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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2002 Roman Zippel <[email protected]>
4 */
5
6#include <ctype.h>
7#include <stdarg.h>
8#include <stdlib.h>
9#include <string.h>
10
11#include <list.h>
12#include <xalloc.h>
13#include "lkc.h"
14#include "internal.h"
15
16static const char nohelp_text[] = "There is no help available for this option.";
17
18struct menu rootmenu = { .type = M_MENU };
19static struct menu **last_entry_ptr;
20
21/**
22 * menu_next - return the next menu entry with depth-first traversal
23 * @menu: pointer to the current menu
24 * @root: root of the sub-tree to traverse. If NULL is given, the traveral
25 * continues until it reaches the end of the entire menu tree.
26 * return: the menu to visit next, or NULL when it reaches the end.
27 */
28struct menu *menu_next(struct menu *menu, struct menu *root)
29{
30 if (menu->list)
31 return menu->list;
32
33 while (menu != root && !menu->next)
34 menu = menu->parent;
35
36 if (menu == root)
37 return NULL;
38
39 return menu->next;
40}
41
42void menu_warn(const struct menu *menu, const char *fmt, ...)
43{
44 va_list ap;
45 va_start(ap, fmt);
46 fprintf(stderr, "%s:%d:warning: ", menu->filename, menu->lineno);
47 vfprintf(stderr, fmt, ap);
48 fprintf(stderr, "\n");
49 va_end(ap);
50}
51
52static void prop_warn(const struct property *prop, const char *fmt, ...)
53{
54 va_list ap;
55 va_start(ap, fmt);
56 fprintf(stderr, "%s:%d:warning: ", prop->filename, prop->lineno);
57 vfprintf(stderr, fmt, ap);
58 fprintf(stderr, "\n");
59 va_end(ap);
60}
61
62void _menu_init(void)
63{
64 current_entry = current_menu = &rootmenu;
65 last_entry_ptr = &rootmenu.list;
66}
67
68void menu_add_entry(struct symbol *sym, enum menu_type type)
69{
70 struct menu *menu;
71
72 menu = xmalloc(sizeof(*menu));
73 memset(menu, 0, sizeof(*menu));
74 menu->type = type;
75 menu->sym = sym;
76 menu->parent = current_menu;
77 menu->filename = cur_filename;
78 menu->lineno = cur_lineno;
79
80 *last_entry_ptr = menu;
81 last_entry_ptr = &menu->next;
82 current_entry = menu;
83 if (sym)
84 list_add_tail(&menu->link, &sym->menus);
85}
86
87struct menu *menu_add_menu(void)
88{
89 last_entry_ptr = &current_entry->list;
90 current_menu = current_entry;
91 return current_menu;
92}
93
94void menu_end_menu(void)
95{
96 last_entry_ptr = &current_menu->next;
97 current_menu = current_menu->parent;
98}
99
100/*
101 * Rewrites 'm' to 'm' && MODULES, so that it evaluates to 'n' when running
102 * without modules
103 */
104static struct expr *rewrite_m(struct expr *e)
105{
106 if (!e)
107 return e;
108
109 switch (e->type) {
110 case E_NOT:
111 e = expr_alloc_one(E_NOT, rewrite_m(e->left.expr));
112 break;
113 case E_OR:
114 case E_AND:
115 e = expr_alloc_two(e->type,
116 rewrite_m(e->left.expr),
117 rewrite_m(e->right.expr));
118 break;
119 case E_SYMBOL:
120 /* change 'm' into 'm' && MODULES */
121 if (e->left.sym == &symbol_mod)
122 return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
123 break;
124 default:
125 break;
126 }
127 return e;
128}
129
130void menu_add_dep(struct expr *dep, struct expr *cond)
131{
132 if (cond) {
133 /*
134 * We have "depends on X if Y" and we want:
135 * Y != n --> X
136 * Y == n --> y
137 * That simplifies to: (X || (Y == n))
138 */
139 dep = expr_alloc_or(dep,
140 expr_trans_compare(cond, E_EQUAL, &symbol_no));
141 }
142 current_entry->dep = expr_alloc_and(current_entry->dep, dep);
143}
144
145void menu_set_type(int type)
146{
147 struct symbol *sym = current_entry->sym;
148
149 if (sym->type == type)
150 return;
151 if (sym->type == S_UNKNOWN) {
152 sym->type = type;
153 return;
154 }
155 menu_warn(current_entry,
156 "ignoring type redefinition of '%s' from '%s' to '%s'",
157 sym->name ? sym->name : "<choice>",
158 sym_type_name(sym->type), sym_type_name(type));
159}
160
161static struct property *menu_add_prop(enum prop_type type, struct expr *expr,
162 struct expr *dep)
163{
164 struct property *prop;
165
166 prop = xmalloc(sizeof(*prop));
