| 67 * UCOL_EQUAL is returned if source string is compared to be equal to target | |
| 68 * string in the u_strcoll() method. | |
| 69 * UCOL_GREATER is returned if source string is compared to be greater than | |
| 70 * target string in the u_strcoll() method. | |
| 71 * @see u_strcoll() | |
| 72 * <p> | |
| 73 * Possible values for a comparison result | |
| 74 * @stable ICU 2.0 | |
| 75 */ | |
| 76 typedef enum { | |
| 77 /** string a == string b */ | |
| 78 UCOL_EQUAL = 0, | |
| 79 /** string a > string b */ | |
| 80 UCOL_GREATER = 1, | |
| 81 /** string a < string b */ | |
| 82 UCOL_LESS = -1 | |
| 83 } UCollationResult ; | |
| 84 | |
| 85 | |
| 86 /** Enum containing attribute values for controling collation behavior. | |
| 87 * Here are all the allowable values. Not every attribute can take every value.
The only | |
| 88 * universal value is UCOL_DEFAULT, which resets the attribute value to the pred
efined | |
| 89 * value for that locale | |
| 90 * @stable ICU 2.0 | |
| 91 */ | |
| 92 typedef enum { | |
| 93 /** accepted by most attributes */ | |
| 94 UCOL_DEFAULT = -1, | |
| 95 | |
| 96 /** Primary collation strength */ | |
| 97 UCOL_PRIMARY = 0, | |
| 98 /** Secondary collation strength */ | |
| 99 UCOL_SECONDARY = 1, | |
| 100 /** Tertiary collation strength */ | |
| 101 UCOL_TERTIARY = 2, | |
| 102 /** Default collation strength */ | |
| 103 UCOL_DEFAULT_STRENGTH = UCOL_TERTIARY, | |
| 104 UCOL_CE_STRENGTH_LIMIT, | |
| 105 /** Quaternary collation strength */ | |
| 106 UCOL_QUATERNARY=3, | |
| 107 /** Identical collation strength */ | |
| 108 UCOL_IDENTICAL=15, | |
| 109 UCOL_STRENGTH_LIMIT, | |
| 110 | |
| 111 /** Turn the feature off - works for UCOL_FRENCH_COLLATION, | |
| 112 UCOL_CASE_LEVEL, UCOL_HIRAGANA_QUATERNARY_MODE | |
| 113 & UCOL_DECOMPOSITION_MODE*/ | |
| 114 UCOL_OFF = 16, | |
| 115 /** Turn the feature on - works for UCOL_FRENCH_COLLATION, | |
| 116 UCOL_CASE_LEVEL, UCOL_HIRAGANA_QUATERNARY_MODE | |
| 117 & UCOL_DECOMPOSITION_MODE*/ | |
| 118 UCOL_ON = 17, | |
| 119 | |
| 120 /** Valid for UCOL_ALTERNATE_HANDLING. Alternate handling will be shifted */ | |
| 121 UCOL_SHIFTED = 20, | |
| 122 /** Valid for UCOL_ALTERNATE_HANDLING. Alternate handling will be non ignorabl
e */ | |
| 123 UCOL_NON_IGNORABLE = 21, | |
| 124 | |
| 125 /** Valid for UCOL_CASE_FIRST - | |
| 126 lower case sorts before upper case */ | |
| 127 UCOL_LOWER_FIRST = 24, | |
| 128 /** upper case sorts before lower case */ | |
| 129 UCOL_UPPER_FIRST = 25, | |
| 130 | |
| 131 UCOL_ATTRIBUTE_VALUE_COUNT | |
| 132 | |
| 133 } UColAttributeValue; | |
| 134 | |
| 135 /** Enum containing the codes for reordering segments of the collation table tha
t are not script | |
| 136 * codes. These reordering codes are to be used in conjunction with the script
codes. | |
| 137 * @internal | |
| 138 */ | |
| 139 typedef enum { | |
| 140 UCOL_REORDER_CODE_SPACE = 0x1000, | |
| 141 UCOL_REORDER_CODE_FIRST = UCOL_REORDER_CODE_SPACE, | |
| 142 UCOL_REORDER_CODE_PUNCTUATION = 0x1001, | |
| 143 UCOL_REORDER_CODE_SYMBOL = 0x1002, | |
| 144 UCOL_REORDER_CODE_CURRENCY = 0x1003, | |
| 145 UCOL_REORDER_CODE_DIGIT = 0x1004, | |
| 146 UCOL_REORDER_CODE_LIMIT = 0x1005 | |
| 147 } UColReorderCode; | |
| 148 | |
| 149 /** | |
| 150 * Base letter represents a primary difference. Set comparison | |
| 151 * level to UCOL_PRIMARY to ignore secondary and tertiary differences. | |
| 152 * Use this to set the strength of a Collator object. | |
| 153 * Example of primary difference, "abc" < "abd" | |
| 154 * | |
| 155 * Diacritical differences on the same base letter represent a secondary | |
| 156 * difference. Set comparison level to UCOL_SECONDARY to ignore tertiary | |
| 157 * differences. Use this to set the strength of a Collator object. | |
| 158 * Example of secondary difference, "ä" >> "a". | |
| 159 * | |
| 160 * Uppercase and lowercase versions of the same character represents a | |
| 161 * tertiary difference. Set comparison level to UCOL_TERTIARY to include | |
| 162 * all comparison differences. Use this to set the strength of a Collator | |
| 163 * object. | |
| 164 * Example of tertiary difference, "abc" <<< "ABC". | |
| 165 * | |
| 166 * Two characters are considered "identical" when they have the same | |
| 167 * unicode spellings. UCOL_IDENTICAL. | |
| 168 * For example, "ä" == "ä". | |
| 169 * | |
| 170 * UCollationStrength is also used to determine the strength of sort keys | |
| 171 * generated from UCollator objects | |
| 172 * These values can be now found in the UColAttributeValue enum. | |
| 173 * @stable ICU 2.0 | |
| 174 **/ | |
| 175 typedef UColAttributeValue UCollationStrength; | |
| 176 | |
| 177 /** Attributes that collation service understands. All the attributes can take U
COL_DEFAULT | |
| 178 * value, as well as the values specific to each one. | |
| 179 * @stable ICU 2.0 | |
| 180 */ | |
| 181 typedef enum { | |
| 182 /** Attribute for direction of secondary weights - used in French. | |
| 183 * Acceptable values are UCOL_ON, which results in secondary weights | |
| 184 * being considered backwards and UCOL_OFF which treats secondary | |
| 185 * weights in the order they appear.*/ | |
| 186 UCOL_FRENCH_COLLATION, | |
| 187 /** Attribute for handling variable elements. | |
| 188 * Acceptable values are UCOL_NON_IGNORABLE (default) | |
| 189 * which treats all the codepoints with non-ignorable | |
| 190 * primary weights in the same way, | |
| 191 * and UCOL_SHIFTED which causes codepoints with primary | |
| 192 * weights that are equal or below the variable top value | |
| 193 * to be ignored on primary level and moved to the quaternary | |
| 194 * level.*/ | |
| 195 UCOL_ALTERNATE_HANDLING, | |
| 196 /** Controls the ordering of upper and lower case letters. | |
| 197 * Acceptable values are UCOL_OFF (default), which orders | |
| 198 * upper and lower case letters in accordance to their tertiary | |
| 199 * weights, UCOL_UPPER_FIRST which forces upper case letters to | |
| 200 * sort before lower case letters, and UCOL_LOWER_FIRST which does | |
| 201 * the opposite. */ | |
| 202 UCOL_CASE_FIRST, | |
| 203 /** Controls whether an extra case level (positioned before the third | |
| 204 * level) is generated or not. Acceptable values are UCOL_OFF (default), | |
| 205 * when case level is not generated, and UCOL_ON which causes the case | |
| 206 * level to be generated. Contents of the case level are affected by | |
