Index: public/common/unicode/utf8.h |
diff --git a/public/common/unicode/utf8.h b/public/common/unicode/utf8.h |
deleted file mode 100644 |
index 6405795a5a1c53698846d11015699b61c3102224..0000000000000000000000000000000000000000 |
--- a/public/common/unicode/utf8.h |
+++ /dev/null |
@@ -1,683 +0,0 @@ |
-/* |
-******************************************************************************* |
-* |
-* Copyright (C) 1999-2009, International Business Machines |
-* Corporation and others. All Rights Reserved. |
-* |
-******************************************************************************* |
-* file name: utf8.h |
-* encoding: US-ASCII |
-* tab size: 8 (not used) |
-* indentation:4 |
-* |
-* created on: 1999sep13 |
-* created by: Markus W. Scherer |
-*/ |
- |
-/** |
- * \file |
- * \brief C API: 8-bit Unicode handling macros |
- * |
- * This file defines macros to deal with 8-bit Unicode (UTF-8) code units (bytes) and strings. |
- * utf8.h is included by utf.h after unicode/umachine.h |
- * and some common definitions. |
- * |
- * For more information see utf.h and the ICU User Guide Strings chapter |
- * (http://icu-project.org/userguide/strings.html). |
- * |
- * <em>Usage:</em> |
- * ICU coding guidelines for if() statements should be followed when using these macros. |
- * Compound statements (curly braces {}) must be used for if-else-while... |
- * bodies and all macro statements should be terminated with semicolon. |
- */ |
- |
-#ifndef __UTF8_H__ |
-#define __UTF8_H__ |
- |
-/* utf.h must be included first. */ |
-#ifndef __UTF_H__ |
-# include "unicode/utf.h" |
-#endif |
- |
-/* internal definitions ----------------------------------------------------- */ |
- |
-/** |
- * \var utf8_countTrailBytes |
- * Internal array with numbers of trail bytes for any given byte used in |
- * lead byte position. |
- * |
- * This is internal since it is not meant to be called directly by external clients; |
- * however it is called by public macros in this file and thus must remain stable, |
- * and should not be hidden when other internal functions are hidden (otherwise |
- * public macros would fail to compile). |
- * @internal |
- */ |
-#ifdef U_UTF8_IMPL |
-U_EXPORT const uint8_t |
-#elif defined(U_STATIC_IMPLEMENTATION) || defined(U_COMMON_IMPLEMENTATION) |
-U_CFUNC const uint8_t |
-#else |
-U_CFUNC U_IMPORT const uint8_t /* U_IMPORT2? */ /*U_IMPORT*/ |
-#endif |
-utf8_countTrailBytes[256]; |
- |
-/** |
- * Count the trail bytes for a UTF-8 lead byte. |
- * |
- * This is internal since it is not meant to be called directly by external clients; |
- * however it is called by public macros in this file and thus must remain stable. |
- * @internal |
- */ |
-#define U8_COUNT_TRAIL_BYTES(leadByte) (utf8_countTrailBytes[(uint8_t)leadByte]) |
- |
-/** |
- * Mask a UTF-8 lead byte, leave only the lower bits that form part of the code point value. |
- * |
- * This is internal since it is not meant to be called directly by external clients; |
- * however it is called by public macros in this file and thus must remain stable. |
- * @internal |
- */ |
-#define U8_MASK_LEAD_BYTE(leadByte, countTrailBytes) ((leadByte)&=(1<<(6-(countTrailBytes)))-1) |
- |
-/** |
- * Function for handling "next code point" with error-checking. |
- * |
- * This is internal since it is not meant to be called directly by external clients; |
