1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 ********************************************************************************
5 * Copyright (C) 1996-2016, International Business Machines
6 * Corporation and others. All Rights Reserved.
7 ********************************************************************************
8 *
9 * File UCHAR.C
10 *
11 * Modification History:
12 *
13 * Date Name Description
14 * 04/02/97 aliu Creation.
15 * 4/15/99 Madhu Updated all the function definitions for C Implementation
16 * 5/20/99 Madhu Added the function u_getVersion()
17 * 8/19/1999 srl Upgraded scripts to Unicode3.0
18 * 11/11/1999 weiv added u_isalnum(), cleaned comments
19 * 01/11/2000 helena Renamed u_getVersion to u_getUnicodeVersion.
20 * 06/20/2000 helena OS/400 port changes; mostly typecast.
21 ******************************************************************************
22 */
23
24 #include "unicode/utypes.h"
25 #include "unicode/uchar.h"
26 #include "unicode/uscript.h"
27 #include "unicode/udata.h"
28 #include "uassert.h"
29 #include "cmemory.h"
30 #include "ucln_cmn.h"
31 #include "utrie2.h"
32 #include "udataswp.h"
33 #include "uprops.h"
34 #include "ustr_imp.h"
35
36 /* uchar_props_data.h is machine-generated by genprops --csource */
37 #define INCLUDED_FROM_UCHAR_C
38 #include "uchar_props_data.h"
39
40 /* constants and macros for access to the data ------------------------------ */
41
42 /* getting a uint32_t properties word from the data */
43 #define GET_PROPS(c, result) ((result)=UTRIE2_GET16(&propsTrie, c));
44
45 /* API functions ------------------------------------------------------------ */
46
47 /* Gets the Unicode character's general category.*/
48 U_CAPI int8_t U_EXPORT2
u_charType(UChar32 c)49 u_charType(UChar32 c) {
50 uint32_t props;
51 GET_PROPS(c, props);
52 return (int8_t)GET_CATEGORY(props);
53 }
54
55 /* Enumerate all code points with their general categories. */
56 struct _EnumTypeCallback {
57 UCharEnumTypeRange *enumRange;
58 const void *context;
59 };
60
61 static uint32_t U_CALLCONV
_enumTypeValue(const void * context,uint32_t value)62 _enumTypeValue(const void *context, uint32_t value) {
63 (void)context;
64 return GET_CATEGORY(value);
65 }
66
67 static UBool U_CALLCONV
_enumTypeRange(const void * context,UChar32 start,UChar32 end,uint32_t value)68 _enumTypeRange(const void *context, UChar32 start, UChar32 end, uint32_t value) {
69 /* just cast the value to UCharCategory */
70 return ((struct _EnumTypeCallback *)context)->
71 enumRange(((struct _EnumTypeCallback *)context)->context,
72 start, end+1, (UCharCategory)value);
73 }
74
75 U_CAPI void U_EXPORT2
u_enumCharTypes(UCharEnumTypeRange * enumRange,const void * context)76 u_enumCharTypes(UCharEnumTypeRange *enumRange, const void *context) {
77 struct _EnumTypeCallback callback;
78
79 if(enumRange==NULL) {
80 return;
81 }
82
