xref: /linux/scripts/kconfig/nconf.c (revision b8e4b0529d59a3ccd0b25a31d3cfc8b0f3b34068)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com>
4  *
5  * Derived from menuconfig.
6  */
7 #ifndef _GNU_SOURCE
8 #define _GNU_SOURCE
9 #endif
10 #include <string.h>
11 #include <strings.h>
12 #include <stdlib.h>
13 
14 #include <list.h>
15 #include "lkc.h"
16 #include "mnconf-common.h"
17 #include "nconf.h"
18 #include <ctype.h>
19 
20 static const char nconf_global_help[] =
21 "Help windows\n"
22 "------------\n"
23 "o  Global help:  Unless in a data entry window, pressing <F1> will give \n"
24 "   you the global help window, which you are just reading.\n"
25 "\n"
26 "o  A short version of the global help is available by pressing <F3>.\n"
27 "\n"
28 "o  Local help:  To get help related to the current menu entry, use any\n"
29 "   of <?> <h>, or if in a data entry window then press <F1>.\n"
30 "\n"
31 "\n"
32 "Menu entries\n"
33 "------------\n"
34 "This interface lets you select features and parameters for the kernel\n"
35 "build.  Kernel features can either be built-in, modularized, or removed.\n"
36 "Parameters must be entered as text or decimal or hexadecimal numbers.\n"
37 "\n"
38 "Menu entries beginning with following braces represent features that\n"
39 "  [ ]  can be built in or removed\n"
40 "  < >  can be built in, modularized or removed\n"
41 "  { }  can be built in or modularized, are selected by another feature\n"
42 "  - -  are selected by another feature\n"
43 "  XXX  cannot be selected.  Symbol Info <F2> tells you why.\n"
44 "*, M or whitespace inside braces means to build in, build as a module\n"
45 "or to exclude the feature respectively.\n"
46 "\n"
47 "To change any of these features, highlight it with the movement keys\n"
48 "listed below and press <y> to build it in, <m> to make it a module or\n"
49 "<n> to remove it.  You may press the <Space> key to cycle through the\n"
50 "available options.\n"
51 "\n"
52 "A trailing \"--->\" designates a submenu, a trailing \"----\" an\n"
53 "empty submenu.\n"
54 "\n"
55 "Menu navigation keys\n"
56 "----------------------------------------------------------------------\n"
57 "Linewise up                 <Up>    <k>\n"
58 "Linewise down               <Down>  <j>\n"
59 "Pagewise up                 <Page Up>\n"
60 "Pagewise down               <Page Down>\n"
61 "First entry                 <Home>\n"
62 "Last entry                  <End>\n"
63 "Enter a submenu             <Right>  <Enter>\n"
64 "Go back to parent menu      <Left>   <Esc>  <F5>\n"
65 "Close a help window         <Enter>  <Esc>  <F5>\n"
66 "Close entry window, apply   <Enter>\n"
67 "Close entry window, forget  <Esc>  <F5>\n"
68 "Start incremental, case-insensitive search for STRING in menu entries,\n"
69 "    no regex support, STRING is displayed in upper left corner\n"
70 "                            </>STRING\n"
71 "    Remove last character   <Backspace>\n"
72 "    Jump to next hit        <Down>\n"
73 "    Jump to previous hit    <Up>\n"
74 "Exit menu search mode       </>  <Esc>\n"
75 "Search for configuration variables with or without leading CONFIG_\n"
76 "                            <F8>RegExpr<Enter>\n"
77 "Verbose search help         <F8><F1>\n"
78 "----------------------------------------------------------------------\n"
79 "\n"
80 "Unless in a data entry window, key <1> may be used instead of <F1>,\n"
81 "<2> instead of <F2>, etc.\n"
82 "\n"
83 "\n"
84 "Radiolist (Choice list)\n"
85 "-----------------------\n"
86 "Use the movement keys listed above to select the option you wish to set\n"
87 "and press <Space>.\n"
88 "\n"
89 "\n"
90 "Data entry\n"
91 "----------\n"
92 "Enter the requested information and press <Enter>.  Hexadecimal values\n"
93 "may be entered without the \"0x\" prefix.\n"
94 "\n"
95 "\n"
96 "Text Box (Help Window)\n"
97 "----------------------\n"
98 "Use movement keys as listed in table above.\n"
99 "\n"
100 "Press any of <Enter> <Esc> <q> <F5> <F9> to exit.\n"
101 "\n"
102 "\n"
103 "Alternate configuration files\n"
104 "-----------------------------\n"
105 "nconfig supports switching between different configurations.\n"
106 "Press <F6> to save your current configuration.  Press <F7> and enter\n"
107 "a file name to load a previously saved configuration.\n"
108 "\n"
109 "\n"
110 "Terminal configuration\n"
111 "----------------------\n"
112 "If you use nconfig in a xterm window, make sure your TERM environment\n"
113 "variable specifies a terminal configuration which supports at least\n"
114 "16 colors.  Otherwise nconfig will look rather bad.\n"
115 "\n"
116 "If the \"stty size\" command reports the current terminalsize correctly,\n"
117 "nconfig will adapt to sizes larger than the traditional 80x25 \"standard\"\n"
118 "and display longer menus properly.\n"
119 "\n"
120 "\n"
121 "Single menu mode\n"
122 "----------------\n"
123 "If you prefer to have all of the menu entries listed in a single menu,\n"
124 "rather than the default multimenu hierarchy, run nconfig with\n"
125 "NCONFIG_MODE environment variable set to single_menu.  Example:\n"
126 "\n"
127 "make NCONFIG_MODE=single_menu nconfig\n"
128 "\n"
129 "<Enter> will then unfold the appropriate category, or fold it if it\n"
130 "is already unfolded.  Folded menu entries will be designated by a\n"
131 "leading \"++>\" and unfolded entries by a leading \"-->\".\n"
132 "\n"
133 "Note that this mode can eventually be a little more CPU expensive than\n"
134 "the default mode, especially with a larger number of unfolded submenus.\n"
135 "\n",
136 menu_no_f_instructions[] =
137 "Legend:  [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
138 "Submenus are designated by a trailing \"--->\", empty ones by \"----\".\n"
139 "\n"
140 "Use the following keys to navigate the menus:\n"
141 "Move up or down with <Up> and <Down>.\n"
142 "Enter a submenu with <Enter> or <Right>.\n"
143 "Exit a submenu to its parent menu with <Esc> or <Left>.\n"
144 "Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
145 "Pressing <Space> cycles through the available options.\n"
146 "To search for menu entries press </>.\n"
147 "<Esc> always leaves the current window.\n"
148 "\n"
