1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
4 *
5 * Introduced single menu mode (show all sub-menus in one large tree).
6 * 2002-11-06 Petr Baudis <pasky@ucw.cz>
7 *
8 * i18n, 2005, Arnaldo Carvalho de Melo <acme@conectiva.com.br>
9 */
10
11 #include <ctype.h>
12 #include <errno.h>
13 #include <fcntl.h>
14 #include <limits.h>
15 #include <stdarg.h>
16 #include <stdlib.h>
17 #include <string.h>
18 #include <strings.h>
19 #include <signal.h>
20 #include <unistd.h>
21
22 #include <list.h>
23 #include "lkc.h"
24 #include "lxdialog/dialog.h"
25 #include "mnconf-common.h"
26
27 static const char mconf_readme[] =
28 "Overview\n"
29 "--------\n"
30 "This interface lets you select features and parameters for the build.\n"
31 "Features can either be built-in, modularized, or ignored. Parameters\n"
32 "must be entered in as decimal or hexadecimal numbers or text.\n"
33 "\n"
34 "Menu items beginning with following braces represent features that\n"
35 " [ ] can be built in or removed\n"
36 " < > can be built in, modularized or removed\n"
37 " { } can be built in or modularized (selected by other feature)\n"
38 " - - are selected by other feature,\n"
39 "while *, M or whitespace inside braces means to build in, build as\n"
40 "a module or to exclude the feature respectively.\n"
41 "\n"
42 "To change any of these features, highlight it with the cursor\n"
43 "keys and press <Y> to build it in, <M> to make it a module or\n"
44 "<N> to remove it. You may also press the <Space Bar> to cycle\n"
45 "through the available options (i.e. Y->N->M->Y).\n"
46 "\n"
47 "Some additional keyboard hints:\n"
48 "\n"
49 "Menus\n"
50 "----------\n"
51 "o Use the Up/Down arrow keys (cursor keys) to highlight the item you\n"
52 " wish to change or the submenu you wish to select and press <Enter>.\n"
53 " Submenus are designated by \"--->\", empty ones by \"----\".\n"
54 "\n"
55 " Shortcut: Press the option's highlighted letter (hotkey).\n"
56 " Pressing a hotkey more than once will sequence\n"
57 " through all visible items which use that hotkey.\n"
58 "\n"
59 " You may also use the <PAGE UP> and <PAGE DOWN> keys to scroll\n"
60 " unseen options into view.\n"
61 "\n"
62 "o To exit a menu use the cursor keys to highlight the <Exit> button\n"
63 " and press <ENTER>.\n"
64 "\n"
65 " Shortcut: Press <ESC><ESC> or <E> or <X> if there is no hotkey\n"
66 " using those letters. You may press a single <ESC>, but\n"
67 " there is a delayed response which you may find annoying.\n"
68 "\n"
69 " Also, the <TAB> and cursor keys will cycle between <Select>,\n"
70 " <Exit>, <Help>, <Save>, and <Load>.\n"
71 "\n"
72 "o To get help with an item, use the cursor keys to highlight <Help>\n"
73 " and press <ENTER>.\n"
74 "\n"
75 " Shortcut: Press <H> or <?>.\n"
76 "\n"
77 "o To toggle the display of hidden options, press <Z>.\n"
78 "\n"
79 "\n"
80 "Radiolists (Choice lists)\n"
81 "-----------\n"
82 "o Use the cursor keys to select the option you wish to set and press\n"
83 " <S> or the <SPACE BAR>.\n"
84 "\n"
85 " Shortcut: Press the first letter of the option you wish to set then\n"
86 " press <S> or <SPACE BAR>.\n"
87 "\n"
88 "o To see available help for the item, use the cursor keys to highlight\n"
89 " <Help> and Press <ENTER>.\n"
90 "\n"
91 " Shortcut: Press <H> or <?>.\n"
92 "\n"
93 " Also, the <TAB> and cursor keys will cycle between <Select> and\n"
94 " <Help>\n"
95 "\n"
96 "\n"
97 "Data Entry\n"
98 "-----------\n"
99 "o Enter the requested information and press <ENTER>\n"
