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TOMOYO Linux Cross Reference
Linux/scripts/kconfig/mconf.c

Version: ~ [ linux-5.15-rc1 ] ~ [ linux-5.14.3 ] ~ [ linux-5.13.16 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.64 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.145 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.206 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.246 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.282 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.283 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
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  1 /*
  2  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
  3  * Released under the terms of the GNU GPL v2.0.
  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 <signal.h>
 19 #include <unistd.h>
 20 
 21 #include "lkc.h"
 22 #include "lxdialog/dialog.h"
 23 
 24 static const char mconf_readme[] =
 25 "Overview\n"
 26 "--------\n"
 27 "This interface lets you select features and parameters for the build.\n"
 28 "Features can either be built-in, modularized, or ignored. Parameters\n"
 29 "must be entered in as decimal or hexadecimal numbers or text.\n"
 30 "\n"
 31 "Menu items beginning with following braces represent features that\n"
 32 "  [ ] can be built in or removed\n"
 33 "  < > can be built in, modularized or removed\n"
 34 "  { } can be built in or modularized (selected by other feature)\n"
 35 "  - - are selected by other feature,\n"
 36 "while *, M or whitespace inside braces means to build in, build as\n"
 37 "a module or to exclude the feature respectively.\n"
 38 "\n"
 39 "To change any of these features, highlight it with the cursor\n"
 40 "keys and press <Y> to build it in, <M> to make it a module or\n"
 41 "<N> to remove it.  You may also press the <Space Bar> to cycle\n"
 42 "through the available options (i.e. Y->N->M->Y).\n"
 43 "\n"
 44 "Some additional keyboard hints:\n"
 45 "\n"
 46 "Menus\n"
 47 "----------\n"
 48 "o  Use the Up/Down arrow keys (cursor keys) to highlight the item you\n"
 49 "   wish to change or the submenu you wish to select and press <Enter>.\n"
 50 "   Submenus are designated by \"--->\", empty ones by \"----\".\n"
 51 "\n"
 52 "   Shortcut: Press the option's highlighted letter (hotkey).\n"
 53 "             Pressing a hotkey more than once will sequence\n"
 54 "             through all visible items which use that hotkey.\n"
 55 "\n"
 56 "   You may also use the <PAGE UP> and <PAGE DOWN> keys to scroll\n"
 57 "   unseen options into view.\n"
 58 "\n"
 59 "o  To exit a menu use the cursor keys to highlight the <Exit> button\n"
 60 "   and press <ENTER>.\n"
 61 "\n"
 62 "   Shortcut: Press <ESC><ESC> or <E> or <X> if there is no hotkey\n"
 63 "             using those letters.  You may press a single <ESC>, but\n"
 64 "             there is a delayed response which you may find annoying.\n"
 65 "\n"
 66 "   Also, the <TAB> and cursor keys will cycle between <Select>,\n"
 67 "   <Exit>, <Help>, <Save>, and <Load>.\n"
 68 "\n"
 69 "o  To get help with an item, use the cursor keys to highlight <Help>\n"
 70 "   and press <ENTER>.\n"
 71 "\n"
 72 "   Shortcut: Press <H> or <?>.\n"
 73 "\n"
 74 "o  To toggle the display of hidden options, press <Z>.\n"
 75 "\n"
 76 "\n"
 77 "Radiolists  (Choice lists)\n"
 78 "-----------\n"
 79 "o  Use the cursor keys to select the option you wish to set and press\n"
 80 "   <S> or the <SPACE BAR>.\n"
 81 "\n"
 82 "   Shortcut: Press the first letter of the option you wish to set then\n"
 83 "             press <S> or <SPACE BAR>.\n"
 84 "\n"
 85 "o  To see available help for the item, use the cursor keys to highlight\n"
 86 "   <Help> and Press <ENTER>.\n"
 87 "\n"
 88 "   Shortcut: Press <H> or <?>.\n"
 89 "\n"
 90 "   Also, the <TAB> and cursor keys will cycle between <Select> and\n"
 91 "   <Help>\n"
 92 "\n"
 93 "\n"
 94 "Data Entry\n"
 95 "-----------\n"
 96 "o  Enter the requested information and press <ENTER>\n"
 97 "   If you are entering hexadecimal values, it is not necessary to\n"
 98 "   add the '0x' prefix to the entry.\n"
 99 "\n"
100 "o  For help, use the <TAB> or cursor keys to highlight the help option\n"
101 "   and press <ENTER>.  You can try <TAB><H> as well.\n"
102 "\n"
103 "\n"
104 "Text Box    (Help Window)\n"
105 "--------\n"
106 "o  Use the cursor keys to scroll up/down/left/right.  The VI editor\n"
107 "   keys h,j,k,l function here as do <u>, <d>, <SPACE BAR> and <B> for\n"
108 "   those who are familiar with less and lynx.\n"
109 "\n"
110 "o  Press <E>, <X>, <q>, <Enter> or <Esc><Esc> to exit.\n"
111 "\n"
112 "\n"
113 "Alternate Configuration Files\n"
114 "-----------------------------\n"
115 "Menuconfig supports the use of alternate configuration files for\n"
116 "those who, for various reasons, find it necessary to switch\n"
117 "between different configurations.\n"
118 "\n"
119 "The <Save> button will let you save the current configuration to\n"
120 "a file of your choosing.  Use the <Load> button to load a previously\n"
121 "saved alternate configuration.\n"
122 "\n"
