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comparison: intl/icu/source/common/uprops.cpp

intl/icu/source/common/uprops.cpp

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1 /*
2 *******************************************************************************
3 *
4 * Copyright (C) 2002-2013, International Business Machines
5 * Corporation and others. All Rights Reserved.
6 *
7 *******************************************************************************
8 * file name: uprops.cpp
9 * encoding: US-ASCII
10 * tab size: 8 (not used)
11 * indentation:4
12 *
13 * created on: 2002feb24
14 * created by: Markus W. Scherer
15 *
16 * Implementations for mostly non-core Unicode character properties
17 * stored in uprops.icu.
18 *
19 * With the APIs implemented here, almost all properties files and
20 * their associated implementation files are used from this file,
21 * including those for normalization and case mappings.
22 */
23
24 #include "unicode/utypes.h"
25 #include "unicode/uchar.h"
26 #include "unicode/unorm2.h"
27 #include "unicode/uscript.h"
28 #include "unicode/ustring.h"
29 #include "cstring.h"
30 #include "normalizer2impl.h"
31 #include "ucln_cmn.h"
32 #include "umutex.h"
33 #include "ubidi_props.h"
34 #include "uprops.h"
35 #include "ucase.h"
36 #include "ustr_imp.h"
37
38 #define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0]))
39
40 U_NAMESPACE_USE
41
42 #define GET_BIDI_PROPS() ubidi_getSingleton()
43
44 /* general properties API functions ----------------------------------------- */
45
46 struct BinaryProperty;
47
48 typedef UBool BinaryPropertyContains(const BinaryProperty &prop, UChar32 c, UProperty which);
49
50 struct BinaryProperty {
51 int32_t column; // SRC_PROPSVEC column, or "source" if mask==0
52 uint32_t mask;
53 BinaryPropertyContains *contains;
54 };
55
56 static UBool defaultContains(const BinaryProperty &prop, UChar32 c, UProperty /*which*/) {
57 /* systematic, directly stored properties */
58 return (u_getUnicodeProperties(c, prop.column)&prop.mask)!=0;
59 }
60
61 static UBool caseBinaryPropertyContains(const BinaryProperty &/*prop*/, UChar32 c, UProperty which) {
62 return ucase_hasBinaryProperty(c, which);
63 }
64
65 static UBool isBidiControl(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
66 return ubidi_isBidiControl(GET_BIDI_PROPS(), c);
67 }
68
69 static UBool isMirrored(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
70 return ubidi_isMirrored(GET_BIDI_PROPS(), c);
71 }
72
73 static UBool isJoinControl(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
74 return ubidi_isJoinControl(GET_BIDI_PROPS(), c);
75 }
76
77 #if UCONFIG_NO_NORMALIZATION
78 static UBool hasFullCompositionExclusion(const BinaryProperty &, UChar32, UProperty) {
79 return FALSE;
80 }
81 #else
82 static UBool hasFullCompositionExclusion(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
83 // By definition, Full_Composition_Exclusion is the same as NFC_QC=No.