- * however it is U_STABLE (not U_INTERNAL) since it is called by public macros in this |
- * file and thus must remain stable, and should not be hidden when other internal |
- * functions are hidden (otherwise public macros would fail to compile). |
- * @internal |
- */ |
-U_STABLE UChar32 U_EXPORT2 |
-utf8_nextCharSafeBody(const uint8_t *s, int32_t *pi, int32_t length, UChar32 c, UBool strict); |
- |
-/** |
- * Function for handling "append code point" with error-checking. |
- * |
- * This is internal since it is not meant to be called directly by external clients; |
- * however it is U_STABLE (not U_INTERNAL) since it is called by public macros in this |
- * file and thus must remain stable, and should not be hidden when other internal |
- * functions are hidden (otherwise public macros would fail to compile). |
- * @internal |
- */ |
-U_STABLE int32_t U_EXPORT2 |
-utf8_appendCharSafeBody(uint8_t *s, int32_t i, int32_t length, UChar32 c, UBool *pIsError); |
- |
-/** |
- * Function for handling "previous code point" with error-checking. |
- * |
- * This is internal since it is not meant to be called directly by external clients; |
- * however it is U_STABLE (not U_INTERNAL) since it is called by public macros in this |
- * file and thus must remain stable, and should not be hidden when other internal |
- * functions are hidden (otherwise public macros would fail to compile). |
- * @internal |
- */ |
-U_STABLE UChar32 U_EXPORT2 |
-utf8_prevCharSafeBody(const uint8_t *s, int32_t start, int32_t *pi, UChar32 c, UBool strict); |
- |
-/** |
- * Function for handling "skip backward one code point" with error-checking. |
- * |
- * This is internal since it is not meant to be called directly by external clients; |
- * however it is U_STABLE (not U_INTERNAL) since it is called by public macros in this |
- * file and thus must remain stable, and should not be hidden when other internal |
- * functions are hidden (otherwise public macros would fail to compile). |
- * @internal |
- */ |
-U_STABLE int32_t U_EXPORT2 |
-utf8_back1SafeBody(const uint8_t *s, int32_t start, int32_t i); |
- |
-/* single-code point definitions -------------------------------------------- */ |
- |
-/** |
- * Does this code unit (byte) encode a code point by itself (US-ASCII 0..0x7f)? |
- * @param c 8-bit code unit (byte) |
- * @return TRUE or FALSE |
- * @stable ICU 2.4 |
- */ |
-#define U8_IS_SINGLE(c) (((c)&0x80)==0) |
- |
-/** |
- * Is this code unit (byte) a UTF-8 lead byte? |
- * @param c 8-bit code unit (byte) |
- * @return TRUE or FALSE |
- * @stable ICU 2.4 |
- */ |
-#define U8_IS_LEAD(c) ((uint8_t)((c)-0xc0)<0x3e) |
- |
-/** |
- * Is this code unit (byte) a UTF-8 trail byte? |
- * @param c 8-bit code unit (byte) |
- * @return TRUE or FALSE |
- * @stable ICU 2.4 |
- */ |
-#define U8_IS_TRAIL(c) (((c)&0xc0)==0x80) |
- |
-/** |
- * How many code units (bytes) are used for the UTF-8 encoding |
- * of this Unicode code point? |
- * @param c 32-bit code point |
- * @return 1..4, or 0 if c is a surrogate or not a Unicode code point |
- * @stable ICU 2.4 |
- */ |
-#define U8_LENGTH(c) \ |
- ((uint32_t)(c)<=0x7f ? 1 : \ |
- ((uint32_t)(c)<=0x7ff ? 2 : \ |
- ((uint32_t)(c)<=0xd7ff ? 3 : \ |
- ((uint32_t)(c)<=0xdfff || (uint32_t)(c)>0x10ffff ? 0 : \ |
- ((uint32_t)(c)<=0xffff ? 3 : 4)\ |
- ) \ |
- ) \ |
- ) \ |
- ) |
- |
-/** |
- * The maximum number of UTF-8 code units (bytes) per Unicode code point (U+0000..U+10ffff). |