123 "Even if you don't use alternate configuration files, but you find\n"
124 "during a Menuconfig session that you have completely messed up your\n"
125 "settings, you may use the <Load> button to restore your previously\n"
126 "saved settings from \".config\" without restarting Menuconfig.\n"
127 "\n"
128 "Other information\n"
129 "-----------------\n"
130 "If you use Menuconfig in an XTERM window, make sure you have your\n"
131 "$TERM variable set to point to an xterm definition which supports\n"
132 "color.  Otherwise, Menuconfig will look rather bad.  Menuconfig will\n"
133 "not display correctly in an RXVT window because rxvt displays only one\n"
134 "intensity of color, bright.\n"
135 "\n"
136 "Menuconfig will display larger menus on screens or xterms which are\n"
137 "set to display more than the standard 25 row by 80 column geometry.\n"
138 "In order for this to work, the \"stty size\" command must be able to\n"
139 "display the screen's current row and column geometry.  I STRONGLY\n"
140 "RECOMMEND that you make sure you do NOT have the shell variables\n"
141 "LINES and COLUMNS exported into your environment.  Some distributions\n"
142 "export those variables via /etc/profile.  Some ncurses programs can\n"
143 "become confused when those variables (LINES & COLUMNS) don't reflect\n"
144 "the true screen size.\n"
145 "\n"
146 "Optional personality available\n"
147 "------------------------------\n"
148 "If you prefer to have all of the options listed in a single menu,\n"
149 "rather than the default multimenu hierarchy, run the menuconfig with\n"
150 "MENUCONFIG_MODE environment variable set to single_menu. Example:\n"
151 "\n"
152 "make MENUCONFIG_MODE=single_menu menuconfig\n"
153 "\n"
154 "<Enter> will then unroll the appropriate category, or enfold it if it\n"
155 "is already unrolled.\n"
156 "\n"
157 "Note that this mode can eventually be a little more CPU expensive\n"
158 "(especially with a larger number of unrolled categories) than the\n"
159 "default mode.\n"
160 "\n"
161 "Different color themes available\n"
162 "--------------------------------\n"
163 "It is possible to select different color themes using the variable\n"
164 "MENUCONFIG_COLOR. To select a theme use:\n"
165 "\n"
166 "make MENUCONFIG_COLOR=<theme> menuconfig\n"
167 "\n"
168 "Available themes are\n"
169 " mono       => selects colors suitable for monochrome displays\n"
170 " blackbg    => selects a color scheme with black background\n"
171 " classic    => theme with blue background. The classic look\n"
172 " bluetitle  => an LCD friendly version of classic. (default)\n"
173 "\n",
174 menu_instructions[] =
175         "Arrow keys navigate the menu.  "
176         "<Enter> selects submenus ---> (or empty submenus ----).  "
177         "Highlighted letters are hotkeys.  "
178         "Pressing <Y> includes, <N> excludes, <M> modularizes features.  "
179         "Press <Esc><Esc> to exit, <?> for Help, </> for Search.  "
180         "Legend: [*] built-in  [ ] excluded  <M> module  < > module capable",
181 radiolist_instructions[] =
182         "Use the arrow keys to navigate this window or "
183         "press the hotkey of the item you wish to select "
184         "followed by the <SPACE BAR>. "
185         "Press <?> for additional information about this option.",
186 inputbox_instructions_int[] =
187         "Please enter a decimal value. "
188         "Fractions will not be accepted.  "
189         "Use the <TAB> key to move from the input field to the buttons below it.",
190 inputbox_instructions_hex[] =
191         "Please enter a hexadecimal value. "
192         "Use the <TAB> key to move from the input field to the buttons below it.",
193 inputbox_instructions_string[] =
194         "Please enter a string value. "
195         "Use the <TAB> key to move from the input field to the buttons below it.",
196 setmod_text[] =
197         "This feature depends on another which has been configured as a module.\n"
198         "As a result, this feature will be built as a module.",
199 load_config_text[] =
200         "Enter the name of the configuration file you wish to load.  "
201         "Accept the name shown to restore the configuration you "
202         "last retrieved.  Leave blank to abort.",
203 load_config_help[] =
204         "\n"
205         "For various reasons, one may wish to keep several different\n"
206         "configurations available on a single machine.\n"
207         "\n"
208         "If you have saved a previous configuration in a file other than the\n"
209         "default one, entering its name here will allow you to modify that\n"
210         "configuration.\n"
211         "\n"
212         "If you are uncertain, then you have probably never used alternate\n"
213         "configuration files. You should therefore leave this blank to abort.\n",
214 save_config_text[] =
215         "Enter a filename to which this configuration should be saved "
216         "as an alternate.  Leave blank to abort.",
217 save_config_help[] =
218         "\n"
219         "For various reasons, one may wish to keep different configurations\n"
220         "available on a single machine.\n"
