1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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
16 static const char nohelp_text[] = "There is no help available for this option.";
17
18 struct menu rootmenu = { .type = M_MENU };
19 static 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 */
menu_next(struct menu * menu,struct menu * root)28 struct 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
menu_warn(const struct menu * menu,const char * fmt,...)42 void 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
prop_warn(const struct property * prop,const char * fmt,...)52 static 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
_menu_init(void)62 void _menu_init(void)
63 {
64 current_entry = current_menu = &rootmenu;
65 last_entry_ptr = &rootmenu.list;
66 }
67
menu_add_entry(struct symbol * sym,enum menu_type type)68 void 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
menu_add_menu(void)87 struct menu *menu_add_menu(void)
88 {
89 last_entry_ptr = ¤t_entry->list;
90 current_menu = current_entry;
91 return current_menu;
92 }
93
menu_end_menu(void)94 void menu_end_menu(void)
95 {
96 last_entry_ptr = ¤t_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 */
rewrite_m(struct expr * e)104 static 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
menu_add_dep(struct expr * dep,struct expr * cond)130 void 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
menu_set_type(int type)145 void 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
menu_add_prop(enum prop_type type,struct expr * expr,struct expr * dep)161 static 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 = ¤t_entry->sym->prop;
180 *propp;
181 propp = &(*propp)->next)
182 ;
183 *propp = prop;
184 }
185
186 return prop;
187 }
188
menu_add_prompt(enum prop_type type,const char * prompt,struct expr * dep)189 struct 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
menu_add_visibility(struct expr * expr)221 void menu_add_visibility(struct expr *expr)
222 {
223 current_entry->visibility = expr_alloc_and(current_entry->visibility,
224 expr);
225 }
226
menu_add_expr(enum prop_type type,struct expr * expr,struct expr * dep)227 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
228 {
229 menu_add_prop(type, expr, dep);
230 }
231
menu_add_symbol(enum prop_type type,struct symbol * sym,struct expr * dep)232 void 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
menu_validate_number(struct symbol * sym,struct symbol * sym2)237 static 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
sym_check_prop(struct symbol * sym)243 static 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
_menu_finalize(struct menu * parent,bool inside_choice)305 static 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 if (expr_depends_symbol(dep, sym))
432 /* Absolute dependency, put in submenu */
433 goto next;
434
435 /*
436 * Also consider it a dependency on sym if our
437 * dependencies contain sym and are a "superset" of
438 * sym's dependencies, e.g. '(sym || Q) && R' when sym
439 * depends on R.
440 *
441 * Note that 'R' might be from an enclosing menu or if,
442 * making this a more common case than it might seem.
443 */
444 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
445 dep = expr_eliminate_dups(expr_transform(dep));
446 dep2 = basedep;
447 expr_eliminate_eq(&dep, &dep2);
448 if (!expr_is_yes(dep2)) {
449 /* Not superset, quit */
450 break;
451 }
452 /* Superset, put in submenu */
453 next:
454 _menu_finalize(menu, false);
455 menu->parent = parent;
456 last_menu = menu;
457 }
458 if (last_menu) {
459 parent->list = parent->next;
460 parent->next = last_menu->next;
461 last_menu->next = NULL;
462 }
463
464 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
465 }
466 for (menu = parent->list; menu; menu = menu->next) {
467 /*
468 * This code serves two purposes:
469 *
470 * (1) Flattening 'if' blocks, which do not specify a submenu
471 * and only add dependencies.
472 *
473 * (Automatic submenu creation might still create a submenu
474 * from an 'if' before this code runs.)
475 *
476 * (2) "Undoing" any automatic submenus created earlier below
477 * promptless symbols.
