/****************************************************************************
- * 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 *
/*
* 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
* 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 */