167 memset(prop, 0, sizeof(*prop));
168 prop->type = type;
169 prop->filename = cur_filename;
170 prop->lineno = cur_lineno;
171 prop->menu = current_entry;
172 prop->expr = expr;
173 prop->visible.expr = dep;
174
175 /* append property to the prop list of symbol */
176 if (current_entry->sym) {
177 struct property **propp;
178
179 for (propp = &current_entry->sym->prop;
180 *propp;
181 propp = &(*propp)->next)
182 ;
183 *propp = prop;
184 }
185
186 return prop;
187}
188
189struct property *menu_add_prompt(enum prop_type type, const char *prompt,
190 struct expr *dep)
191{
192 struct property *prop = menu_add_prop(type, NULL, dep);
193
194 if (isspace(*prompt)) {
195 prop_warn(prop, "leading whitespace ignored");
196 while (isspace(*prompt))
197 prompt++;
198 }
199 if (current_entry->prompt)
200 prop_warn(prop, "prompt redefined");
201
202 /* Apply all upper menus' visibilities to actual prompts. */
203 if (type == P_PROMPT) {
204 struct menu *menu = current_entry;
205
206 while ((menu = menu->parent) != NULL) {
207
208 if (!menu->visibility)
209 continue;
210 prop->visible.expr = expr_alloc_and(prop->visible.expr,
211 menu->visibility);
212 }
213 }
214
215 current_entry->prompt = prop;
216 prop->text = prompt;
217
218 return prop;
219}
220
221void menu_add_visibility(struct expr *expr)
222{
223 current_entry->visibility = expr_alloc_and(current_entry->visibility,
224 expr);
225}
226
227void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
228{
229 menu_add_prop(type, expr, dep);
230}
231
232void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
233{
234 menu_add_prop(type, expr_alloc_symbol(sym), dep);
235}
236
237static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
238{
239 return sym2->type == S_INT || sym2->type == S_HEX ||
240 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
241}
242
243static void sym_check_prop(struct symbol *sym)
244{
245 struct property *prop;
246 struct symbol *sym2;
247 char *use;
248
249 for (prop = sym->prop; prop; prop = prop->next) {
250 switch (prop->type) {
251 case P_DEFAULT:
252 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
253 prop->expr->type != E_SYMBOL)
254 prop_warn(prop,
255 "default for config symbol '%s'"
256 " must be a single symbol", sym->name);
257 if (prop->expr->type != E_SYMBOL)
258 break;
259 sym2 = prop_get_symbol(prop);
260 if (sym->type == S_HEX || sym->type == S_INT) {
261 if (!menu_validate_number(sym, sym2))
262 prop_warn(prop,
263 "'%s': number is invalid",
264 sym->name);
265 }
266 if (sym_is_choice(sym)) {
267 struct menu *choice = sym_get_choice_menu(sym2);
268
269 if (!choice || choice->sym != sym)
270 prop_warn(prop,
271 "choice default symbol '%s' is not contained in the choice",
272 sym2->name);
273 }
274 break;
275 case P_SELECT:
276 case P_IMPLY:
277 use = prop->type == P_SELECT ? "select" : "imply";
278 sym2 = prop_get_symbol(prop);
279 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
280 prop_warn(prop,
281 "config symbol '%s' uses %s, but is "
282 "not bool or tristate", sym->name, use);
283 else if (sym2->type != S_UNKNOWN &&
284 sym2->type != S_BOOLEAN &&
285 sym2->type != S_TRISTATE)
286 prop_warn(prop,
287 "'%s' has wrong type. '%s' only "
288 "accept arguments of bool and "
289 "tristate type", sym2->name, use);
290 break;
291 case P_RANGE:
292 if (sym->type != S_INT && sym->type != S_HEX)
293 prop_warn(prop, "range is only allowed "
294 "for int or hex symbols");
295 if (!menu_validate_number(sym, prop->expr->left.sym) ||
296 !menu_validate_number(sym, prop->expr->right.sym))
297 prop_warn(prop, "range is invalid");
298 break;
299 default:
300 ;
301 }
302 }
303}
304
305static void _menu_finalize(struct menu *parent, bool inside_choice)
306{
307 struct menu *menu, *last_menu;
308 struct symbol *sym;
309 struct property *prop;
310 struct expr *basedep, *dep, *dep2;
311
312 sym = parent->sym;
313 if (parent->list) {
314 /*
315 * This menu node has children. We (recursively) process them
316 * and propagate parent dependencies before moving on.
