X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=test%2Ffilter.c;h=561a35b9274a5c0fcefc821e4d879846dbcf50c5;hp=8fbda25e7ad11a8d3878b2d4576ef5f5f664f6c2;hb=43f75d22e281b6230678008b72621a76696f45ba;hpb=55ccd2b959766810cf7db8d1c4462f338ce0afc8

diff --git a/test/filter.c b/test/filter.c
index 8fbda25e..561a35b9 100644
--- a/test/filter.c
+++ b/test/filter.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2006,2008 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 1.8 2004/06/05 21:57:30 tom Exp $
+ * $Id: filter.c,v 1.12 2008/12/06 21:59:27 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
@@ -54,6 +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");
@@ -61,16 +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[])
 {
+    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();
-    (void) newterm((char *) 0, stdout, stdin);
+    if (i_option) {
+	initscr();
+    } else {
+	(void) newterm((char *) 0, stdout, stdin);
+    }
     cbreak();
     keypad(stdscr, TRUE);
 
@@ -103,3 +154,11 @@ main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
     endwin();
     ExitProgram(EXIT_SUCCESS);
 }
+#else
+int
+main(void)
+{
+    printf("This program requires the filter function\n");
+    ExitProgram(EXIT_FAILURE);
+}
+#endif /* HAVE_FILTER */