1// © 2016 and later: Unicode, Inc. and others.
2// License & terms of use: http://www.unicode.org/copyright.html
3/*
4*******************************************************************************
5*
6* Copyright (C) 2002-2016, International Business Machines
7* Corporation and others. All Rights Reserved.
8*
9*******************************************************************************
10* file name: uprops.cpp
11* encoding: UTF-8
12* tab size: 8 (not used)
13* indentation:4
14*
15* created on: 2002feb24
16* created by: Markus W. Scherer
17*
18* Implementations for mostly non-core Unicode character properties
19* stored in uprops.icu.
20*
21* With the APIs implemented here, almost all properties files and
22* their associated implementation files are used from this file,
23* including those for normalization and case mappings.
24*/
25
26#include "unicode/utypes.h"
27#include "unicode/uchar.h"
28#include "unicode/ucptrie.h"
29#include "unicode/udata.h"
30#include "unicode/unorm2.h"
31#include "unicode/uscript.h"
32#include "unicode/ustring.h"
33#include "cstring.h"
34#include "mutex.h"
35#include "normalizer2impl.h"
36#include "umutex.h"
37#include "ubidi_props.h"
38#include "uprops.h"
39#include "ucase.h"
40#include "ucln_cmn.h"
41#include "ulayout_props.h"
42#include "ustr_imp.h"
43
44U_NAMESPACE_USE
45
46// Unicode text layout properties data -----------------------------------------
47
48namespace {
49
50icu::UInitOnce gLayoutInitOnce = U_INITONCE_INITIALIZER;
51UDataMemory *gLayoutMemory = nullptr;
52
53UCPTrie *gInpcTrie = nullptr; // Indic_Positional_Category
54UCPTrie *gInscTrie = nullptr; // Indic_Syllabic_Category
55UCPTrie *gVoTrie = nullptr; // Vertical_Orientation
56
57int32_t gMaxInpcValue = 0;
58int32_t gMaxInscValue = 0;
59int32_t gMaxVoValue = 0;
60
61UBool U_CALLCONV uprops_cleanup() {
62 udata_close(gLayoutMemory);
63 gLayoutMemory = nullptr;
64
65 ucptrie_close(gInpcTrie);
66 gInpcTrie = nullptr;
67 ucptrie_close(gInscTrie);
68 gInscTrie = nullptr;
69 ucptrie_close(gVoTrie);
70 gVoTrie = nullptr;
71
72 gMaxInpcValue = 0;
73 gMaxInscValue = 0;
74 gMaxVoValue = 0;
75
76 gLayoutInitOnce.reset();
77 return TRUE;
78}
79
80UBool U_CALLCONV
81ulayout_isAcceptable(void * /*context*/,
82 const char * /* type */, const char * /*name*/,
83 const UDataInfo *pInfo) {
84 return pInfo->size >= 20 &&
85 pInfo->isBigEndian == U_IS_BIG_ENDIAN &&
86 pInfo->charsetFamily == U_CHARSET_FAMILY &&
87 pInfo->dataFormat[0] == ULAYOUT_FMT_0 &&
88 pInfo->dataFormat[1] == ULAYOUT_FMT_1 &&
89 pInfo->dataFormat[2] == ULAYOUT_FMT_2 &&
90 pInfo->dataFormat[3] == ULAYOUT_FMT_3 &&
91 pInfo->formatVersion[0] == 1;
92}
93
94// UInitOnce singleton initialization function
95void U_CALLCONV ulayout_load(UErrorCode &errorCode) {
96 gLayoutMemory = udata_openChoice(
97 nullptr, ULAYOUT_DATA_TYPE, ULAYOUT_DATA_NAME,
98 ulayout_isAcceptable, nullptr, &errorCode);
99 if (U_FAILURE(errorCode)) { return; }
100
101 const uint8_t *inBytes = (const uint8_t *)udata_getMemory(gLayoutMemory);
102 const int32_t *inIndexes = (const int32_t *)inBytes;
103 int32_t indexesLength = inIndexes[ULAYOUT_IX_INDEXES_LENGTH];
104 if (indexesLength < 12) {
105 errorCode = U_INVALID_FORMAT_ERROR; // Not enough indexes.
