xref: /linux/scripts/kconfig/nconf.c (revision 95444b9eeb8c5c0330563931d70c61ca3b101548)
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_get_choice_value(sym);
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 		if (sym_is_changeable(sym)) {
829 			switch (val) {
830 			case yes:
831 				ch = '*';
832 				break;
833 			case mod:
834 				ch = 'M';
835 				break;
836 			default:
837 				ch = ' ';
838 				break;
839 			}
840 			item_make(menu, 't', "<%c>", ch);
841 		} else {
842 			item_make(menu, def_menu ? 't' : ':', "   ");
843 		}
844 
845 		item_add_str("%*c%s", indent + 1,
846 				' ', menu_get_prompt(menu));
847 		if (val == yes) {
848 			if (def_menu)
849 				item_add_str(" (%s)  --->", menu_get_prompt(def_menu));
850 			return;
851 		}
852 	} else {
853 		if (menu == current_menu) {
854 			item_make(menu, ':',
855 				"---%*c%s", indent + 1,
856 				' ', menu_get_prompt(menu));
857 			goto conf_childs;
858 		}
859 		child_count++;
860 		val = sym_get_tristate_value(sym);
861 		switch (type) {
862 		case S_BOOLEAN:
863 			if (sym_is_changeable(sym))
864 				item_make(menu, 't', "[%c]",
865 					  val == no ? ' ' : '*');
866 			else
867 				item_make(menu, 't', "-%c-",
868 					  val == no ? ' ' : '*');
869 			break;
870 		case S_TRISTATE:
871 			switch (val) {
872 			case yes:
873 				ch = '*';
874 				break;
875 			case mod:
876 				ch = 'M';
877 				break;
878 			default:
879 				ch = ' ';
880 				break;
881 			}
882 			if (sym_is_changeable(sym)) {
883 				if (sym->rev_dep.tri == mod)
884 					item_make(menu, 't', "{%c}", ch);
885 				else
886 					item_make(menu, 't', "<%c>", ch);
887 			} else
888 				item_make(menu, 't', "-%c-", ch);
889 			break;
890 		default:
891 			tmp = 2 + strlen(sym_get_string_value(sym));
892 			item_make(menu, 's', "    (%s)",
893 				  sym_get_string_value(sym));
894 			tmp = indent - tmp + 4;
895 			if (tmp < 0)
896 				tmp = 0;
897 			item_add_str("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
898 				     (sym_has_value(sym) ||
899 				      !sym_is_changeable(sym)) ? "" : " (NEW)");
900 			goto conf_childs;
901 		}
902 		item_add_str("%*c%s%s", indent + 1, ' ',
903 				menu_get_prompt(menu),
904 				(sym_has_value(sym) || !sym_is_changeable(sym)) ?
905 				"" : " (NEW)");
906 		if (menu->prompt && menu->prompt->type == P_MENU) {
907 			item_add_str("  %s", menu_is_empty(menu) ? "----" : "--->");
908 			return;
909 		}
910 	}
911 
912 conf_childs:
913 	indent += doint;
914 	for (child = menu->list; child; child = child->next)
915 		build_conf(child);
916 	indent -= doint;
917 }
918 
919 static void reset_menu(void)
920 {
921 	unpost_menu(curses_menu);
922 	clean_items();
923 }
924 
925 /* adjust the menu to show this item.
