1 /* 2 * Copyright (C) 1999-2004, International Business Machines Corporation and others. All Rights Reserved. 3 * 4 */ 5 6 #ifndef UnicodeMacrosFromICU_h 7 #define UnicodeMacrosFromICU_h 8 9 // some defines from ICU 10 11 #define U_IS_BMP(c) ((UChar32)(c)<=0xffff) 12 #define U16_IS_LEAD(c) (((c)&0xfffffc00)==0xd800) 13 #define U16_IS_TRAIL(c) (((c)&0xfffffc00)==0xdc00) 14 #define U16_SURROGATE_OFFSET ((0xd800<<10UL)+0xdc00-0x10000) 15 #define U16_GET_SUPPLEMENTARY(lead, trail) \ 16 (((UChar32)(lead)<<10UL)+(UChar32)(trail)-U16_SURROGATE_OFFSET) 17 18 #define U16_LEAD(supplementary) (UChar)(((supplementary)>>10)+0xd7c0) 19 #define U16_TRAIL(supplementary) (UChar)(((supplementary)&0x3ff)|0xdc00) 20 #define U16_LENGTH(c) ((uint32_t)(c) <= 0xffff ? 1 : 2) 21 22 #define U_IS_SUPPLEMENTARY(c) ((UChar32)((c)-0x10000)<=0xfffff) 23 #define U_IS_SURROGATE(c) (((c)&0xfffff800)==0xd800) 24 #define U16_IS_SINGLE(c) !U_IS_SURROGATE(c) 25 #define U16_IS_SURROGATE(c) U_IS_SURROGATE(c) 26 #define U16_IS_SURROGATE_LEAD(c) (((c)&0x400)==0) 27 28 #define U16_GET(s, start, i, length, c) { \ 29 (c)=(s)[i]; \ 30 if(U16_IS_SURROGATE(c)) { \ 31 uint16_t __c2; \ 32 if(U16_IS_SURROGATE_LEAD(c)) { \ 33 if((i)+1<(length) && U16_IS_TRAIL(__c2=(s)[(i)+1])) { \ 34 (c)=U16_GET_SUPPLEMENTARY((c), __c2); \ 35 } \ 36 } else { \ 37 if((i)-1>=(start) && U16_IS_LEAD(__c2=(s)[(i)-1])) { \ 38 (c)=U16_GET_SUPPLEMENTARY(__c2, (c)); \ 39 } \ 40 } \ 41 } \ 42 } 43 44 #define U16_PREV(s, start, i, c) { \ 45 (c)=(s)[--(i)]; \ 46 if(U16_IS_TRAIL(c)) { \ 47 uint16_t __c2; \ 48 if((i)>(start) && U16_IS_LEAD(__c2=(s)[(i)-1])) { \ 49 --(i); \ 50 (c)=U16_GET_SUPPLEMENTARY(__c2, (c)); \ 51 } \ 52 } \ 53 } 54 55 #define U16_BACK_1(s, start, i) { \ 56 if(U16_IS_TRAIL((s)[--(i)]) && (i)>(start) && U16_IS_LEAD((s)[(i)-1])) { \ 57 --(i); \ 58 } \ 59 } 60 61 #define U16_NEXT(s, i, length, c) { \ 62 (c)=(s)[(i)++]; \ 63 if(U16_IS_LEAD(c)) { \ 64 uint16_t __c2; \ 65 if((i)<(length) && U16_IS_TRAIL(__c2=(s)[(i)])) { \ 66 ++(i); \ 67 (c)=U16_GET_SUPPLEMENTARY((c), __c2); \ 68 } \ 69 } \ 70 } 71 72 #define U16_FWD_1(s, i, length) { \ 73 if(U16_IS_LEAD((s)[(i)++]) && (i)<(length) && U16_IS_TRAIL((s)[i])) { \ 74 ++(i); \ 75 } \ 76 } 77 78 #define U_MASK(x) ((uint32_t)1<<(x)) 79 80 #define U8_MAX_LENGTH 4 81 82 #define U8_APPEND_UNSAFE(s, i, c) { \ 83 if((uint32_t)(c)<=0x7f) { \ 84 (s)[(i)++]=(uint8_t)(c); \ 85 } else { \ 86 if((uint32_t)(c)<=0x7ff) { \ 87 (s)[(i)++]=(uint8_t)(((c)>>6)|0xc0); \ 88 } else { \ 89 if((uint32_t)(c)<=0xffff) { \ 90 (s)[(i)++]=(uint8_t)(((c)>>12)|0xe0); \ 91 } else { \ 92 (s)[(i)++]=(uint8_t)(((c)>>18)|0xf0); \ 93 (s)[(i)++]=(uint8_t)((((c)>>12)&0x3f)|0x80); \ 94 } \ 95 (s)[(i)++]=(uint8_t)((((c)>>6)&0x3f)|0x80); \ 96 } \ 97 (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80); \ 98 } \ 99 } 100 #endif 101
