1/****************************************************************************
2 * Copyright 2018,2020 Thomas E. Dickey                                     *
3 * Copyright 2016,2017 Free Software Foundation, Inc.                       *
4 *                                                                          *
5 * Permission is hereby granted, free of charge, to any person obtaining a  *
6 * copy of this software and associated documentation files (the            *
7 * "Software"), to deal in the Software without restriction, including      *
8 * without limitation the rights to use, copy, modify, merge, publish,      *
9 * distribute, distribute with modifications, sublicense, and/or sell       *
10 * copies of the Software, and to permit persons to whom the Software is    *
11 * furnished to do so, subject to the following conditions:                 *
12 *                                                                          *
13 * The above copyright notice and this permission notice shall be included  *
14 * in all copies or substantial portions of the Software.                   *
15 *                                                                          *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
23 *                                                                          *
24 * Except as contained in this notice, the name(s) of the above copyright   *
25 * holders shall not be used in advertising or otherwise to promote the     *
26 * sale, use or other dealings in this Software without prior written       *
27 * authorization.                                                           *
28 ****************************************************************************/
29
30/****************************************************************************
31 *  Author: Thomas E. Dickey                                                *
32 ****************************************************************************/
33
34/*
35 * clear.c --  clears the terminal's screen
36 */
37
38#define USE_LIBTINFO
39#include <clear_cmd.h>
40
41MODULE_ID("$Id: clear_cmd.c,v 1.1 2023/10/17 09:52:10 nicm Exp $")
42
43static int
44putch(int c)
45{
46    return putchar(c);
47}
48
49int
50clear_cmd(bool legacy)
51{
52    int retval = tputs(clear_screen, lines > 0 ? lines : 1, putch);
53    if (!legacy) {
54	/* Clear the scrollback buffer if possible. */
55	char *E3 = tigetstr("E3");
56	if (E3)
57	    (void) tputs(E3, lines > 0 ? lines : 1, putch);
58    }
59    return retval;
60}
61