xref: /linux/scripts/kconfig/nconf.c (revision 7255fcc80d4b525cc10cfaaf7f485830d4ed2000)
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 (type) {
830 			case S_BOOLEAN:
831 				item_make(menu, 't', "[%c]",
832 						val == no ? ' ' : '*');
833 				break;
834 			case S_TRISTATE:
835 				switch (val) {
836 				case yes:
837 					ch = '*';
838 					break;
839 				case mod:
840 					ch = 'M';
841 					break;
842 				default:
843 					ch = ' ';
844 					break;
845 				}
846 				item_make(menu, 't', "<%c>", ch);
847 				break;
848 			}
849 		} else {
850 			item_make(menu, def_menu ? 't' : ':', "   ");
851 		}
852 
853 		item_add_str("%*c%s", indent + 1,
854 				' ', menu_get_prompt(menu));
855 		if (val == yes) {
856 			if (def_menu) {
857 				item_add_str(" (%s)",
858 					menu_get_prompt(def_menu));
859 				item_add_str("  --->");
860 				if (def_menu->list) {
861 					indent += 2;
862 					build_conf(def_menu);
863 					indent -= 2;
864 				}
865 			}
866 			return;
867 		}
868 	} else {
869 		if (menu == current_menu) {
870 			item_make(menu, ':',
871 				"---%*c%s", indent + 1,
872 				' ', menu_get_prompt(menu));
873 			goto conf_childs;
874 		}
875 		child_count++;
876 		val = sym_get_tristate_value(sym);
877 		if (sym_is_choice_value(sym) && val == yes) {
878 			item_make(menu, ':', "   ");
879 		} else {
880 			switch (type) {
881 			case S_BOOLEAN:
882 				if (sym_is_changeable(sym))
883 					item_make(menu, 't', "[%c]",
884 						val == no ? ' ' : '*');
885 				else
886 					item_make(menu, 't', "-%c-",
887 						val == no ? ' ' : '*');
888 				break;
889 			case S_TRISTATE:
890 				switch (val) {
891 				case yes:
892 					ch = '*';
893 					break;
894 				case mod:
895 					ch = 'M';
896 					break;
897 				default:
898 					ch = ' ';
899 					break;
900 				}
901 				if (sym_is_changeable(sym)) {
902 					if (sym->rev_dep.tri == mod)
903 						item_make(menu,
904 							't', "{%c}", ch);
905 					else
906 						item_make(menu,
907 							't', "<%c>", ch);
908 				} else
909 					item_make(menu, 't', "-%c-", ch);
910 				break;
911 			default:
912 				tmp = 2 + strlen(sym_get_string_value(sym));
913 				item_make(menu, 's', "    (%s)",
914 						sym_get_string_value(sym));
915 				tmp = indent - tmp + 4;
916 				if (tmp < 0)
917 					tmp = 0;
918 				item_add_str("%*c%s%s", tmp, ' ',
919 						menu_get_prompt(menu),
920 						(sym_has_value(sym) ||
921 						 !sym_is_changeable(sym)) ? "" :
922 						" (NEW)");
923 				goto conf_childs;
924 			}
925 		}
926 		item_add_str("%*c%s%s", indent + 1, ' ',
927 				menu_get_prompt(menu),
928 				(sym_has_value(sym) || !sym_is_changeable(sym)) ?
929 				"" : " (NEW)");
930 		if (menu->prompt && menu->prompt->type == P_MENU) {
931 			item_add_str("  %s", menu_is_empty(menu) ? "----" : "--->");
932 			return;
933 		}
934 	}
935 
936 conf_childs:
937 	indent += doint;
938 	for (child = menu->list; child; child = child->next)
939 		build_conf(child);
940 	indent -= doint;
941 }
942 
943 static void reset_menu(void)
944 {
945 	unpost_menu(curses_menu);
946 	clean_items();
947 }
948 
949 /* adjust the menu to show this item.