84 UErrorCode errorCode=U_ZERO_ERROR;
85 const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
86 return U_SUCCESS(errorCode) && impl->isCompNo(impl->getNorm16(c));
87 }
88 #endif
89
90 // UCHAR_NF*_INERT properties
91 #if UCONFIG_NO_NORMALIZATION
92 static UBool isNormInert(const BinaryProperty &, UChar32, UProperty) {
93 return FALSE;
94 }
95 #else
96 static UBool isNormInert(const BinaryProperty &/*prop*/, UChar32 c, UProperty which) {
97 UErrorCode errorCode=U_ZERO_ERROR;
98 const Normalizer2 *norm2=Normalizer2Factory::getInstance(
99 (UNormalizationMode)(which-UCHAR_NFD_INERT+UNORM_NFD), errorCode);
100 return U_SUCCESS(errorCode) && norm2->isInert(c);
101 }
102 #endif
103
104 #if UCONFIG_NO_NORMALIZATION
105 static UBool changesWhenCasefolded(const BinaryProperty &, UChar32, UProperty) {
106 return FALSE;
107 }
108 #else
109 static UBool changesWhenCasefolded(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
110 UnicodeString nfd;
111 UErrorCode errorCode=U_ZERO_ERROR;
112 const Normalizer2 *nfcNorm2=Normalizer2Factory::getNFCInstance(errorCode);
113 if(U_FAILURE(errorCode)) {
114 return FALSE;
115 }
116 if(nfcNorm2->getDecomposition(c, nfd)) {
117 /* c has a decomposition */
118 if(nfd.length()==1) {
119 c=nfd[0]; /* single BMP code point */
120 } else if(nfd.length()<=U16_MAX_LENGTH &&
121 nfd.length()==U16_LENGTH(c=nfd.char32At(0))
122 ) {
123 /* single supplementary code point */
124 } else {
125 c=U_SENTINEL;
126 }
127 } else if(c<0) {
128 return FALSE; /* protect against bad input */
129 }
130 if(c>=0) {
131 /* single code point */
132 const UCaseProps *csp=ucase_getSingleton();
133 const UChar *resultString;
134 return (UBool)(ucase_toFullFolding(csp, c, &resultString, U_FOLD_CASE_DEFAULT)>=0);
135 } else {
136 /* guess some large but stack-friendly capacity */
137 UChar dest[2*UCASE_MAX_STRING_LENGTH];
138 int32_t destLength;
139 destLength=u_strFoldCase(dest, LENGTHOF(dest),
140 nfd.getBuffer(), nfd.length(),
141 U_FOLD_CASE_DEFAULT, &errorCode);
142 return (UBool)(U_SUCCESS(errorCode) &&
143 0!=u_strCompare(nfd.getBuffer(), nfd.length(),
144 dest, destLength, FALSE));
145 }
146 }
147 #endif
148
149 #if UCONFIG_NO_NORMALIZATION
150 static UBool changesWhenNFKC_Casefolded(const BinaryProperty &, UChar32, UProperty) {
151 return FALSE;
152 }
153 #else
154 static UBool changesWhenNFKC_Casefolded(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
155 UErrorCode errorCode=U_ZERO_ERROR;
156 const Normalizer2Impl *kcf=Normalizer2Factory::getNFKC_CFImpl(errorCode);
157 if(U_FAILURE(errorCode)) {
158 return FALSE;
159 }
160 UnicodeString src(c);
161 UnicodeString dest;
162 {
163 // The ReorderingBuffer must be in a block because its destructor
164 // needs to release dest's buffer before we look at its contents.
165 ReorderingBuffer buffer(*kcf, dest);
166 // Small destCapacity for NFKC_CF(c).
167 if(buffer.init(5, errorCode)) {
168 const UChar *srcArray=src.getBuffer();
169 kcf->compose(srcArray, srcArray+src.length(), FALSE,
170 TRUE, buffer, errorCode);
171 }
172 }
173 return U_SUCCESS(errorCode) && dest!=src;
174 }
175 #endif
176
177 #if UCONFIG_NO_NORMALIZATION
178 static UBool isCanonSegmentStarter(const BinaryProperty &, UChar32, UProperty) {
179 return FALSE;
180 }
181 #else
182 static UBool isCanonSegmentStarter(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
183 UErrorCode errorCode=U_ZERO_ERROR;
184 const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
185 return
186 U_SUCCESS(errorCode) && impl->ensureCanonIterData(errorCode) &&
187 impl->isCanonSegmentStarter(c);
188 }
189 #endif
190
191 static UBool isPOSIX_alnum(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
192 return u_isalnumPOSIX(c);
193 }
194
195 static UBool isPOSIX_blank(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
196 return u_isblank(c);
197 }
198
199 static UBool isPOSIX_graph(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
200 return u_isgraphPOSIX(c);
201 }
202
203 static UBool isPOSIX_print(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
204 return u_isprintPOSIX(c);
205 }
206
207 static UBool isPOSIX_xdigit(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
208 return u_isxdigit(c);
209 }
210
211 static const BinaryProperty binProps[UCHAR_BINARY_LIMIT]={
212 /*
213 * column and mask values for binary properties from u_getUnicodeProperties().
214 * Must be in order of corresponding UProperty,
215 * and there must be exactly one entry per binary UProperty.
216 *
217 * Properties with mask==0 are handled in code.
218 * For them, column is the UPropertySource value.
