xref: /openbmc/linux/scripts/kconfig/nconf.c (revision 8bd1369b)
1 /*
2  * Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com?
3  * Released under the terms of the GNU GPL v2.0.
4  *
5  * Derived from menuconfig.
6  *
7  */
8 #ifndef _GNU_SOURCE
9 #define _GNU_SOURCE
10 #endif
11 #include <string.h>
12 #include <stdlib.h>
13 
14 #include "lkc.h"
15 #include "nconf.h"
16 #include <ctype.h>
17 
18 static const char nconf_global_help[] =
19 "Help windows\n"
20 "------------\n"
21 "o  Global help:  Unless in a data entry window, pressing <F1> will give \n"
22 "   you the global help window, which you are just reading.\n"
23 "\n"
24 "o  A short version of the global help is available by pressing <F3>.\n"
25 "\n"
26 "o  Local help:  To get help related to the current menu entry, use any\n"
27 "   of <?> <h>, or if in a data entry window then press <F1>.\n"
28 "\n"
29 "\n"
30 "Menu entries\n"
31 "------------\n"
32 "This interface lets you select features and parameters for the kernel\n"
33 "build.  Kernel features can either be built-in, modularized, or removed.\n"
34 "Parameters must be entered as text or decimal or hexadecimal numbers.\n"
35 "\n"
36 "Menu entries beginning with following braces represent features that\n"
37 "  [ ]  can be built in or removed\n"
38 "  < >  can be built in, modularized or removed\n"
39 "  { }  can be built in or modularized, are selected by another feature\n"
40 "  - -  are selected by another feature\n"
41 "  XXX  cannot be selected.  Symbol Info <F2> tells you why.\n"
42 "*, M or whitespace inside braces means to build in, build as a module\n"
43 "or to exclude the feature respectively.\n"
44 "\n"
45 "To change any of these features, highlight it with the movement keys\n"
46 "listed below and press <y> to build it in, <m> to make it a module or\n"
47 "<n> to remove it.  You may press the <Space> key to cycle through the\n"
48 "available options.\n"
49 "\n"
50 "A trailing \"--->\" designates a submenu, a trailing \"----\" an\n"
51 "empty submenu.\n"
52 "\n"
53 "Menu navigation keys\n"
54 "----------------------------------------------------------------------\n"
55 "Linewise up                 <Up>\n"
56 "Linewise down               <Down>\n"
57 "Pagewise up                 <Page Up>\n"
58 "Pagewise down               <Page Down>\n"
59 "First entry                 <Home>\n"
60 "Last entry                  <End>\n"
61 "Enter a submenu             <Right>  <Enter>\n"
62 "Go back to parent menu      <Left>   <Esc>  <F5>\n"
63 "Close a help window         <Enter>  <Esc>  <F5>\n"
64 "Close entry window, apply   <Enter>\n"
65 "Close entry window, forget  <Esc>  <F5>\n"
66 "Start incremental, case-insensitive search for STRING in menu entries,\n"
67 "    no regex support, STRING is displayed in upper left corner\n"
68 "                            </>STRING\n"
69 "    Remove last character   <Backspace>\n"
70 "    Jump to next hit        <Down>\n"
71 "    Jump to previous hit    <Up>\n"
72 "Exit menu search mode       </>  <Esc>\n"
73 "Search for configuration variables with or without leading CONFIG_\n"
74 "                            <F8>RegExpr<Enter>\n"
75 "Verbose search help         <F8><F1>\n"
76 "----------------------------------------------------------------------\n"
77 "\n"
78 "Unless in a data entry window, key <1> may be used instead of <F1>,\n"
79 "<2> instead of <F2>, etc.\n"
80 "\n"
81 "\n"
82 "Radiolist (Choice list)\n"
83 "-----------------------\n"
84 "Use the movement keys listed above to select the option you wish to set\n"
85 "and press <Space>.\n"
86 "\n"
87 "\n"
88 "Data entry\n"
89 "----------\n"
90 "Enter the requested information and press <Enter>.  Hexadecimal values\n"
91 "may be entered without the \"0x\" prefix.\n"
92 "\n"
93 "\n"
94 "Text Box (Help Window)\n"
95 "----------------------\n"
96 "Use movement keys as listed in table above.\n"
97 "\n"
98 "Press any of <Enter> <Esc> <q> <F5> <F9> to exit.\n"
99 "\n"
100 "\n"
101 "Alternate configuration files\n"
102 "-----------------------------\n"
103 "nconfig supports switching between different configurations.\n"
104 "Press <F6> to save your current configuration.  Press <F7> and enter\n"
105 "a file name to load a previously saved configuration.\n"
106 "\n"
107 "\n"
108 "Terminal configuration\n"
109 "----------------------\n"
110 "If you use nconfig in a xterm window, make sure your TERM environment\n"
111 "variable specifies a terminal configuration which supports at least\n"
112 "16 colors.  Otherwise nconfig will look rather bad.\n"
113 "\n"
114 "If the \"stty size\" command reports the current terminalsize correctly,\n"
115 "nconfig will adapt to sizes larger than the traditional 80x25 \"standard\"\n"
116 "and display longer menus properly.\n"
117 "\n"
118 "\n"
119 "Single menu mode\n"
120 "----------------\n"
121 "If you prefer to have all of the menu entries listed in a single menu,\n"
122 "rather than the default multimenu hierarchy, run nconfig with\n"
123 "NCONFIG_MODE environment variable set to single_menu.  Example:\n"
124 "\n"
125 "make NCONFIG_MODE=single_menu nconfig\n"
126 "\n"
127 "<Enter> will then unfold the appropriate category, or fold it if it\n"
128 "is already unfolded.  Folded menu entries will be designated by a\n"
129 "leading \"++>\" and unfolded entries by a leading \"-->\".\n"
130 "\n"
131 "Note that this mode can eventually be a little more CPU expensive than\n"
132 "the default mode, especially with a larger number of unfolded submenus.\n"
133 "\n",
134 menu_no_f_instructions[] =
135 "Legend:  [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
136 "Submenus are designated by a trailing \"--->\", empty ones by \"----\".\n"
137 "\n"
138 "Use the following keys to navigate the menus:\n"
139 "Move up or down with <Up> and <Down>.\n"
140 "Enter a submenu with <Enter> or <Right>.\n"
141 "Exit a submenu to its parent menu with <Esc> or <Left>.\n"
142 "Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
143 "Pressing <Space> cycles through the available options.\n"