950  * prefer not to scroll the menu if possible*/
951 static void center_item(int selected_index, int *last_top_row)
952 {
953 	int toprow;
954 
955 	set_top_row(curses_menu, *last_top_row);
956 	toprow = top_row(curses_menu);
957 	if (selected_index < toprow ||
958 	    selected_index >= toprow+mwin_max_lines) {
959 		toprow = max(selected_index-mwin_max_lines/2, 0);
960 		if (toprow >= item_count(curses_menu)-mwin_max_lines)
961 			toprow = item_count(curses_menu)-mwin_max_lines;
962 		set_top_row(curses_menu, toprow);
963 	}
964 	set_current_item(curses_menu,
965 			curses_menu_items[selected_index]);
966 	*last_top_row = toprow;
967 	post_menu(curses_menu);
968 	refresh_all_windows(main_window);
969 }
970 
971 /* this function assumes reset_menu has been called before */
972 static void show_menu(const char *prompt, const char *instructions,
973 		int selected_index, int *last_top_row)
974 {
975 	int maxx, maxy;
976 	WINDOW *menu_window;
977 
978 	current_instructions = instructions;
979 
980 	clear();
981 	print_in_middle(stdscr, 1, getmaxx(stdscr),
982 			menu_backtitle,
983 			attr_main_heading);
984 
985 	wattrset(main_window, attr_main_menu_box);
986 	box(main_window, 0, 0);
987 	wattrset(main_window, attr_main_menu_heading);
988 	mvwprintw(main_window, 0, 3, " %s ", prompt);
989 	wattrset(main_window, attr_normal);
990 
991 	set_menu_items(curses_menu, curses_menu_items);
992 
993 	/* position the menu at the middle of the screen */
994 	scale_menu(curses_menu, &maxy, &maxx);
995 	maxx = min(maxx, mwin_max_cols-2);
996 	maxy = mwin_max_lines;
997 	menu_window = derwin(main_window,
998 			maxy,
999 			maxx,
1000 			2,
1001 			(mwin_max_cols-maxx)/2);
1002 	keypad(menu_window, TRUE);
1003 	set_menu_win(curses_menu, menu_window);
1004 	set_menu_sub(curses_menu, menu_window);
1005 
1006 	/* must reassert this after changing items, otherwise returns to a
1007 	 * default of 16
1008 	 */
1009 	set_menu_format(curses_menu, maxy, 1);
1010 	center_item(selected_index, last_top_row);
1011 	set_menu_format(curses_menu, maxy, 1);
1012 
1013 	print_function_line();
1014 
1015 	/* Post the menu */
1016 	post_menu(curses_menu);
1017 	refresh_all_windows(main_window);
1018 }
1019 
1020 static void adj_match_dir(match_f *match_direction)
1021 {
1022 	if (*match_direction == FIND_NEXT_MATCH_DOWN)
1023 		*match_direction =
1024 			MATCH_TINKER_PATTERN_DOWN;
1025 	else if (*match_direction == FIND_NEXT_MATCH_UP)
1026 		*match_direction =
1027 			MATCH_TINKER_PATTERN_UP;
1028 	/* else, do no change.. */
1029 }
1030 
1031 struct match_state
1032 {
1033 	int in_search;
1034 	match_f match_direction;
1035 	char pattern[256];
1036 };
1037 
1038 /* Return 0 means I have handled the key. In such a case, ans should hold the
1039  * item to center, or -1 otherwise.
1040  * Else return -1 .
1041  */
1042 static int do_match(int key, struct match_state *state, int *ans)
1043 {
1044 	char c = (char) key;
1045 	int terminate_search = 0;
1046 	*ans = -1;
1047 	if (key == '/' || (state->in_search && key == 27)) {
1048 		move(0, 0);
1049 		refresh();
1050 		clrtoeol();
1051 		state->in_search = 1-state->in_search;
1052 		bzero(state->pattern, sizeof(state->pattern));
1053 		state->match_direction = MATCH_TINKER_PATTERN_DOWN;
1054 		return 0;
1055 	} else if (!state->in_search)
1056 		return 1;
1057 
1058 	if (isalnum(c) || isgraph(c) || c == ' ') {
1059 		state->pattern[strlen(state->pattern)] = c;
1060 		state->pattern[strlen(state->pattern)] = '\0';
1061 		adj_match_dir(&state->match_direction);
1062 		*ans = get_mext_match(state->pattern,
