ncurses 6.0 - patch 20171223

[ncurses.git] / test / ditto.c

diff --git a/test/ditto.c b/test/ditto.c
index 6e559261857bca5c75ee979e73c43ab685270346..aff426f86795084a9625baf9c9ccfda75c7cc40f 100644 (file)
--- a/test/ditto.c
+++ b/test/ditto.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc.              *
+ * Copyright (c) 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 +29,7 @@
 /*
  * Author: Thomas E. Dickey (1998-on)
  *
- * $Id: ditto.c,v 1.36 2010/01/30 23:39:09 tom Exp $
+ * $Id: ditto.c,v 1.47 2017/10/18 23:04:42 tom Exp $
  *
  * The program illustrates how to set up multiple screens from a single
  * program.
@@ -44,6 +44,8 @@
 #include <test.priv.h>
 #include <sys/stat.h>
 
+#if HAVE_DELSCREEN
+
 #ifdef USE_PTHREADS
 #include <pthread.h>
 #endif
@@ -52,10 +54,6 @@
 #include USE_OPENPTY_HEADER
 #endif
 
-#ifdef HAVE_VFORK_H
-#include <vfork.h>
-#endif
-
 #define MAX_FIFO 256
 
 #define THIS_FIFO(n) ((n) % MAX_FIFO)
@@ -84,6 +82,7 @@ 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 */
@@ -102,6 +101,9 @@ typedef struct {
     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)
 {
@@ -112,7 +114,7 @@ failed(const char *s)
 static void
 usage(void)
 {
-    fprintf(stderr, "usage: ditto [terminal1 ...]\n");
+    fprintf(stderr, "Usage: ditto [terminal1 ...]\n");
     ExitProgram(EXIT_FAILURE);
 }
 
@@ -155,18 +157,22 @@ open_tty(char *path)
     int aslave;
     char slave_name[1024];
     char s_option[sizeof(slave_name) + 80];
-    char *leaf;
+    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)
        failed("openpty");
-    if ((leaf = strrchr(slave_name, '/')) == 0) {
+    if (strrchr(slave_name, '/') == 0) {
        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+");
@@ -206,6 +212,7 @@ 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);
 
@@ -216,7 +223,7 @@ init_screen(
        WINDOW *inner = derwin(outer, high - 2, wide - 2, 1, 1);
 
        box(outer, 0, 0);
-       mvwaddstr(outer, 0, 2, target->titles[k]);
+       MvWAddStr(outer, 0, 2, target->titles[k]);
        wnoutrefresh(outer);
 
        scrollok(inner, TRUE);
@@ -225,6 +232,7 @@ init_screen(
        nodelay(inner, TRUE);
 #endif
 
+       target->parents[k] = outer;
        target->windows[k] = inner;
     }
     doupdate();
@@ -331,6 +339,7 @@ show_ditto(DITTO * data, int count, DDATA * ddata)
 {
     int n;
 
+    (void) data;
     for (n = 0; n < count; n++) {
        ddata->target = n;
        USING_SCREEN(data[n].screen, write_screen, (void *) ddata);
@@ -386,6 +395,8 @@ main(int argc, char *argv[])
     if ((data = typeCalloc(DITTO, (size_t) argc)) == 0)
        failed("calloc data");
 
+    assert(data != 0);
+
     for (j = 0; j < argc; j++) {
        open_screen(&data[j], argv, argc, j);
     }
@@ -441,3 +452,11 @@ 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