144 "To search for menu entries press </>.\n"
145 "<Esc> always leaves the current window.\n"
146 "\n"
147 "You do not have function keys support.\n"
148 "Press <1> instead of <F1>, <2> instead of <F2>, etc.\n"
149 "For verbose global help use key <1>.\n"
150 "For help related to the current menu entry press <?> or <h>.\n",
151 menu_instructions[] =
152 "Legend:  [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
153 "Submenus are designated by a trailing \"--->\", empty ones by \"----\".\n"
154 "\n"
155 "Use the following keys to navigate the menus:\n"
156 "Move up or down with <Up> or <Down>.\n"
157 "Enter a submenu with <Enter> or <Right>.\n"
158 "Exit a submenu to its parent menu with <Esc> or <Left>.\n"
159 "Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
160 "Pressing <Space> cycles through the available options.\n"
161 "To search for menu entries press </>.\n"
162 "<Esc> always leaves the current window.\n"
163 "\n"
164 "Pressing <1> may be used instead of <F1>, <2> instead of <F2>, etc.\n"
165 "For verbose global help press <F1>.\n"
166 "For help related to the current menu entry press <?> or <h>.\n",
167 radiolist_instructions[] =
168 "Press <Up>, <Down>, <Home> or <End> to navigate a radiolist, select\n"
169 "with <Space>.\n"
170 "For help related to the current entry press <?> or <h>.\n"
171 "For global help press <F1>.\n",
172 inputbox_instructions_int[] =
173 "Please enter a decimal value.\n"
174 "Fractions will not be accepted.\n"
175 "Press <Enter> to apply, <Esc> to cancel.",
176 inputbox_instructions_hex[] =
177 "Please enter a hexadecimal value.\n"
178 "Press <Enter> to apply, <Esc> to cancel.",
179 inputbox_instructions_string[] =
180 "Please enter a string value.\n"
181 "Press <Enter> to apply, <Esc> to cancel.",
182 setmod_text[] =
183 "This feature depends on another feature which has been configured as a\n"
184 "module.  As a result, the current feature will be built as a module too.",
185 load_config_text[] =
186 "Enter the name of the configuration file you wish to load.\n"
187 "Accept the name shown to restore the configuration you last\n"
188 "retrieved.  Leave empty to abort.",
189 load_config_help[] =
190 "For various reasons, one may wish to keep several different\n"
191 "configurations available on a single machine.\n"
192 "\n"
193 "If you have saved a previous configuration in a file other than the\n"
194 "default one, entering its name here will allow you to load and modify\n"
195 "that configuration.\n"
196 "\n"
197 "Leave empty to abort.\n",
198 save_config_text[] =
199 "Enter a filename to which this configuration should be saved\n"
200 "as an alternate.  Leave empty to abort.",
201 save_config_help[] =
202 "For various reasons, one may wish to keep several different\n"
203 "configurations available on a single machine.\n"
204 "\n"
205 "Entering a file name here will allow you to later retrieve, modify\n"
206 "and use the current configuration as an alternate to whatever\n"
207 "configuration options you have selected at that time.\n"
208 "\n"
209 "Leave empty to abort.\n",
210 search_help[] =
211 "Search for symbols (configuration variable names CONFIG_*) and display\n"
212 "their relations.  Regular expressions are supported.\n"
213 "Example:  Search for \"^FOO\".\n"
214 "Result:\n"
215 "-----------------------------------------------------------------\n"
216 "Symbol: FOO [ = m]\n"
217 "Prompt: Foo bus is used to drive the bar HW\n"
218 "Defined at drivers/pci/Kconfig:47\n"
219 "Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
220 "Location:\n"
221 "  -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
222 "    -> PCI support (PCI [ = y])\n"
223 "      -> PCI access mode (<choice> [ = y])\n"
224 "Selects: LIBCRC32\n"
225 "Selected by: BAR\n"
226 "-----------------------------------------------------------------\n"
227 "o  The line 'Prompt:' shows the text displayed for this symbol in\n"
228 "   the menu hierarchy.\n"
229 "o  The 'Defined at' line tells at what file / line number the symbol is\n"
230 "   defined.\n"
231 "o  The 'Depends on:' line lists symbols that need to be defined for\n"
232 "   this symbol to be visible and selectable in the menu.\n"
233 "o  The 'Location:' lines tell, where in the menu structure this symbol\n"
234 "   is located.  A location followed by a [ = y] indicates that this is\n"
235 "   a selectable menu item, and the current value is displayed inside\n"
236 "   brackets.\n"
237 "o  The 'Selects:' line tells, what symbol will be automatically selected\n"
238 "   if this symbol is selected (y or m).\n"
239 "o  The 'Selected by' line tells what symbol has selected this symbol.\n"
240 "\n"
241 "Only relevant lines are shown.\n"
242 "\n\n"
243 "Search examples:\n"
244 "USB  => find all symbols containing USB\n"
245 "^USB => find all symbols starting with USB\n"
246 "USB$ => find all symbols ending with USB\n"
247 "\n";
248 
249 struct mitem {
250 	char str[256];
251 	char tag;
252 	void *usrptr;
253 	int is_visible;
254 };
255 
256 #define MAX_MENU_ITEMS 4096
257 static int show_all_items;
258 static int indent;
259 static struct menu *current_menu;
260 static int child_count;
261 static int single_menu_mode;
262 /* the window in which all information appears */
263 static WINDOW *main_window;
264 /* the largest size of the menu window */
265 static int mwin_max_lines;
266 static int mwin_max_cols;
267 /* the window in which we show option buttons */
268 static MENU *curses_menu;
269 static ITEM *curses_menu_items[MAX_MENU_ITEMS];
270 static struct mitem k_menu_items[MAX_MENU_ITEMS];
271 static int items_num;
272 static int global_exit;
273 /* the currently selected button */
274 static const char *current_instructions = menu_instructions;
275 
276 static char *dialog_input_result;
277 static int dialog_input_result_len;
278 
279 static void conf(struct menu *menu);
280 static void conf_choice(struct menu *menu);
281 static void conf_string(struct menu *menu);
282 static void conf_load(void);
283 static void conf_save(void);
