xref: /linux/scripts/kconfig/nconf.c (revision 6c07fd84977b605b6a4ceb03b38e6325974f06d6)
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 "lkc.h"
15 #include "mnconf-common.h"
16 #include "nconf.h"
17 #include <ctype.h>
18 
19 static const char nconf_global_help[] =
20 "Help windows\n"
21 "------------\n"
22 "o  Global help:  Unless in a data entry window, pressing <F1> will give \n"
23 "   you the global help window, which you are just reading.\n"
24 "\n"
25 "o  A short version of the global help is available by pressing <F3>.\n"
26 "\n"
27 "o  Local help:  To get help related to the current menu entry, use any\n"
28 "   of <?> <h>, or if in a data entry window then press <F1>.\n"
29 "\n"
30 "\n"
31 "Menu entries\n"
32 "------------\n"
33 "This interface lets you select features and parameters for the kernel\n"
34 "build.  Kernel features can either be built-in, modularized, or removed.\n"
35 "Parameters must be entered as text or decimal or hexadecimal numbers.\n"
36 "\n"
37 "Menu entries beginning with following braces represent features that\n"
38 "  [ ]  can be built in or removed\n"
39 "  < >  can be built in, modularized or removed\n"
40 "  { }  can be built in or modularized, are selected by another feature\n"
41 "  - -  are selected by another feature\n"
42 "  XXX  cannot be selected.  Symbol Info <F2> tells you why.\n"
43 "*, M or whitespace inside braces means to build in, build as a module\n"
44 "or to exclude the feature respectively.\n"
45 "\n"
46 "To change any of these features, highlight it with the movement keys\n"
47 "listed below and press <y> to build it in, <m> to make it a module or\n"
48 "<n> to remove it.  You may press the <Space> key to cycle through the\n"
49 "available options.\n"
50 "\n"
51 "A trailing \"--->\" designates a submenu, a trailing \"----\" an\n"
52 "empty submenu.\n"
53 "\n"
54 "Menu navigation keys\n"
55 "----------------------------------------------------------------------\n"
56 "Linewise up                 <Up>    <k>\n"
57 "Linewise down               <Down>  <j>\n"
58 "Pagewise up                 <Page Up>\n"
59 "Pagewise down               <Page Down>\n"
60 "First entry                 <Home>\n"
61 "Last entry                  <End>\n"
62 "Enter a submenu             <Right>  <Enter>\n"
63 "Go back to parent menu      <Left>   <Esc>  <F5>\n"
64 "Close a help window         <Enter>  <Esc>  <F5>\n"
65 "Close entry window, apply   <Enter>\n"
66 "Close entry window, forget  <Esc>  <F5>\n"
67 "Start incremental, case-insensitive search for STRING in menu entries,\n"
68 "    no regex support, STRING is displayed in upper left corner\n"
69 "                            </>STRING\n"
70 "    Remove last character   <Backspace>\n"
71 "    Jump to next hit        <Down>\n"
72 "    Jump to previous hit    <Up>\n"
73 "Exit menu search mode       </>  <Esc>\n"
74 "Search for configuration variables with or without leading CONFIG_\n"
75 "                            <F8>RegExpr<Enter>\n"
76 "Verbose search help         <F8><F1>\n"
77 "----------------------------------------------------------------------\n"
78 "\n"
79 "Unless in a data entry window, key <1> may be used instead of <F1>,\n"
80 "<2> instead of <F2>, etc.\n"
81 "\n"
82 "\n"
83 "Radiolist (Choice list)\n"
84 "-----------------------\n"
85 "Use the movement keys listed above to select the option you wish to set\n"
86 "and press <Space>.\n"
87 "\n"
88 "\n"
89 "Data entry\n"
90 "----------\n"
91 "Enter the requested information and press <Enter>.  Hexadecimal values\n"
92 "may be entered without the \"0x\" prefix.\n"
93 "\n"
94 "\n"
95 "Text Box (Help Window)\n"
96 "----------------------\n"
97 "Use movement keys as listed in table above.\n"
98 "\n"
99 "Press any of <Enter> <Esc> <q> <F5> <F9> to exit.\n"
100 "\n"
101 "\n"
102 "Alternate configuration files\n"
103 "-----------------------------\n"
104 "nconfig supports switching between different configurations.\n"
105 "Press <F6> to save your current configuration.  Press <F7> and enter\n"
106 "a file name to load a previously saved configuration.\n"
107 "\n"
108 "\n"
109 "Terminal configuration\n"
110 "----------------------\n"
111 "If you use nconfig in a xterm window, make sure your TERM environment\n"
112 "variable specifies a terminal configuration which supports at least\n"
113 "16 colors.  Otherwise nconfig will look rather bad.\n"
114 "\n"
115 "If the \"stty size\" command reports the current terminalsize correctly,\n"
116 "nconfig will adapt to sizes larger than the traditional 80x25 \"standard\"\n"
117 "and display longer menus properly.\n"
118 "\n"
119 "\n"
120 "Single menu mode\n"
121 "----------------\n"
122 "If you prefer to have all of the menu entries listed in a single menu,\n"
123 "rather than the default multimenu hierarchy, run nconfig with\n"
124 "NCONFIG_MODE environment variable set to single_menu.  Example:\n"
125 "\n"
126 "make NCONFIG_MODE=single_menu nconfig\n"
127 "\n"
128 "<Enter> will then unfold the appropriate category, or fold it if it\n"
129 "is already unfolded.  Folded menu entries will be designated by a\n"
130 "leading \"++>\" and unfolded entries by a leading \"-->\".\n"
131 "\n"
132 "Note that this mode can eventually be a little more CPU expensive than\n"
133 "the default mode, especially with a larger number of unfolded submenus.\n"
134 "\n",
135 menu_no_f_instructions[] =
136 "Legend:  [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
137 "Submenus are designated by a trailing \"--->\", empty ones by \"----\".\n"
138 "\n"
139 "Use the following keys to navigate the menus:\n"
140 "Move up or down with <Up> and <Down>.\n"
141 "Enter a submenu with <Enter> or <Right>.\n"
142 "Exit a submenu to its parent menu with <Esc> or <Left>.\n"
143 "Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
144 "Pressing <Space> cycles through the available options.\n"
145 "To search for menu entries press </>.\n"
146 "<Esc> always leaves the current window.\n"
147 "\n"
148 "You do not have function keys support.\n"
149 "Press <1> instead of <F1>, <2> instead of <F2>, etc.\n"
150 "For verbose global help use key <1>.\n"
