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intl/icu/source/i18n/ucol_imp.h

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1 /*
2 *******************************************************************************
3 *
4 * Copyright (C) 1998-2013, International Business Machines
5 * Corporation and others. All Rights Reserved.
6 *
7 *******************************************************************************
8 *
9 * Private implementation header for C collation
10 * file name: ucol_imp.h
11 * encoding: US-ASCII
12 * tab size: 8 (not used)
13 * indentation:4
14 *
15 * created on: 2000dec11
16 * created by: Vladimir Weinstein
17 *
18 * Modification history
19 * Date Name Comments
20 * 02/16/2001 synwee Added UCOL_GETPREVCE for the use in ucoleitr
21 * 02/27/2001 synwee Added getMaxExpansion data structure in UCollator
22 * 03/02/2001 synwee Added UCOL_IMPLICIT_CE
23 * 03/12/2001 synwee Added pointer start to collIterate.
24 */
25
26 #ifndef UCOL_IMP_H
27 #define UCOL_IMP_H
28
29 #include "unicode/utypes.h"
30 #ifdef __cplusplus
31 # include "unicode/utf16.h"
32 #endif
33
34 #define UCA_DATA_TYPE "icu"
35 #define UCA_DATA_NAME "ucadata"
36 #define INVC_DATA_TYPE "icu"
37 #define INVC_DATA_NAME "invuca"
38
39 /**
40 * Convenience string denoting the Collation data tree
41 * @internal ICU 3.0
42 */
43 #define U_ICUDATA_COLL U_ICUDATA_NAME U_TREE_SEPARATOR_STRING "coll"
44
45 #if !UCONFIG_NO_COLLATION
46
47 #ifdef __cplusplus
48 #include "unicode/normalizer2.h"
49 #include "unicode/unistr.h"
50 #endif
51 #include "unicode/ucol.h"
52 #include "ucol_data.h"
53 #include "utrie.h"
54 #include "cmemory.h"
55
56 /* This is the internal header file which contains important declarations for
57 * the collation framework.
58 * Ready to use collators are stored as binary images. Both UCA and tailorings
59 * share the same binary format. Individual files (currently only UCA) have a
60 * udata header in front of the image and should be opened using udata_open.
61 * Tailoring images are currently stored inside resource bundles and are intialized
62 * through ucol_open API.
63 *
64 * The following describes the formats for collation binaries
65 * (UCA & tailorings) and for the inverse UCA table.
66 * Substructures are described in the collation design document at
67 * http://source.icu-project.org/repos/icu/icuhtml/trunk/design/collation/ICU_collation_design.htm
68 *
69 * -------------------------------------------------------------
70 *
71 * Here is the format of binary collation image.
72 *
73 * Physical order of structures:
74 * - header (UCATableHeader)
75 * - options (UColOptionSet)
76 * - expansions (CE[])
77 * - contractions (UChar[contractionSize] + CE[contractionSize])
78 * - serialized UTrie with mappings of code points to CEs
79 * - max expansion tables (CE[endExpansionCECount] + uint8_t[endExpansionCECount])
80 * - two bit sets for backward processing in strcoll (identical prefixes)
81 * and for backward CE iteration (each set is uint8_t[UCOL_UNSAFECP_TABLE_SIZE])
82 * - UCA constants (UCAConstants)
83 * - UCA contractions (UChar[contractionUCACombosSize][contractionUCACombosWidth])
84 *
85 * UCATableHeader fields:
86 *
87 * int32_t size; - image size in bytes
88 *
89 * Offsets to interesting data. All offsets are in bytes.
90 * to get the address add to the header address and cast properly.
91 * Some offsets are zero if the corresponding structures are empty.
92 *
93 * Tailoring binaries that only set options and contain no mappings etc.
94 * will have all offsets 0 except for the options and expansion offsets,
95 * which give the position and length of the options array.
96 *
97 * uint32_t options; - offset to default collator options (UColOptionSet *),
98 * a set of 32-bit values. See declaration of UColOptionSet for more details
99 *
100 * uint32_t UCAConsts; - only used (!=0) in UCA image - structure which holds values for indirect positioning and implicit ranges
101 * See declaration of UCAConstants structure. This is a set of unsigned 32-bit values used to store
102 * important constant values that are defined in the UCA and used for building and runtime.
103 *
104 * uint32_t contractionUCACombos; - only used (!=0) in UCA image - list of UCA contractions. This is a zero terminated array of UChar[contractionUCACombosWidth],
105 * containing contractions from the UCA. These are needed in the build process to copy UCA contractions
106 * in case the base contraction symbol is tailored.
107 *
108 * uint32_t magic; - must contain UCOL_HEADER_MAGIC (formatVersion 2.3)
109 *
110 * uint32_t mappingPosition; - offset to UTrie (const uint8_t *mappingPosition). This is a serialized UTrie and should be treated as such.
111 * Used as a primary lookup table for collation elements.
112 *
113 * uint32_t expansion; - offset to expansion table (uint32_t *expansion). This is an array of expansion CEs. Never 0.
114 *
115 * uint32_t contractionIndex; - offset to contraction table (UChar *contractionIndex). Used to look up contraction sequences. Contents
116 * are aligned with the contents of contractionCEs table. 0 if no contractions.
117 *
118 * uint32_t contractionCEs; - offset to resulting contraction CEs (uint32_t *contractionCEs). When a contraction is resolved in the
119 * in the contractionIndex table, the resulting index is used to look up corresponding CE in this table.
120 * 0 if no contractions.
121 * uint32_t contractionSize; - size of contraction table in elements (both Index and CEs).
122 *
123 * Tables described below are used for Boyer-Moore searching algorithm - they define the size of longest expansion
124 * and last CEs in expansions.
125 * uint32_t endExpansionCE; - offset to array of last collation element in expansion (uint32_t *).
126 * Never 0.
127 * uint32_t expansionCESize; - array of maximum expansion sizes (uint8_t *)
128 * int32_t endExpansionCECount; - size of endExpansionCE. See UCOL_GETMAXEXPANSION
129 * for the usage model
130 *
131 * These two offsets point to byte tables that are used in the backup heuristics.
132 * uint32_t unsafeCP; - hash table of unsafe code points (uint8_t *). See ucol_unsafeCP function.
133 * uint32_t contrEndCP; - hash table of final code points in contractions (uint8_t *). See ucol_contractionEndCP.
134 *
135 * int32_t contractionUCACombosSize; - number of UChar[contractionUCACombosWidth] in contractionUCACombos
136 * (formatVersion 2.3)
137 * UBool jamoSpecial; - Jamo special indicator (uint8_t). If TRUE, Jamos are special, so we cannot use simple Hangul decomposition.