100 " If you are entering hexadecimal values, it is not necessary to\n"
101 " add the '0x' prefix to the entry.\n"
102 "\n"
103 "o For help, use the <TAB> or cursor keys to highlight the help option\n"
104 " and press <ENTER>. You can try <TAB><H> as well.\n"
105 "\n"
106 "\n"
107 "Text Box (Help Window)\n"
108 "--------\n"
109 "o Use the cursor keys to scroll up/down/left/right. The VI editor\n"
110 " keys h,j,k,l function here as do <u>, <d>, <SPACE BAR> and <B> for\n"
111 " those who are familiar with less and lynx.\n"
112 "\n"
113 "o Press <E>, <X>, <q>, <Enter> or <Esc><Esc> to exit.\n"
114 "\n"
115 "\n"
116 "Alternate Configuration Files\n"
117 "-----------------------------\n"
118 "Menuconfig supports the use of alternate configuration files for\n"
119 "those who, for various reasons, find it necessary to switch\n"
120 "between different configurations.\n"
121 "\n"
122 "The <Save> button will let you save the current configuration to\n"
123 "a file of your choosing. Use the <Load> button to load a previously\n"
124 "saved alternate configuration.\n"
125 "\n"
126 "Even if you don't use alternate configuration files, but you find\n"
127 "during a Menuconfig session that you have completely messed up your\n"
128 "settings, you may use the <Load> button to restore your previously\n"
129 "saved settings from \".config\" without restarting Menuconfig.\n"
130 "\n"
131 "Other information\n"
132 "-----------------\n"
133 "If you use Menuconfig in an XTERM window, make sure you have your\n"
134 "$TERM variable set to point to an xterm definition which supports\n"
135 "color. Otherwise, Menuconfig will look rather bad. Menuconfig will\n"
136 "not display correctly in an RXVT window because rxvt displays only one\n"
137 "intensity of color, bright.\n"
138 "\n"
139 "Menuconfig will display larger menus on screens or xterms which are\n"
140 "set to display more than the standard 25 row by 80 column geometry.\n"
141 "In order for this to work, the \"stty size\" command must be able to\n"
142 "display the screen's current row and column geometry. I STRONGLY\n"
143 "RECOMMEND that you make sure you do NOT have the shell variables\n"
144 "LINES and COLUMNS exported into your environment. Some distributions\n"
145 "export those variables via /etc/profile. Some ncurses programs can\n"
146 "become confused when those variables (LINES & COLUMNS) don't reflect\n"
147 "the true screen size.\n"
148 "\n"
149 "Optional personality available\n"
150 "------------------------------\n"
151 "If you prefer to have all of the options listed in a single menu,\n"
152 "rather than the default multimenu hierarchy, run the menuconfig with\n"
153 "MENUCONFIG_MODE environment variable set to single_menu. Example:\n"
154 "\n"
155 "make MENUCONFIG_MODE=single_menu menuconfig\n"
156 "\n"
157 "<Enter> will then unroll the appropriate category, or enfold it if it\n"
158 "is already unrolled.\n"
159 "\n"
160 "Note that this mode can eventually be a little more CPU expensive\n"
161 "(especially with a larger number of unrolled categories) than the\n"
162 "default mode.\n"
163 "\n"
164
165 "Search\n"
166 "-------\n"
167 "Pressing the forward-slash (/) anywhere brings up a search dialog box.\n"
168 "\n"
169
170 "Different color themes available\n"
171 "--------------------------------\n"
172 "It is possible to select different color themes using the variable\n"
173 "MENUCONFIG_COLOR. To select a theme use:\n"
174 "\n"
