/*
 * Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
/*        All Rights Reserved   */

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

/*LINTLIBRARY*/

#ifndef lint
static char
sccsid[] = "@(#)initscr.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
#endif /* not lint */

#include        "curses.ext"
#include        <term.h>
#include        <stdlib.h>
#include        <signal.h>

/*
 *      This routine initializes the current and standard screen.
 */

WINDOW *
initscr(void)
{
        char    *sp;

#ifdef DEBUG
        fprintf(outf, "INITSCR()\n");
#endif
        if (My_term)
                (void) setterm(Def_term);
        else {
                (void) gettmode();
                if ((sp = getenv("TERM")) == NULL)
                        sp = Def_term;
                (void) setterm(sp);
#ifdef DEBUG
                fprintf(outf, "INITSCR: term = %s\n", sp);
#endif
        }
        (void) _puts(TI);
        (void) _puts(VS);
#ifdef SIGTSTP
        (void) signal(SIGTSTP, (void(*)(int))tstp);
#endif
        if (curscr != NULL) {
#ifdef DEBUG
                fprintf(outf, "INITSCR: curscr = 0%o\n", curscr);
#endif
                (void) delwin(curscr);
        }
#ifdef DEBUG
        fprintf(outf, "LINES = %d, COLS = %d\n", LINES, COLS);
#endif
        if ((curscr = newwin(LINES, COLS, 0, 0)) == ERR)
                return (ERR);
        clearok(curscr, TRUE);
        curscr->_flags &= ~_FULLLINE;
        if (stdscr != NULL) {
#ifdef DEBUG
                fprintf(outf, "INITSCR: stdscr = 0%o\n", stdscr);
#endif
                (void) delwin(stdscr);
        }
        stdscr = newwin(LINES, COLS, 0, 0);
        return (stdscr);
}