stdio/FreeBSD/fputwc.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/fputwc.c,v 1.11 2008/04/17 22:17:53 jhb Exp $");
  29
  30 #include "xlocale_private.h"
  31
  32 #include "namespace.h"
  33 #include <errno.h>
  34 #include <limits.h>
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37 #include <wchar.h>
  38 #include "un-namespace.h"
  39 #include "libc_private.h"
  40 #include "local.h"
  41 #include "mblocal.h"
  42
  43 /*
  44  * Non-MT-safe version.
  45  */
  46 __private_extern__ wint_t
  47 __fputwc(wchar_t wc, FILE *fp, locale_t loc)
  48 {
  49         char buf[MB_LEN_MAX];
  50         size_t i, len;
  51         struct __xlocale_st_runelocale *xrl = loc->__lc_ctype;
  52
  53         if (xrl->__mb_cur_max == 1 && wc > 0 && wc <= UCHAR_MAX) {
  54                 /*
  55                  * Assume single-byte locale with no special encoding.
  56                  * A more careful test would be to check
  57                  * _CurrentRuneLocale->encoding.
  58                  */
  59                 *buf = (unsigned char)wc;
  60                 len = 1;
  61         } else {
  62                 if ((len = loc->__lc_ctype->__wcrtomb(buf, wc, &fp->_mbstate, loc)) == (size_t)-1) {
  63                         fp->_flags |= __SERR;
  64                         return (WEOF);
  65                 }
  66         }
  67
  68         for (i = 0; i < len; i++)
  69                 if (__sputc((unsigned char)buf[i], fp) == EOF)
  70                         return (WEOF);
  71
  72         return ((wint_t)wc);
  73 }
  74
  75 /*
  76  * MT-safe version.
  77  */
  78 wint_t
  79 fputwc(wchar_t wc, FILE *fp)
  80 {
  81         wint_t r;
  82
  83         FLOCKFILE(fp);
  84         ORIENT(fp, 1);
  85         r = __fputwc(wc, fp, __current_locale());
  86         FUNLOCKFILE(fp);
  87
  88         return (r);
  89 }
  90
  91 wint_t
  92 fputwc_l(wchar_t wc, FILE *fp, locale_t loc)
  93 {
  94         wint_t r;
  95
  96         NORMALIZE_LOCALE(loc);
  97         FLOCKFILE(fp);
  98         ORIENT(fp, 1);
  99         r = __fputwc(wc, fp, loc);
 100         FUNLOCKFILE(fp);
 101
 102         return (r);
 103 }