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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
35 static const char sccsid[] = "@(#)display.c 8.1 (Berkeley) 6/6/93";
39 * The window 'manager', initializes curses and handles the actual
51 int curses_initialized = 0;
54 * max HAS to be a function, it is called with
55 * an argument of the form --foo at least once.
61 return (a > b ? a : b);
65 * Display some text on somebody's window, processing some control
66 * characters while we are at it.
69 display(xwin_t *win, char *text, int size)
74 for (i = 0; i < size; i++) {
75 if (*text == '\n' || *text == '\r') {
76 waddch(win->x_win, '\n');
77 getyx(win->x_win, win->x_line, win->x_col);
81 if (*text == 004 && win == &my_win) {
82 /* control-D clears the screen */
84 getyx(my_win.x_win, my_win.x_line, my_win.x_col);
85 wrefresh(my_win.x_win);
86 werase(his_win.x_win);
87 getyx(his_win.x_win, his_win.x_line, his_win.x_col);
88 wrefresh(his_win.x_win);
94 if ( *text == win->cerase
95 || *text == 010 /* BS */
96 || *text == 0177 /* DEL */
98 wmove(win->x_win, win->x_line, max(--win->x_col, 0));
99 getyx(win->x_win, win->x_line, win->x_col);
100 waddch(win->x_win, ' ');
101 wmove(win->x_win, win->x_line, win->x_col);
102 getyx(win->x_win, win->x_line, win->x_col);
107 * On word erase search backwards until we find
108 * the beginning of a word or the beginning of
111 if ( *text == win->werase
112 || *text == 027 /* ^W */
114 int endcol, xcol, ii, c;
119 c = readwin(win->x_win, win->x_line, xcol);
125 c = readwin(win->x_win, win->x_line, xcol);
130 wmove(win->x_win, win->x_line, xcol + 1);
131 for (ii = xcol + 1; ii < endcol; ii++)
132 waddch(win->x_win, ' ');
133 wmove(win->x_win, win->x_line, xcol + 1);
134 getyx(win->x_win, win->x_line, win->x_col);
139 if ( *text == win->kill
140 || *text == 025 /* ^U */
142 wmove(win->x_win, win->x_line, 0);
143 wclrtoeol(win->x_win);
144 getyx(win->x_win, win->x_line, win->x_col);
155 write(STDOUT_FILENO, text, 1);
159 if (!isprint((unsigned char)*text) && *text != '\t') {
160 waddch(win->x_win, '^');
161 getyx(win->x_win, win->x_line, win->x_col);
162 cch = (*text & 63) + 64;
163 waddch(win->x_win, cch);
165 waddch(win->x_win, (unsigned char)*text);
166 getyx(win->x_win, win->x_line, win->x_col);
169 wrefresh(win->x_win);
173 * Read the character at the indicated position in win
176 readwin(WINDOW *win, int line, int col)
181 getyx(win, oldline, oldcol);
182 wmove(win, line, col);
184 wmove(win, oldline, oldcol);