219 */
220 { 1, U_MASK(UPROPS_ALPHABETIC), defaultContains },
221 { 1, U_MASK(UPROPS_ASCII_HEX_DIGIT), defaultContains },
222 { UPROPS_SRC_BIDI, 0, isBidiControl },
223 { UPROPS_SRC_BIDI, 0, isMirrored },
224 { 1, U_MASK(UPROPS_DASH), defaultContains },
225 { 1, U_MASK(UPROPS_DEFAULT_IGNORABLE_CODE_POINT), defaultContains },
226 { 1, U_MASK(UPROPS_DEPRECATED), defaultContains },
227 { 1, U_MASK(UPROPS_DIACRITIC), defaultContains },
228 { 1, U_MASK(UPROPS_EXTENDER), defaultContains },
229 { UPROPS_SRC_NFC, 0, hasFullCompositionExclusion },
230 { 1, U_MASK(UPROPS_GRAPHEME_BASE), defaultContains },
231 { 1, U_MASK(UPROPS_GRAPHEME_EXTEND), defaultContains },
232 { 1, U_MASK(UPROPS_GRAPHEME_LINK), defaultContains },
233 { 1, U_MASK(UPROPS_HEX_DIGIT), defaultContains },
234 { 1, U_MASK(UPROPS_HYPHEN), defaultContains },
235 { 1, U_MASK(UPROPS_ID_CONTINUE), defaultContains },
236 { 1, U_MASK(UPROPS_ID_START), defaultContains },
237 { 1, U_MASK(UPROPS_IDEOGRAPHIC), defaultContains },
238 { 1, U_MASK(UPROPS_IDS_BINARY_OPERATOR), defaultContains },
239 { 1, U_MASK(UPROPS_IDS_TRINARY_OPERATOR), defaultContains },
240 { UPROPS_SRC_BIDI, 0, isJoinControl },
241 { 1, U_MASK(UPROPS_LOGICAL_ORDER_EXCEPTION), defaultContains },
242 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_LOWERCASE
243 { 1, U_MASK(UPROPS_MATH), defaultContains },
244 { 1, U_MASK(UPROPS_NONCHARACTER_CODE_POINT), defaultContains },
245 { 1, U_MASK(UPROPS_QUOTATION_MARK), defaultContains },
246 { 1, U_MASK(UPROPS_RADICAL), defaultContains },
247 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_SOFT_DOTTED
248 { 1, U_MASK(UPROPS_TERMINAL_PUNCTUATION), defaultContains },
249 { 1, U_MASK(UPROPS_UNIFIED_IDEOGRAPH), defaultContains },
250 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_UPPERCASE
251 { 1, U_MASK(UPROPS_WHITE_SPACE), defaultContains },
252 { 1, U_MASK(UPROPS_XID_CONTINUE), defaultContains },
253 { 1, U_MASK(UPROPS_XID_START), defaultContains },
254 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CASE_SENSITIVE
255 { 1, U_MASK(UPROPS_S_TERM), defaultContains },
256 { 1, U_MASK(UPROPS_VARIATION_SELECTOR), defaultContains },
257 { UPROPS_SRC_NFC, 0, isNormInert }, // UCHAR_NFD_INERT
258 { UPROPS_SRC_NFKC, 0, isNormInert }, // UCHAR_NFKD_INERT
259 { UPROPS_SRC_NFC, 0, isNormInert }, // UCHAR_NFC_INERT
260 { UPROPS_SRC_NFKC, 0, isNormInert }, // UCHAR_NFKC_INERT
261 { UPROPS_SRC_NFC_CANON_ITER, 0, isCanonSegmentStarter },
262 { 1, U_MASK(UPROPS_PATTERN_SYNTAX), defaultContains },
263 { 1, U_MASK(UPROPS_PATTERN_WHITE_SPACE), defaultContains },
264 { UPROPS_SRC_CHAR_AND_PROPSVEC, 0, isPOSIX_alnum },
265 { UPROPS_SRC_CHAR, 0, isPOSIX_blank },
266 { UPROPS_SRC_CHAR, 0, isPOSIX_graph },
267 { UPROPS_SRC_CHAR, 0, isPOSIX_print },
268 { UPROPS_SRC_CHAR, 0, isPOSIX_xdigit },
269 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CASED
270 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CASE_IGNORABLE
271 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CHANGES_WHEN_LOWERCASED
272 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CHANGES_WHEN_UPPERCASED
273 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CHANGES_WHEN_TITLECASED
274 { UPROPS_SRC_CASE_AND_NORM, 0, changesWhenCasefolded },