175 "make MENUCONFIG_COLOR=<theme> menuconfig\n"
176 "\n"
177 "Available themes are\n"
178 " mono => selects colors suitable for monochrome displays\n"
179 " blackbg => selects a color scheme with black background\n"
180 " classic => theme with blue background. The classic look\n"
181 " bluetitle => an LCD friendly version of classic. (default)\n"
182 "\n",
183 menu_instructions[] =
184 "Arrow keys navigate the menu. "
185 "<Enter> selects submenus ---> (or empty submenus ----). "
186 "Highlighted letters are hotkeys. "
187 "Pressing <Y> includes, <N> excludes, <M> modularizes features. "
188 "Press <Esc><Esc> to exit, <?> for Help, </> for Search. "
189 "Legend: [*] built-in [ ] excluded <M> module < > module capable",
190 radiolist_instructions[] =
191 "Use the arrow keys to navigate this window or "
192 "press the hotkey of the item you wish to select "
193 "followed by the <SPACE BAR>. "
194 "Press <?> for additional information about this option.",
195 inputbox_instructions_int[] =
196 "Please enter a decimal value. "
197 "Fractions will not be accepted. "
198 "Use the <TAB> key to move from the input field to the buttons below it.",
199 inputbox_instructions_hex[] =
200 "Please enter a hexadecimal value. "
201 "Use the <TAB> key to move from the input field to the buttons below it.",
202 inputbox_instructions_string[] =
203 "Please enter a string value. "
204 "Use the <TAB> key to move from the input field to the buttons below it.",
205 setmod_text[] =
206 "This feature depends on another which has been configured as a module.\n"
207 "As a result, this feature will be built as a module.",
208 load_config_text[] =
209 "Enter the name of the configuration file you wish to load. "
210 "Accept the name shown to restore the configuration you "
211 "last retrieved. Leave blank to abort.",
212 load_config_help[] =
213 "\n"
214 "For various reasons, one may wish to keep several different\n"
215 "configurations available on a single machine.\n"
216 "\n"
217 "If you have saved a previous configuration in a file other than the\n"
218 "default one, entering its name here will allow you to modify that\n"
219 "configuration.\n"
220 "\n"
221 "If you are uncertain, then you have probably never used alternate\n"
222 "configuration files. You should therefore leave this blank to abort.\n",
223 save_config_text[] =
224 "Enter a filename to which this configuration should be saved "
225 "as an alternate. Leave blank to abort.",
226 save_config_help[] =
227 "\n"
228 "For various reasons, one may wish to keep different configurations\n"
229 "available on a single machine.\n"
230 "\n"
231 "Entering a file name here will allow you to later retrieve, modify\n"
232 "and use the current configuration as an alternate to whatever\n"
233 "configuration options you have selected at that time.\n"
234 "\n"
235 "If you are uncertain what all this means then you should probably\n"
236 "leave this blank.\n",
237 search_help[] =
238 "\n"
239 "Search for symbols and display their relations.\n"
240 "Regular expressions are allowed.\n"
241 "Example: search for \"^FOO\"\n"
242 "Result:\n"
243 "-----------------------------------------------------------------\n"
244 "Symbol: FOO [=m]\n"
245 "Type : tristate\n"
246 "Prompt: Foo bus is used to drive the bar HW\n"
247 " Location:\n"
248 " -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
249 " -> PCI support (PCI [=y])\n"
250 "(1) -> PCI access mode (<choice> [=y])\n"
251 " Defined at drivers/pci/Kconfig:47\n"