83 callback.enumRange=enumRange;
84 callback.context=context;
85 utrie2_enum(&propsTrie, _enumTypeValue, _enumTypeRange, &callback);
86 }
87
88 /* Checks if ch is a lower case letter.*/
89 U_CAPI UBool U_EXPORT2
u_islower(UChar32 c)90 u_islower(UChar32 c) {
91 uint32_t props;
92 GET_PROPS(c, props);
93 return (UBool)(GET_CATEGORY(props)==U_LOWERCASE_LETTER);
94 }
95
96 /* Checks if ch is an upper case letter.*/
97 U_CAPI UBool U_EXPORT2
u_isupper(UChar32 c)98 u_isupper(UChar32 c) {
99 uint32_t props;
100 GET_PROPS(c, props);
101 return (UBool)(GET_CATEGORY(props)==U_UPPERCASE_LETTER);
102 }
103
104 /* Checks if ch is a title case letter; usually upper case letters.*/
105 U_CAPI UBool U_EXPORT2
u_istitle(UChar32 c)106 u_istitle(UChar32 c) {
107 uint32_t props;
108 GET_PROPS(c, props);
109 return (UBool)(GET_CATEGORY(props)==U_TITLECASE_LETTER);
110 }
111
112 /* Checks if ch is a decimal digit. */
113 U_CAPI UBool U_EXPORT2
u_isdigit(UChar32 c)114 u_isdigit(UChar32 c) {
115 uint32_t props;
116 GET_PROPS(c, props);
117 return (UBool)(GET_CATEGORY(props)==U_DECIMAL_DIGIT_NUMBER);
118 }
119
120 U_CAPI UBool U_EXPORT2
u_isxdigit(UChar32 c)121 u_isxdigit(UChar32 c) {
122 uint32_t props;
123
124 /* check ASCII and Fullwidth ASCII a-fA-F */
125 if(
126 (c<=0x66 && c>=0x41 && (c<=0x46 || c>=0x61)) ||
127 (c>=0xff21 && c<=0xff46 && (c<=0xff26 || c>=0xff41))
128 ) {
129 return TRUE;
130 }
131
132 GET_PROPS(c, props);
133 return (UBool)(GET_CATEGORY(props)==U_DECIMAL_DIGIT_NUMBER);
134 }
135
136 /* Checks if the Unicode character is a letter.*/
137 U_CAPI UBool U_EXPORT2
u_isalpha(UChar32 c)138 u_isalpha(UChar32 c) {
139 uint32_t props;
140 GET_PROPS(c, props);
141 return (UBool)((CAT_MASK(props)&U_GC_L_MASK)!=0);
142 }
143
144 U_CAPI UBool U_EXPORT2
u_isUAlphabetic(UChar32 c)145 u_isUAlphabetic(UChar32 c) {
146 return (u_getUnicodeProperties(c, 1)&U_MASK(UPROPS_ALPHABETIC))!=0;
147 }
148
149 /* Checks if c is a letter or a decimal digit */
150 U_CAPI UBool U_EXPORT2
u_isalnum(UChar32 c)151 u_isalnum(UChar32 c) {
152 uint32_t props;
153 GET_PROPS(c, props);
154 return (UBool)((CAT_MASK(props)&(U_GC_L_MASK|U_GC_ND_MASK))!=0);
155 }
156
157 /**
158 * Checks if c is alphabetic, or a decimal digit; implements UCHAR_POSIX_ALNUM.
159 * @internal
160 */
161 U_CFUNC UBool
u_isalnumPOSIX(UChar32 c)162 u_isalnumPOSIX(UChar32 c) {
163 return (UBool)(u_isUAlphabetic(c) || u_isdigit(c));
164 }
165
166 /* Checks if ch is a unicode character with assigned character type.*/
167 U_CAPI UBool U_EXPORT2
u_isdefined(UChar32 c)168 u_isdefined(UChar32 c) {
169 uint32_t props;
170 GET_PROPS(c, props);
171 return (UBool)(GET_CATEGORY(props)!=0);
172 }
173
174 /* Checks if the Unicode character is a base form character that can take a diacritic.*/
175 U_CAPI UBool U_EXPORT2
u_isbase(UChar32 c)176 u_isbase(UChar32 c) {
177 uint32_t props;
178 GET_PROPS(c, props);