284 static void show_help(struct menu *menu);
285 static int do_exit(void);
286 static void setup_windows(void);
287 static void search_conf(void);
288 
289 typedef void (*function_key_handler_t)(int *key, struct menu *menu);
290 static void handle_f1(int *key, struct menu *current_item);
291 static void handle_f2(int *key, struct menu *current_item);
292 static void handle_f3(int *key, struct menu *current_item);
293 static void handle_f4(int *key, struct menu *current_item);
294 static void handle_f5(int *key, struct menu *current_item);
295 static void handle_f6(int *key, struct menu *current_item);
296 static void handle_f7(int *key, struct menu *current_item);
297 static void handle_f8(int *key, struct menu *current_item);
298 static void handle_f9(int *key, struct menu *current_item);
299 
300 struct function_keys {
301 	const char *key_str;
302 	const char *func;
303 	function_key key;
304 	function_key_handler_t handler;
305 };
306 
307 static const int function_keys_num = 9;
308 static struct function_keys function_keys[] = {
309 	{
310 		.key_str = "F1",
311 		.func = "Help",
312 		.key = F_HELP,
313 		.handler = handle_f1,
314 	},
315 	{
316 		.key_str = "F2",
317 		.func = "SymInfo",
318 		.key = F_SYMBOL,
319 		.handler = handle_f2,
320 	},
321 	{
322 		.key_str = "F3",
323 		.func = "Help 2",
324 		.key = F_INSTS,
325 		.handler = handle_f3,
326 	},
327 	{
328 		.key_str = "F4",
329 		.func = "ShowAll",
330 		.key = F_CONF,
331 		.handler = handle_f4,
332 	},
333 	{
334 		.key_str = "F5",
335 		.func = "Back",
336 		.key = F_BACK,
337 		.handler = handle_f5,
338 	},
339 	{
340 		.key_str = "F6",
341 		.func = "Save",
342 		.key = F_SAVE,
343 		.handler = handle_f6,
344 	},
345 	{
346 		.key_str = "F7",
347 		.func = "Load",
348 		.key = F_LOAD,
349 		.handler = handle_f7,
350 	},
351 	{
352 		.key_str = "F8",
353 		.func = "SymSearch",
354 		.key = F_SEARCH,
355 		.handler = handle_f8,
356 	},
357 	{
358 		.key_str = "F9",
359 		.func = "Exit",
360 		.key = F_EXIT,
361 		.handler = handle_f9,
362 	},
363 };
364 
365 static void print_function_line(void)
366 {
367 	int i;
368 	int offset = 1;
369 	const int skip = 1;
370 	int lines = getmaxy(stdscr);
371 
372 	for (i = 0; i < function_keys_num; i++) {
373 		(void) wattrset(main_window, attributes[FUNCTION_HIGHLIGHT]);
374 		mvwprintw(main_window, lines-3, offset,
375 				"%s",
376 				function_keys[i].key_str);
377 		(void) wattrset(main_window, attributes[FUNCTION_TEXT]);
378 		offset += strlen(function_keys[i].key_str);
379 		mvwprintw(main_window, lines-3,
380 				offset, "%s",
381 				function_keys[i].func);
382 		offset += strlen(function_keys[i].func) + skip;
383 	}
384 	(void) wattrset(main_window, attributes[NORMAL]);
385 }
386 
387 /* help */
388 static void handle_f1(int *key, struct menu *current_item)
389 {
390 	show_scroll_win(main_window,
391 			"Global help", nconf_global_help);
392 	return;
393 }
394 
395 /* symbole help */
396 static void handle_f2(int *key, struct menu *current_item)
397 {
398 	show_help(current_item);
399 	return;
400 }
401 
402 /* instructions */
403 static void handle_f3(int *key, struct menu *current_item)
404 {
405 	show_scroll_win(main_window,
406 			"Short help",
407 			current_instructions);
408 	return;
409 }
410 
411 /* config */
412 static void handle_f4(int *key, struct menu *current_item)
413 {
414 	int res = btn_dialog(main_window,
415 			"Show all symbols?",
416 			2,
417 			"   <Show All>   ",
418 			"<Don't show all>");
419 	if (res == 0)
420 		show_all_items = 1;
421 	else if (res == 1)
422 		show_all_items = 0;
423 
424 	return;
425 }
426 
427 /* back */
428 static void handle_f5(int *key, struct menu *current_item)
429 {
430 	*key = KEY_LEFT;
431 	return;
432 }
433 
434 /* save */
435 static void handle_f6(int *key, struct menu *current_item)
436 {
437 	conf_save();
438 	return;
439 }
440 
441 /* load */
442 static void handle_f7(int *key, struct menu *current_item)
443 {
444 	conf_load();
445 	return;
446 }
447 
448 /* search */
449 static void handle_f8(int *key, struct menu *current_item)
450 {
451 	search_conf();
452 	return;
453 }
454 
455 /* exit */
456 static void handle_f9(int *key, struct menu *current_item)
457 {
458 	do_exit();
459 	return;
460 }
461 
462 /* return != 0 to indicate the key was handles */
463 static int process_special_keys(int *key, struct menu *menu)
464 {
465 	int i;
466 
467 	if (*key == KEY_RESIZE) {
468 		setup_windows();
469 		return 1;
470 	}
471 
472 	for (i = 0; i < function_keys_num; i++) {
473 		if (*key == KEY_F(function_keys[i].key) ||
474 		    *key == '0' + function_keys[i].key){
475 			function_keys[i].handler(key, menu);
476 			return 1;
477 		}
478 	}
479 
480 	return 0;
481 }
482 
483 static void clean_items(void)
484 {
485 	int i;
486 	for (i = 0; curses_menu_items[i]; i++)
487 		free_item(curses_menu_items[i]);
488 	bzero(curses_menu_items, sizeof(curses_menu_items));
489 	bzero(k_menu_items, sizeof(k_menu_items));
490 	items_num = 0;
491 }
492 
493 typedef enum {MATCH_TINKER_PATTERN_UP, MATCH_TINKER_PATTERN_DOWN,
494 	FIND_NEXT_MATCH_DOWN, FIND_NEXT_MATCH_UP} match_f;
495 
496 /* return the index of the matched item, or -1 if no such item exists */
497 static int get_mext_match(const char *match_str, match_f flag)
498 {
499 	int match_start = item_index(current_item(curses_menu));
500 	int index;
501 
502 	if (flag == FIND_NEXT_MATCH_DOWN)
503 		++match_start;
504 	else if (flag == FIND_NEXT_MATCH_UP)
505 		--match_start;
506 
507 	index = match_start;
508 	index = (index + items_num) % items_num;
509 	while (true) {
510 		char *str = k_menu_items[index].str;
511 		if (strcasestr(str, match_str) != NULL)
512 			return index;
513 		if (flag == FIND_NEXT_MATCH_UP ||
514 		    flag == MATCH_TINKER_PATTERN_UP)
515 			--index;
516 		else
517 			++index;
518 		index = (index + items_num) % items_num;
519 		if (index == match_start)
520 			return -1;
521 	}
522 }
523 
524 /* Make a new item. */
525 static void item_make(struct menu *menu, char tag, const char *fmt, ...)