106 return;
107 }
108 int32_t offset = indexesLength * 4;
109 int32_t top = inIndexes[ULAYOUT_IX_INPC_TRIE_TOP];
110 int32_t trieSize = top - offset;
111 if (trieSize >= 16) {
112 gInpcTrie = ucptrie_openFromBinary(
113 UCPTRIE_TYPE_ANY, UCPTRIE_VALUE_BITS_ANY,
114 inBytes + offset, trieSize, nullptr, &errorCode);
115 }
116 offset = top;
117 top = inIndexes[ULAYOUT_IX_INSC_TRIE_TOP];
118 trieSize = top - offset;
119 if (trieSize >= 16) {
120 gInscTrie = ucptrie_openFromBinary(
121 UCPTRIE_TYPE_ANY, UCPTRIE_VALUE_BITS_ANY,
122 inBytes + offset, trieSize, nullptr, &errorCode);
123 }
124 offset = top;
125 top = inIndexes[ULAYOUT_IX_VO_TRIE_TOP];
126 trieSize = top - offset;
127 if (trieSize >= 16) {
128 gVoTrie = ucptrie_openFromBinary(
129 UCPTRIE_TYPE_ANY, UCPTRIE_VALUE_BITS_ANY,
130 inBytes + offset, trieSize, nullptr, &errorCode);
131 }
132
133 uint32_t maxValues = inIndexes[ULAYOUT_IX_MAX_VALUES];
134 gMaxInpcValue = maxValues >> ULAYOUT_MAX_INPC_SHIFT;
135 gMaxInscValue = (maxValues >> ULAYOUT_MAX_INSC_SHIFT) & 0xff;
136 gMaxVoValue = (maxValues >> ULAYOUT_MAX_VO_SHIFT) & 0xff;
137
138 ucln_common_registerCleanup(UCLN_COMMON_UPROPS, uprops_cleanup);
139}
140
141UBool ulayout_ensureData(UErrorCode &errorCode) {
142 if (U_FAILURE(errorCode)) { return FALSE; }
143 umtx_initOnce(gLayoutInitOnce, &ulayout_load, errorCode);
144 return U_SUCCESS(errorCode);
145}
146
147UBool ulayout_ensureData() {
148 UErrorCode errorCode = U_ZERO_ERROR;
149 return ulayout_ensureData(errorCode);
150}
151
152} // namespace
153
154/* general properties API functions ----------------------------------------- */
155
156struct BinaryProperty;
157
158typedef UBool BinaryPropertyContains(const BinaryProperty &prop, UChar32 c, UProperty which);
159
160struct BinaryProperty {
161 int32_t column; // SRC_PROPSVEC column, or "source" if mask==0
162 uint32_t mask;
163 BinaryPropertyContains *contains;
164};
165
166static UBool defaultContains(const BinaryProperty &prop, UChar32 c, UProperty /*which*/) {
167 /* systematic, directly stored properties */
168 return (u_getUnicodeProperties(c, prop.column)&prop.mask)!=0;
169}
170
171static UBool caseBinaryPropertyContains(const BinaryProperty &/*prop*/, UChar32 c, UProperty which) {
172 return static_cast<UBool>(ucase_hasBinaryProperty(c, which));
173}
174
175static UBool isBidiControl(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
176 return ubidi_isBidiControl(c);
177}
178
179static UBool isMirrored(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
180 return ubidi_isMirrored(c);
181}
182
183static UBool isJoinControl(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
184 return ubidi_isJoinControl(c);
185}
186
187#if UCONFIG_NO_NORMALIZATION
188static UBool hasFullCompositionExclusion(const BinaryProperty &, UChar32, UProperty) {
189 return FALSE;
190}
191#else
192static UBool hasFullCompositionExclusion(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
193 // By definition, Full_Composition_Exclusion is the same as NFC_QC=No.
194 UErrorCode errorCode=U_ZERO_ERROR;
195 const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
196 return U_SUCCESS(errorCode) && impl->isCompNo(impl->getNorm16(c));
197}
198#endif
199
200// UCHAR_NF*_INERT properties
201#if UCONFIG_NO_NORMALIZATION
202static UBool isNormInert(const BinaryProperty &, UChar32, UProperty) {
203 return FALSE;
204}
205#else
206static UBool isNormInert(const BinaryProperty &/*prop*/, UChar32 c, UProperty which) {
207 UErrorCode errorCode=U_ZERO_ERROR;
208 const Normalizer2 *norm2=Normalizer2Factory::getInstance(
209 (UNormalizationMode)(which-UCHAR_NFD_INERT+UNORM_NFD), errorCode);
210 return U_SUCCESS(errorCode) && norm2->isInert(c);
211}
212#endif
213
214#if UCONFIG_NO_NORMALIZATION
215static UBool changesWhenCasefolded(const BinaryProperty &, UChar32, UProperty) {
216 return FALSE;
217}
