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diff --git a/Build/source/libs/icu/icu-xetex/common/utf_impl.c b/Build/source/libs/icu/icu-xetex/common/utf_impl.c
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+/*
+******************************************************************************
+*
+* Copyright (C) 1999-2006, International Business Machines
+* Corporation and others. All Rights Reserved.
+*
+******************************************************************************
+* file name: utf_impl.c
+* encoding: US-ASCII
+* tab size: 8 (not used)
+* indentation:4
+*
+* created on: 1999sep13
+* created by: Markus W. Scherer
+*
+* This file provides implementation functions for macros in the utfXX.h
+* that would otherwise be too long as macros.
+*/
+
+/* set import/export definitions */
+#ifndef U_UTF8_IMPL
+# define U_UTF8_IMPL
+#endif
+
+#include "unicode/utypes.h"
+
+/*
+ * This table could be replaced on many machines by
+ * a few lines of assembler code using an
+ * "index of first 0-bit from msb" instruction and
+ * one or two more integer instructions.
+ *
+ * For example, on an i386, do something like
+ * - MOV AL, leadByte
+ * - NOT AL (8-bit, leave b15..b8==0..0, reverse only b7..b0)
+ * - MOV AH, 0
+ * - BSR BX, AX (16-bit)
+ * - MOV AX, 6 (result)
+ * - JZ finish (ZF==1 if leadByte==0xff)
+ * - SUB AX, BX (result)
+ * -finish:
+ * (BSR: Bit Scan Reverse, scans for a 1-bit, starting from the MSB)
+ *
+ * In Unicode, all UTF-8 byte sequences with more than 4 bytes are illegal;
+ * lead bytes above 0xf4 are illegal.
+ * We keep them in this table for skipping long ISO 10646-UTF-8 sequences.
+ */
+U_EXPORT const uint8_t
+utf8_countTrailBytes[256]={
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 3, 3, 3, 3, 3,
+ 3, 3, 3, /* illegal in Unicode */
+ 4, 4, 4, 4, /* illegal in Unicode */
+ 5, 5, /* illegal in Unicode */
+ 0, 0 /* illegal bytes 0xfe and 0xff */
+};
+
+static const UChar32
+utf8_minLegal[4]={ 0, 0x80, 0x800, 0x10000 };
+
+static const UChar32
+utf8_errorValue[6]={
+ UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_2, UTF_ERROR_VALUE, 0x10ffff,
+ 0x3ffffff, 0x7fffffff
+};
+
+/*
+ * Handle the non-inline part of the U8_NEXT() macro and its obsolete sibling
+ * UTF8_NEXT_CHAR_SAFE().
+ *
+ * The "strict" parameter controls the error behavior:
+ * <0 "Safe" behavior of U8_NEXT(): All illegal byte sequences yield a negative
+ * code point result.
+ * 0 Obsolete "safe" behavior of UTF8_NEXT_CHAR_SAFE(..., FALSE):
+ * All illegal byte sequences yield a positive code point such that this
+ * result code point would be encoded with the same number of bytes as
+ * the illegal sequence.
+ * >0 Obsolete "strict" behavior of UTF8_NEXT_CHAR_SAFE(..., TRUE):
+ * Same as the obsolete "safe" behavior, but non-characters are also treated
+ * like illegal sequences.
+ *
+ * The special negative (<0) value -2 is used for lenient treatment of surrogate
+ * code points as legal. Some implementations use this for roundtripping of
+ * Unicode 16-bit strings that are not well-formed UTF-16, that is, they
+ * contain unpaired surrogates.
+ *
+ * Note that a UBool is the same as an int8_t.
