2 * Copyright (c) 2002-2004 Tim J. Robbins.
5 * Copyright (c) 2011 The FreeBSD Foundation
7 * Portions of this software were developed by David Chisnall
8 * under sponsorship from the FreeBSD Foundation.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * $FreeBSD: head/lib/libc/stdio/fgetws.c 227753 2011-11-20 14:45:42Z theraven $
35 #include "namespace.h"
40 #include "un-namespace.h"
41 #include "libc_private.h"
46 fgetws_l(wchar_t * __restrict ws, int n, FILE * __restrict fp, locale_t locale)
48 struct wchar_io_data *wcio;
55 struct xlocale_ctype *l = XLOCALE_CTYPE(locale);
70 wcio->wcio_ungetwc_inbuf = 0;
71 st = &wcio->wcio_mbstate_out;
73 if (fp->pub._r <= 0 && __srefill(fp))
79 nl = memchr(fp->pub._p, '\n', fp->pub._r);
80 nconv = l->__mbsnrtowcs(wsp, &src,
81 nl != NULL ? (nl - fp->pub._p + 1) :
82 fp->pub._r, n - 1, st);
83 if (nconv == (size_t)-1)
84 /* Conversion error */
88 * We hit a null byte. Increment the character count,
89 * since mbsnrtowcs()'s return value doesn't include
90 * the terminating null, then resume conversion
94 src = memchr(fp->pub._p, '\0', fp->pub._r);
97 fp->pub._r -= (unsigned char *)src - fp->pub._p;
98 fp->pub._p = (unsigned char *)src;
101 } while (wsp[-1] != L'\n' && n > 1 && (fp->pub._r > 0 ||
102 __srefill(fp) == 0));
106 if (!l->__mbsinit(st))
107 /* Incomplete character */
119 fgetws(wchar_t * __restrict ws, int n, FILE * __restrict fp)
121 return fgetws_l(ws, n, fp, __get_locale());