55 #define U8_COUNT_TRAIL_BYTES(leadByte) \ 56 (U8_IS_LEAD(leadByte) ? \ 57 ((uint8_t)(leadByte)>=0xe0)+((uint8_t)(leadByte)>=0xf0)+1 : 0) 70 #define U8_COUNT_TRAIL_BYTES_UNSAFE(leadByte) \ 71 (((uint8_t)(leadByte)>=0xc2)+((uint8_t)(leadByte)>=0xe0)+((uint8_t)(leadByte)>=0xf0)) 80 #define U8_MASK_LEAD_BYTE(leadByte, countTrailBytes) ((leadByte)&=(1<<(6-(countTrailBytes)))-1) 90 #define U8_LEAD3_T1_BITS "\x20\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x10\x30\x30" 97 #define U8_IS_VALID_LEAD3_AND_T1(lead, t1) (U8_LEAD3_T1_BITS[(lead)&0xf]&(1<<((uint8_t)(t1)>>5))) 107 #define U8_LEAD4_T1_BITS "\x00\x00\x00\x00\x00\x00\x00\x00\x1E\x0F\x0F\x0F\x00\x00\x00\x00" 114 #define U8_IS_VALID_LEAD4_AND_T1(lead, t1) (U8_LEAD4_T1_BITS[(uint8_t)(t1)>>4]&(1<<((lead)&7))) 172 #define U8_IS_SINGLE(c) (((c)&0x80)==0) 180 #define U8_IS_LEAD(c) ((uint8_t)((c)-0xc2)<=0x32) 189 #define U8_IS_TRAIL(c) ((int8_t)(c)<-0x40) 198 #define U8_LENGTH(c) \ 199 ((uint32_t)(c)<=0x7f ? 1 : \ 200 ((uint32_t)(c)<=0x7ff ? 2 : \ 201 ((uint32_t)(c)<=0xd7ff ? 3 : \ 202 ((uint32_t)(c)<=0xdfff || (uint32_t)(c)>0x10ffff ? 0 : \ 203 ((uint32_t)(c)<=0xffff ? 3 : 4)\ 214 #define U8_MAX_LENGTH 4 232 #define U8_GET_UNSAFE(s, i, c) { \ 233 int32_t _u8_get_unsafe_index=(int32_t)(i); \ 234 U8_SET_CP_START_UNSAFE(s, _u8_get_unsafe_index); \ 235 U8_NEXT_UNSAFE(s, _u8_get_unsafe_index, c); \ 259 #define U8_GET(s, start, i, length, c) { \ 260 int32_t _u8_get_index=(i); \ 261 U8_SET_CP_START(s, start, _u8_get_index); \ 262 U8_NEXT(s, _u8_get_index, length, c); \ 290 #define U8_GET_OR_FFFD(s, start, i, length, c) { \ 291 int32_t _u8_get_index=(i); \ 292 U8_SET_CP_START(s, start, _u8_get_index); \ 293 U8_NEXT_OR_FFFD(s, _u8_get_index, length, c); \ 315 #define U8_NEXT_UNSAFE(s, i, c) { \ 316 (c)=(uint8_t)(s)[(i)++]; \ 317 if(!U8_IS_SINGLE(c)) { \ 319 (c)=(((c)&0x1f)<<6)|((s)[(i)++]&0x3f); \ 320 } else if((c)<0xf0) { \ 322 (c)=(UChar)(((c)<<12)|(((s)[i]&0x3f)<<6)|((s)[(i)+1]&0x3f)); \ 325 (c)=(((c)&7)<<18)|(((s)[i]&0x3f)<<12)|(((s)[(i)+1]&0x3f)<<6)|((s)[(i)+2]&0x3f); \ 351 #define U8_NEXT(s, i, length, c) { \ 352 (c)=(uint8_t)(s)[(i)++]; \ 353 if(!U8_IS_SINGLE(c)) { \ 354 uint8_t __t1, __t2; \ 356 (0xe0<=(c) && (c)<0xf0) && \ 357 (((i)+1)<(length) || (length)<0) && \ 358 U8_IS_VALID_LEAD3_AND_T1((c), __t1=(s)[i]) && \ 359 (__t2=(s)[(i)+1]-0x80)<=0x3f) { \ 360 (c)=(((c)&0xf)<<12)|((__t1&0x3f)<<6)|__t2; \ 363 ((c)<0xe0 && (c)>=0xc2) && \ 