218#else
219static UBool changesWhenCasefolded(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
220 UnicodeString nfd;
221 UErrorCode errorCode=U_ZERO_ERROR;
222 const Normalizer2 *nfcNorm2=Normalizer2::getNFCInstance(errorCode);
223 if(U_FAILURE(errorCode)) {
224 return FALSE;
225 }
226 if(nfcNorm2->getDecomposition(c, nfd)) {
227 /* c has a decomposition */
228 if(nfd.length()==1) {
229 c=nfd[0]; /* single BMP code point */
230 } else if(nfd.length()<=U16_MAX_LENGTH &&
231 nfd.length()==U16_LENGTH(c=nfd.char32At(0))
232 ) {
233 /* single supplementary code point */
234 } else {
235 c=U_SENTINEL;
236 }
237 } else if(c<0) {
238 return FALSE; /* protect against bad input */
239 }
240 if(c>=0) {
241 /* single code point */
242 const UChar *resultString;
243 return (UBool)(ucase_toFullFolding(c, &resultString, U_FOLD_CASE_DEFAULT)>=0);
244 } else {
245 /* guess some large but stack-friendly capacity */
246 UChar dest[2*UCASE_MAX_STRING_LENGTH];
247 int32_t destLength;
248 destLength=u_strFoldCase(dest, UPRV_LENGTHOF(dest),
249 nfd.getBuffer(), nfd.length(),
250 U_FOLD_CASE_DEFAULT, &errorCode);
251 return (UBool)(U_SUCCESS(errorCode) &&
252 0!=u_strCompare(nfd.getBuffer(), nfd.length(),
253 dest, destLength, FALSE));
254 }
255}
256#endif
257
258#if UCONFIG_NO_NORMALIZATION
259static UBool changesWhenNFKC_Casefolded(const BinaryProperty &, UChar32, UProperty) {
260 return FALSE;
261}
262#else
263static UBool changesWhenNFKC_Casefolded(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
264 UErrorCode errorCode=U_ZERO_ERROR;
265 const Normalizer2Impl *kcf=Normalizer2Factory::getNFKC_CFImpl(errorCode);
266 if(U_FAILURE(errorCode)) {
267 return FALSE;
268 }
269 UnicodeString src(c);
270 UnicodeString dest;
271 {
272 // The ReorderingBuffer must be in a block because its destructor
273 // needs to release dest's buffer before we look at its contents.
274 ReorderingBuffer buffer(*kcf, dest);
275 // Small destCapacity for NFKC_CF(c).
276 if(buffer.init(5, errorCode)) {
277 const UChar *srcArray=src.getBuffer();
278 kcf->compose(srcArray, srcArray+src.length(), FALSE,
279 TRUE, buffer, errorCode);
280 }
281 }
282 return U_SUCCESS(errorCode) && dest!=src;
283}
284#endif
285
286#if UCONFIG_NO_NORMALIZATION
287static UBool isCanonSegmentStarter(const BinaryProperty &, UChar32, UProperty) {
288 return FALSE;
289}
290#else
291static UBool isCanonSegmentStarter(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
292 UErrorCode errorCode=U_ZERO_ERROR;
293 const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
294 return
295 U_SUCCESS(errorCode) && impl->ensureCanonIterData(errorCode) &&
296 impl->isCanonSegmentStarter(c);
297}
298#endif
299
300static UBool isPOSIX_alnum(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
301 return u_isalnumPOSIX(c);
302}
303
304static UBool isPOSIX_blank(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
305 return u_isblank(c);
306}
307
308static UBool isPOSIX_graph(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
309 return u_isgraphPOSIX(c);
310}
311
312static UBool isPOSIX_print(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
313 return u_isprintPOSIX(c);
314}
315
316static UBool isPOSIX_xdigit(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
317 return u_isxdigit(c);
318}
319
320static UBool isRegionalIndicator(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
321 // Property starts are a subset of lb=RI etc.
322 return 0x1F1E6<=c && c<=0x1F1FF;
323}
324
325static const BinaryProperty binProps[UCHAR_BINARY_LIMIT]={
326 /*
327 * column and mask values for binary properties from u_getUnicodeProperties().
328 * Must be in order of corresponding UProperty,
329 * and there must be exactly one entry per binary UProperty.
330 *
331 * Properties with mask==0 are handled in code.
332 * For them, column is the UPropertySource value.
