fputwc.c revision 105234
1/*- 2 * Copyright (c) 2002 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: head/lib/libc/stdio/fputwc.c 105234 2002-10-16 12:09:43Z tjr $"); 29 30#include "namespace.h" 31#include <errno.h> 32#include <limits.h> 33#include <stdio.h> 34#include <stdlib.h> 35#include <wchar.h> 36#include "un-namespace.h" 37#include "libc_private.h" 38#include "local.h" 39 40/* 41 * Non-MT-safe version. 42 */ 43wint_t 44__fputwc(wchar_t wc, FILE *fp) 45{ 46 char buf[MB_LEN_MAX]; 47 mbstate_t mbs; 48 size_t i, len; 49 50 if (MB_LEN_MAX == 1 && wc > 0 && wc <= UCHAR_MAX) { 51 /* 52 * Assume single-byte locale with no special encoding. 53 * A more careful test would be to check 54 * _CurrentRuneLocale->encoding. 55 */ 56 *buf = (unsigned char)wc; 57 len = 1; 58 } else { 59 memset(&mbs, 0, sizeof(mbs)); 60 if ((len = wcrtomb(buf, wc, &mbs)) == (size_t)-1) { 61 fp->_flags |= __SERR; 62 return (WEOF); 63 } 64 } 65 66 for (i = 0; i < len; i++) 67 if (__sputc((unsigned char)buf[i], fp) == EOF) 68 return (WEOF); 69 70 return ((wint_t)wc); 71} 72 73/* 74 * MT-safe version. 75 */ 76wint_t 77fputwc(wchar_t wc, FILE *fp) 78{ 79 wint_t r; 80 81 FLOCKFILE(fp); 82 ORIENT(fp, 1); 83 r = __fputwc(wc, fp); 84 FUNLOCKFILE(fp); 85 86 return (r); 87} 88