365 (__t1=(s)[i]-0x80)<=0x3f) { \ 366 (c)=(((c)&0x1f)<<6)|__t1; \ 370 (c)=utf8_nextCharSafeBody((const uint8_t *)s, &(i), (length), c, -1); \ 399 #define U8_NEXT_OR_FFFD(s, i, length, c) { \ 400 (c)=(uint8_t)(s)[(i)++]; \ 401 if(!U8_IS_SINGLE(c)) { \ 402 uint8_t __t1, __t2; \ 404 (0xe0<=(c) && (c)<0xf0) && \ 405 (((i)+1)<(length) || (length)<0) && \ 406 U8_IS_VALID_LEAD3_AND_T1((c), __t1=(s)[i]) && \ 407 (__t2=(s)[(i)+1]-0x80)<=0x3f) { \ 408 (c)=(((c)&0xf)<<12)|((__t1&0x3f)<<6)|__t2; \ 411 ((c)<0xe0 && (c)>=0xc2) && \ 413 (__t1=(s)[i]-0x80)<=0x3f) { \ 414 (c)=(((c)&0x1f)<<6)|__t1; \ 418 (c)=utf8_nextCharSafeBody((const uint8_t *)s, &(i), (length), c, -3); \ 436 #define U8_APPEND_UNSAFE(s, i, c) { \ 437 if((uint32_t)(c)<=0x7f) { \ 438 (s)[(i)++]=(uint8_t)(c); \ 440 if((uint32_t)(c)<=0x7ff) { \ 441 (s)[(i)++]=(uint8_t)(((c)>>6)|0xc0); \ 443 if((uint32_t)(c)<=0xffff) { \ 444 (s)[(i)++]=(uint8_t)(((c)>>12)|0xe0); \ 446 (s)[(i)++]=(uint8_t)(((c)>>18)|0xf0); \ 447 (s)[(i)++]=(uint8_t)((((c)>>12)&0x3f)|0x80); \ 449 (s)[(i)++]=(uint8_t)((((c)>>6)&0x3f)|0x80); \ 451 (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80); \ 472 #define U8_APPEND(s, i, capacity, c, isError) { \ 473 if((uint32_t)(c)<=0x7f) { \ 474 (s)[(i)++]=(uint8_t)(c); \ 475 } else if((uint32_t)(c)<=0x7ff && (i)+1<(capacity)) { \ 476 (s)[(i)++]=(uint8_t)(((c)>>6)|0xc0); \ 477 (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80); \ 478 } else if((uint32_t)(c)<=0xd7ff && (i)+2<(capacity)) { \ 479 (s)[(i)++]=(uint8_t)(((c)>>12)|0xe0); \ 480 (s)[(i)++]=(uint8_t)((((c)>>6)&0x3f)|0x80); \ 481 (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80); \ 483 (i)=utf8_appendCharSafeBody(s, (i), (capacity), c, &(isError)); \ 497 #define U8_FWD_1_UNSAFE(s, i) { \ 498 (i)+=1+U8_COUNT_TRAIL_BYTES_UNSAFE((s)[i]); \ 514 #define U8_FWD_1(s, i, length) { \ 515 uint8_t __b=(s)[(i)++]; \ 516 if(U8_IS_LEAD(__b) && (i)!=(length)) { \ 517 uint8_t __t1=(s)[i]; \ 518 if((0xe0<=__b && __b<0xf0)) { \ 519 if(U8_IS_VALID_LEAD3_AND_T1(__b, __t1) && \ 520 ++(i)!=(length) && U8_IS_TRAIL((s)[i])) { \ 523 } else if(__b<0xe0) { \ 524 if(U8_IS_TRAIL(__t1)) { \ 528 if(U8_IS_VALID_LEAD4_AND_T1(__b, __t1) && \ 529 ++(i)!=(length) && U8_IS_TRAIL((s)[i]) && \ 530 ++(i)!=(length) && U8_IS_TRAIL((s)[i])) { \ 549 #define U8_FWD_N_UNSAFE(s, i, n) { \ 552 U8_FWD_1_UNSAFE(s, i); \ 572 #define U8_FWD_N(s, i, length, n) { \ 574 while(__N>0 && ((i)<(length) || ((length)<0 && (s)[i]!