151 "For help related to the current menu entry press <?> or <h>.\n",
152 menu_instructions[] =
153 "Legend:  [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
154 "Submenus are designated by a trailing \"--->\", empty ones by \"----\".\n"
155 "\n"
156 "Use the following keys to navigate the menus:\n"
157 "Move up or down with <Up> or <Down>.\n"
158 "Enter a submenu with <Enter> or <Right>.\n"
159 "Exit a submenu to its parent menu with <Esc> or <Left>.\n"
160 "Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
161 "Pressing <Space> cycles through the available options.\n"
162 "To search for menu entries press </>.\n"
163 "<Esc> always leaves the current window.\n"
164 "\n"
165 "Pressing <1> may be used instead of <F1>, <2> instead of <F2>, etc.\n"
166 "For verbose global help press <F1>.\n"
167 "For help related to the current menu entry press <?> or <h>.\n",
168 radiolist_instructions[] =
169 "Press <Up>, <Down>, <Home> or <End> to navigate a radiolist, select\n"
170 "with <Space>.\n"
171 "For help related to the current entry press <?> or <h>.\n"
172 "For global help press <F1>.\n",
173 inputbox_instructions_int[] =
174 "Please enter a decimal value.\n"
175 "Fractions will not be accepted.\n"
176 "Press <Enter> to apply, <Esc> to cancel.",
177 inputbox_instructions_hex[] =
178 "Please enter a hexadecimal value.\n"
179 "Press <Enter> to apply, <Esc> to cancel.",
180 inputbox_instructions_string[] =
181 "Please enter a string value.\n"
182 "Press <Enter> to apply, <Esc> to cancel.",
183 setmod_text[] =
184 "This feature depends on another feature which has been configured as a\n"
185 "module.  As a result, the current feature will be built as a module too.",
186 load_config_text[] =
187 "Enter the name of the configuration file you wish to load.\n"
188 "Accept the name shown to restore the configuration you last\n"
189 "retrieved.  Leave empty to abort.",
190 load_config_help[] =
191 "For various reasons, one may wish to keep several different\n"
192 "configurations available on a single machine.\n"
193 "\n"
194 "If you have saved a previous configuration in a file other than the\n"
195 "default one, entering its name here will allow you to load and modify\n"
196 "that configuration.\n"
197 "\n"
198 "Leave empty to abort.\n",
199 save_config_text[] =
200 "Enter a filename to which this configuration should be saved\n"
201 "as an alternate.  Leave empty to abort.",
202 save_config_help[] =
203 "For various reasons, one may wish to keep several different\n"
204 "configurations available on a single machine.\n"
205 "\n"
206 "Entering a file name here will allow you to later retrieve, modify\n"
207 "and use the current configuration as an alternate to whatever\n"
208 "configuration options you have selected at that time.\n"
209 "\n"
210 "Leave empty to abort.\n",
211 search_help[] =
212 "Search for symbols (configuration variable names CONFIG_*) and display\n"
213 "their relations.  Regular expressions are supported.\n"
214 "Example:  Search for \"^FOO\".\n"
215 "Result:\n"
216 "-----------------------------------------------------------------\n"
217 "Symbol: FOO [ = m]\n"
218 "Prompt: Foo bus is used to drive the bar HW\n"
219 "Defined at drivers/pci/Kconfig:47\n"
220 "Depends on: X86_LOCAL_APIC && X86_IO_APIC\n"
221 "Location:\n"
222 "  -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
223 "    -> PCI support (PCI [ = y])\n"
224 "(1)   -> PCI access mode (<choice> [ = y])\n"
225 "Selects: LIBCRC32\n"
226 "Selected by: BAR\n"
227 "-----------------------------------------------------------------\n"
228 "o  The line 'Prompt:' shows the text displayed for this symbol in\n"
229 "   the menu hierarchy.\n"
230 "o  The 'Defined at' line tells at what file / line number the symbol is\n"
231 "   defined.\n"
232 "o  The 'Depends on:' line lists symbols that need to be defined for\n"
233 "   this symbol to be visible and selectable in the menu.\n"
234 "o  The 'Location:' lines tell, where in the menu structure this symbol\n"
235 "   is located.\n"
236 "     A location followed by a [ = y] indicates that this is\n"
237 "     a selectable menu item, and the current value is displayed inside\n"
238 "     brackets.\n"
239 "     Press the key in the (#) prefix to jump directly to that\n"
240 "     location. You will be returned to the current search results\n"
241 "     after exiting this new menu.\n"
242 "o  The 'Selects:' line tells, what symbol will be automatically selected\n"
243 "   if this symbol is selected (y or m).\n"
244 "o  The 'Selected by' line tells what symbol has selected this symbol.\n"
245 "\n"
246 "Only relevant lines are shown.\n"
247 "\n\n"
248 "Search examples:\n"
249 "USB  => find all symbols containing USB\n"
250 "^USB => find all symbols starting with USB\n"
251 "USB$ => find all symbols ending with USB\n"
252 "\n";
253 
254 struct mitem {
255 	char str[256];
256 	char tag;
257 	void *usrptr;
258 	int is_visible;
259 };
260 
261 #define MAX_MENU_ITEMS 4096
262 static int show_all_items;
263 static int indent;
264 static struct menu *current_menu;
265 static int child_count;
266 static int single_menu_mode;
267 /* the window in which all information appears */
268 static WINDOW *main_window;
269 /* the largest size of the menu window */
270 static int mwin_max_lines;
271 static int mwin_max_cols;
272 /* the window in which we show option buttons */
273 static MENU *curses_menu;
274 static ITEM *curses_menu_items[MAX_MENU_ITEMS];
275 static struct mitem k_menu_items[MAX_MENU_ITEMS];
276 static unsigned int items_num;
277 static int global_exit;
278 /* the currently selected button */
279 static const char *current_instructions = menu_instructions;
280 
281 static char *dialog_input_result;
282 static int dialog_input_result_len;
283 
284 static void selected_conf(struct menu *menu, struct menu *active_menu);
285 static void conf(struct menu *menu);
286 static void conf_choice(struct menu *menu);
287 static void conf_string(struct menu *menu);
288 static void conf_load(void);
289 static void conf_save(void);
290 static void show_help(struct menu *menu);
