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
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 static char sccsid[] = "@(#)io.c 8.1 (Berkeley) 6/6/93";
38 static const char rcsid[] =
43 * This file contains the I/O handling and the exchange of
44 * edit characters. This connection itself is established in
50 #include <sys/filio.h>
53 #define A_LONG_TIME 10000000
56 * The routine to do the actual talking
62 fd_set read_set, read_template;
66 message("Connection established");
67 write(STDOUT_FILENO, "\007\007\007", 3);
72 * Wait on both the other process (sockt_mask) and
73 * standard input ( STDIN_MASK )
75 FD_ZERO(&read_template);
76 FD_SET(sockt, &read_template);
77 FD_SET(fileno(stdin), &read_template);
79 read_set = read_template;
80 wait.tv_sec = A_LONG_TIME;
82 nb = select(32, &read_set, 0, 0, &wait);
85 read_set = read_template;
88 /* panic, we don't know what happened */
89 p_error("Unexpected error from select");
92 if (FD_ISSET(sockt, &read_set)) {
93 /* There is data on sockt */
94 nb = read(sockt, buf, sizeof buf);
96 message("Connection closed. Exiting");
99 display(&his_win, buf, nb);
101 if (FD_ISSET(fileno(stdin), &read_set)) {
103 * We can't make the tty non_blocking, because
104 * curses's output routines would screw up
106 ioctl(0, FIONREAD, (struct sgttyb *) &nb);
107 nb = read(0, buf, nb);
108 display(&my_win, buf, nb);
109 /* might lose data here because sockt is non-blocking */
110 write(sockt, buf, nb);
116 * p_error prints the system error message on the standard location
117 * on the screen and then exits. (i.e. a curses version of perror)
123 wmove(my_win.x_win, current_line, 0);
124 wprintw(my_win.x_win, "[%s : %s (%d)]\n",
125 string, strerror(errno), errno);
126 wrefresh(my_win.x_win);
133 * Display string in the standard location
139 wmove(my_win.x_win, current_line, 0);
140 wprintw(my_win.x_win, "[%s]\n", string);
141 if (current_line < my_win.x_nlines - 1)
143 wrefresh(my_win.x_win);