252 " Depends on: X86_LOCAL_APIC && X86_IO_APIC\n"
253 " Selects: LIBCRC32\n"
254 " Selected by: BAR [=n]\n"
255 "-----------------------------------------------------------------\n"
256 "o The line 'Type:' shows the type of the configuration option for\n"
257 " this symbol (bool, tristate, string, ...)\n"
258 "o The line 'Prompt:' shows the text used in the menu structure for\n"
259 " this symbol\n"
260 "o The 'Defined at' line tells at what file / line number the symbol\n"
261 " is defined\n"
262 "o The 'Depends on:' line tells what symbols need to be defined for\n"
263 " this symbol to be visible in the menu (selectable)\n"
264 "o The 'Location:' lines tells where in the menu structure this symbol\n"
265 " is located\n"
266 " A location followed by a [=y] indicates that this is a\n"
267 " selectable menu item - and the current value is displayed inside\n"
268 " brackets.\n"
269 " Press the key in the (#) prefix to jump directly to that\n"
270 " location. You will be returned to the current search results\n"
271 " after exiting this new menu.\n"
272 "o The 'Selects:' line tells what symbols will be automatically\n"
273 " selected if this symbol is selected (y or m)\n"
274 "o The 'Selected by' line tells what symbol has selected this symbol\n"
275 "\n"
276 "Only relevant lines are shown.\n"
277 "\n\n"
278 "Search examples:\n"
279 "Examples: USB => find all symbols containing USB\n"
280 " ^USB => find all symbols starting with USB\n"
281 " USB$ => find all symbols ending with USB\n"
282 "\n";
283
284 static int indent;
285 static struct menu *current_menu;
286 static int child_count;
287 static int single_menu_mode;
288 static int show_all_options;
289 static int save_and_exit;
290 static int silent;
291
292 static void conf(struct menu *menu, struct menu *active_menu);
293
294 static char filename[PATH_MAX+1];
295 static void set_config_filename(const char *config_filename)
296 {
297 static char menu_backtitle[PATH_MAX+128];
298
299 snprintf(menu_backtitle, sizeof(menu_backtitle), "%s - %s",
300 config_filename, rootmenu.prompt->text);
301 set_dialog_backtitle(menu_backtitle);
302
303 snprintf(filename, sizeof(filename), "%s", config_filename);
304 }
305
306 struct subtitle_part {
307 struct list_head entries;
308 const char *text;
309 };
310 static LIST_HEAD(trail);
311
312 static struct subtitle_list *subtitles;
313 static void set_subtitle(void)
314 {
315 struct subtitle_part *sp;
316 struct subtitle_list *pos, *tmp;
317
318 for (pos = subtitles; pos != NULL; pos = tmp) {
319 tmp = pos->next;
320 free(pos);
321 }
322
323 subtitles = NULL;
324 list_for_each_entry(sp, &trail, entries) {
325 if (sp->text) {
326 if (pos) {
327 pos->next = xcalloc(1, sizeof(*pos));
328 pos = pos->next;
329 } else {
330 subtitles = pos = xcalloc(1, sizeof(*pos));
331 }
332 pos->text = sp->text;
333 }
334 }
335
336 set_dialog_subtitles(subtitles);
337 }
338
339 static void reset_subtitle(void)
340 {
341 struct subtitle_list *pos, *tmp;
342
343 for (pos = subtitles; pos != NULL; pos = tmp) {
344 tmp = pos->next;
345 free(pos);
346 }
347 subtitles = NULL;
348 set_dialog_subtitles(subtitles);
349 }
350
351 static int show_textbox_ext(const char *title, const char *text, int r, int c,
352 int *vscroll, int *hscroll,
353 int (*extra_key_cb)(int, size_t, size_t, void *),
354 void *data)
355 {
356 dialog_clear();
357 return dialog_textbox(title, text, r, c, vscroll, hscroll,
358 extra_key_cb, data);
359 }
360