291 static int do_exit(void);
292 static void setup_windows(void);
293 static void search_conf(void);
294 
295 typedef void (*function_key_handler_t)(int *key, struct menu *menu);
296 static void handle_f1(int *key, struct menu *current_item);
297 static void handle_f2(int *key, struct menu *current_item);
298 static void handle_f3(int *key, struct menu *current_item);
299 static void handle_f4(int *key, struct menu *current_item);
300 static void handle_f5(int *key, struct menu *current_item);
301 static void handle_f6(int *key, struct menu *current_item);
302 static void handle_f7(int *key, struct menu *current_item);
303 static void handle_f8(int *key, struct menu *current_item);
304 static void handle_f9(int *key, struct menu *current_item);
305 
306 struct function_keys {
307 	const char *key_str;
308 	const char *func;
309 	function_key key;
310 	function_key_handler_t handler;
311 };
312 
313 static const int function_keys_num = 9;
314 static struct function_keys function_keys[] = {
315 	{
316 		.key_str = "F1",
317 		.func = "Help",
318 		.key = F_HELP,
319 		.handler = handle_f1,
320 	},
321 	{
322 		.key_str = "F2",
323 		.func = "SymInfo",
324 		.key = F_SYMBOL,
325 		.handler = handle_f2,
326 	},
327 	{
328 		.key_str = "F3",
329 		.func = "Help 2",
330 		.key = F_INSTS,
331 		.handler = handle_f3,
332 	},
333 	{
334 		.key_str = "F4",
335 		.func = "ShowAll",
336 		.key = F_CONF,
337 		.handler = handle_f4,
338 	},
339 	{
340 		.key_str = "F5",
341 		.func = "Back",
342 		.key = F_BACK,
343 		.handler = handle_f5,
344 	},
345 	{
346 		.key_str = "F6",
347 		.func = "Save",
348 		.key = F_SAVE,
349 		.handler = handle_f6,
350 	},
351 	{
352 		.key_str = "F7",
353 		.func = "Load",
354 		.key = F_LOAD,
355 		.handler = handle_f7,
356 	},
357 	{
358 		.key_str = "F8",
359 		.func = "SymSearch",
360 		.key = F_SEARCH,
361 		.handler = handle_f8,
362 	},
363 	{
364 		.key_str = "F9",
365 		.func = "Exit",
366 		.key = F_EXIT,
367 		.handler = handle_f9,
368 	},
369 };
370 
371 static void print_function_line(void)
372 {
373 	int i;
374 	int offset = 1;
375 	const int skip = 1;
376 	int lines = getmaxy(stdscr);
377 
378 	for (i = 0; i < function_keys_num; i++) {
379 		wattrset(main_window, attr_function_highlight);
380 		mvwprintw(main_window, lines-3, offset,
381 				"%s",
382 				function_keys[i].key_str);
383 		wattrset(main_window, attr_function_text);
384 		offset += strlen(function_keys[i].key_str);
385 		mvwprintw(main_window, lines-3,
386 				offset, "%s",
387 				function_keys[i].func);
388 		offset += strlen(function_keys[i].func) + skip;
389 	}
390 	wattrset(main_window, attr_normal);
391 }
392 
393 /* help */
394 static void handle_f1(int *key, struct menu *current_item)
395 {
396 	show_scroll_win(main_window,
397 			"Global help", nconf_global_help);
398 	return;
399 }
400 
401 /* symbole help */
402 static void handle_f2(int *key, struct menu *current_item)
403 {
404 	show_help(current_item);
405 	return;
406 }
407 
408 /* instructions */
409 static void handle_f3(int *key, struct menu *current_item)
410 {
411 	show_scroll_win(main_window,
412 			"Short help",
413 			current_instructions);
414 	return;
415 }
416 
417 /* config */
418 static void handle_f4(int *key, struct menu *current_item)
419 {
420 	int res = btn_dialog(main_window,
421 			"Show all symbols?",
422 			2,
423 			"   <Show All>   ",
424 			"<Don't show all>");
425 	if (res == 0)
426 		show_all_items = 1;
427 	else if (res == 1)
428 		show_all_items = 0;
429 
430 	return;
431 }
432 
433 /* back */
434 static void handle_f5(int *key, struct menu *current_item)
435 {
436 	*key = KEY_LEFT;
437 	return;
438 }
439 
440 /* save */
441 static void handle_f6(int *key, struct menu *current_item)
442 {
443 	conf_save();
444 	return;
445 }
446 
447 /* load */
448 static void handle_f7(int *key, struct menu *current_item)
449 {
450 	conf_load();
451 	return;
452 }
453 
454 /* search */
455 static void handle_f8(int *key, struct menu *current_item)
456 {
457 	search_conf();
458 	return;
459 }
460 
461 /* exit */
462 static void handle_f9(int *key, struct menu *current_item)
463 {
464 	do_exit();
465 	return;
466 }
467 
468 /* return != 0 to indicate the key was handles */
469 static int process_special_keys(int *key, struct menu *menu)
470 {
471 	int i;
472 
473 	if (*key == KEY_RESIZE) {
474 		setup_windows();
475 		return 1;
476 	}
477 
478 	for (i = 0; i < function_keys_num; i++) {
479 		if (*key == KEY_F(function_keys[i].key) ||
480 		    *key == '0' + function_keys[i].key){
481 			function_keys[i].handler(key, menu);
482 			return 1;
483 		}
484 	}
485 
486 	return 0;
487 }
488 
489 static void clean_items(void)
490 {
491 	int i;
492 	for (i = 0; curses_menu_items[i]; i++)
493 		free_item(curses_menu_items[i]);
494 	bzero(curses_menu_items, sizeof(curses_menu_items));
495 	bzero(k_menu_items, sizeof(k_menu_items));
496 	items_num = 0;
497 }
498 
499 typedef enum {MATCH_TINKER_PATTERN_UP, MATCH_TINKER_PATTERN_DOWN,
500 	FIND_NEXT_MATCH_DOWN, FIND_NEXT_MATCH_UP} match_f;
501 
502 /* return the index of the matched item, or -1 if no such item exists */
503 static int get_mext_match(const char *match_str, match_f flag)
504 {
505 	int match_start, index;
506 
507 	/* Do not search if the menu is empty (i.e. items_num == 0) */
508 	match_start = item_index(current_item(curses_menu));
509 	if (match_start == ERR)
510 		return -1;
511 
512 	if (flag == FIND_NEXT_MATCH_DOWN)
513 		++match_start;
514 	else if (flag == FIND_NEXT_MATCH_UP)
515 		--match_start;
516 
517 	match_start = (match_start + items_num) % items_num;
518 	index = match_start;
519 	while (true) {
520 		char *str = k_menu_items[index].str;
521 		if (strcasestr(str, match_str) != NULL)
522 			return index;
523 		if (flag == FIND_NEXT_MATCH_UP ||
524 		    flag == MATCH_TINKER_PATTERN_UP)
525 			--index;
526 		else
527 			++index;
528 		index = (index + items_num) % items_num;
529 		if (index == match_start)
530 			return -1;
531 	}
532 }
533 
534 /* Make a new item. */
535 static void item_make(struct menu *menu, char tag, const char *fmt, ...)
