Boot-to-ramdisk image generation scripts
[minix3.git] / lib / libcurses / delch.c
blobc41d1bd615d708cb0279d4fc5e4d1508b28e422a
1 /* $NetBSD: delch.c,v 1.22 2009/07/22 16:57:14 roy Exp $ */
3 /*
4 * Copyright (c) 1981, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)delch.c 8.2 (Berkeley) 5/4/94";
36 #else
37 __RCSID("$NetBSD: delch.c,v 1.22 2009/07/22 16:57:14 roy Exp $");
38 #endif
39 #endif /* not lint */
41 #include <string.h>
42 #include <stdlib.h>
44 #include "curses.h"
45 #include "curses_private.h"
47 #ifndef _CURSES_USE_MACROS
49 * delch --
50 * Do a delete-char on the line, leaving (cury, curx) unchanged.
52 int
53 delch(void)
55 return wdelch(stdscr);
59 * mvdelch --
60 * Do a delete-char on the line at (y, x) on stdscr.
62 int
63 mvdelch(int y, int x)
65 return mvwdelch(stdscr, y, x);
69 * mvwdelch --
70 * Do a delete-char on the line at (y, x) of the given window.
72 int
73 mvwdelch(WINDOW *win, int y, int x)
75 if (wmove(win, y, x) == ERR)
76 return ERR;
78 return wdelch(win);
81 #endif
84 * wdelch --
85 * Do a delete-char on the line, leaving (cury, curx) unchanged.
87 int
88 wdelch(WINDOW *win)
90 __LDATA *end, *temp1, *temp2;
92 #ifndef HAVE_WCHAR
93 end = &win->alines[win->cury]->line[win->maxx - 1];
94 temp1 = &win->alines[win->cury]->line[win->curx];
95 temp2 = temp1 + 1;
96 while (temp1 < end) {
97 (void) memcpy(temp1, temp2, sizeof(__LDATA));
98 temp1++, temp2++;
100 temp1->ch = win->bch;
101 if (__using_color && win != curscr)
102 temp1->attr = win->battr & __COLOR;
103 else
104 temp1->attr = 0;
105 __touchline(win, (int) win->cury, (int) win->curx, (int) win->maxx - 1);
106 return (OK);
107 #else
108 int cw, sx;
109 nschar_t *np, *tnp;
111 end = &win->alines[win->cury]->line[win->maxx - 1];
112 sx = win->curx;
113 temp1 = &win->alines[win->cury]->line[win->curx];
114 cw = WCOL( *temp1 );
115 if ( cw < 0 ) {
116 temp1 += cw;
117 sx += cw;
118 cw = WCOL( *temp1 );
120 np = temp1->nsp;
121 if (np) {
122 while ( np ) {
123 tnp = np->next;
124 free( np );
125 np = tnp;
127 temp1->nsp = NULL;
129 if ( sx + cw < win->maxx ) {
130 temp2 = temp1 + cw;
131 while ( temp1 < end - ( cw - 1 )) {
132 ( void )memcpy( temp1, temp2, sizeof( __LDATA ));
133 temp1++, temp2++;
136 while ( temp1 <= end ) {
137 temp1->ch = ( wchar_t )btowc(( int ) win->bch );
138 temp1->attr = 0;
139 if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR)
140 return ERR;
141 SET_WCOL(*temp1, 1);
142 temp1++;
144 __touchline(win, (int) win->cury, sx, (int) win->maxx - 1);
145 return (OK);
146 #endif /* HAVE_WCHAR */