926  * prefer not to scroll the menu if possible*/
927 static void center_item(int selected_index, int *last_top_row)
928 {
929 	int toprow;
930 
931 	set_top_row(curses_menu, *last_top_row);
932 	toprow = top_row(curses_menu);
933 	if (selected_index < toprow ||
934 	    selected_index >= toprow+mwin_max_lines) {
935 		toprow = max(selected_index-mwin_max_lines/2, 0);
936 		if (toprow >= item_count(curses_menu)-mwin_max_lines)
937 			toprow = item_count(curses_menu)-mwin_max_lines;
938 		set_top_row(curses_menu, toprow);
939 	}
940 	set_current_item(curses_menu,
941 			curses_menu_items[selected_index]);
942 	*last_top_row = toprow;
943 	post_menu(curses_menu);
944 	refresh_all_windows(main_window);
945 }
946 
947 /* this function assumes reset_menu has been called before */
948 static void show_menu(const char *prompt, const char *instructions,
949 		int selected_index, int *last_top_row)
950 {
951 	int maxx, maxy;
952 	WINDOW *menu_window;
953 
954 	current_instructions = instructions;
955 
956 	clear();
957 	print_in_middle(stdscr, 1, getmaxx(stdscr),
958 			menu_backtitle,
959 			attr_main_heading);
960 
961 	wattrset(main_window, attr_main_menu_box);
962 	box(main_window, 0, 0);
963 	wattrset(main_window, attr_main_menu_heading);
964 	mvwprintw(main_window, 0, 3, " %s ", prompt);
965 	wattrset(main_window, attr_normal);
966 
967 	set_menu_items(curses_menu, curses_menu_items);
968 
969 	/* position the menu at the middle of the screen */
970 	scale_menu(curses_menu, &maxy, &maxx);
971 	maxx = min(maxx, mwin_max_cols-2);
972 	maxy = mwin_max_lines;
973 	menu_window = derwin(main_window,
974 			maxy,
975 			maxx,
976 			2,
977 			(mwin_max_cols-maxx)/2);
978 	keypad(menu_window, TRUE);
979 	set_menu_win(curses_menu, menu_window);
980 	set_menu_sub(curses_menu, menu_window);
981 
982 	/* must reassert this after changing items, otherwise returns to a
983 	 * default of 16
984 	 */
985 	set_menu_format(curses_menu, maxy, 1);
986 	center_item(selected_index, last_top_row);
987 	set_menu_format(curses_menu, maxy, 1);
988 
989 	print_function_line();
990 
991 	/* Post the menu */
992 	post_menu(curses_menu);
993 	refresh_all_windows(main_window);
994 }
995 
996 static void adj_match_dir(match_f *match_direction)
997 {
998 	if (*match_direction == FIND_NEXT_MATCH_DOWN)
999 		*match_direction =
1000 			MATCH_TINKER_PATTERN_DOWN;
1001 	else if (*match_direction == FIND_NEXT_MATCH_UP)
1002 		*match_direction =
1003 			MATCH_TINKER_PATTERN_UP;
1004 	/* else, do no change.. */
1005 }
1006 
1007 struct match_state
1008 {
1009 	int in_search;
1010 	match_f match_direction;
1011 	char pattern[256];
1012 };
1013 
1014 /* Return 0 means I have handled the key. In such a case, ans should hold the
1015  * item to center, or -1 otherwise.
1016  * Else return -1 .
1017  */
1018 static int do_match(int key, struct match_state *state, int *ans)
1019 {
1020 	char c = (char) key;
1021 	int terminate_search = 0;
1022 	*ans = -1;
1023 	if (key == '/' || (state->in_search && key == 27)) {
1024 		move(0, 0);
1025 		refresh();
1026 		clrtoeol();
1027 		state->in_search = 1-state->in_search;
1028 		bzero(state->pattern, sizeof(state->pattern));
1029 		state->match_direction = MATCH_TINKER_PATTERN_DOWN;
1030 		return 0;
1031 	} else if (!state->in_search)
1032 		return 1;
1033 
1034 	if (isalnum(c) || isgraph(c) || c == ' ') {
1035 		state->pattern[strlen(state->pattern)] = c;
1036 		state->pattern[strlen(state->pattern)] = '\0';
1037 		adj_match_dir(&state->match_direction);
1038 		*ans = get_mext_match(state->pattern,