361 static void show_textbox(const char *title, const char *text, int r, int c)
362 {
363 show_textbox_ext(title, text, r, c, NULL, NULL, NULL, NULL);
364 }
365
366 static void show_helptext(const char *title, const char *text)
367 {
368 show_textbox(title, text, 0, 0);
369 }
370
371 static void show_help(struct menu *menu)
372 {
373 struct gstr help = str_new();
374
375 help.max_width = getmaxx(stdscr) - 10;
376 menu_get_ext_help(menu, &help);
377
378 show_helptext(menu_get_prompt(menu), str_get(&help));
379 str_free(&help);
380 }
381
382 static void search_conf(void)
383 {
384 struct symbol **sym_arr;
385 struct gstr res;
386 struct gstr title;
387 char *dialog_input;
388 int dres, vscroll = 0, hscroll = 0;
389 bool again;
390 struct gstr sttext;
391 struct subtitle_part stpart;
392
393 title = str_new();
394 str_printf( &title, "Enter (sub)string or regexp to search for "
395 "(with or without \"%s\")", CONFIG_);
396
397 again:
398 dialog_clear();
399 dres = dialog_inputbox("Search Configuration Parameter",
400 str_get(&title),
401 10, 75, "");
402 switch (dres) {
403 case 0:
404 break;
405 case 1:
406 show_helptext("Search Configuration", search_help);
407 goto again;
408 default:
409 str_free(&title);
410 return;
411 }
412
413 /* strip the prefix if necessary */
414 dialog_input = dialog_input_result;
415 if (strncasecmp(dialog_input_result, CONFIG_, strlen(CONFIG_)) == 0)
416 dialog_input += strlen(CONFIG_);
417
418 sttext = str_new();
419 str_printf(&sttext, "Search (%s)", dialog_input_result);
420 stpart.text = str_get(&sttext);
421 list_add_tail(&stpart.entries, &trail);
422
423 sym_arr = sym_re_search(dialog_input);
424 do {
425 LIST_HEAD(head);
426 struct search_data data = {
427 .head = &head,
428 };
429 struct jump_key *pos, *tmp;
430
431 jump_key_char = 0;
432 res = get_relations_str(sym_arr, &head);
433 set_subtitle();
434 dres = show_textbox_ext("Search Results", str_get(&res), 0, 0,
435 &vscroll, &hscroll,
436 handle_search_keys, &data);
437 again = false;
438 if (dres >= '1' && dres <= '9') {
439 assert(data.target != NULL);
440 conf(data.target->parent, data.target);
441 again = true;
442 }
443 str_free(&res);
444 list_for_each_entry_safe(pos, tmp, &head, entries)
445 free(pos);
446 } while (again);
447 free(sym_arr);
448 str_free(&title);
449 list_del(trail.prev);
450 str_free(&sttext);
451 }
452
453 static void build_conf(struct menu *menu)
454 {
455 struct symbol *sym;
456 struct property *prop;
457 struct menu *child;
458 int type, tmp, doint = 2;
459 tristate val;
460 char ch;
461 bool visible;
462
463 /*
464 * note: menu_is_visible() has side effect that it will
465 * recalc the value of the symbol.
466 */
467 visible = menu_is_visible(menu);
468 if (show_all_options && !menu_has_prompt(menu))
469 return;
470 else if (!show_all_options && !visible)
471 return;
472
473 sym = menu->sym;
474 prop = menu->prompt;
475 if (!sym) {
476 if (prop && menu != current_menu) {
477 const char *prompt = menu_get_prompt(menu);
478 switch (prop->type) {
479 case P_MENU:
480 child_count++;
481 if (single_menu_mode) {
482 item_make("%s%*c%s",
483 menu->data ? "-->" : "++>",
484 indent + 1, ' ', prompt);
485 } else
486 item_make(" %*c%s %s",
487 indent + 1, ' ', prompt,
488 menu_is_empty(menu) ? "----" : "--->");
489 item_set_tag('m');
490 item_set_data(menu);
491 if (single_menu_mode && menu->data)
492 goto conf_childs;
493 return;
494 case P_COMMENT:
495 if (prompt) {
496 child_count++;
497 item_make(" %*c*** %s ***", indent + 1, ' ', prompt);