536 {
537 	va_list ap;
538 
539 	if (items_num > MAX_MENU_ITEMS-1)
540 		return;
541 
542 	bzero(&k_menu_items[items_num], sizeof(k_menu_items[0]));
543 	k_menu_items[items_num].tag = tag;
544 	k_menu_items[items_num].usrptr = menu;
545 	if (menu != NULL)
546 		k_menu_items[items_num].is_visible =
547 			menu_is_visible(menu);
548 	else
549 		k_menu_items[items_num].is_visible = 1;
550 
551 	va_start(ap, fmt);
552 	vsnprintf(k_menu_items[items_num].str,
553 		  sizeof(k_menu_items[items_num].str),
554 		  fmt, ap);
555 	va_end(ap);
556 
557 	if (!k_menu_items[items_num].is_visible)
558 		memcpy(k_menu_items[items_num].str, "XXX", 3);
559 
560 	curses_menu_items[items_num] = new_item(
561 			k_menu_items[items_num].str,
562 			k_menu_items[items_num].str);
563 	set_item_userptr(curses_menu_items[items_num],
564 			&k_menu_items[items_num]);
565 	/*
566 	if (!k_menu_items[items_num].is_visible)
567 		item_opts_off(curses_menu_items[items_num], O_SELECTABLE);
568 	*/
569 
570 	items_num++;
571 	curses_menu_items[items_num] = NULL;
572 }
573 
574 /* very hackish. adds a string to the last item added */
575 static void item_add_str(const char *fmt, ...)
576 {
577 	va_list ap;
578 	int index = items_num-1;
579 	char new_str[256];
580 	char tmp_str[256];
581 
582 	if (index < 0)
583 		return;
584 
585 	va_start(ap, fmt);
586 	vsnprintf(new_str, sizeof(new_str), fmt, ap);
587 	va_end(ap);
588 	snprintf(tmp_str, sizeof(tmp_str), "%s%s",
589 			k_menu_items[index].str, new_str);
590 	strncpy(k_menu_items[index].str,
591 		tmp_str,
592 		sizeof(k_menu_items[index].str));
593 
594 	free_item(curses_menu_items[index]);
595 	curses_menu_items[index] = new_item(
596 			k_menu_items[index].str,
597 			k_menu_items[index].str);
598 	set_item_userptr(curses_menu_items[index],
599 			&k_menu_items[index]);
600 }
601 
602 /* get the tag of the currently selected item */
603 static char item_tag(void)
604 {
605 	ITEM *cur;
606 	struct mitem *mcur;
607 
608 	cur = current_item(curses_menu);
609 	if (cur == NULL)
610 		return 0;
611 	mcur = (struct mitem *) item_userptr(cur);
612 	return mcur->tag;
613 }
614 
615 static int curses_item_index(void)
616 {
617 	return  item_index(current_item(curses_menu));
618 }
619 
620 static void *item_data(void)
621 {
622 	ITEM *cur;
623 	struct mitem *mcur;
624 
625 	cur = current_item(curses_menu);
626 	if (!cur)
627 		return NULL;
628 	mcur = (struct mitem *) item_userptr(cur);
629 	return mcur->usrptr;
630 
631 }
632 
633 static int item_is_tag(char tag)
634 {
635 	return item_tag() == tag;
636 }
637 
638 static char filename[PATH_MAX+1];
639 static char menu_backtitle[PATH_MAX+128];
640 static void set_config_filename(const char *config_filename)
641 {
642 	snprintf(menu_backtitle, sizeof(menu_backtitle), "%s - %s",
643 		 config_filename, rootmenu.prompt->text);
644 
645 	snprintf(filename, sizeof(filename), "%s", config_filename);
646 }
647 
648 /* return = 0 means we are successful.
649  * -1 means go on doing what you were doing
650  */
651 static int do_exit(void)
652 {
653 	int res;
654 	if (!conf_get_changed()) {
655 		global_exit = 1;
656 		return 0;
657 	}
658 	res = btn_dialog(main_window,
659 			"Do you wish to save your new configuration?\n"
660 				"<ESC> to cancel and resume nconfig.",
661 			2,
662 			"   <save>   ",
663 			"<don't save>");
664 	if (res == KEY_EXIT) {
665 		global_exit = 0;
666 		return -1;
667 	}
668 
669 	/* if we got here, the user really wants to exit */
670 	switch (res) {
671 	case 0:
672 		res = conf_write(filename);
673 		if (res)
674 			btn_dialog(
675 				main_window,
676 				"Error during writing of configuration.\n"
677 				  "Your configuration changes were NOT saved.",
678 				  1,
679 				  "<OK>");
680 		conf_write_autoconf(0);
681 		break;
682 	default:
683 		btn_dialog(
684 			main_window,
685 			"Your configuration changes were NOT saved.",
686 			1,
687 			"<OK>");
688 		break;
689 	}
690 	global_exit = 1;
691 	return 0;
692 }
693 
694 
695 static void search_conf(void)
696 {
697 	struct symbol **sym_arr;
698 	struct gstr res;
699 	struct gstr title;
700 	char *dialog_input;
701 	int dres, vscroll = 0, hscroll = 0;
702 	bool again;
703 
704 	title = str_new();
705 	str_printf( &title, "Enter (sub)string or regexp to search for "
706 			      "(with or without \"%s\")", CONFIG_);
707 
708 again:
709 	dres = dialog_inputbox(main_window,
710 			"Search Configuration Parameter",
711 			str_get(&title),
712 			"", &dialog_input_result, &dialog_input_result_len);
713 	switch (dres) {
714 	case 0:
715 		break;
716 	case 1:
717 		show_scroll_win(main_window,
718 				"Search Configuration", search_help);
719 		goto again;
720 	default:
721 		str_free(&title);
722 		return;
723 	}
724 
725 	/* strip the prefix if necessary */
726 	dialog_input = dialog_input_result;
727 	if (strncasecmp(dialog_input_result, CONFIG_, strlen(CONFIG_)) == 0)
728 		dialog_input += strlen(CONFIG_);
729 
730 	sym_arr = sym_re_search(dialog_input);
731 
732 	do {
733 		LIST_HEAD(head);
734 		struct search_data data = {
735 			.head = &head,
736 			.target = NULL,
737 		};
738 		jump_key_char = 0;
739 		res = get_relations_str(sym_arr, &head);
740 		dres = show_scroll_win_ext(main_window,