221         "\n"
222         "Entering a file name here will allow you to later retrieve, modify\n"
223         "and use the current configuration as an alternate to whatever\n"
224         "configuration options you have selected at that time.\n"
225         "\n"
226         "If you are uncertain what all this means then you should probably\n"
227         "leave this blank.\n",
228 search_help[] =
229         "\n"
230         "Search for symbols and display their relations.\n"
231         "Regular expressions are allowed.\n"
232         "Example: search for \"^FOO\"\n"
233         "Result:\n"
234         "-----------------------------------------------------------------\n"
235         "Symbol: FOO [=m]\n"
236         "Type  : tristate\n"
237         "Prompt: Foo bus is used to drive the bar HW\n"
238         "  Location:\n"
239         "    -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
240         "      -> PCI support (PCI [=y])\n"
241         "(1)     -> PCI access mode (<choice> [=y])\n"
242         "  Defined at drivers/pci/Kconfig:47\n"
243         "  Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
244         "  Selects: LIBCRC32\n"
245         "  Selected by: BAR [=n]\n"
246         "-----------------------------------------------------------------\n"
247         "o The line 'Type:' shows the type of the configuration option for\n"
248         "  this symbol (bool, tristate, string, ...)\n"
249         "o The line 'Prompt:' shows the text used in the menu structure for\n"
250         "  this symbol\n"
251         "o The 'Defined at' line tells at what file / line number the symbol\n"
252         "  is defined\n"
253         "o The 'Depends on:' line tells what symbols need to be defined for\n"
254         "  this symbol to be visible in the menu (selectable)\n"
255         "o The 'Location:' lines tells where in the menu structure this symbol\n"
256         "  is located\n"
257         "    A location followed by a [=y] indicates that this is a\n"
258         "    selectable menu item - and the current value is displayed inside\n"
259         "    brackets.\n"
260         "    Press the key in the (#) prefix to jump directly to that\n"
261         "    location. You will be returned to the current search results\n"
262         "    after exiting this new menu.\n"
263         "o The 'Selects:' line tells what symbols will be automatically\n"
264         "  selected if this symbol is selected (y or m)\n"
265         "o The 'Selected by' line tells what symbol has selected this symbol\n"
266         "\n"
267         "Only relevant lines are shown.\n"
268         "\n\n"
269         "Search examples:\n"
270         "Examples: USB  => find all symbols containing USB\n"
271         "          ^USB => find all symbols starting with USB\n"
272         "          USB$ => find all symbols ending with USB\n"
273         "\n";
274 
275 static int indent;
276 static struct menu *current_menu;
277 static int child_count;
278 static int single_menu_mode;
279 static int show_all_options;
280 static int save_and_exit;
281 static int silent;
282 
283 static void conf(struct menu *menu, struct menu *active_menu);
284 static void conf_choice(struct menu *menu);
285 static void conf_string(struct menu *menu);
286 static void conf_load(void);
287 static void conf_save(void);
288 static int show_textbox_ext(const char *title, char *text, int r, int c,
289                             int *keys, int *vscroll, int *hscroll,
290                             update_text_fn update_text, void *data);
291 static void show_textbox(const char *title, const char *text, int r, int c);
292 static void show_helptext(const char *title, const char *text);
293 static void show_help(struct menu *menu);
294 
295 static char filename[PATH_MAX+1];
296 static void set_config_filename(const char *config_filename)
297 {
298         static char menu_backtitle[PATH_MAX+128];
299         int size;
300 
301         size = snprintf(menu_backtitle, sizeof(menu_backtitle),
302                         "%s - %s", config_filename, rootmenu.prompt->text);
303         if (size >= sizeof(menu_backtitle))
304                 menu_backtitle[sizeof(menu_backtitle)-1] = '\0';
305         set_dialog_backtitle(menu_backtitle);
306 
307         size = snprintf(filename, sizeof(filename), "%s", config_filename);
308         if (size >= sizeof(filename))
309                 filename[sizeof(filename)-1] = '\0';
310 }
311 
312 struct subtitle_part {
313         struct list_head entries;
314         const char *text;
315 };
316 static LIST_HEAD(trail);
317 
318 static struct subtitle_list *subtitles;
319 static void set_subtitle(void)
320 {
321         struct subtitle_part *sp;
322         struct subtitle_list *pos, *tmp;
323 
324         for (pos = subtitles; pos != NULL; pos = tmp) {
325                 tmp = pos->next;
326                 free(pos);
327         }
328 
329         subtitles = NULL;
330         list_for_each_entry(sp, &trail, entries) {
331                 if (sp->text) {
332                         if (pos) {
333                                 pos->next = xcalloc(1, sizeof(*pos));