149 "You do not have function keys support.\n"
150 "Press <1> instead of <F1>, <2> instead of <F2>, etc.\n"
151 "For verbose global help use key <1>.\n"
152 "For help related to the current menu entry press <?> or <h>.\n",
153 menu_instructions[] =
154 "Legend:  [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
155 "Submenus are designated by a trailing \"--->\", empty ones by \"----\".\n"
156 "\n"
157 "Use the following keys to navigate the menus:\n"
158 "Move up or down with <Up> or <Down>.\n"
159 "Enter a submenu with <Enter> or <Right>.\n"
160 "Exit a submenu to its parent menu with <Esc> or <Left>.\n"
161 "Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
162 "Pressing <Space> cycles through the available options.\n"
163 "To search for menu entries press </>.\n"
164 "<Esc> always leaves the current window.\n"
165 "\n"
166 "Pressing <1> may be used instead of <F1>, <2> instead of <F2>, etc.\n"
167 "For verbose global help press <F1>.\n"
168 "For help related to the current menu entry press <?> or <h>.\n",
169 radiolist_instructions[] =
170 "Press <Up>, <Down>, <Home> or <End> to navigate a radiolist, select\n"
171 "with <Space>.\n"
172 "For help related to the current entry press <?> or <h>.\n"
173 "For global help press <F1>.\n",
174 inputbox_instructions_int[] =
175 "Please enter a decimal value.\n"
176 "Fractions will not be accepted.\n"
177 "Press <Enter> to apply, <Esc> to cancel.",
178 inputbox_instructions_hex[] =
179 "Please enter a hexadecimal value.\n"
180 "Press <Enter> to apply, <Esc> to cancel.",
181 inputbox_instructions_string[] =
182 "Please enter a string value.\n"
183 "Press <Enter> to apply, <Esc> to cancel.",
184 setmod_text[] =
185 "This feature depends on another feature which has been configured as a\n"
186 "module.  As a result, the current feature will be built as a module too.",
187 load_config_text[] =
188 "Enter the name of the configuration file you wish to load.\n"
189 "Accept the name shown to restore the configuration you last\n"
190 "retrieved.  Leave empty to abort.",
191 load_config_help[] =
192 "For various reasons, one may wish to keep several different\n"
193 "configurations available on a single machine.\n"
194 "\n"
195 "If you have saved a previous configuration in a file other than the\n"
196 "default one, entering its name here will allow you to load and modify\n"
197 "that configuration.\n"
198 "\n"
199 "Leave empty to abort.\n",
200 save_config_text[] =
201 "Enter a filename to which this configuration should be saved\n"
202 "as an alternate.  Leave empty to abort.",
203 save_config_help[] =
204 "For various reasons, one may wish to keep several different\n"
205 "configurations available on a single machine.\n"
206 "\n"
207 "Entering a file name here will allow you to later retrieve, modify\n"
208 "and use the current configuration as an alternate to whatever\n"
209 "configuration options you have selected at that time.\n"
210 "\n"
211 "Leave empty to abort.\n",
212 search_help[] =
213 "Search for symbols (configuration variable names CONFIG_*) and display\n"
214 "their relations.  Regular expressions are supported.\n"
215 "Example:  Search for \"^FOO\".\n"
216 "Result:\n"
217 "-----------------------------------------------------------------\n"
218 "Symbol: FOO [ = m]\n"
219 "Prompt: Foo bus is used to drive the bar HW\n"
220 "Defined at drivers/pci/Kconfig:47\n"
221 "Depends on: X86_LOCAL_APIC && X86_IO_APIC\n"
222 "Location:\n"
223 "  -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
224 "    -> PCI support (PCI [ = y])\n"
225 "(1)   -> PCI access mode (<choice> [ = y])\n"
226 "Selects: LIBCRC32\n"
227 "Selected by: BAR\n"
228 "-----------------------------------------------------------------\n"
229 "o  The line 'Prompt:' shows the text displayed for this symbol in\n"
230 "   the menu hierarchy.\n"
231 "o  The 'Defined at' line tells at what file / line number the symbol is\n"
232 "   defined.\n"
233 "o  The 'Depends on:' line lists symbols that need to be defined for\n"
234 "   this symbol to be visible and selectable in the menu.\n"
235 "o  The 'Location:' lines tell, where in the menu structure this symbol\n"
236 "   is located.\n"
237 "     A location followed by a [ = y] indicates that this is\n"
238 "     a selectable menu item, and the current value is displayed inside\n"
239 "     brackets.\n"
240 "     Press the key in the (#) prefix to jump directly to that\n"
241 "     location. You will be returned to the current search results\n"
242 "     after exiting this new menu.\n"
243 "o  The 'Selects:' line tells, what symbol will be automatically selected\n"
244 "   if this symbol is selected (y or m).\n"
245 "o  The 'Selected by' line tells what symbol has selected this symbol.\n"
246 "\n"
247 "Only relevant lines are shown.\n"
248 "\n\n"
249 "Search examples:\n"
250 "USB  => find all symbols containing USB\n"
251 "^USB => find all symbols starting with USB\n"
252 "USB$ => find all symbols ending with USB\n"
253 "\n";
254 
255 struct mitem {
256 	char str[256];
257 	char tag;
258 	void *usrptr;
259 	int is_visible;
260 };
261 
262 #define MAX_MENU_ITEMS 4096
263 static int show_all_items;
264 static int indent;
265 static struct menu *current_menu;
266 static int child_count;
267 static int single_menu_mode;
268 /* the window in which all information appears */
269 static WINDOW *main_window;
270 /* the largest size of the menu window */
271 static int mwin_max_lines;
272 static int mwin_max_cols;
273 /* the window in which we show option buttons */
274 static MENU *curses_menu;
275 static ITEM *curses_menu_items[MAX_MENU_ITEMS];
276 static struct mitem k_menu_items[MAX_MENU_ITEMS];
277 static unsigned int items_num;
278 static int global_exit;
279 /* the currently selected button */
280 static const char *current_instructions = menu_instructions;
281 
282 static char *dialog_input_result;
283 static int dialog_input_result_len;
284 
285 static void selected_conf(struct menu *menu, struct menu *active_menu);
286 static void conf(struct menu *menu);
287 static void conf_choice(struct menu *menu);
288 static void conf_string(struct menu *menu);
289 static void conf_load(void);