333 */
334 { 1, U_MASK(UPROPS_ALPHABETIC), defaultContains },
335 { 1, U_MASK(UPROPS_ASCII_HEX_DIGIT), defaultContains },
336 { UPROPS_SRC_BIDI, 0, isBidiControl },
337 { UPROPS_SRC_BIDI, 0, isMirrored },
338 { 1, U_MASK(UPROPS_DASH), defaultContains },
339 { 1, U_MASK(UPROPS_DEFAULT_IGNORABLE_CODE_POINT), defaultContains },
340 { 1, U_MASK(UPROPS_DEPRECATED), defaultContains },
341 { 1, U_MASK(UPROPS_DIACRITIC), defaultContains },
342 { 1, U_MASK(UPROPS_EXTENDER), defaultContains },
343 { UPROPS_SRC_NFC, 0, hasFullCompositionExclusion },
344 { 1, U_MASK(UPROPS_GRAPHEME_BASE), defaultContains },
345 { 1, U_MASK(UPROPS_GRAPHEME_EXTEND), defaultContains },
346 { 1, U_MASK(UPROPS_GRAPHEME_LINK), defaultContains },
347 { 1, U_MASK(UPROPS_HEX_DIGIT), defaultContains },
348 { 1, U_MASK(UPROPS_HYPHEN), defaultContains },
349 { 1, U_MASK(UPROPS_ID_CONTINUE), defaultContains },
350 { 1, U_MASK(UPROPS_ID_START), defaultContains },
351 { 1, U_MASK(UPROPS_IDEOGRAPHIC), defaultContains },
352 { 1, U_MASK(UPROPS_IDS_BINARY_OPERATOR), defaultContains },
353 { 1, U_MASK(UPROPS_IDS_TRINARY_OPERATOR), defaultContains },
354 { UPROPS_SRC_BIDI, 0, isJoinControl },
355 { 1, U_MASK(UPROPS_LOGICAL_ORDER_EXCEPTION), defaultContains },
356 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_LOWERCASE
357 { 1, U_MASK(UPROPS_MATH), defaultContains },
358 { 1, U_MASK(UPROPS_NONCHARACTER_CODE_POINT), defaultContains },
359 { 1, U_MASK(UPROPS_QUOTATION_MARK), defaultContains },
360 { 1, U_MASK(UPROPS_RADICAL), defaultContains },
361 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_SOFT_DOTTED
362 { 1, U_MASK(UPROPS_TERMINAL_PUNCTUATION), defaultContains },
363 { 1, U_MASK(UPROPS_UNIFIED_IDEOGRAPH), defaultContains },
364 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_UPPERCASE
365 { 1, U_MASK(UPROPS_WHITE_SPACE), defaultContains },
366 { 1, U_MASK(UPROPS_XID_CONTINUE), defaultContains },
367 { 1, U_MASK(UPROPS_XID_START), defaultContains },
368 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CASE_SENSITIVE
369 { 1, U_MASK(UPROPS_S_TERM), defaultContains },
370 { 1, U_MASK(UPROPS_VARIATION_SELECTOR), defaultContains },
371 { UPROPS_SRC_NFC, 0, isNormInert }, // UCHAR_NFD_INERT
372 { UPROPS_SRC_NFKC, 0, isNormInert }, // UCHAR_NFKD_INERT
373 { UPROPS_SRC_NFC, 0, isNormInert }, // UCHAR_NFC_INERT
374 { UPROPS_SRC_NFKC, 0, isNormInert }, // UCHAR_NFKC_INERT
375 { UPROPS_SRC_NFC_CANON_ITER, 0, isCanonSegmentStarter },
376 { 1, U_MASK(UPROPS_PATTERN_SYNTAX), defaultContains },
377 { 1, U_MASK(UPROPS_PATTERN_WHITE_SPACE), defaultContains },
378 { UPROPS_SRC_CHAR_AND_PROPSVEC, 0, isPOSIX_alnum },
379 { UPROPS_SRC_CHAR, 0, isPOSIX_blank },
380 { UPROPS_SRC_CHAR, 0, isPOSIX_graph },
381 { UPROPS_SRC_CHAR, 0, isPOSIX_print },
382 { UPROPS_SRC_CHAR, 0, isPOSIX_xdigit },
383 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CASED
384 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CASE_IGNORABLE
385 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CHANGES_WHEN_LOWERCASED
386 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CHANGES_WHEN_UPPERCASED
387 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CHANGES_WHEN_TITLECASED
388 { UPROPS_SRC_CASE_AND_NORM, 0, changesWhenCasefolded },
389 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CHANGES_WHEN_CASEMAPPED
390 { UPROPS_SRC_NFKC_CF, 0, changesWhenNFKC_Casefolded },
391 { 2, U_MASK(UPROPS_2_EMOJI), defaultContains },
392 { 2, U_MASK(UPROPS_2_EMOJI_PRESENTATION), defaultContains },
393 { 2, U_MASK(UPROPS_2_EMOJI_MODIFIER), defaultContains },
394 { 2, U_MASK(UPROPS_2_EMOJI_MODIFIER_BASE), defaultContains },
395 { 2, U_MASK(UPROPS_2_EMOJI_COMPONENT), defaultContains },
396 { 2, 0, isRegionalIndicator },