| 207 * the value of UCOL_CASE_FIRST attribute. A simple way to ignore | |
| 208 * accent differences in a string is to set the strength to UCOL_PRIMARY | |
| 209 * and enable case level. */ | |
| 210 UCOL_CASE_LEVEL, | |
| 211 /** Controls whether the normalization check and necessary normalizations | |
| 212 * are performed. When set to UCOL_OFF (default) no normalization check | |
| 213 * is performed. The correctness of the result is guaranteed only if the | |
| 214 * input data is in so-called FCD form (see users manual for more info). | |
| 215 * When set to UCOL_ON, an incremental check is performed to see whether | |
| 216 * the input data is in the FCD form. If the data is not in the FCD form, | |
| 217 * incremental NFD normalization is performed. */ | |
| 218 UCOL_NORMALIZATION_MODE, | |
| 219 /** An alias for UCOL_NORMALIZATION_MODE attribute */ | |
| 220 UCOL_DECOMPOSITION_MODE = UCOL_NORMALIZATION_MODE, | |
| 221 /** The strength attribute. Can be either UCOL_PRIMARY, UCOL_SECONDARY, | |
| 222 * UCOL_TERTIARY, UCOL_QUATERNARY or UCOL_IDENTICAL. The usual strength | |
| 223 * for most locales (except Japanese) is tertiary. Quaternary strength | |
| 224 * is useful when combined with shifted setting for alternate handling | |
| 225 * attribute and for JIS x 4061 collation, when it is used to distinguish | |
| 226 * between Katakana and Hiragana (this is achieved by setting the | |
| 227 * UCOL_HIRAGANA_QUATERNARY mode to on. Otherwise, quaternary level | |
| 228 * is affected only by the number of non ignorable code points in | |
| 229 * the string. Identical strength is rarely useful, as it amounts | |
| 230 * to codepoints of the NFD form of the string. */ | |
| 231 UCOL_STRENGTH, | |
| 232 /** When turned on, this attribute positions Hiragana before all | |
| 233 * non-ignorables on quaternary level This is a sneaky way to produce JIS | |
| 234 * sort order */ | |
| 235 UCOL_HIRAGANA_QUATERNARY_MODE, | |
| 236 /** When turned on, this attribute generates a collation key | |
| 237 * for the numeric value of substrings of digits. | |
| 238 * This is a way to get '100' to sort AFTER '2'. Note that the longest | |
| 239 * digit substring that can be treated as a single collation element is | |
| 240 * 254 digits (not counting leading zeros). If a digit substring is | |
| 241 * longer than that, the digits beyond the limit will be treated as a | |
| 242 * separate digit substring associated with a separate collation element. *
/ | |
| 243 UCOL_NUMERIC_COLLATION, | |
| 244 UCOL_ATTRIBUTE_COUNT | |
| 245 } UColAttribute; | |
| 246 | |
| 247 /** Options for retrieving the rule string | |
| 248 * @stable ICU 2.0 | |
| 249 */ | |
| 250 typedef enum { | |
| 251 /** Retrieve tailoring only */ | |
| 252 UCOL_TAILORING_ONLY, | |
| 253 /** Retrieve UCA rules and tailoring */ | |
| 254 UCOL_FULL_RULES | |
| 255 } UColRuleOption ; | |
| 256 | |
| 257 /** | |
| 258 * Open a UCollator for comparing strings. | |
| 259 * The UCollator pointer is used in all the calls to the Collation | |
| 260 * service. After finished, collator must be disposed of by calling | |
| 261 * {@link #ucol_close }. | |
| 262 * @param loc The locale containing the required collation rules. | |
| 263 * Special values for locales can be passed in - | |
| 264 * if NULL is passed for the locale, the default locale | |
| 265 * collation rules will be used. If empty string ("") or | |
| 266 * "root" are passed, UCA rules will be used. | |
| 267 * @param status A pointer to an UErrorCode to receive any errors | |
| 268 * @return A pointer to a UCollator, or 0 if an error occurred. | |
| 269 * @see ucol_openRules | |
| 270 * @see ucol_safeClone | |
| 271 * @see ucol_close | |
| 272 * @stable ICU 2.0 | |
| 273 */ | |
| 274 U_STABLE UCollator* U_EXPORT2 | |
| 275 ucol_open(const char *loc, UErrorCode *status); | |
| 276 | |
| 277 /** | |
| 278 * Produce an UCollator instance according to the rules supplied. | |
| 279 * The rules are used to change the default ordering, defined in the | |
| 280 * UCA in a process called tailoring. The resulting UCollator pointer | |
| 281 * can be used in the same way as the one obtained by {@link #ucol_strcoll }. | |
| 282 * @param rules A string describing the collation rules. For the syntax | |
| 283 * of the rules please see users guide. | |
| 284 * @param rulesLength The length of rules, or -1 if null-terminated. | |
| 285 * @param normalizationMode The normalization mode: One of | |
| 286 * UCOL_OFF (expect the text to not need normalization), | |
| 287 * UCOL_ON (normalize), or | |
| 288 * UCOL_DEFAULT (set the mode according to the rules) | |
| 289 * @param strength The default collation strength; one of UCOL_PRIMARY, UCOL_SEC
ONDARY, | |
| 290 * UCOL_TERTIARY, UCOL_IDENTICAL,UCOL_DEFAULT_STRENGTH - can be also set in the
rules. | |
| 291 * @param parseError A pointer to UParseError to recieve information about erro
rs | |
| 292 * occurred during parsing. This argument can currently be se
t | |
| 293 * to NULL, but at users own risk. Please provide a real stru
cture. | |
| 294 * @param status A pointer to an UErrorCode to receive any errors | |
| 295 * @return A pointer to a UCollator. It is not guaranteed that NULL be returned
in case | |
| 296 * of error - please use status argument to check for errors. | |
| 297 * @see ucol_open | |
| 298 * @see ucol_safeClone | |
| 299 * @see ucol_close | |
| 300 * @stable ICU 2.0 | |
| 301 */ | |
| 302 U_STABLE UCollator* U_EXPORT2 | |
| 303 ucol_openRules( const UChar *rules, | |
| 304 int32_t rulesLength, | |
| 305 UColAttributeValue normalizationMode, | |
| 306 UCollationStrength strength, | |
| 307 UParseError *parseError, | |
| 308 UErrorCode *status); | |
| 309 | |
| 310 /** | |
| 311 * Open a collator defined by a short form string. | |
| 312 * The structure and the syntax of the string is defined in the "Naming collator
s" | |
| 313 * section of the users guide: | |
| 314 * http://icu-project.org/userguide/Collate_Concepts.html#Naming_Collators | |
| 315 * Attributes are overriden by the subsequent attributes. So, for "S2_S3", final | |
| 316 * strength will be 3. 3066bis locale overrides individual locale parts. | |
| 317 * The call to this function is equivalent to a call to ucol_open, followed by a
| |
| 318 * series of calls to ucol_setAttribute and ucol_setVariableTop. | |
| 319 * @param definition A short string containing a locale and a set of attributes.