526 {
527 	va_list ap;
528 
529 	if (items_num > MAX_MENU_ITEMS-1)
530 		return;
531 
532 	bzero(&k_menu_items[items_num], sizeof(k_menu_items[0]));
533 	k_menu_items[items_num].tag = tag;
534 	k_menu_items[items_num].usrptr = menu;
535 	if (menu != NULL)
536 		k_menu_items[items_num].is_visible =
537 			menu_is_visible(menu);
538 	else
539 		k_menu_items[items_num].is_visible = 1;
540 
541 	va_start(ap, fmt);
542 	vsnprintf(k_menu_items[items_num].str,
543 		  sizeof(k_menu_items[items_num].str),
544 		  fmt, ap);
545 	va_end(ap);
546 
547 	if (!k_menu_items[items_num].is_visible)
548 		memcpy(k_menu_items[items_num].str, "XXX", 3);
549 
550 	curses_menu_items[items_num] = new_item(
551 			k_menu_items[items_num].str,
552 			k_menu_items[items_num].str);
553 	set_item_userptr(curses_menu_items[items_num],
554 			&k_menu_items[items_num]);
555 	/*
556 	if (!k_menu_items[items_num].is_visible)
557 		item_opts_off(curses_menu_items[items_num], O_SELECTABLE);
558 	*/
559 
560 	items_num++;
561 	curses_menu_items[items_num] = NULL;
562 }
563 
564 /* very hackish. adds a string to the last item added */
565 static void item_add_str(const char *fmt, ...)
566 {
567 	va_list ap;
568 	int index = items_num-1;
569 	char new_str[256];
570 	char tmp_str[256];
571 
572 	if (index < 0)
573 		return;
574 
575 	va_start(ap, fmt);
576 	vsnprintf(new_str, sizeof(new_str), fmt, ap);
577 	va_end(ap);
578 	snprintf(tmp_str, sizeof(tmp_str), "%s%s",
579 			k_menu_items[index].str, new_str);
580 	strncpy(k_menu_items[index].str,
581 		tmp_str,
582 		sizeof(k_menu_items[index].str));
583 
584 	free_item(curses_menu_items[index]);
585 	curses_menu_items[index] = new_item(
586 			k_menu_items[index].str,
587 			k_menu_items[index].str);
588 	set_item_userptr(curses_menu_items[index],
589 			&k_menu_items[index]);
590 }
591 
592 /* get the tag of the currently selected item */
593 static char item_tag(void)
594 {
595 	ITEM *cur;
596 	struct mitem *mcur;
597 
598 	cur = current_item(curses_menu);
599 	if (cur == NULL)
600 		return 0;
601 	mcur = (struct mitem *) item_userptr(cur);
602 	return mcur->tag;
603 }
604 
605 static int curses_item_index(void)
606 {
607 	return  item_index(current_item(curses_menu));
608 }
609 
610 static void *item_data(void)
611 {
612 	ITEM *cur;
613 	struct mitem *mcur;
614 
615 	cur = current_item(curses_menu);
616 	if (!cur)
617 		return NULL;
618 	mcur = (struct mitem *) item_userptr(cur);
619 	return mcur->usrptr;
620 
621 }
622 
623 static int item_is_tag(char tag)
624 {
625 	return item_tag() == tag;
626 }
627 
628 static char filename[PATH_MAX+1];
629 static char menu_backtitle[PATH_MAX+128];
630 static const char *set_config_filename(const char *config_filename)
631 {
632 	int size;
633 
634 	size = snprintf(menu_backtitle, sizeof(menu_backtitle),
635 			"%s - %s", config_filename, rootmenu.prompt->text);
636 	if (size >= sizeof(menu_backtitle))
637 		menu_backtitle[sizeof(menu_backtitle)-1] = '\0';
638 
639 	size = snprintf(filename, sizeof(filename), "%s", config_filename);
640 	if (size >= sizeof(filename))
641 		filename[sizeof(filename)-1] = '\0';
642 	return menu_backtitle;
643 }
644 
645 /* return = 0 means we are successful.
646  * -1 means go on doing what you were doing
647  */
648 static int do_exit(void)
649 {
650 	int res;
651 	if (!conf_get_changed()) {
652 		global_exit = 1;
653 		return 0;
654 	}
655 	res = btn_dialog(main_window,
656 			"Do you wish to save your new configuration?\n"
657 				"<ESC> to cancel and resume nconfig.",
658 			2,
659 			"   <save>   ",
660 			"<don't save>");
661 	if (res == KEY_EXIT) {
662 		global_exit = 0;
663 		return -1;
664 	}
665 
666 	/* if we got here, the user really wants to exit */
667 	switch (res) {
668 	case 0:
669 		res = conf_write(filename);
670 		if (res)
671 			btn_dialog(
672 				main_window,
673 				"Error during writing of configuration.\n"
674 				  "Your configuration changes were NOT saved.",
675 				  1,
676 				  "<OK>");
677 		break;
678 	default:
679 		btn_dialog(
680 			main_window,
681 			"Your configuration changes were NOT saved.",
682 			1,
683 			"<OK>");
684 		break;
685 	}
686 	global_exit = 1;
687 	return 0;
688 }
689 
690 
691 static void search_conf(void)
692 {
693 	struct symbol **sym_arr;
694 	struct gstr res;
695 	struct gstr title;
696 	char *dialog_input;
697 	int dres;
698 
699 	title = str_new();
700 	str_printf( &title, "Enter (sub)string or regexp to search for "
701 			      "(with or without \"%s\")", CONFIG_);
702 
703 again:
704 	dres = dialog_inputbox(main_window,
705 			"Search Configuration Parameter",
706 			str_get(&title),
707 			"", &dialog_input_result, &dialog_input_result_len);
708 	switch (dres) {
709 	case 0:
710 		break;
711 	case 1:
712 		show_scroll_win(main_window,
713 				"Search Configuration", search_help);
714 		goto again;
715 	default:
716 		str_free(&title);
717 		return;
718 	}
719 
720 	/* strip the prefix if necessary */
721 	dialog_input = dialog_input_result;
722 	if (strncasecmp(dialog_input_result, CONFIG_, strlen(CONFIG_)) == 0)
723 		dialog_input += strlen(CONFIG_);
724 