397 { 1, U_MASK(UPROPS_PREPENDED_CONCATENATION_MARK), defaultContains },
398 { 2, U_MASK(UPROPS_2_EXTENDED_PICTOGRAPHIC), defaultContains },
399};
400
401U_CAPI UBool U_EXPORT2
402u_hasBinaryProperty(UChar32 c, UProperty which) {
403 /* c is range-checked in the functions that are called from here */
404 if(which<UCHAR_BINARY_START || UCHAR_BINARY_LIMIT<=which) {
405 /* not a known binary property */
406 return FALSE;
407 } else {
408 const BinaryProperty &prop=binProps[which];
409 return prop.contains(prop, c, which);
410 }
411}
412
413struct IntProperty;
414
415typedef int32_t IntPropertyGetValue(const IntProperty &prop, UChar32 c, UProperty which);
416typedef int32_t IntPropertyGetMaxValue(const IntProperty &prop, UProperty which);
417
418struct IntProperty {
419 int32_t column; // SRC_PROPSVEC column, or "source" if mask==0
420 uint32_t mask;
421 int32_t shift; // =maxValue if getMaxValueFromShift() is used
422 IntPropertyGetValue *getValue;
423 IntPropertyGetMaxValue *getMaxValue;
424};
425
426static int32_t defaultGetValue(const IntProperty &prop, UChar32 c, UProperty /*which*/) {
427 /* systematic, directly stored properties */
428 return (int32_t)(u_getUnicodeProperties(c, prop.column)&prop.mask)>>prop.shift;
429}
430
431static int32_t defaultGetMaxValue(const IntProperty &prop, UProperty /*which*/) {
432 return (uprv_getMaxValues(prop.column)&prop.mask)>>prop.shift;
433}
434
435static int32_t getMaxValueFromShift(const IntProperty &prop, UProperty /*which*/) {
436 return prop.shift;
437}
438
439static int32_t getBiDiClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
440 return (int32_t)u_charDirection(c);
441}
442
443static int32_t getBiDiPairedBracketType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
444 return (int32_t)ubidi_getPairedBracketType(c);
445}
446
447static int32_t biDiGetMaxValue(const IntProperty &/*prop*/, UProperty which) {
448 return ubidi_getMaxValue(which);
449}
450
451#if UCONFIG_NO_NORMALIZATION
452static int32_t getCombiningClass(const IntProperty &, UChar32, UProperty) {
453 return 0;
454}
455#else
456static int32_t getCombiningClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
457 return u_getCombiningClass(c);
458}
459#endif
460
461static int32_t getGeneralCategory(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
462 return (int32_t)u_charType(c);
463}
464
465static int32_t getJoiningGroup(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
466 return ubidi_getJoiningGroup(c);
467}
468
469static int32_t getJoiningType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
470 return ubidi_getJoiningType(c);
471}
472
473static int32_t getNumericType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
474 int32_t ntv=(int32_t)GET_NUMERIC_TYPE_VALUE(u_getMainProperties(c));
475 return UPROPS_NTV_GET_TYPE(ntv);
476}
477
478static int32_t getScript(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
479 UErrorCode errorCode=U_ZERO_ERROR;
480 return (int32_t)uscript_getScript(c, &errorCode);
481}
482
483/*
484 * Map some of the Grapheme Cluster Break values to Hangul Syllable Types.
485 * Hangul_Syllable_Type is fully redundant with a subset of Grapheme_Cluster_Break.
486 */
487static const UHangulSyllableType gcbToHst[]={
488 U_HST_NOT_APPLICABLE, /* U_GCB_OTHER */
489 U_HST_NOT_APPLICABLE, /* U_GCB_CONTROL */
490 U_HST_NOT_APPLICABLE, /* U_GCB_CR */
491 U_HST_NOT_APPLICABLE, /* U_GCB_EXTEND */
492 U_HST_LEADING_JAMO, /* U_GCB_L */
493 U_HST_NOT_APPLICABLE, /* U_GCB_LF */
494 U_HST_LV_SYLLABLE, /* U_GCB_LV */
495 U_HST_LVT_SYLLABLE, /* U_GCB_LVT */
496 U_HST_TRAILING_JAMO, /* U_GCB_T */
497 U_HST_VOWEL_JAMO /* U_GCB_V */
498 /*
499 * Omit GCB values beyond what we need for hst.
500 * The code below checks for the array length.