275 { UPROPS_SRC_CASE, 0, caseBinaryPropertyContains }, // UCHAR_CHANGES_WHEN_CASEMAPPED
276 { UPROPS_SRC_NFKC_CF, 0, changesWhenNFKC_Casefolded }
277 };
278
279 U_CAPI UBool U_EXPORT2
280 u_hasBinaryProperty(UChar32 c, UProperty which) {
281 /* c is range-checked in the functions that are called from here */
282 if(which<UCHAR_BINARY_START || UCHAR_BINARY_LIMIT<=which) {
283 /* not a known binary property */
284 return FALSE;
285 } else {
286 const BinaryProperty &prop=binProps[which];
287 return prop.contains(prop, c, which);
288 }
289 }
290
291 struct IntProperty;
292
293 typedef int32_t IntPropertyGetValue(const IntProperty &prop, UChar32 c, UProperty which);
294 typedef int32_t IntPropertyGetMaxValue(const IntProperty &prop, UProperty which);
295
296 struct IntProperty {
297 int32_t column; // SRC_PROPSVEC column, or "source" if mask==0
298 uint32_t mask;
299 int32_t shift; // =maxValue if getMaxValueFromShift() is used
300 IntPropertyGetValue *getValue;
301 IntPropertyGetMaxValue *getMaxValue;
302 };
303
304 static int32_t defaultGetValue(const IntProperty &prop, UChar32 c, UProperty /*which*/) {
305 /* systematic, directly stored properties */
306 return (int32_t)(u_getUnicodeProperties(c, prop.column)&prop.mask)>>prop.shift;
307 }
308
309 static int32_t defaultGetMaxValue(const IntProperty &prop, UProperty /*which*/) {
310 return (uprv_getMaxValues(prop.column)&prop.mask)>>prop.shift;
311 }
312
313 static int32_t getMaxValueFromShift(const IntProperty &prop, UProperty /*which*/) {
314 return prop.shift;
315 }
316
317 static int32_t getBiDiClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
318 return (int32_t)u_charDirection(c);
319 }
320
321 static int32_t getBiDiPairedBracketType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
322 return (int32_t)ubidi_getPairedBracketType(GET_BIDI_PROPS(), c);
323 }
324
325 static int32_t biDiGetMaxValue(const IntProperty &/*prop*/, UProperty which) {
326 return ubidi_getMaxValue(GET_BIDI_PROPS(), which);
327 }
328
329 #if UCONFIG_NO_NORMALIZATION
330 static int32_t getCombiningClass(const IntProperty &, UChar32, UProperty) {
331 return 0;
332 }
333 #else
334 static int32_t getCombiningClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
335 return u_getCombiningClass(c);
336 }
337 #endif
338
339 static int32_t getGeneralCategory(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
340 return (int32_t)u_charType(c);
341 }
342
343 static int32_t getJoiningGroup(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
344 return ubidi_getJoiningGroup(GET_BIDI_PROPS(), c);
345 }
346
347 static int32_t getJoiningType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
348 return ubidi_getJoiningType(GET_BIDI_PROPS(), c);
349 }
350
351 static int32_t getNumericType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
352 int32_t ntv=(int32_t)GET_NUMERIC_TYPE_VALUE(u_getMainProperties(c));
353 return UPROPS_NTV_GET_TYPE(ntv);
354 }
355
356 static int32_t getScript(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
357 UErrorCode errorCode=U_ZERO_ERROR;
358 return (int32_t)uscript_getScript(c, &errorCode);
359 }
360
361 /*
362 * Map some of the Grapheme Cluster Break values to Hangul Syllable Types.
363 * Hangul_Syllable_Type is fully redundant with a subset of Grapheme_Cluster_Break.