1063 				state->match_direction);
1064 	} else if (key == KEY_DOWN) {
1065 		state->match_direction = FIND_NEXT_MATCH_DOWN;
1066 		*ans = get_mext_match(state->pattern,
1067 				state->match_direction);
1068 	} else if (key == KEY_UP) {
1069 		state->match_direction = FIND_NEXT_MATCH_UP;
1070 		*ans = get_mext_match(state->pattern,
1071 				state->match_direction);
1072 	} else if (key == KEY_BACKSPACE || key == 8 || key == 127) {
1073 		state->pattern[strlen(state->pattern)-1] = '\0';
1074 		adj_match_dir(&state->match_direction);
1075 	} else
1076 		terminate_search = 1;
1077 
1078 	if (terminate_search) {
1079 		state->in_search = 0;
1080 		bzero(state->pattern, sizeof(state->pattern));
1081 		move(0, 0);
1082 		refresh();
1083 		clrtoeol();
1084 		return -1;
1085 	}
1086 	return 0;
1087 }
1088 
1089 static void conf(struct menu *menu)
1090 {
1091 	selected_conf(menu, NULL);
1092 }
1093 
1094 static void selected_conf(struct menu *menu, struct menu *active_menu)
1095 {
1096 	struct menu *submenu = NULL;
1097 	struct symbol *sym;
1098 	int i, res;
1099 	int current_index = 0;
1100 	int last_top_row = 0;
1101 	struct match_state match_state = {
1102 		.in_search = 0,
1103 		.match_direction = MATCH_TINKER_PATTERN_DOWN,
1104 		.pattern = "",
1105 	};
1106 
1107 	while (!global_exit) {
1108 		reset_menu();
1109 		current_menu = menu;
1110 		build_conf(menu);
1111 		if (!child_count)
1112 			break;
1113 
1114 		if (active_menu != NULL) {
1115 			for (i = 0; i < items_num; i++) {
1116 				struct mitem *mcur;
1117 
1118 				mcur = (struct mitem *) item_userptr(curses_menu_items[i]);
1119 				if ((struct menu *) mcur->usrptr == active_menu) {
1120 					current_index = i;
1121 					break;
1122 				}
1123 			}
1124 			active_menu = NULL;
1125 		}
1126 
1127 		show_menu(menu_get_prompt(menu), menu_instructions,
1128 			  current_index, &last_top_row);
1129 		keypad((menu_win(curses_menu)), TRUE);
1130 		while (!global_exit) {
1131 			if (match_state.in_search) {
1132 				mvprintw(0, 0,
1133 					"searching: %s", match_state.pattern);
1134 				clrtoeol();
1135 			}
1136 			refresh_all_windows(main_window);
1137 			res = wgetch(menu_win(curses_menu));
1138 			if (!res)
1139 				break;
1140 			if (do_match(res, &match_state, &current_index) == 0) {
1141 				if (current_index != -1)
1142 					center_item(current_index,
1143 						    &last_top_row);
1144 				continue;
1145 			}
1146 			if (process_special_keys(&res,
1147 						(struct menu *) item_data()))
1148 				break;
1149 			switch (res) {
1150 			case KEY_DOWN:
1151 			case 'j':
1152 				menu_driver(curses_menu, REQ_DOWN_ITEM);
1153 				break;
1154 			case KEY_UP:
1155 			case 'k':
1156 				menu_driver(curses_menu, REQ_UP_ITEM);
1157 				break;
1158 			case KEY_NPAGE:
1159 				menu_driver(curses_menu, REQ_SCR_DPAGE);
1160 				break;
1161 			case KEY_PPAGE:
1162 				menu_driver(curses_menu, REQ_SCR_UPAGE);
1163 				break;
1164 			case KEY_HOME:
1165 				menu_driver(curses_menu, REQ_FIRST_ITEM);
1166 				break;
1167 			case KEY_END:
1168 				menu_driver(curses_menu, REQ_LAST_ITEM);
1169 				break;
1170 			case 'h':
1171 			case '?':
1172 				show_help((struct menu *) item_data());
1173 				break;
1174 			}
1175 			if (res == 10 || res == 27 ||
1176 				res == 32 || res == 'n' || res == 'y' ||
1177 				res == KEY_LEFT || res == KEY_RIGHT ||
1178 				res == 'm')
1179 				break;
1180 			refresh_all_windows(main_window);
1181 		}
1182 
1183 		refresh_all_windows(main_window);
1184 		/* if ESC or left*/
1185 		if (res == 27 || (menu != &rootmenu && res == KEY_LEFT))