| |
| 320 * Attributes not explicitly mentioned are left at the default | |
| 321 * state for a locale. | |
| 322 * @param parseError if not NULL, structure that will get filled with error's pr
e | |
| 323 * and post context in case of error. | |
| 324 * @param forceDefaults if FALSE, the settings that are the same as the collator
| |
| 325 * default settings will not be applied (for example, setting | |
| 326 * French secondary on a French collator would not be executed
). | |
| 327 * If TRUE, all the settings will be applied regardless of the
| |
| 328 * collator default value. If the definition | |
| 329 * strings are to be cached, should be set to FALSE. | |
| 330 * @param status Error code. Apart from regular error conditions connected t
o | |
| 331 * instantiating collators (like out of memory or similar), th
is | |
| 332 * API will return an error if an invalid attribute or attribu
te/value | |
| 333 * combination is specified. | |
| 334 * @return A pointer to a UCollator or 0 if an error occured (includin
g an | |
| 335 * invalid attribute). | |
| 336 * @see ucol_open | |
| 337 * @see ucol_setAttribute | |
| 338 * @see ucol_setVariableTop | |
| 339 * @see ucol_getShortDefinitionString | |
| 340 * @see ucol_normalizeShortDefinitionString | |
| 341 * @stable ICU 3.0 | |
| 342 * | |
| 343 */ | |
| 344 U_STABLE UCollator* U_EXPORT2 | |
| 345 ucol_openFromShortString( const char *definition, | |
| 346 UBool forceDefaults, | |
| 347 UParseError *parseError, | |
| 348 UErrorCode *status); | |
| 349 | |
| 350 /** | |
| 351 * Get a set containing the contractions defined by the collator. The set includ
es | |
| 352 * both the UCA contractions and the contractions defined by the collator. This
set | |
| 353 * will contain only strings. If a tailoring explicitly suppresses contractions
from | |
| 354 * the UCA (like Russian), removed contractions will not be in the resulting set
. | |
| 355 * @param coll collator | |
| 356 * @param conts the set to hold the result. It gets emptied before | |
| 357 * contractions are added. | |
| 358 * @param status to hold the error code | |
| 359 * @return the size of the contraction set | |
| 360 * | |
| 361 * @deprecated ICU 3.4, use ucol_getContractionsAndExpansions instead | |
| 362 */ | |
| 363 U_DEPRECATED int32_t U_EXPORT2 | |
| 364 ucol_getContractions( const UCollator *coll, | |
| 365 USet *conts, | |
| 366 UErrorCode *status); | |
| 367 | |
| 368 /** | |
| 369 * Get a set containing the expansions defined by the collator. The set includes | |
| 370 * both the UCA expansions and the expansions defined by the tailoring | |
| 371 * @param coll collator | |
| 372 * @param contractions if not NULL, the set to hold the contractions | |
| 373 * @param expansions if not NULL, the set to hold the expansions | |
| 374 * @param addPrefixes add the prefix contextual elements to contractions | |
| 375 * @param status to hold the error code | |
| 376 * | |
| 377 * @stable ICU 3.4 | |
| 378 */ | |
| 379 U_STABLE void U_EXPORT2 | |
| 380 ucol_getContractionsAndExpansions( const UCollator *coll, | |
| 381 USet *contractions, USet *expansions, | |
| 382 UBool addPrefixes, UErrorCode *status); | |
| 383 | |
| 384 /** | |
| 385 * Close a UCollator. | |
| 386 * Once closed, a UCollator should not be used. Every open collator should | |
| 387 * be closed. Otherwise, a memory leak will result. | |
| 388 * @param coll The UCollator to close. | |
| 389 * @see ucol_open | |
| 390 * @see ucol_openRules | |
| 391 * @see ucol_safeClone | |
| 392 * @stable ICU 2.0 | |
| 393 */ | |
| 394 U_STABLE void U_EXPORT2 | |
| 395 ucol_close(UCollator *coll); | |
| 396 | |
| 397 #if U_SHOW_CPLUSPLUS_API | |
| 398 | |
| 399 U_NAMESPACE_BEGIN | |
| 400 | |
| 401 /** | |
| 402 * \class LocalUCollatorPointer | |
| 403 * "Smart pointer" class, closes a UCollator via ucol_close(). | |
| 404 * For most methods see the LocalPointerBase base class. | |
| 405 * | |
| 406 * @see LocalPointerBase | |
| 407 * @see LocalPointer | |
| 408 * @stable ICU 4.4 | |
| 409 */ | |
| 410 U_DEFINE_LOCAL_OPEN_POINTER(LocalUCollatorPointer, UCollator, ucol_close); | |
| 411 | |
| 412 U_NAMESPACE_END | |
| 413 | |
| 414 #endif | |
| 415 | |
| 416 /** | |
| 417 * Compare two strings. | |
| 418 * The strings will be compared using the options already specified. | |
| 419 * @param coll The UCollator containing the comparison rules. | |
| 420 * @param source The source string. | |
| 421 * @param sourceLength The length of source, or -1 if null-terminated. | |
| 422 * @param target The target string. | |
| 423 * @param targetLength The length of target, or -1 if null-terminated. | |
| 424 * @return The result of comparing the strings; one of UCOL_EQUAL, | |
| 425 * UCOL_GREATER, UCOL_LESS | |
| 426 * @see ucol_greater | |
| 427 * @see ucol_greaterOrEqual | |
| 428 * @see ucol_equal | |
| 429 * @stable ICU 2.0 | |
| 430 */ | |
| 431 U_STABLE UCollationResult U_EXPORT2 | |
| 432 ucol_strcoll( const UCollator *coll, | |
| 433 const UChar *source, | |
| 434 int32_t sourceLength, | |
| 435 const UChar *target, | |
| 436 int32_t targetLength); | |
| 437 | |
| 438 /** | |
| 439 * Determine if one string is greater than another. | |
| 440 * This function is equivalent to {@link #ucol_strcoll } == UCOL_GREATER | |
| 441 * @param coll The UCollator containing the comparison rules. | |
| 442 * @param source The source string. | |
| 443 * @param sourceLength The length of source, or -1 if null-terminated. | |
| 444 * @param target The target string. | |
| 445 * @param targetLength The length of target, or -1 if null-terminated. | |
| 446 * @return TRUE if source is greater than target, FALSE otherwise. | |
| 447 * @see ucol_strcoll | |
| 448 * @see ucol_greaterOrEqual | |
| 449 * @see ucol_equal | |
| 450 * @stable ICU 2.0 | |
| 451 */ | |
| 452 U_STABLE UBool U_EXPORT2 | |
| 453 ucol_greater(const UCollator *coll, | |
| 454 const UChar *source, int32_t sourceLength, | |
| 455 const UChar *target, int32_t targetLength); | |
| 456 | |
| 457 /** | |
| 458 * Determine if one string is greater than or equal to another. | |
| 459 * This function is equivalent to {@link #ucol_strcoll } != UCOL_LESS | |
| 460 * @param coll The UCollator containing the comparison rules. | |
| 461 * @param source The source string. | |
| 462 * @param sourceLength The length of source, or -1 if null-terminated. | |
| 463 * @param target The target string. | |
| 464 * @param targetLength The length of target, or -1 if null-terminated. | |
| 465 * @return TRUE if source is greater than or equal to target, FALSE otherwise. | |
| 466 * @see ucol_strcoll | |
| 467 * @see ucol_greater | |
| 468 * @see ucol_equal | |
| 469 * @stable ICU 2.0 | |
| 470 */ | |
| 471 U_STABLE UBool U_EXPORT2 | |
| 472 ucol_greaterOrEqual(const UCollator *coll, | |
| 473 const UChar *source, int32_t sourceLength, | |
| 474 const UChar *target, int32_t targetLength); | |
| 475 | |
| 476 /** | |
| 477 * Compare two strings for equality. | |
| 478 * This function is equivalent to {@link #ucol_strcoll } == UCOL_EQUAL | |
| 479 * @param coll The UCollator containing the comparison rules. | |
| 480 * @param source The source string. | |
| 481 * @param sourceLength The length of source, or -1 if null-terminated. | |
| 482 * @param target The target string. | |