=0))) { \ 575 U8_FWD_1(s, i, length); \ 593 #define U8_SET_CP_START_UNSAFE(s, i) { \ 594 while(U8_IS_TRAIL((s)[i])) { --(i); } \ 611 #define U8_SET_CP_START(s, start, i) { \ 612 if(U8_IS_TRAIL((s)[(i)])) { \ 613 (i)=utf8_back1SafeBody(s, start, (i)); \ 638 #define U8_PREV_UNSAFE(s, i, c) { \ 639 (c)=(uint8_t)(s)[--(i)]; \ 640 if(U8_IS_TRAIL(c)) { \ 641 uint8_t __b, __count=1, __shift=6; \ 648 U8_MASK_LEAD_BYTE(__b, __count); \ 649 (c)|=(UChar32)__b<<__shift; \ 652 (c)|=(UChar32)(__b&0x3f)<<__shift; \ 680 #define U8_PREV(s, start, i, c) { \ 681 (c)=(uint8_t)(s)[--(i)]; \ 682 if(!U8_IS_SINGLE(c)) { \ 683 (c)=utf8_prevCharSafeBody((const uint8_t *)s, start, &(i), c, -1); \ 711 #define U8_PREV_OR_FFFD(s, start, i, c) { \ 712 (c)=(uint8_t)(s)[--(i)]; \ 713 if(!U8_IS_SINGLE(c)) { \ 714 (c)=utf8_prevCharSafeBody((const uint8_t *)s, start, &(i), c, -3); \ 729 #define U8_BACK_1_UNSAFE(s, i) { \ 730 while(U8_IS_TRAIL((s)[--(i)])) {} \ 745 #define U8_BACK_1(s, start, i) { \ 746 if(U8_IS_TRAIL((s)[--(i)])) { \ 747 (i)=utf8_back1SafeBody(s, start, (i)); \ 764 #define U8_BACK_N_UNSAFE(s, i, n) { \ 767 U8_BACK_1_UNSAFE(s, i); \ 786 #define U8_BACK_N(s, start, i, n) { \ 788 while(__N>0 && (i)>(start)) { \ 789 U8_BACK_1(s, start, i); \ 807 #define U8_SET_CP_LIMIT_UNSAFE(s, i) { \ 808 U8_BACK_1_UNSAFE(s, i); \ 809 U8_FWD_1_UNSAFE(s, i); \ 829 #define U8_SET_CP_LIMIT(s, start, i, length) { \ 830 if((start)<(i) && ((i)<(length) || (length)<0)) { \ 831 U8_BACK_1(s, start, i); \ 832 U8_FWD_1(s, i, length); \ UChar32 utf8_nextCharSafeBody(const uint8_t *s, int32_t *pi, int32_t length, UChar32 c, UBool strict)
Function for handling "next code point" with error-checking.
Basic types and constants for UTF.
C API: Code point macros.
UChar32 utf8_prevCharSafeBody(const uint8_t *s, int32_t start, int32_t *pi, UChar32 c, UBool strict)
Function for handling "previous code point" with error-checking.
int32_t utf8_back1SafeBody(const uint8_t *s, int32_t start, int32_t i)
Function for handling "skip backward one code point" with error-checking.
int32_t UChar32
Define UChar32 as a type for single Unicode code points.
int32_t utf8_appendCharSafeBody(uint8_t *s, int32_t i, int32_t length, UChar32 c, UBool *pIsError)
Function for handling "append code point" with error-checking.
#define U_STABLE
This is used to declare a function as a stable public ICU C API.
int8_t UBool
The ICU boolean type.