1 /* $NetBSD: fputwc.c,v 1.1 2001/12/07 11:47:42 yamt Exp $ */ 2 3 /*- 4 * Copyright (c)2001 Citrus Project, 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $Citrus$ 29 */ 30 31 #include <assert.h> 32 #include <errno.h> 33 #include <limits.h> 34 #include <stdio.h> 35 #include <wchar.h> 36 #include "local.h" 37 #include "fvwrite.h" 38 #include "reentrant.h" 39 40 wint_t 41 fputwc(wchar_t wc, FILE *fp) 42 { 43 struct wchar_io_data *wcio; 44 mbstate_t *st; 45 size_t size; 46 char buf[MB_LEN_MAX]; 47 struct __suio uio; 48 struct __siov iov; 49 50 _DIAGASSERT(fp != NULL); 51 52 /* LINTED we don't play with buf */ 53 iov.iov_base = (void *)buf; 54 uio.uio_iov = &iov; 55 uio.uio_iovcnt = 1; 56 57 FLOCKFILE(fp); 58 _SET_ORIENTATION(fp, 1); 59 wcio = WCIO_GET(fp); 60 if (wcio == 0) { 61 FUNLOCKFILE(fp); 62 errno = ENOMEM; 63 return WEOF; 64 } 65 66 wcio->wcio_ungetwc_inbuf = 0; 67 st = &wcio->wcio_mbstate_out; 68 69 size = wcrtomb(buf, wc, st); 70 if (size == (size_t)-1) { 71 FUNLOCKFILE(fp); 72 errno = EILSEQ; 73 return WEOF; 74 } 75 76 _DIAGASSERT(size != 0); 77 78 uio.uio_resid = iov.iov_len = size; 79 if (__sfvwrite(fp, &uio)) { 80 FUNLOCKFILE(fp); 81 return WEOF; 82 } 83 84 FUNLOCKFILE(fp); 85 86 return (wint_t)wc; 87 } 88