- * @return 4 |
- * @stable ICU 2.4 |
- */ |
-#define U8_MAX_LENGTH 4 |
- |
-/** |
- * Get a code point from a string at a random-access offset, |
- * without changing the offset. |
- * The offset may point to either the lead byte or one of the trail bytes |
- * for a code point, in which case the macro will read all of the bytes |
- * for the code point. |
- * The result is undefined if the offset points to an illegal UTF-8 |
- * byte sequence. |
- * Iteration through a string is more efficient with U8_NEXT_UNSAFE or U8_NEXT. |
- * |
- * @param s const uint8_t * string |
- * @param i string offset |
- * @param c output UChar32 variable |
- * @see U8_GET |
- * @stable ICU 2.4 |
- */ |
-#define U8_GET_UNSAFE(s, i, c) { \ |
- int32_t _u8_get_unsafe_index=(int32_t)(i); \ |
- U8_SET_CP_START_UNSAFE(s, _u8_get_unsafe_index); \ |
- U8_NEXT_UNSAFE(s, _u8_get_unsafe_index, c); \ |
-} |
- |
-/** |
- * Get a code point from a string at a random-access offset, |
- * without changing the offset. |
- * The offset may point to either the lead byte or one of the trail bytes |
- * for a code point, in which case the macro will read all of the bytes |
- * for the code point. |
- * If the offset points to an illegal UTF-8 byte sequence, then |
- * c is set to a negative value. |
- * Iteration through a string is more efficient with U8_NEXT_UNSAFE or U8_NEXT. |
- * |
- * @param s const uint8_t * string |
- * @param start starting string offset |
- * @param i string offset, must be start<=i<length |
- * @param length string length |
- * @param c output UChar32 variable, set to <0 in case of an error |
- * @see U8_GET_UNSAFE |
- * @stable ICU 2.4 |
- */ |
-#define U8_GET(s, start, i, length, c) { \ |
- int32_t _u8_get_index=(int32_t)(i); \ |
- U8_SET_CP_START(s, start, _u8_get_index); \ |
- U8_NEXT(s, _u8_get_index, length, c); \ |
-} |
- |
-/* definitions with forward iteration --------------------------------------- */ |
- |
-/** |
- * Get a code point from a string at a code point boundary offset, |
- * and advance the offset to the next code point boundary. |
- * (Post-incrementing forward iteration.) |
- * "Unsafe" macro, assumes well-formed UTF-8. |
- * |
- * The offset may point to the lead byte of a multi-byte sequence, |
- * in which case the macro will read the whole sequence. |
- * The result is undefined if the offset points to a trail byte |
- * or an illegal UTF-8 sequence. |
- * |
- * @param s const uint8_t * string |
- * @param i string offset |
- * @param c output UChar32 variable |
- * @see U8_NEXT |
- * @stable ICU 2.4 |
- */ |
-#define U8_NEXT_UNSAFE(s, i, c) { \ |
- (c)=(uint8_t)(s)[(i)++]; \ |
- if((uint8_t)((c)-0xc0)<0x35) { \ |
- uint8_t __count=U8_COUNT_TRAIL_BYTES(c); \ |
- U8_MASK_LEAD_BYTE(c, __count); \ |
- switch(__count) { \ |
- /* each following branch falls through to the next one */ \ |
- case 3: \ |
- (c)=((c)<<6)|((s)[(i)++]&0x3f); \ |
- case 2: \ |
- (c)=((c)<<6)|((s)[(i)++]&0x3f); \ |
- case 1: \ |
- (c)=((c)<<6)|((s)[(i)++]&0x3f); \ |
- /* no other branches to optimize switch() */ \ |
- break; \ |
- } \ |
- } \ |
-} |
- |
-/** |
- * Get a code point from a string at a code point boundary offset, |
- * and advance the offset to the next code point boundary. |
- * (Post-incrementing forward iteration.) |
- * "Safe" macro, checks for illegal sequences and for string boundaries. |