741 				"Search Results", str_get(&res),
742 				&vscroll, &hscroll,
743 				handle_search_keys, &data);
744 		again = false;
745 		if (dres >= '1' && dres <= '9') {
746 			assert(data.target != NULL);
747 			selected_conf(data.target->parent, data.target);
748 			again = true;
749 		}
750 		str_free(&res);
751 	} while (again);
752 	free(sym_arr);
753 	str_free(&title);
754 }
755 
756 
757 static void build_conf(struct menu *menu)
758 {
759 	struct symbol *sym;
760 	struct property *prop;
761 	struct menu *child;
762 	int type, tmp, doint = 2;
763 	tristate val;
764 	char ch;
765 
766 	if (!menu || (!show_all_items && !menu_is_visible(menu)))
767 		return;
768 
769 	sym = menu->sym;
770 	prop = menu->prompt;
771 	if (!sym) {
772 		if (prop && menu != current_menu) {
773 			const char *prompt = menu_get_prompt(menu);
774 			enum prop_type ptype;
775 			ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
776 			switch (ptype) {
777 			case P_MENU:
778 				child_count++;
779 				if (single_menu_mode) {
780 					item_make(menu, 'm',
781 						"%s%*c%s",
782 						menu->data ? "-->" : "++>",
783 						indent + 1, ' ', prompt);
784 				} else
785 					item_make(menu, 'm',
786 						  "   %*c%s  %s",
787 						  indent + 1, ' ', prompt,
788 						  menu_is_empty(menu) ? "----" : "--->");
789 
790 				if (single_menu_mode && menu->data)
791 					goto conf_childs;
792 				return;
793 			case P_COMMENT:
794 				if (prompt) {
795 					child_count++;
796 					item_make(menu, ':',
797 						"   %*c*** %s ***",
798 						indent + 1, ' ',
799 						prompt);
800 				}
801 				break;
802 			default:
803 				if (prompt) {
804 					child_count++;
805 					item_make(menu, ':', "---%*c%s",
806 						indent + 1, ' ',
807 						prompt);
808 				}
809 			}
810 		} else
811 			doint = 0;
812 		goto conf_childs;
813 	}
814 
815 	type = sym_get_type(sym);
816 	if (sym_is_choice(sym)) {
817 		struct symbol *def_sym = sym_get_choice_value(sym);
818 		struct menu *def_menu = NULL;
819 
820 		child_count++;
821 		for (child = menu->list; child; child = child->next) {
822 			if (menu_is_visible(child) && child->sym == def_sym)
823 				def_menu = child;
824 		}
825 
826 		val = sym_get_tristate_value(sym);
827 		if (sym_is_changeable(sym)) {
828 			switch (type) {
829 			case S_BOOLEAN:
830 				item_make(menu, 't', "[%c]",
831 						val == no ? ' ' : '*');
832 				break;
833 			case S_TRISTATE:
834 				switch (val) {
835 				case yes:
836 					ch = '*';
837 					break;
838 				case mod:
839 					ch = 'M';
840 					break;
841 				default:
842 					ch = ' ';
843 					break;
844 				}
845 				item_make(menu, 't', "<%c>", ch);
846 				break;
847 			}
848 		} else {
849 			item_make(menu, def_menu ? 't' : ':', "   ");
850 		}
851 
852 		item_add_str("%*c%s", indent + 1,
853 				' ', menu_get_prompt(menu));
854 		if (val == yes) {
855 			if (def_menu) {
856 				item_add_str(" (%s)",
857 					menu_get_prompt(def_menu));
858 				item_add_str("  --->");
859 				if (def_menu->list) {
860 					indent += 2;
861 					build_conf(def_menu);
862 					indent -= 2;
863 				}
864 			}
865 			return;
866 		}
867 	} else {
868 		if (menu == current_menu) {
869 			item_make(menu, ':',
870 				"---%*c%s", indent + 1,
871 				' ', menu_get_prompt(menu));
872 			goto conf_childs;
873 		}
874 		child_count++;
875 		val = sym_get_tristate_value(sym);
876 		if (sym_is_choice_value(sym) && val == yes) {
877 			item_make(menu, ':', "   ");
878 		} else {
879 			switch (type) {
880 			case S_BOOLEAN:
881 				if (sym_is_changeable(sym))
882 					item_make(menu, 't', "[%c]",
883 						val == no ? ' ' : '*');
884 				else
885 					item_make(menu, 't', "-%c-",
886 						val == no ? ' ' : '*');
887 				break;
888 			case S_TRISTATE:
889 				switch (val) {
890 				case yes:
891 					ch = '*';
892 					break;
893 				case mod:
894 					ch = 'M';
895 					break;
896 				default:
897 					ch = ' ';
898 					break;
899 				}
900 				if (sym_is_changeable(sym)) {
901 					if (sym->rev_dep.tri == mod)
902 						item_make(menu,
903 							't', "{%c}", ch);
904 					else
905 						item_make(menu,
906 							't', "<%c>", ch);
907 				} else
908 					item_make(menu, 't', "-%c-", ch);
909 				break;
910 			default:
911 				tmp = 2 + strlen(sym_get_string_value(sym));
912 				item_make(menu, 's', "    (%s)",
913 						sym_get_string_value(sym));
914 				tmp = indent - tmp + 4;
915 				if (tmp < 0)
916 					tmp = 0;
917 				item_add_str("%*c%s%s", tmp, ' ',
918 						menu_get_prompt(menu),
919 						(sym_has_value(sym) ||
920 						 !sym_is_changeable(sym)) ? "" :
921 						" (NEW)");
922 				goto conf_childs;
923 			}
924 		}
925 		item_add_str("%*c%s%s", indent + 1, ' ',
926 				menu_get_prompt(menu),
927 				(sym_has_value(sym) || !sym_is_changeable(sym)) ?
928 				"" : " (NEW)");
929 		if (menu->prompt && menu->prompt->type == P_MENU) {
930 			item_add_str("  %s", menu_is_empty(menu) ? "----" : "--->");
931 			return;
932 		}
933 	}
934 
935 conf_childs:
936 	indent += doint;
937 	for (child = menu->list; child; child = child->next)
938 		build_conf(child);
939 	indent -= doint;
940 }
941 
942 static void reset_menu(void)
943 {
944 	unpost_menu(curses_menu);
945 	clean_items();
946 }
947 
948 /* adjust the menu to show this item.
