lib/libc/stdio/fputws.c

   1 /*-
   2  * Copyright (c) 2002-2004 Tim J. Robbins.
   3  * All rights reserved.
   4  *
   5  * Copyright (c) 2011 The FreeBSD Foundation
   6  * All rights reserved.
   7  * Portions of this software were developed by David Chisnall
   8  * under sponsorship from the FreeBSD Foundation.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * $FreeBSD: head/lib/libc/stdio/fputws.c 234536 2012-04-21 07:31:27Z das $
  32  */
  33
  34
  35 #include "namespace.h"
  36 #include <errno.h>
  37 #include <limits.h>
  38 #include <stdio.h>
  39 #include <wchar.h>
  40 #include "un-namespace.h"
  41 #include "libc_private.h"
  42 #include "local.h"
  43 #include "mblocal.h"
  44
  45 int
  46 fputws_l(const wchar_t * __restrict ws, FILE * __restrict fp, locale_t locale)
  47 {
  48         struct wchar_io_data *wcio;
  49         mbstate_t *st;
  50         size_t nbytes;
  51         char buf[BUFSIZ];
  52         struct __suio uio;
  53         struct __siov iov;
  54         const wchar_t *wsp;
  55         FIX_LOCALE(locale);
  56         struct xlocale_ctype *l = XLOCALE_CTYPE(locale);
  57
  58         FLOCKFILE(fp);
  59         ORIENT(fp, 1);
  60         wcio = WCIO_GET(fp);
  61         if (wcio == NULL)
  62                 goto error;
  63         wcio->wcio_ungetwc_inbuf = 0;
  64         st = &wcio->wcio_mbstate_out;
  65
  66         if (prepwrite(fp) != 0)
  67                 goto error;
  68         uio.uio_iov = &iov;
  69         uio.uio_iovcnt = 1;
  70         iov.iov_base = buf;
  71         wsp = ws;
  72         do {
  73                 nbytes = l->__wcsnrtombs(buf, &wsp, SIZE_T_MAX, sizeof(buf),
  74                     st);
  75                 if (nbytes == (size_t)-1)
  76                         goto error;
  77                 iov.iov_len = uio.uio_resid = nbytes;
  78                 if (__sfvwrite(fp, &uio) != 0)
  79                         goto error;
  80         } while (wsp != NULL);
  81         FUNLOCKFILE(fp);
  82         return (0);
  83
  84 error:
  85         FUNLOCKFILE(fp);
  86         return (-1);
  87 }
  88
  89 int
  90 fputws(const wchar_t * __restrict ws, FILE * __restrict fp)
  91 {
  92         return fputws_l(ws, fp, __get_locale());
  93 }