ncurses 5.7 - patch 20100130

[ncurses.git] / test / ditto.c

diff --git a/test/ditto.c b/test/ditto.c
index 9d1116c279eaa1e8e38802b1b17b4b0402fa72ae..6e559261857bca5c75ee979e73c43ab685270346 100644 (file)
--- a/test/ditto.c
+++ b/test/ditto.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2009,2010 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 1.30 2008/06/14 23:00:26 tom Exp $
+ * $Id: ditto.c,v 1.36 2010/01/30 23:39:09 tom Exp $
  *
  * The program illustrates how to set up multiple screens from a single
  * program.
@@ -43,7 +43,6 @@
  */
 #include <test.priv.h>
 #include <sys/stat.h>
-#include <errno.h>
 
 #ifdef USE_PTHREADS
 #include <pthread.h>
@@ -53,6 +52,10 @@
 #include USE_OPENPTY_HEADER
 #endif
 
+#ifdef HAVE_VFORK_H
+#include <vfork.h>
+#endif
+
 #define MAX_FIFO 256
 
 #define THIS_FIFO(n) ((n) % MAX_FIFO)
@@ -137,8 +140,8 @@ peek_fifo(FIFO * fifo, PEEK * peek)
 {
     int result = -1;
     if (peek->sequence < fifo->sequence) {
-       peek->sequence += 1;
        result = fifo->data[THIS_FIFO(peek->sequence)];
+       peek->sequence += 1;
     }
     return result;
 }
@@ -151,21 +154,24 @@ open_tty(char *path)
     int amaster;
     int aslave;
     char slave_name[1024];
-    char s_option[1024];
+    char s_option[sizeof(slave_name) + 80];
     char *leaf;
 
-    if (openpty(&amaster, &aslave, slave_name, 0, 0) != 0)
+    if (openpty(&amaster, &aslave, slave_name, 0, 0) != 0
+       || strlen(slave_name) > sizeof(slave_name) - 1)
        failed("openpty");
     if ((leaf = strrchr(slave_name, '/')) == 0) {
        errno = EISDIR;
        failed(slave_name);
     }
     sprintf(s_option, "-S%s/%d", slave_name, aslave);
-    if (fork()) {
+    if (vfork()) {
        execlp("xterm", "xterm", s_option, "-title", path, (char *) 0);
        _exit(0);
     }
     fp = fdopen(amaster, "r+");
+    if (fp == 0)
+       failed(path);
 #else
     struct stat sb;
 
@@ -180,11 +186,16 @@ open_tty(char *path)
        failed(path);
     printf("opened %s\n", path);
 #endif
+    assert(fp != 0);
     return fp;
 }
 
 static void
-init_screen(SCREEN *sp GCC_UNUSED, void *arg)
+init_screen(
+#if HAVE_USE_WINDOW
+              SCREEN *sp GCC_UNUSED,
+#endif
+              void *arg)
 {
     DITTO *target = (DITTO *) arg;
     int high, wide;
@@ -195,8 +206,8 @@ init_screen(SCREEN *sp GCC_UNUSED, void *arg)
     scrollok(stdscr, TRUE);
     box(stdscr, 0, 0);
 
-    target->windows = typeCalloc(WINDOW *, target->length);
-    target->peeks = typeCalloc(PEEK, target->length);
+    target->windows = typeCalloc(WINDOW *, (size_t) target->length);
+    target->peeks = typeCalloc(PEEK, (size_t) target->length);
 
     high = (LINES - 2) / target->length;
     wide = (COLS - 2);
@@ -233,6 +244,7 @@ open_screen(DITTO * target, char **source, int length, int which1)
     target->which1 = which1;
     target->titles = source;
     target->length = length;
+    target->fifo.head = -1;
     target->screen = newterm((char *) 0,       /* assume $TERM is the same */
                             target->output,
                             target->input);
@@ -244,9 +256,15 @@ open_screen(DITTO * target, char **source, int length, int which1)
 }
 
 static int
-close_screen(SCREEN *sp GCC_UNUSED, void *arg GCC_UNUSED)
+close_screen(
+#if HAVE_USE_WINDOW
+               SCREEN *sp GCC_UNUSED,
+#endif
+               void *arg GCC_UNUSED)
 {
+#if HAVE_USE_WINDOW
     (void) sp;
+#endif
     (void) arg;
     return endwin();
 }
@@ -255,7 +273,11 @@ close_screen(SCREEN *sp GCC_UNUSED, void *arg GCC_UNUSED)
  * Read data from the 'source' screen.
  */
 static int
-read_screen(SCREEN *sp GCC_UNUSED, void *arg)
+read_screen(
+#if HAVE_USE_WINDOW
+              SCREEN *sp GCC_UNUSED,
+#endif
+              void *arg)
 {
     DDATA *data = (DDATA *) arg;
     DITTO *ditto = &(data->ditto[data->source]);
@@ -274,7 +296,11 @@ read_screen(SCREEN *sp GCC_UNUSED, void *arg)
  * Write all of the data that's in fifos for the 'target' screen.
  */
 static int
-write_screen(SCREEN *sp GCC_UNUSED, void *arg GCC_UNUSED)
+write_screen(
+#if HAVE_USE_WINDOW
+               SCREEN *sp GCC_UNUSED,
+#endif
+               void *arg GCC_UNUSED)
 {
     DDATA *data = (DDATA *) arg;
     DITTO *ditto = &(data->ditto[data->target]);
@@ -290,7 +316,7 @@ write_screen(SCREEN *sp GCC_UNUSED, void *arg GCC_UNUSED)
        while ((ch = peek_fifo(fifo, peek)) > 0) {
            changed = TRUE;
 
-           waddch(win, ch);
+           waddch(win, (chtype) ch);
            wnoutrefresh(win);
        }
     }
@@ -357,7 +383,7 @@ main(int argc, char *argv[])
     if (argc <= 1)
        usage();
 
-    if ((data = typeCalloc(DITTO, argc)) == 0)
+    if ((data = typeCalloc(DITTO, (size_t) argc)) == 0)
        failed("calloc data");
 
     for (j = 0; j < argc; j++) {