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#include <reent.h>
#include <newlib.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;
const char *tmp_src;
size_t max;
size_t count = 0;
int bytes;
#ifdef _MB_CAPABLE
if (ps == NULL)
{
_REENT_CHECK_MISC(r);
ps = &(_REENT_MBSRTOWCS_STATE(r));
}
#endif
if (dst == NULL)
{
/* Ignore original n value and do not alter src pointer if the
dst pointer is NULL. */
n = (size_t)-1;
tmp_src = *src;
src = &tmp_src;
}
max = n;
while (n > 0)
{
bytes = _mbrtowc_r (r, ptr, *src, MB_CUR_MAX, ps);
if (bytes > 0)
{
*src += bytes;
++count;
ptr = (dst == NULL) ? NULL : ptr + 1;
--n;
}
else if (bytes == -2)
{
*src += MB_CUR_MAX;
}
else if (bytes == 0)
{
*src = NULL;
return count;
}
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 */
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