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 * Copyright (c) 1998 Free Software Foundation, Inc.                        *
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/*
 * Author:  Thomas E. Dickey <dickey@clark.net> 1998
 *
 * $Id: filter.c,v 1.2 1998/05/10 00:39:27 tom Exp $
 */
#include <test.priv.h>

/*
 * An example of the 'filter()' function in ncurses, this program prompts
 * for commands and executes them (like a command shell).  It illustrates
 * how ncurses can be used to implement programs that are not full-screen.
 *
 * Ncurses differs slightly from SVr4 curses.  The latter does not flush its
 * state when exiting program mode, so the attributes on the command lines of
 * this program 'bleed' onto the executed commands.  Rather than use the
 * reset_shell_mode() and reset_prog_mode() functions, we could invoke endwin()
 * 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)
{
	int code;

	attron(A_BOLD);
	printw("Command: ");
	attron(underline);
	code = getnstr(buffer, length);
	attroff(underline);
	attroff(A_BOLD);
	printw("\n");

	return code;
}

int main(
	int argc GCC_UNUSED,
	char *argv[] GCC_UNUSED)
{
	SCREEN *sp;
	char buffer[80];
	attr_t underline;

	filter();
	sp = newterm((char *)0, stdout, stdin);
	cbreak();
	keypad(stdscr, TRUE);

	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;
	}

	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();
	}
	printw("done");
	refresh();
	endwin();
	return 0;
}