138 * UBool isBigEndian; - endianness of this collation binary (formatVersion 2.3)
139 * uint8_t charSetFamily; - charset family of this collation binary (formatVersion 2.3)
140 * uint8_t contractionUCACombosWidth; - number of UChars per UCA contraction in contractionUCACombos (formatVersion 2.3)
141 *
142 * Various version fields
143 * UVersionInfo version; - version 4 uint8_t
144 * UVersionInfo UCAVersion; - version 4 uint8_t
145 * UVersionInfo UCDVersion; - version 4 uint8_t
146 * UVersionInfo formatVersion; - version of the format of the collation binary
147 * same formatVersion as in ucadata.icu's UDataInfo header
148 * (formatVersion 2.3)
149 *
150 * uint32_t offset to the reordering code to lead CE byte remapping table
151 * uint32_t offset to the lead CE byte to reordering code mapping table
152 *
153 * uint8_t reserved[76]; - currently unused
154 *
155 * -------------------------------------------------------------
156 *
157 * Inverse UCA is used for constructing collators from rules. It is always an individual file
158 * and always has a UDataInfo header.
159 * here is the structure:
160 *
161 * uint32_t byteSize; - size of inverse UCA image in bytes
162 * uint32_t tableSize; - length of inverse table (number of uint32_t[3] rows)
163 * uint32_t contsSize; - size of continuation table (number of UChars in table)
164 *
165 * uint32_t table; - offset to inverse table (uint32_t *)
166 * Inverse table contains of rows of 3 uint32_t values. First two values are CE and a possible continuation
167 * the third value is either a code unit (if there is only one code unit for element) or an index to continuation
168 * (number of code units combined with an index).
169 * table. If more than one codepoint have the same CE, continuation table contains code units separated by FFFF and final
170 * code unit sequence for a CE is terminated by FFFE.
171 * uint32_t conts; - offset to continuation table (uint16_t *). Contains code units that transform to a same CE.
172 *
173 * UVersionInfo UCAVersion; - version of the UCA, read from file 4 uint8_t
174 * uint8_t padding[8]; - padding 8 uint8_t
175 * Header is followed by the table and continuation table.
176 */
177
178 /* definition of UCOL_HEADER_MAGIC moved to common/ucol_data.h */
179
180 /* UDataInfo for UCA mapping table */
181 /* dataFormat="UCol" */
182 #define UCA_DATA_FORMAT_0 ((uint8_t)0x55)
183 #define UCA_DATA_FORMAT_1 ((uint8_t)0x43)
184 #define UCA_DATA_FORMAT_2 ((uint8_t)0x6f)
185 #define UCA_DATA_FORMAT_3 ((uint8_t)0x6c)
186
187 #define UCA_FORMAT_VERSION_0 ((uint8_t)3)
188 #define UCA_FORMAT_VERSION_1 0
189 #define UCA_FORMAT_VERSION_2 ((uint8_t)0)
190 #define UCA_FORMAT_VERSION_3 ((uint8_t)0)
191
192 /* UDataInfo for inverse UCA table */
193 /* dataFormat="InvC" */
194 #define INVUCA_DATA_FORMAT_0 ((uint8_t)0x49)
195 #define INVUCA_DATA_FORMAT_1 ((uint8_t)0x6E)
196 #define INVUCA_DATA_FORMAT_2 ((uint8_t)0x76)
197 #define INVUCA_DATA_FORMAT_3 ((uint8_t)0x43)
198
199 #define INVUCA_FORMAT_VERSION_0 ((uint8_t)2)
200 #define INVUCA_FORMAT_VERSION_1 ((uint8_t)1)
201 #define INVUCA_FORMAT_VERSION_2 ((uint8_t)0)
202 #define INVUCA_FORMAT_VERSION_3 ((uint8_t)0)
203
204 /* This is the size of the stack allocated buffer for sortkey generation and similar operations */
205 /* if it is too small, heap allocation will occur.*/
206 /* you can change this value if you need memory - it will affect the performance, though, since we're going to malloc */
207 #define UCOL_MAX_BUFFER 128
208
209 #define UCOL_NORMALIZATION_GROWTH 2
210 #define UCOL_NORMALIZATION_MAX_BUFFER UCOL_MAX_BUFFER*UCOL_NORMALIZATION_GROWTH
211
212 /* This writable buffer is used if we encounter Thai and need to reorder the string on the fly */
213 /* Sometimes we already have a writable buffer (like in case of normalized strings). */
214 /*
215 you can change this value to any value >= 4 if you need memory -
216 it will affect the performance, though, since we're going to malloc.
217 Note 3 is the minimum value for Thai collation and 4 is the
218 minimum number for special Jamo
219 */
220 #define UCOL_WRITABLE_BUFFER_SIZE 256
221
222 /* This is the size of the buffer for expansion CE's */
223 /* In reality we should not have to deal with expm sequences longer then 16 */
224 /* you can change this value if you need memory */
225 /* WARNING THIS BUFFER DOES HAVE MALLOC FALLBACK. If you make it too small, you'll get into performance trouble */
226 /* Reasonable small value is around 10, if you don't do Arabic or other funky collations that have long expansion sequence */
227 /* This is the longest expansion sequence we can handle without bombing out */
228 #define UCOL_EXPAND_CE_BUFFER_SIZE 64
229
230 /* This is the size to increase the buffer for expansion CE's */
231 #define UCOL_EXPAND_CE_BUFFER_EXTEND_SIZE 64
232
233
234 /* Unsafe UChar hash table table size. */
235 /* size is 32 bytes for 1 bit for each latin 1 char + some power of two for */
236 /* hashing the rest of the chars. Size in bytes */
237 #define UCOL_UNSAFECP_TABLE_SIZE 1056
238 /* mask value down to "some power of two"-1 */
239 /* number of bits, not num of bytes. */
240 #define UCOL_UNSAFECP_TABLE_MASK 0x1fff
241
242
243 /* flags bits for collIterate.flags */
244 /* */
245 /* NORM - set for incremental normalize of source string */
246 #define UCOL_ITER_NORM 1
247
248 #define UCOL_ITER_HASLEN 2
249
250 /* UCOL_ITER_INNORMBUF - set if the "pos" is in */
251 /* the writable side buffer, handling */
252 /* incrementally normalized characters. */
253 #define UCOL_ITER_INNORMBUF 4
254