1039 				state->match_direction);
1040 	} else if (key == KEY_DOWN) {
1041 		state->match_direction = FIND_NEXT_MATCH_DOWN;
1042 		*ans = get_mext_match(state->pattern,
1043 				state->match_direction);
1044 	} else if (key == KEY_UP) {
1045 		state->match_direction = FIND_NEXT_MATCH_UP;
1046 		*ans = get_mext_match(state->pattern,
1047 				state->match_direction);
1048 	} else if (key == KEY_BACKSPACE || key == 8 || key == 127) {
1049 		state->pattern[strlen(state->pattern)-1] = '\0';
1050 		adj_match_dir(&state->match_direction);
1051 	} else
1052 		terminate_search = 1;
1053 
1054 	if (terminate_search) {
1055 		state->in_search = 0;
1056 		bzero(state->pattern, sizeof(state->pattern));
1057 		move(0, 0);
1058 		refresh();
1059 		clrtoeol();
1060 		return -1;
1061 	}
1062 	return 0;
1063 }
1064 
1065 static void conf(struct menu *menu)
1066 {
1067 	selected_conf(menu, NULL);
1068 }
1069 
1070 static void selected_conf(struct menu *menu, struct menu *active_menu)
1071 {
1072 	struct menu *submenu = NULL;
1073 	struct symbol *sym;
1074 	int i, res;
1075 	int current_index = 0;
1076 	int last_top_row = 0;
1077 	struct match_state match_state = {
1078 		.in_search = 0,
1079 		.match_direction = MATCH_TINKER_PATTERN_DOWN,
1080 		.pattern = "",
1081 	};
1082 
1083 	while (!global_exit) {
1084 		reset_menu();
1085 		current_menu = menu;
1086 		build_conf(menu);
1087 		if (!child_count)
1088 			break;
1089 
1090 		if (active_menu != NULL) {
1091 			for (i = 0; i < items_num; i++) {
1092 				struct mitem *mcur;
1093 
1094 				mcur = (struct mitem *) item_userptr(curses_menu_items[i]);
1095 				if ((struct menu *) mcur->usrptr == active_menu) {
1096 					current_index = i;
1097 					break;
1098 				}
1099 			}
1100 			active_menu = NULL;
1101 		}
1102 
1103 		show_menu(menu_get_prompt(menu), menu_instructions,
1104 			  current_index, &last_top_row);
1105 		keypad((menu_win(curses_menu)), TRUE);
1106 		while (!global_exit) {
1107 			if (match_state.in_search) {
1108 				mvprintw(0, 0,
1109 					"searching: %s", match_state.pattern);
1110 				clrtoeol();
1111 			}
1112 			refresh_all_windows(main_window);
1113 			res = wgetch(menu_win(curses_menu));
1114 			if (!res)
1115 				break;
1116 			if (do_match(res, &match_state, &current_index) == 0) {
1117 				if (current_index != -1)
1118 					center_item(current_index,
1119 						    &last_top_row);
1120 				continue;
1121 			}
1122 			if (process_special_keys(&res,
1123 						(struct menu *) item_data()))
1124 				break;
1125 			switch (res) {
1126 			case KEY_DOWN:
1127 			case 'j':
1128 				menu_driver(curses_menu, REQ_DOWN_ITEM);
1129 				break;
1130 			case KEY_UP:
1131 			case 'k':
1132 				menu_driver(curses_menu, REQ_UP_ITEM);
1133 				break;
1134 			case KEY_NPAGE:
1135 				menu_driver(curses_menu, REQ_SCR_DPAGE);
1136 				break;
1137 			case KEY_PPAGE:
1138 				menu_driver(curses_menu, REQ_SCR_UPAGE);
1139 				break;
1140 			case KEY_HOME:
1141 				menu_driver(curses_menu, REQ_FIRST_ITEM);
1142 				break;
1143 			case KEY_END:
1144 				menu_driver(curses_menu, REQ_LAST_ITEM);
1145 				break;
1146 			case 'h':
1147 			case '?':
1148 				show_help((struct menu *) item_data());
1149 				break;
1150 			}
1151 			if (res == 10 || res == 27 ||
1152 				res == 32 || res == 'n' || res == 'y' ||
1153 				res == KEY_LEFT || res == KEY_RIGHT ||
1154 				res == 'm')
1155 				break;
1156 			refresh_all_windows(main_window);
1157 		}
1158 
1159 		refresh_all_windows(main_window);
1160 		/* if ESC or left*/
1161 		if (res == 27 || (menu != &rootmenu && res == KEY_LEFT))
