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initscr.c revision 1.2 
      1 /*
      2  * Copyright (c) 1981 Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 /*static char sccsid[] = "from: @(#)initscr.c	5.6 (Berkeley) 3/3/91";*/
     36 static char rcsid[] = "$Id: initscr.c,v 1.2 1993/08/01 18:35:37 mycroft Exp $";
     37 #endif /* not lint */
     38 
     39 # include	"curses.ext"
     40 # include	<signal.h>
     41 
     42 extern char	*getenv();
     43 
     44 /*
     45  *	This routine initializes the current and standard screen.
     46  *
     47  */
     48 WINDOW *
     49 initscr() {
     50 
     51 	reg char	*sp;
     52 	void		tstp();
     53 
     54 # ifdef DEBUG
     55 	fprintf(outf, "INITSCR()\n");
     56 # endif
     57 	if (My_term)
     58 		setterm(Def_term);
     59 	else {
     60 		gettmode();
     61 		if ((sp = getenv("TERM")) == NULL)
     62 			sp = Def_term;
     63 		setterm(sp);
     64 # ifdef DEBUG
     65 		fprintf(outf, "INITSCR: term = %s\n", sp);
     66 # endif
     67 	}
     68 	_puts(TI);
     69 	_puts(VS);
     70 # ifdef SIGTSTP
     71 	signal(SIGTSTP, tstp);
     72 # endif
     73 	if (curscr != NULL) {
     74 # ifdef DEBUG
     75 		fprintf(outf, "INITSCR: curscr = 0%o\n", curscr);
     76 # endif
     77 		delwin(curscr);
     78 	}
     79 # ifdef DEBUG
     80 	fprintf(outf, "LINES = %d, COLS = %d\n", LINES, COLS);
     81 # endif
     82 	if ((curscr = newwin(LINES, COLS, 0, 0)) == ERR)
     83 		return ERR;
     84 	clearok(curscr, TRUE);
     85 	curscr->_flags &= ~_FULLLINE;
     86 	if (stdscr != NULL) {
     87 # ifdef DEBUG
     88 		fprintf(outf, "INITSCR: stdscr = 0%o\n", stdscr);
     89 # endif
     90 		delwin(stdscr);
     91 	}
     92 	stdscr = newwin(LINES, COLS, 0, 0);
     93 	return stdscr;
     94 }
     95