xref: /titanic_44/usr/src/lib/libcurses/screen/waddchnstr.c (revision 6dfee4834394825da35b977ca71cdc965bc7b6a4)
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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
41 
42 /*LINTLIBRARY*/
43 
44 #include	<sys/types.h>
45 #include	"curses_inc.h"
46 
47 /*
48  * Add ncols worth of data to win, using string as input.
49  * Return the number of chtypes copied.
50  */
51 int
52 waddchnstr(WINDOW *win, chtype *string, int ncols)
53 {
54 	short		my_x = win->_curx;
55 	short		my_y = win->_cury;
56 	int		remcols;
57 	int		b;
58 	int		sw;
59 	int		ew;
60 
61 	if (ncols < 0) {
62 		remcols = win->_maxx - my_x;
63 		while (*string && remcols) {
64 			sw = mbscrw((int)(_CHAR(*string)));
65 			ew = mbeucw((int)(_CHAR(*string)));
66 			if (remcols < sw)
67 				break;
68 			for (b = 0; b < ew; b++) {
69 				if (waddch(win, *string++) == ERR)
70 					goto out;
71 			}
72 			remcols -= sw;
73 		}
74 	} else {
75 		remcols = win->_maxx - my_x;
76 		while ((*string) && (remcols > 0) && (ncols > 0)) {
77 			sw = mbscrw((int)(_CHAR(*string)));
78 			ew = mbeucw((int)(_CHAR(*string)));
79 			if ((remcols < sw) || (ncols < ew))
80 				break;
81 			for (b = 0; b < ew; b++) {
82 				if (waddch(win, *string++) == ERR)
83 					goto out;
84 			}
85 			remcols -= sw;
86 			ncols -= ew;
87 		}
88 	}
89 out:
90 	/* restore cursor position */
91 	win->_curx = my_x;
92 	win->_cury = my_y;
93 
94 	win->_flags |= _WINCHANGED;
95 
96 	/* sync with ancestor structures */
97 	if (win->_sync)
98 		wsyncup(win);
99 
100 	return (win->_immed ? wrefresh(win) : OK);
101 }
102