179 return (UBool)((CAT_MASK(props)&(U_GC_L_MASK|U_GC_N_MASK|U_GC_MC_MASK|U_GC_ME_MASK))!=0);
180 }
181
182 /* Checks if the Unicode character is a control character.*/
183 U_CAPI UBool U_EXPORT2
u_iscntrl(UChar32 c)184 u_iscntrl(UChar32 c) {
185 uint32_t props;
186 GET_PROPS(c, props);
187 return (UBool)((CAT_MASK(props)&(U_GC_CC_MASK|U_GC_CF_MASK|U_GC_ZL_MASK|U_GC_ZP_MASK))!=0);
188 }
189
190 U_CAPI UBool U_EXPORT2
u_isISOControl(UChar32 c)191 u_isISOControl(UChar32 c) {
192 return (uint32_t)c<=0x9f && (c<=0x1f || c>=0x7f);
193 }
194
195 /* Some control characters that are used as space. */
196 #define IS_THAT_CONTROL_SPACE(c) \
197 (c<=0x9f && ((c>=TAB && c<=CR) || (c>=0x1c && c <=0x1f) || c==NL))
198
199 /* Java has decided that U+0085 New Line is not whitespace any more. */
200 #define IS_THAT_ASCII_CONTROL_SPACE(c) \
201 (c<=0x1f && c>=TAB && (c<=CR || c>=0x1c))
202
203 /* Checks if the Unicode character is a space character.*/
204 U_CAPI UBool U_EXPORT2
u_isspace(UChar32 c)205 u_isspace(UChar32 c) {
206 uint32_t props;
207 GET_PROPS(c, props);
208 return (UBool)((CAT_MASK(props)&U_GC_Z_MASK)!=0 || IS_THAT_CONTROL_SPACE(c));
209 }
210
211 U_CAPI UBool U_EXPORT2
u_isJavaSpaceChar(UChar32 c)212 u_isJavaSpaceChar(UChar32 c) {
213 uint32_t props;
214 GET_PROPS(c, props);
215 return (UBool)((CAT_MASK(props)&U_GC_Z_MASK)!=0);
216 }
217
218 /* Checks if the Unicode character is a whitespace character.*/
219 U_CAPI UBool U_EXPORT2
u_isWhitespace(UChar32 c)220 u_isWhitespace(UChar32 c) {
221 uint32_t props;
222 GET_PROPS(c, props);
223 return (UBool)(
224 ((CAT_MASK(props)&U_GC_Z_MASK)!=0 &&
225 c!=NBSP && c!=FIGURESP && c!=NNBSP) || /* exclude no-break spaces */
226 IS_THAT_ASCII_CONTROL_SPACE(c)
227 );
228 }
229
230 U_CAPI UBool U_EXPORT2
u_isblank(UChar32 c)231 u_isblank(UChar32 c) {
232 if((uint32_t)c<=0x9f) {
233 return c==9 || c==0x20; /* TAB or SPACE */
234 } else {
235 /* Zs */
236 uint32_t props;
237 GET_PROPS(c, props);
238 return (UBool)(GET_CATEGORY(props)==U_SPACE_SEPARATOR);
239 }
240 }
241
242 U_CAPI UBool U_EXPORT2
u_isUWhiteSpace(UChar32 c)243 u_isUWhiteSpace(UChar32 c) {
244 return (u_getUnicodeProperties(c, 1)&U_MASK(UPROPS_WHITE_SPACE))!=0;
245 }
246
247 /* Checks if the Unicode character is printable.*/
248 U_CAPI UBool U_EXPORT2
u_isprint(UChar32 c)249 u_isprint(UChar32 c) {
250 uint32_t props;
251 GET_PROPS(c, props);
252 /* comparing ==0 returns FALSE for the categories mentioned */
253 return (UBool)((CAT_MASK(props)&U_GC_C_MASK)==0);
254 }
255
256 /**
257 * Checks if c is in \p{graph}\p{blank} - \p{cntrl}.
258 * Implements UCHAR_POSIX_PRINT.
259 * @internal
260 */
261 U_CFUNC UBool
u_isprintPOSIX(UChar32 c)262 u_isprintPOSIX(UChar32 c) {
263 uint32_t props;
264 GET_PROPS(c, props);
265 /*
266 * The only cntrl character in graph+blank is TAB (in blank).
267 * Here we implement (blank-TAB)=Zs instead of calling u_isblank().
