stdio/FreeBSD/fputws.c

   1 /*-
   2  * Copyright (c) 2002-2004 Tim J. Robbins.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD: src/lib/libc/stdio/fputws.c,v 1.6 2004/07/21 10:54:57 tjr Exp $");
  29
  30 #include "namespace.h"
  31 #include <errno.h>
  32 #include <limits.h>
  33 #include <stdio.h>
  34 #include <wchar.h>
  35 #include "un-namespace.h"
  36 #include "fvwrite.h"
  37 #include "libc_private.h"
  38 #include "local.h"
  39 #include "mblocal.h"
  40
  41 int
  42 fputws(const wchar_t * __restrict ws, FILE * __restrict fp)
  43 {
  44         size_t nbytes;
  45         char buf[BUFSIZ];
  46         struct __suio uio;
  47         struct __siov iov;
  48
  49         FLOCKFILE(fp);
  50         ORIENT(fp, 1);
  51         if (prepwrite(fp) != 0)
  52                 goto error;
  53         uio.uio_iov = &iov;
  54         uio.uio_iovcnt = 1;
  55         iov.iov_base = buf;
  56         do {
  57                 nbytes = __wcsnrtombs(buf, &ws, SIZE_T_MAX, sizeof(buf),
  58                     &fp->_extra->mbstate);
  59                 if (nbytes == (size_t)-1)
  60                         goto error;
  61                 iov.iov_len = uio.uio_resid = nbytes;
  62                 if (__sfvwrite(fp, &uio) != 0)
  63                         goto error;
  64         } while (ws != NULL);
  65         FUNLOCKFILE(fp);
  66         return (0);
  67
  68 error:
  69         FUNLOCKFILE(fp);
  70         return (-1);
  71 }