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

67 lines
1.0 KiB
C

#include <reent.h>
#include <wchar.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
size_t
_DEFUN (_mbsrtowcs_r, (r, dst, src, n, ps),
struct _reent *r _AND
wchar_t *dst _AND
const char **src _AND
size_t n _AND
mbstate_t *ps)
{
wchar_t *ptr = dst;
size_t max = n;
int bytes;
#ifdef MB_CAPABLE
if (ps == NULL)
{
_REENT_CHECK_MISC(r);
ps = &(_REENT_MBSRTOWCS_STATE(r));
}
#endif
while (n > 0)
{
bytes = _mbtowc_r (r, ptr, *src, MB_CUR_MAX, ps);
if (bytes > 0)
{
*src += bytes;
++ptr;
--n;
}
else if (bytes == -2)
{
*src += MB_CUR_MAX;
}
else if (bytes == 0)
{
*src = NULL;
return (size_t)(ptr - dst);
}
else
{
ps->__count = 0;
r->_errno = EILSEQ;
return (size_t)-1;
}
}
return (size_t)max;
}
#ifndef _REENT_ONLY
size_t
_DEFUN (mbsrtowcs, (dst, src, len, ps),
wchar_t *dst _AND
const char **src _AND
size_t len _AND
mbstate_t *ps)
{
return _mbsrtowcs_r (_REENT, dst, src, len, ps);
}
#endif /* !_REENT_ONLY */