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Commit a72f3e2b authored by Nir Tzachar's avatar Nir Tzachar Committed by Michal Marek
Browse files

nconfig: add search support 



Remove the old hotkeys feature, and replace it by an interactive string
search.
From nconfig help:

Searching: pressing '/' triggers interactive search mode.
           nconfig performs a case insensitive search for the string
           in the menu prompts (no regex support).
           Pressing the up/down keys highlights the previous/next
           matching item. Backspace removes one character from the
           match string. Pressing either '/' again or ESC exits
           search mode. All other keys behave normally.

Miscellaneous other changes (including Rundy's and Justin's input).

Signed-off-by: default avatarNir Tzachar <nir.tzachar@gmail.com>
Acked-by: default avatarSam Ravnborg <sam@ravnborg.org>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
parent 3643f849

scripts/kconfig/nconf.c

+196 −169
Original line number Diff line number Diff line
@@ -5,9 +5,12 @@ 
 * Derived from menuconfig.

 *

 */

#define _GNU_SOURCE

#include <string.h>

#define LKC_DIRECT_LINK

#include "lkc.h"

#include "nconf.h"

#include <ctype.h>



static const char nconf_readme[] = N_(

"Overview\n"
@@ -23,7 +26,7 @@ static const char nconf_readme[] = N_( 
"  < > can be built in, modularized or removed\n"

"  { } can be built in or modularized (selected by other feature)\n"

"  - - are selected by other feature,\n"

"  XXX cannot be selected. use Symbol Info to find out why,\n"

"  XXX cannot be selected. Use Symbol Info to find out why,\n"

"while *, M or whitespace inside braces means to build in, build as\n"

"a module or to exclude the feature respectively.\n"

"\n"
@@ -41,9 +44,13 @@ static const char nconf_readme[] = N_( 
"   pressing <Enter> of <right-arrow>. Use <Esc> or <left-arrow> to go back.\n"

"   Submenus are designated by \"--->\".\n"

"\n"

"   Shortcut: Press the option's highlighted letter (hotkey).\n"

"             Pressing a hotkey more than once will sequence\n"

"             through all visible items which use that hotkey.\n"

"   Searching: pressing '/' triggers interactive search mode.\n"

"              nconfig performs a case insensitive search for the string\n"

"              in the menu prompts (no regex support).\n"

"              Pressing the up/down keys highlights the previous/next\n"

"              matching item. Backspace removes one character from the\n"

"              match string. Pressing either '/' again or ESC exits\n"

"              search mode. All other keys behave normally.\n"

"\n"

"   You may also use the <PAGE UP> and <PAGE DOWN> keys to scroll\n"

"   unseen options into view.\n"
@@ -141,21 +148,21 @@ menu_no_f_instructions[] = N_( 
" <Enter> or <right-arrow> selects submenus --->.\n"

" Capital Letters are hotkeys.\n"

" Pressing <Y> includes, <N> excludes, <M> modularizes features.\n"

" Pressing SpaceBar toggles between the above options\n"

" Pressing SpaceBar toggles between the above options.\n"

" Press <Esc> or <left-arrow> to go back one menu,\n"

" <?> or <h> for Help, </> for Search.\n"

" <1> is interchangable with <F1>, <2> with <F2>, etc.\n"

" <1> is interchangeable with <F1>, <2> with <F2>, etc.\n"

" Legend: [*] built-in  [ ] excluded  <M> module  < > module capable.\n"

" <Esc> always leaves the current window\n"),

" <Esc> always leaves the current window.\n"),

menu_instructions[] = N_(

" Arrow keys navigate the menu.\n"

" <Enter> or <right-arrow> selects submenus --->.\n"

" Capital Letters are hotkeys.\n"

" Pressing <Y> includes, <N> excludes, <M> modularizes features.\n"

" Pressing SpaceBar toggles between the above options\n"

" Press <Esc>, <F3> or <left-arrow> to go back one menu, \n"

" Press <Esc>, <F5> or <left-arrow> to go back one menu,\n"

" <?>, <F1> or <h> for Help, </> for Search.\n"

" <1> is interchangable with <F1>, <2> with <F2>, etc.\n"

" <1> is interchangeable with <F1>, <2> with <F2>, etc.\n"