1162 			break;
1163 
1164 		/* remember location in the menu */
1165 		last_top_row = top_row(curses_menu);
1166 		current_index = curses_item_index();
1167 
1168 		if (!item_tag())
1169 			continue;
1170 
1171 		submenu = (struct menu *) item_data();
1172 		if (!submenu || !menu_is_visible(submenu))
1173 			continue;
1174 		sym = submenu->sym;
1175 
1176 		switch (res) {
1177 		case ' ':
1178 			if (item_is_tag('t'))
1179 				sym_toggle_tristate_value(sym);
1180 			else if (item_is_tag('m'))
1181 				conf(submenu);
1182 			break;
1183 		case KEY_RIGHT:
1184 		case 10: /* ENTER WAS PRESSED */
1185 			switch (item_tag()) {
1186 			case 'm':
1187 				if (single_menu_mode)
1188 					submenu->data =
1189 						(void *) (long) !submenu->data;
1190 				else
1191 					conf(submenu);
1192 				break;
1193 			case 't':
1194 				if (sym_is_choice(sym) &&
1195 				    sym_get_tristate_value(sym) == yes)
1196 					conf_choice(submenu);
1197 				else if (submenu->prompt &&
1198 					 submenu->prompt->type == P_MENU)
1199 					conf(submenu);
1200 				else if (res == 10)
1201 					sym_toggle_tristate_value(sym);
1202 				break;
1203 			case 's':
1204 				conf_string(submenu);
1205 				break;
1206 			}
1207 			break;
1208 		case 'y':
1209 			if (item_is_tag('t')) {
1210 				if (sym_set_tristate_value(sym, yes))
1211 					break;
1212 				if (sym_set_tristate_value(sym, mod))
1213 					btn_dialog(main_window, setmod_text, 0);
1214 			}
1215 			break;
1216 		case 'n':
1217 			if (item_is_tag('t'))
1218 				sym_set_tristate_value(sym, no);
1219 			break;
1220 		case 'm':
1221 			if (item_is_tag('t'))
1222 				sym_set_tristate_value(sym, mod);
1223 			break;
1224 		}
1225 	}
1226 }
1227 
1228 static void conf_message_callback(const char *s)
1229 {
1230 	btn_dialog(main_window, s, 1, "<OK>");
1231 }
1232 
1233 static void show_help(struct menu *menu)
1234 {
1235 	struct gstr help;
1236 
1237 	if (!menu)
1238 		return;
1239 
1240 	help = str_new();
1241 	menu_get_ext_help(menu, &help);
1242 	show_scroll_win(main_window, menu_get_prompt(menu), str_get(&help));
1243 	str_free(&help);
1244 }
1245 
1246 static void conf_choice(struct menu *menu)
1247 {
1248 	const char *prompt = menu_get_prompt(menu);
1249 	struct menu *child = NULL;
1250 	struct symbol *active;
1251 	int selected_index = 0;
1252 	int last_top_row = 0;
1253 	int res, i = 0;
1254 	struct match_state match_state = {
1255 		.in_search = 0,
1256 		.match_direction = MATCH_TINKER_PATTERN_DOWN,
1257 		.pattern = "",
1258 	};
1259 
1260 	active = sym_get_choice_value(menu->sym);
1261 	/* this is mostly duplicated from the conf() function. */
1262 	while (!global_exit) {
1263 		reset_menu();
1264 
1265 		for (i = 0, child = menu->list; child; child = child->next) {
1266 			if (!show_all_items && !menu_is_visible(child))
1267 				continue;
1268 
1269 			if (child->sym == sym_get_choice_value(menu->sym))
1270 				item_make(child, ':', "<X> %s",
1271 						menu_get_prompt(child));
1272 			else if (child->sym)
1273 				item_make(child, ':', "    %s",
1274 						menu_get_prompt(child));
1275 			else
1276 				item_make(child, ':', "*** %s ***",
1277 						menu_get_prompt(child));
1278 
1279 			if (child->sym == active){
1280 				last_top_row = top_row(curses_menu);
1281 				selected_index = i;
1282 			}
1283 			i++;
1284 		}
1285 		show_menu(prompt ? prompt : "Choice Menu",
1286 				radiolist_instructions,
1287 				selected_index,
1288 				&last_top_row);
1289 		while (!global_exit) {
1290 			if (match_state.in_search) {
1291 				mvprintw(0, 0, "searching: %s",
