xref: /onnv-gate/usr/src/lib/libcurses/screen/getwin.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24*0Sstevel@tonic-gate  * Use is subject to license terms.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate /*	Copyright (c) 1988 AT&T	*/
28*0Sstevel@tonic-gate /*	  All Rights Reserved	*/
29*0Sstevel@tonic-gate 
30*0Sstevel@tonic-gate /*
31*0Sstevel@tonic-gate  * University Copyright- Copyright (c) 1982, 1986, 1988
32*0Sstevel@tonic-gate  * The Regents of the University of California
33*0Sstevel@tonic-gate  * All Rights Reserved
34*0Sstevel@tonic-gate  *
35*0Sstevel@tonic-gate  * University Acknowledgment- Portions of this document are derived from
36*0Sstevel@tonic-gate  * software developed by the University of California, Berkeley, and its
37*0Sstevel@tonic-gate  * contributors.
38*0Sstevel@tonic-gate  */
39*0Sstevel@tonic-gate 
40*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
41*0Sstevel@tonic-gate 
42*0Sstevel@tonic-gate /*LINTLIBRARY*/
43*0Sstevel@tonic-gate 
44*0Sstevel@tonic-gate #include	<sys/types.h>
45*0Sstevel@tonic-gate #include	"curses_inc.h"
46*0Sstevel@tonic-gate 
47*0Sstevel@tonic-gate #define		SEPARATE_READ	6
48*0Sstevel@tonic-gate 
49*0Sstevel@tonic-gate /* Read a window that was stored by putwin. */
50*0Sstevel@tonic-gate 
51*0Sstevel@tonic-gate WINDOW	*
getwin(FILE * filep)52*0Sstevel@tonic-gate getwin(FILE *filep)
53*0Sstevel@tonic-gate {
54*0Sstevel@tonic-gate 	short		*save_fch, win_nums[SEPARATE_READ], maxy, maxx, nelt;
55*0Sstevel@tonic-gate 	WINDOW		*win = NULL;
56*0Sstevel@tonic-gate 	chtype		**ecp, **wcp;
57*0Sstevel@tonic-gate 
58*0Sstevel@tonic-gate 	/* read everything from _cury to _bkgd inclusive */
59*0Sstevel@tonic-gate 
60*0Sstevel@tonic-gate 	nelt = sizeof (WINDOW) - sizeof (win->_y) - sizeof (win->_parent) -
61*0Sstevel@tonic-gate 	    sizeof (win->_parx) - sizeof (win->_pary) -
62*0Sstevel@tonic-gate 	    sizeof (win->_ndescs) - sizeof (win->_delay) -
63*0Sstevel@tonic-gate 	    (SEPARATE_READ * sizeof (short));
64*0Sstevel@tonic-gate 
65*0Sstevel@tonic-gate 	if ((fread((char *) win_nums, sizeof (short), SEPARATE_READ, filep) !=
66*0Sstevel@tonic-gate 	    SEPARATE_READ) || ((win = _makenew(maxy = win_nums[2], maxx =
67*0Sstevel@tonic-gate 	    win_nums[3], win_nums[4], win_nums[5])) == NULL)) {
68*0Sstevel@tonic-gate 		goto err;
69*0Sstevel@tonic-gate 	}
70*0Sstevel@tonic-gate 
71*0Sstevel@tonic-gate 	if (_image(win) == ERR) {
72*0Sstevel@tonic-gate 		win = (WINDOW *) NULL;
73*0Sstevel@tonic-gate 		goto err;
74*0Sstevel@tonic-gate 	}
75*0Sstevel@tonic-gate 	save_fch = win->_firstch;
76*0Sstevel@tonic-gate 
77*0Sstevel@tonic-gate 	if (fread(&(win->_flags), 1, nelt, filep) != nelt)
78*0Sstevel@tonic-gate 		goto err;
79*0Sstevel@tonic-gate 
80*0Sstevel@tonic-gate 	win->_firstch = save_fch;
81*0Sstevel@tonic-gate 	win->_lastch = save_fch + maxy;
82*0Sstevel@tonic-gate 
83*0Sstevel@tonic-gate 	/* read the image */
84*0Sstevel@tonic-gate 	wcp = win->_y;
85*0Sstevel@tonic-gate 	ecp = wcp + maxy;
86*0Sstevel@tonic-gate 
87*0Sstevel@tonic-gate 	while (wcp < ecp)
88*0Sstevel@tonic-gate 		if (fread((char *) *wcp++, sizeof (chtype), maxx, filep) !=
89*0Sstevel@tonic-gate 		    maxx) {
90*0Sstevel@tonic-gate err :
91*0Sstevel@tonic-gate 			if (win != NULL)
92*0Sstevel@tonic-gate 				(void) delwin(win);
93*0Sstevel@tonic-gate 			return ((WINDOW *) NULL);
94*0Sstevel@tonic-gate 	}
95*0Sstevel@tonic-gate 
96*0Sstevel@tonic-gate 	win->_cury = win_nums[0];
97*0Sstevel@tonic-gate 	win->_curx = win_nums[1];
98*0Sstevel@tonic-gate 	win->_use_idl = win->_use_keypad = FALSE;
99*0Sstevel@tonic-gate 
100*0Sstevel@tonic-gate 	return (win);
101*0Sstevel@tonic-gate }
102