334                                 pos = pos->next;
335                         } else {
336                                 subtitles = pos = xcalloc(1, sizeof(*pos));
337                         }
338                         pos->text = sp->text;
339                 }
340         }
341 
342         set_dialog_subtitles(subtitles);
343 }
344 
345 static void reset_subtitle(void)
346 {
347         struct subtitle_list *pos, *tmp;
348 
349         for (pos = subtitles; pos != NULL; pos = tmp) {
350                 tmp = pos->next;
351                 free(pos);
352         }
353         subtitles = NULL;
354         set_dialog_subtitles(subtitles);
355 }
356 
357 struct search_data {
358         struct list_head *head;
359         struct menu **targets;
360         int *keys;
361 };
362 
363 static void update_text(char *buf, size_t start, size_t end, void *_data)
364 {
365         struct search_data *data = _data;
366         struct jump_key *pos;
367         int k = 0;
368 
369         list_for_each_entry(pos, data->head, entries) {
370                 if (pos->offset >= start && pos->offset < end) {
371                         char header[4];
372 
373                         if (k < JUMP_NB) {
374                                 int key = '' + (pos->index % JUMP_NB) + 1;
375 
376                                 sprintf(header, "(%c)", key);
377                                 data->keys[k] = key;
378                                 data->targets[k] = pos->target;
379                                 k++;
380                         } else {
381                                 sprintf(header, "   ");
382                         }
383 
384                         memcpy(buf + pos->offset, header, sizeof(header) - 1);
385                 }
386         }
387         data->keys[k] = 0;
388 }
389 
390 static void search_conf(void)
391 {
392         struct symbol **sym_arr;
393         struct gstr res;
394         struct gstr title;
395         char *dialog_input;
396         int dres, vscroll = 0, hscroll = 0;
397         bool again;
398         struct gstr sttext;
399         struct subtitle_part stpart;
400 
401         title = str_new();
402         str_printf( &title, "Enter (sub)string or regexp to search for "
403                               "(with or without \"%s\")", CONFIG_);
404 
405 again:
406         dialog_clear();
407         dres = dialog_inputbox("Search Configuration Parameter",
408                               str_get(&title),
409                               10, 75, "");
410         switch (dres) {
411         case 0:
412                 break;
413         case 1:
414                 show_helptext("Search Configuration", search_help);
415                 goto again;
416         default:
417                 str_free(&title);
418                 return;
419         }
420 
421         /* strip the prefix if necessary */
422         dialog_input = dialog_input_result;
423         if (strncasecmp(dialog_input_result, CONFIG_, strlen(CONFIG_)) == 0)
424                 dialog_input += strlen(CONFIG_);
425 
426         sttext = str_new();
427         str_printf(&sttext, "Search (%s)", dialog_input_result);
428         stpart.text = str_get(&sttext);
429         list_add_tail(&stpart.entries, &trail);
430 
431         sym_arr = sym_re_search(dialog_input);
432         do {
433                 LIST_HEAD(head);
434                 struct menu *targets[JUMP_NB];
435                 int keys[JUMP_NB + 1], i;
436                 struct search_data data = {
437                         .head = &head,
438                         .targets = targets,
439                         .keys = keys,
440                 };
441                 struct jump_key *pos, *tmp;
442 
443                 res = get_relations_str(sym_arr, &head);
444                 set_subtitle();
445                 dres = show_textbox_ext("Search Results", (char *)
446                                         str_get(&res), 0, 0, keys, &vscroll,
447                                         &hscroll, &update_text, (void *)
448                                         &data);
449                 again = false;
450                 for (i = 0; i < JUMP_NB && keys[i]; i++)
451                         if (dres == keys[i]) {
452                                 conf(targets[i]->parent, targets[i]);
453                                 again = true;
454                         }
455                 str_free(&res);
456                 list_for_each_entry_safe(pos, tmp, &head, entries)
457                         free(pos);
458         } while (again);
459         free(sym_arr);
460         str_free(&title);
461         list_del(trail.prev);
462         str_free(&sttext);
463 }
464 
465 static void build_conf(struct menu *menu)
466 {
467         struct symbol *sym;
468         struct property *prop;
469         struct menu *child;
470         int type, tmp, doint = 2;
471         tristate val;
472         char ch;
473         bool visible;
474 
475         /*
476          * note: menu_is_visible() has side effect that it will
477          * recalc the value of the symbol.
