mirror of https://github.com/GnoConsortium/gno.git
97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/*
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* Copyright (c) 1981, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)initscr.c 8.2 (Berkeley) 5/4/94";
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#endif /* not lint */
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#include <signal.h>
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#include <stdlib.h>
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#include "curses.h"
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/*
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* initscr --
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* Initialize the current and standard screen.
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*/
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WINDOW *
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initscr(void)
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{
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register char *sp;
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#ifdef DEBUG
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__CTRACE("initscr\n");
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#endif
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__echoit = 1;
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__pfast = __rawmode = __noqch = 0;
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if (gettmode() == ERR)
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return (NULL);
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/*
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* If My_term is set, or can't find a terminal in the environment,
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* use Def_term.
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*/
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if (My_term || (sp = getenv("TERM")) == NULL)
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sp = Def_term;
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if (setterm(sp) == ERR)
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return (NULL);
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/* Need either homing or cursor motion for refreshes */
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if (!HO && !CM)
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return (NULL);
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if (curscr != NULL)
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delwin(curscr);
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if ((curscr = newwin(LINES, COLS, 0, 0)) == ERR)
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return (NULL);
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clearok(curscr, 1);
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if (stdscr != NULL)
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delwin(stdscr);
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if ((stdscr = newwin(LINES, COLS, 0, 0)) == ERR) {
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delwin(curscr);
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return (NULL);
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}
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__set_stophandler();
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#ifdef DEBUG
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__CTRACE("initscr: LINES = %d, COLS = %d\n", LINES, COLS);
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#endif
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__startwin();
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return (stdscr);
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}
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