949  * prefer not to scroll the menu if possible*/
950 static void center_item(int selected_index, int *last_top_row)
951 {
952 	int toprow;
953 
954 	set_top_row(curses_menu, *last_top_row);
955 	toprow = top_row(curses_menu);
956 	if (selected_index < toprow ||
957 	    selected_index >= toprow+mwin_max_lines) {
958 		toprow = max(selected_index-mwin_max_lines/2, 0);
959 		if (toprow >= item_count(curses_menu)-mwin_max_lines)
960 			toprow = item_count(curses_menu)-mwin_max_lines;
961 		set_top_row(curses_menu, toprow);
962 	}
963 	set_current_item(curses_menu,
964 			curses_menu_items[selected_index]);
965 	*last_top_row = toprow;
966 	post_menu(curses_menu);
967 	refresh_all_windows(main_window);
968 }
969 
970 /* this function assumes reset_menu has been called before */
971 static void show_menu(const char *prompt, const char *instructions,
972 		int selected_index, int *last_top_row)
973 {
974 	int maxx, maxy;
975 	WINDOW *menu_window;
976 
977 	current_instructions = instructions;
978 
979 	clear();
980 	print_in_middle(stdscr, 1, getmaxx(stdscr),
981 			menu_backtitle,
982 			attr_main_heading);
983 
984 	wattrset(main_window, attr_main_menu_box);
985 	box(main_window, 0, 0);
986 	wattrset(main_window, attr_main_menu_heading);
987 	mvwprintw(main_window, 0, 3, " %s ", prompt);
988 	wattrset(main_window, attr_normal);
989 
990 	set_menu_items(curses_menu, curses_menu_items);
991 
992 	/* position the menu at the middle of the screen */
993 	scale_menu(curses_menu, &maxy, &maxx);
994 	maxx = min(maxx, mwin_max_cols-2);
995 	maxy = mwin_max_lines;
996 	menu_window = derwin(main_window,
997 			maxy,
998 			maxx,
999 			2,
1000 			(mwin_max_cols-maxx)/2);
1001 	keypad(menu_window, TRUE);
1002 	set_menu_win(curses_menu, menu_window);
1003 	set_menu_sub(curses_menu, menu_window);
1004 
1005 	/* must reassert this after changing items, otherwise returns to a
1006 	 * default of 16
1007 	 */
1008 	set_menu_format(curses_menu, maxy, 1);
1009 	center_item(selected_index, last_top_row);
1010 	set_menu_format(curses_menu, maxy, 1);
1011 
1012 	print_function_line();
1013 
1014 	/* Post the menu */
1015 	post_menu(curses_menu);
1016 	refresh_all_windows(main_window);
1017 }
1018 
1019 static void adj_match_dir(match_f *match_direction)
1020 {
1021 	if (*match_direction == FIND_NEXT_MATCH_DOWN)
1022 		*match_direction =
1023 			MATCH_TINKER_PATTERN_DOWN;
1024 	else if (*match_direction == FIND_NEXT_MATCH_UP)
1025 		*match_direction =
1026 			MATCH_TINKER_PATTERN_UP;
1027 	/* else, do no change.. */
1028 }
1029 
1030 struct match_state
1031 {
1032 	int in_search;
1033 	match_f match_direction;
1034 	char pattern[256];
1035 };
1036 
1037 /* Return 0 means I have handled the key. In such a case, ans should hold the
1038  * item to center, or -1 otherwise.
1039  * Else return -1 .
1040  */
1041 static int do_match(int key, struct match_state *state, int *ans)
1042 {
1043 	char c = (char) key;
1044 	int terminate_search = 0;
1045 	*ans = -1;
1046 	if (key == '/' || (state->in_search && key == 27)) {
1047 		move(0, 0);
1048 		refresh();
1049 		clrtoeol();
1050 		state->in_search = 1-state->in_search;
1051 		bzero(state->pattern, sizeof(state->pattern));
1052 		state->match_direction = MATCH_TINKER_PATTERN_DOWN;
1053 		return 0;
1054 	} else if (!state->in_search)
1055 		return 1;
1056 
1057 	if (isalnum(c) || isgraph(c) || c == ' ') {
1058 		state->pattern[strlen(state->pattern)] = c;
1059 		state->pattern[strlen(state->pattern)] = '\0';
1060 		adj_match_dir(&state->match_direction);
1061 		*ans = get_mext_match(state->pattern,
1062 				state->match_direction);
1063 	} else if (key == KEY_DOWN) {
1064 		state->match_direction = FIND_NEXT_MATCH_DOWN;
1065 		*ans = get_mext_match(state->pattern,
1066 				state->match_direction);
1067 	} else if (key == KEY_UP) {
1068 		state->match_direction = FIND_NEXT_MATCH_UP;
1069 		*ans = get_mext_match(state->pattern,
1070 				state->match_direction);
1071 	} else if (key == KEY_BACKSPACE || key == 8 || key == 127) {
1072 		state->pattern[strlen(state->pattern)-1] = '\0';
1073 		adj_match_dir(&state->match_direction);
1074 	} else
1075 		terminate_search = 1;
1076 
1077 	if (terminate_search) {
1078 		state->in_search = 0;
1079 		bzero(state->pattern, sizeof(state->pattern));
1080 		move(0, 0);
1081 		refresh();
1082 		clrtoeol();
1083 		return -1;
1084 	}
1085 	return 0;
1086 }
1087 
1088 static void conf(struct menu *menu)
1089 {
1090 	selected_conf(menu, NULL);
1091 }
1092 
1093 static void selected_conf(struct menu *menu, struct menu *active_menu)
1094 {
1095 	struct menu *submenu = NULL;
1096 	struct symbol *sym;
1097 	int i, res;
1098 	int current_index = 0;
1099 	int last_top_row = 0;
1100 	struct match_state match_state = {
1101 		.in_search = 0,
1102 		.match_direction = MATCH_TINKER_PATTERN_DOWN,
1103 		.pattern = "",
1104 	};
1105 
1106 	while (!global_exit) {
1107 		reset_menu();
1108 		current_menu = menu;
1109 		build_conf(menu);
1110 		if (!child_count)
1111 			break;
1112 
1113 		if (active_menu != NULL) {
1114 			for (i = 0; i < items_num; i++) {
1115 				struct mitem *mcur;
1116 
1117 				mcur = (struct mitem *) item_userptr(curses_menu_items[i]);
1118 				if ((struct menu *) mcur->usrptr == active_menu) {
1119 					current_index = i;
1120 					break;
1121 				}
1122 			}
1123 			active_menu = NULL;
1124 		}
1125 
1126 		show_menu(menu_get_prompt(menu), menu_instructions,
1127 			  current_index, &last_top_row);
1128 		keypad((menu_win(curses_menu)), TRUE);
1129 		while (!global_exit) {
1130 			if (match_state.in_search) {
1131 				mvprintw(0, 0,
1132 					"searching: %s", match_state.pattern);
1133 				clrtoeol();
1134 			}
1135 			refresh_all_windows(main_window);
1136 			res = wgetch(menu_win(curses_menu));
1137 			if (!res)
1138 				break;
1139 			if (do_match(res, &match_state, &current_index) == 0) {
1140 				if (current_index != -1)
1141 					center_item(current_index,
