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cleanup multibyte stuff to remove ugly casts, sanitize the ptr align casts

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This commit is contained in:
Rich Felker 2011-02-13 23:08:18 -05:00
parent 2cdfb7ca26
commit f9d880d258
3 changed files with 27 additions and 27 deletions
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8
src/multibyte/internal.h
View File

@ -53,9 +53,9 @@ extern const uint32_t bittab[];
#define FAILSTATE R(0x80,0x80)
#ifdef I_FAILED_TO_RTFM_RFC3629
#define SA 0xc2
#define SB 0xfe
#define SA 0xc2u
#define SB 0xfeu
#else
#define SA 0xc2
#define SB 0xf5
#define SA 0xc2u
#define SB 0xf5u
#endif

8
src/multibyte/mbrtowc.c
View File

@ -15,7 +15,7 @@ size_t mbrtowc(wchar_t *wc, const char *src, size_t n, mbstate_t *st)
{
static unsigned internal_state;
unsigned c;
const unsigned char *s = src;
const unsigned char *s = (const void *)src;
const unsigned N = n;
if (!st) st = (void *)&internal_state;
@ -29,8 +29,8 @@ size_t mbrtowc(wchar_t *wc, const char *src, size_t n, mbstate_t *st)
if (!n) return -2;
if (!c) {
if ((unsigned)*s < 0x80) return !!(*wc = *s);
if ((unsigned)*s-SA > SB-SA) goto ilseq;
if (*s < 0x80) return !!(*wc = *s);
if (*s-SA > SB-SA) goto ilseq;
c = bittab[*s++-SA]; n--;
}
@ -44,7 +44,7 @@ loop:
return N-n;
}
if (n) {
if ((unsigned)*s-0x80 >= 0x40) goto ilseq;
if (*s-0x80u >= 0x40) goto ilseq;
goto loop;
}
}

38
src/multibyte/mbsrtowcs.c
View File

@ -14,7 +14,7 @@
size_t mbsrtowcs(wchar_t *ws, const char **src, size_t wn, mbstate_t *st)
{
unsigned c;
const unsigned char *s = *src;
const unsigned char *s = (const void *)*src;
const wchar_t *wsorig = ws;
if (!st) st = (void *)&c, c = 0;
@ -30,12 +30,12 @@ size_t mbsrtowcs(wchar_t *ws, const char **src, size_t wn, mbstate_t *st)
}
if (!ws) for (wn=0;;) {
if ((unsigned)*s-SA >= SB-SA) {
while (((unsigned)s&3) && (unsigned)*s-1<0x7f) s++, wn++;
if (*s-SA >= SB-SA) {
while (((uintptr_t)s&3) && *s-1u<0x7f) s++, wn++;
while (!(( *(uint32_t*)s | *(uint32_t*)s-0x01010101) & 0x80808080)) s+=4, wn+=4;
while ((unsigned)*s-1<0x7f) s++, wn++;
while (*s-1u<0x7f) s++, wn++;
if (!*s) return wn;
if ((unsigned)*s-SA >= SB-SA) goto ilseq2;
if (*s-SA >= SB-SA) goto ilseq2;
}
c = bittab[*s++-SA];
do {
@ -43,22 +43,22 @@ resume0:
if (OOB(c,*s)) goto ilseq2; s++;
c <<= 6; if (!(c&(1U<<31))) break;
#ifdef I_FAILED_TO_RTFM_RFC3629
if ((unsigned)*s++-0x80 >= 0x40) goto ilseq2;
if (*s++-0x80u >= 0x40) goto ilseq2;
c <<= 6; if (!(c&(1U<<31))) break;
if ((unsigned)*s++-0x80 >= 0x40) goto ilseq2;
if (*s++-0x80u >= 0x40) goto ilseq2;
c <<= 6; if (!(c&(1U<<31))) break;
#endif
if ((unsigned)*s++-0x80 >= 0x40) goto ilseq2;
if (*s++-0x80u >= 0x40) goto ilseq2;
c <<= 6; if (!(c&(1U<<31))) break;
if ((unsigned)*s++-0x80 >= 0x40) goto ilseq2;
if (*s++-0x80u >= 0x40) goto ilseq2;
} while (0);
wn++; c = 0;
}
while (wn) {
if ((unsigned)*s-SA >= SB-SA) {
if (*s-SA >= SB-SA) {
if (wn >= 7) {
while (((unsigned)s&3) && (unsigned)*s-1<0x7f) {
while (((uintptr_t)s&3) && *s-1u<0x7f) {
*ws++ = *s++;
wn--;
}
@ -70,7 +70,7 @@ resume0:
wn -= 4;
}
}
while (wn && (unsigned)*s-1<0x7f) {
while (wn && *s-1u<0x7f) {
*ws++ = *s++;
wn--;
}
@ -80,7 +80,7 @@ resume0:
*src = 0;
return ws-wsorig;
}
if ((unsigned)*s-SA >= SB-SA) goto ilseq;
if (*s-SA >= SB-SA) goto ilseq;
}
c = bittab[*s++-SA];
do {
@ -90,29 +90,29 @@ resume:
if (!(c&(1U<<31))) break;
#ifdef I_FAILED_TO_RTFM_RFC3629
if ((unsigned)*s-0x80 >= 0x40) goto ilseq;
if (*s-0x80u >= 0x40) goto ilseq;
c = (c<<6) | *s++-0x80;
if (!(c&(1U<<31))) break;
if ((unsigned)*s-0x80 >= 0x40) goto ilseq;
if (*s-0x80u >= 0x40) goto ilseq;
c = (c<<6) | *s++-0x80;
if (!(c&(1U<<31))) break;
#endif
if ((unsigned)*s-0x80 >= 0x40) goto ilseq;
if (*s-0x80u >= 0x40) goto ilseq;
c = (c<<6) | *s++-0x80;
if (!(c&(1U<<31))) break;
if ((unsigned)*s-0x80 >= 0x40) goto ilseq;
if (*s-0x80u >= 0x40) goto ilseq;
c = (c<<6) | *s++-0x80;
} while (0);
*ws++ = c; wn--; c = 0;
}
*src = s;
*src = (const void *)s;
return ws-wsorig;
ilseq:
*src = s;
*src = (const void *)s;
ilseq2:
/* enter permanently failing state */
*(unsigned *)st = FAILSTATE;