| 483 * @param targetLength The length of target, or -1 if null-terminated. | |
| 484 * @return TRUE if source is equal to target, FALSE otherwise | |
| 485 * @see ucol_strcoll | |
| 486 * @see ucol_greater | |
| 487 * @see ucol_greaterOrEqual | |
| 488 * @stable ICU 2.0 | |
| 489 */ | |
| 490 U_STABLE UBool U_EXPORT2 | |
| 491 ucol_equal(const UCollator *coll, | |
| 492 const UChar *source, int32_t sourceLength, | |
| 493 const UChar *target, int32_t targetLength); | |
| 494 | |
| 495 /** | |
| 496 * Compare two UTF-8 encoded trings. | |
| 497 * The strings will be compared using the options already specified. | |
| 498 * @param coll The UCollator containing the comparison rules. | |
| 499 * @param sIter The source string iterator. | |
| 500 * @param tIter The target string iterator. | |
| 501 * @return The result of comparing the strings; one of UCOL_EQUAL, | |
| 502 * UCOL_GREATER, UCOL_LESS | |
| 503 * @param status A pointer to an UErrorCode to receive any errors | |
| 504 * @see ucol_strcoll | |
| 505 * @stable ICU 2.6 | |
| 506 */ | |
| 507 U_STABLE UCollationResult U_EXPORT2 | |
| 508 ucol_strcollIter( const UCollator *coll, | |
| 509 UCharIterator *sIter, | |
| 510 UCharIterator *tIter, | |
| 511 UErrorCode *status); | |
| 512 | |
| 513 /** | |
| 514 * Get the collation strength used in a UCollator. | |
| 515 * The strength influences how strings are compared. | |
| 516 * @param coll The UCollator to query. | |
| 517 * @return The collation strength; one of UCOL_PRIMARY, UCOL_SECONDARY, | |
| 518 * UCOL_TERTIARY, UCOL_QUATERNARY, UCOL_IDENTICAL | |
| 519 * @see ucol_setStrength | |
| 520 * @stable ICU 2.0 | |
| 521 */ | |
| 522 U_STABLE UCollationStrength U_EXPORT2 | |
| 523 ucol_getStrength(const UCollator *coll); | |
| 524 | |
| 525 /** | |
| 526 * Set the collation strength used in a UCollator. | |
| 527 * The strength influences how strings are compared. | |
| 528 * @param coll The UCollator to set. | |
| 529 * @param strength The desired collation strength; one of UCOL_PRIMARY, | |
| 530 * UCOL_SECONDARY, UCOL_TERTIARY, UCOL_QUATERNARY, UCOL_IDENTICAL, UCOL_DEFAULT | |
| 531 * @see ucol_getStrength | |
| 532 * @stable ICU 2.0 | |
| 533 */ | |
| 534 U_STABLE void U_EXPORT2 | |
| 535 ucol_setStrength(UCollator *coll, | |
| 536 UCollationStrength strength); | |
| 537 | |
| 538 /** | |
| 539 * Get the current reordering of scripts (if one has been set). | |
| 540 * @param coll The UCollator to query. | |
| 541 * @param dest The array to fill with the script ordering. | |
| 542 * @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 t
he result string (pre-flighting). | |
| 543 * @param pErrorCode Must be a valid pointer to an error code value, which must
not indicate a failure before the function call. | |
| 544 * @return The length of the array of the script ordering. | |
| 545 * @see ucol_setReorderCodes | |
| 546 * @internal | |
| 547 */ | |
| 548 U_INTERNAL int32_t U_EXPORT2 | |
| 549 ucol_getReorderCodes(const UCollator* coll, | |
| 550 int32_t* dest, | |
| 551 int32_t destCapacity, | |
| 552 UErrorCode *pErrorCode); | |
| 553 | |
| 554 /** | |
| 555 * Set the ordering of scripts for this collator. | |
| 556 * @param coll The UCollator to set. | |
| 557 * @param reorderCodes An array of script codes in the new order. | |
| 558 * @param reorderCodesLength The length of reorderCodes. | |
| 559 * @param pErrorCode Must be a valid pointer to an error code value, which must
not indicate a failure before the function call. | |
| 560 * @see ucol_getReorderCodes | |
| 561 * @internal | |
| 562 */ | |
| 563 U_INTERNAL void U_EXPORT2 | |
| 564 ucol_setReorderCodes(UCollator* coll, | |
| 565 const int32_t* reorderCodes, | |
| 566 int32_t reorderCodesLength, | |
| 567 UErrorCode *pErrorCode); | |
| 568 | |
| 569 /** | |
| 570 * Get the display name for a UCollator. | |
| 571 * The display name is suitable for presentation to a user. | |
| 572 * @param objLoc The locale of the collator in question. | |
| 573 * @param dispLoc The locale for display. | |
| 574 * @param result A pointer to a buffer to receive the attribute. | |
| 575 * @param resultLength The maximum size of result. | |
| 576 * @param status A pointer to an UErrorCode to receive any errors | |
| 577 * @return The total buffer size needed; if greater than resultLength, | |
| 578 * the output was truncated. | |
| 579 * @stable ICU 2.0 | |
| 580 */ | |
| 581 U_STABLE int32_t U_EXPORT2 | |
| 582 ucol_getDisplayName( const char *objLoc, | |
| 583 const char *dispLoc, | |
| 584 UChar *result, | |
| 585 int32_t resultLength, | |
| 586 UErrorCode *status); | |
| 587 | |
| 588 /** | |
| 589 * Get a locale for which collation rules are available. | |
| 590 * A UCollator in a locale returned by this function will perform the correct | |
| 591 * collation for the locale. | |
| 592 * @param localeIndex The index of the desired locale. | |
| 593 * @return A locale for which collation rules are available, or 0 if none. | |
| 594 * @see ucol_countAvailable | |
| 595 * @stable ICU 2.0 | |
| 596 */ | |
| 597 U_STABLE const char* U_EXPORT2 | |
| 598 ucol_getAvailable(int32_t localeIndex); | |
| 599 | |
| 600 /** | |
| 601 * Determine how many locales have collation rules available. | |
| 602 * This function is most useful as determining the loop ending condition for | |
| 603 * calls to {@link #ucol_getAvailable }. | |
| 604 * @return The number of locales for which collation rules are available. | |
| 605 * @see ucol_getAvailable | |
| 606 * @stable ICU 2.0 | |
| 607 */ | |
| 608 U_STABLE int32_t U_EXPORT2 | |
| 609 ucol_countAvailable(void); | |
| 610 | |
| 611 #if !UCONFIG_NO_SERVICE | |
| 612 /** | |
| 613 * Create a string enumerator of all locales for which a valid | |
| 614 * collator may be opened. | |
| 615 * @param status input-output error code | |
| 616 * @return a string enumeration over locale strings. The caller is | |
| 617 * responsible for closing the result. | |
| 618 * @stable ICU 3.0 | |
| 619 */ | |
| 620 U_STABLE UEnumeration* U_EXPORT2 | |
| 621 ucol_openAvailableLocales(UErrorCode *status); | |
| 622 #endif | |
| 623 | |
| 624 /** | |
| 625 * Create a string enumerator of all possible keywords that are relevant to | |
| 626 * collation. At this point, the only recognized keyword for this | |
| 627 * service is "collation". | |
| 628 * @param status input-output error code | |
| 629 * @return a string enumeration over locale strings. The caller is | |
| 630 * responsible for closing the result. | |
| 631 * @stable ICU 3.0 | |
| 632 */ | |
| 633 U_STABLE UEnumeration* U_EXPORT2 | |
| 634 ucol_getKeywords(UErrorCode *status); | |
| 635 | |
| 636 /** | |
| 637 * Given a keyword, create a string enumeration of all values | |
| 638 * for that keyword that are currently in use. | |
| 639 * @param keyword a particular keyword as enumerated by | |
| 640 * ucol_getKeywords. If any other keyword is passed in, *status is set | |
| 641 * to U_ILLEGAL_ARGUMENT_ERROR. | |
| 642 * @param status input-output error code | |
| 643 * @return a string enumeration over collation keyword values, or NULL | |
| 644 * upon error. The caller is responsible for closing the result. | |
| 645 * @stable ICU 3.0 | |
| 646 */ | |
| 647 U_STABLE UEnumeration* U_EXPORT2 | |
| 648 ucol_getKeywordValues(const char *keyword, UErrorCode *status); | |
| 649 | |
| 650 /** | |