725 	sym_arr = sym_re_search(dialog_input);
726 	res = get_relations_str(sym_arr, NULL);
727 	free(sym_arr);
728 	show_scroll_win(main_window,
729 			"Search Results", str_get(&res));
730 	str_free(&res);
731 	str_free(&title);
732 }
733 
734 
735 static void build_conf(struct menu *menu)
736 {
737 	struct symbol *sym;
738 	struct property *prop;
739 	struct menu *child;
740 	int type, tmp, doint = 2;
741 	tristate val;
742 	char ch;
743 
744 	if (!menu || (!show_all_items && !menu_is_visible(menu)))
745 		return;
746 
747 	sym = menu->sym;
748 	prop = menu->prompt;
749 	if (!sym) {
750 		if (prop && menu != current_menu) {
751 			const char *prompt = menu_get_prompt(menu);
752 			enum prop_type ptype;
753 			ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
754 			switch (ptype) {
755 			case P_MENU:
756 				child_count++;
757 				prompt = prompt;
758 				if (single_menu_mode) {
759 					item_make(menu, 'm',
760 						"%s%*c%s",
761 						menu->data ? "-->" : "++>",
762 						indent + 1, ' ', prompt);
763 				} else
764 					item_make(menu, 'm',
765 						  "   %*c%s  %s",
766 						  indent + 1, ' ', prompt,
767 						  menu_is_empty(menu) ? "----" : "--->");
768 
769 				if (single_menu_mode && menu->data)
770 					goto conf_childs;
771 				return;
772 			case P_COMMENT:
773 				if (prompt) {
774 					child_count++;
775 					item_make(menu, ':',
776 						"   %*c*** %s ***",
777 						indent + 1, ' ',
778 						prompt);
779 				}
780 				break;
781 			default:
782 				if (prompt) {
783 					child_count++;
784 					item_make(menu, ':', "---%*c%s",
785 						indent + 1, ' ',
786 						prompt);
787 				}
788 			}
789 		} else
790 			doint = 0;
791 		goto conf_childs;
792 	}
793 
794 	type = sym_get_type(sym);
795 	if (sym_is_choice(sym)) {
796 		struct symbol *def_sym = sym_get_choice_value(sym);
797 		struct menu *def_menu = NULL;
798 
799 		child_count++;
800 		for (child = menu->list; child; child = child->next) {
801 			if (menu_is_visible(child) && child->sym == def_sym)
802 				def_menu = child;
803 		}
804 
805 		val = sym_get_tristate_value(sym);
806 		if (sym_is_changable(sym)) {
807 			switch (type) {
808 			case S_BOOLEAN:
809 				item_make(menu, 't', "[%c]",
810 						val == no ? ' ' : '*');
811 				break;
812 			case S_TRISTATE:
813 				switch (val) {
814 				case yes:
815 					ch = '*';
816 					break;
817 				case mod:
818 					ch = 'M';
819 					break;
820 				default:
821 					ch = ' ';
822 					break;
823 				}
824 				item_make(menu, 't', "<%c>", ch);
825 				break;
826 			}
827 		} else {
828 			item_make(menu, def_menu ? 't' : ':', "   ");
829 		}
830 
831 		item_add_str("%*c%s", indent + 1,
832 				' ', menu_get_prompt(menu));
833 		if (val == yes) {
834 			if (def_menu) {
835 				item_add_str(" (%s)",
836 					menu_get_prompt(def_menu));
837 				item_add_str("  --->");
838 				if (def_menu->list) {
839 					indent += 2;
840 					build_conf(def_menu);
841 					indent -= 2;
842 				}
843 			}
844 			return;
845 		}
846 	} else {
847 		if (menu == current_menu) {
848 			item_make(menu, ':',
849 				"---%*c%s", indent + 1,
850 				' ', menu_get_prompt(menu));
851 			goto conf_childs;
852 		}
853 		child_count++;
854 		val = sym_get_tristate_value(sym);
855 		if (sym_is_choice_value(sym) && val == yes) {
856 			item_make(menu, ':', "   ");
857 		} else {
858 			switch (type) {
859 			case S_BOOLEAN:
860 				if (sym_is_changable(sym))
861 					item_make(menu, 't', "[%c]",
862 						val == no ? ' ' : '*');
863 				else
864 					item_make(menu, 't', "-%c-",
865 						val == no ? ' ' : '*');
866 				break;
867 			case S_TRISTATE:
868 				switch (val) {
869 				case yes:
870 					ch = '*';
871 					break;
872 				case mod:
873 					ch = 'M';
874 					break;
875 				default:
876 					ch = ' ';
877 					break;
878 				}
879 				if (sym_is_changable(sym)) {
880 					if (sym->rev_dep.tri == mod)
881 						item_make(menu,
882 							't', "{%c}", ch);
883 					else
884 						item_make(menu,
885 							't', "<%c>", ch);
886 				} else
887 					item_make(menu, 't', "-%c-", ch);
888 				break;
889 			default:
890 				tmp = 2 + strlen(sym_get_string_value(sym));
891 				item_make(menu, 's', "    (%s)",
892 						sym_get_string_value(sym));
893 				tmp = indent - tmp + 4;
894 				if (tmp < 0)
895 					tmp = 0;
896 				item_add_str("%*c%s%s", tmp, ' ',
897 						menu_get_prompt(menu),
898 						(sym_has_value(sym) ||
899 						 !sym_is_changable(sym)) ? "" :
900 						" (NEW)");
901 				goto conf_childs;
902 			}
903 		}
904 		item_add_str("%*c%s%s", indent + 1, ' ',
905 				menu_get_prompt(menu),
906 				(sym_has_value(sym) || !sym_is_changable(sym)) ?
907 				"" : " (NEW)");
908 		if (menu->prompt && menu->prompt->type == P_MENU) {
909 			item_add_str("  %s", menu_is_empty(menu) ? "----" : "--->");
910 			return;
911 		}
912 	}
913 
914 conf_childs:
915 	indent += doint;
916 	for (child = menu->list; child; child = child->next)
917 		build_conf(child);
918 	indent -= doint;
919 }
920 
921 static void reset_menu(void)
922 {
923 	unpost_menu(curses_menu);
924 	clean_items();
925 }
926 
927 /* adjust the menu to show this item.
