1
2
3
4
5
6#include <ctype.h>
7#include <stdarg.h>
8#include <stdlib.h>
9#include <string.h>
10
11#include "lkc.h"
12
13static const char nohelp_text[] = "There is no help available for this option.";
14
15struct menu rootmenu;
16static struct menu **last_entry_ptr;
17
18struct file *file_list;
19struct file *current_file;
20
21void 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
31static 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
41void _menu_init(void)
42{
43 current_entry = current_menu = &rootmenu;
44 last_entry_ptr = &rootmenu.list;
45}
46
47void 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
65void menu_end_entry(void)
66{
67}
68
69struct menu *menu_add_menu(void)
70{
71 menu_end_entry();
72 last_entry_ptr = ¤t_entry->list;
73 return current_menu = current_entry;
74}
75
76void menu_end_menu(void)
77{
78 last_entry_ptr = ¤t_menu->next;
79 current_menu = current_menu->parent;
80}
81
82static struct expr *menu_check_dep(struct expr *e)
83{
84 if (!e)
85 return e;
86
87 switch (e->type) {
88 case E_NOT:
89 e->left.expr = menu_check_dep(e->left.expr);
90 break;
91 case E_OR:
92 case E_AND:
93 e->left.expr = menu_check_dep(e->left.expr);
94 e->right.expr = menu_check_dep(e->right.expr);
95 break;
96 case E_SYMBOL:
97
98 if (e->left.sym == &symbol_mod)
99 return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
100 break;
101 default:
102 break;
103 }
104 return e;
105}
106
107void menu_add_dep(struct expr *dep)
108{
109 current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
110}
111
112void menu_set_type(int type)
113{
114 struct symbol *sym = current_entry->sym;
115
116 if (sym->type == type)
117 return;
118 if (sym->type == S_UNKNOWN) {
119 sym->type = type;
120 return;
121 }
122 menu_warn(current_entry,
123 "ignoring type redefinition of '%s' from '%s' to '%s'",
124 sym->name ? sym->name : "<choice>",
125 sym_type_name(sym->type), sym_type_name(type));
126}
127
128static struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
129{
130 struct property *prop = prop_alloc(type, current_entry->sym);
131
132 prop->menu = current_entry;
133 prop->expr = expr;
134 prop->visible.expr = menu_check_dep(dep);
135
136 if (prompt) {
137 if (isspace(*prompt)) {
138 prop_warn(prop, "leading whitespace ignored");
139 while (isspace(*prompt))
140 prompt++;
141 }
142 if (current_entry->prompt && current_entry != &rootmenu)
143 prop_warn(prop, "prompt redefined");
144
145
146 if(type == P_PROMPT) {
147 struct menu *menu = current_entry;
148
149 while ((menu = menu->parent) != NULL) {
150 struct expr *dup_expr;
151
152 if (!menu->visibility)
153 continue;
154
155
156
157
158
159
160
161
162
163 dup_expr = expr_copy(menu->visibility);
164
165 prop->visible.expr
166 = expr_alloc_and(prop->visible.expr,
167 dup_expr);
168 }
169 }
170
171 current_entry->prompt = prop;
172 }
173 prop->text = prompt;
174
175 return prop;
176}
177
178struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
179{
180 return menu_add_prop(type, prompt, NULL, dep);
181}
182
183void menu_add_visibility(struct expr *expr)
184{
185 current_entry->visibility = expr_alloc_and(current_entry->visibility,
186 expr);
187}
188
189void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
190{
191 menu_add_prop(type, NULL, expr, dep);
192}
193
194void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
195{
196 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
197}
198
199void menu_add_option(int token, char *arg)
200{
201 switch (token) {
202 case T_OPT_MODULES:
203 if (modules_sym)
204 zconf_error("symbol '%s' redefines option 'modules'"
205 " already defined by symbol '%s'",
206 current_entry->sym->name,
207 modules_sym->name
208 );
209 modules_sym = current_entry->sym;
210 break;
211 case T_OPT_DEFCONFIG_LIST:
212 if (!sym_defconfig_list)
213 sym_defconfig_list = current_entry->sym;
214 else if (sym_defconfig_list != current_entry->sym)
215 zconf_error("trying to redefine defconfig symbol");
216 break;
217 case T_OPT_ENV:
218 prop_add_env(arg);
219 break;
220 case T_OPT_ALLNOCONFIG_Y:
221 current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
222 break;
223 }
224}
225
