mconf.c

rtai-3.1-test3的源代码(Real-Time Application Interface )

				}
				if (sym_is_changable(sym))
					cprint1("<%c>", ch);
				else
					cprint1("---");
				break;
			default:
				cprint("s%p", menu);
				tmp = cprint1("(%s)", sym_get_string_value(sym));
				tmp = indent - tmp + 4;
				if (tmp < 0)
					tmp = 0;
				cprint1("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
					(sym_has_value(sym) || !sym_is_changable(sym)) ?
					"" : " (NEW)");
				cprint_done();
				goto conf_childs;
			}
		}
		cprint1("%*c%s%s", indent + 1, ' ', menu_get_prompt(menu),
			(sym_has_value(sym) || !sym_is_changable(sym)) ?
			"" : " (NEW)");
		if (menu->prompt->type == P_MENU) {
			cprint1("  --->");
			cprint_done();
			return;
		}
		cprint_done();
	}

conf_childs:
	indent += doint;
	for (child = menu->list; child; child = child->next)
		build_conf(child);
	indent -= doint;
}

static void conf(struct menu *menu)
{
	struct menu *submenu;
	const char *prompt = menu_get_prompt(menu);
	struct symbol *sym;
	char active_entry[40];
	int stat, type, i;

	unlink("lxdialog.scrltmp");
	active_entry[0] = 0;
	while (1) {
		cprint_init();
		cprint("--title");
		cprint("%s", prompt ? prompt : "Main Menu");
		cprint("--menu");
		cprint(menu_instructions);
		cprint("%d", rows);
		cprint("%d", cols);
		cprint("%d", rows - 10);
		cprint("%s", active_entry);
		current_menu = menu;
		build_conf(menu);
		if (!child_count)
			break;
		if (menu == &rootmenu) {
			cprint(":");
			cprint("--- ");
			cprint("L");
			cprint("    Load an Alternate Configuration File");
			cprint("S");
			cprint("    Save Configuration to an Alternate File");
		}
		stat = exec_conf();
		if (stat < 0)
			continue;

		if (stat == 1 || stat == 255)
			break;

		type = input_buf[0];
		if (!type)
			continue;

		for (i = 0; input_buf[i] && !isspace(input_buf[i]); i++)
			;
		if (i >= sizeof(active_entry))
			i = sizeof(active_entry) - 1;
		input_buf[i] = 0;
		strcpy(active_entry, input_buf);

		sym = NULL;
		submenu = NULL;
		if (sscanf(input_buf + 1, "%p", &submenu) == 1)
			sym = submenu->sym;

		switch (stat) {
		case 0:
			switch (type) {
			case 'm':
				if (single_menu_mode)
					submenu->data = (void *) (long) !submenu->data;
				else
					conf(submenu);
				break;
			case 't':
				if (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)
					conf_choice(submenu);
				else if (submenu->prompt->type == P_MENU)
					conf(submenu);
				break;
			case 's':
				conf_string(submenu);
				break;
			case 'L':
				conf_load();
				break;
			case 'S':
				conf_save();
				break;
			}
			break;
		case 2:
			if (sym)
				show_help(submenu);
			else
				show_readme();
			break;
		case 3:
			if (type == 't') {
				if (sym_set_tristate_value(sym, yes))
					break;
				if (sym_set_tristate_value(sym, mod))
					show_textbox(NULL, setmod_text, 6, 74);
			}
			break;
		case 4:
			if (type == 't')
				sym_set_tristate_value(sym, no);
			break;
		case 5:
			if (type == 't')
				sym_set_tristate_value(sym, mod);
			break;
		case 6:
			if (type == 't')
				sym_toggle_tristate_value(sym);
			else if (type == 'm')
				conf(submenu);
			break;
		}
	}
}

static void show_textbox(const char *title, const char *text, int r, int c)
{
	int fd;

	fd = creat(".help.tmp", 0777);
	write(fd, text, strlen(text));
	close(fd);
	do {
		cprint_init();
		if (title) {
			cprint("--title");
			cprint("%s", title);
		}
		cprint("--textbox");
		cprint(".help.tmp");
		cprint("%d", r);
		cprint("%d", c);
	} while (exec_conf() < 0);
	unlink(".help.tmp");
}

static void show_helptext(const char *title, const char *text)
{
	show_textbox(title, text, rows, cols);
}

static void show_help(struct menu *menu)
{
	const char *help;
	char *helptext;
	struct symbol *sym = menu->sym;

	help = sym->help;
	if (!help)
		help = nohelp_text;
	if (sym->name) {
		helptext = malloc(strlen(sym->name) + strlen(help) + 16);
		sprintf(helptext, "CONFIG_%s:\n\n%s", sym->name, help);
		show_helptext(menu_get_prompt(menu), helptext);
		free(helptext);
	} else
		show_helptext(menu_get_prompt(menu), help);
}