| 651 * Given a key and a locale, returns an array of string values in a preferred | |
| 652 * order that would make a difference. These are all and only those values where | |
| 653 * the open (creation) of the service with the locale formed from the input loca
le | |
| 654 * plus input keyword and that value has different behavior than creation with t
he | |
| 655 * input locale alone. | |
| 656 * @param key one of the keys supported by this service. For now, onl
y | |
| 657 * "collation" is supported. | |
| 658 * @param locale the locale | |
| 659 * @param commonlyUsed if set to true it will return only commonly used values | |
| 660 * with the given locale in preferred order. Otherwise, | |
| 661 * it will return all the available values for the locale. | |
| 662 * @param status error status | |
| 663 * @return a string enumeration over keyword values for the given key and the lo
cale. | |
| 664 * @stable ICU 4.2 | |
| 665 */ | |
| 666 U_STABLE UEnumeration* U_EXPORT2 | |
| 667 ucol_getKeywordValuesForLocale(const char* key, | |
| 668 const char* locale, | |
| 669 UBool commonlyUsed, | |
| 670 UErrorCode* status); | |
| 671 | |
| 672 /** | |
| 673 * Return the functionally equivalent locale for the given | |
| 674 * requested locale, with respect to given keyword, for the | |
| 675 * collation service. If two locales return the same result, then | |
| 676 * collators instantiated for these locales will behave | |
| 677 * equivalently. The converse is not always true; two collators | |
| 678 * may in fact be equivalent, but return different results, due to | |
| 679 * internal details. The return result has no other meaning than | |
| 680 * that stated above, and implies nothing as to the relationship | |
| 681 * between the two locales. This is intended for use by | |
| 682 * applications who wish to cache collators, or otherwise reuse | |
| 683 * collators when possible. The functional equivalent may change | |
| 684 * over time. For more information, please see the <a | |
| 685 * href="http://icu-project.org/userguide/locale.html#services"> | |
| 686 * Locales and Services</a> section of the ICU User Guide. | |
| 687 * @param result fillin for the functionally equivalent locale | |
| 688 * @param resultCapacity capacity of the fillin buffer | |
| 689 * @param keyword a particular keyword as enumerated by | |
| 690 * ucol_getKeywords. | |
| 691 * @param locale the requested locale | |
| 692 * @param isAvailable if non-NULL, pointer to a fillin parameter that | |
| 693 * indicates whether the requested locale was 'available' to the | |
| 694 * collation service. A locale is defined as 'available' if it | |
| 695 * physically exists within the collation locale data. | |
| 696 * @param status pointer to input-output error code | |
| 697 * @return the actual buffer size needed for the locale. If greater | |
| 698 * than resultCapacity, the returned full name will be truncated and | |
| 699 * an error code will be returned. | |
| 700 * @stable ICU 3.0 | |
| 701 */ | |
| 702 U_STABLE int32_t U_EXPORT2 | |
| 703 ucol_getFunctionalEquivalent(char* result, int32_t resultCapacity, | |
| 704 const char* keyword, const char* locale, | |
| 705 UBool* isAvailable, UErrorCode* status); | |
| 706 | |
| 707 /** | |
| 708 * Get the collation rules from a UCollator. | |
| 709 * The rules will follow the rule syntax. | |
| 710 * @param coll The UCollator to query. | |
| 711 * @param length | |
| 712 * @return The collation rules. | |
| 713 * @stable ICU 2.0 | |
| 714 */ | |
| 715 U_STABLE const UChar* U_EXPORT2 | |
| 716 ucol_getRules( const UCollator *coll, | |
| 717 int32_t *length); | |
| 718 | |
| 719 /** Get the short definition string for a collator. This API harvests the collat
or's | |
| 720 * locale and the attribute set and produces a string that can be used for open
ing | |
| 721 * a collator with the same properties using the ucol_openFromShortString API. | |
| 722 * This string will be normalized. | |
| 723 * The structure and the syntax of the string is defined in the "Naming collato
rs" | |
| 724 * section of the users guide: | |
| 725 * http://icu-project.org/userguide/Collate_Concepts.html#Naming_Collators | |
| 726 * This API supports preflighting. | |
| 727 * @param coll a collator | |
| 728 * @param locale a locale that will appear as a collators locale in the resulti
ng | |
| 729 * short string definition. If NULL, the locale will be harvested
| |
| 730 * from the collator. | |
| 731 * @param buffer space to hold the resulting string | |
| 732 * @param capacity capacity of the buffer | |
| 733 * @param status for returning errors. All the preflighting errors are featured | |
| 734 * @return length of the resulting string | |
| 735 * @see ucol_openFromShortString | |
| 736 * @see ucol_normalizeShortDefinitionString | |
| 737 * @stable ICU 3.0 | |
| 738 */ | |
| 739 U_STABLE int32_t U_EXPORT2 | |
| 740 ucol_getShortDefinitionString(const UCollator *coll, | |
| 741 const char *locale, | |
| 742 char *buffer, | |
| 743 int32_t capacity, | |
| 744 UErrorCode *status); | |
| 745 | |
| 746 /** Verifies and normalizes short definition string. | |
| 747 * Normalized short definition string has all the option sorted by the argument
name, | |
| 748 * so that equivalent definition strings are the same. | |
| 749 * This API supports preflighting. | |
| 750 * @param source definition string | |
| 751 * @param destination space to hold the resulting string | |
| 752 * @param capacity capacity of the buffer | |
| 753 * @param parseError if not NULL, structure that will get filled with error's p
re | |
| 754 * and post context in case of error. | |
| 755 * @param status Error code. This API will return an error if an invalid at
tribute | |
| 756 * or attribute/value combination is specified. All the prefl
ighting | |
| 757 * errors are also featured | |
| 758 * @return length of the resulting normalized string. | |
| 759 * | |
| 760 * @see ucol_openFromShortString | |
| 761 * @see ucol_getShortDefinitionString | |
| 762 * | |
| 763 * @stable ICU 3.0 | |
| 764 */ | |
| 765 | |
| 766 U_STABLE int32_t U_EXPORT2 | |
| 767 ucol_normalizeShortDefinitionString(const char *source, | |
| 768 char *destination, | |
| 769 int32_t capacity, | |
| 770 UParseError *parseError, | |
| 771 UErrorCode *status); | |
| 772 | |
| 773 | |
| 774 /** | |
| 775 * Get a sort key for a string from a UCollator. | |
| 776 * Sort keys may be compared using <TT>strcmp</TT>. | |
| 777 * | |
| 778 * Like ICU functions that write to an output buffer, the buffer contents | |
| 779 * is undefined if the buffer capacity (resultLength parameter) is too small. | |
| 780 * Unlike ICU functions that write a string to an output buffer, | |
| 781 * the terminating zero byte is counted in the sort key length. | |
| 782 * @param coll The UCollator containing the collation rules. | |
| 783 * @param source The string to transform. | |
| 784 * @param sourceLength The length of source, or -1 if null-terminated. | |
| 785 * @param result A pointer to a buffer to receive the attribute. | |
| 786 * @param resultLength The maximum size of result. | |
| 787 * @return The size needed to fully store the sort key. | |
| 788 * If there was an internal error generating the sort key, | |
| 789 * a zero value is returned. | |
| 790 * @see ucol_keyHashCode | |