" Legend: [*] built-in  [ ] excluded  <M> module  < > module capable.\n"

" <Esc> always leaves the current window\n"),

radiolist_instructions[] = N_(
@@ -252,7 +259,6 @@ struct mitem { 
	char str[256];

	char tag;

	void *usrptr;

	int is_hot;

	int is_visible;

};
@@ -275,14 +281,6 @@ static int items_num; 
static int global_exit;

/* the currently selected button */

const char *current_instructions = menu_instructions;

/* this array is used to implement hot keys. it is updated in item_make and

 * resetted in clean_items. It would be better to use a hash, but lets keep it

 * simple... */

#define MAX_SAME_KEY MAX_MENU_ITEMS

struct {

	int count;

	int ptrs[MAX_MENU_ITEMS];

} hotkeys[1<<(sizeof(char)*8)];



static void conf(struct menu *menu);

static void conf_choice(struct menu *menu);
@@ -292,6 +290,7 @@ static void conf_save(void); 
static void show_help(struct menu *menu);

static int do_exit(void);

static void setup_windows(void);

static void search_conf(void);



typedef void (*function_key_handler_t)(int *key, struct menu *menu);

static void handle_f1(int *key, struct menu *current_item);
@@ -302,6 +301,7 @@ static void handle_f5(int *key, struct menu *current_item); 
static void handle_f6(int *key, struct menu *current_item);

static void handle_f7(int *key, struct menu *current_item);

static void handle_f8(int *key, struct menu *current_item);

static void handle_f9(int *key, struct menu *current_item);



struct function_keys {

	const char *key_str;
@@ -310,7 +310,7 @@ struct function_keys { 
	function_key_handler_t handler;

};



static const int function_keys_num = 8;

static const int function_keys_num = 9;

struct function_keys function_keys[] = {

	{

		.key_str = "F1",
@@ -320,13 +320,13 @@ struct function_keys function_keys[] = { 
	},

	{

		.key_str = "F2",

		.func = "Symbol Info",

		.func = "Sym Info",

		.key = F_SYMBOL,

		.handler = handle_f2,

	},

	{

		.key_str = "F3",

		.func = "Instructions",

		.func = "Insts",

		.key = F_INSTS,

		.handler = handle_f3,

	},
@@ -356,9 +356,15 @@ struct function_keys function_keys[] = { 
	},

	{

		.key_str = "F8",

		.func = "Sym Search",

		.key = F_SEARCH,

		.handler = handle_f8,

	},

	{

		.key_str = "F9",

		.func = "Exit",

		.key = F_EXIT,

		.handler = handle_f8,

		.handler = handle_f9,

	},

};
@@ -444,8 +450,15 @@ static void handle_f7(int *key, struct menu *current_item) 
	return;

}



/* exit */

/* search */

static void handle_f8(int *key, struct menu *current_item)

{

	search_conf();

	return;

}



/* exit */

static void handle_f9(int *key, struct menu *current_item)

{

	do_exit();

	return;
@@ -479,110 +492,44 @@ static void clean_items(void) 
		free_item(curses_menu_items[i]);

	bzero(curses_menu_items, sizeof(curses_menu_items));

	bzero(k_menu_items, sizeof(k_menu_items));

	bzero(hotkeys, sizeof(hotkeys));

	items_num = 0;

}



/* return the index of the next hot item, or -1 if no such item exists */

static int get_next_hot(int c)

{

	static int hot_index;

	static int hot_char;



	if (c < 0 || c > 255 || hotkeys[c].count <= 0)

		return -1;



	if (hot_char == c) {

		hot_index = (hot_index+1)%hotkeys[c].count;

		return hotkeys[c].ptrs[hot_index];

	} else {

		hot_char = c;

		hot_index = 0;

		return hotkeys[c].ptrs[0];

	}

}



/* can the char c be a hot key? no, if c is a common shortcut used elsewhere */

static int canbhot(char c)

{

	c = tolower(c);

	return isalnum(c) && c != 'y' && c != 'm' && c != 'h' &&

		c != 'n' && c != '?';

}



/* check if str already contains a hot key. */

static int is_hot(int index)

{

	return k_menu_items[index].is_hot;

}

typedef enum {MATCH_TINKER_PATTERN_UP, MATCH_TINKER_PATTERN_DOWN,

	FIND_NEXT_MATCH_DOWN, FIND_NEXT_MATCH_UP} match_f;



/* find the first possible hot key, and mark it.