268 */
269 return (UBool)((GET_CATEGORY(props)==U_SPACE_SEPARATOR) || u_isgraphPOSIX(c));
270 }
271
272 U_CAPI UBool U_EXPORT2
u_isgraph(UChar32 c)273 u_isgraph(UChar32 c) {
274 uint32_t props;
275 GET_PROPS(c, props);
276 /* comparing ==0 returns FALSE for the categories mentioned */
277 return (UBool)((CAT_MASK(props)&
278 (U_GC_CC_MASK|U_GC_CF_MASK|U_GC_CS_MASK|U_GC_CN_MASK|U_GC_Z_MASK))
279 ==0);
280 }
281
282 /**
283 * Checks if c is in
284 * [^\p{space}\p{gc=Control}\p{gc=Surrogate}\p{gc=Unassigned}]
285 * with space=\p{Whitespace} and Control=Cc.
286 * Implements UCHAR_POSIX_GRAPH.
287 * @internal
288 */
289 U_CFUNC UBool
u_isgraphPOSIX(UChar32 c)290 u_isgraphPOSIX(UChar32 c) {
291 uint32_t props;
292 GET_PROPS(c, props);
293 /* \p{space}\p{gc=Control} == \p{gc=Z}\p{Control} */
294 /* comparing ==0 returns FALSE for the categories mentioned */
295 return (UBool)((CAT_MASK(props)&
296 (U_GC_CC_MASK|U_GC_CS_MASK|U_GC_CN_MASK|U_GC_Z_MASK))
297 ==0);
298 }
299
300 U_CAPI UBool U_EXPORT2
u_ispunct(UChar32 c)301 u_ispunct(UChar32 c) {
302 uint32_t props;
303 GET_PROPS(c, props);
304 return (UBool)((CAT_MASK(props)&U_GC_P_MASK)!=0);
305 }
306
307 /* Checks if the Unicode character can start a Unicode identifier.*/
308 U_CAPI UBool U_EXPORT2
u_isIDStart(UChar32 c)309 u_isIDStart(UChar32 c) {
310 /* same as u_isalpha() */
311 uint32_t props;
312 GET_PROPS(c, props);
313 return (UBool)((CAT_MASK(props)&(U_GC_L_MASK|U_GC_NL_MASK))!=0);
314 }
315
316 /* Checks if the Unicode character can be a Unicode identifier part other than starting the
317 identifier.*/
318 U_CAPI UBool U_EXPORT2
u_isIDPart(UChar32 c)319 u_isIDPart(UChar32 c) {
320 uint32_t props;
321 GET_PROPS(c, props);
322 return (UBool)(
323 (CAT_MASK(props)&
324 (U_GC_ND_MASK|U_GC_NL_MASK|
325 U_GC_L_MASK|
326 U_GC_PC_MASK|U_GC_MC_MASK|U_GC_MN_MASK)
327 )!=0 ||
328 u_isIDIgnorable(c));
329 }
330
331 /*Checks if the Unicode character can be ignorable in a Java or Unicode identifier.*/
332 U_CAPI UBool U_EXPORT2
u_isIDIgnorable(UChar32 c)333 u_isIDIgnorable(UChar32 c) {
334 if(c<=0x9f) {
335 return u_isISOControl(c) && !IS_THAT_ASCII_CONTROL_SPACE(c);
336 } else {
337 uint32_t props;
338 GET_PROPS(c, props);
339 return (UBool)(GET_CATEGORY(props)==U_FORMAT_CHAR);
340 }
341 }
342
343 /*Checks if the Unicode character can start a Java identifier.*/
344 U_CAPI UBool U_EXPORT2
u_isJavaIDStart(UChar32 c)345 u_isJavaIDStart(UChar32 c) {
346 uint32_t props;
347 GET_PROPS(c, props);
348 return (UBool)((CAT_MASK(props)&(U_GC_L_MASK|U_GC_SC_MASK|U_GC_PC_MASK))!=0);
349 }
350
351 /*Checks if the Unicode character can be a Java identifier part other than starting the
352 * identifier.
