1 /* $NetBSD: initscr.c,v 1.33 2018/10/02 17:35:44 roy Exp $ */ 2 3 /* 4 * Copyright (c) 1981, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)initscr.c 8.2 (Berkeley) 5/4/94"; 36 #else 37 __RCSID("$NetBSD: initscr.c,v 1.33 2018/10/02 17:35:44 roy Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <stdlib.h> 42 43 #include "curses.h" 44 #include "curses_private.h" 45 46 47 /* 48 * initscr -- 49 * Initialize the current and standard screen. 50 */ 51 WINDOW * 52 initscr(void) 53 { 54 const char *sp; 55 56 #ifdef DEBUG 57 __CTRACE(__CTRACE_INIT, "initscr\n"); 58 #endif 59 60 /* 61 * If My_term is set, or can't find a terminal in the environment, 62 * use Def_term. 63 */ 64 if (My_term || (sp = getenv("TERM")) == NULL) 65 sp = Def_term; 66 67 /* LINTED const castaway; newterm does not modify sp! */ 68 if ((_cursesi_screen = newterm((char *) sp, stdout, stdin)) == NULL) 69 return NULL; 70 71 set_term(_cursesi_screen); 72 wrefresh(curscr); 73 __ripofftouch(_cursesi_screen); 74 75 return stdscr; 76 } 77