317 */
318
319 /* For each child menu node... */
320 for (menu = parent->list; menu; menu = menu->next) {
321 /*
322 * Propagate parent dependencies to the child menu
323 * node, also rewriting and simplifying expressions
324 */
325 basedep = rewrite_m(menu->dep);
326 basedep = expr_transform(basedep);
327 basedep = expr_alloc_and(parent->dep, basedep);
328 basedep = expr_eliminate_dups(basedep);
329 menu->dep = basedep;
330
331 if (menu->sym)
332 /*
333 * Note: For symbols, all prompts are included
334 * too in the symbol's own property list
335 */
336 prop = menu->sym->prop;
337 else
338 /*
339 * For non-symbol menu nodes, we just need to
340 * handle the prompt
341 */
342 prop = menu->prompt;
343
344 /* For each property... */
345 for (; prop; prop = prop->next) {
346 if (prop->menu != menu)
347 /*
348 * Two possibilities:
349 *
350 * 1. The property lacks dependencies
351 * and so isn't location-specific,
352 * e.g. an 'option'
353 *
354 * 2. The property belongs to a symbol
355 * defined in multiple locations and
356 * is from some other location. It
357 * will be handled there in that
358 * case.
359 *
360 * Skip the property.
361 */
362 continue;
363
364 /*
365 * Propagate parent dependencies to the
366 * property's condition, rewriting and
367 * simplifying expressions at the same time
368 */
369 dep = rewrite_m(prop->visible.expr);
370 dep = expr_transform(dep);
371 dep = expr_alloc_and(basedep, dep);
372 dep = expr_eliminate_dups(dep);
373 prop->visible.expr = dep;
374
375 /*
376 * Handle selects and implies, which modify the
377 * dependencies of the selected/implied symbol
378 */
379 if (prop->type == P_SELECT) {
380 struct symbol *es = prop_get_symbol(prop);
381 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
382 expr_alloc_and(expr_alloc_symbol(menu->sym), dep));
383 } else if (prop->type == P_IMPLY) {
384 struct symbol *es = prop_get_symbol(prop);
385 es->implied.expr = expr_alloc_or(es->implied.expr,
386 expr_alloc_and(expr_alloc_symbol(menu->sym), dep));
387 }
388 }
389 }
390
391 /*
392 * Recursively process children in the same fashion before
393 * moving on
394 */
395 for (menu = parent->list; menu; menu = menu->next)
396 _menu_finalize(menu, sym && sym_is_choice(sym));
397 } else if (!inside_choice && sym) {
398 /*
399 * Automatic submenu creation. If sym is a symbol and A, B, C,
400 * ... are consecutive items (symbols, menus, ifs, etc.) that
401 * all depend on sym, then the following menu structure is
402 * created:
403 *
404 * sym
405 * +-A
406 * +-B
407 * +-C
408 * ...
409 *
410 * This also works recursively, giving the following structure
411 * if A is a symbol and B depends on A:
412 *
413 * sym
414 * +-A
415 * | +-B
416 * +-C
417 * ...
