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 /* Copyright (c) 1988 AT&T */
23*0Sstevel@tonic-gate /* All Rights Reserved */
24*0Sstevel@tonic-gate
25*0Sstevel@tonic-gate
26*0Sstevel@tonic-gate /*
27*0Sstevel@tonic-gate * Copyright (c) 1997, by Sun Microsystems, Inc.
28*0Sstevel@tonic-gate * All rights reserved.
29*0Sstevel@tonic-gate */
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
32*0Sstevel@tonic-gate
33*0Sstevel@tonic-gate /*LINTLIBRARY*/
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate #include <sys/types.h>
36*0Sstevel@tonic-gate #include "curses_inc.h"
37*0Sstevel@tonic-gate
38*0Sstevel@tonic-gate /*
39*0Sstevel@tonic-gate * Shift right an interval of characters
40*0Sstevel@tonic-gate */
41*0Sstevel@tonic-gate
42*0Sstevel@tonic-gate int
_mbinsshift(WINDOW * win,int len)43*0Sstevel@tonic-gate _mbinsshift(WINDOW *win, int len)
44*0Sstevel@tonic-gate {
45*0Sstevel@tonic-gate int x, y, maxx, mv;
46*0Sstevel@tonic-gate chtype *wcp, *wp, *ep;
47*0Sstevel@tonic-gate
48*0Sstevel@tonic-gate y = win->_cury;
49*0Sstevel@tonic-gate x = win->_curx;
50*0Sstevel@tonic-gate maxx = win->_maxx;
51*0Sstevel@tonic-gate wcp = win->_y[y];
52*0Sstevel@tonic-gate
53*0Sstevel@tonic-gate /* ASSERT(!ISCBIT(wcp[x])); */
54*0Sstevel@tonic-gate
55*0Sstevel@tonic-gate /* shift up to a whole character */
56*0Sstevel@tonic-gate if (_scrmax > 1) {
57*0Sstevel@tonic-gate wp = wcp + maxx - 1;
58*0Sstevel@tonic-gate if (ISMBIT(*wp)) {
59*0Sstevel@tonic-gate reg chtype rb;
60*0Sstevel@tonic-gate
61*0Sstevel@tonic-gate for (; wp >= wcp; --wp)
62*0Sstevel@tonic-gate if (!ISCBIT(*wp))
63*0Sstevel@tonic-gate break;
64*0Sstevel@tonic-gate if (wp < wcp)
65*0Sstevel@tonic-gate return (ERR);
66*0Sstevel@tonic-gate rb = RBYTE(*wp);
67*0Sstevel@tonic-gate if ((wp + _curs_scrwidth[TYPE(rb)]) > (wcp + maxx))
68*0Sstevel@tonic-gate /*LINTED*/
69*0Sstevel@tonic-gate maxx = (int)(wp - wcp);
70*0Sstevel@tonic-gate }
71*0Sstevel@tonic-gate }
72*0Sstevel@tonic-gate
73*0Sstevel@tonic-gate /* see if any data need to move */
74*0Sstevel@tonic-gate if ((mv = maxx - (x+len)) <= 0)
75*0Sstevel@tonic-gate return (OK);
76*0Sstevel@tonic-gate
77*0Sstevel@tonic-gate /* the end of the moved interval must be whole */
78*0Sstevel@tonic-gate if (ISCBIT(wcp[x + mv]))
79*0Sstevel@tonic-gate (void) _mbclrch(win, y, x + mv - 1);
80*0Sstevel@tonic-gate
81*0Sstevel@tonic-gate /* move data */
82*0Sstevel@tonic-gate ep = wcp + x + len;
83*0Sstevel@tonic-gate for (wp = wcp + maxx - 1; wp >= ep; --wp)
84*0Sstevel@tonic-gate *wp = *(wp - len);
85*0Sstevel@tonic-gate
86*0Sstevel@tonic-gate /* clear a possible partial multibyte character */
87*0Sstevel@tonic-gate if (ISMBIT(*wp))
88*0Sstevel@tonic-gate for (ep = wp; ep >= wcp; --ep) {
89*0Sstevel@tonic-gate mv = (int)(ISCBIT(*ep));
90*0Sstevel@tonic-gate *ep = win->_bkgd;
91*0Sstevel@tonic-gate if (!mv)
92*0Sstevel@tonic-gate break;
93*0Sstevel@tonic-gate }
94*0Sstevel@tonic-gate
95*0Sstevel@tonic-gate /* update the change structure */
96*0Sstevel@tonic-gate if (x < win->_firstch[y])
97*0Sstevel@tonic-gate /*LINTED*/
98*0Sstevel@tonic-gate win->_firstch[y] = (short)x;
99*0Sstevel@tonic-gate win->_lastch[y] = maxx - 1;
100*0Sstevel@tonic-gate
101*0Sstevel@tonic-gate return (OK);
102*0Sstevel@tonic-gate }
103