1 /* 2 Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR> 3 This program and the accompanying materials are licensed and made available 4 under the terms and conditions of the BSD License that accompanies this 5 distribution. The full text of the license may be found at 6 http://opensource.org/licenses/bsd-license. 7 8 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 9 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 10 11 * Copyright (c) 2002 Tim J. Robbins. 12 * All rights reserved. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * Original version ID: 36 * FreeBSD: src/lib/libc/stdio/fgetws.c,v 1.4 2002/09/20 13:25:40 tjr Exp 37 38 $NetBSD: fgetws.c,v 1.2 2006/07/03 17:06:36 tnozaki Exp $ 39 */ 40 #include <LibConfig.h> 41 #include <sys/EfiCdefs.h> 42 43 #include <assert.h> 44 #include <errno.h> 45 #include <stdio.h> 46 #include <wchar.h> 47 #include "reentrant.h" 48 #include "local.h" 49 50 wchar_t * 51 fgetws( 52 wchar_t * __restrict ws, 53 int n, 54 FILE * __restrict fp 55 ) 56 { 57 wchar_t *wsp; 58 wint_t wc; 59 60 _DIAGASSERT(fp != NULL); 61 _DIAGASSERT(ws != NULL); 62 if(fp == NULL) { 63 errno = EINVAL; 64 return (NULL); 65 } 66 67 FLOCKFILE(fp); 68 _SET_ORIENTATION(fp, 1); 69 70 if (n <= 0) { 71 errno = EINVAL; 72 goto error; 73 } 74 75 wsp = ws; 76 while (n-- > 1) { 77 wc = __fgetwc_unlock(fp); 78 if (__sferror(fp) != 0) 79 goto error; 80 if (__sfeof(fp) != 0) { 81 if (wsp == ws) { 82 /* EOF/error, no characters read yet. */ 83 goto error; 84 } 85 break; 86 } 87 *wsp++ = (wchar_t)wc; 88 if (wc == L'\n') { 89 break; 90 } 91 } 92 93 *wsp++ = L'\0'; 94 FUNLOCKFILE(fp); 95 96 return (ws); 97 98 error: 99 FUNLOCKFILE(fp); 100 return (NULL); 101 } 102