1142 						    &last_top_row);
1143 				continue;
1144 			}
1145 			if (process_special_keys(&res,
1146 						(struct menu *) item_data()))
1147 				break;
1148 			switch (res) {
1149 			case KEY_DOWN:
1150 			case 'j':
1151 				menu_driver(curses_menu, REQ_DOWN_ITEM);
1152 				break;
1153 			case KEY_UP:
1154 			case 'k':
1155 				menu_driver(curses_menu, REQ_UP_ITEM);
1156 				break;
1157 			case KEY_NPAGE:
1158 				menu_driver(curses_menu, REQ_SCR_DPAGE);
1159 				break;
1160 			case KEY_PPAGE:
1161 				menu_driver(curses_menu, REQ_SCR_UPAGE);
1162 				break;
1163 			case KEY_HOME:
1164 				menu_driver(curses_menu, REQ_FIRST_ITEM);
1165 				break;
1166 			case KEY_END:
1167 				menu_driver(curses_menu, REQ_LAST_ITEM);
1168 				break;
1169 			case 'h':
1170 			case '?':
1171 				show_help((struct menu *) item_data());
1172 				break;
1173 			}
1174 			if (res == 10 || res == 27 ||
1175 				res == 32 || res == 'n' || res == 'y' ||
1176 				res == KEY_LEFT || res == KEY_RIGHT ||
1177 				res == 'm')
1178 				break;
1179 			refresh_all_windows(main_window);
1180 		}
1181 
1182 		refresh_all_windows(main_window);
1183 		/* if ESC or left*/
1184 		if (res == 27 || (menu != &rootmenu && res == KEY_LEFT))
1185 			break;
1186 
1187 		/* remember location in the menu */
1188 		last_top_row = top_row(curses_menu);
1189 		current_index = curses_item_index();
1190 
1191 		if (!item_tag())
1192 			continue;
1193 
1194 		submenu = (struct menu *) item_data();
1195 		if (!submenu || !menu_is_visible(submenu))
1196 			continue;
1197 		sym = submenu->sym;
1198 
1199 		switch (res) {
1200 		case ' ':
1201 			if (item_is_tag('t'))
1202 				sym_toggle_tristate_value(sym);
1203 			else if (item_is_tag('m'))
1204 				conf(submenu);
1205 			break;
1206 		case KEY_RIGHT:
1207 		case 10: /* ENTER WAS PRESSED */
1208 			switch (item_tag()) {
1209 			case 'm':
1210 				if (single_menu_mode)
1211 					submenu->data =
1212 						(void *) (long) !submenu->data;
1213 				else
1214 					conf(submenu);
1215 				break;
1216 			case 't':
1217 				if (sym_is_choice(sym) &&
1218 				    sym_get_tristate_value(sym) == yes)
1219 					conf_choice(submenu);
1220 				else if (submenu->prompt &&
1221 					 submenu->prompt->type == P_MENU)
1222 					conf(submenu);
1223 				else if (res == 10)
1224 					sym_toggle_tristate_value(sym);
1225 				break;
1226 			case 's':
1227 				conf_string(submenu);
1228 				break;
1229 			}
1230 			break;
1231 		case 'y':
1232 			if (item_is_tag('t')) {
1233 				if (sym_set_tristate_value(sym, yes))
1234 					break;
1235 				if (sym_set_tristate_value(sym, mod))
1236 					btn_dialog(main_window, setmod_text, 0);
1237 			}
1238 			break;
1239 		case 'n':
1240 			if (item_is_tag('t'))
1241 				sym_set_tristate_value(sym, no);
1242 			break;
1243 		case 'm':
1244 			if (item_is_tag('t'))
1245 				sym_set_tristate_value(sym, mod);
1246 			break;
1247 		}
1248 	}
1249 }
1250 
1251 static void conf_message_callback(const char *s)
1252 {
1253 	btn_dialog(main_window, s, 1, "<OK>");
1254 }
1255 
1256 static void show_help(struct menu *menu)
1257 {
1258 	struct gstr help;
1259 
1260 	if (!menu)
1261 		return;
1262 
1263 	help = str_new();
1264 	menu_get_ext_help(menu, &help);
1265 	show_scroll_win(main_window, menu_get_prompt(menu), str_get(&help));
1266 	str_free(&help);
1267 }
1268 
1269 static void conf_choice(struct menu *menu)
1270 {
1271 	const char *prompt = menu_get_prompt(menu);
1272 	struct menu *child = NULL;
1273 	struct symbol *active;
1274 	int selected_index = 0;
1275 	int last_top_row = 0;
1276 	int res, i = 0;
1277 	struct match_state match_state = {
1278 		.in_search = 0,
1279 		.match_direction = MATCH_TINKER_PATTERN_DOWN,
1280 		.pattern = "",
1281 	};
1282 
1283 	active = sym_get_choice_value(menu->sym);
1284 	/* this is mostly duplicated from the conf() function. */
1285 	while (!global_exit) {
1286 		reset_menu();
1287 
1288 		for (i = 0, child = menu->list; child; child = child->next) {
1289 			if (!show_all_items && !menu_is_visible(child))
1290 				continue;
1291 
1292 			if (child->sym == sym_get_choice_value(menu->sym))
1293 				item_make(child, ':', "<X> %s",
1294 						menu_get_prompt(child));
1295 			else if (child->sym)
1296 				item_make(child, ':', "    %s",
1297 						menu_get_prompt(child));
1298 			else
1299 				item_make(child, ':', "*** %s ***",
1300 						menu_get_prompt(child));
1301 
1302 			if (child->sym == active){
1303 				last_top_row = top_row(curses_menu);
1304 				selected_index = i;
1305 			}
1306 			i++;
1307 		}
1308 		show_menu(prompt ? prompt : "Choice Menu",
1309 				radiolist_instructions,
1310 				selected_index,
1311 				&last_top_row);
1312 		while (!global_exit) {
1313 			if (match_state.in_search) {
1314 				mvprintw(0, 0, "searching: %s",
1315 					 match_state.pattern);
1316 				clrtoeol();
1317 			}
1318 			refresh_all_windows(main_window);
1319 			res = wgetch(menu_win(curses_menu));
1320 			if (!res)
1321 				break;
1322 			if (do_match(res, &match_state, &selected_index) == 0) {
1323 				if (selected_index != -1)
1324 					center_item(selected_index,
1325 						    &last_top_row);
1326 				continue;
1327 			}
1328 			if (process_special_keys(
1329 						&res,
1330 						(struct menu *) item_data()))
1331 				break;
1332 			switch (res) {
1333 			case KEY_DOWN:
1334 			case 'j':
1335 				menu_driver(curses_menu, REQ_DOWN_ITEM);
1336 				break;
1337 			case KEY_UP:
1338 			case 'k':
1339 				menu_driver(curses_menu, REQ_UP_ITEM);
1340 				break;
1341 			case KEY_NPAGE:
1342 				menu_driver(curses_menu, REQ_SCR_DPAGE);
1343 				break;
1344 			case KEY_PPAGE:
1345 				menu_driver(curses_menu, REQ_SCR_UPAGE);
1346 				break;
1347 			case KEY_HOME:
1348 				menu_driver(curses_menu, REQ_FIRST_ITEM);
1349 				break;
1350 			case KEY_END:
1351 				menu_driver(curses_menu, REQ_LAST_ITEM);
1352 				break;
1353 			case 'h':
1354 			case '?':
1355 				show_help((struct menu *) item_data());
1356 				break;