478 *
479 * Before:
480 *
481 * A
482 * if ... (or promptless symbol)
483 * +-B
484 * +-C
485 * D
486 *
487 * After:
488 *
489 * A
490 * if ... (or promptless symbol)
491 * B
492 * C
493 * D
494 */
495 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
496 for (last_menu = menu->list; ; last_menu = last_menu->next) {
497 last_menu->parent = parent;
498 if (!last_menu->next)
499 break;
500 }
501 last_menu->next = menu->next;
502 menu->next = menu->list;
503 menu->list = NULL;
504 }
505 }
506
507 if (sym && !(sym->flags & SYMBOL_WARNED)) {
508 if (sym->type == S_UNKNOWN)
509 menu_warn(parent, "config symbol defined without type");
510
511 /* Check properties connected to this symbol */
512 sym_check_prop(sym);
513 sym->flags |= SYMBOL_WARNED;
514 }
515 }
516
menu_finalize(void)517 void menu_finalize(void)
518 {
519 _menu_finalize(&rootmenu, false);
520 }
521
menu_has_prompt(const struct menu * menu)522 bool menu_has_prompt(const struct menu *menu)
523 {
524 if (!menu->prompt)
525 return false;
526 return true;
527 }
528
529 /*
530 * Determine if a menu is empty.
531 * A menu is considered empty if it contains no or only
532 * invisible entries.
533 */
menu_is_empty(struct menu * menu)534 bool menu_is_empty(struct menu *menu)
535 {
536 struct menu *child;
537
538 for (child = menu->list; child; child = child->next) {
539 if (menu_is_visible(child))
540 return(false);
541 }
542 return(true);
543 }
544
menu_is_visible(struct menu * menu)545 bool menu_is_visible(struct menu *menu)
546 {
547 struct menu *child;
548 struct symbol *sym;
549 tristate visible;
550
551 if (!menu->prompt)
552 return false;
553
554 if (menu->visibility) {
555 if (expr_calc_value(menu->visibility) == no)
556 return false;
557 }
558
559 sym = menu->sym;
560 if (sym) {
561 sym_calc_value(sym);
562 visible = menu->prompt->visible.tri;
563 } else
564 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
565
566 if (visible != no)
567 return true;
568
569 if (!sym || sym_get_tristate_value(menu->sym) == no)
570 return false;
571
572 for (child = menu->list; child; child = child->next)
573 if (menu_is_visible(child))
574 return true;
575
576 return false;
577 }
578
menu_get_prompt(const struct menu * menu)579 const char *menu_get_prompt(const struct menu *menu)
580 {
581 if (menu->prompt)
582 return menu->prompt->text;
583 else if (menu->sym)
584 return menu->sym->name;
585 return NULL;
586 }
587
588 /**
589 * menu_get_parent_menu - return the parent menu or NULL
590 * @menu: pointer to the menu
591 * return: the parent menu, or NULL if there is no parent.
592 */
menu_get_parent_menu(struct menu * menu)593 struct menu *menu_get_parent_menu(struct menu *menu)
594 {
595 for (menu = menu->parent; menu; menu = menu->parent)
596 if (menu->type == M_MENU)
597 return menu;
598
599 return NULL;
600 }
601
602 /**
603 * menu_get_menu_or_parent_menu - return the parent menu or the menu itself
604 * @menu: pointer to the menu
605 * return: the parent menu. If the given argument is already a menu, return
606 * itself.
