xref: /onnv-gate/usr/src/lib/libcurses/screen/winnstr.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  * Copy n chars in window win from current cursor position to end
49*0Sstevel@tonic-gate  * of window into char buffer str.  Return the number of chars copied.
50*0Sstevel@tonic-gate  */
51*0Sstevel@tonic-gate 
52*0Sstevel@tonic-gate int
winnstr(WINDOW * win,char * str,int ncols)53*0Sstevel@tonic-gate winnstr(WINDOW *win, char *str, int ncols)
54*0Sstevel@tonic-gate {
55*0Sstevel@tonic-gate 	int	counter = 0;
56*0Sstevel@tonic-gate 	int	cy = win->_cury;
57*0Sstevel@tonic-gate 	chtype	*ptr = &(win->_y[cy][win->_curx]),
58*0Sstevel@tonic-gate 		*pmax = &(win->_y[cy][win->_maxx]);
59*0Sstevel@tonic-gate 	chtype	wc;
60*0Sstevel@tonic-gate 	int	eucw, scrw, s;
61*0Sstevel@tonic-gate 
62*0Sstevel@tonic-gate 
63*0Sstevel@tonic-gate 	while (ISCBIT(*ptr))
64*0Sstevel@tonic-gate 		ptr--;
65*0Sstevel@tonic-gate 
66*0Sstevel@tonic-gate 	if (ncols < -1)
67*0Sstevel@tonic-gate 		ncols = MAXINT;
68*0Sstevel@tonic-gate 
69*0Sstevel@tonic-gate 	while (counter < ncols) {
70*0Sstevel@tonic-gate 		scrw = mbscrw((int) RBYTE(*ptr));
71*0Sstevel@tonic-gate 		eucw = mbeucw((int) RBYTE(*ptr));
72*0Sstevel@tonic-gate 		if (counter + eucw > ncols)
73*0Sstevel@tonic-gate 			break;
74*0Sstevel@tonic-gate 
75*0Sstevel@tonic-gate 		for (s = 0; s < scrw; s++, ptr++) {
76*0Sstevel@tonic-gate 			if ((wc = RBYTE(*ptr)) == MBIT)
77*0Sstevel@tonic-gate 				continue;
78*0Sstevel@tonic-gate 			/* LINTED */
79*0Sstevel@tonic-gate 			*str++ = (char) wc;
80*0Sstevel@tonic-gate 			counter++;
81*0Sstevel@tonic-gate 			if ((wc = LBYTE(*ptr) | MBIT) == MBIT)
82*0Sstevel@tonic-gate 				continue;
83*0Sstevel@tonic-gate 			/* LINTED */
84*0Sstevel@tonic-gate 			*str++ = (char) wc;
85*0Sstevel@tonic-gate 			counter++;
86*0Sstevel@tonic-gate 		}
87*0Sstevel@tonic-gate 
88*0Sstevel@tonic-gate 		if (ptr >= pmax) {
89*0Sstevel@tonic-gate 			if (++cy == win->_maxy)
90*0Sstevel@tonic-gate 				break;
91*0Sstevel@tonic-gate 
92*0Sstevel@tonic-gate 			ptr = &(win->_y[cy][0]);
93*0Sstevel@tonic-gate 			pmax = ptr + win->_maxx;
94*0Sstevel@tonic-gate 		}
95*0Sstevel@tonic-gate 	}
96*0Sstevel@tonic-gate 	if (counter < ncols)
97*0Sstevel@tonic-gate 		*str = '\0';
98*0Sstevel@tonic-gate 
99*0Sstevel@tonic-gate 	return (counter);
100*0Sstevel@tonic-gate }
101