290 static void conf_save(void);
291 static void show_help(struct menu *menu);
292 static int do_exit(void);
293 static void setup_windows(void);
294 static void search_conf(void);
295 
296 typedef void (*function_key_handler_t)(int *key, struct menu *menu);
297 static void handle_f1(int *key, struct menu *current_item);
298 static void handle_f2(int *key, struct menu *current_item);
299 static void handle_f3(int *key, struct menu *current_item);
300 static void handle_f4(int *key, struct menu *current_item);
301 static void handle_f5(int *key, struct menu *current_item);
302 static void handle_f6(int *key, struct menu *current_item);
303 static void handle_f7(int *key, struct menu *current_item);
304 static void handle_f8(int *key, struct menu *current_item);
305 static void handle_f9(int *key, struct menu *current_item);
306 
307 struct function_keys {
308 	const char *key_str;
309 	const char *func;
310 	function_key key;
311 	function_key_handler_t handler;
312 };
313 
314 static const int function_keys_num = 9;
315 static struct function_keys function_keys[] = {
316 	{
317 		.key_str = "F1",
318 		.func = "Help",
319 		.key = F_HELP,
320 		.handler = handle_f1,
321 	},
322 	{
323 		.key_str = "F2",
324 		.func = "SymInfo",
325 		.key = F_SYMBOL,
326 		.handler = handle_f2,
327 	},
328 	{
329 		.key_str = "F3",
330 		.func = "Help 2",
331 		.key = F_INSTS,
332 		.handler = handle_f3,
333 	},
334 	{
335 		.key_str = "F4",
336 		.func = "ShowAll",
337 		.key = F_CONF,
338 		.handler = handle_f4,
339 	},
340 	{
341 		.key_str = "F5",
342 		.func = "Back",
343 		.key = F_BACK,
344 		.handler = handle_f5,
345 	},
346 	{
347 		.key_str = "F6",
348 		.func = "Save",
349 		.key = F_SAVE,
350 		.handler = handle_f6,
351 	},
352 	{
353 		.key_str = "F7",
354 		.func = "Load",
355 		.key = F_LOAD,
356 		.handler = handle_f7,
357 	},
358 	{
359 		.key_str = "F8",
360 		.func = "SymSearch",
361 		.key = F_SEARCH,
362 		.handler = handle_f8,
363 	},
364 	{
365 		.key_str = "F9",
366 		.func = "Exit",
367 		.key = F_EXIT,
368 		.handler = handle_f9,
369 	},
370 };
371 
372 static void print_function_line(void)
373 {
374 	int i;
375 	int offset = 1;
376 	const int skip = 1;
377 	int lines = getmaxy(stdscr);
378 
379 	for (i = 0; i < function_keys_num; i++) {
380 		wattrset(main_window, attr_function_highlight);
381 		mvwprintw(main_window, lines-3, offset,
382 				"%s",
383 				function_keys[i].key_str);
384 		wattrset(main_window, attr_function_text);
385 		offset += strlen(function_keys[i].key_str);
386 		mvwprintw(main_window, lines-3,
387 				offset, "%s",
388 				function_keys[i].func);
389 		offset += strlen(function_keys[i].func) + skip;
390 	}
391 	wattrset(main_window, attr_normal);
392 }
393 
394 /* help */
395 static void handle_f1(int *key, struct menu *current_item)
396 {
397 	show_scroll_win(main_window,
398 			"Global help", nconf_global_help);
399 	return;
400 }
401 
402 /* symbole help */
403 static void handle_f2(int *key, struct menu *current_item)
404 {
405 	show_help(current_item);
406 	return;
407 }
408 
409 /* instructions */
410 static void handle_f3(int *key, struct menu *current_item)
411 {
412 	show_scroll_win(main_window,
413 			"Short help",
414 			current_instructions);
415 	return;
416 }
417 
418 /* config */
419 static void handle_f4(int *key, struct menu *current_item)
420 {
421 	int res = btn_dialog(main_window,
422 			"Show all symbols?",
423 			2,
424 			"   <Show All>   ",
425 			"<Don't show all>");
426 	if (res == 0)
427 		show_all_items = 1;
428 	else if (res == 1)
429 		show_all_items = 0;
430 
431 	return;
432 }
433 
434 /* back */
435 static void handle_f5(int *key, struct menu *current_item)
436 {
437 	*key = KEY_LEFT;
438 	return;
439 }
440 
441 /* save */
442 static void handle_f6(int *key, struct menu *current_item)
443 {
444 	conf_save();
445 	return;
446 }
447 
448 /* load */
449 static void handle_f7(int *key, struct menu *current_item)
450 {
451 	conf_load();
452 	return;
453 }
454 
455 /* search */
456 static void handle_f8(int *key, struct menu *current_item)
457 {
458 	search_conf();
459 	return;
460 }
461 
462 /* exit */
463 static void handle_f9(int *key, struct menu *current_item)
464 {
465 	do_exit();
466 	return;
467 }
468 
469 /* return != 0 to indicate the key was handles */
470 static int process_special_keys(int *key, struct menu *menu)
471 {
472 	int i;
473 
474 	if (*key == KEY_RESIZE) {
475 		setup_windows();
476 		return 1;
477 	}
478 
479 	for (i = 0; i < function_keys_num; i++) {
480 		if (*key == KEY_F(function_keys[i].key) ||
481 		    *key == '0' + function_keys[i].key){
482 			function_keys[i].handler(key, menu);
483 			return 1;
484 		}
485 	}
486 
487 	return 0;
488 }
489 
490 static void clean_items(void)
491 {
492 	int i;
493 	for (i = 0; curses_menu_items[i]; i++)
494 		free_item(curses_menu_items[i]);
495 	bzero(curses_menu_items, sizeof(curses_menu_items));
496 	bzero(k_menu_items, sizeof(k_menu_items));
497 	items_num = 0;
498 }
499 
500 typedef enum {MATCH_TINKER_PATTERN_UP, MATCH_TINKER_PATTERN_DOWN,
501 	FIND_NEXT_MATCH_DOWN, FIND_NEXT_MATCH_UP} match_f;
502 
503 /* return the index of the matched item, or -1 if no such item exists */
504 static int get_mext_match(const char *match_str, match_f flag)
505 {
506 	int match_start, index;
507 
508 	/* Do not search if the menu is empty (i.e. items_num == 0) */
509 	match_start = item_index(current_item(curses_menu));
510 	if (match_start == ERR)
511 		return -1;
512 
513 	if (flag == FIND_NEXT_MATCH_DOWN)
514 		++match_start;
515 	else if (flag == FIND_NEXT_MATCH_UP)
516 		--match_start;
517 
518 	match_start = (match_start + items_num) % items_num;
519 	index = match_start;
520 	while (true) {
521 		char *str = k_menu_items[index].str;
522 		if (strcasestr(str, match_str) != NULL)
523 			return index;
524 		if (flag == FIND_NEXT_MATCH_UP ||
525 		    flag == MATCH_TINKER_PATTERN_UP)
526 			--index;
527 		else
528 			++index;
529 		index = (index + items_num) % items_num;
530 		if (index == match_start)
531 			return -1;
532 	}
533 }
534 
535 /* Make a new item. */
536 static void item_make(struct menu *menu, char tag, const char *fmt, ...)