 * index is the index of the item in the menu

 * return 0 on success*/

static int make_hot(char *dest, int len, const char *org, int index)

/* return the index of the matched item, or -1 if no such item exists */

static int get_mext_match(const char *match_str, match_f flag)

{

	int position = -1;

	int i;

	int tmp;

	int c;

	int org_len = strlen(org);



	if (org == NULL || is_hot(index))

		return 1;



	/* make sure not to make hot keys out of markers.

	 * find where to start looking for a hot key

	 */

	i = 0;

	/* skip white space */

	while (i < org_len && org[i] == ' ')

		i++;

	if (i == org_len)

		return -1;

	/* if encountering '(' or '<' or '[', find the match and look from there

	 **/

	if (org[i] == '[' || org[i] == '<' || org[i] == '(') {

		i++;

		for (; i < org_len; i++)

			if (org[i] == ']' || org[i] == '>' || org[i] == ')')

				break;

	}

	if (i == org_len)

	int match_start = item_index(current_item(curses_menu));

	int index;



	if (flag == FIND_NEXT_MATCH_DOWN)

		++match_start;

	else if (flag == FIND_NEXT_MATCH_UP)

		--match_start;



	index = match_start;

	index = (index + items_num) % items_num;

	while (true) {

		char *str = k_menu_items[index].str;

		if (strcasestr(str, match_str) != 0)

			return index;

		if (flag == FIND_NEXT_MATCH_UP ||

		    flag == MATCH_TINKER_PATTERN_UP)

			--index;

		else

			++index;

		index = (index + items_num) % items_num;

		if (index == match_start)

			return -1;

	for (; i < org_len; i++) {

		if (canbhot(org[i]) && org[i-1] != '<' && org[i-1] != '(') {

			position = i;

			break;

	}

}

	if (position == -1)

		return 1;



	/* ok, char at org[position] should be a hot key to this item */

	c = tolower(org[position]);

	tmp = hotkeys[c].count;

	hotkeys[c].ptrs[tmp] = index;

	hotkeys[c].count++;

	/*

	   snprintf(dest, len, "%.*s(%c)%s", position, org, org[position],

	   &org[position+1]);

	   */

	/* make org[position] uppercase, and all leading letter small case */

	strncpy(dest, org, len);

	for (i = 0; i < position; i++)

		dest[i] = tolower(dest[i]);

	dest[position] = toupper(dest[position]);

	k_menu_items[index].is_hot = 1;

	return 0;

}



/* Make a new item. Add a hotkey mark in the first possible letter.

 * As ncurses does not allow any attributes inside menue item, we mark the

 * hot key as the first capitalized letter in the string */

/* Make a new item. */

static void item_make(struct menu *menu, char tag, const char *fmt, ...)

{

	va_list ap;

	char tmp_str[256];



	if (items_num > MAX_MENU_ITEMS-1)

		return;
@@ -597,16 +544,13 @@ static void item_make(struct menu *menu, char tag, const char *fmt, ...) 
		k_menu_items[items_num].is_visible = 1;



	va_start(ap, fmt);

	vsnprintf(tmp_str, sizeof(tmp_str), fmt, ap);

	if (!k_menu_items[items_num].is_visible)

		memcpy(tmp_str, "XXX", 3);

	vsnprintf(k_menu_items[items_num].str,

		  sizeof(k_menu_items[items_num].str),

		  fmt, ap);

	va_end(ap);

	if (make_hot(

		k_menu_items[items_num].str,

		sizeof(k_menu_items[items_num].str), tmp_str, items_num) != 0)

		strncpy(k_menu_items[items_num].str,

			tmp_str,

			sizeof(k_menu_items[items_num].str));



	if (!k_menu_items[items_num].is_visible)

		memcpy(k_menu_items[items_num].str, "XXX", 3);



	curses_menu_items[items_num] = new_item(

			k_menu_items[items_num].str,
@@ -638,8 +582,6 @@ static void item_add_str(const char *fmt, ...) 
	va_end(ap);

	snprintf(tmp_str, sizeof(tmp_str), "%s%s",

			k_menu_items[index].str, new_str);

	if (make_hot(k_menu_items[index].str,

			sizeof(k_menu_items[index].str), tmp_str, index) != 0)

	strncpy(k_menu_items[index].str,

		tmp_str,

		sizeof(k_menu_items[index].str));
@@ -1027,23 +969,18 @@ static void reset_menu(void) 
static void center_item(int selected_index, int *last_top_row)

