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/****************************************************************************
* Copyright (c) 1998,2001 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/*
* Author: Thomas E. Dickey <dickey@clark.net> 1998
*
* $Id: ditto.c,v 1.4 2001/09/15 21:53:37 tom Exp $
*
* The program illustrates how to set up multiple screens from a single
* program. Invoke the program by specifying another terminal on the same
* machine by specifying its device, e.g.,
* ditto /dev/ttyp1
*/
#include <test.priv.h>
#include <sys/stat.h>
#include <errno.h>
typedef struct {
FILE *input;
FILE *output;
SCREEN *screen;
} DITTO;
static void
failed(const char *s)
{
perror(s);
ExitProgram(EXIT_FAILURE);
}
static void
usage(void)
{
fprintf(stderr, "usage: ditto [terminal1 ...]\n");
ExitProgram(EXIT_FAILURE);
}
static FILE *
open_tty(char *path)
{
FILE *fp;
struct stat sb;
if (stat(path, &sb) < 0)
failed(path);
if ((sb.st_mode & S_IFMT) != S_IFCHR) {
errno = ENOTTY;
failed(path);
}
fp = fopen(path, "a+");
if (fp == 0)
failed(path);
printf("opened %s\n", path);
return fp;
}
int
main(
int argc GCC_UNUSED,
char *argv[]GCC_UNUSED)
{
int j;
int active_tty = 0;
DITTO *data;
if (argc <= 1)
usage();
if ((data = (DITTO *) calloc(argc, sizeof(DITTO))) == 0)
failed("calloc data");
data[0].input = stdin;
data[0].output = stdout;
for (j = 1; j < argc; j++) {
data[j].input =
data[j].output = open_tty(argv[j]);
}
/*
* If we got this far, we have open connection(s) to the terminal(s).
* Set up the screens.
*/
for (j = 0; j < argc; j++) {
active_tty++;
data[j].screen = newterm(
(char *) 0, /* assume $TERM is the same */
data[j].output,
data[j].input);
if (data[j].screen == 0)
failed("newterm");
cbreak();
noecho();
scrollok(stdscr, TRUE);
}
/*
* Loop, reading characters from any of the inputs and writing to all
* of the screens.
*/
for (;;) {
int ch;
set_term(data[0].screen);
ch = getch();
if (ch == ERR)
continue;
if (ch == 4)
break;
for (j = 0; j < argc; j++) {
set_term(data[j].screen);
addch(ch);
refresh();
}
}
/*
* Cleanup and exit
*/
for (j = argc - 1; j >= 0; j--) {
set_term(data[j].screen);
endwin();
}
ExitProgram(EXIT_SUCCESS);
}
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