1c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes/* $OpenBSD: fgetws.c,v 1.6 2009/11/09 00:18:27 kurt Exp $ */ 2c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes/* $NetBSD: fgetws.c,v 1.1 2003/03/07 07:11:37 tshiozak Exp $ */ 3c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes 4c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes/*- 5c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * Copyright (c) 2002 Tim J. Robbins. 6c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * All rights reserved. 7c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * 8c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * Redistribution and use in source and binary forms, with or without 9c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * modification, are permitted provided that the following conditions 10c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * are met: 11c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * 1. Redistributions of source code must retain the above copyright 12c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * notice, this list of conditions and the following disclaimer. 13c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * 2. Redistributions in binary form must reproduce the above copyright 14c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * notice, this list of conditions and the following disclaimer in the 15c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * documentation and/or other materials provided with the distribution. 16c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * 17c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * SUCH DAMAGE. 28c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * 29c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * Original version ID: 30c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * FreeBSD: src/lib/libc/stdio/fgetws.c,v 1.4 2002/09/20 13:25:40 tjr Exp 31c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes * 32c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes */ 33c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes 34c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes#include <errno.h> 35c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes#include <stdio.h> 36c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes#include <wchar.h> 37c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes#include "local.h" 38c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes 39c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hugheswchar_t * 40c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughesfgetws(wchar_t * __restrict ws, int n, FILE * __restrict fp) 41c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes{ 42c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes wchar_t *wsp; 43c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes wint_t wc; 44c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes 45c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes FLOCKFILE(fp); 46c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes _SET_ORIENTATION(fp, 1); 47c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes 48c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes if (n <= 0) { 49c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes errno = EINVAL; 50c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes goto error; 51c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes } 52c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes 53c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes wsp = ws; 54c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes while (n-- > 1) { 55c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes if ((wc = __fgetwc_unlock(fp)) == WEOF && errno == EILSEQ) { 56c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes goto error; 57c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes } 58c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes if (wc == WEOF) { 59c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes if (wsp == ws) { 60c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes /* EOF/error, no characters read yet. */ 61c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes goto error; 62c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes } 63c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes break; 64c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes } 65c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes *wsp++ = (wchar_t)wc; 66c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes if (wc == L'\n') { 67c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes break; 68c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes } 69c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes } 70c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes 71c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes *wsp++ = L'\0'; 72c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes FUNLOCKFILE(fp); 73c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes 74c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes return (ws); 75c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes 76c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hugheserror: 77c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes FUNLOCKFILE(fp); 78c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes return (NULL); 79c932225e1061dc57fc4bf2d6203d9737f4f989faElliott Hughes} 80