1357 			}
1358 			if (res == 10 || res == 27 || res == ' ' ||
1359 					res == KEY_LEFT){
1360 				break;
1361 			}
1362 			refresh_all_windows(main_window);
1363 		}
1364 		/* if ESC or left */
1365 		if (res == 27 || res == KEY_LEFT)
1366 			break;
1367 
1368 		child = item_data();
1369 		if (!child || !menu_is_visible(child) || !child->sym)
1370 			continue;
1371 		switch (res) {
1372 		case ' ':
1373 		case  10:
1374 		case KEY_RIGHT:
1375 			sym_set_tristate_value(child->sym, yes);
1376 			return;
1377 		case 'h':
1378 		case '?':
1379 			show_help(child);
1380 			active = child->sym;
1381 			break;
1382 		case KEY_EXIT:
1383 			return;
1384 		}
1385 	}
1386 }
1387 
1388 static void conf_string(struct menu *menu)
1389 {
1390 	const char *prompt = menu_get_prompt(menu);
1391 
1392 	while (1) {
1393 		int res;
1394 		const char *heading;
1395 
1396 		switch (sym_get_type(menu->sym)) {
1397 		case S_INT:
1398 			heading = inputbox_instructions_int;
1399 			break;
1400 		case S_HEX:
1401 			heading = inputbox_instructions_hex;
1402 			break;
1403 		case S_STRING:
1404 			heading = inputbox_instructions_string;
1405 			break;
1406 		default:
1407 			heading = "Internal nconf error!";
1408 		}
1409 		res = dialog_inputbox(main_window,
1410 				prompt ? prompt : "Main Menu",
1411 				heading,
1412 				sym_get_string_value(menu->sym),
1413 				&dialog_input_result,
1414 				&dialog_input_result_len);
1415 		switch (res) {
1416 		case 0:
1417 			if (sym_set_string_value(menu->sym,
1418 						dialog_input_result))
1419 				return;
1420 			btn_dialog(main_window,
1421 				"You have made an invalid entry.", 0);
1422 			break;
1423 		case 1:
1424 			show_help(menu);
1425 			break;
1426 		case KEY_EXIT:
1427 			return;
1428 		}
1429 	}
1430 }
1431 
1432 static void conf_load(void)
1433 {
1434 	while (1) {
1435 		int res;
1436 		res = dialog_inputbox(main_window,
1437 				NULL, load_config_text,
1438 				filename,
1439 				&dialog_input_result,
1440 				&dialog_input_result_len);
1441 		switch (res) {
1442 		case 0:
1443 			if (!dialog_input_result[0])
1444 				return;
1445 			if (!conf_read(dialog_input_result)) {
1446 				set_config_filename(dialog_input_result);
1447 				conf_set_changed(true);
1448 				return;
1449 			}
1450 			btn_dialog(main_window, "File does not exist!", 0);
1451 			break;
1452 		case 1:
1453 			show_scroll_win(main_window,
1454 					"Load Alternate Configuration",
1455 					load_config_help);
1456 			break;
1457 		case KEY_EXIT:
1458 			return;
1459 		}
1460 	}
1461 }
1462 
1463 static void conf_save(void)
1464 {
1465 	while (1) {
1466 		int res;
1467 		res = dialog_inputbox(main_window,
1468 				NULL, save_config_text,
1469 				filename,
1470 				&dialog_input_result,
1471 				&dialog_input_result_len);
1472 		switch (res) {
1473 		case 0:
1474 			if (!dialog_input_result[0])
1475 				return;
1476 			res = conf_write(dialog_input_result);
1477 			if (!res) {
1478 				set_config_filename(dialog_input_result);
1479 				return;
1480 			}
1481 			btn_dialog(main_window, "Can't create file!",
1482 				1, "<OK>");
1483 			break;
1484 		case 1:
1485 			show_scroll_win(main_window,
1486 				"Save Alternate Configuration",
1487 				save_config_help);
1488 			break;
1489 		case KEY_EXIT:
1490 			return;
1491 		}
1492 	}
1493 }
1494 
1495 static void setup_windows(void)
1496 {
1497 	int lines, columns;
1498 
1499 	getmaxyx(stdscr, lines, columns);
1500 
1501 	if (main_window != NULL)
1502 		delwin(main_window);
1503 
1504 	/* set up the menu and menu window */
1505 	main_window = newwin(lines-2, columns-2, 2, 1);
1506 	keypad(main_window, TRUE);
1507 	mwin_max_lines = lines-7;
1508 	mwin_max_cols = columns-6;
1509 
1510 	/* panels order is from bottom to top */
1511 	new_panel(main_window);
1512 }
1513 
1514 int main(int ac, char **av)
1515 {
1516 	int lines, columns;
1517 	char *mode;
1518 
1519 	if (ac > 1 && strcmp(av[1], "-s") == 0) {
1520 		/* Silence conf_read() until the real callback is set up */
1521 		conf_set_message_callback(NULL);
1522 		av++;
1523 	}
1524 	conf_parse(av[1]);
1525 	conf_read(NULL);
1526 
1527 	mode = getenv("NCONFIG_MODE");
1528 	if (mode) {
1529 		if (!strcasecmp(mode, "single_menu"))
1530 			single_menu_mode = 1;
1531 	}
1532 
1533 	/* Initialize curses */
1534 	initscr();
1535 	/* set color theme */
1536 	set_colors();
1537 
1538 	cbreak();
1539 	noecho();
1540 	keypad(stdscr, TRUE);
1541 	curs_set(0);
1542 
1543 	getmaxyx(stdscr, lines, columns);
1544 	if (columns < 75 || lines < 20) {
1545 		endwin();
1546 		printf("Your terminal should have at "
1547 			"least 20 lines and 75 columns\n");
1548 		return 1;
1549 	}
1550 
1551 	notimeout(stdscr, FALSE);
1552 #if NCURSES_REENTRANT
1553 	set_escdelay(1);
1554 #else
1555 	ESCDELAY = 1;
1556 #endif
1557 
1558 	/* set btns menu */
1559 	curses_menu = new_menu(curses_menu_items);
1560 	menu_opts_off(curses_menu, O_SHOWDESC);
1561 	menu_opts_on(curses_menu, O_SHOWMATCH);
1562 	menu_opts_on(curses_menu, O_ONEVALUE);
1563 	menu_opts_on(curses_menu, O_NONCYCLIC);
1564 	menu_opts_on(curses_menu, O_IGNORECASE);
1565 	set_menu_mark(curses_menu, " ");
1566 	set_menu_fore(curses_menu, attr_main_menu_fore);
1567 	set_menu_back(curses_menu, attr_main_menu_back);
1568 	set_menu_grey(curses_menu, attr_main_menu_grey);
1569 
1570 	set_config_filename(conf_get_configname());
1571 	setup_windows();
1572 
1573 	/* check for KEY_FUNC(1) */
1574 	if (has_key(KEY_F(1)) == FALSE) {
1575 		show_scroll_win(main_window,
1576 				"Instructions",
1577 				menu_no_f_instructions);
1578 	}
1579 
1580 	conf_set_message_callback(conf_message_callback);
1581 	/* do the work */
1582 	while (!global_exit) {
1583 		conf(&rootmenu);
1584 		if (!global_exit && do_exit() == 0)
1585 			break;
1586 	}
1587 	/* ok, we are done */
1588 	unpost_menu(curses_menu);
1589 	free_menu(curses_menu);
1590 	delwin(main_window);
1591 	clear();
1592 	refresh();
1593 	endwin();
1594 	return 0;
1595 }
1596