1186 			break;
1187 
1188 		/* remember location in the menu */
1189 		last_top_row = top_row(curses_menu);
1190 		current_index = curses_item_index();
1191 
1192 		if (!item_tag())
1193 			continue;
1194 
1195 		submenu = (struct menu *) item_data();
1196 		if (!submenu || !menu_is_visible(submenu))
1197 			continue;
1198 		sym = submenu->sym;
1199 
1200 		switch (res) {
1201 		case ' ':
1202 			if (item_is_tag('t'))
1203 				sym_toggle_tristate_value(sym);
1204 			else if (item_is_tag('m'))
1205 				conf(submenu);
1206 			break;
1207 		case KEY_RIGHT:
1208 		case 10: /* ENTER WAS PRESSED */
1209 			switch (item_tag()) {
1210 			case 'm':
1211 				if (single_menu_mode)
1212 					submenu->data =
1213 						(void *) (long) !submenu->data;
1214 				else
1215 					conf(submenu);
1216 				break;
1217 			case 't':
1218 				if (sym_is_choice(sym) &&
1219 				    sym_get_tristate_value(sym) == yes)
1220 					conf_choice(submenu);
1221 				else if (submenu->prompt &&
1222 					 submenu->prompt->type == P_MENU)
1223 					conf(submenu);
1224 				else if (res == 10)
1225 					sym_toggle_tristate_value(sym);
1226 				break;
1227 			case 's':
1228 				conf_string(submenu);
1229 				break;
1230 			}
1231 			break;
1232 		case 'y':
1233 			if (item_is_tag('t')) {
1234 				if (sym_set_tristate_value(sym, yes))
1235 					break;
1236 				if (sym_set_tristate_value(sym, mod))
1237 					btn_dialog(main_window, setmod_text, 0);
1238 			}
1239 			break;
1240 		case 'n':
1241 			if (item_is_tag('t'))
1242 				sym_set_tristate_value(sym, no);
1243 			break;
1244 		case 'm':
1245 			if (item_is_tag('t'))
1246 				sym_set_tristate_value(sym, mod);
1247 			break;
1248 		}
1249 	}
1250 }
1251 
1252 static void conf_message_callback(const char *s)
1253 {
1254 	btn_dialog(main_window, s, 1, "<OK>");
1255 }
1256 
1257 static void show_help(struct menu *menu)
1258 {
1259 	struct gstr help;
1260 
1261 	if (!menu)
1262 		return;
1263 
1264 	help = str_new();
1265 	menu_get_ext_help(menu, &help);
1266 	show_scroll_win(main_window, menu_get_prompt(menu), str_get(&help));
1267 	str_free(&help);
1268 }
1269 
1270 static void conf_choice(struct menu *menu)
1271 {
1272 	const char *prompt = menu_get_prompt(menu);
1273 	struct menu *child = NULL;
1274 	struct symbol *active;
1275 	int selected_index = 0;
1276 	int last_top_row = 0;
1277 	int res, i = 0;
1278 	struct match_state match_state = {
1279 		.in_search = 0,
1280 		.match_direction = MATCH_TINKER_PATTERN_DOWN,
1281 		.pattern = "",
1282 	};
1283 
1284 	active = sym_get_choice_value(menu->sym);
1285 	/* this is mostly duplicated from the conf() function. */
1286 	while (!global_exit) {
1287 		reset_menu();
1288 
1289 		for (i = 0, child = menu->list; child; child = child->next) {
1290 			if (!show_all_items && !menu_is_visible(child))
1291 				continue;
1292 
1293 			if (child->sym == sym_get_choice_value(menu->sym))
1294 				item_make(child, ':', "<X> %s",
1295 						menu_get_prompt(child));
1296 			else if (child->sym)
1297 				item_make(child, ':', "    %s",
1298 						menu_get_prompt(child));
1299 			else
1300 				item_make(child, ':', "*** %s ***",
1301 						menu_get_prompt(child));
1302 
1303 			if (child->sym == active){
1304 				last_top_row = top_row(curses_menu);
1305 				selected_index = i;
1306 			}
1307 			i++;
1308 		}
1309 		show_menu(prompt ? prompt : "Choice Menu",
1310 				radiolist_instructions,
1311 				selected_index,
1312 				&last_top_row);
1313 		while (!global_exit) {
1314 			if (match_state.in_search) {
1315 				mvprintw(0, 0, "searching: %s",