+ */
+U_CAPI UChar32 U_EXPORT2
+utf8_nextCharSafeBody(const uint8_t *s, int32_t *pi, int32_t length, UChar32 c, UBool strict) {
+ int32_t i=*pi;
+ uint8_t count=UTF8_COUNT_TRAIL_BYTES(c);
+ if((i)+count<=(length)) {
+ uint8_t trail, illegal=0;
+
+ UTF8_MASK_LEAD_BYTE((c), count);
+ /* count==0 for illegally leading trail bytes and the illegal bytes 0xfe and 0xff */
+ switch(count) {
+ /* each branch falls through to the next one */
+ case 5:
+ case 4:
+ /* count>=4 is always illegal: no more than 3 trail bytes in Unicode's UTF-8 */
+ illegal=1;
+ break;
+ case 3:
+ trail=s[(i)++];
+ (c)=((c)<<6)|(trail&0x3f);
+ if(c<0x110) {
+ illegal|=(trail&0xc0)^0x80;
+ } else {
+ /* code point>0x10ffff, outside Unicode */
+ illegal=1;
+ break;
+ }
+ case 2:
+ trail=s[(i)++];
+ (c)=((c)<<6)|(trail&0x3f);
+ illegal|=(trail&0xc0)^0x80;
+ case 1:
+ trail=s[(i)++];
+ (c)=((c)<<6)|(trail&0x3f);
+ illegal|=(trail&0xc0)^0x80;
+ break;
+ case 0:
+ if(strict>=0) {
+ return UTF8_ERROR_VALUE_1;
+ } else {
+ return U_SENTINEL;
+ }
+ /* no default branch to optimize switch() - all values are covered */
+ }
+
+ /*
+ * All the error handling should return a value
+ * that needs count bytes so that UTF8_GET_CHAR_SAFE() works right.
+ *
+ * Starting with Unicode 3.0.1, non-shortest forms are illegal.
+ * Starting with Unicode 3.2, surrogate code points must not be
+ * encoded in UTF-8, and there are no irregular sequences any more.
+ *
+ * U8_ macros (new in ICU 2.4) return negative values for error conditions.
+ */
+
+ /* correct sequence - all trail bytes have (b7..b6)==(10)? */
+ /* illegal is also set if count>=4 */
+ if(illegal || (c)<utf8_minLegal[count] || (UTF_IS_SURROGATE(c) && strict!=-2)) {
+ /* error handling */
+ uint8_t errorCount=count;
+ /* don't go beyond this sequence */
+ i=*pi;
+ while(count>0 && UTF8_IS_TRAIL(s[i])) {
+ ++(i);
+ --count;
+ }
+ if(strict>=0) {
+ c=utf8_errorValue[errorCount-count];
+ } else {
+ c=U_SENTINEL;
+ }
+ } else if((strict)>0 && UTF_IS_UNICODE_NONCHAR(c)) {
+ /* strict: forbid non-characters like U+fffe */
+ c=utf8_errorValue[count];
+ }
+ } else /* too few bytes left */ {
+ /* error handling */
+ int32_t i0=i;
+ /* don't just set (i)=(length) in case there is an illegal sequence */
+ while((i)<(length) && UTF8_IS_TRAIL(s[i])) {
+ ++(i);
+ }
+ if(strict>=0) {
+ c=utf8_errorValue[i-i0];
+ } else {
+ c=U_SENTINEL;
+ }
+ }
+ *pi=i;
+ return c;
+}
+
+U_CAPI int32_t U_EXPORT2
+utf8_appendCharSafeBody(uint8_t *s, int32_t i, int32_t length, UChar32 c, UBool *pIsError) {
+ if((uint32_t)(c)<=0x7ff) {
+ if((i)+1<(length)) {
+ (s)[(i)++]=(uint8_t)(((c)>>6)|0xc0);
+ (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80);
+ return i;
+ }
+ } else if((uint32_t)(c)<=0xffff) {
+ /* Starting with Unicode 3.2, surrogate code points must not be encoded in UTF-8. */
+ if((i)+2<(length) && !U_IS_SURROGATE(c)) {
+ (s)[(i)++]=(uint8_t)(((c)>>12)|0xe0);
+ (s)[(i)++]=(uint8_t)((((c)>>6)&0x3f)|0x80);
+ (s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80);
