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00035 #ifndef __UTF_H__
00036 # include "unicode/utf.h"
00037 #endif
00038
00039 #ifndef __UTF8_H__
00040 #define __UTF8_H__
00041
00042
00043
00050 #ifdef U_UTF8_IMPL
00051 U_CAPI const uint8_t
00052 utf8_countTrailBytes[256];
00053 #else
00054 U_CFUNC U_IMPORT const uint8_t
00055 utf8_countTrailBytes[256];
00056 #endif
00057
00062 #define U8_COUNT_TRAIL_BYTES(leadByte) (utf8_countTrailBytes[(uint8_t)leadByte])
00063
00068 #define U8_MASK_LEAD_BYTE(leadByte, countTrailBytes) ((leadByte)&=(1<<(6-(countTrailBytes)))-1)
00069
00074 U_CAPI UChar32 U_EXPORT2
00075 utf8_nextCharSafeBody(const uint8_t *s, int32_t *pi, int32_t length, UChar32 c, UBool strict);
00076
00081 U_CAPI int32_t U_EXPORT2
00082 utf8_appendCharSafeBody(uint8_t *s, int32_t i, int32_t length, UChar32 c, UBool *pIsError);
00083
00088 U_CAPI UChar32 U_EXPORT2
00089 utf8_prevCharSafeBody(const uint8_t *s, int32_t start, int32_t *pi, UChar32 c, UBool strict);
00090
00095 U_CAPI int32_t U_EXPORT2
00096 utf8_back1SafeBody(const uint8_t *s, int32_t start, int32_t i);
00097
00098
00099
00106 #define U8_IS_SINGLE(c) (((c)&0x80)==0)
00107
00114 #define U8_IS_LEAD(c) ((uint8_t)((c)-0xc0)<0x3e)
00115
00122 #define U8_IS_TRAIL(c) (((c)&0xc0)==0x80)
00123
00131 #define U8_LENGTH(c) \
00132 ((uint32_t)(c)<=0x7f ? 1 : \
00133 ((uint32_t)(c)<=0x7ff ? 2 : \
00134 ((uint32_t)(c)<=0xd7ff ? 3 : \
00135 ((uint32_t)(c)<=0xdfff || (uint32_t)(c)>0x10ffff ? 0 : \
00136 ((uint32_t)(c)<=0xffff ? 3 : 4)\
00137 ) \
00138 ) \
00139 ) \
00140 )
00141
00147 #define U8_MAX_LENGTH 4
00148
00165 #define U8_GET_UNSAFE(s, i, c) { \
00166 int32_t __I=(int32_t)(i); \
00167 U8_SET_CP_START_UNSAFE(s, __I); \
00168 U8_NEXT_UNSAFE(s, __I, c); \
00169 }
00170
00189 #define U8_GET(s, start, i, length, c) { \
00190 int32_t __I=(int32_t)(i); \
00191 U8_SET_CP_START(s, start, __I); \
00192 U8_NEXT(s, __I, length, c); \
00193 }
00194
00195
00196
00214 #define U8_NEXT_UNSAFE(s, i, c) { \
00215 (c)=(s)[(i)++]; \
00216 if((uint8_t)((c)-0xc0)<0x35) { \
00217 uint8_t __count=U8_COUNT_TRAIL_BYTES(c); \
00218 U8_MASK_LEAD_BYTE(c, __count); \
00219 switch(__count) { \
00220 \
00221 case 3: \
00222 (c)=((c)<<6)|((s)[(i)++]&0x3f); \
00223 case 2: \
00224 (c)=((c)<<6)|((s)[(i)++]&0x3f); \
00225 case 1: \
00226 (c)=((c)<<6)|((s)[(i)++]&0x3f); \
00227 \
00228 break; \
00229 } \
00230 } \
00231 }
00232
00251 #define U8_NEXT(s, i, length, c) { \
00252 (c)=(s)[(i)++]; \
00253 if((c)>=0x80) { \
00254 if(U8_IS_LEAD(c)) { \
00255 (c)=utf8_nextCharSafeBody(s, &(i), (int32_t)(length), c, -1); \
00256 } else { \
00257 (c)=U_SENTINEL; \
00258 } \
00259 } \
00260 }
00261
00275 #define U8_APPEND_UNSAFE(s, i, c) { \
00276 if((uint32_t)(c)<=0x7f) { \
00277 (s)[(i)++]=(uint8_t)(c); \
00278 } else { \
00279 if((uint32_t)(c)<=0x7ff) { \
00280 (s)[(i)++]=(uint8_t)(((c)>>6)|0xc0); \
00281 } else { \
00282 if((uint32_t)(c)<=0xffff) { \
00283 (s)[(i)++]=(uint8_t)(((c)>>12)|0xe0); \
00284 } else { \
00285 (s)[(i)++]=(uint8_t)(((c)>>18)|0xf0); \
00286 (s)[(i)++]=(uint8_t)((((c)>>12)&0x3f)|0x80); \
00287 } \