501 */
502};
503
504static int32_t getHangulSyllableType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
505 /* see comments on gcbToHst[] above */
506 int32_t gcb=(int32_t)(u_getUnicodeProperties(c, 2)&UPROPS_GCB_MASK)>>UPROPS_GCB_SHIFT;
507 if(gcb<UPRV_LENGTHOF(gcbToHst)) {
508 return gcbToHst[gcb];
509 } else {
510 return U_HST_NOT_APPLICABLE;
511 }
512}
513
514#if UCONFIG_NO_NORMALIZATION
515static int32_t getNormQuickCheck(const IntProperty &, UChar32, UProperty) {
516 return 0;
517}
518#else
519static int32_t getNormQuickCheck(const IntProperty &/*prop*/, UChar32 c, UProperty which) {
520 return (int32_t)unorm_getQuickCheck(c, (UNormalizationMode)(which-UCHAR_NFD_QUICK_CHECK+UNORM_NFD));
521}
522#endif
523
524#if UCONFIG_NO_NORMALIZATION
525static int32_t getLeadCombiningClass(const IntProperty &, UChar32, UProperty) {
526 return 0;
527}
528#else
529static int32_t getLeadCombiningClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
530 return unorm_getFCD16(c)>>8;
531}
532#endif
533
534#if UCONFIG_NO_NORMALIZATION
535static int32_t getTrailCombiningClass(const IntProperty &, UChar32, UProperty) {
536 return 0;
537}
538#else
539static int32_t getTrailCombiningClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
540 return unorm_getFCD16(c)&0xff;
541}
542#endif
543
544static int32_t getInPC(const IntProperty &, UChar32 c, UProperty) {
545 return ulayout_ensureData() && gInpcTrie != nullptr ? ucptrie_get(gInpcTrie, c) : 0;
546}
547
548static int32_t getInSC(const IntProperty &, UChar32 c, UProperty) {
549 return ulayout_ensureData() && gInscTrie != nullptr ? ucptrie_get(gInscTrie, c) : 0;
550}
551
552static int32_t getVo(const IntProperty &, UChar32 c, UProperty) {
553 return ulayout_ensureData() && gVoTrie != nullptr ? ucptrie_get(gVoTrie, c) : 0;
554}
555
556static int32_t layoutGetMaxValue(const IntProperty &/*prop*/, UProperty which) {
557 if (!ulayout_ensureData()) { return 0; }
558 switch (which) {
559 case UCHAR_INDIC_POSITIONAL_CATEGORY:
560 return gMaxInpcValue;
561 case UCHAR_INDIC_SYLLABIC_CATEGORY:
562 return gMaxInscValue;
563 case UCHAR_VERTICAL_ORIENTATION:
564 return gMaxVoValue;
565 default:
566 return 0;
567 }
568}
569
570static const IntProperty intProps[UCHAR_INT_LIMIT-UCHAR_INT_START]={
571 /*
572 * column, mask and shift values for int-value properties from u_getUnicodeProperties().
573 * Must be in order of corresponding UProperty,
574 * and there must be exactly one entry per int UProperty.
575 *
576 * Properties with mask==0 are handled in code.
577 * For them, column is the UPropertySource value.
578 */
579 { UPROPS_SRC_BIDI, 0, 0, getBiDiClass, biDiGetMaxValue },
580 { 0, UPROPS_BLOCK_MASK, UPROPS_BLOCK_SHIFT, defaultGetValue, defaultGetMaxValue },
581 { UPROPS_SRC_NFC, 0, 0xff, getCombiningClass, getMaxValueFromShift },
582 { 2, UPROPS_DT_MASK, 0, defaultGetValue, defaultGetMaxValue },
583 { 0, UPROPS_EA_MASK, UPROPS_EA_SHIFT, defaultGetValue, defaultGetMaxValue },
584 { UPROPS_SRC_CHAR, 0, (int32_t)U_CHAR_CATEGORY_COUNT-1,getGeneralCategory, getMaxValueFromShift },
585 { UPROPS_SRC_BIDI, 0, 0, getJoiningGroup, biDiGetMaxValue },
586 { UPROPS_SRC_BIDI, 0, 0, getJoiningType, biDiGetMaxValue },
587 { 2, UPROPS_LB_MASK, UPROPS_LB_SHIFT, defaultGetValue, defaultGetMaxValue },
588 { UPROPS_SRC_CHAR, 0, (int32_t)U_NT_COUNT-1, getNumericType, getMaxValueFromShift },
589 { 0, UPROPS_SCRIPT_MASK, 0, getScript, defaultGetMaxValue },
590 { UPROPS_SRC_PROPSVEC, 0, (int32_t)U_HST_COUNT-1, getHangulSyllableType, getMaxValueFromShift },