255 /* UCOL_ITER_ALLOCATED - set if this iterator has */
256 /* malloced storage to expand a buffer. */
257 #define UCOL_ITER_ALLOCATED 8
258 /* UCOL_HIRAGANA_Q - note if the codepoint was hiragana */
259 #define UCOL_HIRAGANA_Q 16
260 /* UCOL_WAS_HIRAGANA - set to TRUE if there was a Hiragana */
261 /* otherwise set to false */
262 #define UCOL_WAS_HIRAGANA 32
263 /* UCOL_USE_ITERATOR - set this if collIterate uses a */
264 /* character iterator instead of simply accessing string */
265 /* by index */
266 #define UCOL_USE_ITERATOR 64
267
268 #define UCOL_FORCE_HAN_IMPLICIT 128
269
270 #define NFC_ZERO_CC_BLOCK_LIMIT_ 0x300
271
272 #ifdef __cplusplus
273
274 U_NAMESPACE_BEGIN
275
276 typedef struct collIterate : public UMemory {
277 const UChar *string; /* Original string */
278 /* UChar *start; Pointer to the start of the source string. Either points to string
279 or to writableBuffer */
280 const UChar *endp; /* string end ptr. Is undefined for null terminated strings */
281 const UChar *pos; /* This is position in the string. Can be to original or writable buf */
282
283 uint32_t *toReturn; /* This is the CE from CEs buffer that should be returned */
284 uint32_t *CEpos; /* This is the position to which we have stored processed CEs */
285
286 int32_t *offsetReturn; /* This is the offset to return, if non-NULL */
287 int32_t *offsetStore; /* This is the pointer for storing offsets */
288 int32_t offsetRepeatCount; /* Repeat stored offset if non-zero */
289 int32_t offsetRepeatValue; /* offset value to repeat */
290
291 UnicodeString writableBuffer;
292 const UChar *fcdPosition; /* Position in the original string to continue FCD check from. */
293 const UCollator *coll;
294 const Normalizer2 *nfd;
295 uint8_t flags;
296 uint8_t origFlags;
297 uint32_t *extendCEs; /* This is use if CEs is not big enough */
298 int32_t extendCEsSize; /* Holds the size of the dynamic CEs buffer */
299 uint32_t CEs[UCOL_EXPAND_CE_BUFFER_SIZE]; /* This is where we store CEs */
300
301 int32_t *offsetBuffer; /* A dynamic buffer to hold offsets */
302 int32_t offsetBufferSize; /* The size of the offset buffer */
303
304 UCharIterator *iterator;
305 /*int32_t iteratorIndex;*/
306
307 // The offsetBuffer should probably be a UVector32, but helper functions
308 // are an improvement over duplicated code.
309 void appendOffset(int32_t offset, UErrorCode &errorCode);
310 } collIterate;
311
312 U_NAMESPACE_END
313
314 #else
315
316 typedef struct collIterate collIterate;
317
318 #endif
319
320 #define paddedsize(something) ((something)+((((something)%4)!=0)?(4-(something)%4):0))
321 #define headersize (paddedsize(sizeof(UCATableHeader))+paddedsize(sizeof(UColOptionSet)))
322
323 /*
324 struct used internally in getSpecial*CE.
325 data similar to collIterate.
326 */
327 struct collIterateState {
328 const UChar *pos; /* This is position in the string. Can be to original or writable buf */
329 const UChar *returnPos;
330 const UChar *fcdPosition; /* Position in the original string to continue FCD check from. */
331 const UChar *bufferaddress; /* address of the normalization buffer */
332 int32_t buffersize;
333 uint8_t flags;
334 uint8_t origFlags;
335 uint32_t iteratorIndex;
336 int32_t iteratorMove;
337 };
338
339 U_CAPI void U_EXPORT2
340 uprv_init_collIterate(const UCollator *collator,
341 const UChar *sourceString, int32_t sourceLen,
342 U_NAMESPACE_QUALIFIER collIterate *s, UErrorCode *status);
343
344 /* Internal functions for C test code. */
345 U_CAPI U_NAMESPACE_QUALIFIER collIterate * U_EXPORT2
346 uprv_new_collIterate(UErrorCode *status);
347
348 U_CAPI void U_EXPORT2
349 uprv_delete_collIterate(U_NAMESPACE_QUALIFIER collIterate *s);
350
351 /* @return s->pos == s->endp */
352 U_CAPI UBool U_EXPORT2
353 uprv_collIterateAtEnd(U_NAMESPACE_QUALIFIER collIterate *s);
354
355 #ifdef __cplusplus
356
357 U_NAMESPACE_BEGIN
358
359 struct UCollationPCE;
360 typedef struct UCollationPCE UCollationPCE;
361
362 U_NAMESPACE_END
363
364 struct UCollationElements : public icu::UMemory
365 {
366 /**
367 * Struct wrapper for source data
368 */
369 icu::collIterate iteratordata_;
370 /**
371 * Indicates if this data has been reset.
372 */
373 UBool reset_;
374 /**
375 * Indicates if the data should be deleted.
376 */
377 UBool isWritable;
378
379 /**
380 * Data for getNextProcessed, getPreviousProcessed.
381 */
382 icu::UCollationPCE *pce;
383 };
384
385 #else
386 /*opaque type*/
387 struct UCollationElements;
388 #endif
389
390 U_CAPI void U_EXPORT2
391 uprv_init_pce(const struct UCollationElements *elems);
392
393 #define UCOL_LEVELTERMINATOR 1
394
395 /* mask off anything but primary order */
396 #define UCOL_PRIMARYORDERMASK 0xffff0000
397 /* mask off anything but secondary order */
398 #define UCOL_SECONDARYORDERMASK 0x0000ff00
399 /* mask off anything but tertiary order */
400 #define UCOL_TERTIARYORDERMASK 0x000000ff
401 /* primary order shift */
402 #define UCOL_PRIMARYORDERSHIFT 16
403 /* secondary order shift */
404 #define UCOL_SECONDARYORDERSHIFT 8
405
406 #define UCOL_BYTE_SIZE_MASK 0xFF
407
408 #define UCOL_CASE_BYTE_START 0x80
409 #define UCOL_CASE_SHIFT_START 7
410
411 #define UCOL_IGNORABLE 0
412
413 /* get weights from a CE */
414 #define UCOL_PRIMARYORDER(order) (((order) & UCOL_PRIMARYORDERMASK)>> UCOL_PRIMARYORDERSHIFT)
415 #define UCOL_SECONDARYORDER(order) (((order) & UCOL_SECONDARYORDERMASK)>> UCOL_SECONDARYORDERSHIFT)
416 #define UCOL_TERTIARYORDER(order) ((order) & UCOL_TERTIARYORDERMASK)
417
418 /**
419 * Determine if a character is a Thai vowel (which sorts after
420 * its base consonant).
