xref: /onnv-gate/usr/src/lib/libcurses/screen/winchnstr.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 /*
48*0Sstevel@tonic-gate  * Read in ncols worth of data from window win and assign the
49*0Sstevel@tonic-gate  * chars to string. NULL terminate string upon completion.
50*0Sstevel@tonic-gate  * Return the number of chtypes copied.
51*0Sstevel@tonic-gate  */
52*0Sstevel@tonic-gate 
53*0Sstevel@tonic-gate int
winchnstr(WINDOW * win,chtype * string,int ncols)54*0Sstevel@tonic-gate winchnstr(WINDOW *win, chtype *string, int ncols)
55*0Sstevel@tonic-gate {
56*0Sstevel@tonic-gate 	chtype	*ptr = &(win->_y[win->_cury][win->_curx]);
57*0Sstevel@tonic-gate 	int	counter = 0;
58*0Sstevel@tonic-gate 	int	maxcols = win->_maxx - win->_curx;
59*0Sstevel@tonic-gate 	int	eucw, scrw, s;
60*0Sstevel@tonic-gate 	chtype	rawc, attr, wc;
61*0Sstevel@tonic-gate 
62*0Sstevel@tonic-gate 	if (ncols < 0)
63*0Sstevel@tonic-gate 		ncols = MAXINT;
64*0Sstevel@tonic-gate 
65*0Sstevel@tonic-gate 	while (ISCBIT(*ptr)) {
66*0Sstevel@tonic-gate 		ptr--;
67*0Sstevel@tonic-gate 		maxcols++;
68*0Sstevel@tonic-gate 	}
69*0Sstevel@tonic-gate 
70*0Sstevel@tonic-gate 	while ((counter < ncols) && maxcols > 0) {
71*0Sstevel@tonic-gate 		eucw = mbeucw((int) RBYTE(*ptr));
72*0Sstevel@tonic-gate 		scrw = mbscrw((int) RBYTE(*ptr));
73*0Sstevel@tonic-gate 
74*0Sstevel@tonic-gate 		if (counter + eucw > ncols)
75*0Sstevel@tonic-gate 			break;
76*0Sstevel@tonic-gate 		for (s = 0; s < scrw; s++, maxcols--, ptr++) {
77*0Sstevel@tonic-gate 			attr = _ATTR(*ptr);
78*0Sstevel@tonic-gate 			rawc = _CHAR(*ptr);
79*0Sstevel@tonic-gate 			if ((wc = RBYTE(rawc)) == MBIT)
80*0Sstevel@tonic-gate 				continue;
81*0Sstevel@tonic-gate 			*string++ = wc | attr;
82*0Sstevel@tonic-gate 			counter++;
83*0Sstevel@tonic-gate 			if ((wc = LBYTE(rawc) | MBIT) == MBIT)
84*0Sstevel@tonic-gate 				continue;
85*0Sstevel@tonic-gate 			*string++ = wc | attr;
86*0Sstevel@tonic-gate 			counter++;
87*0Sstevel@tonic-gate 		}
88*0Sstevel@tonic-gate 	}
89*0Sstevel@tonic-gate 	if (counter < ncols)
90*0Sstevel@tonic-gate 		*string = (chtype) 0;
91*0Sstevel@tonic-gate 	return (counter);
92*0Sstevel@tonic-gate }
93