| 791 * @stable ICU 2.0 | |
| 792 */ | |
| 793 U_STABLE int32_t U_EXPORT2 | |
| 794 ucol_getSortKey(const UCollator *coll, | |
| 795 const UChar *source, | |
| 796 int32_t sourceLength, | |
| 797 uint8_t *result, | |
| 798 int32_t resultLength); | |
| 799 | |
| 800 | |
| 801 /** Gets the next count bytes of a sort key. Caller needs | |
| 802 * to preserve state array between calls and to provide | |
| 803 * the same type of UCharIterator set with the same string. | |
| 804 * The destination buffer provided must be big enough to store | |
| 805 * the number of requested bytes. Generated sortkey is not | |
| 806 * compatible with sortkeys generated using ucol_getSortKey | |
| 807 * API, since we don't do any compression. If uncompressed | |
| 808 * sortkeys are required, this API can be used. | |
| 809 * @param coll The UCollator containing the collation rules. | |
| 810 * @param iter UCharIterator containing the string we need | |
| 811 * the sort key to be calculated for. | |
| 812 * @param state Opaque state of sortkey iteration. | |
| 813 * @param dest Buffer to hold the resulting sortkey part | |
| 814 * @param count number of sort key bytes required. | |
| 815 * @param status error code indicator. | |
| 816 * @return the actual number of bytes of a sortkey. It can be | |
| 817 * smaller than count if we have reached the end of | |
| 818 * the sort key. | |
| 819 * @stable ICU 2.6 | |
| 820 */ | |
| 821 U_STABLE int32_t U_EXPORT2 | |
| 822 ucol_nextSortKeyPart(const UCollator *coll, | |
| 823 UCharIterator *iter, | |
| 824 uint32_t state[2], | |
| 825 uint8_t *dest, int32_t count, | |
| 826 UErrorCode *status); | |
| 827 | |
| 828 /** enum that is taken by ucol_getBound API | |
| 829 * See below for explanation | |
| 830 * do not change the values assigned to the | |
| 831 * members of this enum. Underlying code | |
| 832 * depends on them having these numbers | |
| 833 * @stable ICU 2.0 | |
| 834 */ | |
| 835 typedef enum { | |
| 836 /** lower bound */ | |
| 837 UCOL_BOUND_LOWER = 0, | |
| 838 /** upper bound that will match strings of exact size */ | |
| 839 UCOL_BOUND_UPPER = 1, | |
| 840 /** upper bound that will match all the strings that have the same initial sub
string as the given string */ | |
| 841 UCOL_BOUND_UPPER_LONG = 2, | |
| 842 UCOL_BOUND_VALUE_COUNT | |
| 843 } UColBoundMode; | |
| 844 | |
| 845 /** | |
| 846 * Produce a bound for a given sortkey and a number of levels. | |
| 847 * Return value is always the number of bytes needed, regardless of | |
| 848 * whether the result buffer was big enough or even valid.<br> | |
| 849 * Resulting bounds can be used to produce a range of strings that are | |
| 850 * between upper and lower bounds. For example, if bounds are produced | |
| 851 * for a sortkey of string "smith", strings between upper and lower | |
| 852 * bounds with one level would include "Smith", "SMITH", "sMiTh".<br> | |
| 853 * There are two upper bounds that can be produced. If UCOL_BOUND_UPPER | |
| 854 * is produced, strings matched would be as above. However, if bound | |
| 855 * produced using UCOL_BOUND_UPPER_LONG is used, the above example will | |
| 856 * also match "Smithsonian" and similar.<br> | |
| 857 * For more on usage, see example in cintltst/capitst.c in procedure | |
| 858 * TestBounds. | |
| 859 * Sort keys may be compared using <TT>strcmp</TT>. | |
| 860 * @param source The source sortkey. | |
| 861 * @param sourceLength The length of source, or -1 if null-terminated. | |
| 862 * (If an unmodified sortkey is passed, it is always null | |
| 863 * terminated). | |
| 864 * @param boundType Type of bound required. It can be UCOL_BOUND_LOWER, which | |
| 865 * produces a lower inclusive bound, UCOL_BOUND_UPPER, that | |
| 866 * produces upper bound that matches strings of the same length
| |
| 867 * or UCOL_BOUND_UPPER_LONG that matches strings that have the | |
| 868 * same starting substring as the source string. | |
| 869 * @param noOfLevels Number of levels required in the resulting bound (for most
| |
| 870 * uses, the recommended value is 1). See users guide for | |
| 871 * explanation on number of levels a sortkey can have. | |
| 872 * @param result A pointer to a buffer to receive the resulting sortkey. | |
| 873 * @param resultLength The maximum size of result. | |
| 874 * @param status Used for returning error code if something went wrong. If the | |
| 875 * number of levels requested is higher than the number of levels | |
| 876 * in the source key, a warning (U_SORT_KEY_TOO_SHORT_WARNING) is | |
| 877 * issued. | |
| 878 * @return The size needed to fully store the bound. | |
| 879 * @see ucol_keyHashCode | |
| 880 * @stable ICU 2.1 | |
| 881 */ | |
| 882 U_STABLE int32_t U_EXPORT2 | |
| 883 ucol_getBound(const uint8_t *source, | |
| 884 int32_t sourceLength, | |
| 885 UColBoundMode boundType, | |
| 886 uint32_t noOfLevels, | |
| 887 uint8_t *result, | |
| 888 int32_t resultLength, | |
| 889 UErrorCode *status); | |
| 890 | |
| 891 /** | |
| 892 * Gets the version information for a Collator. Version is currently | |
| 893 * an opaque 32-bit number which depends, among other things, on major | |
| 894 * versions of the collator tailoring and UCA. | |
| 895 * @param coll The UCollator to query. | |
| 896 * @param info the version # information, the result will be filled in | |
| 897 * @stable ICU 2.0 | |
| 898 */ | |
| 899 U_STABLE void U_EXPORT2 | |
| 900 ucol_getVersion(const UCollator* coll, UVersionInfo info); | |
| 901 | |
| 902 /** | |
| 903 * Gets the UCA version information for a Collator. Version is the | |
| 904 * UCA version number (3.1.1, 4.0). | |
| 905 * @param coll The UCollator to query. | |
| 906 * @param info the version # information, the result will be filled in | |
| 907 * @stable ICU 2.8 | |
| 908 */ | |
| 909 U_STABLE void U_EXPORT2 | |
| 910 ucol_getUCAVersion(const UCollator* coll, UVersionInfo info); | |
| 911 | |
| 912 /** | |
| 913 * Merge two sort keys. The levels are merged with their corresponding counterpa
rts | |
| 914 * (primaries with primaries, secondaries with secondaries etc.). Between the va
lues | |
| 915 * from the same level a separator is inserted. | |
| 916 * example (uncompressed): | |
| 917 * 191B1D 01 050505 01 910505 00 and 1F2123 01 050505 01 910505 00 | |
| 918 * will be merged as | |
| 919 * 191B1D 02 1F212301 050505 02 050505 01 910505 02 910505 00 | |
| 920 * This allows for concatenating of first and last names for sorting, among othe
r things. | |
| 921 * If the destination buffer is not big enough, the results are undefined. | |
| 922 * If any of source lengths are zero or any of source pointers are NULL/undefine
d, | |
| 923 * result is of size zero. | |
| 924 * @param src1 pointer to the first sortkey | |
| 925 * @param src1Length length of the first sortkey | |
| 926 * @param src2 pointer to the second sortkey | |
| 927 * @param src2Length length of the second sortkey | |
| 928 * @param dest buffer to hold the result | |
| 929 * @param destCapacity size of the buffer for the result | |
| 930 * @return size of the result. If the buffer is big enough size is always | |
| 931 * src1Length+src2Length-1 | |
| 932 * @stable ICU 2.0 | |
| 933 */ | |
| 934 U_STABLE int32_t U_EXPORT2 | |
| 935 ucol_mergeSortkeys(const uint8_t *src1, int32_t src1Length, | |
| 936 const uint8_t *src2, int32_t src2Length, | |