{

	int toprow;

	int maxy, maxx;



	scale_menu(curses_menu, &maxy, &maxx);

	set_top_row(curses_menu, *last_top_row);

	toprow = top_row(curses_menu);

	if (selected_index >= toprow && selected_index < toprow+maxy) {

		/* we can only move the selected item. no need to scroll */

		set_current_item(curses_menu,

				curses_menu_items[selected_index]);

	} else {

		toprow = max(selected_index-maxy/2, 0);

		if (toprow >= item_count(curses_menu)-maxy)

	if (selected_index < toprow ||

	    selected_index >= toprow+mwin_max_lines) {

		toprow = max(selected_index-mwin_max_lines/2, 0);

		if (toprow >= item_count(curses_menu)-mwin_max_lines)

			toprow = item_count(curses_menu)-mwin_max_lines;

		set_top_row(curses_menu, toprow);

	}

	set_current_item(curses_menu,

			curses_menu_items[selected_index]);

	}

	*last_top_row = toprow;

	post_menu(curses_menu);

	refresh_all_windows(main_window);
@@ -1075,7 +1012,7 @@ static void show_menu(const char *prompt, const char *instructions, 
	/* position the menu at the middle of the screen */

	scale_menu(curses_menu, &maxy, &maxx);

	maxx = min(maxx, mwin_max_cols-2);

	maxy = mwin_max_lines-2;

	maxy = mwin_max_lines;

	menu_window = derwin(main_window,

			maxy,

			maxx,
@@ -1099,10 +1036,77 @@ static void show_menu(const char *prompt, const char *instructions, 
	refresh_all_windows(main_window);

}



static void adj_match_dir(match_f *match_direction)

{

	if (*match_direction == FIND_NEXT_MATCH_DOWN)

		*match_direction =

			MATCH_TINKER_PATTERN_DOWN;

	else if (*match_direction == FIND_NEXT_MATCH_UP)

		*match_direction =

			MATCH_TINKER_PATTERN_UP;

	/* else, do no change.. */

}



static void conf(struct menu *menu)

struct match_state

{

	int in_search;

	match_f match_direction;

	char pattern[256];

};



/* Return 0 means I have handled the key. In such a case, ans should hold the

 * item to center, or -1 otherwise.

 * Else return -1 .

 */

static int do_match(int key, struct match_state *state, int *ans)

{

	char c = (char) key;

	int terminate_search = 0;

	*ans = -1;

	if (key == '/' || (state->in_search && key == 27)) {

		move(0, 0);

		refresh();

		clrtoeol();

		state->in_search = 1-state->in_search;

		bzero(state->pattern, sizeof(state->pattern));

		state->match_direction = MATCH_TINKER_PATTERN_DOWN;

		return 0;

	} else if (!state->in_search)

		return 1;



	if (isalnum(c) || isgraph(c) || c == ' ') {

		state->pattern[strlen(state->pattern)] = c;

		state->pattern[strlen(state->pattern)] = '\0';

		adj_match_dir(&state->match_direction);

		*ans = get_mext_match(state->pattern,

				state->match_direction);

	} else if (key == KEY_DOWN) {

		state->match_direction = FIND_NEXT_MATCH_DOWN;

		*ans = get_mext_match(state->pattern,

				state->match_direction);

	} else if (key == KEY_UP) {

		state->match_direction = FIND_NEXT_MATCH_UP;

		*ans = get_mext_match(state->pattern,

				state->match_direction);

	} else if (key == KEY_BACKSPACE || key == 127) {

		state->pattern[strlen(state->pattern)-1] = '\0';

		adj_match_dir(&state->match_direction);

	} else

		terminate_search = 1;



	if (terminate_search) {

		state->in_search = 0;

		bzero(state->pattern, sizeof(state->pattern));

		move(0, 0);

		refresh();

		clrtoeol();

		return -1;

	}

	return 0;

}



static void conf(struct menu *menu)