- * |
- * The offset may point to the lead byte of a multi-byte sequence, |
- * in which case the macro will read the whole sequence. |
- * If the offset points to a trail byte or an illegal UTF-8 sequence, then |
- * c is set to a negative value. |
- * |
- * @param s const uint8_t * string |
- * @param i string offset, must be i<length |
- * @param length string length |
- * @param c output UChar32 variable, set to <0 in case of an error |
- * @see U8_NEXT_UNSAFE |
- * @stable ICU 2.4 |
- */ |
-#define U8_NEXT(s, i, length, c) { \ |
- (c)=(uint8_t)(s)[(i)++]; \ |
- if((c)>=0x80) { \ |
- uint8_t __t1, __t2; \ |
- if( /* handle U+1000..U+CFFF inline */ \ |
- (0xe0<(c) && (c)<=0xec) && \ |
- (((i)+1)<(length)) && \ |
- (__t1=(uint8_t)((s)[i]-0x80))<=0x3f && \ |
- (__t2=(uint8_t)((s)[(i)+1]-0x80))<= 0x3f \ |
- ) { \ |
- /* no need for (c&0xf) because the upper bits are truncated after <<12 in the cast to (UChar) */ \ |
- (c)=(UChar)(((c)<<12)|(__t1<<6)|__t2); \ |
- (i)+=2; \ |
- } else if( /* handle U+0080..U+07FF inline */ \ |
- ((c)<0xe0 && (c)>=0xc2) && \ |
- ((i)<(length)) && \ |
- (__t1=(uint8_t)((s)[i]-0x80))<=0x3f \ |
- ) { \ |
- (c)=(UChar)((((c)&0x1f)<<6)|__t1); \ |
- ++(i); \ |
- } else if(U8_IS_LEAD(c)) { \ |
- /* function call for "complicated" and error cases */ \ |
- (c)=utf8_nextCharSafeBody((const uint8_t *)s, &(i), (int32_t)(length), c, -1); \ |
- } else { \ |
- (c)=U_SENTINEL; \ |
- } \ |
- } \ |
-} |
- |
-/** |
- * Append a code point to a string, overwriting 1 to 4 bytes. |
- * The offset points to the current end of the string contents |
- * and is advanced (post-increment). |
- * "Unsafe" macro, assumes a valid code point and sufficient space in the string. |
- * Otherwise, the result is undefined. |
- * |
- * @param s const uint8_t * string buffer |
- * @param i string offset |
- * @param c code point to append |
- * @see U8_APPEND |
- * @stable ICU 2.4 |
- */ |
-#define U8_APPEND_UNSAFE(s, i, c) { \ |
- if((uint32_t)(c)<=0x7f) { \ |
- (s)[(i)++]=(uint8_t)(c); \ |
- } else { \ |
- if((uint32_t)(c)<=0x7ff) { \ |
- (s)[(i)++]=(uint8_t)(((c)>>6)|0xc0); \ |
- } else { \ |
- if((uint32_t)(c)<=0xffff) { \ |
- (s)[(i)++]=(uint8_t)(((c)>>12)|0xe0); \ |
- } else { \ |
- (s)[(i)++]=(uint8_t)(((c)>>18)|0xf0); \ |
- (s)[(i)++]=(uint8_t)((((c)>>12)&0x3f)|0x80); \ |
- } \ |
- (s)[(i)++]=(uint8_t)((((c)>>6)&0x3f)|0x80); \ |
- } \ |
- (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80); \ |
- } \ |
-} |
- |
-/** |
- * Append a code point to a string, overwriting 1 to 4 bytes. |
- * The offset points to the current end of the string contents |
- * and is advanced (post-increment). |
- * "Safe" macro, checks for a valid code point. |
- * If a non-ASCII code point is written, checks for sufficient space in the string. |
- * If the code point is not valid or trail bytes do not fit, |
- * then isError is set to TRUE. |
- * |
- * @param s const uint8_t * string buffer |
- * @param i string offset, must be i<capacity |
- * @param capacity size of the string buffer |
- * @param c code point to append |
- * @param isError output UBool set to TRUE if an error occurs, otherwise not modified |
- * @see U8_APPEND_UNSAFE |
- * @stable ICU 2.4 |
- */ |
-#define U8_APPEND(s, i, capacity, c, isError) { \ |
- if((uint32_t)(c)<=0x7f) { \ |
- (s)[(i)++]=(uint8_t)(c); \ |
- } else if((uint32_t)(c)<=0x7ff && (i)+1<(capacity)) { \ |