421 */
422 #define UCOL_ISTHAIPREVOWEL(ch) ((((uint32_t)(ch) - 0xe40) <= (0xe44 - 0xe40)) || \
423 (((uint32_t)(ch) - 0xec0) <= (0xec4 - 0xec0)))
424
425 /**
426 * Determine if a character is a Thai base consonant
427 */
428 #define UCOL_ISTHAIBASECONSONANT(ch) ((uint32_t)(ch) - 0xe01) <= (0xe2e - 0xe01)
429
430 #define UCOL_ISJAMO(ch) ((((uint32_t)(ch) - 0x1100) <= (0x1112 - 0x1100)) || \
431 (((uint32_t)(ch) - 0x1161) <= (0x1175 - 0x1161)) || \
432 (((uint32_t)(ch) - 0x11A8) <= (0x11C2 - 0x11A8)))
433
434 /* Han character ranges */
435 #define UCOL_FIRST_HAN 0x4E00
436 #define UCOL_LAST_HAN 0x9FFF
437 #define UCOL_FIRST_HAN_A 0x3400
438 #define UCOL_LAST_HAN_A 0x4DBF
439 #define UCOL_FIRST_HAN_COMPAT 0xFAE0
440 #define UCOL_LAST_HAN_COMPAT 0xFA2F
441
442 /* Han extension B is in plane 2 */
443 #define UCOL_FIRST_HAN_B 0x20000
444 #define UCOL_LAST_HAN_B 0x2A6DF
445
446 /* Hangul range */
447 #define UCOL_FIRST_HANGUL 0xAC00
448 #define UCOL_LAST_HANGUL 0xD7AF
449
450 /* Jamo ranges */
451 #define UCOL_FIRST_L_JAMO 0x1100
452 #define UCOL_FIRST_V_JAMO 0x1161
453 #define UCOL_FIRST_T_JAMO 0x11A8
454 #define UCOL_LAST_T_JAMO 0x11F9
455
456
457 #if 0
458 /* initializes collIterate structure */
459 /* made as macro to speed up things */
460 #define init_collIterate(collator, sourceString, sourceLen, s) { \
461 (s)->start = (s)->string = (s)->pos = (UChar *)(sourceString); \
462 (s)->endp = (sourceLen) == -1 ? NULL :(UChar *)(sourceString)+(sourceLen); \
463 (s)->CEpos = (s)->toReturn = (s)->CEs; \
464 (s)->isThai = TRUE; \
465 (s)->writableBuffer = (s)->stackWritableBuffer; \
466 (s)->writableBufSize = UCOL_WRITABLE_BUFFER_SIZE; \
467 (s)->coll = (collator); \
468 (s)->fcdPosition = 0; \
469 (s)->flags = 0; \
470 if(((collator)->normalizationMode == UCOL_ON)) (s)->flags |= UCOL_ITER_NORM; \
471 }
472 #endif
473
474
475
476 /*
477 * Macro to get the maximum size of an expansion ending with the argument ce.
478 * Used in the Boyer Moore algorithm.
479 * Note for tailoring, the UCA maxexpansion table has been merged.
480 * Hence we only have to search the tailored collator only.
481 * @param coll const UCollator pointer
482 * @param order last collation element of the expansion sequence
483 * @param result size of the longest expansion with argument collation element
484 * as the last element
485 */
486 #define UCOL_GETMAXEXPANSION(coll, order, result) { \
487 const uint32_t *start; \
488 const uint32_t *limit; \
489 const uint32_t *mid; \
490 start = (coll)->endExpansionCE; \
491 limit = (coll)->lastEndExpansionCE; \
492 while (start < limit - 1) { \
493 mid = start + ((limit - start) >> 1); \
494 if ((order) <= *mid) { \
495 limit = mid; \
496 } \
497 else { \
498 start = mid; \
499 } \
500 } \
501 if (*start == order) { \
502 result = *((coll)->expansionCESize + (start - (coll)->endExpansionCE)); \
503 } \
504 else if (*limit == order) { \
505 result = *(coll->expansionCESize + (limit - coll->endExpansionCE)); \
506 } \
507 else if ((order & 0xFFFF) == 0x00C0) { \
508 result = 2; \
509 } \
510 else { \
511 result = 1; \
512 } \
513 }
514
515 U_CFUNC
516 uint32_t ucol_prv_getSpecialCE(const UCollator *coll, UChar ch, uint32_t CE,
517 U_NAMESPACE_QUALIFIER collIterate *source, UErrorCode *status);
518
519 U_CFUNC
520 uint32_t ucol_prv_getSpecialPrevCE(const UCollator *coll, UChar ch, uint32_t CE,
521 U_NAMESPACE_QUALIFIER collIterate *source, UErrorCode *status);
522 U_CAPI uint32_t U_EXPORT2 ucol_getNextCE(const UCollator *coll,
523 U_NAMESPACE_QUALIFIER collIterate *collationSource, UErrorCode *status);
524 U_CFUNC uint32_t U_EXPORT2 ucol_getPrevCE(const UCollator *coll,
525 U_NAMESPACE_QUALIFIER collIterate *collationSource,
526 UErrorCode *status);
527 /* get some memory */
528 void *ucol_getABuffer(const UCollator *coll, uint32_t size);
529
530 #ifdef __cplusplus
531
532 U_NAMESPACE_BEGIN
533
534 class CollationKey;
535 class SortKeyByteSink;
536
537 U_NAMESPACE_END
538
539 /* function used by C++ getCollationKey to prevent restarting the calculation */
540 U_CFUNC int32_t
541 ucol_getCollationKey(const UCollator *coll,
542 const UChar *source, int32_t sourceLength,
543 icu::CollationKey &key,
544 UErrorCode &errorCode);
545
546 typedef void U_CALLCONV
547 SortKeyGenerator(const UCollator *coll,
548 const UChar *source,
549 int32_t sourceLength,
550 icu::SortKeyByteSink &result,
551 UErrorCode *status);
552
553 /* worker function for generating sortkeys */
554 U_CFUNC
555 void U_CALLCONV
556 ucol_calcSortKey(const UCollator *coll,
557 const UChar *source,
558 int32_t sourceLength,
559 icu::SortKeyByteSink &result,
560 UErrorCode *status);
561
562 U_CFUNC
563 void U_CALLCONV
564 ucol_calcSortKeySimpleTertiary(const UCollator *coll,
565 const UChar *source,
566 int32_t sourceLength,
567 icu::SortKeyByteSink &result,
568 UErrorCode *status);
569
570 #else
571
572 typedef void U_CALLCONV
573 SortKeyGenerator(const UCollator *coll,
574 const UChar *source,
575 int32_t sourceLength,
576 void *result,
577 UErrorCode *status);
578
579 #endif
580
581 /**
582 * Used to set requested and valid locales on a collator returned by the collator
583 * service.
