1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate *
4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate * with the License.
8*7c478bd9Sstevel@tonic-gate *
9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate *
14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate *
20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate */
22*7c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
23*7c478bd9Sstevel@tonic-gate /* All Rights Reserved */
24*7c478bd9Sstevel@tonic-gate
25*7c478bd9Sstevel@tonic-gate
26*7c478bd9Sstevel@tonic-gate /*
27*7c478bd9Sstevel@tonic-gate * Copyright (c) 1997, by Sun Microsystems, Inc.
28*7c478bd9Sstevel@tonic-gate * All rights reserved.
29*7c478bd9Sstevel@tonic-gate */
30*7c478bd9Sstevel@tonic-gate
31*7c478bd9Sstevel@tonic-gate /*LINTLIBRARY*/
32*7c478bd9Sstevel@tonic-gate
33*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
34*7c478bd9Sstevel@tonic-gate #include "curses_inc.h"
35*7c478bd9Sstevel@tonic-gate
36*7c478bd9Sstevel@tonic-gate /*
37*7c478bd9Sstevel@tonic-gate * Shift right an interval of characters
38*7c478bd9Sstevel@tonic-gate */
39*7c478bd9Sstevel@tonic-gate
40*7c478bd9Sstevel@tonic-gate int
_mbinsshift(WINDOW * win,int len)41*7c478bd9Sstevel@tonic-gate _mbinsshift(WINDOW *win, int len)
42*7c478bd9Sstevel@tonic-gate {
43*7c478bd9Sstevel@tonic-gate int x, y, maxx, mv;
44*7c478bd9Sstevel@tonic-gate chtype *wcp, *wp, *ep;
45*7c478bd9Sstevel@tonic-gate
46*7c478bd9Sstevel@tonic-gate y = win->_cury;
47*7c478bd9Sstevel@tonic-gate x = win->_curx;
48*7c478bd9Sstevel@tonic-gate maxx = win->_maxx;
49*7c478bd9Sstevel@tonic-gate wcp = win->_y[y];
50*7c478bd9Sstevel@tonic-gate
51*7c478bd9Sstevel@tonic-gate /* ASSERT(!ISCBIT(wcp[x])); */
52*7c478bd9Sstevel@tonic-gate
53*7c478bd9Sstevel@tonic-gate /* shift up to a whole character */
54*7c478bd9Sstevel@tonic-gate if (_scrmax > 1) {
55*7c478bd9Sstevel@tonic-gate wp = wcp + maxx - 1;
56*7c478bd9Sstevel@tonic-gate if (ISMBIT(*wp)) {
57*7c478bd9Sstevel@tonic-gate reg chtype rb;
58*7c478bd9Sstevel@tonic-gate
59*7c478bd9Sstevel@tonic-gate for (; wp >= wcp; --wp)
60*7c478bd9Sstevel@tonic-gate if (!ISCBIT(*wp))
61*7c478bd9Sstevel@tonic-gate break;
62*7c478bd9Sstevel@tonic-gate if (wp < wcp)
63*7c478bd9Sstevel@tonic-gate return (ERR);
64*7c478bd9Sstevel@tonic-gate rb = RBYTE(*wp);
65*7c478bd9Sstevel@tonic-gate if ((wp + _curs_scrwidth[TYPE(rb)]) > (wcp + maxx))
66*7c478bd9Sstevel@tonic-gate /*LINTED*/
67*7c478bd9Sstevel@tonic-gate maxx = (int)(wp - wcp);
68*7c478bd9Sstevel@tonic-gate }
69*7c478bd9Sstevel@tonic-gate }
70*7c478bd9Sstevel@tonic-gate
71*7c478bd9Sstevel@tonic-gate /* see if any data need to move */
72*7c478bd9Sstevel@tonic-gate if ((mv = maxx - (x+len)) <= 0)
73*7c478bd9Sstevel@tonic-gate return (OK);
74*7c478bd9Sstevel@tonic-gate
75*7c478bd9Sstevel@tonic-gate /* the end of the moved interval must be whole */
76*7c478bd9Sstevel@tonic-gate if (ISCBIT(wcp[x + mv]))
77*7c478bd9Sstevel@tonic-gate (void) _mbclrch(win, y, x + mv - 1);
78*7c478bd9Sstevel@tonic-gate
79*7c478bd9Sstevel@tonic-gate /* move data */
80*7c478bd9Sstevel@tonic-gate ep = wcp + x + len;
81*7c478bd9Sstevel@tonic-gate for (wp = wcp + maxx - 1; wp >= ep; --wp)
82*7c478bd9Sstevel@tonic-gate *wp = *(wp - len);
83*7c478bd9Sstevel@tonic-gate
84*7c478bd9Sstevel@tonic-gate /* clear a possible partial multibyte character */
85*7c478bd9Sstevel@tonic-gate if (ISMBIT(*wp))
86*7c478bd9Sstevel@tonic-gate for (ep = wp; ep >= wcp; --ep) {
87*7c478bd9Sstevel@tonic-gate mv = (int)(ISCBIT(*ep));
88*7c478bd9Sstevel@tonic-gate *ep = win->_bkgd;
89*7c478bd9Sstevel@tonic-gate if (!mv)
90*7c478bd9Sstevel@tonic-gate break;
91*7c478bd9Sstevel@tonic-gate }
92*7c478bd9Sstevel@tonic-gate
93*7c478bd9Sstevel@tonic-gate /* update the change structure */
94*7c478bd9Sstevel@tonic-gate if (x < win->_firstch[y])
95*7c478bd9Sstevel@tonic-gate /*LINTED*/
96*7c478bd9Sstevel@tonic-gate win->_firstch[y] = (short)x;
97*7c478bd9Sstevel@tonic-gate win->_lastch[y] = maxx - 1;
98*7c478bd9Sstevel@tonic-gate
99*7c478bd9Sstevel@tonic-gate return (OK);
100*7c478bd9Sstevel@tonic-gate }
101