-/*
- * This code was written by Rich Felker in 2010; no copyright is claimed.
- * This code is in the public domain. Attribution is appreciated but
- * unnecessary.
- */
-
#include <stdlib.h>
-#include <inttypes.h>
#include <wchar.h>
#include <errno.h>
-
#include "internal.h"
size_t mbrtowc(wchar_t *restrict wc, const char *restrict src, size_t n, mbstate_t *restrict st)
unsigned c;
const unsigned char *s = (const void *)src;
const unsigned N = n;
+ wchar_t dummy;
if (!st) st = (void *)&internal_state;
c = *(unsigned *)st;
if (!s) {
- s = (void *)"";
- wc = (void *)&wc;
- n = 1;
- } else if (!wc) wc = (void *)&wc;
+ if (c) goto ilseq;
+ return 0;
+ } else if (!wc) wc = &dummy;
if (!n) return -2;
if (!c) {
if (*s < 0x80) return !!(*wc = *s);
+ if (MB_CUR_MAX==1) return (*wc = CODEUNIT(*s)), 1;
if (*s-SA > SB-SA) goto ilseq;
c = bittab[*s++-SA]; n--;
}
*(unsigned *)st = c;
return -2;
ilseq:
- *(unsigned *)st = FAILSTATE;
+ *(unsigned *)st = 0;
errno = EILSEQ;
return -1;
}