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+
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** initial index and returns the index of the next spacing character -OR-
** zero if such a character cannot be found. For the purposes of this
** algorithm, the NUL character is treated the same as a spacing character.
*/
static int comment_next_space(
const char *zLine, /* [in] The comment line being printed. */
int index, /* [in] The current character index being handled. */
int maxChars, /* [in] Optimization hint to abort before space found. */
int *sumWidth /* [out] Summated width of all characters to next space. */
){
int cchUTF8, utf32, wcwidth = 0;
int nextIndex = index;
for(;;){
char_info_utf8(&zLine[nextIndex],&cchUTF8,&utf32);
nextIndex += cchUTF8;
wcwidth += cli_wcwidth(utf32);
if( zLine[nextIndex]==0 || fossil_isspace(zLine[nextIndex]) ){
if( zLine[nextIndex]==0 || fossil_isspace(zLine[nextIndex]) ||
wcwidth>maxChars ){
*sumWidth = wcwidth;
return nextIndex;
}
}
return 0; /* NOT REACHED */
}
|
275
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+
+
+
+
+
-
+
|
int *pCchUTF8,
int *pUtf32
){
int i = 0; /* Counted bytes. */
int cchUTF8 = 1; /* Code units consumed. */
int maxUTF8 = 1; /* Expected sequence length. */
char c = z[i++];
if( (c&0x80)==0x00 ){ /* 7-bit ASCII character. */
*pCchUTF8 = 1;
*pUtf32 = (int)z[0];
return;
}
if( (c&0xe0)==0xc0 ) maxUTF8 = 2; /* UTF-8 lead byte 110vvvvv */
else if( (c&0xe0)==0xc0 ) maxUTF8 = 2; /* UTF-8 lead byte 110vvvvv */
else if( (c&0xf0)==0xe0 ) maxUTF8 = 3; /* UTF-8 lead byte 1110vvvv */
else if( (c&0xf8)==0xf0 ) maxUTF8 = 4; /* UTF-8 lead byte 11110vvv */
while( cchUTF8<maxUTF8 &&
(z[i]&0xc0)==0x80 ){ /* UTF-8 trail byte 10vvvvvv */
cchUTF8++;
i++;
}
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-
-
-
|
( (z[2] & 0x3f)<< 0 ) ;
break;
case 2:
*pUtf32 =
( (z[0] & 0x1f)<< 6 ) |
( (z[1] & 0x3f)<< 0 ) ;
break;
case 1:
*pUtf32 = (int)z[0];
break;
|
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|
-
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+
|
}
if( c=='\n' ){
lineCnt++;
charCnt = 0;
useChars = 0;
}else if( c=='\t' ){
int sumWidth;
int nextIndex = comment_next_space(zLine, index, &sumWidth);
int nextIndex = comment_next_space(zLine, index, maxChars, &sumWidth);
if( nextIndex<=0 || sumWidth>maxChars ){
break;
}
charCnt++;
useChars = COMMENT_TAB_WIDTH;
if( maxChars<useChars ){
zBuf[iBuf++] = ' ';
break;
}
}else if( wordBreak && fossil_isspace(c) ){
int sumWidth;
int nextIndex = comment_next_space(zLine, index, &sumWidth);
int nextIndex = comment_next_space(zLine, index, maxChars, &sumWidth);
if( nextIndex<=0 || sumWidth>=maxChars ){
break;
}
charCnt++;
}else{
charCnt++;
}
|