+ return i;
+ }
+ } else if((uint32_t)(c)<=0x10ffff) {
+ if((i)+3<(length)) {
+ (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);
+ return i;
+ }
+ }
+ /* c>0x10ffff or not enough space, write an error value */
+ if(pIsError!=NULL) {
+ *pIsError=TRUE;
+ } else {
+ length-=i;
+ if(length>0) {
+ int32_t offset;
+ if(length>3) {
+ length=3;
+ }
+ s+=i;
+ offset=0;
+ c=utf8_errorValue[length-1];
+ UTF8_APPEND_CHAR_UNSAFE(s, offset, c);
+ i=i+offset;
+ }
+ }
+ return i;
+}
+
+U_CAPI UChar32 U_EXPORT2
+utf8_prevCharSafeBody(const uint8_t *s, int32_t start, int32_t *pi, UChar32 c, UBool strict) {
+ int32_t i=*pi;
+ uint8_t b, count=1, shift=6;
+
+ /* extract value bits from the last trail byte */
+ c&=0x3f;
+
+ for(;;) {
+ if(i<=start) {
+ /* no lead byte at all */
+ if(strict>=0) {
+ return UTF8_ERROR_VALUE_1;
+ } else {
+ return U_SENTINEL;
+ }
+ /*break;*/
+ }
+
+ /* read another previous byte */
+ b=s[--i];
+ if((uint8_t)(b-0x80)<0x7e) { /* 0x80<=b<0xfe */
+ if(b&0x40) {
+ /* lead byte, this will always end the loop */
+ uint8_t shouldCount=UTF8_COUNT_TRAIL_BYTES(b);
+
+ if(count==shouldCount) {
+ /* set the new position */
+ *pi=i;
+ UTF8_MASK_LEAD_BYTE(b, count);
+ c|=(UChar32)b<<shift;
+ if(count>=4 || c>0x10ffff || c<utf8_minLegal[count] || (UTF_IS_SURROGATE(c) && strict!=-2) || (strict>0 && UTF_IS_UNICODE_NONCHAR(c))) {
+ /* illegal sequence or (strict and non-character) */
+ if(count>=4) {
+ count=3;
+ }
+ if(strict>=0) {
+ c=utf8_errorValue[count];
+ } else {
+ c=U_SENTINEL;
+ }
+ } else {
+ /* exit with correct c */
+ }
+ } else {
+ /* the lead byte does not match the number of trail bytes */
+ /* only set the position to the lead byte if it would
+ include the trail byte that we started with */
+ if(count<shouldCount) {
+ *pi=i;
+ if(strict>=0) {
+ c=utf8_errorValue[count];
+ } else {
+ c=U_SENTINEL;
+ }
+ } else {
+ if(strict>=0) {
+ c=UTF8_ERROR_VALUE_1;
+ } else {
+ c=U_SENTINEL;
+ }
+ }
+ }
+ break;
+ } else if(count<5) {
+ /* trail byte */
+ c|=(UChar32)(b&0x3f)<<shift;
+ ++count;
+ shift+=6;
+ } else {
+ /* more than 5 trail bytes is illegal */
+ if(strict>=0) {
+ c=UTF8_ERROR_VALUE_1;
+ } else {
+ c=U_SENTINEL;
+ }
+ break;
+ }
+ } else {
+ /* single-byte character precedes trailing bytes */
+ if(strict>=0) {
+ c=UTF8_ERROR_VALUE_1;
+ } else {
+ c=U_SENTINEL;
+ }
+ break;
+ }
+ }
+ return c;
+}
+
+U_CAPI int32_t U_EXPORT2
+utf8_back1SafeBody(const uint8_t *s, int32_t start, int32_t i) {
+ /* i had been decremented once before the function call */
+ int32_t I=i, Z;
+ uint8_t b;
+
+ /* read at most the 6 bytes s[Z] to s[i], inclusively */
+ if(I-5>start) {
+ Z=I-5;
+ } else {
+ Z=start;
+ }
+
+ /* return I if the sequence starting there is long enough to include i */
+ do {
+ b=s[I];
+ if((uint8_t)(b-0x80)>=0x7e) { /* not 0x80<=b<0xfe */
+ break;
+ } else if(b>=0xc0) {
+ if(UTF8_COUNT_TRAIL_BYTES(b)>=(i-I)) {
+ return I;
+ } else {
+ break;
+ }
+ }
+ } while(Z<=--I);
+
+ /* return i itself to be consistent with the FWD_1 macro */
+ return i;
+}