584 */
585 U_CFUNC void U_EXPORT2
586 ucol_setReqValidLocales(UCollator *coll, char *requestedLocaleToAdopt, char *validLocaleToAdopt, char *actualLocaleToAdopt);
587
588 #define UCOL_SPECIAL_FLAG 0xF0000000
589 #define UCOL_TAG_SHIFT 24
590 #define UCOL_TAG_MASK 0x0F000000
591 #define INIT_EXP_TABLE_SIZE 1024
592 #define UCOL_NOT_FOUND 0xF0000000
593 #define UCOL_EXPANSION 0xF1000000
594 #define UCOL_CONTRACTION 0xF2000000
595 #define UCOL_THAI 0xF3000000
596 #define UCOL_UNMARKED 0x03
597 #define UCOL_NEW_TERTIARYORDERMASK 0x0000003f
598
599 /* Bit mask for primary collation strength. */
600 #define UCOL_PRIMARYMASK 0xFFFF0000
601
602 /* Bit mask for secondary collation strength. */
603 #define UCOL_SECONDARYMASK 0x0000FF00
604
605 /* Bit mask for tertiary collation strength. */
606 #define UCOL_TERTIARYMASK 0x000000FF
607
608 /**
609 * Internal.
610 * This indicates the last element in a UCollationElements has been consumed.
611 * Compare with the UCOL_NULLORDER, UCOL_NULLORDER is returned if error occurs.
612 */
613 #define UCOL_NO_MORE_CES 0x00010101
614 #define UCOL_NO_MORE_CES_PRIMARY 0x00010000
615 #define UCOL_NO_MORE_CES_SECONDARY 0x00000100
616 #define UCOL_NO_MORE_CES_TERTIARY 0x00000001
617
618 #define isSpecial(CE) ((((CE)&UCOL_SPECIAL_FLAG)>>28)==0xF)
619
620 #define UCOL_UPPER_CASE 0x80
621 #define UCOL_MIXED_CASE 0x40
622 #define UCOL_LOWER_CASE 0x00
623
624 #define UCOL_CONTINUATION_MARKER 0xC0
625 #define UCOL_REMOVE_CONTINUATION 0xFFFFFF3F
626
627 #define isContinuation(CE) (((CE) & UCOL_CONTINUATION_MARKER) == UCOL_CONTINUATION_MARKER)
628 #define isFlagged(CE) (((CE) & 0x80) == 0x80)
629 #define isLongPrimary(CE) (((CE) & 0xC0) == 0xC0)
630
631 #define getCETag(CE) (((CE)&UCOL_TAG_MASK)>>UCOL_TAG_SHIFT)
632 #define isContraction(CE) (isSpecial((CE)) && (getCETag((CE)) == CONTRACTION_TAG))
633 #define isPrefix(CE) (isSpecial((CE)) && (getCETag((CE)) == SPEC_PROC_TAG))
634 #define constructContractCE(tag, CE) (UCOL_SPECIAL_FLAG | ((tag)<<UCOL_TAG_SHIFT) | ((CE)&0xFFFFFF))
635 #define constructSpecProcCE(CE) (UCOL_SPECIAL_FLAG | (SPEC_PROC_TAG<<UCOL_TAG_SHIFT) | ((CE)&0xFFFFFF))
636 #define getContractOffset(CE) ((CE)&0xFFFFFF)
637 #define getExpansionOffset(CE) (((CE)&0x00FFFFF0)>>4)
638 #define getExpansionCount(CE) ((CE)&0xF)
639 #define isCEIgnorable(CE) (((CE) & 0xFFFFFFBF) == 0)
640
641 /* StringSearch internal use */
642 #define inNormBuf(coleiter) ((coleiter)->iteratordata_.flags & UCOL_ITER_INNORMBUF)
643 #define isFCDPointerNull(coleiter) ((coleiter)->iteratordata_.fcdPosition == NULL)
644 #define hasExpansion(coleiter) ((coleiter)->iteratordata_.CEpos != (coleiter)->iteratordata_.CEs)
645 #define getExpansionPrefix(coleiter) ((coleiter)->iteratordata_.toReturn - (coleiter)->iteratordata_.CEs)
646 #define setExpansionPrefix(coleiter, offset) ((coleiter)->iteratordata_.CEs + offset)
647 #define getExpansionSuffix(coleiter) ((coleiter)->iteratordata_.CEpos - (coleiter)->iteratordata_.toReturn)
648 #define setExpansionSuffix(coleiter, offset) ((coleiter)->iteratordata_.toReturn = (coleiter)->iteratordata_.CEpos - leftoverces)
649
650 /* This is an enum that lists magic special byte values from the fractional UCA.
651 * See also http://site.icu-project.org/design/collation/bytes */
652 /* TODO: all the #defines that refer to special byte values from the UCA should be changed to point here */
653
654 enum {
655 UCOL_BYTE_ZERO = 0x00,
656 UCOL_BYTE_LEVEL_SEPARATOR = 0x01,
657 UCOL_BYTE_SORTKEY_GLUE = 0x02,
658 UCOL_BYTE_SHIFT_PREFIX = 0x03,
659 UCOL_BYTE_UNSHIFTED_MIN = UCOL_BYTE_SHIFT_PREFIX,
660 UCOL_BYTE_FIRST_TAILORED = 0x04,
661 UCOL_BYTE_COMMON = 0x05,
662 UCOL_BYTE_FIRST_UCA = UCOL_BYTE_COMMON,
663 /* TODO: Make the following values dynamic since they change with almost every UCA version. */
664 UCOL_CODAN_PLACEHOLDER = 0x12,
665 UCOL_BYTE_FIRST_NON_LATIN_PRIMARY = 0x5B,
666 UCOL_BYTE_UNSHIFTED_MAX = 0xFF
667 };
668
669 #if 0
670 #define UCOL_RESET_TOP_VALUE 0x9F000303
671 #define UCOL_FIRST_PRIMARY_IGNORABLE 0x00008705
672 #define UCOL_LAST_PRIMARY_IGNORABLE 0x0000DD05
673 #define UCOL_LAST_PRIMARY_IGNORABLE_CONT 0x000051C0
674 #define UCOL_FIRST_SECONDARY_IGNORABLE 0x00000000
675 #define UCOL_LAST_SECONDARY_IGNORABLE 0x00000500
676 #define UCOL_FIRST_TERTIARY_IGNORABLE 0x00000000
677 #define UCOL_LAST_TERTIARY_IGNORABLE 0x00000000
678 #define UCOL_FIRST_VARIABLE 0x05070505
679 #define UCOL_LAST_VARIABLE 0x179B0505
680 #define UCOL_FIRST_NON_VARIABLE 0x1A200505
681 #define UCOL_LAST_NON_VARIABLE 0x7B41058F
682
683 #define UCOL_NEXT_TOP_VALUE 0xE8960303