537 {
538 	va_list ap;
539 
540 	if (items_num > MAX_MENU_ITEMS-1)
541 		return;
542 
543 	bzero(&k_menu_items[items_num], sizeof(k_menu_items[0]));
544 	k_menu_items[items_num].tag = tag;
545 	k_menu_items[items_num].usrptr = menu;
546 	if (menu != NULL)
547 		k_menu_items[items_num].is_visible =
548 			menu_is_visible(menu);
549 	else
550 		k_menu_items[items_num].is_visible = 1;
551 
552 	va_start(ap, fmt);
553 	vsnprintf(k_menu_items[items_num].str,
554 		  sizeof(k_menu_items[items_num].str),
555 		  fmt, ap);
556 	va_end(ap);
557 
558 	if (!k_menu_items[items_num].is_visible)
559 		memcpy(k_menu_items[items_num].str, "XXX", 3);
560 
561 	curses_menu_items[items_num] = new_item(
562 			k_menu_items[items_num].str,
563 			k_menu_items[items_num].str);
564 	set_item_userptr(curses_menu_items[items_num],
565 			&k_menu_items[items_num]);
566 	/*
567 	if (!k_menu_items[items_num].is_visible)
568 		item_opts_off(curses_menu_items[items_num], O_SELECTABLE);
569 	*/
570 
571 	items_num++;
572 	curses_menu_items[items_num] = NULL;
573 }
574 
575 /* very hackish. adds a string to the last item added */
576 static void item_add_str(const char *fmt, ...)
577 {
578 	va_list ap;
579 	int index = items_num-1;
580 	char new_str[256];
581 	char tmp_str[256];
582 
583 	if (index < 0)
584 		return;
585 
586 	va_start(ap, fmt);
587 	vsnprintf(new_str, sizeof(new_str), fmt, ap);
588 	va_end(ap);
589 	snprintf(tmp_str, sizeof(tmp_str), "%s%s",
590 			k_menu_items[index].str, new_str);
591 	strncpy(k_menu_items[index].str,
592 		tmp_str,
593 		sizeof(k_menu_items[index].str));
594 
595 	free_item(curses_menu_items[index]);
596 	curses_menu_items[index] = new_item(
597 			k_menu_items[index].str,
598 			k_menu_items[index].str);
599 	set_item_userptr(curses_menu_items[index],
600 			&k_menu_items[index]);
601 }
602 
603 /* get the tag of the currently selected item */
604 static char item_tag(void)
605 {
606 	ITEM *cur;
607 	struct mitem *mcur;
608 
609 	cur = current_item(curses_menu);
610 	if (cur == NULL)
611 		return 0;
612 	mcur = (struct mitem *) item_userptr(cur);
613 	return mcur->tag;
614 }
615 
616 static int curses_item_index(void)
617 {
618 	return  item_index(current_item(curses_menu));
619 }
620 
621 static void *item_data(void)
622 {
623 	ITEM *cur;
624 	struct mitem *mcur;
625 
626 	cur = current_item(curses_menu);
627 	if (!cur)
628 		return NULL;
629 	mcur = (struct mitem *) item_userptr(cur);
630 	return mcur->usrptr;
631 
632 }
633 
634 static int item_is_tag(char tag)
635 {
636 	return item_tag() == tag;
637 }
638 
639 static char filename[PATH_MAX+1];
640 static char menu_backtitle[PATH_MAX+128];
641 static void set_config_filename(const char *config_filename)
642 {
643 	snprintf(menu_backtitle, sizeof(menu_backtitle), "%s - %s",
644 		 config_filename, rootmenu.prompt->text);
645 
646 	snprintf(filename, sizeof(filename), "%s", config_filename);
647 }
648 
649 /* return = 0 means we are successful.
650  * -1 means go on doing what you were doing
651  */
652 static int do_exit(void)
653 {
654 	int res;
655 	if (!conf_get_changed()) {
656 		global_exit = 1;
657 		return 0;
658 	}
659 	res = btn_dialog(main_window,
660 			"Do you wish to save your new configuration?\n"
661 				"<ESC> to cancel and resume nconfig.",
662 			2,
663 			"   <save>   ",
664 			"<don't save>");
665 	if (res == KEY_EXIT) {
666 		global_exit = 0;
667 		return -1;
668 	}
669 
670 	/* if we got here, the user really wants to exit */
671 	switch (res) {
672 	case 0:
673 		res = conf_write(filename);
674 		if (res)
675 			btn_dialog(
676 				main_window,
677 				"Error during writing of configuration.\n"
678 				  "Your configuration changes were NOT saved.",
679 				  1,
680 				  "<OK>");
681 		conf_write_autoconf(0);
682 		break;
683 	default:
684 		btn_dialog(
685 			main_window,
686 			"Your configuration changes were NOT saved.",
687 			1,
688 			"<OK>");
689 		break;
690 	}
691 	global_exit = 1;
692 	return 0;
693 }
694 
695 
696 static void search_conf(void)
697 {
698 	struct symbol **sym_arr;
699 	struct gstr res;
700 	struct gstr title;
701 	char *dialog_input;
702 	int dres, vscroll = 0, hscroll = 0;
703 	bool again;
704 
705 	title = str_new();
706 	str_printf( &title, "Enter (sub)string or regexp to search for "
707 			      "(with or without \"%s\")", CONFIG_);
708 
709 again:
710 	dres = dialog_inputbox(main_window,
711 			"Search Configuration Parameter",
712 			str_get(&title),
713 			"", &dialog_input_result, &dialog_input_result_len);
714 	switch (dres) {
715 	case 0:
716 		break;
717 	case 1:
718 		show_scroll_win(main_window,
719 				"Search Configuration", search_help);
720 		goto again;
721 	default:
722 		str_free(&title);
723 		return;
724 	}
725 
726 	/* strip the prefix if necessary */
727 	dialog_input = dialog_input_result;
728 	if (strncasecmp(dialog_input_result, CONFIG_, strlen(CONFIG_)) == 0)
729 		dialog_input += strlen(CONFIG_);
730 
731 	sym_arr = sym_re_search(dialog_input);
732 
733 	do {
734 		LIST_HEAD(head);
735 		struct search_data data = {
736 			.head = &head,
737 			.target = NULL,
738 		};
739 		jump_key_char = 0;
740 		res = get_relations_str(sym_arr, &head);
741 		dres = show_scroll_win_ext(main_window,
742 				"Search Results", str_get(&res),
743 				&vscroll, &hscroll,
744 				handle_search_keys, &data);
745 		again = false;
746 		if (dres >= '1' && dres <= '9') {
747 			assert(data.target != NULL);
748 			selected_conf(data.target->parent, data.target);
749 			again = true;
750 		}
751 		str_free(&res);
752 	} while (again);
753 	free(sym_arr);
754 	str_free(&title);
755 }
756 
757 
758 static void build_conf(struct menu *menu)
759 {
760 	struct symbol *sym;
761 	struct property *prop;
762 	struct menu *child;
763 	int type, tmp, doint = 2;
764 	tristate val;
765 	char ch;
766 
767 	if (!menu || (!show_all_items && !menu_is_visible(menu)))
768 		return;
769 
770 	sym = menu->sym;
771 	prop = menu->prompt;
772 	if (!sym) {
773 		if (prop && menu != current_menu) {
774 			const char *prompt = menu_get_prompt(menu);
775 			enum prop_type ptype;
776 			ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
777 			switch (ptype) {
778 			case P_MENU:
779 				child_count++;
780 				if (single_menu_mode) {
781 					item_make(menu, 'm',
782 						"%s%*c%s",
783 						menu->data ? "-->" : "++>",
784 						indent + 1, ' ', prompt);
785 				} else
786 					item_make(menu, 'm',
787 						  "   %*c%s  %s",
788 						  indent + 1, ' ', prompt,
789 						  menu_is_empty(menu) ? "----" : "--->");
790 
791 				if (single_menu_mode && menu->data)
792 					goto conf_childs;
793 				return;
794 			case P_COMMENT:
795 				if (prompt) {
796 					child_count++;
797 					item_make(menu, ':',
798 						"   %*c*** %s ***",
799 						indent + 1, ' ',
800 						prompt);
801 				}
802 				break;
803 			default:
804 				if (prompt) {
805 					child_count++;
806 					item_make(menu, ':', "---%*c%s",
807 						indent + 1, ' ',
808 						prompt);
809 				}
810 			}
811 		} else
812 			doint = 0;
813 		goto conf_childs;
814 	}
815 
816 	type = sym_get_type(sym);
817 	if (sym_is_choice(sym)) {
818 		struct symbol *def_sym = sym_calc_choice(menu);
819 		struct menu *def_menu = NULL;
820 
821 		child_count++;
822 		for (child = menu->list; child; child = child->next) {
823 			if (menu_is_visible(child) && child->sym == def_sym)
824 				def_menu = child;
825 		}
826 
827 		val = sym_get_tristate_value(sym);
828 		item_make(menu, def_menu ? 't' : ':', "   ");
829 
830 		item_add_str("%*c%s", indent + 1,
831 				' ', menu_get_prompt(menu));
832 		if (def_menu)
833 			item_add_str(" (%s)  --->", menu_get_prompt(def_menu));
834 		return;
835 	} else {
836 		if (menu == current_menu) {
837 			item_make(menu, ':',
838 				"---%*c%s", indent + 1,
839 				' ', menu_get_prompt(menu));
840 			goto conf_childs;
841 		}
842 		child_count++;
843 		val = sym_get_tristate_value(sym);
844 		switch (type) {
845 		case S_BOOLEAN:
846 			if (sym_is_changeable(sym))
847 				item_make(menu, 't', "[%c]",
848 					  val == no ? ' ' : '*');
849 			else
850 				item_make(menu, 't', "-%c-",
851 					  val == no ? ' ' : '*');
852 			break;
853 		case S_TRISTATE:
854 			switch (val) {
855 			case yes:
856 				ch = '*';
857 				break;
858 			case mod:
859 				ch = 'M';
860 				break;
861 			default:
862 				ch = ' ';
863 				break;
864 			}
865 			if (sym_is_changeable(sym)) {
866 				if (sym->rev_dep.tri == mod)
867 					item_make(menu, 't', "{%c}", ch);
868 				else
869 					item_make(menu, 't', "<%c>", ch);
870 			} else
871 				item_make(menu, 't', "-%c-", ch);
872 			break;
873 		default:
874 			tmp = 2 + strlen(sym_get_string_value(sym));
875 			item_make(menu, 's', "    (%s)",
876 				  sym_get_string_value(sym));
877 			tmp = indent - tmp + 4;
878 			if (tmp < 0)
879 				tmp = 0;
880 			item_add_str("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
881 				     (sym_has_value(sym) ||
882 				      !sym_is_changeable(sym)) ? "" : " (NEW)");
883 			goto conf_childs;
884 		}
885 		item_add_str("%*c%s%s", indent + 1, ' ',
886 				menu_get_prompt(menu),
887 				(sym_has_value(sym) || !sym_is_changeable(sym)) ?
888 				"" : " (NEW)");
889 		if (menu->prompt && menu->prompt->type == P_MENU) {
890 			item_add_str("  %s", menu_is_empty(menu) ? "----" : "--->");
891 			return;
892 		}
893 	}
894 
895 conf_childs:
896 	indent += doint;
897 	for (child = menu->list; child; child = child->next)
898 		build_conf(child);
899 	indent -= doint;
900 }
901 
902 static void reset_menu(void)
903 {
904 	unpost_menu(curses_menu);
905 	clean_items();
906 }
907 
908 /* adjust the menu to show this item.
909  * prefer not to scroll the menu if possible*/
910 static void center_item(int selected_index, int *last_top_row)
911 {
912 	int toprow;
913 
914 	set_top_row(curses_menu, *last_top_row);
915 	toprow = top_row(curses_menu);
916 	if (selected_index < toprow ||
917 	    selected_index >= toprow+mwin_max_lines) {
918 		toprow = max(selected_index-mwin_max_lines/2, 0);
919 		if (toprow >= item_count(curses_menu)-mwin_max_lines)
920 			toprow = item_count(curses_menu)-mwin_max_lines;
921 		set_top_row(curses_menu, toprow);
922 	}
923 	set_current_item(curses_menu,
924 			curses_menu_items[selected_index]);
925 	*last_top_row = toprow;
926 	post_menu(curses_menu);
927 	refresh_all_windows(main_window);
928 }
929 
930 /* this function assumes reset_menu has been called before */
931 static void show_menu(const char *prompt, const char *instructions,
932 		int selected_index, int *last_top_row)
933 {
934 	int maxx, maxy;
935 	WINDOW *menu_window;
936 
937 	current_instructions = instructions;
938 
939 	clear();
940 	print_in_middle(stdscr, 1, getmaxx(stdscr),
941 			menu_backtitle,
942 			attr_main_heading);
943 
944 	wattrset(main_window, attr_main_menu_box);
945 	box(main_window, 0, 0);
946 	wattrset(main_window, attr_main_menu_heading);
947 	mvwprintw(main_window, 0, 3, " %s ", prompt);
948 	wattrset(main_window, attr_normal);
949 
950 	set_menu_items(curses_menu, curses_menu_items);
951 
952 	/* position the menu at the middle of the screen */
953 	scale_menu(curses_menu, &maxy, &maxx);
954 	maxx = min(maxx, mwin_max_cols-2);
955 	maxy = mwin_max_lines;
956 	menu_window = derwin(main_window,
957 			maxy,
958 			maxx,
959 			2,
960 			(mwin_max_cols-maxx)/2);
961 	keypad(menu_window, TRUE);
962 	set_menu_win(curses_menu, menu_window);
963 	set_menu_sub(curses_menu, menu_window);
964 
965 	/* must reassert this after changing items, otherwise returns to a
966 	 * default of 16
967 	 */
968 	set_menu_format(curses_menu, maxy, 1);
969 	center_item(selected_index, last_top_row);
970 	set_menu_format(curses_menu, maxy, 1);
971 
972 	print_function_line();
973 
974 	/* Post the menu */
975 	post_menu(curses_menu);
976 	refresh_all_windows(main_window);
977 }
978 
979 static void adj_match_dir(match_f *match_direction)
980 {
981 	if (*match_direction == FIND_NEXT_MATCH_DOWN)
982 		*match_direction =
983 			MATCH_TINKER_PATTERN_DOWN;
984 	else if (*match_direction == FIND_NEXT_MATCH_UP)
985 		*match_direction =
986 			MATCH_TINKER_PATTERN_UP;
987 	/* else, do no change.. */
988 }
989 
990 struct match_state
991 {
992 	int in_search;
993 	match_f match_direction;
994 	char pattern[256];
995 };
996 
997 /* Return 0 means I have handled the key. In such a case, ans should hold the
998  * item to center, or -1 otherwise.