364 */
365 static const UHangulSyllableType gcbToHst[]={
366 U_HST_NOT_APPLICABLE, /* U_GCB_OTHER */
367 U_HST_NOT_APPLICABLE, /* U_GCB_CONTROL */
368 U_HST_NOT_APPLICABLE, /* U_GCB_CR */
369 U_HST_NOT_APPLICABLE, /* U_GCB_EXTEND */
370 U_HST_LEADING_JAMO, /* U_GCB_L */
371 U_HST_NOT_APPLICABLE, /* U_GCB_LF */
372 U_HST_LV_SYLLABLE, /* U_GCB_LV */
373 U_HST_LVT_SYLLABLE, /* U_GCB_LVT */
374 U_HST_TRAILING_JAMO, /* U_GCB_T */
375 U_HST_VOWEL_JAMO /* U_GCB_V */
376 /*
377 * Omit GCB values beyond what we need for hst.
378 * The code below checks for the array length.
379 */
380 };
381
382 static int32_t getHangulSyllableType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
383 /* see comments on gcbToHst[] above */
384 int32_t gcb=(int32_t)(u_getUnicodeProperties(c, 2)&UPROPS_GCB_MASK)>>UPROPS_GCB_SHIFT;
385 if(gcb<LENGTHOF(gcbToHst)) {
386 return gcbToHst[gcb];
387 } else {
388 return U_HST_NOT_APPLICABLE;
389 }
390 }
391
392 #if UCONFIG_NO_NORMALIZATION
393 static int32_t getNormQuickCheck(const IntProperty &, UChar32, UProperty) {
394 return 0;
395 }
396 #else
397 static int32_t getNormQuickCheck(const IntProperty &/*prop*/, UChar32 c, UProperty which) {
398 return (int32_t)unorm_getQuickCheck(c, (UNormalizationMode)(which-UCHAR_NFD_QUICK_CHECK+UNORM_NFD));
399 }
400 #endif
401
402 #if UCONFIG_NO_NORMALIZATION
403 static int32_t getLeadCombiningClass(const IntProperty &, UChar32, UProperty) {
404 return 0;
405 }
406 #else
407 static int32_t getLeadCombiningClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
408 return unorm_getFCD16(c)>>8;
409 }
410 #endif
411
412 #if UCONFIG_NO_NORMALIZATION
413 static int32_t getTrailCombiningClass(const IntProperty &, UChar32, UProperty) {
414 return 0;
415 }
416 #else
417 static int32_t getTrailCombiningClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
418 return unorm_getFCD16(c)&0xff;
419 }
420 #endif
421
422 static const IntProperty intProps[UCHAR_INT_LIMIT-UCHAR_INT_START]={
423 /*
424 * column, mask and shift values for int-value properties from u_getUnicodeProperties().
425 * Must be in order of corresponding UProperty,
426 * and there must be exactly one entry per int UProperty.
427 *
428 * Properties with mask==0 are handled in code.
429 * For them, column is the UPropertySource value.
430 */
431 { UPROPS_SRC_BIDI, 0, 0, getBiDiClass, biDiGetMaxValue },
432 { 0, UPROPS_BLOCK_MASK, UPROPS_BLOCK_SHIFT, defaultGetValue, defaultGetMaxValue },
433 { UPROPS_SRC_NFC, 0, 0xff, getCombiningClass, getMaxValueFromShift },
434 { 2, UPROPS_DT_MASK, 0, defaultGetValue, defaultGetMaxValue },
435 { 0, UPROPS_EA_MASK, UPROPS_EA_SHIFT, defaultGetValue, defaultGetMaxValue },
436 { UPROPS_SRC_CHAR, 0, (int32_t)U_CHAR_CATEGORY_COUNT-1,getGeneralCategory, getMaxValueFromShift },
437 { UPROPS_SRC_BIDI, 0, 0, getJoiningGroup, biDiGetMaxValue },
438 { UPROPS_SRC_BIDI, 0, 0, getJoiningType, biDiGetMaxValue },
439 { 2, UPROPS_LB_MASK, UPROPS_LB_SHIFT, defaultGetValue, defaultGetMaxValue },
440 { UPROPS_SRC_CHAR, 0, (int32_t)U_NT_COUNT-1, getNumericType, getMaxValueFromShift },