928  * prefer not to scroll the menu if possible*/
929 static void center_item(int selected_index, int *last_top_row)
930 {
931 	int toprow;
932 
933 	set_top_row(curses_menu, *last_top_row);
934 	toprow = top_row(curses_menu);
935 	if (selected_index < toprow ||
936 	    selected_index >= toprow+mwin_max_lines) {
937 		toprow = max(selected_index-mwin_max_lines/2, 0);
938 		if (toprow >= item_count(curses_menu)-mwin_max_lines)
939 			toprow = item_count(curses_menu)-mwin_max_lines;
940 		set_top_row(curses_menu, toprow);
941 	}
942 	set_current_item(curses_menu,
943 			curses_menu_items[selected_index]);
944 	*last_top_row = toprow;
945 	post_menu(curses_menu);
946 	refresh_all_windows(main_window);
947 }
948 
949 /* this function assumes reset_menu has been called before */
950 static void show_menu(const char *prompt, const char *instructions,
951 		int selected_index, int *last_top_row)
952 {
953 	int maxx, maxy;
954 	WINDOW *menu_window;
955 
956 	current_instructions = instructions;
957 
958 	clear();
959 	(void) wattrset(main_window, attributes[NORMAL]);
960 	print_in_middle(stdscr, 1, 0, getmaxx(stdscr),
961 			menu_backtitle,
962 			attributes[MAIN_HEADING]);
963 
964 	(void) wattrset(main_window, attributes[MAIN_MENU_BOX]);
965 	box(main_window, 0, 0);
966 	(void) wattrset(main_window, attributes[MAIN_MENU_HEADING]);
967 	mvwprintw(main_window, 0, 3, " %s ", prompt);
968 	(void) wattrset(main_window, attributes[NORMAL]);
969 
970 	set_menu_items(curses_menu, curses_menu_items);
971 
972 	/* position the menu at the middle of the screen */
973 	scale_menu(curses_menu, &maxy, &maxx);
974 	maxx = min(maxx, mwin_max_cols-2);
975 	maxy = mwin_max_lines;
976 	menu_window = derwin(main_window,
977 			maxy,
978 			maxx,
979 			2,
980 			(mwin_max_cols-maxx)/2);
981 	keypad(menu_window, TRUE);
982 	set_menu_win(curses_menu, menu_window);
983 	set_menu_sub(curses_menu, menu_window);
984 
985 	/* must reassert this after changing items, otherwise returns to a
986 	 * default of 16
987 	 */
988 	set_menu_format(curses_menu, maxy, 1);
989 	center_item(selected_index, last_top_row);
990 	set_menu_format(curses_menu, maxy, 1);
991 
992 	print_function_line();
993 
994 	/* Post the menu */
995 	post_menu(curses_menu);
996 	refresh_all_windows(main_window);
997 }
998 
999 static void adj_match_dir(match_f *match_direction)
1000 {
1001 	if (*match_direction == FIND_NEXT_MATCH_DOWN)
1002 		*match_direction =
1003 			MATCH_TINKER_PATTERN_DOWN;
1004 	else if (*match_direction == FIND_NEXT_MATCH_UP)
1005 		*match_direction =
1006 			MATCH_TINKER_PATTERN_UP;
1007 	/* else, do no change.. */
1008 }
1009 
1010 struct match_state
1011 {
1012 	int in_search;
1013 	match_f match_direction;
1014 	char pattern[256];
1015 };
1016 
1017 /* Return 0 means I have handled the key. In such a case, ans should hold the
1018  * item to center, or -1 otherwise.
1019  * Else return -1 .
1020  */
1021 static int do_match(int key, struct match_state *state, int *ans)
1022 {
1023 	char c = (char) key;
1024 	int terminate_search = 0;
1025 	*ans = -1;
1026 	if (key == '/' || (state->in_search && key == 27)) {
1027 		move(0, 0);
1028 		refresh();
1029 		clrtoeol();
1030 		state->in_search = 1-state->in_search;
1031 		bzero(state->pattern, sizeof(state->pattern));
1032 		state->match_direction = MATCH_TINKER_PATTERN_DOWN;
1033 		return 0;
1034 	} else if (!state->in_search)
1035 		return 1;
1036 
1037 	if (isalnum(c) || isgraph(c) || c == ' ') {
1038 		state->pattern[strlen(state->pattern)] = c;
1039 		state->pattern[strlen(state->pattern)] = '\0';
1040 		adj_match_dir(&state->match_direction);
1041 		*ans = get_mext_match(state->pattern,
1042 				state->match_direction);
1043 	} else if (key == KEY_DOWN) {
1044 		state->match_direction = FIND_NEXT_MATCH_DOWN;
1045 		*ans = get_mext_match(state->pattern,
1046 				state->match_direction);
1047 	} else if (key == KEY_UP) {
1048 		state->match_direction = FIND_NEXT_MATCH_UP;
1049 		*ans = get_mext_match(state->pattern,
1050 				state->match_direction);
1051 	} else if (key == KEY_BACKSPACE || key == 127) {
1052 		state->pattern[strlen(state->pattern)-1] = '\0';
1053 		adj_match_dir(&state->match_direction);
1054 	} else
1055 		terminate_search = 1;
1056 
1057 	if (terminate_search) {
1058 		state->in_search = 0;
1059 		bzero(state->pattern, sizeof(state->pattern));
1060 		move(0, 0);
1061 		refresh();
1062 		clrtoeol();
1063 		return -1;
1064 	}
1065 	return 0;
1066 }
1067 
1068 static void conf(struct menu *menu)
1069 {
1070 	struct menu *submenu = NULL;
1071 	const char *prompt = menu_get_prompt(menu);
1072 	struct symbol *sym;
1073 	int res;
1074 	int current_index = 0;
1075 	int last_top_row = 0;
1076 	struct match_state match_state = {
1077 		.in_search = 0,
1078 		.match_direction = MATCH_TINKER_PATTERN_DOWN,
1079 		.pattern = "",
1080 	};
1081 
1082 	while (!global_exit) {
1083 		reset_menu();
1084 		current_menu = menu;
1085 		build_conf(menu);
1086 		if (!child_count)
1087 			break;
1088 
1089 		show_menu(prompt ? prompt : "Main Menu",
1090 				menu_instructions,
1091 				current_index, &last_top_row);
1092 		keypad((menu_win(curses_menu)), TRUE);
1093 		while (!global_exit) {
1094 			if (match_state.in_search) {
1095 				mvprintw(0, 0,
1096 					"searching: %s", match_state.pattern);
1097 				clrtoeol();
1098 			}
1099 			refresh_all_windows(main_window);
1100 			res = wgetch(menu_win(curses_menu));
1101 			if (!res)
1102 				break;
1103 			if (do_match(res, &match_state, &current_index) == 0) {
1104 				if (current_index != -1)
1105 					center_item(current_index,
1106 						    &last_top_row);
1107 				continue;
1108 			}
1109 			if (process_special_keys(&res,
1110 						(struct menu *) item_data()))
1111 				break;
1112 			switch (res) {
1113 			case KEY_DOWN:
1114 				menu_driver(curses_menu, REQ_DOWN_ITEM);
1115 				break;
