void clearerr
(
FILE * fp /* stream to clear EOF and ERROR flags for */
)
{
__sclearerr(fp);
}
void
clearerr(FILE *fp)
{
FLOCKFILE(fp);
__sclearerr(fp);
FUNLOCKFILE(fp);
}
wint_t
__ungetwc(wint_t wc, FILE *fp, locale_t locale)
{
struct wchar_io_data *wcio;
char buf[MB_LEN_MAX];
size_t len;
struct xlocale_ctype *l = XLOCALE_CTYPE(locale);
if (wc == WEOF)
return (WEOF);
_SET_ORIENTATION(fp, 1);
wcio = WCIO_GET(fp);
if (wcio == 0) {
errno = ENOMEM; /* XXX */
return (WEOF);
}
len = l->__wcrtomb(buf, wc, &wcio->wcio_mbstate_in);
if (len == (size_t)-1)
return (WEOF);
while (len--) {
if (__ungetc(buf[len], fp) == EOF)
return (WEOF);
}
__sclearerr(fp);
return wc;
}
void
rewind(FILE *fp)
{
_DIAGASSERT(fp != NULL);
FLOCKFILE(fp);
(void) fseek(fp, 0L, SEEK_SET);
__sclearerr(fp);
FUNLOCKFILE(fp);
}
wint_t
ungetwc(wint_t wc, FILE *fp)
{
struct wchar_io_data *wcio;
_DIAGASSERT(fp);
if (wc == WEOF)
return WEOF;
FLOCKFILE(fp);
_SET_ORIENTATION(fp, 1);
/*
* XXX since we have no way to transform a wchar string to
* a char string in reverse order, we can't use ungetc.
*/
/* XXX should we flush ungetc buffer? */
wcio = WCIO_GET(fp);
if (wcio == 0) {
FUNLOCKFILE(fp);
errno = ENOMEM; /* XXX */
return WEOF;
}
if (wcio->wcio_ungetwc_inbuf >= WCIO_UNGETWC_BUFSIZE) {
FUNLOCKFILE(fp);
return WEOF;
}
wcio->wcio_ungetwc_buf[wcio->wcio_ungetwc_inbuf++] = (wchar_t)wc;
__sclearerr(fp);
FUNLOCKFILE(fp);
return wc;
}
void clearerr_unlocked(FILE* fp) {
return __sclearerr(fp);
}
void
pd_clearerr_unlocked_p(FILEpd *fp)
{
__sclearerr(fp);
}