| 937 uint8_t *dest, int32_t destCapacity); | |
| 938 | |
| 939 /** | |
| 940 * Universal attribute setter | |
| 941 * @param coll collator which attributes are to be changed | |
| 942 * @param attr attribute type | |
| 943 * @param value attribute value | |
| 944 * @param status to indicate whether the operation went on smoothly or there wer
e errors | |
| 945 * @see UColAttribute | |
| 946 * @see UColAttributeValue | |
| 947 * @see ucol_getAttribute | |
| 948 * @stable ICU 2.0 | |
| 949 */ | |
| 950 U_STABLE void U_EXPORT2 | |
| 951 ucol_setAttribute(UCollator *coll, UColAttribute attr, UColAttributeValue value,
UErrorCode *status); | |
| 952 | |
| 953 /** | |
| 954 * Universal attribute getter | |
| 955 * @param coll collator which attributes are to be changed | |
| 956 * @param attr attribute type | |
| 957 * @return attribute value | |
| 958 * @param status to indicate whether the operation went on smoothly or there wer
e errors | |
| 959 * @see UColAttribute | |
| 960 * @see UColAttributeValue | |
| 961 * @see ucol_setAttribute | |
| 962 * @stable ICU 2.0 | |
| 963 */ | |
| 964 U_STABLE UColAttributeValue U_EXPORT2 | |
| 965 ucol_getAttribute(const UCollator *coll, UColAttribute attr, UErrorCode *status)
; | |
| 966 | |
| 967 /** Variable top | |
| 968 * is a two byte primary value which causes all the codepoints with primary valu
es that | |
| 969 * are less or equal than the variable top to be shifted when alternate handling
is set | |
| 970 * to UCOL_SHIFTED. | |
| 971 * Sets the variable top to a collation element value of a string supplied. | |
| 972 * @param coll collator which variable top needs to be changed | |
| 973 * @param varTop one or more (if contraction) UChars to which the variable top s
hould be set | |
| 974 * @param len length of variable top string. If -1 it is considered to be zero t
erminated. | |
| 975 * @param status error code. If error code is set, the return value is undefined
. | |
| 976 * Errors set by this function are: <br> | |
| 977 * U_CE_NOT_FOUND_ERROR if more than one character was passed and there is no
such | |
| 978 * a contraction<br> | |
| 979 * U_PRIMARY_TOO_LONG_ERROR if the primary for the variable top has more than
two bytes | |
| 980 * @return a 32 bit value containing the value of the variable top in upper 16 b
its. | |
| 981 * Lower 16 bits are undefined | |
| 982 * @see ucol_getVariableTop | |
| 983 * @see ucol_restoreVariableTop | |
| 984 * @stable ICU 2.0 | |
| 985 */ | |
| 986 U_STABLE uint32_t U_EXPORT2 | |
| 987 ucol_setVariableTop(UCollator *coll, | |
| 988 const UChar *varTop, int32_t len, | |
| 989 UErrorCode *status); | |
| 990 | |
| 991 /** | |
| 992 * Gets the variable top value of a Collator. | |
| 993 * Lower 16 bits are undefined and should be ignored. | |
| 994 * @param coll collator which variable top needs to be retrieved | |
| 995 * @param status error code (not changed by function). If error code is set, | |
| 996 * the return value is undefined. | |
| 997 * @return the variable top value of a Collator. | |
| 998 * @see ucol_setVariableTop | |
| 999 * @see ucol_restoreVariableTop | |
| 1000 * @stable ICU 2.0 | |
| 1001 */ | |
| 1002 U_STABLE uint32_t U_EXPORT2 ucol_getVariableTop(const UCollator *coll, UErrorCod
e *status); | |
| 1003 | |
| 1004 /** | |
| 1005 * Sets the variable top to a collation element value supplied. Variable top is | |
| 1006 * set to the upper 16 bits. | |
| 1007 * Lower 16 bits are ignored. | |
| 1008 * @param coll collator which variable top needs to be changed | |
| 1009 * @param varTop CE value, as returned by ucol_setVariableTop or ucol)getVariabl
eTop | |
| 1010 * @param status error code (not changed by function) | |
| 1011 * @see ucol_getVariableTop | |
| 1012 * @see ucol_setVariableTop | |
| 1013 * @stable ICU 2.0 | |
| 1014 */ | |
| 1015 U_STABLE void U_EXPORT2 | |
| 1016 ucol_restoreVariableTop(UCollator *coll, const uint32_t varTop, UErrorCode *stat
us); | |
| 1017 | |
| 1018 /** | |
| 1019 * Thread safe cloning operation. The result is a clone of a given collator. | |
| 1020 * @param coll collator to be cloned | |
| 1021 * @param stackBuffer user allocated space for the new clone. | |
| 1022 * If NULL new memory will be allocated. | |
| 1023 * If buffer is not large enough, new memory will be allocated. | |
| 1024 * Clients can use the U_COL_SAFECLONE_BUFFERSIZE. | |
| 1025 * This will probably be enough to avoid memory allocations. | |
| 1026 * @param pBufferSize pointer to size of allocated space. | |
| 1027 * If *pBufferSize == 0, a sufficient size for use in cloning will | |
| 1028 * be returned ('pre-flighting') | |
| 1029 * If *pBufferSize is not enough for a stack-based safe clone, | |
| 1030 * new memory will be allocated. | |
| 1031 * @param status to indicate whether the operation went on smoothly or there wer
e errors | |
| 1032 * An informational status value, U_SAFECLONE_ALLOCATED_ERROR, is used if any | |
| 1033 * allocations were necessary. | |
| 1034 * @return pointer to the new clone | |
| 1035 * @see ucol_open | |
| 1036 * @see ucol_openRules | |
| 1037 * @see ucol_close | |
| 1038 * @stable ICU 2.0 | |
| 1039 */ | |
| 1040 U_STABLE UCollator* U_EXPORT2 | |
| 1041 ucol_safeClone(const UCollator *coll, | |
| 1042 void *stackBuffer, | |
| 1043 int32_t *pBufferSize, | |
| 1044 UErrorCode *status); | |
| 1045 | |
| 1046 /** default memory size for the new clone. It needs to be this large for os/400
large pointers | |
| 1047 * @stable ICU 2.0 | |
| 1048 */ | |
| 1049 #define U_COL_SAFECLONE_BUFFERSIZE 512 | |
| 1050 | |
| 1051 /** | |
| 1052 * Returns current rules. Delta defines whether full rules are returned or just
the tailoring. | |
| 1053 * Returns number of UChars needed to store rules. If buffer is NULL or bufferLe
n is not enough | |
| 1054 * to store rules, will store up to available space. | |
| 1055 * @param coll collator to get the rules from | |
| 1056 * @param delta one of UCOL_TAILORING_ONLY, UCOL_FULL_RULES. | |
| 1057 * @param buffer buffer to store the result in. If NULL, you'll get no rules. | |
| 1058 * @param bufferLen lenght of buffer to store rules in. If less then needed you'
ll get only the part that fits in. | |
| 1059 * @return current rules | |
| 1060 * @stable ICU 2.0 | |
| 1061 */ | |
| 1062 U_STABLE int32_t U_EXPORT2 | |
| 1063 ucol_getRulesEx(const UCollator *coll, UColRuleOption delta, UChar *buffer, int3
2_t bufferLen); | |
| 1064 | |
| 1065 /** | |
| 1066 * gets the locale name of the collator. If the collator | |
| 1067 * is instantiated from the rules, then this function returns | |
| 1068 * NULL. | |
| 1069 * @param coll The UCollator for which the locale is needed | |
| 1070 * @param type You can choose between requested, valid and actual | |
| 1071 * locale. For description see the definition of | |
| 1072 * ULocDataLocaleType in uloc.h | |
| 1073 * @param status error code of the operation | |
| 1074 * @return real locale name from which the collation data comes. | |
| 1075 * If the collator was instantiated from rules, returns | |
| 1076 * NULL. | |
| 1077 * @deprecated ICU 2.8 Use ucol_getLocaleByType instead | |
| 1078 */ | |
| 1079 U_DEPRECATED const char * U_EXPORT2 | |
| 1080 ucol_getLocale(const UCollator *coll, ULocDataLocaleType type, UErrorCode *statu
s); | |
| 1081 | |
| 1082 | |
| 1083 /** | |