1116 			case KEY_UP:
1117 				menu_driver(curses_menu, REQ_UP_ITEM);
1118 				break;
1119 			case KEY_NPAGE:
1120 				menu_driver(curses_menu, REQ_SCR_DPAGE);
1121 				break;
1122 			case KEY_PPAGE:
1123 				menu_driver(curses_menu, REQ_SCR_UPAGE);
1124 				break;
1125 			case KEY_HOME:
1126 				menu_driver(curses_menu, REQ_FIRST_ITEM);
1127 				break;
1128 			case KEY_END:
1129 				menu_driver(curses_menu, REQ_LAST_ITEM);
1130 				break;
1131 			case 'h':
1132 			case '?':
1133 				show_help((struct menu *) item_data());
1134 				break;
1135 			}
1136 			if (res == 10 || res == 27 ||
1137 				res == 32 || res == 'n' || res == 'y' ||
1138 				res == KEY_LEFT || res == KEY_RIGHT ||
1139 				res == 'm')
1140 				break;
1141 			refresh_all_windows(main_window);
1142 		}
1143 
1144 		refresh_all_windows(main_window);
1145 		/* if ESC or left*/
1146 		if (res == 27 || (menu != &rootmenu && res == KEY_LEFT))
1147 			break;
1148 
1149 		/* remember location in the menu */
1150 		last_top_row = top_row(curses_menu);
1151 		current_index = curses_item_index();
1152 
1153 		if (!item_tag())
1154 			continue;
1155 
1156 		submenu = (struct menu *) item_data();
1157 		if (!submenu || !menu_is_visible(submenu))
1158 			continue;
1159 		sym = submenu->sym;
1160 
1161 		switch (res) {
1162 		case ' ':
1163 			if (item_is_tag('t'))
1164 				sym_toggle_tristate_value(sym);
1165 			else if (item_is_tag('m'))
1166 				conf(submenu);
1167 			break;
1168 		case KEY_RIGHT:
1169 		case 10: /* ENTER WAS PRESSED */
1170 			switch (item_tag()) {
1171 			case 'm':
1172 				if (single_menu_mode)
1173 					submenu->data =
1174 						(void *) (long) !submenu->data;
1175 				else
1176 					conf(submenu);
1177 				break;
1178 			case 't':
1179 				if (sym_is_choice(sym) &&
1180 				    sym_get_tristate_value(sym) == yes)
1181 					conf_choice(submenu);
1182 				else if (submenu->prompt &&
1183 					 submenu->prompt->type == P_MENU)
1184 					conf(submenu);
1185 				else if (res == 10)
1186 					sym_toggle_tristate_value(sym);
1187 				break;
1188 			case 's':
1189 				conf_string(submenu);
1190 				break;
1191 			}
1192 			break;
1193 		case 'y':
1194 			if (item_is_tag('t')) {
1195 				if (sym_set_tristate_value(sym, yes))
1196 					break;
1197 				if (sym_set_tristate_value(sym, mod))
1198 					btn_dialog(main_window, setmod_text, 0);
1199 			}
1200 			break;
1201 		case 'n':
1202 			if (item_is_tag('t'))
1203 				sym_set_tristate_value(sym, no);
1204 			break;
1205 		case 'm':
1206 			if (item_is_tag('t'))
1207 				sym_set_tristate_value(sym, mod);
1208 			break;
1209 		}
1210 	}
1211 }
1212 
1213 static void conf_message_callback(const char *fmt, va_list ap)
1214 {
1215 	char buf[1024];
1216 
1217 	vsnprintf(buf, sizeof(buf), fmt, ap);
1218 	btn_dialog(main_window, buf, 1, "<OK>");
1219 }
1220 
1221 static void show_help(struct menu *menu)
1222 {
1223 	struct gstr help;
1224 
1225 	if (!menu)
1226 		return;
1227 
1228 	help = str_new();
1229 	menu_get_ext_help(menu, &help);
1230 	show_scroll_win(main_window, menu_get_prompt(menu), str_get(&help));
1231 	str_free(&help);
1232 }
1233 
1234 static void conf_choice(struct menu *menu)
1235 {
1236 	const char *prompt = menu_get_prompt(menu);
1237 	struct menu *child = NULL;
1238 	struct symbol *active;
1239 	int selected_index = 0;
1240 	int last_top_row = 0;
1241 	int res, i = 0;
1242 	struct match_state match_state = {
1243 		.in_search = 0,
1244 		.match_direction = MATCH_TINKER_PATTERN_DOWN,
1245 		.pattern = "",
1246 	};
1247 
1248 	active = sym_get_choice_value(menu->sym);
1249 	/* this is mostly duplicated from the conf() function. */
1250 	while (!global_exit) {
1251 		reset_menu();
1252 
1253 		for (i = 0, child = menu->list; child; child = child->next) {
1254 			if (!show_all_items && !menu_is_visible(child))
1255 				continue;
1256 
1257 			if (child->sym == sym_get_choice_value(menu->sym))
1258 				item_make(child, ':', "<X> %s",
1259 						menu_get_prompt(child));
1260 			else if (child->sym)
1261 				item_make(child, ':', "    %s",
1262 						menu_get_prompt(child));
1263 			else
1264 				item_make(child, ':', "*** %s ***",
1265 						menu_get_prompt(child));
1266 
1267 			if (child->sym == active){
1268 				last_top_row = top_row(curses_menu);
1269 				selected_index = i;
1270 			}
1271 			i++;
1272 		}
1273 		show_menu(prompt ? prompt : "Choice Menu",
1274 				radiolist_instructions,
1275 				selected_index,
1276 				&last_top_row);
1277 		while (!global_exit) {
1278 			if (match_state.in_search) {
1279 				mvprintw(0, 0, "searching: %s",
1280 					 match_state.pattern);
1281 				clrtoeol();
1282 			}
1283 			refresh_all_windows(main_window);
1284 			res = wgetch(menu_win(curses_menu));
1285 			if (!res)
1286 				break;
1287 			if (do_match(res, &match_state, &selected_index) == 0) {
1288 				if (selected_index != -1)
1289 					center_item(selected_index,
1290 						    &last_top_row);
1291 				continue;
1292 			}
1293 			if (process_special_keys(
1294 						&res,
1295 						(struct menu *) item_data()))
1296 				break;
1297 			switch (res) {
1298 			case KEY_DOWN:
1299 				menu_driver(curses_menu, REQ_DOWN_ITEM);
1300 				break;
1301 			case KEY_UP:
1302 				menu_driver(curses_menu, REQ_UP_ITEM);
1303 				break;
1304 			case KEY_NPAGE:
1305 				menu_driver(curses_menu, REQ_SCR_DPAGE);
1306 				break;
1307 			case KEY_PPAGE:
1308 				menu_driver(curses_menu, REQ_SCR_UPAGE);
1309 				break;
1310 			case KEY_HOME:
1311 				menu_driver(curses_menu, REQ_FIRST_ITEM);
1312 				break;
1313 			case KEY_END:
1314 				menu_driver(curses_menu, REQ_LAST_ITEM);
1315 				break;
1316 			case 'h':
1317 			case '?':
1318 				show_help((struct menu *) item_data());
1319 				break;
1320 			}
1321 			if (res == 10 || res == 27 || res == ' ' ||
1322 					res == KEY_LEFT){
1323 				break;
1324 			}
1325 			refresh_all_windows(main_window);