static void show_readme(void)
{
	do {
		cprint_init();
		cprint("--textbox");
		cprint("scripts/README.Menuconfig");
		cprint("%d", rows);
		cprint("%d", cols);
	} while (exec_conf() == -1);
}

static void conf_choice(struct menu *menu)
{
	const char *prompt = menu_get_prompt(menu);
	struct menu *child;
	struct symbol *active;
	int stat;

	while (1) {
		cprint_init();
		cprint("--title");
		cprint("%s", prompt ? prompt : "Main Menu");
		cprint("--radiolist");
		cprint(radiolist_instructions);
		cprint("15");
		cprint("70");
		cprint("6");

		current_menu = menu;
		active = sym_get_choice_value(menu->sym);
		for (child = menu->list; child; child = child->next) {
			if (!menu_is_visible(child))
				continue;
			cprint("%p", child);
			cprint("%s", menu_get_prompt(child));
			cprint(child->sym == active ? "ON" : "OFF");
		}

		stat = exec_conf();
		switch (stat) {
		case 0:
			if (sscanf(input_buf, "%p", &menu) != 1)
				break;
			sym_set_tristate_value(menu->sym, yes);
			return;
		case 1:
			show_help(menu);
			break;
		case 255:
			return;
		}
	}
}

static void conf_string(struct menu *menu)
{
	const char *prompt = menu_get_prompt(menu);
	int stat;

	while (1) {
		cprint_init();
		cprint("--title");
		cprint("%s", prompt ? prompt : "Main Menu");
		cprint("--inputbox");
		switch (sym_get_type(menu->sym)) {
		case S_INT:
			cprint(inputbox_instructions_int);
			break;
		case S_HEX:
			cprint(inputbox_instructions_hex);
			break;
		case S_STRING:
			cprint(inputbox_instructions_string);
			break;
		default:
			/* panic? */;
		}
		cprint("10");
		cprint("75");
		cprint("%s", sym_get_string_value(menu->sym));
		stat = exec_conf();
		switch (stat) {
		case 0:
			if (sym_set_string_value(menu->sym, input_buf))
				return;
			show_textbox(NULL, "You have made an invalid entry.", 5, 43);
			break;
		case 1:
			show_help(menu);
			break;
		case 255:
			return;
		}
	}
}

static void conf_load(void)
{
	int stat;

	while (1) {
		cprint_init();
		cprint("--inputbox");
		cprint(load_config_text);
		cprint("11");
		cprint("55");
		cprint("%s", filename);
		stat = exec_conf();
		switch(stat) {
		case 0:
			if (!input_buf[0])
				return;
			if (!conf_read(input_buf))
				return;
			show_textbox(NULL, "File does not exist!", 5, 38);
			break;
		case 1:
			show_helptext("Load Alternate Configuration", load_config_help);
			break;
		case 255:
			return;
		}
	}
}

static void conf_save(void)
{
	int stat;

	while (1) {
		cprint_init();
		cprint("--inputbox");
		cprint(save_config_text);
		cprint("11");
		cprint("55");
		cprint("%s", filename);
		stat = exec_conf();
		switch(stat) {
		case 0:
			if (!input_buf[0])
				return;
			if (!conf_write(input_buf))
				return;
			show_textbox(NULL, "Can't create file!  Probably a nonexistent directory.", 5, 60);
			break;
		case 1:
			show_helptext("Save Alternate Configuration", save_config_help);
			break;
		case 255:
			return;
		}
	}
}

static void conf_cleanup(void)
{
	tcsetattr(1, TCSAFLUSH, &ios_org);
	unlink(".help.tmp");
	unlink("lxdialog.scrltmp");
}

int main(int ac, char **av)
{
	struct symbol *sym;
	char *mode;
	int stat;

	conf_parse(av[1]);
	conf_read(NULL);

	sym = sym_lookup("RTAI_VERSION", 0);
	sym_calc_value(sym);
	sprintf(menu_backtitle, "RTAI %s Configuration",
		sym_get_string_value(sym));

	mode = getenv("MENUCONFIG_MODE");
	if (mode) {
		if (!strcasecmp(mode, "single_menu"))
			single_menu_mode = 1;
	}

	tcgetattr(1, &ios_org);
	atexit(conf_cleanup);
	init_wsize();
	conf(&rootmenu);

	do {
		cprint_init();
		cprint("--yesno");
		cprint("Do you wish to save your new configuration?");
		cprint("5");
		cprint("60");
		stat = exec_conf();
	} while (stat < 0);

	if (stat == 0) {
		conf_write(NULL);
	} else
		printf("\n\nYour RTAI configuration changes were NOT saved.\n\n");

	return 0;
}