xref: /illumos-gate/usr/src/lib/libcurses/screen/mbinch.c (revision 9b9d39d2a32ff806d2431dbcc50968ef1e6d46b2)
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 /*  Copyright (c) 1988 AT&T */
23 /*    All Rights Reserved   */
24 
25 
26 /*
27  *      Copyright (c) 1997, by Sun Microsystems, Inc.
28  *      All rights reserved.
29  */
30 
31 /*LINTLIBRARY*/
32 
33 #include	<sys/types.h>
34 #include	"curses_inc.h"
35 
36 /*
37  *	Get the(y, x) character of a window and
38  *	return it in a 0-terminated string.
39  */
40 char
41 *wmbinch(WINDOW *win, int y, int x)
42 {
43 	short		savx, savy;
44 	int		k;
45 	chtype		*wp, *ep, wc;
46 	static char	rs[CSMAX + 1];
47 
48 	k = 0;
49 	savx = win->_curx;
50 	savy = win->_cury;
51 
52 	if (wmbmove(win, y, x) == ERR)
53 		goto done;
54 	wp = win->_y[win->_cury] + win->_curx;
55 	wc = RBYTE(*wp);
56 	ep = wp + _curs_scrwidth[TYPE(wc & 0377)];
57 
58 	for (; wp < ep; ++wp) {
59 		if ((wc = RBYTE(*wp)) == MBIT)
60 			break;
61 		/*LINTED*/
62 		rs[k++] = (char)wc;
63 		if ((wc = LBYTE(*wp)|MBIT) == MBIT)
64 			break;
65 		/*LINTED*/
66 		rs[k++] = (char)wc;
67 	}
68 done :
69 	win->_curx = savx;
70 	win->_cury = savy;
71 	rs[k] = '\0';
72 	return (rs);
73 }
74