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30 * Author: Thomas E. Dickey <dickey@clark.net> 1998
32 * $Id: ditto.c,v 1.19 2008/04/12 23:37:32 tom Exp $
34 * The program illustrates how to set up multiple screens from a single
35 * program. Invoke the program by specifying another terminal on the same
36 * machine by specifying its device, e.g.,
39 #include <test.priv.h>
44 #include USE_OPENPTY_HEADER
57 ExitProgram(EXIT_FAILURE);
63 fprintf(stderr, "usage: ditto [terminal1 ...]\n");
64 ExitProgram(EXIT_FAILURE);
74 char slave_name[1024];
78 if (openpty(&amaster, &aslave, slave_name, 0, 0) != 0)
80 if ((leaf = strrchr(slave_name, '/')) == 0) {
84 sprintf(s_option, "-S%s/%d", slave_name, aslave);
86 execlp("xterm", "xterm", s_option, "-title", path, (char *) 0);
89 fp = fdopen(amaster, "r+");
93 if (stat(path, &sb) < 0)
95 if ((sb.st_mode & S_IFMT) != S_IFCHR) {
99 fp = fopen(path, "r+");
102 printf("opened %s\n", path);
108 close_screen(SCREEN *sp GCC_UNUSED, void *arg GCC_UNUSED)
116 read_screen(SCREEN *sp GCC_UNUSED, void *arg GCC_UNUSED)
122 write_screen(SCREEN *sp GCC_UNUSED, void *arg GCC_UNUSED)
124 addstr((char *) arg);
130 show_ditto(DITTO * data, int count, char *msg)
134 for (n = 0; n < count; n++) {
135 USING_SCREEN(data[n].screen, write_screen, (void *) msg);
140 main(int argc GCC_UNUSED,
141 char *argv[]GCC_UNUSED)
150 if ((data = typeCalloc(DITTO, argc)) == 0)
151 failed("calloc data");
153 data[0].input = stdin;
154 data[0].output = stdout;
155 for (j = 1; j < argc; j++) {
157 data[j].output = open_tty(argv[j]);
161 * If we got this far, we have open connection(s) to the terminal(s).
162 * Set up the screens.
164 for (j = 0; j < argc; j++) {
165 data[j].screen = newterm((char *) 0, /* assume $TERM is the same */
168 if (data[j].screen == 0)
172 scrollok(stdscr, TRUE);
173 nodelay(stdscr, TRUE);
177 * Loop, reading characters from any of the inputs and writing to all
180 for (count = 0;; ++count) {
183 int which = (count % argc);
186 ch = USING_SCREEN(data[which].screen, read_screen, 0);
192 sprintf(message, "from[%d:%d] '%c' (%#x)\n", count, which, ch, ch);
193 show_ditto(data, argc, message);
199 for (j = argc - 1; j >= 0; j--) {
200 USING_SCREEN(data[j].screen, close_screen, 0);
201 fprintf(data[j].output, "**Closed\r\n");
202 fflush(data[j].output);
203 fclose(data[j].output);
204 delscreen(data[j].screen);
206 ExitProgram(EXIT_SUCCESS);