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