mirror of
https://github.com/freebsd/freebsd-src
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559a218c9b
These sys/cdefs.h are not needed. Purge them. They are mostly left-over from the $FreeBSD$ removal. A few in libc are still required for macros that cdefs.h defines. Keep those. Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D42385
130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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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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*
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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 "namespace.h"
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#include <errno.h>
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#include <stdio.h>
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#include <string.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 "mblocal.h"
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wchar_t *
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fgetws_l(wchar_t * __restrict ws, int n, FILE * __restrict fp, locale_t locale)
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{
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int sret;
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wchar_t *wsp, *ret;
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size_t nconv;
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const char *src;
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unsigned char *nl;
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FIX_LOCALE(locale);
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struct xlocale_ctype *l = XLOCALE_CTYPE(locale);
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FLOCKFILE_CANCELSAFE(fp);
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ORIENT(fp, 1);
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if (n <= 0) {
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fp->_flags |= __SERR;
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errno = EINVAL;
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goto error;
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}
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wsp = ws;
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if (n == 1)
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goto ok;
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if (fp->_r <= 0 && __srefill(fp))
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/* EOF or ferror */
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goto error;
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sret = 0;
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do {
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src = fp->_p;
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nl = memchr(fp->_p, '\n', fp->_r);
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nconv = l->__mbsnrtowcs(wsp, &src,
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nl != NULL ? (nl - fp->_p + 1) : fp->_r,
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n - 1, &fp->_mbstate);
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if (nconv == (size_t)-1) {
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/* Conversion error */
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fp->_flags |= __SERR;
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goto error;
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}
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if (src == NULL) {
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/*
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* We hit a null byte. Increment the character count,
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* since mbsnrtowcs()'s return value doesn't include
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* the terminating null, then resume conversion
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* after the null.
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*/
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nconv++;
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src = memchr(fp->_p, '\0', fp->_r);
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src++;
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}
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fp->_r -= (unsigned char *)src - fp->_p;
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fp->_p = (unsigned char *)src;
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n -= nconv;
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wsp += nconv;
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} while ((wsp == ws || wsp[-1] != L'\n') && n > 1 && (fp->_r > 0 ||
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(sret = __srefill(fp)) == 0));
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if (sret && !__sfeof(fp))
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/* ferror */
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goto error;
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if (!l->__mbsinit(&fp->_mbstate)) {
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/* Incomplete character */
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fp->_flags |= __SERR;
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errno = EILSEQ;
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goto error;
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}
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if (wsp == ws)
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/* EOF */
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goto error;
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ok:
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*wsp = L'\0';
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ret = ws;
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end:
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FUNLOCKFILE_CANCELSAFE();
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return (ret);
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error:
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ret = NULL;
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goto end;
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}
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wchar_t *
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fgetws(wchar_t * __restrict ws, int n, FILE * __restrict fp)
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{
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return fgetws_l(ws, n, fp, __get_locale());
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}
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