684 #define UCOL_NEXT_FIRST_PRIMARY_IGNORABLE 0x00008905
685 #define UCOL_NEXT_LAST_PRIMARY_IGNORABLE 0x03000303
686 #define UCOL_NEXT_FIRST_SECONDARY_IGNORABLE 0x00008705
687 #define UCOL_NEXT_LAST_SECONDARY_IGNORABLE 0x00000500
688 #define UCOL_NEXT_FIRST_TERTIARY_IGNORABLE 0x00000000
689 #define UCOL_NEXT_LAST_TERTIARY_IGNORABLE 0x00000000
690 #define UCOL_NEXT_FIRST_VARIABLE 0x05090505
691 #define UCOL_NEXT_LAST_VARIABLE 0x1A200505
692
693 #define PRIMARY_IMPLICIT_MIN 0xE8000000
694 #define PRIMARY_IMPLICIT_MAX 0xF0000000
695 #endif
696
697 /* These constants can be changed - sortkey size is affected by them */
698 #define UCOL_PROPORTION2 0.5
699 #define UCOL_PROPORTION3 0.667
700
701 /* These values come from the UCA */
702 #define UCOL_COMMON_BOT2 UCOL_BYTE_COMMON
703 #define UCOL_COMMON_TOP2 0x86u
704 #define UCOL_TOTAL2 (UCOL_COMMON_TOP2-UCOL_COMMON_BOT2-1)
705
706 #define UCOL_FLAG_BIT_MASK_CASE_SW_OFF 0x80
707 #define UCOL_FLAG_BIT_MASK_CASE_SW_ON 0x40
708 #define UCOL_COMMON_TOP3_CASE_SW_OFF 0x85
709 #define UCOL_COMMON_TOP3_CASE_SW_LOWER 0x45
710 #define UCOL_COMMON_TOP3_CASE_SW_UPPER 0xC5
711
712 /* These values come from the UCA */
713 #define UCOL_COMMON_BOT3 0x05
714
715 #define UCOL_COMMON_BOTTOM3_CASE_SW_UPPER 0x86;
716 #define UCOL_COMMON_BOTTOM3_CASE_SW_LOWER UCOL_COMMON_BOT3;
717
718 #define UCOL_TOP_COUNT2 (UCOL_PROPORTION2*UCOL_TOTAL2)
719 #define UCOL_BOT_COUNT2 (UCOL_TOTAL2-UCOL_TOP_COUNT2)
720
721
722 #define UCOL_COMMON2 UCOL_COMMON_BOT2
723 #define UCOL_COMMON3_UPPERFIRST 0xC5
724 #define UCOL_COMMON3_NORMAL UCOL_COMMON_BOT3
725
726 #define UCOL_COMMON4 0xFF
727
728 /* constants for case level/case first handling */
729 /* used to instantiate UCollators fields in ucol_updateInternalState */
730 #define UCOL_CASE_SWITCH 0xC0
731 #define UCOL_NO_CASE_SWITCH 0x00
732
733 #define UCOL_REMOVE_CASE 0x3F
734 #define UCOL_KEEP_CASE 0xFF
735
736 #define UCOL_CASE_BIT_MASK 0xC0
737
738 #define UCOL_TERT_CASE_MASK 0xFF
739
740 #define UCOL_ENDOFLATINONERANGE 0xFF
741 #define UCOL_LATINONETABLELEN (UCOL_ENDOFLATINONERANGE+50)
742 #define UCOL_BAIL_OUT_CE 0xFF000000
743
744
745 typedef enum {
746 NOT_FOUND_TAG = 0,
747 EXPANSION_TAG = 1, /* This code point results in an expansion */
748 CONTRACTION_TAG = 2, /* Start of a contraction */
749 THAI_TAG = 3, /* Thai character - do the reordering */
750 CHARSET_TAG = 4, /* Charset processing, not yet implemented */
751 SURROGATE_TAG = 5, /* Lead surrogate that is tailored and doesn't start a contraction */
752 HANGUL_SYLLABLE_TAG = 6, /* AC00-D7AF*/
753 LEAD_SURROGATE_TAG = 7, /* D800-DBFF*/
754 TRAIL_SURROGATE_TAG = 8, /* DC00-DFFF*/
755 CJK_IMPLICIT_TAG = 9, /* 0x3400-0x4DB5, 0x4E00-0x9FA5, 0xF900-0xFA2D*/
756 IMPLICIT_TAG = 10,
757 SPEC_PROC_TAG = 11,
758 /* ICU 2.1 */
759 LONG_PRIMARY_TAG = 12, /* This is a three byte primary with starting secondaries and tertiaries */
760 /* It fits in a single 32 bit CE and is used instead of expansion to save */
761 /* space without affecting the performance (hopefully) */
762
763 DIGIT_TAG = 13, /* COllate Digits As Numbers (CODAN) implementation */
764
765 CE_TAGS_COUNT
766 } UColCETags;
767
768 /*
769 *****************************************************************************************
770 * set to zero
771 * NON_CHARACTER FDD0 - FDEF, FFFE, FFFF, 1FFFE, 1FFFF, 2FFFE, 2FFFF,...e.g. **FFFE, **FFFF
772 ******************************************************************************************
773 */
774
775 typedef struct {
776 uint32_t variableTopValue;
777 /*UColAttributeValue*/ int32_t frenchCollation;
778 /*UColAttributeValue*/ int32_t alternateHandling; /* attribute for handling variable elements*/
779 /*UColAttributeValue*/ int32_t caseFirst; /* who goes first, lower case or uppercase */
780 /*UColAttributeValue*/ int32_t caseLevel; /* do we have an extra case level */
781 /*UColAttributeValue*/ int32_t normalizationMode; /* attribute for normalization */
782 /*UColAttributeValue*/ int32_t strength; /* attribute for strength */
783 /*UColAttributeValue*/ int32_t hiraganaQ; /* attribute for special Hiragana */
784 /*UColAttributeValue*/ int32_t numericCollation; /* attribute for numeric collation */
785 uint32_t reserved[15]; /* for future use */
786 } UColOptionSet;
787
788 typedef struct {
789 uint32_t UCA_FIRST_TERTIARY_IGNORABLE[2]; /*0x00000000*/
790 uint32_t UCA_LAST_TERTIARY_IGNORABLE[2]; /*0x00000000*/
791 uint32_t UCA_FIRST_PRIMARY_IGNORABLE[2]; /*0x00008705*/
792 uint32_t UCA_FIRST_SECONDARY_IGNORABLE[2]; /*0x00000000*/
793 uint32_t UCA_LAST_SECONDARY_IGNORABLE[2]; /*0x00000500*/
794 uint32_t UCA_LAST_PRIMARY_IGNORABLE[2]; /*0x0000DD05*/
