restarttrm.c

<B>Digital的Unix操作系统VAX 4.2源码</B>

#ifndef lint
static char *sccsid = "@(#)restarttrm.c	4.1	(ULTRIX)	7/2/90";
#endif lint


/************************************************************************
 *									*
 *			Copyright (c) 1988, 1990 by			*
 *		Digital Equipment Corporation, Maynard, MA		*
 *			All rights reserved.				*
 *									*
 *   This software is furnished under a license and may be used and	*
 *   copied  only  in accordance with the terms of such license and	*
 *   with the  inclusion  of  the  above  copyright  notice.   This	*
 *   software  or  any  other copies thereof may not be provided or	*
 *   otherwise made available to any other person.  No title to and	*
 *   ownership of the software is hereby transferred.			*
 *									*
 *   This software is  derived  from  software  received  from  the	*
 *   University    of   California,   Berkeley,   and   from   Bell	*
 *   Laboratories.  Use, duplication, or disclosure is  subject  to	*
 *   restrictions  under  license  agreements  with  University  of	*
 *   California and with AT&T.						*
 *									*
 *   The information in this software is subject to change  without	*
 *   notice  and should not be construed as a commitment by Digital	*
 *   Equipment Corporation.						*
 *									*
 *   Digital assumes no responsibility for the use  or  reliability	*
 *   of its software on equipment which is not supplied by Digital.	*
 *									*
 ************************************************************************/
 
/*
 * Modification History
 *
 * 02/07/90 GWS	replaced sgttyb / tty(4)-style terminal I/O with termio(4)-
 *		 style terminal I/O.  The replacement code is the formerly
 *		 conditionalized "USG" code.
 *
 */

#include "curses.ext"
#include "../local/uparm.h"

extern	struct term *cur_term;

/*
 * This is useful after saving/restoring memory from a file (e.g. as
 * in a rogue save game).  It assumes that the modes and windows are
 * as wanted by the user, but the terminal type and baud rate may
 * have changed.
 */
restartterm(term, filenum, errret)
char *term;
int filenum;	/* This is a UNIX file descriptor, not a stdio ptr. */
int *errret;
{
	int saveecho = SP->fl_echoit;
	int savecbreak = SP->fl_rawmode;
	int saveraw;
	int savenl;

	saveraw = (cur_term->Nttyb).c_cc[VINTR] == 0377;
	savenl = (cur_term->Nttyb).c_iflag & ICRNL;

	setupterm(term, filenum, errret);

	/*
	 * Restore curses settable flags, leaving other stuff alone.
	 */
	if (saveecho)
		echo();
	else
		noecho();

	if (savecbreak)
		cbreak(), noraw();
	else if (saveraw)
		nocbreak(), raw();
	else
		nocbreak(), noraw();
	
	if (savenl)
		nl();
	else
		nonl();

	reset_prog_mode();

	LINES = lines;
	COLS = columns;
}