478          */
479         visible = menu_is_visible(menu);
480         if (show_all_options && !menu_has_prompt(menu))
481                 return;
482         else if (!show_all_options && !visible)
483                 return;
484 
485         sym = menu->sym;
486         prop = menu->prompt;
487         if (!sym) {
488                 if (prop && menu != current_menu) {
489                         const char *prompt = menu_get_prompt(menu);
490                         switch (prop->type) {
491                         case P_MENU:
492                                 child_count++;
493                                 prompt = prompt;
494                                 if (single_menu_mode) {
495                                         item_make("%s%*c%s",
496                                                   menu->data ? "-->" : "++>",
497                                                   indent + 1, ' ', prompt);
498                                 } else
499                                         item_make("   %*c%s  %s",
500                                                   indent + 1, ' ', prompt,
501                                                   menu_is_empty(menu) ? "----" : "--->");
502                                 item_set_tag('m');
503                                 item_set_data(menu);
504                                 if (single_menu_mode && menu->data)
505                                         goto conf_childs;
506                                 return;
507                         case P_COMMENT:
508                                 if (prompt) {
509                                         child_count++;
510                                         item_make("   %*c*** %s ***", indent + 1, ' ', prompt);
511                                         item_set_tag(':');
512                                         item_set_data(menu);
513                                 }
514                                 break;
515                         default:
516                                 if (prompt) {
517                                         child_count++;
518                                         item_make("---%*c%s", indent + 1, ' ', prompt);
519                                         item_set_tag(':');
520                                         item_set_data(menu);
521                                 }
522                         }
523                 } else
524                         doint = 0;
525                 goto conf_childs;
526         }
527 
528         type = sym_get_type(sym);
529         if (sym_is_choice(sym)) {
530                 struct symbol *def_sym = sym_get_choice_value(sym);
531                 struct menu *def_menu = NULL;
532 
533                 child_count++;
534                 for (child = menu->list; child; child = child->next) {
535                         if (menu_is_visible(child) && child->sym == def_sym)
536                                 def_menu = child;
537                 }
538 
539                 val = sym_get_tristate_value(sym);
540                 if (sym_is_changable(sym)) {
541                         switch (type) {
542                         case S_BOOLEAN:
543                                 item_make("[%c]", val == no ? ' ' : '*');
544                                 break;
545                         case S_TRISTATE:
546                                 switch (val) {
547                                 case yes: ch = '*'; break;
548                                 case mod: ch = 'M'; break;
549                                 default:  ch = ' '; break;
550                                 }
551                                 item_make("<%c>", ch);
552                                 break;
553                         }
554                         item_set_tag('t');
555                         item_set_data(menu);
556                 } else {
557                         item_make("   ");
558                         item_set_tag(def_menu ? 't' : ':');
559                         item_set_data(menu);
560                 }
561 
562                 item_add_str("%*c%s", indent + 1, ' ', menu_get_prompt(menu));
563                 if (val == yes) {
564                         if (def_menu) {
565                                 item_add_str(" (%s)", menu_get_prompt(def_menu));
566                                 item_add_str("  --->");
567                                 if (def_menu->list) {
568                                         indent += 2;
569                                         build_conf(def_menu);
570                                         indent -= 2;
571                                 }
572                         }
573                         return;
574                 }
575         } else {
576                 if (menu == current_menu) {
577                         item_make("---%*c%s", indent + 1, ' ', menu_get_prompt(menu));
578                         item_set_tag(':');
579                         item_set_data(menu);
580                         goto conf_childs;
581                 }
582                 child_count++;
583                 val = sym_get_tristate_value(sym);
584                 if (sym_is_choice_value(sym) && val == yes) {
585                         item_make("   ");
586                         item_set_tag(':');
587                         item_set_data(menu);
588                 } else {
589                         switch (type) {
590                         case S_BOOLEAN:
591                                 if (sym_is_changable(sym))
592                                         item_make("[%c]", val == no ? ' ' : '*');
593                                 else
594                                         item_make("-%c-", val == no ? ' ' : '*');
595                                 item_set_tag('t');
596                                 item_set_data(menu);
597                                 break;
598                         case S_TRISTATE:
599                                 switch (val) {
600                                 case yes: ch = '*'; break;
601                                 case mod: ch = 'M'; break;
602                                 default:  ch = ' '; break;
603                                 }
604                                 if (sym_is_changable(sym)) {
605                                         if (sym->rev_dep.tri == mod)
606                                                 item_make("{%c}", ch);
607                                         else
608                                                 item_make("<%c>", ch);
609                                 } else
610                                         item_make("-%c-", ch);
611                                 item_set_tag('t');
612                                 item_set_data(menu);
613                                 break;
614                         default:
615                                 tmp = 2 + strlen(sym_get_string_value(sym)); /* () = 2 */
616                                 item_make("(%s)", sym_get_string_value(sym));
617                                 tmp = indent - tmp + 4;
618                                 if (tmp < 0)
619                                         tmp = 0;
620                                 item_add_str("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
621                                              (sym_has_value(sym) || !sym_is_changable(sym)) ?