1316 					 match_state.pattern);
1317 				clrtoeol();
1318 			}
1319 			refresh_all_windows(main_window);
1320 			res = wgetch(menu_win(curses_menu));
1321 			if (!res)
1322 				break;
1323 			if (do_match(res, &match_state, &selected_index) == 0) {
1324 				if (selected_index != -1)
1325 					center_item(selected_index,
1326 						    &last_top_row);
1327 				continue;
1328 			}
1329 			if (process_special_keys(
1330 						&res,
1331 						(struct menu *) item_data()))
1332 				break;
1333 			switch (res) {
1334 			case KEY_DOWN:
1335 			case 'j':
1336 				menu_driver(curses_menu, REQ_DOWN_ITEM);
1337 				break;
1338 			case KEY_UP:
1339 			case 'k':
1340 				menu_driver(curses_menu, REQ_UP_ITEM);
1341 				break;
1342 			case KEY_NPAGE:
1343 				menu_driver(curses_menu, REQ_SCR_DPAGE);
1344 				break;
1345 			case KEY_PPAGE:
1346 				menu_driver(curses_menu, REQ_SCR_UPAGE);
1347 				break;
1348 			case KEY_HOME:
1349 				menu_driver(curses_menu, REQ_FIRST_ITEM);
1350 				break;
1351 			case KEY_END:
1352 				menu_driver(curses_menu, REQ_LAST_ITEM);
1353 				break;
1354 			case 'h':
1355 			case '?':
1356 				show_help((struct menu *) item_data());
1357 				break;
1358 			}
1359 			if (res == 10 || res == 27 || res == ' ' ||
1360 					res == KEY_LEFT){
1361 				break;
1362 			}
1363 			refresh_all_windows(main_window);
1364 		}
1365 		/* if ESC or left */
1366 		if (res == 27 || res == KEY_LEFT)
1367 			break;
1368 
1369 		child = item_data();
1370 		if (!child || !menu_is_visible(child) || !child->sym)
1371 			continue;
1372 		switch (res) {
1373 		case ' ':
1374 		case  10:
1375 		case KEY_RIGHT:
1376 			sym_set_tristate_value(child->sym, yes);
1377 			return;
1378 		case 'h':
1379 		case '?':
1380 			show_help(child);
1381 			active = child->sym;
1382 			break;
1383 		case KEY_EXIT:
1384 			return;
1385 		}
1386 	}
1387 }
1388 
1389 static void conf_string(struct menu *menu)
1390 {
1391 	const char *prompt = menu_get_prompt(menu);
1392 
1393 	while (1) {
1394 		int res;
1395 		const char *heading;
1396 
1397 		switch (sym_get_type(menu->sym)) {
1398 		case S_INT:
1399 			heading = inputbox_instructions_int;
1400 			break;
1401 		case S_HEX:
1402 			heading = inputbox_instructions_hex;
1403 			break;
1404 		case S_STRING:
1405 			heading = inputbox_instructions_string;
1406 			break;
1407 		default:
1408 			heading = "Internal nconf error!";
1409 		}
1410 		res = dialog_inputbox(main_window,
1411 				prompt ? prompt : "Main Menu",
1412 				heading,
1413 				sym_get_string_value(menu->sym),
1414 				&dialog_input_result,
1415 				&dialog_input_result_len);
1416 		switch (res) {
1417 		case 0:
1418 			if (sym_set_string_value(menu->sym,
1419 						dialog_input_result))
1420 				return;
1421 			btn_dialog(main_window,
1422 				"You have made an invalid entry.", 0);
1423 			break;
1424 		case 1:
1425 			show_help(menu);
1426 			break;
1427 		case KEY_EXIT:
1428 			return;
1429 		}
1430 	}
1431 }
1432 
1433 static void conf_load(void)
1434 {
1435 	while (1) {
1436 		int res;
1437 		res = dialog_inputbox(main_window,
1438 				NULL, load_config_text,
1439 				filename,
1440 				&dialog_input_result,
1441 				&dialog_input_result_len);
1442 		switch (res) {
1443 		case 0:
1444 			if (!dialog_input_result[0])
1445 				return;
1446 			if (!conf_read(dialog_input_result)) {
1447 				set_config_filename(dialog_input_result);
1448 				conf_set_changed(true);
1449 				return;
1450 			}
1451 			btn_dialog(main_window, "File does not exist!", 0);
1452 			break;
1453 		case 1:
1454 			show_scroll_win(main_window,
