newlib-cygwin/newlib/libc/stdlib/btowc.c

33 lines
518 B
C

#include <wchar.h>
#include <stdlib.h>
#include <stdio.h>
#include <reent.h>
#include <string.h>
#include "local.h"
wint_t
btowc (int c)
{
mbstate_t mbs;
int retval = 0;
wchar_t pwc;
unsigned char b;
if (c == EOF)
return WEOF;
b = (unsigned char)c;
/* Put mbs in initial state. */
memset (&mbs, '\0', sizeof (mbs));
_REENT_CHECK_MISC(_REENT);
retval = __mbtowc (_REENT, &pwc, &b, 1, __locale_charset (), &mbs);
if (retval != 0 && retval != 1)
return WEOF;
return (wint_t)pwc;
}