498 item_set_tag(':');
499 item_set_data(menu);
500 }
501 break;
502 default:
503 if (prompt) {
504 child_count++;
505 item_make("---%*c%s", indent + 1, ' ', prompt);
506 item_set_tag(':');
507 item_set_data(menu);
508 }
509 }
510 } else
511 doint = 0;
512 goto conf_childs;
513 }
514
515 type = sym_get_type(sym);
516 if (sym_is_choice(sym)) {
517 struct symbol *def_sym = sym_calc_choice(menu);
518 struct menu *def_menu = NULL;
519
520 child_count++;
521 for (child = menu->list; child; child = child->next) {
522 if (menu_is_visible(child) && child->sym == def_sym)
523 def_menu = child;
524 }
525
526 item_make(" ");
527 item_set_tag(def_menu ? 't' : ':');
528 item_set_data(menu);
529
530 item_add_str("%*c%s", indent + 1, ' ', menu_get_prompt(menu));
531 if (def_menu)
532 item_add_str(" (%s) --->", menu_get_prompt(def_menu));
533 return;
534 } else {
535 if (menu == current_menu) {
536 item_make("---%*c%s", indent + 1, ' ', menu_get_prompt(menu));
537 item_set_tag(':');
538 item_set_data(menu);
539 goto conf_childs;
540 }
541 child_count++;
542 val = sym_get_tristate_value(sym);
543 switch (type) {
544 case S_BOOLEAN:
545 if (sym_is_changeable(sym))
546 item_make("[%c]", val == no ? ' ' : '*');
547 else
548 item_make("-%c-", val == no ? ' ' : '*');
549 item_set_tag('t');
550 item_set_data(menu);
551 break;
552 case S_TRISTATE:
553 switch (val) {
554 case yes: ch = '*'; break;
555 case mod: ch = 'M'; break;
556 default: ch = ' '; break;
557 }
558 if (sym_is_changeable(sym)) {
559 if (sym->rev_dep.tri == mod)
560 item_make("{%c}", ch);
561 else
562 item_make("<%c>", ch);
563 } else
564 item_make("-%c-", ch);
565 item_set_tag('t');
566 item_set_data(menu);
567 break;
568 default:
569 tmp = 2 + strlen(sym_get_string_value(sym)); /* () = 2 */
570 item_make("(%s)", sym_get_string_value(sym));
571 tmp = indent - tmp + 4;
572 if (tmp < 0)
573 tmp = 0;
574 item_add_str("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
575 (sym_has_value(sym) || !sym_is_changeable(sym)) ?
576 "" : " (NEW)");
577 item_set_tag('s');
578 item_set_data(menu);
579 goto conf_childs;
580 }
581 item_add_str("%*c%s%s", indent + 1, ' ', menu_get_prompt(menu),
582 (sym_has_value(sym) || !sym_is_changeable(sym)) ?
583 "" : " (NEW)");
584 if (menu->prompt->type == P_MENU) {
585 item_add_str(" %s", menu_is_empty(menu) ? "----" : "--->");
586 return;
587 }
588 }
589
590 conf_childs:
591 indent += doint;
592 for (child = menu->list; child; child = child->next)
593 build_conf(child);
594 indent -= doint;
595 }
596
597 static void conf_choice(struct menu *menu)
598 {
599 const char *prompt = menu_get_prompt(menu);
600 struct menu *child;
601 struct symbol *active;
602
603 active = sym_calc_choice(menu);
604 while (1) {
605 int res;
606 int selected;
607 item_reset();
608
609 current_menu = menu;
610 for (child = menu->list; child; child = child->next) {
611 if (!menu_is_visible(child))
612 continue;
613 if (child->sym)
614 item_make("%s", menu_get_prompt(child));
615 else {
616 item_make("*** %s ***", menu_get_prompt(child));
617 item_set_tag(':');
618 }
619 item_set_data(child);
620 if (child->sym == active)
621 item_set_selected(1);
622 if (child->sym == sym_calc_choice(menu))
623 item_set_tag('X');
624 }
625 dialog_clear();
626 res = dialog_checklist(prompt ? prompt : "Main Menu",
627 radiolist_instructions,
628 MENUBOX_HEIGHT_MIN,
629 MENUBOX_WIDTH_MIN,
630 CHECKLIST_HEIGHT_MIN);
631 selected = item_activate_selected();
632 switch (res) {
