ncurses 5.9 - patch 20130112

[ncurses.git] / test / filter.c

diff --git a/test/filter.c b/test/filter.c
index 6057396a89c6b35534332a4d5f179624cfdcb00d..b90012fe6b340b16316d27a14fcfda91e4716cd0 100644 (file)
--- a/test/filter.c
+++ b/test/filter.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc.                        *
+ * Copyright (c) 1998-2011,2012 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 1.2 1998/05/10 00:39:27 tom Exp $
+ * $Id: filter.c,v 1.15 2012/06/09 20:30:32 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
@@ -45,65 +47,118 @@
  * 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)
+static int
+new_command(char *buffer, int length, attr_t underline)
 {
-       int code;
+    int code;
 
-       attron(A_BOLD);
-       printw("Command: ");
-       attron(underline);
-       code = getnstr(buffer, length);
-       attroff(underline);
-       attroff(A_BOLD);
-       printw("\n");
+    attron(A_BOLD);
+    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");
 
-       return code;
+    return code;
 }
 
-int main(
-       int argc GCC_UNUSED,
-       char *argv[] GCC_UNUSED)
+static void
+usage(void)
 {
-       SCREEN *sp;
-       char buffer[80];
-       attr_t underline;
+    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);
+}
 
-       filter();
-       sp = newterm((char *)0, stdout, stdin);
-       cbreak();
-       keypad(stdscr, TRUE);
+int
+main(int argc, char *argv[])
+{
+    int ch;
+    char buffer[80];
+    attr_t underline;
+    bool i_option = FALSE;
 
-       if (has_colors()) {
-               int background = COLOR_BLACK;
-               start_color();
-#ifdef NCURSES_VERSION
-               if (use_default_colors () != ERR)
-                       background = -1;
-#endif
-               init_pair(1, COLOR_CYAN, background);
-               underline = COLOR_PAIR(1);
-       } else {
-               underline = A_UNDERLINE;
-       }
+    setlocale(LC_ALL, "");
 
-       while (new_command(buffer, sizeof(buffer)-1, underline) != ERR
-         && strlen(buffer) != 0) {
-                       reset_shell_mode();
-               printf("\n");
-               fflush(stdout);
-               system(buffer);
-               reset_prog_mode();
-               touchwin(stdscr);
-               erase();
-               refresh();
+    while ((ch = getopt(argc, argv, "i")) != -1) {
+       switch (ch) {
+       case 'i':
+           i_option = TRUE;
+           break;
+       default:
+           usage();
        }
-       printw("done");
+    }
+
+    printf("starting filter program using %s...\n",
+          i_option ? "initscr" : "newterm");
+    filter();
+    if (i_option) {
+       initscr();
+    } else {
+       (void) newterm((char *) 0, stdout, stdin);
+    }
+    cbreak();
+    keypad(stdscr, TRUE);
+
+    if (has_colors()) {
+       int background = COLOR_BLACK;
+       start_color();
+#if HAVE_USE_DEFAULT_COLORS
+       if (use_default_colors() != ERR)
+           background = -1;
+#endif
+       init_pair(1, COLOR_CYAN, (short) background);
+       underline = (attr_t) COLOR_PAIR(1);
+    } else {
+       underline = A_UNDERLINE;
+    }
+
+    while (new_command(buffer, sizeof(buffer) - 1, underline) != ERR
+          && strlen(buffer) != 0) {
+       reset_shell_mode();
+       printf("\n");
+       fflush(stdout);
+       IGNORE_RC(system(buffer));
+       reset_prog_mode();
+       touchwin(stdscr);
+       erase();
        refresh();
-       endwin();
-       return 0;
+    }
+    printw("done");
+    refresh();
+    endwin();
+    ExitProgram(EXIT_SUCCESS);
+}
+#else
+int
+main(void)
+{
+    printf("This program requires the filter function\n");
+    ExitProgram(EXIT_FAILURE);
 }
+#endif /* HAVE_FILTER */