418 */
419
420 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
421 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
422 basedep = expr_eliminate_dups(expr_transform(basedep));
423
424 /* Examine consecutive elements after sym */
425 last_menu = NULL;
426 for (menu = parent->next; menu; menu = menu->next) {
427 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
428 if (!expr_contains_symbol(dep, sym))
429 /* No dependency, quit */
430 break;
431 /*
432 * Note that it's actually possible to depend on both
433 * 'SYM!=y' and 'SYM=y', so we need to first check if
434 * it's a positive dependency before checking if it's
435 * a negative dependency. See example:
436 * 'SFC && MTD && !(SFC=y && MTD=m)'
437 */
438 if (expr_depends_symbol(dep, sym))
439 /* Absolute dependency, put in submenu */
440 goto next;
441 if (expr_contains_symbol_negated(dep, sym))
442 /* Negative dependency, quit */
443 break;
444
445 /*
446 * Also consider it a dependency on sym if our
447 * dependencies contain sym and are a "superset" of
448 * sym's dependencies, e.g. '(sym || Q) && R' when sym
449 * depends on R.
450 *
451 * Note that 'R' might be from an enclosing menu or if,
452 * making this a more common case than it might seem.
453 */
454 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
455 dep = expr_eliminate_dups(expr_transform(dep));
456 dep2 = basedep;
457 expr_eliminate_eq(&dep, &dep2);
458 if (!expr_is_yes(dep2)) {
459 /* Not superset, quit */
460 break;
461 }
462 /* Superset, put in submenu */
463 next:
464 _menu_finalize(menu, false);
465 menu->parent = parent;
466 last_menu = menu;
467 }
468 if (last_menu) {
469 parent->list = parent->next;
470 parent->next = last_menu->next;
471 last_menu->next = NULL;
472 }
473
474 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
475 }
476 for (menu = parent->list; menu; menu = menu->next) {
477 /*
478 * This code serves two purposes:
479 *
480 * (1) Flattening 'if' blocks, which do not specify a submenu
481 * and only add dependencies.
482 *
483 * (Automatic submenu creation might still create a submenu
484 * from an 'if' before this code runs.)
485 *
486 * (2) "Undoing" any automatic submenus created earlier below
487 * promptless symbols.
488 *
489 * Before:
490 *
491 * A
492 * if ... (or promptless symbol)
493 * +-B
494 * +-C
495 * D
496 *
497 * After:
498 *
499 * A
500 * if ... (or promptless symbol)
501 * B
502 * C
503 * D
504 */
505 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
506 for (last_menu = menu->list; ; last_menu = last_menu->next) {
507 last_menu->parent = parent;
508 if (!last_menu->next)
509 break;
510 }
511 last_menu->next = menu->next;
512 menu->next = menu->list;
513 menu->list = NULL;
514 }
515 }
516
517 if (sym && !(sym->flags & SYMBOL_WARNED)) {
518 if (sym->type == S_UNKNOWN)
519 menu_warn(parent, "config symbol defined without type");
520
521 /* Check properties connected to this symbol */
522 sym_check_prop(sym);
523 sym->flags |= SYMBOL_WARNED;
524 }
525}
526
527void menu_finalize(void)
528{
529 _menu_finalize(&rootmenu, false);
530}
531
532bool menu_has_prompt(const struct menu *menu)
533{
534 if (!menu->prompt)
535 return false;
536 return true;
537}
538
539/*
540 * Determine if a menu is empty.
541 * A menu is considered empty if it contains no or only
542 * invisible entries.
543 */
544bool menu_is_empty(struct menu *menu)
545{
546 struct menu *child;
547
548 for (child = menu->list; child; child = child->next) {
549 if (menu_is_visible(child))
550 return(false);
551 }
552 return(true);
553}
554
555bool menu_is_visible(struct menu *menu)
556{
557 struct menu *child;
558 struct symbol *sym;
559 tristate visible;
560
561 if (!menu->prompt)
562 return false;
563
564 if (menu->visibility) {
565 if (expr_calc_value(menu->visibility) == no)
566 return false;
567 }
568
569 sym = menu->sym;
570 if (sym) {
571 sym_calc_value(sym);
572 visible = menu->prompt->visible.tri;
573 } else
574 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
575
576 if (visible != no)
577 return true;
578
579 if (!sym || sym_get_tristate_value(menu->sym) == no)
580 return false;
581
582 for (child = menu->list; child; child = child->next)
583 if (menu_is_visible(child))
584 return true;
585
586 return false;
587}
588
589const char *menu_get_prompt(const struct menu *menu)
590{
591 if (menu->prompt)
592 return menu->prompt->text;
593 else if (menu->sym)
594 return menu->sym->name;
595 return NULL;
596}
597
598/**
599 * menu_get_parent_menu - return the parent menu or NULL
600 * @menu: pointer to the menu
601 * return: the parent menu, or NULL if there is no parent.