591 // UCHAR_NFD_QUICK_CHECK: max=1=YES -- never "maybe", only "no" or "yes"
592 { UPROPS_SRC_NFC, 0, (int32_t)UNORM_YES, getNormQuickCheck, getMaxValueFromShift },
593 // UCHAR_NFKD_QUICK_CHECK: max=1=YES -- never "maybe", only "no" or "yes"
594 { UPROPS_SRC_NFKC, 0, (int32_t)UNORM_YES, getNormQuickCheck, getMaxValueFromShift },
595 // UCHAR_NFC_QUICK_CHECK: max=2=MAYBE
596 { UPROPS_SRC_NFC, 0, (int32_t)UNORM_MAYBE, getNormQuickCheck, getMaxValueFromShift },
597 // UCHAR_NFKC_QUICK_CHECK: max=2=MAYBE
598 { UPROPS_SRC_NFKC, 0, (int32_t)UNORM_MAYBE, getNormQuickCheck, getMaxValueFromShift },
599 { UPROPS_SRC_NFC, 0, 0xff, getLeadCombiningClass, getMaxValueFromShift },
600 { UPROPS_SRC_NFC, 0, 0xff, getTrailCombiningClass, getMaxValueFromShift },
601 { 2, UPROPS_GCB_MASK, UPROPS_GCB_SHIFT, defaultGetValue, defaultGetMaxValue },
602 { 2, UPROPS_SB_MASK, UPROPS_SB_SHIFT, defaultGetValue, defaultGetMaxValue },
603 { 2, UPROPS_WB_MASK, UPROPS_WB_SHIFT, defaultGetValue, defaultGetMaxValue },
604 { UPROPS_SRC_BIDI, 0, 0, getBiDiPairedBracketType, biDiGetMaxValue },
605 { UPROPS_SRC_INPC, 0, 0, getInPC, layoutGetMaxValue },
606 { UPROPS_SRC_INSC, 0, 0, getInSC, layoutGetMaxValue },
607 { UPROPS_SRC_VO, 0, 0, getVo, layoutGetMaxValue },
608};
609
610U_CAPI int32_t U_EXPORT2
611u_getIntPropertyValue(UChar32 c, UProperty which) {
612 if(which<UCHAR_INT_START) {
613 if(UCHAR_BINARY_START<=which && which<UCHAR_BINARY_LIMIT) {
614 const BinaryProperty &prop=binProps[which];
615 return prop.contains(prop, c, which);
616 }
617 } else if(which<UCHAR_INT_LIMIT) {
618 const IntProperty &prop=intProps[which-UCHAR_INT_START];
619 return prop.getValue(prop, c, which);
620 } else if(which==UCHAR_GENERAL_CATEGORY_MASK) {
621 return U_MASK(u_charType(c));
622 }
623 return 0; // undefined
624}
625
626U_CAPI int32_t U_EXPORT2
627u_getIntPropertyMinValue(UProperty /*which*/) {
628 return 0; /* all binary/enum/int properties have a minimum value of 0 */
629}
630
631U_CAPI int32_t U_EXPORT2
632u_getIntPropertyMaxValue(UProperty which) {
633 if(which<UCHAR_INT_START) {
634 if(UCHAR_BINARY_START<=which && which<UCHAR_BINARY_LIMIT) {
635 return 1; // maximum TRUE for all binary properties
636 }
637 } else if(which<UCHAR_INT_LIMIT) {
638 const IntProperty &prop=intProps[which-UCHAR_INT_START];
639 return prop.getMaxValue(prop, which);
640 }
641 return -1; // undefined
642}
643
644U_CFUNC UPropertySource U_EXPORT2
645uprops_getSource(UProperty which) {
646 if(which<UCHAR_BINARY_START) {
647 return UPROPS_SRC_NONE; /* undefined */
648 } else if(which<UCHAR_BINARY_LIMIT) {
649 const BinaryProperty &prop=binProps[which];
650 if(prop.mask!=0) {
651 return UPROPS_SRC_PROPSVEC;
652 } else {
653 return (UPropertySource)prop.column;
654 }
655 } else if(which<UCHAR_INT_START) {
656 return UPROPS_SRC_NONE; /* undefined */
657 } else if(which<UCHAR_INT_LIMIT) {
658 const IntProperty &prop=intProps[which-UCHAR_INT_START];
659 if(prop.mask!=0) {
660 return UPROPS_SRC_PROPSVEC;
661 } else {
662 return (UPropertySource)prop.column;
663 }
664 } else if(which<UCHAR_STRING_START) {
665 switch(which) {
666 case UCHAR_GENERAL_CATEGORY_MASK:
667 case UCHAR_NUMERIC_VALUE:
668 return UPROPS_SRC_CHAR;
669
670 default:
671 return UPROPS_SRC_NONE;
672 }
673 } else if(which<UCHAR_STRING_LIMIT) {
674 switch(which) {
675 case UCHAR_AGE:
676 return UPROPS_SRC_PROPSVEC;
677
678 case UCHAR_BIDI_MIRRORING_GLYPH:
679 return UPROPS_SRC_BIDI;
680