795 uint32_t UCA_FIRST_VARIABLE[2]; /*0x05070505*/
796 uint32_t UCA_LAST_VARIABLE[2]; /*0x13CF0505*/
797 uint32_t UCA_FIRST_NON_VARIABLE[2]; /*0x16200505*/
798 uint32_t UCA_LAST_NON_VARIABLE[2]; /*0x767C0505*/
799 uint32_t UCA_RESET_TOP_VALUE[2]; /*0x9F000303*/
800 uint32_t UCA_FIRST_IMPLICIT[2];
801 uint32_t UCA_LAST_IMPLICIT[2];
802 uint32_t UCA_FIRST_TRAILING[2];
803 uint32_t UCA_LAST_TRAILING[2];
804
805 #if 0
806 uint32_t UCA_NEXT_TOP_VALUE[2]; /*0xE8960303*/
807 uint32_t UCA_NEXT_FIRST_PRIMARY_IGNORABLE; /*0x00008905*/
808 uint32_t UCA_NEXT_LAST_PRIMARY_IGNORABLE; /*0x03000303*/
809 uint32_t UCA_NEXT_FIRST_SECONDARY_IGNORABLE; /*0x00008705*/
810 uint32_t UCA_NEXT_LAST_SECONDARY_IGNORABLE; /*0x00000500*/
811 uint32_t UCA_NEXT_FIRST_TERTIARY_IGNORABLE; /*0x00000000*/
812 uint32_t UCA_NEXT_LAST_TERTIARY_IGNORABLE; /*0x00000000*/
813 uint32_t UCA_NEXT_FIRST_VARIABLE; /*0x05090505*/
814 uint32_t UCA_NEXT_LAST_VARIABLE; /*0x16200505*/
815 #endif
816
817 uint32_t UCA_PRIMARY_TOP_MIN;
818 uint32_t UCA_PRIMARY_IMPLICIT_MIN; /*0xE8000000*/
819 uint32_t UCA_PRIMARY_IMPLICIT_MAX; /*0xF0000000*/
820 uint32_t UCA_PRIMARY_TRAILING_MIN; /*0xE8000000*/
821 uint32_t UCA_PRIMARY_TRAILING_MAX; /*0xF0000000*/
822 uint32_t UCA_PRIMARY_SPECIAL_MIN; /*0xE8000000*/
823 uint32_t UCA_PRIMARY_SPECIAL_MAX; /*0xF0000000*/
824 } UCAConstants;
825
826 /* definition of UCATableHeader moved to common/ucol_data.h */
827
828 #define U_UNKNOWN_STATE 0
829 #define U_COLLATOR_STATE 0x01
830 #define U_STATE_LIMIT 0x02
831
832 /* This is the first structure in a state */
833 /* it should be machine independent */
834 typedef struct {
835 /* this structure is supposed to be readable on all the platforms.*/
836 /* first 2 fields hold the size of the structure in a platform independent way */
837 uint8_t sizeLo;
838 uint8_t sizeHi;
839 /* identifying the writing platform */
840 uint8_t isBigEndian;
841 /* see U_CHARSET_FAMILY values in utypes.h */
842 uint8_t charsetFamily;
843 /* version of ICU this state structure comes from */
844 uint8_t icuVersion[4];
845 /* What is the data following this state */
846 uint8_t type;
847 /* more stuff to come, keep it on 16 byte boundary */
848 uint8_t reserved[7];
849 } UStateStruct;
850
851 /* This structure follows UStatusStruct */
852 /* and contains data specific for the collators */
853 /* Endianess needs to be decided before accessing this structure */
854 /* However, it's size IS endianess independent */
855 typedef struct {
856 /* size of this structure */
857 uint8_t sizeLo;
858 uint8_t sizeHi;
859 /* This state is followed by the frozen tailoring */
860 uint8_t containsTailoring;
861 /* This state is followed by the frozen UCA */
862 uint8_t containsUCA;
863 /* Version info - the same one */
864 uint8_t versionInfo[4];
865
866 /* for charset CEs */
867 uint8_t charsetName[32];
868 /* this is the resolved locale name*/
869 uint8_t locale[32];
870
871 /* Attributes. Open ended */
872 /* all the following will be moved to uint32_t because of portability */
873 /* variable top value */
874 uint32_t variableTopValue;
875 /* attribute for handling variable elements*/
876 uint32_t /*UColAttributeValue*/ alternateHandling;
877 /* how to handle secondary weights */
878 uint32_t /*UColAttributeValue*/ frenchCollation;
879 /* who goes first, lower case or uppercase */
880 uint32_t /*UColAttributeValue*/ caseFirst;
881 /* do we have an extra case level */
882 uint32_t /*UColAttributeValue*/ caseLevel;
883 /* attribute for normalization */
884 uint32_t /*UColAttributeValue*/ normalizationMode;
885 /* attribute for strength */
886 uint32_t /*UColAttributeValue*/ strength;
887 /* to be immediately 16 byte aligned */
888 uint8_t reserved[12];
889 } UColStateStruct;
890
891 #define UCOL_INV_SIZEMASK 0xFFF00000
892 #define UCOL_INV_OFFSETMASK 0x000FFFFF
893 #define UCOL_INV_SHIFTVALUE 20
894
895 U_CDECL_BEGIN
896
897 /* definition of InverseUCATableHeader moved to common/ucol_data.h */
898
899 typedef void U_CALLCONV
900 ResourceCleaner(UCollator *coll);
901
902
903 struct UCollator {
904 UColOptionSet *options;
905 SortKeyGenerator *sortKeyGen;
906 uint32_t *latinOneCEs;
907 char* actualLocale;
908 char* validLocale;
909 char* requestedLocale;
910 const UChar *rules;
911 const UChar *ucaRules;
912 const UCollator *UCA;
913 const UCATableHeader *image;
914 UTrie mapping;
915 const uint32_t *latinOneMapping;
916 const uint32_t *expansion;
917 const UChar *contractionIndex;
918 const uint32_t *contractionCEs;
919
920 const uint32_t *endExpansionCE; /* array of last ces in an expansion ce.