- (s)[(i)++]=(uint8_t)(((c)>>6)|0xc0); \ |
- (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80); \ |
- } else if((uint32_t)(c)<=0xd7ff && (i)+2<(capacity)) { \ |
- (s)[(i)++]=(uint8_t)(((c)>>12)|0xe0); \ |
- (s)[(i)++]=(uint8_t)((((c)>>6)&0x3f)|0x80); \ |
- (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80); \ |
- } else { \ |
- (i)=utf8_appendCharSafeBody(s, (int32_t)(i), (int32_t)(capacity), c, &(isError)); \ |
- } \ |
-} |
- |
-/** |
- * Advance the string offset from one code point boundary to the next. |
- * (Post-incrementing iteration.) |
- * "Unsafe" macro, assumes well-formed UTF-8. |
- * |
- * @param s const uint8_t * string |
- * @param i string offset |
- * @see U8_FWD_1 |
- * @stable ICU 2.4 |
- */ |
-#define U8_FWD_1_UNSAFE(s, i) { \ |
- (i)+=1+U8_COUNT_TRAIL_BYTES((s)[i]); \ |
-} |
- |
-/** |
- * Advance the string offset from one code point boundary to the next. |
- * (Post-incrementing iteration.) |
- * "Safe" macro, checks for illegal sequences and for string boundaries. |
- * |
- * @param s const uint8_t * string |
- * @param i string offset, must be i<length |
- * @param length string length |
- * @see U8_FWD_1_UNSAFE |
- * @stable ICU 2.4 |
- */ |
-#define U8_FWD_1(s, i, length) { \ |
- uint8_t __b=(uint8_t)(s)[(i)++]; \ |
- if(U8_IS_LEAD(__b)) { \ |
- uint8_t __count=U8_COUNT_TRAIL_BYTES(__b); \ |
- if((i)+__count>(length)) { \ |
- __count=(uint8_t)((length)-(i)); \ |
- } \ |
- while(__count>0 && U8_IS_TRAIL((s)[i])) { \ |
- ++(i); \ |
- --__count; \ |
- } \ |
- } \ |
-} |
- |
-/** |
- * Advance the string offset from one code point boundary to the n-th next one, |
- * i.e., move forward by n code points. |
- * (Post-incrementing iteration.) |
- * "Unsafe" macro, assumes well-formed UTF-8. |
- * |
- * @param s const uint8_t * string |
- * @param i string offset |
- * @param n number of code points to skip |
- * @see U8_FWD_N |
- * @stable ICU 2.4 |
- */ |
-#define U8_FWD_N_UNSAFE(s, i, n) { \ |
- int32_t __N=(n); \ |
- while(__N>0) { \ |
- U8_FWD_1_UNSAFE(s, i); \ |
- --__N; \ |
- } \ |
-} |
- |
-/** |
- * Advance the string offset from one code point boundary to the n-th next one, |
- * i.e., move forward by n code points. |
- * (Post-incrementing iteration.) |
- * "Safe" macro, checks for illegal sequences and for string boundaries. |
- * |
- * @param s const uint8_t * string |
- * @param i string offset, must be i<length |
- * @param length string length |
- * @param n number of code points to skip |
- * @see U8_FWD_N_UNSAFE |
- * @stable ICU 2.4 |
- */ |
-#define U8_FWD_N(s, i, length, n) { \ |
- int32_t __N=(n); \ |
- while(__N>0 && (i)<(length)) { \ |
- U8_FWD_1(s, i, length); \ |
- --__N; \ |
- } \ |
-} |
- |
-/** |
- * Adjust a random-access offset to a code point boundary |
- * at the start of a code point. |
- * If the offset points to a UTF-8 trail byte, |
- * then the offset is moved backward to the corresponding lead byte. |
- * Otherwise, it is not modified. |
- * "Unsafe" macro, assumes well-formed UTF-8. |
- * |
- * @param s const uint8_t * string |
- * @param i string offset |
- * @see U8_SET_CP_START |
- * @stable ICU 2.4 |
- */ |
-#define U8_SET_CP_START_UNSAFE(s, i) { \ |
- while(U8_IS_TRAIL((s)[i])) { --(i); } \ |
-} |
- |
-/** |
- * Adjust a random-access offset to a code point boundary |
- * at the start of a code point. |
- * If the offset points to a UTF-8 trail byte, |