999  * Else return -1 .
1000  */
1001 static int do_match(int key, struct match_state *state, int *ans)
1002 {
1003 	char c = (char) key;
1004 	int terminate_search = 0;
1005 	*ans = -1;
1006 	if (key == '/' || (state->in_search && key == 27)) {
1007 		move(0, 0);
1008 		refresh();
1009 		clrtoeol();
1010 		state->in_search = 1-state->in_search;
1011 		bzero(state->pattern, sizeof(state->pattern));
1012 		state->match_direction = MATCH_TINKER_PATTERN_DOWN;
1013 		return 0;
1014 	} else if (!state->in_search)
1015 		return 1;
1016 
1017 	if (isalnum(c) || isgraph(c) || c == ' ') {
1018 		state->pattern[strlen(state->pattern)] = c;
1019 		state->pattern[strlen(state->pattern)] = '\0';
1020 		adj_match_dir(&state->match_direction);
1021 		*ans = get_mext_match(state->pattern,
1022 				state->match_direction);
1023 	} else if (key == KEY_DOWN) {
1024 		state->match_direction = FIND_NEXT_MATCH_DOWN;
1025 		*ans = get_mext_match(state->pattern,
1026 				state->match_direction);
1027 	} else if (key == KEY_UP) {
1028 		state->match_direction = FIND_NEXT_MATCH_UP;
1029 		*ans = get_mext_match(state->pattern,
1030 				state->match_direction);
1031 	} else if (key == KEY_BACKSPACE || key == 8 || key == 127) {
1032 		state->pattern[strlen(state->pattern)-1] = '\0';
1033 		adj_match_dir(&state->match_direction);
1034 	} else
1035 		terminate_search = 1;
1036 
1037 	if (terminate_search) {
1038 		state->in_search = 0;
1039 		bzero(state->pattern, sizeof(state->pattern));
1040 		move(0, 0);
1041 		refresh();
1042 		clrtoeol();
1043 		return -1;
1044 	}
1045 	return 0;
1046 }
1047 
1048 static void conf(struct menu *menu)
1049 {
1050 	selected_conf(menu, NULL);
1051 }
1052 
1053 static void selected_conf(struct menu *menu, struct menu *active_menu)
1054 {
1055 	struct menu *submenu = NULL;
1056 	struct symbol *sym;
1057 	int i, res;
1058 	int current_index = 0;
1059 	int last_top_row = 0;
1060 	struct match_state match_state = {
1061 		.in_search = 0,
1062 		.match_direction = MATCH_TINKER_PATTERN_DOWN,
1063 		.pattern = "",
1064 	};
1065 
1066 	while (!global_exit) {
1067 		reset_menu();
1068 		current_menu = menu;
1069 		build_conf(menu);
1070 		if (!child_count)
1071 			break;
1072 
1073 		if (active_menu != NULL) {
1074 			for (i = 0; i < items_num; i++) {
1075 				struct mitem *mcur;
1076 
1077 				mcur = (struct mitem *) item_userptr(curses_menu_items[i]);
1078 				if ((struct menu *) mcur->usrptr == active_menu) {
1079 					current_index = i;
1080 					break;
1081 				}
1082 			}
1083 			active_menu = NULL;
1084 		}
1085 
1086 		show_menu(menu_get_prompt(menu), menu_instructions,
1087 			  current_index, &last_top_row);
1088 		keypad((menu_win(curses_menu)), TRUE);
1089 		while (!global_exit) {
1090 			if (match_state.in_search) {
1091 				mvprintw(0, 0,
1092 					"searching: %s", match_state.pattern);
1093 				clrtoeol();
1094 			}
1095 			refresh_all_windows(main_window);
1096 			res = wgetch(menu_win(curses_menu));
1097 			if (!res)
1098 				break;
1099 			if (do_match(res, &match_state, &current_index) == 0) {
1100 				if (current_index != -1)
1101 					center_item(current_index,
1102 						    &last_top_row);
1103 				continue;
1104 			}
1105 			if (process_special_keys(&res,
1106 						(struct menu *) item_data()))
1107 				break;
1108 			switch (res) {
1109 			case KEY_DOWN:
1110 			case 'j':
1111 				menu_driver(curses_menu, REQ_DOWN_ITEM);
1112 				break;
1113 			case KEY_UP:
1114 			case 'k':
1115 				menu_driver(curses_menu, REQ_UP_ITEM);
1116 				break;
1117 			case KEY_NPAGE:
1118 				menu_driver(curses_menu, REQ_SCR_DPAGE);
1119 				break;
1120 			case KEY_PPAGE:
1121 				menu_driver(curses_menu, REQ_SCR_UPAGE);
1122 				break;
1123 			case KEY_HOME:
1124 				menu_driver(curses_menu, REQ_FIRST_ITEM);
1125 				break;
1126 			case KEY_END:
1127 				menu_driver(curses_menu, REQ_LAST_ITEM);
1128 				break;
1129 			case 'h':
1130 			case '?':
1131 				show_help((struct menu *) item_data());
1132 				break;
1133 			}
1134 			if (res == 10 || res == 27 ||
1135 				res == 32 || res == 'n' || res == 'y' ||
1136 				res == KEY_LEFT || res == KEY_RIGHT ||
1137 				res == 'm')
1138 				break;
1139 			refresh_all_windows(main_window);
1140 		}
1141 
1142 		refresh_all_windows(main_window);
1143 		/* if ESC or left*/
1144 		if (res == 27 || (menu != &rootmenu && res == KEY_LEFT))
1145 			break;
1146 
1147 		/* remember location in the menu */
1148 		last_top_row = top_row(curses_menu);
1149 		current_index = curses_item_index();
1150 
1151 		if (!item_tag())
1152 			continue;
1153 
1154 		submenu = (struct menu *) item_data();
1155 		if (!submenu || !menu_is_visible(submenu))
1156 			continue;
1157 		sym = submenu->sym;
1158 
1159 		switch (res) {
1160 		case ' ':
1161 			if (item_is_tag('t'))
1162 				sym_toggle_tristate_value(sym);
1163 			else if (item_is_tag('m'))
1164 				conf(submenu);
1165 			break;
1166 		case KEY_RIGHT:
1167 		case 10: /* ENTER WAS PRESSED */
1168 			switch (item_tag()) {