921 corresponds to expansionCESize */
922 const uint32_t *lastEndExpansionCE;/* pointer to the last element in endExpansionCE */
923 const uint8_t *expansionCESize; /* array of the maximum size of a
924 expansion ce with the last ce
925 corresponding to endExpansionCE,
926 terminated with a null */
927 const uint8_t *unsafeCP; /* unsafe code points hashtable */
928 const uint8_t *contrEndCP; /* Contraction ending chars hash table */
929 UChar minUnsafeCP; /* Smallest unsafe Code Point. */
930 UChar minContrEndCP; /* Smallest code point at end of a contraction */
931
932 int32_t rulesLength;
933 int32_t latinOneTableLen;
934
935 uint32_t variableTopValue;
936 UColAttributeValue frenchCollation;
937 UColAttributeValue alternateHandling; /* attribute for handling variable elements*/
938 UColAttributeValue caseFirst; /* who goes first, lower case or uppercase */
939 UColAttributeValue caseLevel; /* do we have an extra case level */
940 UColAttributeValue normalizationMode; /* attribute for normalization */
941 UColAttributeValue strength; /* attribute for strength */
942 UColAttributeValue hiraganaQ; /* attribute for Hiragana */
943 UColAttributeValue numericCollation;
944 UBool variableTopValueisDefault;
945 UBool frenchCollationisDefault;
946 UBool alternateHandlingisDefault; /* attribute for handling variable elements*/
947 UBool caseFirstisDefault; /* who goes first, lower case or uppercase */
948 UBool caseLevelisDefault; /* do we have an extra case level */
949 UBool normalizationModeisDefault; /* attribute for normalization */
950 UBool strengthisDefault; /* attribute for strength */
951 UBool hiraganaQisDefault; /* attribute for Hiragana */
952 UBool numericCollationisDefault;
953 UBool hasRealData; /* some collators have only options, like French, no rules */
954 /* to speed up things, we use the UCA image, but we don't want it */
955 /* to run around */
956
957 UBool freeOnClose;
958 UBool freeOptionsOnClose;
959 UBool freeRulesOnClose;
960 UBool freeImageOnClose;
961 UBool freeDefaultReorderCodesOnClose;
962 UBool freeReorderCodesOnClose;
963 UBool freeLeadBytePermutationTableOnClose;
964
965 UBool latinOneUse;
966 UBool latinOneRegenTable;
967 UBool latinOneFailed;
968
969 int8_t tertiaryAddition; /* when switching case, we need to add or subtract different values */
970 uint8_t caseSwitch;
971 uint8_t tertiaryCommon;
972 uint8_t tertiaryMask;
973 uint8_t tertiaryTop; /* Upper range when compressing */
974 uint8_t tertiaryBottom; /* Upper range when compressing */
975 uint8_t tertiaryTopCount;
976 uint8_t tertiaryBottomCount;
977
978 UVersionInfo dataVersion; /* Data info of UCA table */
979 int32_t* defaultReorderCodes;
980 int32_t defaultReorderCodesLength;
981 int32_t* reorderCodes;
982 int32_t reorderCodesLength;
983 uint8_t* leadBytePermutationTable;
984 void *delegate; /* if non-null: C++ object to delegate all API calls to. */
985 };
986
987 U_CDECL_END
988
989 /* various internal functions */
990
991 /* do not close UCA returned by ucol_initUCA! */
992 U_CFUNC
993 UCollator* ucol_initUCA(UErrorCode *status);
994
995 U_CFUNC
996 UCollator* ucol_initCollator(const UCATableHeader *image, UCollator *fillIn, const UCollator *UCA, UErrorCode *status);
997
998 U_CFUNC
999 void ucol_setOptionsFromHeader(UCollator* result, UColOptionSet * opts, UErrorCode *status);
1000
1001 U_CFUNC
1002 UCollator* ucol_open_internal(const char* loc, UErrorCode* status);
1003
1004 #if 0
1005 U_CFUNC
1006 void ucol_putOptionsToHeader(UCollator* result, UColOptionSet * opts, UErrorCode *status);
1007 #endif
1008
1009 U_CFUNC
1010 void ucol_updateInternalState(UCollator *coll, UErrorCode *status);
1011
1012 U_CFUNC uint32_t U_EXPORT2 ucol_getFirstCE(const UCollator *coll, UChar u, UErrorCode *status);
1013 U_CAPI UBool U_EXPORT2 ucol_isTailored(const UCollator *coll, const UChar u, UErrorCode *status);
1014
1015 U_CAPI const InverseUCATableHeader* U_EXPORT2 ucol_initInverseUCA(UErrorCode *status);
1016
1017 U_CAPI void U_EXPORT2
1018 uprv_uca_initImplicitConstants(UErrorCode *status);
1019
1020 U_CAPI uint32_t U_EXPORT2
1021 uprv_uca_getImplicitFromRaw(UChar32 cp);
1022
1023 /*U_CFUNC uint32_t U_EXPORT2
1024 uprv_uca_getImplicitPrimary(UChar32 cp);*/
1025
1026 U_CAPI UChar32 U_EXPORT2
1027 uprv_uca_getRawFromImplicit(uint32_t implicit);
1028
1029 U_CAPI UChar32 U_EXPORT2
1030 uprv_uca_getRawFromCodePoint(UChar32 i);
1031
1032 U_CAPI UChar32 U_EXPORT2
1033 uprv_uca_getCodePointFromRaw(UChar32 i);
1034
1035 typedef const UChar* GetCollationRulesFunction(void* context, const char* locale, const char* type, int32_t* pLength, UErrorCode* status);
1036
1037 U_CAPI UCollator* U_EXPORT2
1038 ucol_openRulesForImport( const UChar *rules,
1039 int32_t rulesLength,
1040 UColAttributeValue normalizationMode,
1041 UCollationStrength strength,
1042 UParseError *parseError,
1043 GetCollationRulesFunction importFunc,
1044 void* context,
1045 UErrorCode *status);
1046
1047
1048 U_CFUNC void U_EXPORT2
1049 ucol_buildPermutationTable(UCollator *coll, UErrorCode *status);
1050
1051 U_CFUNC int U_EXPORT2
1052 ucol_getLeadBytesForReorderCode(const UCollator *uca, int reorderCode, uint16_t* returnLeadBytes, int returnCapacity);
1053
1054 U_CFUNC int U_EXPORT2
1055 ucol_getReorderCodesForLeadByte(const UCollator *uca, int leadByte, int16_t* returnReorderCodes, int returnCapacity);
1056
1057 #ifdef __cplusplus
1058 /*
1059 * Test whether a character is potentially "unsafe" for use as a collation
1060 * starting point. Unsafe chars are those with combining class != 0 plus
1061 * those that are the 2nd thru nth character in a contraction sequence.
1062 *
1063 * Function is in header file because it's used in both collation and string search,
1064 * and needs to be inline for performance.
1065 */
1066 static inline UBool ucol_unsafeCP(UChar c, const UCollator *coll) {
1067 int32_t hash;
1068 uint8_t htbyte;
1069
1070 if (c < coll->minUnsafeCP) {
1071 return FALSE;
1072 }
1073
1074 hash = c;
1075 if (hash >= UCOL_UNSAFECP_TABLE_SIZE*8) {
1076 if(U16_IS_SURROGATE(c)) {
1077 /* Lead or trail surrogate */
1078 /* These are always considered unsafe. */
1079 return TRUE;
1080 }
1081 hash = (hash & UCOL_UNSAFECP_TABLE_MASK) + 256;
1082 }
1083 htbyte = coll->unsafeCP[hash>>3];
1084 return ((htbyte >> (hash & 7)) & 1);
1085 }
1086 #endif /* __cplusplus */
1087
1088 /* The offsetBuffer in collIterate might need to be freed to avoid memory leaks. */
1089 void ucol_freeOffsetBuffer(U_NAMESPACE_QUALIFIER collIterate *s);
1090
1091 #endif /* #if !UCONFIG_NO_COLLATION */
1092
1093 #endif

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