ncurses 5.9 - patch 20110820

[ncurses.git] / test / filter.c

diff --git a/test/filter.c b/test/filter.c
index 272f3722b7c7e090cdf815a331abd2c2a0a80359..4f282416d637c3958efc5564254a887bd66ab28b 100644 (file)
--- a/test/filter.c
+++ b/test/filter.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc.                        *
+ * Copyright (c) 1998-2010,2011 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            *
@@ -29,10 +29,12 @@
 /*
  * Author:  Thomas E. Dickey <dickey@clark.net> 1998
  *
- * $Id: filter.c,v 1.4 2000/09/02 18:50:38 tom Exp $
+ * $Id: filter.c,v 1.14 2011/04/23 20:13:32 tom Exp $
  */
 #include <test.priv.h>
 
+#if HAVE_FILTER
+
 /*
  * An example of the 'filter()' function in ncurses, this program prompts
  * for commands and executes them (like a command shell).  It illustrates
@@ -45,11 +47,6 @@
  * and refresh(), but that does not work any better.
  */
 
-#ifndef NCURSES_VERSION
-#define attr_t long
-#define getnstr(s,n) getstr(s)
-#endif
-
 static int
 new_command(char *buffer, int length, attr_t underline)
 {
@@ -59,6 +56,21 @@ new_command(char *buffer, int length, attr_t underline)
     printw("Command: ");
     attron(underline);
     code = getnstr(buffer, length);
+    /*
+     * If this returns anything except ERR/OK, it would be one of ncurses's
+     * extensions.  Fill the buffer with something harmless that the shell
+     * will execute as a comment.
+     */
+#ifdef KEY_EVENT
+    if (code == KEY_EVENT)
+       strcpy(buffer, "# event!");
+#endif
+#ifdef KEY_RESIZE
+    if (code == KEY_RESIZE) {
+       strcpy(buffer, "# resize!");
+       getch();
+    }
+#endif
     attroff(underline);
     attroff(A_BOLD);
     printw("\n");
@@ -66,15 +78,50 @@ new_command(char *buffer, int length, attr_t underline)
     return code;
 }
 
+static void
+usage(void)
+{
+    static const char *msg[] =
+    {
+       "Usage: filter [options]"
+       ,""
+       ,"Options:"
+       ,"  -i   use initscr() rather than newterm()"
+    };
+    unsigned n;
+    for (n = 0; n < SIZEOF(msg); n++)
+       fprintf(stderr, "%s\n", msg[n]);
+    ExitProgram(EXIT_FAILURE);
+}
+
 int
-main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
+main(int argc, char *argv[])
 {
-    SCREEN *sp;
+    int ch;
     char buffer[80];
     attr_t underline;
+    bool i_option = FALSE;
 
+    setlocale(LC_ALL, "");
+
+    while ((ch = getopt(argc, argv, "i")) != -1) {
+       switch (ch) {
+       case 'i':
+           i_option = TRUE;
+           break;
+       default:
+           usage();
+       }
+    }
+
+    printf("starting filter program using %s...\n",
+          i_option ? "initscr" : "newterm");
     filter();
-    sp = newterm((char *) 0, stdout, stdin);
+    if (i_option) {
+       initscr();
+    } else {
+       (void) newterm((char *) 0, stdout, stdin);
+    }
     cbreak();
     keypad(stdscr, TRUE);
 
@@ -85,7 +132,7 @@ main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
        if (use_default_colors() != ERR)
            background = -1;
 #endif
-       init_pair(1, COLOR_CYAN, background);
+       init_pair(1, COLOR_CYAN, (short) background);
        underline = COLOR_PAIR(1);
     } else {
        underline = A_UNDERLINE;
@@ -96,7 +143,7 @@ main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
        reset_shell_mode();
        printf("\n");
        fflush(stdout);
-       system(buffer);
+       IGNORE_RC(system(buffer));
        reset_prog_mode();
        touchwin(stdscr);
        erase();
@@ -105,5 +152,13 @@ main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
     printw("done");
     refresh();
     endwin();
-    return 0;
+    ExitProgram(EXIT_SUCCESS);
+}
+#else
+int
+main(void)
+{
+    printf("This program requires the filter function\n");
+    ExitProgram(EXIT_FAILURE);
 }
+#endif /* HAVE_FILTER */