- * then the offset is moved backward to the corresponding lead byte. |
- * Otherwise, it is not modified. |
- * "Safe" macro, checks for illegal sequences and for string boundaries. |
- * |
- * @param s const uint8_t * string |
- * @param start starting string offset (usually 0) |
- * @param i string offset, must be start<=i |
- * @see U8_SET_CP_START_UNSAFE |
- * @stable ICU 2.4 |
- */ |
-#define U8_SET_CP_START(s, start, i) { \ |
- if(U8_IS_TRAIL((s)[(i)])) { \ |
- (i)=utf8_back1SafeBody(s, start, (int32_t)(i)); \ |
- } \ |
-} |
- |
-/* definitions with backward iteration -------------------------------------- */ |
- |
-/** |
- * Move the string offset from one code point boundary to the previous one |
- * and get the code point between them. |
- * (Pre-decrementing backward iteration.) |
- * "Unsafe" macro, assumes well-formed UTF-8. |
- * |
- * The input offset may be the same as the string length. |
- * If the offset is behind a multi-byte sequence, then the macro will read |
- * the whole sequence. |
- * If the offset is behind a lead byte, then that itself |
- * will be returned as the code point. |
- * The result is undefined if the offset is behind an illegal UTF-8 sequence. |
- * |
- * @param s const uint8_t * string |
- * @param i string offset |
- * @param c output UChar32 variable |
- * @see U8_PREV |
- * @stable ICU 2.4 |
- */ |
-#define U8_PREV_UNSAFE(s, i, c) { \ |
- (c)=(uint8_t)(s)[--(i)]; \ |
- if(U8_IS_TRAIL(c)) { \ |
- uint8_t __b, __count=1, __shift=6; \ |
-\ |
- /* c is a trail byte */ \ |
- (c)&=0x3f; \ |
- for(;;) { \ |
- __b=(uint8_t)(s)[--(i)]; \ |
- if(__b>=0xc0) { \ |
- U8_MASK_LEAD_BYTE(__b, __count); \ |
- (c)|=(UChar32)__b<<__shift; \ |
- break; \ |
- } else { \ |
- (c)|=(UChar32)(__b&0x3f)<<__shift; \ |
- ++__count; \ |
- __shift+=6; \ |
- } \ |
- } \ |
- } \ |
-} |
- |
-/** |
- * Move the string offset from one code point boundary to the previous one |
- * and get the code point between them. |
- * (Pre-decrementing backward iteration.) |
- * "Safe" macro, checks for illegal sequences and for string boundaries. |
- * |
- * The input offset may be the same as the string length. |
- * If the offset is behind a multi-byte sequence, then the macro will read |
- * the whole sequence. |
- * If the offset is behind a lead byte, then that itself |
- * will be returned as the code point. |
- * If the offset is behind an illegal UTF-8 sequence, then c is set to a negative value. |
- * |
- * @param s const uint8_t * string |
- * @param start starting string offset (usually 0) |
- * @param i string offset, must be start<i |
- * @param c output UChar32 variable, set to <0 in case of an error |
- * @see U8_PREV_UNSAFE |
- * @stable ICU 2.4 |
- */ |
-#define U8_PREV(s, start, i, c) { \ |
- (c)=(uint8_t)(s)[--(i)]; \ |
- if((c)>=0x80) { \ |
- if((c)<=0xbf) { \ |
- (c)=utf8_prevCharSafeBody((const uint8_t *)s, start, &(i), c, -1); \ |
- } else { \ |
- (c)=U_SENTINEL; \ |
- } \ |
- } \ |
-} |
- |
-/** |
- * Move the string offset from one code point boundary to the previous one. |
- * (Pre-decrementing backward iteration.) |
- * The input offset may be the same as the string length. |
- * "Unsafe" macro, assumes well-formed UTF-8. |
- * |
- * @param s const uint8_t * string |
- * @param i string offset |
- * @see U8_BACK_1 |
- * @stable ICU 2.4 |
- */ |
-#define U8_BACK_1_UNSAFE(s, i) { \ |
- while(U8_IS_TRAIL((s)[--(i)])) {} \ |
