This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>.
As a special exception, if you link the code in this file with
files compiled with a GNU compiler to produce an executable,
that does not cause the resulting executable to be covered by
the GNU Lesser General Public License. This exception does not
however invalidate any other reasons why the executable file
might be covered by the GNU Lesser General Public License.
This exception applies to code released by its copyright holders
in files containing the exception. */
#include "libioP.h"
#include "strfile.h"
static wint_t _IO_wstrn_overflow (_IO_FILE *fp, wint_t c) __THROW;
static wint_t
_IO_wstrn_overflow (fp, c)
_IO_FILE *fp;
wint_t c;
{
filled. But since we must return the number of characters which
would have been written in total we must provide a buffer for
further use. We can do this by writing on and on in the overflow
buffer in the _IO_wstrnfile structure. */
_IO_wstrnfile *snf = (_IO_wstrnfile *) fp;
if (fp->_wide_data->_IO_buf_base != snf->overflow_buf)
{
_IO_wsetb (fp, snf->overflow_buf,
snf->overflow_buf + (sizeof (snf->overflow_buf)
/ sizeof (wchar_t)), 0);
fp->_wide_data->_IO_write_base = snf->overflow_buf;
fp->_wide_data->_IO_read_base = snf->overflow_buf;
fp->_wide_data->_IO_read_ptr = snf->overflow_buf;
fp->_wide_data->_IO_read_end = (snf->overflow_buf
+ (sizeof (snf->overflow_buf)
/ sizeof (wchar_t)));
}
fp->_wide_data->_IO_write_ptr = snf->overflow_buf;
fp->_wide_data->_IO_write_end = snf->overflow_buf;
which do not fit in the buffer we simply ignore it. */
return c;
}
const struct _IO_jump_t _IO_wstrn_jumps attribute_hidden =
{
JUMP_INIT_DUMMY,
JUMP_INIT(finish, _IO_wstr_finish),
JUMP_INIT(overflow, (_IO_overflow_t) _IO_wstrn_overflow),
JUMP_INIT(underflow, (_IO_underflow_t) _IO_wstr_underflow),
JUMP_INIT(uflow, (_IO_underflow_t) _IO_wdefault_uflow),
JUMP_INIT(pbackfail, (_IO_pbackfail_t) _IO_wstr_pbackfail),
JUMP_INIT(xsputn, _IO_wdefault_xsputn),
JUMP_INIT(xsgetn, _IO_wdefault_xsgetn),
JUMP_INIT(seekoff, _IO_wstr_seekoff),
JUMP_INIT(seekpos, _IO_default_seekpos),
JUMP_INIT(setbuf, _IO_default_setbuf),
JUMP_INIT(sync, _IO_default_sync),
JUMP_INIT(doallocate, _IO_wdefault_doallocate),
JUMP_INIT(read, _IO_default_read),
JUMP_INIT(write, _IO_default_write),
JUMP_INIT(seek, _IO_default_seek),
JUMP_INIT(close, _IO_default_close),
JUMP_INIT(stat, _IO_default_stat),
JUMP_INIT(showmanyc, _IO_default_showmanyc),
JUMP_INIT(imbue, _IO_default_imbue)
};
int
_IO_vswprintf (string, maxlen, format, args)
wchar_t *string;
_IO_size_t maxlen;
const wchar_t *format;
_IO_va_list args;
{
_IO_wstrnfile sf;
int ret;
struct _IO_wide_data wd;
#ifdef _IO_MTSAFE_IO
sf.f._sbf._f._lock = NULL;
#endif
if (maxlen == 0)
length of zero always makes the function fail. */
return -1;
_IO_no_init (&sf.f._sbf._f, _IO_USER_LOCK, 0, &wd, &_IO_wstrn_jumps);
_IO_fwide (&sf.f._sbf._f, 1);
string[0] = L'\0';
_IO_wstr_init_static (&sf.f._sbf._f, string, maxlen - 1, string);
ret = _IO_vfwprintf ((_IO_FILE *) &sf.f._sbf, format, args);
if (sf.f._sbf._f._wide_data->_IO_buf_base == sf.overflow_buf)
output does not fit in the provided buffer. */
return -1;
*sf.f._sbf._f._wide_data->_IO_write_ptr = '\0';
return ret;
}
weak_alias (_IO_vswprintf, __vswprintf)
weak_alias (_IO_vswprintf, vswprintf)
