3e48993c7c
i.e. partial line, but set __SERR and errno in the same time, which is inconsistent. Now both OpenBSD and NetBSD return failure, i.e. no line and set error indicators for such case, so make our fgetln() and fgetwln() (as its wide version) compatible with the rest of *BSD. PR: 212033 MFC after: 7 days
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/*-
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* Copyright (c) 2002-2004 Tim J. Robbins.
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* All rights reserved.
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*
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* Copyright (c) 2011 The FreeBSD Foundation
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* All rights reserved.
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* Portions of this software were developed by David Chisnall
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "namespace.h"
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#include <stdio.h>
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#include <wchar.h>
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#include "un-namespace.h"
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#include "libc_private.h"
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#include "local.h"
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#include "xlocale_private.h"
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wchar_t *fgetwln_l(FILE * __restrict, size_t *, locale_t);
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wchar_t *
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fgetwln_l(FILE * __restrict fp, size_t *lenp, locale_t locale)
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{
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wint_t wc;
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size_t len;
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FIX_LOCALE(locale);
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FLOCKFILE(fp);
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ORIENT(fp, 1);
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len = 0;
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while ((wc = __fgetwc(fp, locale)) != WEOF) {
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#define GROW 512
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if (len * sizeof(wchar_t) >= fp->_lb._size &&
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__slbexpand(fp, (len + GROW) * sizeof(wchar_t))) {
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fp->_flags |= __SERR;
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goto error;
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}
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*((wchar_t *)fp->_lb._base + len++) = wc;
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if (wc == L'\n')
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break;
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}
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if (len == 0 || (wc == WEOF && !__sfeof(fp)))
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goto error;
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FUNLOCKFILE(fp);
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*lenp = len;
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return ((wchar_t *)fp->_lb._base);
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error:
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FUNLOCKFILE(fp);
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*lenp = 0;
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return (NULL);
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}
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wchar_t *
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fgetwln(FILE * __restrict fp, size_t *lenp)
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{
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return fgetwln_l(fp, lenp, __get_locale());
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}
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