usr/src/ucblib/libcurses/initscr.c

   1 /*
   2  * Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
   3  * Use is subject to license terms.
   4  */
   5
   6 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
   7 /*        All Rights Reserved   */
   8
   9 /*
  10  * Copyright (c) 1980 Regents of the University of California.
  11  * All rights reserved.  The Berkeley software License Agreement
  12  * specifies the terms and conditions for redistribution.
  13  */
  14
  15 #pragma ident   "%Z%%M% %I%     %E% SMI"
  16
  17 /*LINTLIBRARY*/
  18
  19 #ifndef lint
  20 static char
  21 sccsid[] = "@(#)initscr.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
  22 #endif /* not lint */
  23
  24 #include        "curses.ext"
  25 #include        <term.h>
  26 #include        <stdlib.h>
  27 #include        <signal.h>
  28
  29 /*
  30  *      This routine initializes the current and standard screen.
  31  */
  32
  33 WINDOW *
  34 initscr(void)
  35 {
  36         char    *sp;
  37
  38 #ifdef DEBUG
  39         fprintf(outf, "INITSCR()\n");
  40 #endif
  41         if (My_term)
  42                 (void) setterm(Def_term);
  43         else {
  44                 (void) gettmode();
  45                 if ((sp = getenv("TERM")) == NULL)
  46                         sp = Def_term;
  47                 (void) setterm(sp);
  48 #ifdef DEBUG
  49                 fprintf(outf, "INITSCR: term = %s\n", sp);
  50 #endif
  51         }
  52         (void) _puts(TI);
  53         (void) _puts(VS);
  54 #ifdef SIGTSTP
  55         (void) signal(SIGTSTP, (void(*)(int))tstp);
  56 #endif
  57         if (curscr != NULL) {
  58 #ifdef DEBUG
  59                 fprintf(outf, "INITSCR: curscr = 0%o\n", curscr);
  60 #endif
  61                 (void) delwin(curscr);
  62         }
  63 #ifdef DEBUG
  64         fprintf(outf, "LINES = %d, COLS = %d\n", LINES, COLS);
  65 #endif
  66         if ((curscr = newwin(LINES, COLS, 0, 0)) == ERR)
  67                 return (ERR);
  68         clearok(curscr, TRUE);
  69         curscr->_flags &= ~_FULLLINE;
  70         if (stdscr != NULL) {
  71 #ifdef DEBUG
  72                 fprintf(outf, "INITSCR: stdscr = 0%o\n", stdscr);
  73 #endif
  74                 (void) delwin(stdscr);
  75         }
  76         stdscr = newwin(LINES, COLS, 0, 0);
  77         return (stdscr);
  78 }