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