xref: /illumos-gate/usr/src/lib/libcurses/screen/restart.c (revision b02947bf393d39f68e6c7fa8ccb98688f7f9c407)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1988 AT&T	*/
28 /*	  All Rights Reserved	*/
29 
30 /*
31  * University Copyright- Copyright (c) 1982, 1986, 1988
32  * The Regents of the University of California
33  * All Rights Reserved
34  *
35  * University Acknowledgment- Portions of this document are derived from
36  * software developed by the University of California, Berkeley, and its
37  * contributors.
38  */
39 
40 /*LINTLIBRARY*/
41 
42 #include	<sys/types.h>
43 #include	"curses_inc.h"
44 
45 /*
46  * This is useful after saving/restoring memory from a file (e.g. as
47  * in a rogue save game).  It assumes that the modes and windows are
48  * as wanted by the user, but the terminal type and baud rate may
49  * have changed.
50  */
51 
52 extern	char	_called_before;
53 
54 int
55 /* The next line causes a lint warning because errret is not used */
56 restartterm(char *term, int filenum, int *errret)
57 /* int	filenum - This is a UNIX file descriptor, not a stdio ptr. */
58 {
59 	int	saveecho = SP->fl_echoit;
60 	int	savecbreak = cur_term->_fl_rawmode;
61 	int	savenl;
62 
63 #ifdef	SYSV
64 	savenl = PROGTTYS.c_iflag & ONLCR;
65 #else	/* SYSV */
66 	savenl = PROGTTY.sg_flags & CRMOD;
67 #endif	/* SYSV */
68 
69 	_called_before = 0;
70 	(void) setupterm(term, filenum, (int *) 0);
71 
72 	/* Restore curses settable flags, leaving other stuff alone. */
73 	SP->fl_echoit = saveecho;
74 
75 	(void) nocbreak();
76 	(void) noraw();
77 	if (savecbreak == 1)
78 		(void) cbreak();
79 	else
80 		if (savecbreak == 2)
81 			(void) raw();
82 
83 	if (savenl)
84 		(void) nl();
85 	else
86 		(void) nonl();
87 
88 	(void) reset_prog_mode();
89 
90 	LINES = SP->lsize;
91 	COLS = columns;
92 	return (OK);
93 }
94