-} |
- |
-/** |
- * Move the string offset from one code point boundary to the previous one. |
- * (Pre-decrementing backward iteration.) |
- * The input offset may be the same as the string length. |
- * "Safe" macro, checks for illegal sequences and for string boundaries. |
- * |
- * @param s const uint8_t * string |
- * @param start starting string offset (usually 0) |
- * @param i string offset, must be start<i |
- * @see U8_BACK_1_UNSAFE |
- * @stable ICU 2.4 |
- */ |
-#define U8_BACK_1(s, start, i) { \ |
- if(U8_IS_TRAIL((s)[--(i)])) { \ |
- (i)=utf8_back1SafeBody(s, start, (int32_t)(i)); \ |
- } \ |
-} |
- |
-/** |
- * Move the string offset from one code point boundary to the n-th one before it, |
- * i.e., move backward by n code points. |
- * (Pre-decrementing backward iteration.) |
- * The input offset may be the same as the string length. |
- * "Unsafe" macro, assumes well-formed UTF-8. |
- * |
- * @param s const uint8_t * string |
- * @param i string offset |
- * @param n number of code points to skip |
- * @see U8_BACK_N |
- * @stable ICU 2.4 |
- */ |
-#define U8_BACK_N_UNSAFE(s, i, n) { \ |
- int32_t __N=(n); \ |
- while(__N>0) { \ |
- U8_BACK_1_UNSAFE(s, i); \ |
- --__N; \ |
- } \ |
-} |
- |
-/** |
- * Move the string offset from one code point boundary to the n-th one before it, |
- * i.e., move backward by n code points. |
- * (Pre-decrementing backward iteration.) |
- * The input offset may be the same as the string length. |
- * "Safe" macro, checks for illegal sequences and for string boundaries. |
- * |
- * @param s const uint8_t * string |
- * @param start index of the start of the string |
- * @param i string offset, must be start<i |
- * @param n number of code points to skip |
- * @see U8_BACK_N_UNSAFE |
- * @stable ICU 2.4 |
- */ |
-#define U8_BACK_N(s, start, i, n) { \ |
- int32_t __N=(n); \ |
- while(__N>0 && (i)>(start)) { \ |
- U8_BACK_1(s, start, i); \ |
- --__N; \ |
- } \ |
-} |
- |
-/** |
- * Adjust a random-access offset to a code point boundary after a code point. |
- * If the offset is behind a partial multi-byte sequence, |
- * then the offset is incremented to behind the whole sequence. |
- * Otherwise, it is not modified. |
- * The input offset may be the same as the string length. |
- * "Unsafe" macro, assumes well-formed UTF-8. |
- * |
- * @param s const uint8_t * string |
- * @param i string offset |
- * @see U8_SET_CP_LIMIT |
- * @stable ICU 2.4 |
- */ |
-#define U8_SET_CP_LIMIT_UNSAFE(s, i) { \ |
- U8_BACK_1_UNSAFE(s, i); \ |
- U8_FWD_1_UNSAFE(s, i); \ |
-} |
- |
-/** |
- * Adjust a random-access offset to a code point boundary after a code point. |
- * If the offset is behind a partial multi-byte sequence, |
- * then the offset is incremented to behind the whole sequence. |
- * Otherwise, it is not modified. |
- * The input offset may be the same as the string length. |
- * "Safe" macro, checks for illegal sequences and for string boundaries. |
- * |
- * @param s const uint8_t * string |
- * @param start starting string offset (usually 0) |
- * @param i string offset, must be start<=i<=length |
- * @param length string length |
- * @see U8_SET_CP_LIMIT_UNSAFE |
- * @stable ICU 2.4 |
- */ |
-#define U8_SET_CP_LIMIT(s, start, i, length) { \ |
- if((start)<(i) && (i)<(length)) { \ |
- U8_BACK_1(s, start, i); \ |
- U8_FWD_1(s, i, length); \ |
- } \ |
-} |
- |
-#endif |