00288 (s)[(i)++]=(uint8_t)((((c)>>6)&0x3f)|0x80); \
00289 } \
00290 (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80); \
00291 } \
00292 }
00293
00311 #define U8_APPEND(s, i, length, c, isError) { \
00312 if((uint32_t)(c)<=0x7f) { \
00313 (s)[(i)++]=(uint8_t)(c); \
00314 } else { \
00315 (i)=utf8_appendCharSafeBody(s, (int32_t)(i), (int32_t)(length), c, &(isError)); \
00316 } \
00317 }
00318
00329 #define U8_FWD_1_UNSAFE(s, i) { \
00330 (i)+=1+U8_COUNT_TRAIL_BYTES((s)[i]); \
00331 }
00332
00344 #define U8_FWD_1(s, i, length) { \
00345 uint8_t __b=(s)[(i)++]; \
00346 if(U8_IS_LEAD(__b)) { \
00347 uint8_t __count=U8_COUNT_TRAIL_BYTES(__b); \
00348 if((i)+__count>(length)) { \
00349 __count=(uint8_t)((length)-(i)); \
00350 } \
00351 while(__count>0 && U8_IS_TRAIL((s)[i])) { \
00352 ++(i); \
00353 --__count; \
00354 } \
00355 } \
00356 }
00357
00370 #define U8_FWD_N_UNSAFE(s, i, n) { \
00371 int32_t __N=(n); \
00372 while(__N>0) { \
00373 U8_FWD_1_UNSAFE(s, i); \
00374 --__N; \
00375 } \
00376 }
00377
00391 #define U8_FWD_N(s, i, length, n) { \
00392 int32_t __N=(n); \
00393 while(__N>0 && (i)<(length)) { \
00394 U8_FWD_1(s, i, length); \
00395 --__N; \
00396 } \
00397 }
00398
00412 #define U8_SET_CP_START_UNSAFE(s, i) { \
00413 while(U8_IS_TRAIL((s)[i])) { --(i); } \
00414 }
00415
00430 #define U8_SET_CP_START(s, start, i) { \
00431 if(U8_IS_TRAIL((s)[(i)])) { \
00432 (i)=utf8_back1SafeBody(s, start, (int32_t)(i)); \
00433 } \
00434 }
00435
00436
00437
00457 #define U8_PREV_UNSAFE(s, i, c) { \
00458 (c)=(s)[--(i)]; \
00459 if(U8_IS_TRAIL(c)) { \
00460 uint8_t __b, __count=1, __shift=6; \
00461 \
00462 \
00463 (c)&=0x3f; \
00464 for(;;) { \
00465 __b=(s)[--(i)]; \
00466 if(__b>=0xc0) { \
00467 U8_MASK_LEAD_BYTE(__b, __count); \
00468 (c)|=(UChar32)__b<<__shift; \
00469 break; \
00470 } else { \
00471 (c)|=(UChar32)(__b&0x3f)<<__shift; \
00472 ++__count; \
00473 __shift+=6; \
00474 } \
00475 } \
00476 } \
00477 }
00478
00499 #define U8_PREV(s, start, i, c) { \
00500 (c)=(s)[--(i)]; \
00501 if((c)>=0x80) { \
00502 if((c)<=0xbf) { \
00503 (c)=utf8_prevCharSafeBody(s, start, &(i), c, -1); \
00504 } else { \
00505 (c)=U_SENTINEL; \
00506 } \
00507 } \
00508 }
00509
00521 #define U8_BACK_1_UNSAFE(s, i) { \
00522 while(U8_IS_TRAIL((s)[--(i)])) {} \
00523 }
00524
00537 #define U8_BACK_1(s, start, i) { \
00538 if(U8_IS_TRAIL((s)[--(i)])) { \
00539 (i)=utf8_back1SafeBody(s, start, (int32_t)(i)); \
00540 } \
00541 }
00542
00556 #define U8_BACK_N_UNSAFE(s, i, n) { \
00557 int32_t __N=(n); \
00558 while(__N>0) { \
00559 U8_BACK_1_UNSAFE(s, i); \
00560 --__N; \
00561 } \
00562 }
00563
00578 #define U8_BACK_N(s, start, i, n) { \
00579 int32_t __N=(n); \
00580 while(__N>0 && (i)>(start)) { \
00581 U8_BACK_1(s, start, i); \
00582 --__N; \
00583 } \
00584 }
00585
00599 #define U8_SET_CP_LIMIT_UNSAFE(s, i) { \
00600 U8_BACK_1_UNSAFE(s, i); \
00601 U8_FWD_1_UNSAFE(s, i); \
00602 }
00603
00619 #define U8_SET_CP_LIMIT(s, start, i, length) { \
00620 if((start)<(i) && (i)<(length)) { \
00621 U8_BACK_1(s, start, i); \
00622 U8_FWD_1(s, i, length); \
00623 } \
00624 }
00625
00626 #endif