441 { 0, UPROPS_SCRIPT_MASK, 0, getScript, defaultGetMaxValue },
442 { UPROPS_SRC_PROPSVEC, 0, (int32_t)U_HST_COUNT-1, getHangulSyllableType, getMaxValueFromShift },
443 // UCHAR_NFD_QUICK_CHECK: max=1=YES -- never "maybe", only "no" or "yes"
444 { UPROPS_SRC_NFC, 0, (int32_t)UNORM_YES, getNormQuickCheck, getMaxValueFromShift },
445 // UCHAR_NFKD_QUICK_CHECK: max=1=YES -- never "maybe", only "no" or "yes"
446 { UPROPS_SRC_NFKC, 0, (int32_t)UNORM_YES, getNormQuickCheck, getMaxValueFromShift },
447 // UCHAR_NFC_QUICK_CHECK: max=2=MAYBE
448 { UPROPS_SRC_NFC, 0, (int32_t)UNORM_MAYBE, getNormQuickCheck, getMaxValueFromShift },
449 // UCHAR_NFKC_QUICK_CHECK: max=2=MAYBE
450 { UPROPS_SRC_NFKC, 0, (int32_t)UNORM_MAYBE, getNormQuickCheck, getMaxValueFromShift },
451 { UPROPS_SRC_NFC, 0, 0xff, getLeadCombiningClass, getMaxValueFromShift },
452 { UPROPS_SRC_NFC, 0, 0xff, getTrailCombiningClass, getMaxValueFromShift },
453 { 2, UPROPS_GCB_MASK, UPROPS_GCB_SHIFT, defaultGetValue, defaultGetMaxValue },
454 { 2, UPROPS_SB_MASK, UPROPS_SB_SHIFT, defaultGetValue, defaultGetMaxValue },
455 { 2, UPROPS_WB_MASK, UPROPS_WB_SHIFT, defaultGetValue, defaultGetMaxValue },
456 { UPROPS_SRC_BIDI, 0, 0, getBiDiPairedBracketType, biDiGetMaxValue },
457 };
458
459 U_CAPI int32_t U_EXPORT2
460 u_getIntPropertyValue(UChar32 c, UProperty which) {
461 if(which<UCHAR_INT_START) {
462 if(UCHAR_BINARY_START<=which && which<UCHAR_BINARY_LIMIT) {
463 const BinaryProperty &prop=binProps[which];
464 return prop.contains(prop, c, which);
465 }
466 } else if(which<UCHAR_INT_LIMIT) {
467 const IntProperty &prop=intProps[which-UCHAR_INT_START];
468 return prop.getValue(prop, c, which);
469 } else if(which==UCHAR_GENERAL_CATEGORY_MASK) {
470 return U_MASK(u_charType(c));
471 }
472 return 0; // undefined
473 }
474
475 U_CAPI int32_t U_EXPORT2
476 u_getIntPropertyMinValue(UProperty /*which*/) {
477 return 0; /* all binary/enum/int properties have a minimum value of 0 */
478 }
479
480 U_CAPI int32_t U_EXPORT2
481 u_getIntPropertyMaxValue(UProperty which) {
482 if(which<UCHAR_INT_START) {
483 if(UCHAR_BINARY_START<=which && which<UCHAR_BINARY_LIMIT) {
484 return 1; // maximum TRUE for all binary properties
485 }
486 } else if(which<UCHAR_INT_LIMIT) {
487 const IntProperty &prop=intProps[which-UCHAR_INT_START];
488 return prop.getMaxValue(prop, which);
489 }
490 return -1; // undefined
491 }
492
493 U_CFUNC UPropertySource U_EXPORT2
494 uprops_getSource(UProperty which) {
495 if(which<UCHAR_BINARY_START) {
496 return UPROPS_SRC_NONE; /* undefined */
497 } else if(which<UCHAR_BINARY_LIMIT) {
498 const BinaryProperty &prop=binProps[which];
499 if(prop.mask!=0) {
500 return UPROPS_SRC_PROPSVEC;
501 } else {
502 return (UPropertySource)prop.column;
503 }
504 } else if(which<UCHAR_INT_START) {
505 return UPROPS_SRC_NONE; /* undefined */
506 } else if(which<UCHAR_INT_LIMIT) {
507 const IntProperty &prop=intProps[which-UCHAR_INT_START];
508 if(prop.mask!=0) {
509 return UPROPS_SRC_PROPSVEC;
510 } else {
511 return (UPropertySource)prop.column;
512 }
513 } else if(which<UCHAR_STRING_START) {
514 switch(which) {