622                                              "" : " (NEW)");
623                                 item_set_tag('s');
624                                 item_set_data(menu);
625                                 goto conf_childs;
626                         }
627                 }
628                 item_add_str("%*c%s%s", indent + 1, ' ', menu_get_prompt(menu),
629                           (sym_has_value(sym) || !sym_is_changable(sym)) ?
630                           "" : " (NEW)");
631                 if (menu->prompt->type == P_MENU) {
632                         item_add_str("  %s", menu_is_empty(menu) ? "----" : "--->");
633                         return;
634                 }
635         }
636 
637 conf_childs:
638         indent += doint;
639         for (child = menu->list; child; child = child->next)
640                 build_conf(child);
641         indent -= doint;
642 }
643 
644 static void conf(struct menu *menu, struct menu *active_menu)
645 {
646         struct menu *submenu;
647         const char *prompt = menu_get_prompt(menu);
648         struct subtitle_part stpart;
649         struct symbol *sym;
650         int res;
651         int s_scroll = 0;
652 
653         if (menu != &rootmenu)
654                 stpart.text = menu_get_prompt(menu);
655         else
656                 stpart.text = NULL;
657         list_add_tail(&stpart.entries, &trail);
658 
659         while (1) {
660                 item_reset();
661                 current_menu = menu;
662                 build_conf(menu);
663                 if (!child_count)
664                         break;
665                 set_subtitle();
666                 dialog_clear();
667                 res = dialog_menu(prompt ? prompt : "Main Menu",
668                                   menu_instructions,
669                                   active_menu, &s_scroll);
670                 if (res == 1 || res == KEY_ESC || res == -ERRDISPLAYTOOSMALL)
671                         break;
672                 if (item_count() != 0) {
673                         if (!item_activate_selected())
674                                 continue;
675                         if (!item_tag())
676                                 continue;
677                 }
678                 submenu = item_data();
679                 active_menu = item_data();
680                 if (submenu)
681                         sym = submenu->sym;
682                 else
683                         sym = NULL;
684 
685                 switch (res) {
686                 case 0:
687                         switch (item_tag()) {
688                         case 'm':
689                                 if (single_menu_mode)
690                                         submenu->data = (void *) (long) !submenu->data;
691                                 else
692                                         conf(submenu, NULL);
693                                 break;
694                         case 't':
695                                 if (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)
696                                         conf_choice(submenu);
697                                 else if (submenu->prompt->type == P_MENU)
698                                         conf(submenu, NULL);
699                                 break;
700                         case 's':
701                                 conf_string(submenu);
702                                 break;
703                         }
704                         break;
705                 case 2:
706                         if (sym)
707                                 show_help(submenu);
708                         else {
709                                 reset_subtitle();
710                                 show_helptext("README", mconf_readme);
711                         }
712                         break;
713                 case 3:
714                         reset_subtitle();
715                         conf_save();
716                         break;
717                 case 4:
718                         reset_subtitle();
719                         conf_load();
720                         break;
721                 case 5:
722                         if (item_is_tag('t')) {
723                                 if (sym_set_tristate_value(sym, yes))
724                                         break;
725                                 if (sym_set_tristate_value(sym, mod))
726                                         show_textbox(NULL, setmod_text, 6, 74);
727                         }
728                         break;
729                 case 6:
730                         if (item_is_tag('t'))
731                                 sym_set_tristate_value(sym, no);
732                         break;
733                 case 7:
734                         if (item_is_tag('t'))
735                                 sym_set_tristate_value(sym, mod);
736                         break;
737                 case 8:
738                         if (item_is_tag('t'))
739                                 sym_toggle_tristate_value(sym);
740                         else if (item_is_tag('m'))
741                                 conf(submenu, NULL);
742                         break;
743                 case 9:
744                         search_conf();
745                         break;
746                 case 10:
747                         show_all_options = !show_all_options;
748                         break;
749                 }