1169 			case 'm':
1170 				if (single_menu_mode)
1171 					submenu->data =
1172 						(void *) (long) !submenu->data;
1173 				else
1174 					conf(submenu);
1175 				break;
1176 			case 't':
1177 				if (sym_is_choice(sym))
1178 					conf_choice(submenu);
1179 				else if (submenu->prompt &&
1180 					 submenu->prompt->type == P_MENU)
1181 					conf(submenu);
1182 				else if (res == 10)
1183 					sym_toggle_tristate_value(sym);
1184 				break;
1185 			case 's':
1186 				conf_string(submenu);
1187 				break;
1188 			}
1189 			break;
1190 		case 'y':
1191 			if (item_is_tag('t')) {
1192 				if (sym_set_tristate_value(sym, yes))
1193 					break;
1194 				if (sym_set_tristate_value(sym, mod))
1195 					btn_dialog(main_window, setmod_text, 0);
1196 			}
1197 			break;
1198 		case 'n':
1199 			if (item_is_tag('t'))
1200 				sym_set_tristate_value(sym, no);
1201 			break;
1202 		case 'm':
1203 			if (item_is_tag('t'))
1204 				sym_set_tristate_value(sym, mod);
1205 			break;
1206 		}
1207 	}
1208 }
1209 
1210 static void conf_message_callback(const char *s)
1211 {
1212 	btn_dialog(main_window, s, 1, "<OK>");
1213 }
1214 
1215 static void show_help(struct menu *menu)
1216 {
1217 	struct gstr help;
1218 
1219 	if (!menu)
1220 		return;
1221 
1222 	help = str_new();
1223 	menu_get_ext_help(menu, &help);
1224 	show_scroll_win(main_window, menu_get_prompt(menu), str_get(&help));
1225 	str_free(&help);
1226 }
1227 
1228 static void conf_choice(struct menu *menu)
1229 {
1230 	const char *prompt = menu_get_prompt(menu);
1231 	struct menu *child = NULL;
1232 	struct symbol *active;
1233 	int selected_index = 0;
1234 	int last_top_row = 0;
1235 	int res, i = 0;
1236 	struct match_state match_state = {
1237 		.in_search = 0,
1238 		.match_direction = MATCH_TINKER_PATTERN_DOWN,
1239 		.pattern = "",
1240 	};
1241 
1242 	active = sym_calc_choice(menu);
1243 	/* this is mostly duplicated from the conf() function. */
1244 	while (!global_exit) {
1245 		reset_menu();
1246 
1247 		for (i = 0, child = menu->list; child; child = child->next) {
1248 			if (!show_all_items && !menu_is_visible(child))
1249 				continue;
1250 
1251 			if (child->sym == sym_calc_choice(menu))
1252 				item_make(child, ':', "<X> %s",
1253 						menu_get_prompt(child));
1254 			else if (child->sym)
1255 				item_make(child, ':', "    %s",
1256 						menu_get_prompt(child));
1257 			else
1258 				item_make(child, ':', "*** %s ***",
1259 						menu_get_prompt(child));
1260 
1261 			if (child->sym == active){
1262 				last_top_row = top_row(curses_menu);
1263 				selected_index = i;
1264 			}
1265 			i++;
1266 		}
1267 		show_menu(prompt ? prompt : "Choice Menu",
1268 				radiolist_instructions,
1269 				selected_index,
1270 				&last_top_row);
1271 		while (!global_exit) {
1272 			if (match_state.in_search) {
1273 				mvprintw(0, 0, "searching: %s",
1274 					 match_state.pattern);
1275 				clrtoeol();
1276 			}
1277 			refresh_all_windows(main_window);
1278 			res = wgetch(menu_win(curses_menu));
1279 			if (!res)
1280 				break;
1281 			if (do_match(res, &match_state, &selected_index) == 0) {
1282 				if (selected_index != -1)
1283 					center_item(selected_index,
1284 						    &last_top_row);
1285 				continue;
1286 			}
1287 			if (process_special_keys(
1288 						&res,
1289 						(struct menu *) item_data()))
1290 				break;
1291 			switch (res) {
1292 			case KEY_DOWN:
1293 			case 'j':
1294 				menu_driver(curses_menu, REQ_DOWN_ITEM);
1295 				break;
1296 			case KEY_UP:
1297 			case 'k':
1298 				menu_driver(curses_menu, REQ_UP_ITEM);
1299 				break;
1300 			case KEY_NPAGE:
1301 				menu_driver(curses_menu, REQ_SCR_DPAGE);
1302 				break;
1303 			case KEY_PPAGE:
1304 				menu_driver(curses_menu, REQ_SCR_UPAGE);
1305 				break;
1306 			case KEY_HOME:
1307 				menu_driver(curses_menu, REQ_FIRST_ITEM);
1308 				break;
1309 			case KEY_END:
1310 				menu_driver(curses_menu, REQ_LAST_ITEM);
1311 				break;
1312 			case 'h':
1313 			case '?':
1314 				show_help((struct menu *) item_data());
1315 				break;
1316 			}
1317 			if (res == 10 || res == 27 || res == ' ' ||
1318 					res == KEY_LEFT){
1319 				break;
1320 			}
1321 			refresh_all_windows(main_window);
1322 		}
1323 		/* if ESC or left */
1324 		if (res == 27 || res == KEY_LEFT)
1325 			break;
1326 
1327 		child = item_data();
1328 		if (!child || !menu_is_visible(child) || !child->sym)
1329 			continue;
1330 		switch (res) {
1331 		case ' ':
1332 		case  10:
1333 		case KEY_RIGHT:
1334 			choice_set_value(menu, child->sym);
1335 			return;
1336 		case 'h':
1337 		case '?':
1338 			show_help(child);
1339 			active = child->sym;
1340 			break;
1341 		case KEY_EXIT:
1342 			return;
1343 		}
1344 	}
1345 }
1346 
1347 static void conf_string(struct menu *menu)
1348 {
1349 	const char *prompt = menu_get_prompt(menu);
1350 
1351 	while (1) {
1352 		int res;
1353 		const char *heading;
1354 
1355 		switch (sym_get_type(menu->sym)) {
1356 		case S_INT:
1357 			heading = inputbox_instructions_int;