607 */
menu_get_menu_or_parent_menu(struct menu * menu)608 struct menu *menu_get_menu_or_parent_menu(struct menu *menu)
609 {
610 enum prop_type type;
611
612 for (; menu != &rootmenu; menu = menu->parent) {
613 type = menu->prompt ? menu->prompt->type : 0;
614 if (type == P_MENU)
615 break;
616 }
617 return menu;
618 }
619
get_def_str(struct gstr * r,const struct menu * menu)620 static void get_def_str(struct gstr *r, const struct menu *menu)
621 {
622 str_printf(r, "Defined at %s:%d\n",
623 menu->filename, menu->lineno);
624 }
625
get_dep_str(struct gstr * r,const struct expr * expr,const char * prefix)626 static void get_dep_str(struct gstr *r, const struct expr *expr,
627 const char *prefix)
628 {
629 if (!expr_is_yes(expr)) {
630 str_append(r, prefix);
631 expr_gstr_print(expr, r);
632 str_append(r, "\n");
633 }
634 }
635
get_jump_key_char(void)636 int __attribute__((weak)) get_jump_key_char(void)
637 {
638 return -1;
639 }
640
get_prompt_str(struct gstr * r,struct property * prop,struct list_head * head)641 static void get_prompt_str(struct gstr *r, struct property *prop,
642 struct list_head *head)
643 {
644 int i, j;
645 struct menu *submenu[8], *menu, *location = NULL;
646 struct jump_key *jump = NULL;
647
648 str_printf(r, " Prompt: %s\n", prop->text);
649
650 get_dep_str(r, prop->menu->dep, " Depends on: ");
651 /*
652 * Most prompts in Linux have visibility that exactly matches their
653 * dependencies. For these, we print only the dependencies to improve
654 * readability. However, prompts with inline "if" expressions and
655 * prompts with a parent that has a "visible if" expression have
656 * differing dependencies and visibility. In these rare cases, we
657 * print both.
658 */
659 if (!expr_eq(prop->menu->dep, prop->visible.expr))
660 get_dep_str(r, prop->visible.expr, " Visible if: ");
661
662 menu = prop->menu;
663 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
664 submenu[i++] = menu;
665 if (location == NULL && menu_is_visible(menu))
666 location = menu;
667 }
668 if (head && location) {
669 jump = xmalloc(sizeof(struct jump_key));
670 jump->target = location;
671 list_add_tail(&jump->entries, head);
672 }
673
674 str_printf(r, " Location:\n");
675 for (j = 0; --i >= 0; j++) {
676 int jk = -1;
677 int indent = 2 * j + 4;
678
679 menu = submenu[i];
680 if (jump && menu == location) {
681 jump->offset = strlen(r->s);
682 jk = get_jump_key_char();
683 }
684
685 if (jk >= 0) {
686 str_printf(r, "(%c)", jk);
687 indent -= 3;
688 }
689
690 str_printf(r, "%*c-> %s", indent, ' ', menu_get_prompt(menu));
691 if (menu->sym) {
692 str_printf(r, " (%s [=%s])", menu->sym->name ?
693 menu->sym->name : "<choice>",
694 sym_get_string_value(menu->sym));
695 }
696 str_append(r, "\n");
697 }
698 }
699
get_symbol_props_str(struct gstr * r,struct symbol * sym,enum prop_type tok,const char * prefix)700 static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
701 enum prop_type tok, const char *prefix)
702 {
703 bool hit = false;
704 struct property *prop;
705
706 for_all_properties(sym, prop, tok) {
707 if (!hit) {
708 str_append(r, prefix);
709 hit = true;
710 } else
711 str_printf(r, " && ");
712 expr_gstr_print(prop->expr, r);
713 }
714 if (hit)
715 str_append(r, "\n");
716 }
717
718 /*
719 * head is optional and may be NULL
720 */
get_symbol_str(struct gstr * r,struct symbol * sym,struct list_head * head)721 static void get_symbol_str(struct gstr *r, struct symbol *sym,
722 struct list_head *head)
723 {
724 struct property *prop;
725 struct menu *menu;
726
727 if (sym && sym->name) {