1326 		}
1327 		/* if ESC or left */
1328 		if (res == 27 || res == KEY_LEFT)
1329 			break;
1330 
1331 		child = item_data();
1332 		if (!child || !menu_is_visible(child) || !child->sym)
1333 			continue;
1334 		switch (res) {
1335 		case ' ':
1336 		case  10:
1337 		case KEY_RIGHT:
1338 			sym_set_tristate_value(child->sym, yes);
1339 			return;
1340 		case 'h':
1341 		case '?':
1342 			show_help(child);
1343 			active = child->sym;
1344 			break;
1345 		case KEY_EXIT:
1346 			return;
1347 		}
1348 	}
1349 }
1350 
1351 static void conf_string(struct menu *menu)
1352 {
1353 	const char *prompt = menu_get_prompt(menu);
1354 
1355 	while (1) {
1356 		int res;
1357 		const char *heading;
1358 
1359 		switch (sym_get_type(menu->sym)) {
1360 		case S_INT:
1361 			heading = inputbox_instructions_int;
1362 			break;
1363 		case S_HEX:
1364 			heading = inputbox_instructions_hex;
1365 			break;
1366 		case S_STRING:
1367 			heading = inputbox_instructions_string;
1368 			break;
1369 		default:
1370 			heading = "Internal nconf error!";
1371 		}
1372 		res = dialog_inputbox(main_window,
1373 				prompt ? prompt : "Main Menu",
1374 				heading,
1375 				sym_get_string_value(menu->sym),
1376 				&dialog_input_result,
1377 				&dialog_input_result_len);
1378 		switch (res) {
1379 		case 0:
1380 			if (sym_set_string_value(menu->sym,
1381 						dialog_input_result))
1382 				return;
1383 			btn_dialog(main_window,
1384 				"You have made an invalid entry.", 0);
1385 			break;
1386 		case 1:
1387 			show_help(menu);
1388 			break;
1389 		case KEY_EXIT:
1390 			return;
1391 		}
1392 	}
1393 }
1394 
1395 static void conf_load(void)
1396 {
1397 	while (1) {
1398 		int res;
1399 		res = dialog_inputbox(main_window,
1400 				NULL, load_config_text,
1401 				filename,
1402 				&dialog_input_result,
1403 				&dialog_input_result_len);
1404 		switch (res) {
1405 		case 0:
1406 			if (!dialog_input_result[0])
1407 				return;
1408 			if (!conf_read(dialog_input_result)) {
1409 				set_config_filename(dialog_input_result);
1410 				sym_set_change_count(1);
1411 				return;
1412 			}
1413 			btn_dialog(main_window, "File does not exist!", 0);
1414 			break;
1415 		case 1:
1416 			show_scroll_win(main_window,
1417 					"Load Alternate Configuration",
1418 					load_config_help);
1419 			break;
1420 		case KEY_EXIT:
1421 			return;
1422 		}
1423 	}
1424 }
1425 
1426 static void conf_save(void)
1427 {
1428 	while (1) {
1429 		int res;
1430 		res = dialog_inputbox(main_window,
1431 				NULL, save_config_text,
1432 				filename,
1433 				&dialog_input_result,
1434 				&dialog_input_result_len);
1435 		switch (res) {
1436 		case 0:
1437 			if (!dialog_input_result[0])
1438 				return;
1439 			res = conf_write(dialog_input_result);
1440 			if (!res) {
1441 				set_config_filename(dialog_input_result);
1442 				return;
1443 			}
1444 			btn_dialog(main_window, "Can't create file! "
1445 				"Probably a nonexistent directory.",
1446 				1, "<OK>");
1447 			break;
1448 		case 1:
1449 			show_scroll_win(main_window,
1450 				"Save Alternate Configuration",
1451 				save_config_help);
1452 			break;
1453 		case KEY_EXIT:
1454 			return;
1455 		}
1456 	}
1457 }
1458 
1459 static void setup_windows(void)
1460 {
1461 	int lines, columns;
1462 
1463 	getmaxyx(stdscr, lines, columns);
1464 
1465 	if (main_window != NULL)
1466 		delwin(main_window);
1467 
1468 	/* set up the menu and menu window */
1469 	main_window = newwin(lines-2, columns-2, 2, 1);
1470 	keypad(main_window, TRUE);
1471 	mwin_max_lines = lines-7;
1472 	mwin_max_cols = columns-6;
1473 
1474 	/* panels order is from bottom to top */
1475 	new_panel(main_window);
1476 }
1477 
1478 int main(int ac, char **av)
1479 {
1480 	int lines, columns;
1481 	char *mode;
1482 
1483 	if (ac > 1 && strcmp(av[1], "-s") == 0) {
1484 		/* Silence conf_read() until the real callback is set up */
1485 		conf_set_message_callback(NULL);
1486 		av++;
1487 	}
1488 	conf_parse(av[1]);
1489 	conf_read(NULL);
1490 
1491 	mode = getenv("NCONFIG_MODE");
1492 	if (mode) {
1493 		if (!strcasecmp(mode, "single_menu"))
1494 			single_menu_mode = 1;
1495 	}
1496 
1497 	/* Initialize curses */
1498 	initscr();
1499 	/* set color theme */
1500 	set_colors();
1501 
1502 	cbreak();
1503 	noecho();
1504 	keypad(stdscr, TRUE);
1505 	curs_set(0);
1506 
1507 	getmaxyx(stdscr, lines, columns);
1508 	if (columns < 75 || lines < 20) {
1509 		endwin();
1510 		printf("Your terminal should have at "
1511 			"least 20 lines and 75 columns\n");
1512 		return 1;
1513 	}
1514 
1515 	notimeout(stdscr, FALSE);
1516 #if NCURSES_REENTRANT
1517 	set_escdelay(1);
1518 #else
1519 	ESCDELAY = 1;
1520 #endif
1521 
1522 	/* set btns menu */
1523 	curses_menu = new_menu(curses_menu_items);
1524 	menu_opts_off(curses_menu, O_SHOWDESC);
1525 	menu_opts_on(curses_menu, O_SHOWMATCH);
1526 	menu_opts_on(curses_menu, O_ONEVALUE);
1527 	menu_opts_on(curses_menu, O_NONCYCLIC);
1528 	menu_opts_on(curses_menu, O_IGNORECASE);
1529 	set_menu_mark(curses_menu, " ");
1530 	set_menu_fore(curses_menu, attributes[MAIN_MENU_FORE]);
1531 	set_menu_back(curses_menu, attributes[MAIN_MENU_BACK]);
1532 	set_menu_grey(curses_menu, attributes[MAIN_MENU_GREY]);
1533 
1534 	set_config_filename(conf_get_configname());
1535 	setup_windows();
1536 
1537 	/* check for KEY_FUNC(1) */
1538 	if (has_key(KEY_F(1)) == FALSE) {
1539 		show_scroll_win(main_window,
1540 				"Instructions",
1541 				menu_no_f_instructions);
1542 	}
1543 
1544 	conf_set_message_callback(conf_message_callback);
1545 	/* do the work */
1546 	while (!global_exit) {
1547 		conf(&rootmenu);
1548 		if (!global_exit && do_exit() == 0)
1549 			break;
1550 	}
1551 	/* ok, we are done */
1552 	unpost_menu(curses_menu);
1553 	free_menu(curses_menu);
1554 	delwin(main_window);
1555 	clear();
1556 	refresh();
1557 	endwin();
1558 	return 0;
1559 }
1560