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 /*LINTLIBRARY*/
41
42 #include <sys/types.h>
43 #include "curses_inc.h"
44
45 /*
46 * This routine performs a delete-char on the line,
47 * leaving (_cury, _curx) unchanged.
48 */
49
50 int
wdelch(WINDOW * win)51 wdelch(WINDOW *win)
52 {
53 chtype *temp1, *temp2;
54 chtype *end;
55 int cury = win->_cury;
56 short curx = win->_curx;
57 chtype *cp;
58 int s;
59
60 end = &win->_y[cury][win->_maxx - 1];
61 temp2 = &win->_y[cury][curx + 1];
62 temp1 = temp2 - 1;
63
64 s = 1;
65 win->_nbyte = -1;
66 if (_scrmax > 1) {
67 if (ISMBIT(*temp1)) {
68 win->_insmode = TRUE;
69 if (_mbvalid(win) == ERR)
70 return (ERR);
71 curx = win->_curx;
72 temp1 = &win->_y[cury][curx];
73 }
74 if (ISMBIT(*end)) {
75 for (cp = end; cp >= temp1; --cp)
76 if (!ISCBIT(*cp))
77 break;
78 if (cp + _curs_scrwidth[TYPE(*cp)] > end+1)
79 end = cp - 1;
80 }
81 if (ISMBIT(*temp1))
82 s = _curs_scrwidth[TYPE(RBYTE(*temp1))];
83 end -= s - 1;
84 temp2 = &win->_y[cury][curx+s];
85 }
86
87 while (temp1 < end)
88 *temp1++ = *temp2++;
89
90 while (s--)
91 *temp1++ = win->_bkgd;
92
93 #ifdef _VR3_COMPAT_CODE
94 if (_y16update)
95 (*_y16update)(win, 1, win->_maxx - curx, cury, curx);
96 #endif /* _VR3_COMPAT_CODE */
97
98 win->_lastch[cury] = win->_maxx - 1;
99 if (win->_firstch[cury] > curx)
100 win->_firstch[cury] = curx;
101
102 win->_flags |= _WINCHANGED;
103
104 if (win->_sync)
105 wsyncup(win);
106
107 return (win->_immed ? wrefresh(win) : OK);
108 }
109