lib/libcurses/initscr.c

   1 /*      $NetBSD: initscr.c,v 1.28 2007/01/21 13:25:36 jdc 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 1.28 2007/01/21 13:25:36 jdc 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         __echoit = _cursesi_screen->echoit;
  72         __pfast = _cursesi_screen->pfast;
  73         __rawmode = _cursesi_screen->rawmode;
  74         __noqch = _cursesi_screen->noqch;
  75         COLS = _cursesi_screen->COLS;
  76         LINES = _cursesi_screen->LINES;
  77         COLORS = _cursesi_screen->COLORS;
  78         COLOR_PAIRS = _cursesi_screen->COLOR_PAIRS;
  79         __GT = _cursesi_screen->GT;
  80         __NONL = _cursesi_screen->NONL;
  81         __UPPERCASE = _cursesi_screen->UPPERCASE;
  82
  83         set_term(_cursesi_screen);
  84         wrefresh(curscr);
  85
  86         return (stdscr);
  87 }