X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=test%2Fditto.c;h=fdc8611aaf6d3862dd47cc9d56352889ccb2d6eb;hp=636a6eeceb62927ec7876a190f1c4e771af350d2;hb=493e2f7b3fc309879f561a094fdfc15e5304b3d6;hpb=52aa842907b31bb56fb5133da3f023b45bd4355f

diff --git a/test/ditto.c b/test/ditto.c
index 636a6eec..fdc8611a 100644
--- a/test/ditto.c
+++ b/test/ditto.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc.              *
+ * Copyright 2018-2020,2021 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            *
@@ -29,7 +30,7 @@
 /*
  * Author: Thomas E. Dickey (1998-on)
  *
- * $Id: ditto.c,v 1.40 2010/11/14 01:06:47 tom Exp $
+ * $Id: ditto.c,v 1.52 2021/08/15 20:07:11 tom Exp $
  *
  * The program illustrates how to set up multiple screens from a single
  * program.
@@ -44,6 +45,8 @@
 #include <test.priv.h>
 #include <sys/stat.h>
 
+#if HAVE_DELSCREEN
+
 #ifdef USE_PTHREADS
 #include <pthread.h>
 #endif
@@ -80,6 +83,7 @@ typedef struct {
     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 */
@@ -98,6 +102,9 @@ typedef struct {
     DITTO *ditto;		/* data for all screens */
 } DDATA;
 
+static GCC_NORETURN void failed(const char *);
+static GCC_NORETURN void usage(void);
+
 static void
 failed(const char *s)
 {
@@ -108,7 +115,7 @@ failed(const char *s)
 static void
 usage(void)
 {
-    fprintf(stderr, "usage: ditto [terminal1 ...]\n");
+    fprintf(stderr, "Usage: ditto [terminal1 ...]\n");
     ExitProgram(EXIT_FAILURE);
 }
 
@@ -151,6 +158,10 @@ open_tty(char *path)
     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)
@@ -159,9 +170,10 @@ open_tty(char *path)
 	errno = EISDIR;
 	failed(slave_name);
     }
-    sprintf(s_option, "-S%s/%d", slave_name, aslave);
+    _nc_SPRINTF(s_option, _nc_SLIMIT(sizeof(s_option))
+		"-S%s/%d", slave_name, aslave);
     if (fork()) {
-	execlp("xterm", "xterm", s_option, "-title", path, (char *) 0);
+	execlp(xterm_prog, xterm_prog, s_option, "-title", path, (char *) 0);
 	_exit(0);
     }
     fp = fdopen(amaster, "r+");
@@ -170,7 +182,7 @@ open_tty(char *path)
 #else
     struct stat sb;
 
-    if (stat(path, &sb) < 0)
+    if (stat(path, &sb) == -1)
 	failed(path);
     if ((sb.st_mode & S_IFMT) != S_IFCHR) {
 	errno = ENOTTY;
@@ -185,7 +197,7 @@ open_tty(char *path)
     return fp;
 }
 
-static void
+static int
 init_screen(
 #if HAVE_USE_WINDOW
 	       SCREEN *sp GCC_UNUSED,
@@ -201,6 +213,7 @@ init_screen(
     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);
 
@@ -220,9 +233,11 @@ init_screen(
 	nodelay(inner, TRUE);
 #endif
 
+	target->parents[k] = outer;
 	target->windows[k] = inner;
     }
     doupdate();
+    return TRUE;
 }
 
 static void
@@ -338,7 +353,6 @@ static void *
 handle_screen(void *arg)
 {
     DDATA ddata;
-    int ch;
 
     memset(&ddata, 0, sizeof(ddata));
     ddata.ditto = (DITTO *) arg;
@@ -346,7 +360,7 @@ handle_screen(void *arg)
     ddata.ditto -= ddata.source;	/* -> base of array */
 
     for (;;) {
-	ch = read_screen(ddata.ditto->screen, &ddata);
+	int ch = read_screen(ddata.ditto->screen, &ddata);
 	if (ch == CTRL('D')) {
 	    int later = (ddata.source ? ddata.source : -1);
 	    int j;
@@ -439,3 +453,11 @@ main(int argc, char *argv[])
     }
     ExitProgram(EXIT_SUCCESS);
 }
+#else
+int
+main(void)
+{
+    printf("This program requires the curses delscreen function\n");
+    ExitProgram(EXIT_FAILURE);
+}
+#endif