92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
|
/* $NetBSD: fgetws.c,v 1.1 2003/03/07 07:11:37 tshiozak Exp $ */
|
||
|
|
|
||
|
|
/*-
|
||
|
|
* Copyright (c) 2002 Tim J. Robbins.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
* SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
* Original version ID:
|
||
|
|
* FreeBSD: src/lib/libc/stdio/fgetws.c,v 1.4 2002/09/20 13:25:40 tjr Exp
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/cdefs.h>
|
||
|
|
#if defined(LIB_SCCS) && !defined(lint)
|
||
|
|
__RCSID("$NetBSD: fgetws.c,v 1.1 2003/03/07 07:11:37 tshiozak Exp $");
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <assert.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <wchar.h>
|
||
|
|
#include "reentrant.h"
|
||
|
|
#include "local.h"
|
||
|
|
|
||
|
|
wchar_t *
|
||
|
|
fgetws(ws, n, fp)
|
||
|
|
wchar_t * __restrict ws;
|
||
|
|
int n;
|
||
|
|
FILE * __restrict fp;
|
||
|
|
{
|
||
|
|
wchar_t *wsp;
|
||
|
|
wint_t wc;
|
||
|
|
|
||
|
|
_DIAGASSERT(fp != NULL);
|
||
|
|
_DIAGASSERT(ws != NULL);
|
||
|
|
|
||
|
|
FLOCKFILE(fp);
|
||
|
|
_SET_ORIENTATION(fp, 1);
|
||
|
|
|
||
|
|
if (n <= 0) {
|
||
|
|
errno = EINVAL;
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
|
||
|
|
wsp = ws;
|
||
|
|
while (n-- > 1) {
|
||
|
|
if ((wc = __fgetwc_unlock(fp)) == WEOF && errno == EILSEQ) {
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
if (wc == WEOF) {
|
||
|
|
if (wsp == ws) {
|
||
|
|
/* EOF/error, no characters read yet. */
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
*wsp++ = (wchar_t)wc;
|
||
|
|
if (wc == L'\n') {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
*wsp++ = L'\0';
|
||
|
|
FUNLOCKFILE(fp);
|
||
|
|
|
||
|
|
return (ws);
|
||
|
|
|
||
|
|
error:
|
||
|
|
FUNLOCKFILE(fp);
|
||
|
|
return (NULL);
|
||
|
|
}
|