/****************************************************************************
- * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc. *
+ * Copyright 2018,2020 Thomas E. Dickey *
+ * Copyright 1998-2016,2017 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 *
/*
* Author: Thomas E. Dickey (1998-on)
*
- * $Id: ditto.c,v 1.38 2010/05/01 22:08:03 tom Exp $
+ * $Id: ditto.c,v 1.49 2020/02/02 23:34:34 tom Exp $
*
* The program illustrates how to set up multiple screens from a single
* program.
#include <test.priv.h>
#include <sys/stat.h>
+#if HAVE_DELSCREEN
+
#ifdef USE_PTHREADS
#include <pthread.h>
#endif
#include USE_OPENPTY_HEADER
#endif
-#ifdef HAVE_VFORK_H
-#include <vfork.h>
-#endif
-
#define MAX_FIFO 256
#define THIS_FIFO(n) ((n) % MAX_FIFO)
int which1; /* this screen's index in DITTO[] array */
int length; /* length of windows[] and peeks[] */
char **titles; /* per-window titles */
+ WINDOW **parents; /* display boxes around each screen's data */
WINDOW **windows; /* display data from each screen */
PEEK *peeks; /* indices for each screen's fifo */
FIFO fifo; /* fifo for this screen */
DITTO *ditto; /* data for all screens */
} DDATA;
+static void failed(const char *) GCC_NORETURN;
+static void usage(void) GCC_NORETURN;
+
static void
failed(const char *s)
{
static void
usage(void)
{
- fprintf(stderr, "usage: ditto [terminal1 ...]\n");
+ fprintf(stderr, "Usage: ditto [terminal1 ...]\n");
ExitProgram(EXIT_FAILURE);
}
int aslave;
char slave_name[1024];
char s_option[sizeof(slave_name) + 80];
+ const char *xterm_prog = 0;
+
+ if ((xterm_prog = getenv("XTERM_PROG")) == 0)
+ xterm_prog = "xterm";
if (openpty(&amaster, &aslave, slave_name, 0, 0) != 0
|| strlen(slave_name) > sizeof(slave_name) - 1)
errno = EISDIR;
failed(slave_name);
}
- sprintf(s_option, "-S%s/%d", slave_name, aslave);
- if (vfork()) {
- execlp("xterm", "xterm", s_option, "-title", path, (char *) 0);
+ _nc_SPRINTF(s_option, _nc_SLIMIT(sizeof(s_option))
+ "-S%s/%d", slave_name, aslave);
+ if (fork()) {
+ execlp(xterm_prog, xterm_prog, s_option, "-title", path, (char *) 0);
_exit(0);
}
fp = fdopen(amaster, "r+");
return fp;
}
-static void
+static int
init_screen(
#if HAVE_USE_WINDOW
SCREEN *sp GCC_UNUSED,
scrollok(stdscr, TRUE);
box(stdscr, 0, 0);
+ target->parents = typeCalloc(WINDOW *, (size_t) target->length);
target->windows = typeCalloc(WINDOW *, (size_t) target->length);
target->peeks = typeCalloc(PEEK, (size_t) target->length);
nodelay(inner, TRUE);
#endif
+ target->parents[k] = outer;
target->windows[k] = inner;
}
doupdate();
+ return TRUE;
}
static void
{
int n;
+ (void) data;
for (n = 0; n < count; n++) {
ddata->target = n;
USING_SCREEN(data[n].screen, write_screen, (void *) ddata);
}
ExitProgram(EXIT_SUCCESS);
}
+#else
+int
+main(void)
+{
+ printf("This program requires the curses delscreen function\n");
+ ExitProgram(EXIT_FAILURE);
+}
+#endif