1292 					 match_state.pattern);
1293 				clrtoeol();
1294 			}
1295 			refresh_all_windows(main_window);
1296 			res = wgetch(menu_win(curses_menu));
1297 			if (!res)
1298 				break;
1299 			if (do_match(res, &match_state, &selected_index) == 0) {
1300 				if (selected_index != -1)
1301 					center_item(selected_index,
1302 						    &last_top_row);
1303 				continue;
1304 			}
1305 			if (process_special_keys(
1306 						&res,
1307 						(struct menu *) item_data()))
1308 				break;
1309 			switch (res) {
1310 			case KEY_DOWN:
1311 			case 'j':
1312 				menu_driver(curses_menu, REQ_DOWN_ITEM);
1313 				break;
1314 			case KEY_UP:
1315 			case 'k':
1316 				menu_driver(curses_menu, REQ_UP_ITEM);
1317 				break;
1318 			case KEY_NPAGE:
1319 				menu_driver(curses_menu, REQ_SCR_DPAGE);
1320 				break;
1321 			case KEY_PPAGE:
1322 				menu_driver(curses_menu, REQ_SCR_UPAGE);
1323 				break;
1324 			case KEY_HOME:
1325 				menu_driver(curses_menu, REQ_FIRST_ITEM);
1326 				break;
1327 			case KEY_END:
1328 				menu_driver(curses_menu, REQ_LAST_ITEM);
1329 				break;
1330 			case 'h':
1331 			case '?':
1332 				show_help((struct menu *) item_data());
1333 				break;
1334 			}
1335 			if (res == 10 || res == 27 || res == ' ' ||
1336 					res == KEY_LEFT){
1337 				break;
1338 			}
1339 			refresh_all_windows(main_window);
1340 		}
1341 		/* if ESC or left */
1342 		if (res == 27 || res == KEY_LEFT)
1343 			break;
1344 
1345 		child = item_data();
1346 		if (!child || !menu_is_visible(child) || !child->sym)
1347 			continue;
1348 		switch (res) {
1349 		case ' ':
1350 		case  10:
1351 		case KEY_RIGHT:
1352 			sym_set_tristate_value(child->sym, yes);
1353 			return;
1354 		case 'h':
1355 		case '?':
1356 			show_help(child);
1357 			active = child->sym;
1358 			break;
1359 		case KEY_EXIT:
1360 			return;
1361 		}
1362 	}
1363 }
1364 
1365 static void conf_string(struct menu *menu)
1366 {
1367 	const char *prompt = menu_get_prompt(menu);
1368 
1369 	while (1) {
1370 		int res;
1371 		const char *heading;
1372 
1373 		switch (sym_get_type(menu->sym)) {
1374 		case S_INT:
1375 			heading = inputbox_instructions_int;
1376 			break;
1377 		case S_HEX:
1378 			heading = inputbox_instructions_hex;
1379 			break;
1380 		case S_STRING:
1381 			heading = inputbox_instructions_string;
1382 			break;
1383 		default:
1384 			heading = "Internal nconf error!";
1385 		}
1386 		res = dialog_inputbox(main_window,
1387 				prompt ? prompt : "Main Menu",
1388 				heading,
1389 				sym_get_string_value(menu->sym),
1390 				&dialog_input_result,
1391 				&dialog_input_result_len);
1392 		switch (res) {
1393 		case 0:
1394 			if (sym_set_string_value(menu->sym,
1395 						dialog_input_result))
1396 				return;
1397 			btn_dialog(main_window,
1398 				"You have made an invalid entry.", 0);
1399 			break;
1400 		case 1:
1401 			show_help(menu);
1402 			break;
1403 		case KEY_EXIT:
1404 			return;
1405 		}
1406 	}
1407 }
1408 
1409 static void conf_load(void)
1410 {
1411 	while (1) {
1412 		int res;
1413 		res = dialog_inputbox(main_window,
1414 				NULL, load_config_text,
1415 				filename,
1416 				&dialog_input_result,
1417 				&dialog_input_result_len);
1418 		switch (res) {
1419 		case 0:
1420 			if (!dialog_input_result[0])
1421 				return;
1422 			if (!conf_read(dialog_input_result)) {
1423 				set_config_filename(dialog_input_result);
1424 				conf_set_changed(true);
1425 				return;
1426 			}
1427 			btn_dialog(main_window, "File does not exist!", 0);
1428 			break;
1429 		case 1:
1430 			show_scroll_win(main_window,