{

	struct menu *submenu = 0;

	const char *prompt = menu_get_prompt(menu);

	struct symbol *sym;
@@ -1110,8 +1114,11 @@ static void conf(struct menu *menu) 
	int res;

	int current_index = 0;

	int last_top_row = 0;



	bzero(pattern, sizeof(pattern));

	struct match_state match_state = {

		.in_search = 0,

		.match_direction = MATCH_TINKER_PATTERN_DOWN,

		.pattern = "",

	};



	while (!global_exit) {

		reset_menu();
@@ -1124,7 +1131,22 @@ static void conf(struct menu *menu) 
				_(menu_instructions),

				current_index, &last_top_row);

		keypad((menu_win(curses_menu)), TRUE);

		while (!global_exit && (res = wgetch(menu_win(curses_menu)))) {

		while (!global_exit) {

			if (match_state.in_search) {

				mvprintw(0, 0,

					"searching: %s", match_state.pattern);

				clrtoeol();

			}

			refresh_all_windows(main_window);

			res = wgetch(menu_win(curses_menu));

			if (!res)

				break;

			if (do_match(res, &match_state, &current_index) == 0) {

				if (current_index != -1)

					center_item(current_index,

						    &last_top_row);

				continue;

			}

			if (process_special_keys(&res,

						(struct menu *) item_data()))

				break;
@@ -1155,14 +1177,8 @@ static void conf(struct menu *menu) 
			if (res == 10 || res == 27 ||

				res == 32 || res == 'n' || res == 'y' ||

				res == KEY_LEFT || res == KEY_RIGHT ||

				res == 'm' || res == '/')

				res == 'm')

				break;

			else if (canbhot(res)) {

				/* check for hot keys: */

				int tmp = get_next_hot(res);

				if (tmp != -1)

					center_item(tmp, &last_top_row);

			}

			refresh_all_windows(main_window);

		}
@@ -1235,9 +1251,6 @@ static void conf(struct menu *menu) 
			if (item_is_tag('t'))

				sym_set_tristate_value(sym, mod);

			break;

		case '/':

			search_conf();

			break;

		}

	}

}
@@ -1268,6 +1281,11 @@ static void conf_choice(struct menu *menu) 
	int selected_index = 0;

	int last_top_row = 0;

	int res, i = 0;

	struct match_state match_state = {

		.in_search = 0,

		.match_direction = MATCH_TINKER_PATTERN_DOWN,

		.pattern = "",

	};



	active = sym_get_choice_value(menu->sym);

	/* this is mostly duplicated from the conf() function. */
@@ -1294,7 +1312,22 @@ static void conf_choice(struct menu *menu) 
				_(radiolist_instructions),

				selected_index,

				&last_top_row);

		while (!global_exit && (res = wgetch(menu_win(curses_menu)))) {

		while (!global_exit) {

			if (match_state.in_search) {

				mvprintw(0, 0, "searching: %s",

					 match_state.pattern);

				clrtoeol();

			}

			refresh_all_windows(main_window);

			res = wgetch(menu_win(curses_menu));

			if (!res)

				break;

			if (do_match(res, &match_state, &selected_index) == 0) {

				if (selected_index != -1)

					center_item(selected_index,

						    &last_top_row);

				continue;

			}

			if (process_special_keys(

						&res,

						(struct menu *) item_data()))
@@ -1324,13 +1357,8 @@ static void conf_choice(struct menu *menu) 
				break;

			}

			if (res == 10 || res == 27 || res == ' ' ||

				res == KEY_LEFT)

					res == KEY_LEFT){

				break;

			else if (canbhot(res)) {

				/* check for hot keys: */

				int tmp = get_next_hot(res);

				if (tmp != -1)

					center_item(tmp, &last_top_row);

			}

			refresh_all_windows(main_window);

		}
@@ -1485,7 +1513,7 @@ void setup_windows(void) 
	/* set up the menu and menu window */

	main_window = newwin(LINES-2, COLS-2, 2, 1);

	keypad(main_window, TRUE);

	mwin_max_lines = LINES-6;

	mwin_max_lines = LINES-7;

	mwin_max_cols = COLS-6;



