1 /* $NetBSD: insch.c,v 1.22 2009/07/22 16:57:15 roy Exp $ */
2
3 /*
4 * Copyright (c) 1981, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 *
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.
18 *
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.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)insch.c 8.2 (Berkeley) 5/4/94";
36 #else
37 __RCSID("$NetBSD: insch.c,v 1.22 2009/07/22 16:57:15 roy Exp $");
38 #endif
39 #endif /* not lint */
40
41 #include <string.h>
42 #include <stdlib.h>
43
44 #include "curses.h"
45 #include "curses_private.h"
46
47 #ifndef _CURSES_USE_MACROS
48
49 /*
50 * insch --
51 * Do an insert-char on the line, leaving (cury, curx) unchanged.
52 */
53 int
insch(chtype ch)54 insch(chtype ch)
55 {
56 return winsch(stdscr, ch);
57 }
58
59 /*
60 * mvinsch --
61 * Do an insert-char on the line at (y, x).
62 */
63 int
mvinsch(int y,int x,chtype ch)64 mvinsch(int y, int x, chtype ch)
65 {
66 return mvwinsch(stdscr, y, x, ch);
67 }
68
69 /*
70 * mvwinsch --
71 * Do an insert-char on the line at (y, x) in the given window.
72 */
73 int
mvwinsch(WINDOW * win,int y,int x,chtype ch)74 mvwinsch(WINDOW *win, int y, int x, chtype ch)
75 {
76 if (wmove(win, y, x) == ERR)
77 return ERR;
78
79 return winsch(stdscr, ch);
80 }
81
82 #endif
83
84 /*
85 * winsch --
86 * Do an insert-char on the line, leaving (cury, curx) unchanged.
87 */
88 int
winsch(WINDOW * win,chtype ch)89 winsch(WINDOW *win, chtype ch)
90 {
91
92 __LDATA *end, *temp1, *temp2;
93 attr_t attr;
94
95 if (__using_color)
96 attr = win->battr & __COLOR;
97 else
98 attr = 0;
99 end = &win->alines[win->cury]->line[win->curx];
100 temp1 = &win->alines[win->cury]->line[win->maxx - 1];
101 temp2 = temp1 - 1;
102 while (temp1 > end) {
103 (void) memcpy(temp1, temp2, sizeof(__LDATA));
104 temp1--, temp2--;
105 }
106 temp1->ch = (wchar_t) ch & __CHARTEXT;
107 if (temp1->ch == ' ')
108 temp1->ch = win->bch;
109 temp1->attr = (attr_t) ch & __ATTRIBUTES;
110 if (temp1->attr & __COLOR)
111 temp1->attr |= (win->battr & ~__COLOR);
112 else
113 temp1->attr |= win->battr;
114 #ifdef HAVE_WCHAR
115 if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR)
116 return ERR;
117 SET_WCOL(*temp1, 1);
118 #endif /* HAVE_WCHAR */
119 __touchline(win, (int) win->cury, (int) win->curx, (int) win->maxx - 1);
120 if (win->cury == LINES - 1 &&
121 (win->alines[LINES - 1]->line[COLS - 1].ch != ' ' ||
122 win->alines[LINES - 1]->line[COLS - 1].attr != attr)) {
123 if (win->flags & __SCROLLOK) {
124 wrefresh(win);
125 scroll(win);
126 win->cury--;
127 } else
128 return (ERR);
129 }
130 return (OK);
131 }
132