1431 					"Load Alternate Configuration",
1432 					load_config_help);
1433 			break;
1434 		case KEY_EXIT:
1435 			return;
1436 		}
1437 	}
1438 }
1439 
1440 static void conf_save(void)
1441 {
1442 	while (1) {
1443 		int res;
1444 		res = dialog_inputbox(main_window,
1445 				NULL, save_config_text,
1446 				filename,
1447 				&dialog_input_result,
1448 				&dialog_input_result_len);
1449 		switch (res) {
1450 		case 0:
1451 			if (!dialog_input_result[0])
1452 				return;
1453 			res = conf_write(dialog_input_result);
1454 			if (!res) {
1455 				set_config_filename(dialog_input_result);
1456 				return;
1457 			}
1458 			btn_dialog(main_window, "Can't create file!",
1459 				1, "<OK>");
1460 			break;
1461 		case 1:
1462 			show_scroll_win(main_window,
1463 				"Save Alternate Configuration",
1464 				save_config_help);
1465 			break;
1466 		case KEY_EXIT:
1467 			return;
1468 		}
1469 	}
1470 }
1471 
1472 static void setup_windows(void)
1473 {
1474 	int lines, columns;
1475 
1476 	getmaxyx(stdscr, lines, columns);
1477 
1478 	if (main_window != NULL)
1479 		delwin(main_window);
1480 
1481 	/* set up the menu and menu window */
1482 	main_window = newwin(lines-2, columns-2, 2, 1);
1483 	keypad(main_window, TRUE);
1484 	mwin_max_lines = lines-7;
1485 	mwin_max_cols = columns-6;
1486 
1487 	/* panels order is from bottom to top */
1488 	new_panel(main_window);
1489 }
1490 
1491 int main(int ac, char **av)
1492 {
1493 	int lines, columns;
1494 	char *mode;
1495 
1496 	if (ac > 1 && strcmp(av[1], "-s") == 0) {
1497 		/* Silence conf_read() until the real callback is set up */
1498 		conf_set_message_callback(NULL);
1499 		av++;
1500 	}
1501 	conf_parse(av[1]);
1502 	conf_read(NULL);
1503 
1504 	mode = getenv("NCONFIG_MODE");
1505 	if (mode) {
1506 		if (!strcasecmp(mode, "single_menu"))
1507 			single_menu_mode = 1;
1508 	}
1509 
1510 	/* Initialize curses */
1511 	initscr();
1512 	/* set color theme */
1513 	set_colors();
1514 
1515 	cbreak();
1516 	noecho();
1517 	keypad(stdscr, TRUE);
1518 	curs_set(0);
1519 
1520 	getmaxyx(stdscr, lines, columns);
1521 	if (columns < 75 || lines < 20) {
1522 		endwin();
1523 		printf("Your terminal should have at "
1524 			"least 20 lines and 75 columns\n");
1525 		return 1;
1526 	}
1527 
1528 	notimeout(stdscr, FALSE);
1529 #if NCURSES_REENTRANT
1530 	set_escdelay(1);
1531 #else
1532 	ESCDELAY = 1;
1533 #endif
1534 
1535 	/* set btns menu */
1536 	curses_menu = new_menu(curses_menu_items);
1537 	menu_opts_off(curses_menu, O_SHOWDESC);
1538 	menu_opts_on(curses_menu, O_SHOWMATCH);
1539 	menu_opts_on(curses_menu, O_ONEVALUE);
1540 	menu_opts_on(curses_menu, O_NONCYCLIC);
1541 	menu_opts_on(curses_menu, O_IGNORECASE);
1542 	set_menu_mark(curses_menu, " ");
1543 	set_menu_fore(curses_menu, attr_main_menu_fore);
1544 	set_menu_back(curses_menu, attr_main_menu_back);
1545 	set_menu_grey(curses_menu, attr_main_menu_grey);
1546 
1547 	set_config_filename(conf_get_configname());
1548 	setup_windows();
1549 
1550 	/* check for KEY_FUNC(1) */
1551 	if (has_key(KEY_F(1)) == FALSE) {
1552 		show_scroll_win(main_window,
1553 				"Instructions",
1554 				menu_no_f_instructions);
1555 	}
1556 
1557 	conf_set_message_callback(conf_message_callback);
1558 	/* do the work */
1559 	while (!global_exit) {
1560 		conf(&rootmenu);
1561 		if (!global_exit && do_exit() == 0)
1562 			break;
1563 	}
1564 	/* ok, we are done */
1565 	unpost_menu(curses_menu);
1566 	free_menu(curses_menu);
1567 	delwin(main_window);
1568 	clear();
1569 	refresh();
1570 	endwin();
1571 	return 0;
1572 }
1573