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