633 case 0:
634 if (selected) {
635 child = item_data();
636 if (!child->sym)
637 break;
638
639 choice_set_value(menu, child->sym);
640 }
641 return;
642 case 1:
643 if (selected) {
644 child = item_data();
645 show_help(child);
646 active = child->sym;
647 } else
648 show_help(menu);
649 break;
650 case KEY_ESC:
651 return;
652 case -ERRDISPLAYTOOSMALL:
653 return;
654 }
655 }
656 }
657
658 static void conf_string(struct menu *menu)
659 {
660 const char *prompt = menu_get_prompt(menu);
661
662 while (1) {
663 int res;
664 const char *heading;
665
666 switch (sym_get_type(menu->sym)) {
667 case S_INT:
668 heading = inputbox_instructions_int;
669 break;
670 case S_HEX:
671 heading = inputbox_instructions_hex;
672 break;
673 case S_STRING:
674 heading = inputbox_instructions_string;
675 break;
676 default:
677 heading = "Internal mconf error!";
678 }
679 dialog_clear();
680 res = dialog_inputbox(prompt ? prompt : "Main Menu",
681 heading, 10, 75,
682 sym_get_string_value(menu->sym));
683 switch (res) {
684 case 0:
685 if (sym_set_string_value(menu->sym, dialog_input_result))
686 return;
687 show_textbox(NULL, "You have made an invalid entry.", 5, 43);
688 break;
689 case 1:
690 show_help(menu);
691 break;
692 case KEY_ESC:
693 return;
694 }
695 }
696 }
697
698 static void conf_load(void)
699 {
700
701 while (1) {
702 int res;
703 dialog_clear();
704 res = dialog_inputbox(NULL, load_config_text,
705 11, 55, filename);
706 switch(res) {
707 case 0:
708 if (!dialog_input_result[0])
709 return;
710 if (!conf_read(dialog_input_result)) {
711 set_config_filename(dialog_input_result);
712 conf_set_changed(true);
713 return;
714 }
715 show_textbox(NULL, "File does not exist!", 5, 38);
716 break;
717 case 1:
718 show_helptext("Load Alternate Configuration", load_config_help);
719 break;
720 case KEY_ESC:
721 return;
722 }
723 }
724 }
725
726 static void conf_save(void)
727 {
728 while (1) {
729 int res;
730 dialog_clear();
731 res = dialog_inputbox(NULL, save_config_text,
732 11, 55, filename);
733 switch(res) {
734 case 0:
735 if (!dialog_input_result[0])
736 return;
737 if (!conf_write(dialog_input_result)) {
738 set_config_filename(dialog_input_result);
739 return;
740 }
741 show_textbox(NULL, "Can't create file!", 5, 60);
742 break;
743 case 1:
744 show_helptext("Save Alternate Configuration", save_config_help);
745 break;
746 case KEY_ESC:
747 return;
748 }
749 }
750 }
751
752 static void conf(struct menu *menu, struct menu *active_menu)
753 {
754 struct menu *submenu;
755 const char *prompt = menu_get_prompt(menu);
756 struct subtitle_part stpart;
757 struct symbol *sym;
758 int res;
759 int s_scroll = 0;
760
761 if (menu != &rootmenu)
762 stpart.text = menu_get_prompt(menu);
763 else
764 stpart.text = NULL;
765 list_add_tail(&stpart.entries, &trail);
766
767 while (1) {
768 item_reset();
769 current_menu = menu;
770 build_conf(menu);
771 if (!child_count)
772 break;
773 set_subtitle();
774 dialog_clear();
775 res = dialog_menu(prompt ? prompt : "Main Menu",
776 menu_instructions,
777 active_menu, &s_scroll);
778 if (res == 1 || res == KEY_ESC || res == -ERRDISPLAYTOOSMALL)
779 break;
780 if (item_count() != 0) {
781 if (!item_activate_selected())
782 continue;
783 if (!item_tag())
784 continue;
785 }
786 submenu = item_data();
787 active_menu = item_data();
788 if (submenu)
789 sym = submenu->sym;
790 else
791 sym = NULL;
792
793 switch (res) {
794 case 0:
795 switch (item_tag()) {
796 case 'm':
797 if (single_menu_mode)