353 */
354 U_CAPI UBool U_EXPORT2
u_isJavaIDPart(UChar32 c)355 u_isJavaIDPart(UChar32 c) {
356 uint32_t props;
357 GET_PROPS(c, props);
358 return (UBool)(
359 (CAT_MASK(props)&
360 (U_GC_ND_MASK|U_GC_NL_MASK|
361 U_GC_L_MASK|
362 U_GC_SC_MASK|U_GC_PC_MASK|
363 U_GC_MC_MASK|U_GC_MN_MASK)
364 )!=0 ||
365 u_isIDIgnorable(c));
366 }
367
368 U_CAPI int32_t U_EXPORT2
u_charDigitValue(UChar32 c)369 u_charDigitValue(UChar32 c) {
370 uint32_t props;
371 int32_t value;
372 GET_PROPS(c, props);
373 value=(int32_t)GET_NUMERIC_TYPE_VALUE(props)-UPROPS_NTV_DECIMAL_START;
374 if(value<=9) {
375 return value;
376 } else {
377 return -1;
378 }
379 }
380
381 U_CAPI double U_EXPORT2
u_getNumericValue(UChar32 c)382 u_getNumericValue(UChar32 c) {
383 uint32_t props;
384 int32_t ntv;
385 GET_PROPS(c, props);
386 ntv=(int32_t)GET_NUMERIC_TYPE_VALUE(props);
387
388 if(ntv==UPROPS_NTV_NONE) {
389 return U_NO_NUMERIC_VALUE;
390 } else if(ntv<UPROPS_NTV_DIGIT_START) {
391 /* decimal digit */
392 return ntv-UPROPS_NTV_DECIMAL_START;
393 } else if(ntv<UPROPS_NTV_NUMERIC_START) {
394 /* other digit */
395 return ntv-UPROPS_NTV_DIGIT_START;
396 } else if(ntv<UPROPS_NTV_FRACTION_START) {
397 /* small integer */
398 return ntv-UPROPS_NTV_NUMERIC_START;
399 } else if(ntv<UPROPS_NTV_LARGE_START) {
400 /* fraction */
401 int32_t numerator=(ntv>>4)-12;
402 int32_t denominator=(ntv&0xf)+1;
403 return (double)numerator/denominator;
404 } else if(ntv<UPROPS_NTV_BASE60_START) {
405 /* large, single-significant-digit integer */
406 double numValue;
407 int32_t mant=(ntv>>5)-14;
408 int32_t exp=(ntv&0x1f)+2;
409 numValue=mant;
410
411 /* multiply by 10^exp without math.h */
412 while(exp>=4) {
413 numValue*=10000.;
414 exp-=4;
415 }
416 switch(exp) {
417 case 3:
418 numValue*=1000.;
419 break;
420 case 2:
421 numValue*=100.;
422 break;
423 case 1:
424 numValue*=10.;
425 break;
426 case 0:
427 default:
428 break;
429 }
430
431 return numValue;
432 } else if(ntv<UPROPS_NTV_FRACTION20_START) {
433 /* sexagesimal (base 60) integer */
434 int32_t numValue=(ntv>>2)-0xbf;
435 int32_t exp=(ntv&3)+1;
436
437 switch(exp) {
438 case 4:
439 numValue*=60*60*60*60;
440 break;
441 case 3:
442 numValue*=60*60*60;
443 break;
444 case 2:
445 numValue*=60*60;
446 break;
447 case 1:
448 numValue*=60;
449 break;
450 case 0:
451 default:
452 break;
453 }
454
455 return numValue;
456 } else if(ntv<UPROPS_NTV_RESERVED_START) {
457 // fraction-20 e.g. 3/80
458 int32_t frac20=ntv-UPROPS_NTV_FRACTION20_START; // 0..0x17
459 int32_t numerator=2*(frac20&3)+1;
460 int32_t denominator=20<<(frac20>>2);
461 return (double)numerator/denominator;
462 } else {
463 /* reserved */
464 return U_NO_NUMERIC_VALUE;
465 }
466 }
467
468 U_CAPI int32_t U_EXPORT2
u_digit(UChar32 ch,int8_t radix)469 u_digit(UChar32 ch, int8_t radix) {