602 */
603struct menu *menu_get_parent_menu(struct menu *menu)
604{
605 for (menu = menu->parent; menu; menu = menu->parent)
606 if (menu->type == M_MENU)
607 return menu;
608
609 return NULL;
610}
611
612/**
613 * menu_get_menu_or_parent_menu - return the parent menu or the menu itself
614 * @menu: pointer to the menu
615 * return: the parent menu. If the given argument is already a menu, return
616 * itself.
617 */
618struct menu *menu_get_menu_or_parent_menu(struct menu *menu)
619{
620 enum prop_type type;
621
622 for (; menu != &rootmenu; menu = menu->parent) {
623 type = menu->prompt ? menu->prompt->type : 0;
624 if (type == P_MENU)
625 break;
626 }
627 return menu;
628}
629
630static void get_def_str(struct gstr *r, const struct menu *menu)
631{
632 str_printf(r, "Defined at %s:%d\n",
633 menu->filename, menu->lineno);
634}
635
636static void get_dep_str(struct gstr *r, const struct expr *expr,
637 const char *prefix)
638{
639 if (!expr_is_yes(expr)) {
640 str_append(r, prefix);
641 expr_gstr_print(expr, r);
642 str_append(r, "\n");
643 }
644}
645
646int __attribute__((weak)) get_jump_key_char(void)
647{
648 return -1;
649}
650
651static void get_prompt_str(struct gstr *r, struct property *prop,
652 struct list_head *head)
653{
654 int i, j;
655 struct menu *submenu[8], *menu, *location = NULL;
656 struct jump_key *jump = NULL;
657
658 str_printf(r, " Prompt: %s\n", prop->text);
659
660 get_dep_str(r, prop->menu->dep, " Depends on: ");
661 /*
662 * Most prompts in Linux have visibility that exactly matches their
663 * dependencies. For these, we print only the dependencies to improve
664 * readability. However, prompts with inline "if" expressions and
665 * prompts with a parent that has a "visible if" expression have
666 * differing dependencies and visibility. In these rare cases, we
667 * print both.
668 */
669 if (!expr_eq(prop->menu->dep, prop->visible.expr))
670 get_dep_str(r, prop->visible.expr, " Visible if: ");
671
672 menu = prop->menu;
673 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
674 submenu[i++] = menu;
675 if (location == NULL && menu_is_visible(menu))
676 location = menu;
677 }
678 if (head && location) {
679 jump = xmalloc(sizeof(struct jump_key));
680 jump->target = location;
681 list_add_tail(&jump->entries, head);
682 }
683
684 str_printf(r, " Location:\n");
685 for (j = 0; --i >= 0; j++) {
686 int jk = -1;
687 int indent = 2 * j + 4;
688
689 menu = submenu[i];
690 if (jump && menu == location) {
691 jump->offset = strlen(r->s);
692 jk = get_jump_key_char();
693 }
694
695 if (jk >= 0) {
696 str_printf(r, "(%c)", jk);
697 indent -= 3;
698 }
699
700 str_printf(r, "%*c-> %s", indent, ' ', menu_get_prompt(menu));
701 if (menu->sym) {
702 str_printf(r, " (%s [=%s])", menu->sym->name ?