798 submenu->data = (void *) (long) !submenu->data;
799 else
800 conf(submenu, NULL);
801 break;
802 case 't':
803 if (sym_is_choice(sym))
804 conf_choice(submenu);
805 else if (submenu->prompt->type == P_MENU)
806 conf(submenu, NULL);
807 break;
808 case 's':
809 conf_string(submenu);
810 break;
811 }
812 break;
813 case 2:
814 if (sym)
815 show_help(submenu);
816 else {
817 reset_subtitle();
818 show_helptext("README", mconf_readme);
819 }
820 break;
821 case 3:
822 reset_subtitle();
823 conf_save();
824 break;
825 case 4:
826 reset_subtitle();
827 conf_load();
828 break;
829 case 5:
830 if (item_is_tag('t')) {
831 if (sym_set_tristate_value(sym, yes))
832 break;
833 if (sym_set_tristate_value(sym, mod))
834 show_textbox(NULL, setmod_text, 6, 74);
835 }
836 break;
837 case 6:
838 if (item_is_tag('t'))
839 sym_set_tristate_value(sym, no);
840 break;
841 case 7:
842 if (item_is_tag('t'))
843 sym_set_tristate_value(sym, mod);
844 break;
845 case 8:
846 if (item_is_tag('t'))
847 sym_toggle_tristate_value(sym);
848 else if (item_is_tag('m'))
849 conf(submenu, NULL);
850 break;
851 case 9:
852 search_conf();
853 break;
854 case 10:
855 show_all_options = !show_all_options;
856 break;
857 }
858 }
859
860 list_del(trail.prev);
861 }
862
863 static void conf_message_callback(const char *s)
864 {
865 if (save_and_exit) {
866 if (!silent)
867 printf("%s", s);
868 } else {
869 show_textbox(NULL, s, 6, 60);
870 }
871 }
872
873 static int handle_exit(void)
874 {
875 int res;
876
877 save_and_exit = 1;
878 reset_subtitle();
879 dialog_clear();
880 if (conf_get_changed())
881 res = dialog_yesno(NULL,
882 "Do you wish to save your new configuration?\n"
883 "(Press <ESC><ESC> to continue kernel configuration.)",
884 6, 60);
885 else
886 res = -1;
887
888 end_dialog(saved_x, saved_y);
889
890 switch (res) {
891 case 0:
892 if (conf_write(filename)) {
893 fprintf(stderr, "\n\n"
894 "Error while writing of the configuration.\n"
895 "Your configuration changes were NOT saved."
896 "\n\n");
897 return 1;
898 }
899 conf_write_autoconf(0);
900 /* fall through */
901 case -1:
902 if (!silent)
903 printf("\n\n"
904 "*** End of the configuration.\n"
905 "*** Execute 'make' to start the build or try 'make help'."
906 "\n\n");
907 res = 0;
908 break;
909 default:
910 if (!silent)
911 fprintf(stderr, "\n\n"
912 "Your configuration changes were NOT saved."
913 "\n\n");
914 if (res != KEY_ESC)
915 res = 0;
916 }
917
918 return res;
919 }
920
921 static void sig_handler(int signo)
922 {
923 exit(handle_exit());
924 }
925
926 int main(int ac, char **av)
927 {
928 char *mode;
929 int res;
930
931 signal(SIGINT, sig_handler);
932
933 if (ac > 1 && strcmp(av[1], "-s") == 0) {
934 silent = 1;
935 /* Silence conf_read() until the real callback is set up */
936 conf_set_message_callback(NULL);
937 av++;
938 }
939 conf_parse(av[1]);
940 conf_read(NULL);
941
942 mode = getenv("MENUCONFIG_MODE");
943 if (mode) {
944 if (!strcasecmp(mode, "single_menu"))
945 single_menu_mode = 1;
946 }
947
948 if (init_dialog(NULL)) {
949 fprintf(stderr, "Your display is too small to run Menuconfig!\n");
950 fprintf(stderr, "It must be at least 19 lines by 80 columns.\n");
951 return 1;
952 }
953
954 set_config_filename(conf_get_configname());
955 conf_set_message_callback(conf_message_callback);
956 do {
957 conf(&rootmenu, NULL);
958 res = handle_exit();
959 } while (res == KEY_ESC);
960
961 return res;
962 }
963
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