470 int8_t value;
471 if((uint8_t)(radix-2)<=(36-2)) {
472 value=(int8_t)u_charDigitValue(ch);
473 if(value<0) {
474 /* ch is not a decimal digit, try latin letters */
475 if(ch>=0x61 && ch<=0x7A) {
476 value=(int8_t)(ch-0x57); /* ch - 'a' + 10 */
477 } else if(ch>=0x41 && ch<=0x5A) {
478 value=(int8_t)(ch-0x37); /* ch - 'A' + 10 */
479 } else if(ch>=0xFF41 && ch<=0xFF5A) {
480 value=(int8_t)(ch-0xFF37); /* fullwidth ASCII a-z */
481 } else if(ch>=0xFF21 && ch<=0xFF3A) {
482 value=(int8_t)(ch-0xFF17); /* fullwidth ASCII A-Z */
483 }
484 }
485 } else {
486 value=-1; /* invalid radix */
487 }
488 return (int8_t)((value<radix) ? value : -1);
489 }
490
491 U_CAPI UChar32 U_EXPORT2
u_forDigit(int32_t digit,int8_t radix)492 u_forDigit(int32_t digit, int8_t radix) {
493 if((uint8_t)(radix-2)>(36-2) || (uint32_t)digit>=(uint32_t)radix) {
494 return 0;
495 } else if(digit<10) {
496 return (UChar32)(0x30+digit);
497 } else {
498 return (UChar32)((0x61-10)+digit);
499 }
500 }
501
502 /* miscellaneous, and support for uprops.cpp -------------------------------- */
503
504 U_CAPI void U_EXPORT2
u_getUnicodeVersion(UVersionInfo versionArray)505 u_getUnicodeVersion(UVersionInfo versionArray) {
506 if(versionArray!=NULL) {
507 uprv_memcpy(versionArray, dataVersion, U_MAX_VERSION_LENGTH);
508 }
509 }
510
511 U_CFUNC uint32_t
u_getMainProperties(UChar32 c)512 u_getMainProperties(UChar32 c) {
513 uint32_t props;
514 GET_PROPS(c, props);
515 return props;
516 }
517
518 U_CFUNC uint32_t
u_getUnicodeProperties(UChar32 c,int32_t column)519 u_getUnicodeProperties(UChar32 c, int32_t column) {
520 U_ASSERT(column>=0);
521 if(column>=propsVectorsColumns) {
522 return 0;
523 } else {
524 uint16_t vecIndex=UTRIE2_GET16(&propsVectorsTrie, c);
525 return propsVectors[vecIndex+column];
526 }
527 }
528
529 U_CFUNC int32_t
uprv_getMaxValues(int32_t column)530 uprv_getMaxValues(int32_t column) {
531 switch(column) {
532 case 0:
533 return indexes[UPROPS_MAX_VALUES_INDEX];
534 case 2:
535 return indexes[UPROPS_MAX_VALUES_2_INDEX];
536 default:
537 return 0;
538 }
539 }
540
541 U_CAPI void U_EXPORT2
u_charAge(UChar32 c,UVersionInfo versionArray)542 u_charAge(UChar32 c, UVersionInfo versionArray) {
543 if(versionArray!=NULL) {
544 uint32_t version=u_getUnicodeProperties(c, 0)>>UPROPS_AGE_SHIFT;
545 versionArray[0]=(uint8_t)(version>>4);
546 versionArray[1]=(uint8_t)(version&0xf);
547 versionArray[2]=versionArray[3]=0;
548 }
549 }
550
551 U_CAPI UScriptCode U_EXPORT2
uscript_getScript(UChar32 c,UErrorCode * pErrorCode)552 uscript_getScript(UChar32 c, UErrorCode *pErrorCode) {
553 uint32_t scriptX;
554 if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
555 return USCRIPT_INVALID_CODE;
556 }
557 if((uint32_t)c>0x10ffff) {