728 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
729 sym_get_string_value(sym));
730 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
731 if (sym->type == S_INT || sym->type == S_HEX) {
732 prop = sym_get_range_prop(sym);
733 if (prop) {
734 str_printf(r, "Range : ");
735 expr_gstr_print(prop->expr, r);
736 str_append(r, "\n");
737 }
738 }
739 }
740
741 /* Print the definitions with prompts before the ones without */
742 list_for_each_entry(menu, &sym->menus, link) {
743 if (menu->prompt) {
744 get_def_str(r, menu);
745 get_prompt_str(r, menu->prompt, head);
746 }
747 }
748
749 list_for_each_entry(menu, &sym->menus, link) {
750 if (!menu->prompt) {
751 get_def_str(r, menu);
752 get_dep_str(r, menu->dep, " Depends on: ");
753 }
754 }
755
756 get_symbol_props_str(r, sym, P_SELECT, "Selects: ");
757 if (sym->rev_dep.expr) {
758 expr_gstr_print_revdep(sym->rev_dep.expr, r, yes, "Selected by [y]:\n");
759 expr_gstr_print_revdep(sym->rev_dep.expr, r, mod, "Selected by [m]:\n");
760 expr_gstr_print_revdep(sym->rev_dep.expr, r, no, "Selected by [n]:\n");
761 }
762
763 get_symbol_props_str(r, sym, P_IMPLY, "Implies: ");
764 if (sym->implied.expr) {
765 expr_gstr_print_revdep(sym->implied.expr, r, yes, "Implied by [y]:\n");
766 expr_gstr_print_revdep(sym->implied.expr, r, mod, "Implied by [m]:\n");
767 expr_gstr_print_revdep(sym->implied.expr, r, no, "Implied by [n]:\n");
768 }
769
770 str_append(r, "\n\n");
771 }
772
get_relations_str(struct symbol ** sym_arr,struct list_head * head)773 struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
774 {
775 struct symbol *sym;
776 struct gstr res = str_new();
777 int i;
778
779 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
780 get_symbol_str(&res, sym, head);
781 if (!i)
782 str_append(&res, "No matches found.\n");
783 return res;
784 }
785
786
menu_get_ext_help(struct menu * menu,struct gstr * help)787 void menu_get_ext_help(struct menu *menu, struct gstr *help)
788 {
789 struct symbol *sym = menu->sym;
790 const char *help_text = nohelp_text;
791
792 if (menu->help) {
793 if (sym->name)
794 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
795 help_text = menu->help;
796 }
797 str_printf(help, "%s\n", help_text);
798 if (sym)
799 get_symbol_str(help, sym, NULL);
800 }
801
802 /**
803 * menu_dump - dump all menu entries in a tree-like format
804 */
menu_dump(void)805 void menu_dump(void)
806 {
807 struct menu *menu = &rootmenu;
808 unsigned long long bits = 0;
809 int indent = 0;
810
811 while (menu) {
812
813 for (int i = indent - 1; i >= 0; i--) {
814 if (bits & (1ULL << i)) {
815 if (i > 0)
816 printf("| ");
817 else
818 printf("|-- ");
819 } else {
820 if (i > 0)
821 printf(" ");
822 else
823 printf("`-- ");
824 }
825 }
826
827 switch (menu->type) {
828 case M_CHOICE:
829 printf("choice \"%s\"\n", menu->prompt->text);
830 break;
831 case M_COMMENT:
832 printf("comment \"%s\"\n", menu->prompt->text);
833 break;
834 case M_IF:
835 printf("if\n");
836 break;
837 case M_MENU:
838 printf("menu \"%s\"", menu->prompt->text);
839 if (!menu->sym) {
840 printf("\n");
841 break;
842 }
843 printf(" + ");
844 /* fallthrough */
845 case M_NORMAL:
846 printf("symbol %s\n", menu->sym->name);
847 break;
848 }
849 if (menu->list) {
850 bits <<= 1;
851 menu = menu->list;
852 if (menu->next)
853 bits |= 1;
854 else
855 bits &= ~1;
856 indent++;
857 continue;
858 }
859
860 while (menu && !menu->next) {
861 menu = menu->parent;
862 bits >>= 1;
863 indent--;
864 }
865
866 if (menu) {
867 menu = menu->next;
868 if (menu->next)
869 bits |= 1;
870 else
871 bits &= ~1;
872 }
873 }
874 }
875