GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcurses/base/lib_ungetch.c Lines: 0 10 0.0 %
Date: 2017-11-07 Branches: 0 12 0.0 %

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/* $OpenBSD: lib_ungetch.c,v 1.3 2010/01/12 23:22:06 nicm Exp $ */
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/****************************************************************************
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 * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
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 *                                                                          *
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 * Permission is hereby granted, free of charge, to any person obtaining a  *
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 * copy of this software and associated documentation files (the            *
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 * "Software"), to deal in the Software without restriction, including      *
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 * without limitation the rights to use, copy, modify, merge, publish,      *
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 * distribute, distribute with modifications, sublicense, and/or sell       *
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 * copies of the Software, and to permit persons to whom the Software is    *
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 * furnished to do so, subject to the following conditions:                 *
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 *                                                                          *
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 * The above copyright notice and this permission notice shall be included  *
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 * in all copies or substantial portions of the Software.                   *
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 *                                                                          *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
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 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
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 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
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 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
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 *                                                                          *
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 * Except as contained in this notice, the name(s) of the above copyright   *
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 * holders shall not be used in advertising or otherwise to promote the     *
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 * sale, use or other dealings in this Software without prior written       *
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 * authorization.                                                           *
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 ****************************************************************************/
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/****************************************************************************
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 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
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 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
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 *     and: Thomas E. Dickey                        1996-on                 *
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 ****************************************************************************/
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/*
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**	lib_ungetch.c
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**
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**	The routine ungetch().
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**
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*/
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#include <curses.priv.h>
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MODULE_ID("$Id: lib_ungetch.c,v 1.3 2010/01/12 23:22:06 nicm Exp $")
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#include <fifo_defs.h>
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#ifdef TRACE
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NCURSES_EXPORT(void)
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_nc_fifo_dump(SCREEN *sp)
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{
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    int i;
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    T(("head = %d, tail = %d, peek = %d", head, tail, peek));
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    for (i = 0; i < 10; i++)
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	T(("char %d = %s", i, _nc_tracechar(sp, sp->_fifo[i])));
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}
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#endif /* TRACE */
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NCURSES_EXPORT(int)
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_nc_ungetch(SCREEN *sp, int ch)
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{
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    int rc = ERR;
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    if (tail != -1) {
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	if (head == -1) {
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	    head = 0;
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	    t_inc();
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	    peek = tail;	/* no raw keys */
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	} else
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	    h_dec();
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	sp->_fifo[head] = ch;
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	T(("ungetch %s ok", _nc_tracechar(sp, ch)));
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#ifdef TRACE
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	if (USE_TRACEF(TRACE_IEVENT)) {
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	    _nc_fifo_dump(sp);
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	    _nc_unlock_global(tracef);
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	}
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#endif
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	rc = OK;
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    }
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    return rc;
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}
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NCURSES_EXPORT(int)
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ungetch(int ch)
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{
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    T((T_CALLED("ungetch(%s)"), _nc_tracechar(SP, ch)));
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    returnCode(_nc_ungetch(SP, ch));
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}