1358 			break;
1359 		case S_HEX:
1360 			heading = inputbox_instructions_hex;
1361 			break;
1362 		case S_STRING:
1363 			heading = inputbox_instructions_string;
1364 			break;
1365 		default:
1366 			heading = "Internal nconf error!";
1367 		}
1368 		res = dialog_inputbox(main_window,
1369 				prompt ? prompt : "Main Menu",
1370 				heading,
1371 				sym_get_string_value(menu->sym),
1372 				&dialog_input_result,
1373 				&dialog_input_result_len);
1374 		switch (res) {
1375 		case 0:
1376 			if (sym_set_string_value(menu->sym,
1377 						dialog_input_result))
1378 				return;
1379 			btn_dialog(main_window,
1380 				"You have made an invalid entry.", 0);
1381 			break;
1382 		case 1:
1383 			show_help(menu);
1384 			break;
1385 		case KEY_EXIT:
1386 			return;
1387 		}
1388 	}
1389 }
1390 
1391 static void conf_load(void)
1392 {
1393 	while (1) {
1394 		int res;
1395 		res = dialog_inputbox(main_window,
1396 				NULL, load_config_text,
1397 				filename,
1398 				&dialog_input_result,
1399 				&dialog_input_result_len);
1400 		switch (res) {
1401 		case 0:
1402 			if (!dialog_input_result[0])
1403 				return;
1404 			if (!conf_read(dialog_input_result)) {
1405 				set_config_filename(dialog_input_result);
1406 				conf_set_changed(true);
1407 				return;
1408 			}
1409 			btn_dialog(main_window, "File does not exist!", 0);
1410 			break;
1411 		case 1:
1412 			show_scroll_win(main_window,
1413 					"Load Alternate Configuration",
1414 					load_config_help);
1415 			break;
1416 		case KEY_EXIT:
1417 			return;
1418 		}
1419 	}
1420 }
1421 
1422 static void conf_save(void)
1423 {
1424 	while (1) {
1425 		int res;
1426 		res = dialog_inputbox(main_window,
1427 				NULL, save_config_text,
1428 				filename,
1429 				&dialog_input_result,
1430 				&dialog_input_result_len);
1431 		switch (res) {
1432 		case 0:
1433 			if (!dialog_input_result[0])
1434 				return;
1435 			res = conf_write(dialog_input_result);
1436 			if (!res) {
1437 				set_config_filename(dialog_input_result);
1438 				return;
1439 			}
1440 			btn_dialog(main_window, "Can't create file!",
1441 				1, "<OK>");
1442 			break;
1443 		case 1:
1444 			show_scroll_win(main_window,
1445 				"Save Alternate Configuration",
1446 				save_config_help);
1447 			break;
1448 		case KEY_EXIT:
1449 			return;
1450 		}
1451 	}
1452 }
1453 
1454 static void setup_windows(void)
1455 {
1456 	int lines, columns;
1457 
1458 	getmaxyx(stdscr, lines, columns);
1459 
1460 	if (main_window != NULL)
1461 		delwin(main_window);
1462 
1463 	/* set up the menu and menu window */
1464 	main_window = newwin(lines-2, columns-2, 2, 1);
1465 	keypad(main_window, TRUE);
1466 	mwin_max_lines = lines-7;
1467 	mwin_max_cols = columns-6;
1468 
1469 	/* panels order is from bottom to top */
1470 	new_panel(main_window);
1471 }
1472 
1473 int main(int ac, char **av)
1474 {
1475 	int lines, columns;
1476 	char *mode;
1477 
1478 	if (ac > 1 && strcmp(av[1], "-s") == 0) {
1479 		/* Silence conf_read() until the real callback is set up */
1480 		conf_set_message_callback(NULL);
1481 		av++;
1482 	}
1483 	conf_parse(av[1]);
1484 	conf_read(NULL);
1485 
1486 	mode = getenv("NCONFIG_MODE");
1487 	if (mode) {
1488 		if (!strcasecmp(mode, "single_menu"))
1489 			single_menu_mode = 1;
1490 	}
1491 
1492 	/* Initialize curses */
1493 	initscr();
1494 	/* set color theme */
1495 	set_colors();
1496 
1497 	cbreak();
1498 	noecho();
1499 	keypad(stdscr, TRUE);
1500 	curs_set(0);
1501 
1502 	getmaxyx(stdscr, lines, columns);
1503 	if (columns < 75 || lines < 20) {
1504 		endwin();
1505 		printf("Your terminal should have at "
1506 			"least 20 lines and 75 columns\n");
1507 		return 1;
1508 	}
1509 
1510 	notimeout(stdscr, FALSE);
1511 #if NCURSES_REENTRANT
1512 	set_escdelay(1);
1513 #else
1514 	ESCDELAY = 1;
1515 #endif
1516 
1517 	/* set btns menu */
1518 	curses_menu = new_menu(curses_menu_items);
1519 	menu_opts_off(curses_menu, O_SHOWDESC);
1520 	menu_opts_on(curses_menu, O_SHOWMATCH);
1521 	menu_opts_on(curses_menu, O_ONEVALUE);
1522 	menu_opts_on(curses_menu, O_NONCYCLIC);
1523 	menu_opts_on(curses_menu, O_IGNORECASE);
1524 	set_menu_mark(curses_menu, " ");
1525 	set_menu_fore(curses_menu, attr_main_menu_fore);
1526 	set_menu_back(curses_menu, attr_main_menu_back);
1527 	set_menu_grey(curses_menu, attr_main_menu_grey);
1528 
1529 	set_config_filename(conf_get_configname());
1530 	setup_windows();
1531 
1532 	/* check for KEY_FUNC(1) */
1533 	if (has_key(KEY_F(1)) == FALSE) {
1534 		show_scroll_win(main_window,
1535 				"Instructions",
1536 				menu_no_f_instructions);
1537 	}
1538 
1539 	conf_set_message_callback(conf_message_callback);
1540 	/* do the work */
1541 	while (!global_exit) {
1542 		conf(&rootmenu);
1543 		if (!global_exit && do_exit() == 0)
1544 			break;
1545 	}
1546 	/* ok, we are done */
1547 	unpost_menu(curses_menu);
1548 	free_menu(curses_menu);
1549 	delwin(main_window);
1550 	clear();
1551 	refresh();
1552 	endwin();
1553 	return 0;
1554 }
1555