1455 					"Load Alternate Configuration",
1456 					load_config_help);
1457 			break;
1458 		case KEY_EXIT:
1459 			return;
1460 		}
1461 	}
1462 }
1463 
1464 static void conf_save(void)
1465 {
1466 	while (1) {
1467 		int res;
1468 		res = dialog_inputbox(main_window,
1469 				NULL, save_config_text,
1470 				filename,
1471 				&dialog_input_result,
1472 				&dialog_input_result_len);
1473 		switch (res) {
1474 		case 0:
1475 			if (!dialog_input_result[0])
1476 				return;
1477 			res = conf_write(dialog_input_result);
1478 			if (!res) {
1479 				set_config_filename(dialog_input_result);
1480 				return;
1481 			}
1482 			btn_dialog(main_window, "Can't create file!",
1483 				1, "<OK>");
1484 			break;
1485 		case 1:
1486 			show_scroll_win(main_window,
1487 				"Save Alternate Configuration",
1488 				save_config_help);
1489 			break;
1490 		case KEY_EXIT:
1491 			return;
1492 		}
1493 	}
1494 }
1495 
1496 static void setup_windows(void)
1497 {
1498 	int lines, columns;
1499 
1500 	getmaxyx(stdscr, lines, columns);
1501 
1502 	if (main_window != NULL)
1503 		delwin(main_window);
1504 
1505 	/* set up the menu and menu window */
1506 	main_window = newwin(lines-2, columns-2, 2, 1);
1507 	keypad(main_window, TRUE);
1508 	mwin_max_lines = lines-7;
1509 	mwin_max_cols = columns-6;
1510 
1511 	/* panels order is from bottom to top */
1512 	new_panel(main_window);
1513 }
1514 
1515 int main(int ac, char **av)
1516 {
1517 	int lines, columns;
1518 	char *mode;
1519 
1520 	if (ac > 1 && strcmp(av[1], "-s") == 0) {
1521 		/* Silence conf_read() until the real callback is set up */
1522 		conf_set_message_callback(NULL);
1523 		av++;
1524 	}
1525 	conf_parse(av[1]);
1526 	conf_read(NULL);
1527 
1528 	mode = getenv("NCONFIG_MODE");
1529 	if (mode) {
1530 		if (!strcasecmp(mode, "single_menu"))
1531 			single_menu_mode = 1;
1532 	}
1533 
1534 	/* Initialize curses */
1535 	initscr();
1536 	/* set color theme */
1537 	set_colors();
1538 
1539 	cbreak();
1540 	noecho();
1541 	keypad(stdscr, TRUE);
1542 	curs_set(0);
1543 
1544 	getmaxyx(stdscr, lines, columns);
1545 	if (columns < 75 || lines < 20) {
1546 		endwin();
1547 		printf("Your terminal should have at "
1548 			"least 20 lines and 75 columns\n");
1549 		return 1;
1550 	}
1551 
1552 	notimeout(stdscr, FALSE);
1553 #if NCURSES_REENTRANT
1554 	set_escdelay(1);
1555 #else
1556 	ESCDELAY = 1;
1557 #endif
1558 
1559 	/* set btns menu */
1560 	curses_menu = new_menu(curses_menu_items);
1561 	menu_opts_off(curses_menu, O_SHOWDESC);
1562 	menu_opts_on(curses_menu, O_SHOWMATCH);
1563 	menu_opts_on(curses_menu, O_ONEVALUE);
1564 	menu_opts_on(curses_menu, O_NONCYCLIC);
1565 	menu_opts_on(curses_menu, O_IGNORECASE);
1566 	set_menu_mark(curses_menu, " ");
1567 	set_menu_fore(curses_menu, attr_main_menu_fore);
1568 	set_menu_back(curses_menu, attr_main_menu_back);
1569 	set_menu_grey(curses_menu, attr_main_menu_grey);
1570 
1571 	set_config_filename(conf_get_configname());
1572 	setup_windows();
1573 
1574 	/* check for KEY_FUNC(1) */
1575 	if (has_key(KEY_F(1)) == FALSE) {
1576 		show_scroll_win(main_window,
1577 				"Instructions",
1578 				menu_no_f_instructions);
1579 	}
1580 
1581 	conf_set_message_callback(conf_message_callback);
1582 	/* do the work */
1583 	while (!global_exit) {
1584 		conf(&rootmenu);
1585 		if (!global_exit && do_exit() == 0)
1586 			break;
1587 	}
1588 	/* ok, we are done */
1589 	unpost_menu(curses_menu);
1590 	free_menu(curses_menu);
1591 	delwin(main_window);
1592 	clear();
1593 	refresh();
1594 	endwin();
1595 	return 0;
1596 }
1597