2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 static char sccsid[] = "@(#)display.c 8.1 (Berkeley) 6/6/93";
38 static const char rcsid[] =
39 "$FreeBSD: src/usr.bin/talk/display.c,v 1.7 1999/08/28 01:06:11 peter Exp $";
43 * The window 'manager', initializes curses and handles the actual
53 int curses_initialized = 0;
56 * max HAS to be a function, it is called with
57 * a argument of the form --foo at least once.
64 return (a > b ? a : b);
68 * Display some text on somebody's window, processing some control
69 * characters while we are at it.
72 display(win, text, size)
80 for (i = 0; i < size; i++) {
81 if (*text == '\n' || *text == '\r') {
82 waddch(win->x_win, '\n');
83 getyx(win->x_win, win->x_line, win->x_col);
88 if ( *text == win->cerase
89 || *text == 010 /* BS */
90 || *text == 0177 /* DEL */
92 wmove(win->x_win, win->x_line, max(--win->x_col, 0));
93 getyx(win->x_win, win->x_line, win->x_col);
94 waddch(win->x_win, ' ');
95 wmove(win->x_win, win->x_line, win->x_col);
96 getyx(win->x_win, win->x_line, win->x_col);
101 * On word erase search backwards until we find
102 * the beginning of a word or the beginning of
105 if ( *text == win->werase
106 || *text == 027 /* ^W */
108 int endcol, xcol, i, c;
113 c = readwin(win->x_win, win->x_line, xcol);
119 c = readwin(win->x_win, win->x_line, xcol);
124 wmove(win->x_win, win->x_line, xcol + 1);
125 for (i = xcol + 1; i < endcol; i++)
126 waddch(win->x_win, ' ');
127 wmove(win->x_win, win->x_line, xcol + 1);
128 getyx(win->x_win, win->x_line, win->x_col);
133 if ( *text == win->kill
134 || *text == 025 /* ^U */
136 wmove(win->x_win, win->x_line, 0);
137 wclrtoeol(win->x_win);
138 getyx(win->x_win, win->x_line, win->x_col);
149 write(STDOUT_FILENO, text, 1);
153 if (!isprint((unsigned char)*text) && *text != '\t') {
154 waddch(win->x_win, '^');
155 getyx(win->x_win, win->x_line, win->x_col);
156 cch = (*text & 63) + 64;
157 waddch(win->x_win, cch);
159 waddch(win->x_win, (unsigned char)*text);
160 getyx(win->x_win, win->x_line, win->x_col);
163 wrefresh(win->x_win);
167 * Read the character at the indicated position in win
170 readwin(win, line, col)
178 getyx(win, oldline, oldcol);
179 wmove(win, line, col);
181 wmove(win, oldline, oldcol);