usr/src/lib/libc/port/locale/fputws.c

   1 /*
   2  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
   3  * Use is subject to license terms.
   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 #include "lint.h"
  27 #include "mse_int.h"
  28 #include "file64.h"
  29 #include "mtlib.h"
  30 #include <errno.h>
  31 #include <limits.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <wchar.h>
  35 #include "mblocal.h"
  36 #include "stdiom.h"
  37
  38 static int
  39 _fputws_impl(const wchar_t *_RESTRICT_KYWD ws, FILE *_RESTRICT_KYWD fp,
  40     int orient)
  41 {
  42         int nchars;
  43         int nwritten;
  44         char buf[BUFSIZ];
  45         rmutex_t *lk;
  46
  47         /*
  48          * The FreeBSD implementation here was a bit more complex, because
  49          * it repeated much of what is in fputs.  For simplicity's sake, we
  50          * juse wctomb to convert the wide string to a mbs, and then use
  51          * fputs to print the mbs.
  52          */
  53
  54         nchars = wcslen(ws);
  55         nwritten = 0;
  56
  57         FLOCKFILE(lk, fp);
  58         if (orient && GET_NO_MODE(fp))
  59                 _setorientation(fp, _WC_MODE);
  60
  61         while (nchars > 0) {
  62                 int nbytes = 0;
  63                 char *ptr = buf;
  64                 while ((nbytes < (BUFSIZ - (MB_LEN_MAX * 2))) && nchars) {
  65                         int n;
  66                         if ((n = wctomb(ptr, *ws)) < 0) {
  67                                 FUNLOCKFILE(lk);
  68                                 fp->_flag |= _IOERR;
  69                                 errno = EILSEQ;
  70                                 return (EOF);
  71                         }
  72                         ws++;
  73                         ptr += n;
  74                         nbytes += n;
  75                         nchars--;
  76                 }
  77                 *ptr = '\0';
  78                 if (fputs(buf, fp) < nbytes) {
  79                         FUNLOCKFILE(lk);
  80                         return (EOF);
  81                 }
  82                 nwritten += nbytes;
  83         }
  84         FUNLOCKFILE(lk);
  85         return (nwritten);
  86 }
  87
  88 int
  89 fputws(const wchar_t *_RESTRICT_KYWD ws, FILE *_RESTRICT_KYWD fp)
  90 {
  91         return (_fputws_impl(ws, fp, 0));
  92 }
  93
  94 int
  95 __fputws_xpg5(const wchar_t *ws, FILE *fp)
  96 {
  97         return (_fputws_impl(ws, fp, 1));
  98 }