	/* panels order is from bottom to top */
@@ -1532,9 +1560,10 @@ int main(int ac, char **av) 
	/* set btns menu */

	curses_menu = new_menu(curses_menu_items);

	menu_opts_off(curses_menu, O_SHOWDESC);

	menu_opts_off(curses_menu, O_SHOWMATCH);

	menu_opts_on(curses_menu, O_SHOWMATCH);

	menu_opts_on(curses_menu, O_ONEVALUE);

	menu_opts_on(curses_menu, O_NONCYCLIC);

	menu_opts_on(curses_menu, O_IGNORECASE);

	set_menu_mark(curses_menu, " ");

	set_menu_fore(curses_menu, attributes[MAIN_MENU_FORE]);

	set_menu_back(curses_menu, attributes[MAIN_MENU_BACK]);
@@ -1550,8 +1579,6 @@ int main(int ac, char **av) 
				_(menu_no_f_instructions));

	}







	/* do the work */

	while (!global_exit) {

		conf(&rootmenu);

scripts/kconfig/nconf.gui.c

+10 −10
Original line number Diff line number Diff line
@@ -167,7 +167,7 @@ void print_in_middle(WINDOW *win, 
	length = strlen(string);

	temp = (width - length) / 2;

	x = startx + (int)temp;

	wattrset(win, color);

	(void) wattrset(win, color);

	mvwprintw(win, y, x, "%s", string);

	refresh();

}
@@ -297,11 +297,11 @@ int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...) 
	set_menu_fore(menu, attributes[DIALOG_MENU_FORE]);

	set_menu_back(menu, attributes[DIALOG_MENU_BACK]);



	wattrset(win, attributes[DIALOG_BOX]);

	(void) wattrset(win, attributes[DIALOG_BOX]);

	box(win, 0, 0);



	/* print message */

	wattrset(msg_win, attributes[DIALOG_TEXT]);

	(void) wattrset(msg_win, attributes[DIALOG_TEXT]);

	fill_window(msg_win, msg);



	set_menu_win(menu, win);
@@ -392,16 +392,16 @@ int dialog_inputbox(WINDOW *main_window, 
	form_win = derwin(win, 1, prompt_width, prompt_lines+3, 2);

	keypad(form_win, TRUE);



	wattrset(form_win, attributes[INPUT_FIELD]);

	(void) wattrset(form_win, attributes[INPUT_FIELD]);



	wattrset(win, attributes[INPUT_BOX]);

	(void) wattrset(win, attributes[INPUT_BOX]);

	box(win, 0, 0);

	wattrset(win, attributes[INPUT_HEADING]);

	(void) wattrset(win, attributes[INPUT_HEADING]);

	if (title)

		mvwprintw(win, 0, 3, "%s", title);



	/* print message */

	wattrset(prompt_win, attributes[INPUT_TEXT]);

	(void) wattrset(prompt_win, attributes[INPUT_TEXT]);

	fill_window(prompt_win, prompt);



	mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
@@ -531,7 +531,7 @@ void show_scroll_win(WINDOW *main_window, 


	/* create the pad */

	pad = newpad(total_lines+10, total_cols+10);

	wattrset(pad, attributes[SCROLLWIN_TEXT]);

	(void) wattrset(pad, attributes[SCROLLWIN_TEXT]);

	fill_window(pad, text);



	win_lines = min(total_lines+4, LINES-2);
@@ -546,9 +546,9 @@ void show_scroll_win(WINDOW *main_window, 
	win = newwin(win_lines, win_cols, y, x);

	keypad(win, TRUE);

	/* show the help in the help window, and show the help panel */

	wattrset(win, attributes[SCROLLWIN_BOX]);

	(void) wattrset(win, attributes[SCROLLWIN_BOX]);

	box(win, 0, 0);

	wattrset(win, attributes[SCROLLWIN_HEADING]);

	(void) wattrset(win, attributes[SCROLLWIN_HEADING]);

	mvwprintw(win, 0, 3, " %s ", title);

	panel = new_panel(win);

scripts/kconfig/nconf.h

+2 −1
Original line number Diff line number Diff line
@@ -69,7 +69,8 @@ typedef enum { 
	F_BACK = 5,

	F_SAVE = 6,

	F_LOAD = 7,

	F_EXIT = 8

	F_SEARCH = 8,

	F_EXIT = 9,

} function_key;



void set_colors(void);