diff options
Diffstat (limited to 'generic/tclUtf.c')
| -rw-r--r-- | generic/tclUtf.c | 49 |
1 files changed, 14 insertions, 35 deletions
diff --git a/generic/tclUtf.c b/generic/tclUtf.c index 447a5c9..9e49e87 100644 --- a/generic/tclUtf.c +++ b/generic/tclUtf.c @@ -64,20 +64,12 @@ static const unsigned char totalBytes[256] = { 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, 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, 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, -/* Tcl_UtfCharComplete() might point to 2nd byte of valid 4-byte sequence */ - 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, - 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, -/* End of "continuation byte section" */ + 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, + 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, 2,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, - 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, -#if TCL_UTF_MAX > 3 - 4,4,4,4,4, -#else - 1,1,1,1,1, -#endif - 1,1,1,1,1,1,1,1,1,1,1 + 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,1,1,1,1,1,1,1,1,1,1,1 }; - + static const unsigned char complete[256] = { 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, 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, @@ -88,17 +80,9 @@ static const unsigned char complete[256] = { 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, /* End of "continuation byte section" */ 2,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, - 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, -#if TCL_UTF_MAX > 3 - 4,4,4,4,4, -#else - /* Tcl_UtfToUniChar() accesses src[1] and src[2] to check whether - * the UTF-8 sequence is valid, so we cannot use 1 here. */ - 3,3,3,3,3, -#endif - 1,1,1,1,1,1,1,1,1,1,1 + 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,1,1,1,1,1,1,1,1,1,1,1 }; - + /* * Functions used only in this module. */ @@ -697,7 +681,7 @@ Tcl_UtfToUniCharDString( p += TclUtfToUCS4(p, &ch); *w++ = ch; } - while ((p < endPtr) && TclUCS4Complete(p, endPtr-p)) { + while ((p < endPtr) && Tcl_UtfCharComplete(p, endPtr-p)) { p += TclUtfToUCS4(p, &ch); *w++ = ch; } @@ -755,7 +739,7 @@ Tcl_UtfToChar16DString( *w++ = ch; } while (p < endPtr) { - if (TclChar16Complete(p, endPtr-p)) { + if (Tcl_UtfCharComplete(p, endPtr-p)) { p += Tcl_UtfToChar16(p, &ch); *w++ = ch; } else { @@ -836,7 +820,7 @@ Tcl_NumUtfChars( /* Pointer to the end of string. Never read endPtr[0] */ const char *endPtr = src + length; /* Pointer to last byte where optimization still can be used */ - const char *optPtr = endPtr - TCL_UTF_MAX; + const char *optPtr = endPtr - 4; /* * Optimize away the call in this loop. Justified because... @@ -1071,7 +1055,7 @@ Tcl_UtfPrev( * it (the fallback) is correct. */ - || (trailBytesSeen >= complete[byte])) { + || (trailBytesSeen >= totalBytes[byte])) { /* * That is, (1 + trailBytesSeen > needed). * We've examined more bytes than needed to complete @@ -1112,19 +1096,14 @@ Tcl_UtfPrev( /* Continue the search backwards... */ look--; - } while (trailBytesSeen < TCL_UTF_MAX); + } while (trailBytesSeen < 4); /* - * We've seen TCL_UTF_MAX trail bytes, so we know there will not be a + * We've seen 4 trail bytes, so we know there will not be a * properly formed byte sequence to find, and we can stop looking, - * accepting the fallback (for TCL_UTF_MAX > 3) or just go back as - * far as we can. + * accepting the fallback. */ -#if TCL_UTF_MAX > 3 return fallback; -#else - return src - TCL_UTF_MAX; -#endif } /* @@ -1757,7 +1736,7 @@ Tcl_UniCharToLower( /* Clear away extension bits, if any */ return ch & 0x1FFFFF; } - + /* *---------------------------------------------------------------------- * |