750         }
751 
752         list_del(trail.prev);
753 }
754 
755 static int show_textbox_ext(const char *title, char *text, int r, int c, int
756                             *keys, int *vscroll, int *hscroll, update_text_fn
757                             update_text, void *data)
758 {
759         dialog_clear();
760         return dialog_textbox(title, text, r, c, keys, vscroll, hscroll,
761                               update_text, data);
762 }
763 
764 static void show_textbox(const char *title, const char *text, int r, int c)
765 {
766         show_textbox_ext(title, (char *) text, r, c, (int []) {0}, NULL, NULL,
767                          NULL, NULL);
768 }
769 
770 static void show_helptext(const char *title, const char *text)
771 {
772         show_textbox(title, text, 0, 0);
773 }
774 
775 static void conf_message_callback(const char *fmt, va_list ap)
776 {
777         char buf[PATH_MAX+1];
778 
779         vsnprintf(buf, sizeof(buf), fmt, ap);
780         if (save_and_exit) {
781                 if (!silent)
782                         printf("%s", buf);
783         } else {
784                 show_textbox(NULL, buf, 6, 60);
785         }
786 }
787 
788 static void show_help(struct menu *menu)
789 {
790         struct gstr help = str_new();
791 
792         help.max_width = getmaxx(stdscr) - 10;
793         menu_get_ext_help(menu, &help);
794 
795         show_helptext(menu_get_prompt(menu), str_get(&help));
796         str_free(&help);
797 }
798 
799 static void conf_choice(struct menu *menu)
800 {
801         const char *prompt = menu_get_prompt(menu);
802         struct menu *child;
803         struct symbol *active;
804 
805         active = sym_get_choice_value(menu->sym);
806         while (1) {
807                 int res;
808                 int selected;
809                 item_reset();
810 
811                 current_menu = menu;
812                 for (child = menu->list; child; child = child->next) {
813                         if (!menu_is_visible(child))
814                                 continue;
815                         if (child->sym)
816                                 item_make("%s", menu_get_prompt(child));
817                         else {
818                                 item_make("*** %s ***", menu_get_prompt(child));
819                                 item_set_tag(':');
820                         }
821                         item_set_data(child);
822                         if (child->sym == active)
823                                 item_set_selected(1);
824                         if (child->sym == sym_get_choice_value(menu->sym))
825                                 item_set_tag('X');
826                 }
827                 dialog_clear();
828                 res = dialog_checklist(prompt ? prompt : "Main Menu",
829                                         radiolist_instructions,
830                                         MENUBOX_HEIGTH_MIN,
831                                         MENUBOX_WIDTH_MIN,
832                                         CHECKLIST_HEIGTH_MIN);
833                 selected = item_activate_selected();
834                 switch (res) {
835                 case 0:
836                         if (selected) {
837                                 child = item_data();
838                                 if (!child->sym)
839                                         break;
840 
841                                 sym_set_tristate_value(child->sym, yes);
842                         }
843                         return;
844                 case 1:
845                         if (selected) {
846                                 child = item_data();
847                                 show_help(child);
848                                 active = child->sym;
849                         } else
850                                 show_help(menu);
851                         break;
852                 case KEY_ESC:
853                         return;
854                 case -ERRDISPLAYTOOSMALL:
855                         return;
856                 }
857         }
858 }
859 
860 static void conf_string(struct menu *menu)
861 {
862         const char *prompt = menu_get_prompt(menu);
863 
864         while (1) {
865                 int res;
866                 const char *heading;
867 
868                 switch (sym_get_type(menu->sym)) {
869                 case S_INT:
870                         heading = inputbox_instructions_int;
871                         break;
872                 case S_HEX:
873                         heading = inputbox_instructions_hex;
874                         break;
875                 case S_STRING:
876                         heading = inputbox_instructions_string;
877                         break;
878                 default:
879                         heading = "Internal mconf error!";
880                 }
881                 dialog_clear();
882                 res = dialog_inputbox(prompt ? prompt : "Main Menu",
883                                       heading, 10, 75,
884                                       sym_get_string_value(menu->sym));
885                 switch (res) {
886                 case 0:
887                         if (sym_set_string_value(menu->sym, dialog_input_result))
888                                 return;
889                         show_textbox(NULL, "You have made an invalid entry.", 5, 43);
890                         break;
891                 case 1:
892                         show_help(menu);
893                         break;
894                 case KEY_ESC:
895                         return;
896                 }
897         }
898 }
899 
900 static void conf_load(void)
901 {
902 
903         while (1) {
904                 int res;
905                 dialog_clear();
906                 res = dialog_inputbox(NULL, load_config_text,
907                                       11, 55, filename);
908                 switch(res) {
909                 case 0:
910                         if (!dialog_input_result[0])
911                                 return;
912                         if (!conf_read(dialog_input_result)) {
913                                 set_config_filename(dialog_input_result);
914                                 sym_set_change_count(1);
915                                 return;
916                         }
917                         show_textbox(NULL, "File does not exist!", 5, 38);
918                         break;
919                 case 1:
920                         show_helptext("Load Alternate Configuration", load_config_help);
921                         break;
922                 case KEY_ESC:
923                         return;
924                 }
925         }
926 }
927 
928 static void conf_save(void)
929 {
930         while (1) {
931                 int res;
932                 dialog_clear();
933                 res = dialog_inputbox(NULL, save_config_text,
934                                       11, 55, filename);
935                 switch(res) {
936                 case 0:
937                         if (!dialog_input_result[0])
938                                 return;
939                         if (!conf_write(dialog_input_result)) {
940                                 set_config_filename(dialog_input_result);
941                                 return;
942                         }
943                         show_textbox(NULL, "Can't create file!  Probably a nonexistent directory.", 5, 60);
944                         break;
945                 case 1:
946                         show_helptext("Save Alternate Configuration", save_config_help);
947                         break;
948                 case KEY_ESC:
949                         return;
950                 }
951         }
952 }
953 
954 static int handle_exit(void)
955 {
956         int res;
957 
958         save_and_exit = 1;
959         reset_subtitle();
960         dialog_clear();
961         if (conf_get_changed())
962                 res = dialog_yesno(NULL,
963                                    "Do you wish to save your new configuration?\n"
964                                      "(Press <ESC><ESC> to continue kernel configuration.)",
965                                    6, 60);
966         else
967                 res = -1;
968 
969         end_dialog(saved_x, saved_y);
970 
971         switch (res) {
972         case 0:
973                 if (conf_write(filename)) {
974                         fprintf(stderr, "\n\n"
975                                           "Error while writing of the configuration.\n"
976                                           "Your configuration changes were NOT saved."
977                                           "\n\n");
978                         return 1;
979                 }
980                 /* fall through */
981         case -1:
982                 if (!silent)
983                         printf("\n\n"
984                                  "*** End of the configuration.\n"
985                                  "*** Execute 'make' to start the build or try 'make help'."
986                                  "\n\n");
987                 res = 0;
988                 break;
989         default:
990                 if (!silent)
991                         fprintf(stderr, "\n\n"
992                                           "Your configuration changes were NOT saved."
993                                           "\n\n");
994                 if (res != KEY_ESC)
995                         res = 0;
996         }
997 
998         return res;
999 }
1000 
1001 static void sig_handler(int signo)
1002 {
1003         exit(handle_exit());
1004 }
1005 
1006 int main(int ac, char **av)
1007 {
1008         char *mode;
1009         int res;
1010 
1011         signal(SIGINT, sig_handler);
1012 
1013         if (ac > 1 && strcmp(av[1], "-s") == 0) {
1014                 silent = 1;
1015                 /* Silence conf_read() until the real callback is set up */
1016                 conf_set_message_callback(NULL);
1017                 av++;
1018         }
1019         conf_parse(av[1]);
1020         conf_read(NULL);
1021 
1022         mode = getenv("MENUCONFIG_MODE");
1023         if (mode) {
1024                 if (!strcasecmp(mode, "single_menu"))
1025                         single_menu_mode = 1;
1026         }
1027 
1028         if (init_dialog(NULL)) {
1029                 fprintf(stderr, "Your display is too small to run Menuconfig!\n");
1030                 fprintf(stderr, "It must be at least 19 lines by 80 columns.\n");
1031                 return 1;
1032         }
1033 
1034         set_config_filename(conf_get_configname());
1035         conf_set_message_callback(conf_message_callback);
1036         do {
1037                 conf(&rootmenu, NULL);
1038                 res = handle_exit();
1039         } while (res == KEY_ESC);
1040 
1041         return res;
1042 }
1043 

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