| 1084 * gets the locale name of the collator. If the collator | |
| 1085 * is instantiated from the rules, then this function returns | |
| 1086 * NULL. | |
| 1087 * @param coll The UCollator for which the locale is needed | |
| 1088 * @param type You can choose between requested, valid and actual | |
| 1089 * locale. For description see the definition of | |
| 1090 * ULocDataLocaleType in uloc.h | |
| 1091 * @param status error code of the operation | |
| 1092 * @return real locale name from which the collation data comes. | |
| 1093 * If the collator was instantiated from rules, returns | |
| 1094 * NULL. | |
| 1095 * @stable ICU 2.8 | |
| 1096 */ | |
| 1097 U_STABLE const char * U_EXPORT2 | |
| 1098 ucol_getLocaleByType(const UCollator *coll, ULocDataLocaleType type, UErrorCode
*status); | |
| 1099 | |
| 1100 /** | |
| 1101 * Get an Unicode set that contains all the characters and sequences tailored in
| |
| 1102 * this collator. The result must be disposed of by using uset_close. | |
| 1103 * @param coll The UCollator for which we want to get tailored chars | |
| 1104 * @param status error code of the operation | |
| 1105 * @return a pointer to newly created USet. Must be be disposed by using uset_cl
ose | |
| 1106 * @see ucol_openRules | |
| 1107 * @see uset_close | |
| 1108 * @stable ICU 2.4 | |
| 1109 */ | |
| 1110 U_STABLE USet * U_EXPORT2 | |
| 1111 ucol_getTailoredSet(const UCollator *coll, UErrorCode *status); | |
| 1112 | |
| 1113 /** | |
| 1114 * Universal attribute getter that returns UCOL_DEFAULT if the value is default | |
| 1115 * @param coll collator which attributes are to be changed | |
| 1116 * @param attr attribute type | |
| 1117 * @return attribute value or UCOL_DEFAULT if the value is default | |
| 1118 * @param status to indicate whether the operation went on smoothly or there wer
e errors | |
| 1119 * @see UColAttribute | |
| 1120 * @see UColAttributeValue | |
| 1121 * @see ucol_setAttribute | |
| 1122 * @internal ICU 3.0 | |
| 1123 */ | |
| 1124 U_INTERNAL UColAttributeValue U_EXPORT2 | |
| 1125 ucol_getAttributeOrDefault(const UCollator *coll, UColAttribute attr, UErrorCode
*status); | |
| 1126 | |
| 1127 /** Check whether two collators are equal. Collators are considered equal if the
y | |
| 1128 * will sort strings the same. This means that both the current attributes and
the | |
| 1129 * rules must be equivalent. Currently used for RuleBasedCollator::operator==. | |
| 1130 * @param source first collator | |
| 1131 * @param target second collator | |
| 1132 * @return TRUE or FALSE | |
| 1133 * @internal ICU 3.0 | |
| 1134 */ | |
| 1135 U_INTERNAL UBool U_EXPORT2 | |
| 1136 ucol_equals(const UCollator *source, const UCollator *target); | |
| 1137 | |
| 1138 /** Calculates the set of unsafe code points, given a collator. | |
| 1139 * A character is unsafe if you could append any character and cause the order
ing to alter significantly. | |
| 1140 * Collation sorts in normalized order, so anything that rearranges in normali
zation can cause this. | |
| 1141 * Thus if you have a character like a_umlaut, and you add a lower_dot to it, | |
| 1142 * then it normalizes to a_lower_dot + umlaut, and sorts differently. | |
| 1143 * @param coll Collator | |
| 1144 * @param unsafe a fill-in set to receive the unsafe points | |
| 1145 * @param status for catching errors | |
| 1146 * @return number of elements in the set | |
| 1147 * @internal ICU 3.0 | |
| 1148 */ | |
| 1149 U_INTERNAL int32_t U_EXPORT2 | |
| 1150 ucol_getUnsafeSet( const UCollator *coll, | |
| 1151 USet *unsafe, | |
| 1152 UErrorCode *status); | |
| 1153 | |
| 1154 /** Reset UCA's static pointers. You don't want to use this, unless your static
memory can go away. | |
| 1155 * @internal ICU 3.2.1 | |
| 1156 */ | |
| 1157 U_INTERNAL void U_EXPORT2 | |
| 1158 ucol_forgetUCA(void); | |
| 1159 | |
| 1160 /** Touches all resources needed for instantiating a collator from a short strin
g definition, | |
| 1161 * thus filling up the cache. | |
| 1162 * @param definition A short string containing a locale and a set of attributes.
| |
| 1163 * Attributes not explicitly mentioned are left at the default | |
| 1164 * state for a locale. | |
| 1165 * @param parseError if not NULL, structure that will get filled with error's pr
e | |
| 1166 * and post context in case of error. | |
| 1167 * @param forceDefaults if FALSE, the settings that are the same as the collator
| |
| 1168 * default settings will not be applied (for example, setting | |
| 1169 * French secondary on a French collator would not be executed
). | |
| 1170 * If TRUE, all the settings will be applied regardless of the
| |
| 1171 * collator default value. If the definition | |
| 1172 * strings are to be cached, should be set to FALSE. | |
| 1173 * @param status Error code. Apart from regular error conditions connected t
o | |
| 1174 * instantiating collators (like out of memory or similar), th
is | |
| 1175 * API will return an error if an invalid attribute or attribu
te/value | |
| 1176 * combination is specified. | |
| 1177 * @see ucol_openFromShortString | |
| 1178 * @internal ICU 3.2.1 | |
| 1179 */ | |
| 1180 U_INTERNAL void U_EXPORT2 | |
| 1181 ucol_prepareShortStringOpen( const char *definition, | |
| 1182 UBool forceDefaults, | |
| 1183 UParseError *parseError, | |
| 1184 UErrorCode *status); | |
| 1185 | |
| 1186 /** Creates a binary image of a collator. This binary image can be stored and | |
| 1187 * later used to instantiate a collator using ucol_openBinary. | |
| 1188 * This API supports preflighting. | |
| 1189 * @param coll Collator | |
| 1190 * @param buffer a fill-in buffer to receive the binary image | |
| 1191 * @param capacity capacity of the destination buffer | |
| 1192 * @param status for catching errors | |
| 1193 * @return size of the image | |
| 1194 * @see ucol_openBinary | |
| 1195 * @stable ICU 3.2 | |
| 1196 */ | |
| 1197 U_STABLE int32_t U_EXPORT2 | |
| 1198 ucol_cloneBinary(const UCollator *coll, | |
| 1199 uint8_t *buffer, int32_t capacity, | |
| 1200 UErrorCode *status); | |
| 1201 | |
| 1202 /** Opens a collator from a collator binary image created using | |
| 1203 * ucol_cloneBinary. Binary image used in instantiation of the | |
| 1204 * collator remains owned by the user and should stay around for | |
| 1205 * the lifetime of the collator. The API also takes a base collator | |
| 1206 * which usualy should be UCA. | |
| 1207 * @param bin binary image owned by the user and required through the | |
| 1208 * lifetime of the collator | |
| 1209 * @param length size of the image. If negative, the API will try to | |
| 1210 * figure out the length of the image | |
| 1211 * @param base fallback collator, usually UCA. Base is required to be | |
| 1212 * present through the lifetime of the collator. Currently | |
| 1213 * it cannot be NULL. | |
| 1214 * @param status for catching errors | |
| 1215 * @return newly created collator | |
| 1216 * @see ucol_cloneBinary | |
| 1217 * @stable ICU 3.2 | |
| 1218 */ | |
| 1219 U_STABLE UCollator* U_EXPORT2 | |
| 1220 ucol_openBinary(const uint8_t *bin, int32_t length, | |
| 1221 const UCollator *base, | |
| 1222 UErrorCode *status); | |
| 1223 | |
| 1224 | |
| 1225 #endif /* #if !UCONFIG_NO_COLLATION */ | |
| 1226 | |
| 1227 #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/