681 case UCHAR_CASE_FOLDING:
682 case UCHAR_LOWERCASE_MAPPING:
683 case UCHAR_SIMPLE_CASE_FOLDING:
684 case UCHAR_SIMPLE_LOWERCASE_MAPPING:
685 case UCHAR_SIMPLE_TITLECASE_MAPPING:
686 case UCHAR_SIMPLE_UPPERCASE_MAPPING:
687 case UCHAR_TITLECASE_MAPPING:
688 case UCHAR_UPPERCASE_MAPPING:
689 return UPROPS_SRC_CASE;
690
691 case UCHAR_ISO_COMMENT:
692 case UCHAR_NAME:
693 case UCHAR_UNICODE_1_NAME:
694 return UPROPS_SRC_NAMES;
695
696 default:
697 return UPROPS_SRC_NONE;
698 }
699 } else {
700 switch(which) {
701 case UCHAR_SCRIPT_EXTENSIONS:
702 return UPROPS_SRC_PROPSVEC;
703 default:
704 return UPROPS_SRC_NONE; /* undefined */
705 }
706 }
707}
708
709U_CFUNC void U_EXPORT2
710uprops_addPropertyStarts(UPropertySource src, const USetAdder *sa, UErrorCode *pErrorCode) {
711 if (!ulayout_ensureData(*pErrorCode)) { return; }
712 const UCPTrie *trie;
713 switch (src) {
714 case UPROPS_SRC_INPC:
715 trie = gInpcTrie;
716 break;
717 case UPROPS_SRC_INSC:
718 trie = gInscTrie;
719 break;
720 case UPROPS_SRC_VO:
721 trie = gVoTrie;
722 break;
723 default:
724 *pErrorCode = U_ILLEGAL_ARGUMENT_ERROR;
725 return;
726 }
727
728 if (trie == nullptr) {
729 *pErrorCode = U_MISSING_RESOURCE_ERROR;
730 return;
731 }
732
733 // Add the start code point of each same-value range of the trie.
734 UChar32 start = 0, end;
735 while ((end = ucptrie_getRange(trie, start, UCPMAP_RANGE_NORMAL, 0,
736 nullptr, nullptr, nullptr)) >= 0) {
737 sa->add(sa->set, start);
738 start = end + 1;
739 }
740}
741
742#if !UCONFIG_NO_NORMALIZATION
743
744U_CAPI int32_t U_EXPORT2
745u_getFC_NFKC_Closure(UChar32 c, UChar *dest, int32_t destCapacity, UErrorCode *pErrorCode) {
746 if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
747 return 0;
748 }
749 if(destCapacity<0 || (dest==NULL && destCapacity>0)) {
750 *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
751 return 0;
752 }
753 // Compute the FC_NFKC_Closure on the fly:
754 // We have the API for complete coverage of Unicode properties, although
755 // this value by itself is not useful via API.
756 // (What could be useful is a custom normalization table that combines
757 // case folding and NFKC.)
758 // For the derivation, see Unicode's DerivedNormalizationProps.txt.
759 const Normalizer2 *nfkc=Normalizer2::getNFKCInstance(*pErrorCode);
760 if(U_FAILURE(*pErrorCode)) {
761 return 0;
762 }
763 // first: b = NFKC(Fold(a))
764 UnicodeString folded1String;
765 const UChar *folded1;
766 int32_t folded1Length=ucase_toFullFolding(c, &folded1, U_FOLD_CASE_DEFAULT);
767 if(folded1Length<0) {
768 const Normalizer2Impl *nfkcImpl=Normalizer2Factory::getImpl(nfkc);
769 if(nfkcImpl->getCompQuickCheck(nfkcImpl->getNorm16(c))!=UNORM_NO) {
770 return u_terminateUChars(dest, destCapacity, 0, pErrorCode); // c does not change at all under CaseFolding+NFKC
771 }
772 folded1String.setTo(c);
773 } else {
774 if(folded1Length>UCASE_MAX_STRING_LENGTH) {
775 folded1String.setTo(folded1Length);
776 } else {
777 folded1String.setTo(FALSE, folded1, folded1Length);
778 }
779 }
780 UnicodeString kc1=nfkc->normalize(folded1String, *pErrorCode);
781 // second: c = NFKC(Fold(b))
782 UnicodeString folded2String(kc1);
783 UnicodeString kc2=nfkc->normalize(folded2String.foldCase(), *pErrorCode);
784 // if (c != b) add the mapping from a to c
785 if(U_FAILURE(*pErrorCode) || kc1==kc2) {
786 return u_terminateUChars(dest, destCapacity, 0, pErrorCode);
787 } else {
788 return kc2.extract(dest, destCapacity, *pErrorCode);
789 }
790}
791
792#endif
793