515 case UCHAR_GENERAL_CATEGORY_MASK:
516 case UCHAR_NUMERIC_VALUE:
517 return UPROPS_SRC_CHAR;
518
519 default:
520 return UPROPS_SRC_NONE;
521 }
522 } else if(which<UCHAR_STRING_LIMIT) {
523 switch(which) {
524 case UCHAR_AGE:
525 return UPROPS_SRC_PROPSVEC;
526
527 case UCHAR_BIDI_MIRRORING_GLYPH:
528 return UPROPS_SRC_BIDI;
529
530 case UCHAR_CASE_FOLDING:
531 case UCHAR_LOWERCASE_MAPPING:
532 case UCHAR_SIMPLE_CASE_FOLDING:
533 case UCHAR_SIMPLE_LOWERCASE_MAPPING:
534 case UCHAR_SIMPLE_TITLECASE_MAPPING:
535 case UCHAR_SIMPLE_UPPERCASE_MAPPING:
536 case UCHAR_TITLECASE_MAPPING:
537 case UCHAR_UPPERCASE_MAPPING:
538 return UPROPS_SRC_CASE;
539
540 case UCHAR_ISO_COMMENT:
541 case UCHAR_NAME:
542 case UCHAR_UNICODE_1_NAME:
543 return UPROPS_SRC_NAMES;
544
545 default:
546 return UPROPS_SRC_NONE;
547 }
548 } else {
549 switch(which) {
550 case UCHAR_SCRIPT_EXTENSIONS:
551 return UPROPS_SRC_PROPSVEC;
552 default:
553 return UPROPS_SRC_NONE; /* undefined */
554 }
555 }
556 }
557
558 #if !UCONFIG_NO_NORMALIZATION
559
560 U_CAPI int32_t U_EXPORT2
561 u_getFC_NFKC_Closure(UChar32 c, UChar *dest, int32_t destCapacity, UErrorCode *pErrorCode) {
562 if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
563 return 0;
564 }
565 if(destCapacity<0 || (dest==NULL && destCapacity>0)) {
566 *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
567 return 0;
568 }
569 // Compute the FC_NFKC_Closure on the fly:
570 // We have the API for complete coverage of Unicode properties, although
571 // this value by itself is not useful via API.
572 // (What could be useful is a custom normalization table that combines
573 // case folding and NFKC.)
574 // For the derivation, see Unicode's DerivedNormalizationProps.txt.
575 const Normalizer2 *nfkc=Normalizer2Factory::getNFKCInstance(*pErrorCode);
576 const UCaseProps *csp=ucase_getSingleton();
577 if(U_FAILURE(*pErrorCode)) {
578 return 0;
579 }
580 // first: b = NFKC(Fold(a))
581 UnicodeString folded1String;
582 const UChar *folded1;
583 int32_t folded1Length=ucase_toFullFolding(csp, c, &folded1, U_FOLD_CASE_DEFAULT);
584 if(folded1Length<0) {
585 const Normalizer2Impl *nfkcImpl=Normalizer2Factory::getImpl(nfkc);
586 if(nfkcImpl->getCompQuickCheck(nfkcImpl->getNorm16(c))!=UNORM_NO) {
587 return u_terminateUChars(dest, destCapacity, 0, pErrorCode); // c does not change at all under CaseFolding+NFKC
588 }
589 folded1String.setTo(c);
590 } else {
591 if(folded1Length>UCASE_MAX_STRING_LENGTH) {
592 folded1String.setTo(folded1Length);
593 } else {
594 folded1String.setTo(FALSE, folded1, folded1Length);
595 }
596 }
597 UnicodeString kc1=nfkc->normalize(folded1String, *pErrorCode);
598 // second: c = NFKC(Fold(b))
599 UnicodeString folded2String(kc1);
600 UnicodeString kc2=nfkc->normalize(folded2String.foldCase(), *pErrorCode);
601 // if (c != b) add the mapping from a to c
602 if(U_FAILURE(*pErrorCode) || kc1==kc2) {
603 return u_terminateUChars(dest, destCapacity, 0, pErrorCode);
604 } else {
605 return kc2.extract(dest, destCapacity, *pErrorCode);
606 }
607 }
608
609 #endif

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