1 /* $NetBSD: fputwc.c,v 1.4 2005/06/12 05:21:27 lukem 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 <sys/cdefs.h> 32 #if defined(LIBC_SCCS) && !defined(lint) 33 __RCSID("$NetBSD: fputwc.c,v 1.4 2005/06/12 05:21:27 lukem Exp $"); 34 #endif /* LIBC_SCCS and not lint */ 35 36 #include <assert.h> 37 #include <errno.h> 38 #include <limits.h> 39 #include <stdio.h> 40 #include <wchar.h> 41 #include "reentrant.h" 42 #include "local.h" 43 #include "fvwrite.h" 44 45 wint_t 46 __fputwc_unlock(wchar_t wc, FILE *fp) 47 { 48 struct wchar_io_data *wcio; 49 mbstate_t *st; 50 size_t size; 51 char buf[MB_LEN_MAX]; 52 struct __suio uio; 53 struct __siov iov; 54 55 _DIAGASSERT(fp != NULL); 56 57 /* LINTED we don't play with buf */ 58 iov.iov_base = (void *)buf; 59 uio.uio_iov = &iov; 60 uio.uio_iovcnt = 1; 61 62 _SET_ORIENTATION(fp, 1); 63 wcio = WCIO_GET(fp); 64 if (wcio == 0) { 65 errno = ENOMEM; 66 return WEOF; 67 } 68 69 wcio->wcio_ungetwc_inbuf = 0; 70 st = &wcio->wcio_mbstate_out; 71 72 size = wcrtomb(buf, wc, st); 73 if (size == (size_t)-1) { 74 errno = EILSEQ; 75 return WEOF; 76 } 77 78 _DIAGASSERT(size != 0); 79 80 uio.uio_resid = iov.iov_len = size; 81 if (__sfvwrite(fp, &uio)) { 82 return WEOF; 83 } 84 85 return (wint_t)wc; 86 } 87 88 wint_t 89 fputwc(wchar_t wc, FILE *fp) 90 { 91 wint_t r; 92 93 _DIAGASSERT(fp != NULL); 94 95 FLOCKFILE(fp); 96 r = __fputwc_unlock(wc, fp); 97 FUNLOCKFILE(fp); 98 99 return (r); 100 } 101