558 *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
559 return USCRIPT_INVALID_CODE;
560 }
561 scriptX=u_getUnicodeProperties(c, 0)&UPROPS_SCRIPT_X_MASK;
562 if(scriptX<UPROPS_SCRIPT_X_WITH_COMMON) {
563 return (UScriptCode)scriptX;
564 } else if(scriptX<UPROPS_SCRIPT_X_WITH_INHERITED) {
565 return USCRIPT_COMMON;
566 } else if(scriptX<UPROPS_SCRIPT_X_WITH_OTHER) {
567 return USCRIPT_INHERITED;
568 } else {
569 return (UScriptCode)scriptExtensions[scriptX&UPROPS_SCRIPT_MASK];
570 }
571 }
572
573 U_CAPI UBool U_EXPORT2
uscript_hasScript(UChar32 c,UScriptCode sc)574 uscript_hasScript(UChar32 c, UScriptCode sc) {
575 const uint16_t *scx;
576 uint32_t scriptX=u_getUnicodeProperties(c, 0)&UPROPS_SCRIPT_X_MASK;
577 if(scriptX<UPROPS_SCRIPT_X_WITH_COMMON) {
578 return sc==(UScriptCode)scriptX;
579 }
580
581 scx=scriptExtensions+(scriptX&UPROPS_SCRIPT_MASK);
582 if(scriptX>=UPROPS_SCRIPT_X_WITH_OTHER) {
583 scx=scriptExtensions+scx[1];
584 }
585 if(sc>=USCRIPT_CODE_LIMIT) {
586 /* Guard against bogus input that would make us go past the Script_Extensions terminator. */
587 return FALSE;
588 }
589 while(sc>*scx) {
590 ++scx;
591 }
592 return sc==(*scx&0x7fff);
593 }
594
595 U_CAPI int32_t U_EXPORT2
uscript_getScriptExtensions(UChar32 c,UScriptCode * scripts,int32_t capacity,UErrorCode * pErrorCode)596 uscript_getScriptExtensions(UChar32 c,
597 UScriptCode *scripts, int32_t capacity,
598 UErrorCode *pErrorCode) {
599 uint32_t scriptX;
600 int32_t length;
601 const uint16_t *scx;
602 uint16_t sx;
603 if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
604 return 0;
605 }
606 if(capacity<0 || (capacity>0 && scripts==NULL)) {
607 *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
608 return 0;
609 }
610 scriptX=u_getUnicodeProperties(c, 0)&UPROPS_SCRIPT_X_MASK;
611 if(scriptX<UPROPS_SCRIPT_X_WITH_COMMON) {
612 if(capacity==0) {
613 *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
614 } else {
615 scripts[0]=(UScriptCode)scriptX;
616 }
617 return 1;
618 }
619
620 scx=scriptExtensions+(scriptX&UPROPS_SCRIPT_MASK);
621 if(scriptX>=UPROPS_SCRIPT_X_WITH_OTHER) {
622 scx=scriptExtensions+scx[1];
623 }
624 length=0;
625 do {
626 sx=*scx++;
627 if(length<capacity) {
628 scripts[length]=(UScriptCode)(sx&0x7fff);
629 }
630 ++length;
631 } while(sx<0x8000);
632 if(length>capacity) {
633 *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
634 }
635 return length;
636 }
637
638 U_CAPI UBlockCode U_EXPORT2
ublock_getCode(UChar32 c)639 ublock_getCode(UChar32 c) {
640 return (UBlockCode)((u_getUnicodeProperties(c, 0)&UPROPS_BLOCK_MASK)>>UPROPS_BLOCK_SHIFT);
641 }
642
643 /* property starts for UnicodeSet ------------------------------------------- */
644
645 static UBool U_CALLCONV
