1*32bb5217SDaniel Fojt /****************************************************************************
2*32bb5217SDaniel Fojt * Copyright 2018,2020 Thomas E. Dickey *
3*32bb5217SDaniel Fojt * Copyright 2016,2017 Free Software Foundation, Inc. *
4*32bb5217SDaniel Fojt * *
5*32bb5217SDaniel Fojt * Permission is hereby granted, free of charge, to any person obtaining a *
6*32bb5217SDaniel Fojt * copy of this software and associated documentation files (the *
7*32bb5217SDaniel Fojt * "Software"), to deal in the Software without restriction, including *
8*32bb5217SDaniel Fojt * without limitation the rights to use, copy, modify, merge, publish, *
9*32bb5217SDaniel Fojt * distribute, distribute with modifications, sublicense, and/or sell *
10*32bb5217SDaniel Fojt * copies of the Software, and to permit persons to whom the Software is *
11*32bb5217SDaniel Fojt * furnished to do so, subject to the following conditions: *
12*32bb5217SDaniel Fojt * *
13*32bb5217SDaniel Fojt * The above copyright notice and this permission notice shall be included *
14*32bb5217SDaniel Fojt * in all copies or substantial portions of the Software. *
15*32bb5217SDaniel Fojt * *
16*32bb5217SDaniel Fojt * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17*32bb5217SDaniel Fojt * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18*32bb5217SDaniel Fojt * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19*32bb5217SDaniel Fojt * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20*32bb5217SDaniel Fojt * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21*32bb5217SDaniel Fojt * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22*32bb5217SDaniel Fojt * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23*32bb5217SDaniel Fojt * *
24*32bb5217SDaniel Fojt * Except as contained in this notice, the name(s) of the above copyright *
25*32bb5217SDaniel Fojt * holders shall not be used in advertising or otherwise to promote the *
26*32bb5217SDaniel Fojt * sale, use or other dealings in this Software without prior written *
27*32bb5217SDaniel Fojt * authorization. *
28*32bb5217SDaniel Fojt ****************************************************************************/
29*32bb5217SDaniel Fojt
30*32bb5217SDaniel Fojt /****************************************************************************
31*32bb5217SDaniel Fojt * Author: Thomas E. Dickey *
32*32bb5217SDaniel Fojt ****************************************************************************/
33*32bb5217SDaniel Fojt
34*32bb5217SDaniel Fojt /*
35*32bb5217SDaniel Fojt * clear.c -- clears the terminal's screen
36*32bb5217SDaniel Fojt */
37*32bb5217SDaniel Fojt
38*32bb5217SDaniel Fojt #define USE_LIBTINFO
39*32bb5217SDaniel Fojt #include <clear_cmd.h>
40*32bb5217SDaniel Fojt
41*32bb5217SDaniel Fojt MODULE_ID("$Id: clear_cmd.c,v 1.5 2020/02/02 23:34:34 tom Exp $")
42*32bb5217SDaniel Fojt
43*32bb5217SDaniel Fojt static int
putch(int c)44*32bb5217SDaniel Fojt putch(int c)
45*32bb5217SDaniel Fojt {
46*32bb5217SDaniel Fojt return putchar(c);
47*32bb5217SDaniel Fojt }
48*32bb5217SDaniel Fojt
49*32bb5217SDaniel Fojt int
clear_cmd(bool legacy)50*32bb5217SDaniel Fojt clear_cmd(bool legacy)
51*32bb5217SDaniel Fojt {
52*32bb5217SDaniel Fojt int retval = tputs(clear_screen, lines > 0 ? lines : 1, putch);
53*32bb5217SDaniel Fojt if (!legacy) {
54*32bb5217SDaniel Fojt /* Clear the scrollback buffer if possible. */
55*32bb5217SDaniel Fojt char *E3 = tigetstr("E3");
56*32bb5217SDaniel Fojt if (E3)
57*32bb5217SDaniel Fojt (void) tputs(E3, lines > 0 ? lines : 1, putch);
58*32bb5217SDaniel Fojt }
59*32bb5217SDaniel Fojt return retval;
60*32bb5217SDaniel Fojt }
61