703 menu->sym->name : "<choice>",
704 sym_get_string_value(menu->sym));
705 }
706 str_append(r, "\n");
707 }
708}
709
710static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
711 enum prop_type tok, const char *prefix)
712{
713 bool hit = false;
714 struct property *prop;
715
716 for_all_properties(sym, prop, tok) {
717 if (!hit) {
718 str_append(r, prefix);
719 hit = true;
720 } else
721 str_printf(r, " && ");
722 expr_gstr_print(prop->expr, r);
723 }
724 if (hit)
725 str_append(r, "\n");
726}
727
728/*
729 * head is optional and may be NULL
730 */
731static void get_symbol_str(struct gstr *r, struct symbol *sym,
732 struct list_head *head)
733{
734 struct property *prop;
735 struct menu *menu;
736
737 if (sym && sym->name) {
738 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
739 sym_get_string_value(sym));
740 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
741 if (sym->type == S_INT || sym->type == S_HEX) {
742 prop = sym_get_range_prop(sym);
743 if (prop) {
744 str_printf(r, "Range : ");
745 expr_gstr_print(prop->expr, r);
746 str_append(r, "\n");
747 }
748 }
749 }
750
751 /* Print the definitions with prompts before the ones without */
752 list_for_each_entry(menu, &sym->menus, link) {
753 if (menu->prompt) {
754 get_def_str(r, menu);
755 get_prompt_str(r, menu->prompt, head);
756 }
757 }
758
759 list_for_each_entry(menu, &sym->menus, link) {
760 if (!menu->prompt) {
761 get_def_str(r, menu);
762 get_dep_str(r, menu->dep, " Depends on: ");
763 }
764 }
765
766 get_symbol_props_str(r, sym, P_SELECT, "Selects: ");
767 if (sym->rev_dep.expr) {
768 expr_gstr_print_revdep(sym->rev_dep.expr, r, yes, "Selected by [y]:\n");
769 expr_gstr_print_revdep(sym->rev_dep.expr, r, mod, "Selected by [m]:\n");
770 expr_gstr_print_revdep(sym->rev_dep.expr, r, no, "Selected by [n]:\n");
771 }
772
773 get_symbol_props_str(r, sym, P_IMPLY, "Implies: ");
774 if (sym->implied.expr) {
775 expr_gstr_print_revdep(sym->implied.expr, r, yes, "Implied by [y]:\n");
776 expr_gstr_print_revdep(sym->implied.expr, r, mod, "Implied by [m]:\n");
777 expr_gstr_print_revdep(sym->implied.expr, r, no, "Implied by [n]:\n");
778 }
779
780 str_append(r, "\n\n");
781}
782
783struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
784{
785 struct symbol *sym;
786 struct gstr res = str_new();
787 int i;
788
789 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
790 get_symbol_str(&res, sym, head);
791 if (!i)
792 str_append(&res, "No matches found.\n");
793 return res;
794}
795
796
797void menu_get_ext_help(struct menu *menu, struct gstr *help)
798{
799 struct symbol *sym = menu->sym;
800 const char *help_text = nohelp_text;
801
802 if (menu->help) {
803 if (sym->name)
804 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
805 help_text = menu->help;
806 }
807 str_printf(help, "%s\n", help_text);
808 if (sym)
809 get_symbol_str(help, sym, NULL);
810}
811
812/**
813 * menu_dump - dump all menu entries in a tree-like format
814 */
815void menu_dump(void)
816{
817 struct menu *menu = &rootmenu;
818 unsigned long long bits = 0;
819 int indent = 0;
820
821 while (menu) {
822
823 for (int i = indent - 1; i >= 0; i--) {
824 if (bits & (1ULL << i)) {
825 if (i > 0)
826 printf("| ");
827 else
828 printf("|-- ");
829 } else {
830 if (i > 0)
831 printf(" ");
832 else
833 printf("`-- ");
834 }
835 }
836
837 switch (menu->type) {
838 case M_CHOICE:
839 printf("choice \"%s\"\n", menu->prompt->text);
840 break;
841 case M_COMMENT:
842 printf("comment \"%s\"\n", menu->prompt->text);
843 break;
844 case M_IF:
845 printf("if\n");
846 break;
847 case M_MENU:
848 printf("menu \"%s\"", menu->prompt->text);
849 if (!menu->sym) {
850 printf("\n");
851 break;
852 }
853 printf(" + ");
854 /* fallthrough */
855 case M_NORMAL:
856 printf("symbol %s\n", menu->sym->name);
857 break;
858 }
859 if (menu->list) {
860 bits <<= 1;
861 menu = menu->list;
862 if (menu->next)
863 bits |= 1;
864 else
865 bits &= ~1;
866 indent++;
867 continue;
868 }
869
870 while (menu && !menu->next) {
871 menu = menu->parent;
872 bits >>= 1;
873 indent--;
874 }
875
876 if (menu) {
877 menu = menu->next;
878 if (menu->next)
879 bits |= 1;
880 else
881 bits &= ~1;
882 }
883 }
884}