_enumPropertyStartsRange(const void * context,UChar32 start,UChar32 end,uint32_t value)646 _enumPropertyStartsRange(const void *context, UChar32 start, UChar32 end, uint32_t value) {
647 /* add the start code point to the USet */
648 const USetAdder *sa=(const USetAdder *)context;
649 sa->add(sa->set, start);
650 (void)end;
651 (void)value;
652 return TRUE;
653 }
654
655 #define USET_ADD_CP_AND_NEXT(sa, cp) sa->add(sa->set, cp); sa->add(sa->set, cp+1)
656
657 U_CFUNC void U_EXPORT2
uchar_addPropertyStarts(const USetAdder * sa,UErrorCode * pErrorCode)658 uchar_addPropertyStarts(const USetAdder *sa, UErrorCode *pErrorCode) {
659 if(U_FAILURE(*pErrorCode)) {
660 return;
661 }
662
663 /* add the start code point of each same-value range of the main trie */
664 utrie2_enum(&propsTrie, NULL, _enumPropertyStartsRange, sa);
665
666 /* add code points with hardcoded properties, plus the ones following them */
667
668 /* add for u_isblank() */
669 USET_ADD_CP_AND_NEXT(sa, TAB);
670
671 /* add for IS_THAT_CONTROL_SPACE() */
672 sa->add(sa->set, CR+1); /* range TAB..CR */
673 sa->add(sa->set, 0x1c);
674 sa->add(sa->set, 0x1f+1);
675 USET_ADD_CP_AND_NEXT(sa, NL);
676
677 /* add for u_isIDIgnorable() what was not added above */
678 sa->add(sa->set, DEL); /* range DEL..NBSP-1, NBSP added below */
679 sa->add(sa->set, HAIRSP);
680 sa->add(sa->set, RLM+1);
681 sa->add(sa->set, INHSWAP);
682 sa->add(sa->set, NOMDIG+1);
683 USET_ADD_CP_AND_NEXT(sa, ZWNBSP);
684
685 /* add no-break spaces for u_isWhitespace() what was not added above */
686 USET_ADD_CP_AND_NEXT(sa, NBSP);
687 USET_ADD_CP_AND_NEXT(sa, FIGURESP);
688 USET_ADD_CP_AND_NEXT(sa, NNBSP);
689
690 /* add for u_digit() */
691 sa->add(sa->set, U_a);
692 sa->add(sa->set, U_z+1);
693 sa->add(sa->set, U_A);
694 sa->add(sa->set, U_Z+1);
695 sa->add(sa->set, U_FW_a);
696 sa->add(sa->set, U_FW_z+1);
697 sa->add(sa->set, U_FW_A);
698 sa->add(sa->set, U_FW_Z+1);
699
700 /* add for u_isxdigit() */
701 sa->add(sa->set, U_f+1);
702 sa->add(sa->set, U_F+1);
703 sa->add(sa->set, U_FW_f+1);
704 sa->add(sa->set, U_FW_F+1);
705
706 /* add for UCHAR_DEFAULT_IGNORABLE_CODE_POINT what was not added above */
707 sa->add(sa->set, WJ); /* range WJ..NOMDIG */
708 sa->add(sa->set, 0xfff0);
709 sa->add(sa->set, 0xfffb+1);
710 sa->add(sa->set, 0xe0000);
711 sa->add(sa->set, 0xe0fff+1);
712
713 /* add for UCHAR_GRAPHEME_BASE and others */
714 USET_ADD_CP_AND_NEXT(sa, CGJ);
715 }
716
717 U_CFUNC void U_EXPORT2
upropsvec_addPropertyStarts(const USetAdder * sa,UErrorCode * pErrorCode)718 upropsvec_addPropertyStarts(const USetAdder *sa, UErrorCode *pErrorCode) {
719 if(U_FAILURE(*pErrorCode)) {
720 return;
721 }
722
723 /* add the start code point of each same-value range of the properties vectors trie */
724 utrie2_enum(&propsVectorsTrie, NULL, _enumPropertyStartsRange, sa);
725 }
726