GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/stdio/ungetwc.c Lines: 0 16 0.0 %
Date: 2017-11-13 Branches: 0 18 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: ungetwc.c,v 1.6 2015/08/31 02:53:57 guenther Exp $	*/
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/* $NetBSD: ungetwc.c,v 1.2 2003/01/18 11:29:59 thorpej Exp $ */
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/*-
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 * Copyright (c)2001 Citrus Project,
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 * All rights reserved.
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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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 * $Citrus$
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 */
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#include <errno.h>
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#include <stdio.h>
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#include <wchar.h>
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#include "local.h"
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wint_t
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__ungetwc(wint_t wc, FILE *fp)
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{
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	struct wchar_io_data *wcio;
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	if (wc == WEOF)
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		return WEOF;
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	_SET_ORIENTATION(fp, 1);
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	/*
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	 * XXX since we have no way to transform a wchar string to
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	 * a char string in reverse order, we can't use ungetc.
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	 */
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	/* XXX should we flush ungetc buffer? */
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	wcio = WCIO_GET(fp);
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	if (wcio == 0) {
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		errno = ENOMEM; /* XXX */
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		return WEOF;
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	}
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	if (wcio->wcio_ungetwc_inbuf >= WCIO_UNGETWC_BUFSIZE) {
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		return WEOF;
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	}
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	wcio->wcio_ungetwc_buf[wcio->wcio_ungetwc_inbuf++] = wc;
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	__sclearerr(fp);
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	return wc;
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}
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wint_t
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ungetwc(wint_t wc, FILE *fp)
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{
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	wint_t r;
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	FLOCKFILE(fp);
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	r = __ungetwc(wc, fp);
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	FUNLOCKFILE(fp);
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	return (r);
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}
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DEF_STRONG(ungetwc);