226static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
227{
228 return sym2->type == S_INT || sym2->type == S_HEX ||
229 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
230}
231
232static void sym_check_prop(struct symbol *sym)
233{
234 struct property *prop;
235 struct symbol *sym2;
236 char *use;
237
238 for (prop = sym->prop; prop; prop = prop->next) {
239 switch (prop->type) {
240 case P_DEFAULT:
241 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
242 prop->expr->type != E_SYMBOL)
243 prop_warn(prop,
244 "default for config symbol '%s'"
245 " must be a single symbol", sym->name);
246 if (prop->expr->type != E_SYMBOL)
247 break;
248 sym2 = prop_get_symbol(prop);
249 if (sym->type == S_HEX || sym->type == S_INT) {
250 if (!menu_validate_number(sym, sym2))
251 prop_warn(prop,
252 "'%s': number is invalid",
253 sym->name);
254 }
255 break;
256 case P_SELECT:
257 case P_IMPLY:
258 use = prop->type == P_SELECT ? "select" : "imply";
259 sym2 = prop_get_symbol(prop);
260 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
261 prop_warn(prop,
262 "config symbol '%s' uses %s, but is "
263 "not boolean or tristate", sym->name, use);
264 else if (sym2->type != S_UNKNOWN &&
265 sym2->type != S_BOOLEAN &&
266 sym2->type != S_TRISTATE)
267 prop_warn(prop,
268 "'%s' has wrong type. '%s' only "
269 "accept arguments of boolean and "
270 "tristate type", sym2->name, use);
271 break;
272 case P_RANGE:
273 if (sym->type != S_INT && sym->type != S_HEX)
274 prop_warn(prop, "range is only allowed "
275 "for int or hex symbols");
276 if (!menu_validate_number(sym, prop->expr->left.sym) ||
277 !menu_validate_number(sym, prop->expr->right.sym))
278 prop_warn(prop, "range is invalid");
279 break;
280 default:
281 ;
282 }
283 }
284}
285
286void menu_finalize(struct menu *parent)
287{
288 struct menu *menu, *last_menu;
289 struct symbol *sym;
290 struct property *prop;
291 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
292
293 sym = parent->sym;
294 if (parent->list) {
295 if (sym && sym_is_choice(sym)) {
296 if (sym->type == S_UNKNOWN) {
297
298 current_entry = parent;
299 for (menu = parent->list; menu; menu = menu->next) {
300 if (menu->sym && menu->sym->type != S_UNKNOWN) {
301 menu_set_type(menu->sym->type);
302 break;
303 }
304 }
305 }
306
307 for (menu = parent->list; menu; menu = menu->next) {
308 current_entry = menu;
309 if (menu->sym && menu->sym->type == S_UNKNOWN)
310 menu_set_type(sym->type);
311 }
312 parentdep = expr_alloc_symbol(sym);
313 } else if (parent->prompt)
314 parentdep = parent->prompt->visible.expr;
315 else
316 parentdep = parent->dep;
317
318 for (menu = parent->list; menu; menu = menu->next) {
319 basedep = expr_transform(menu->dep);
320 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
321 basedep = expr_eliminate_dups(basedep);
322 menu->dep = basedep;
323 if (menu->sym)
324 prop = menu->sym->prop;
325 else
326 prop = menu->prompt;
327 for (; prop; prop = prop->next) {
328 if (prop->menu != menu)
329 continue;
330 dep = expr_transform(prop->visible.expr);
331 dep = expr_alloc_and(expr_copy(basedep), dep);
332 dep = expr_eliminate_dups(dep);
333 if (menu->sym && menu->sym->type != S_TRISTATE)
334 dep = expr_trans_bool(dep);
335 prop->visible.expr = dep;
336 if (prop->type == P_SELECT) {
337 struct symbol *es = prop_get_symbol(prop);
338 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
339 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
340 } else if (prop->type == P_IMPLY) {
341 struct symbol *es = prop_get_symbol(prop);
342 es->implied.expr = expr_alloc_or(es->implied.expr,
343 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
344 }
345 }
346 }
347 for (menu = parent->list; menu; menu = menu->next)
348 menu_finalize(menu);
349 } else if (sym) {
350 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
351 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
352 basedep = expr_eliminate_dups(expr_transform(basedep));
353 last_menu = NULL;
354 for (menu = parent->next; menu; menu = menu->next) {
355 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
356 if (!expr_contains_symbol(dep, sym))
357 break;
358 if (expr_depends_symbol(dep, sym))
359 goto next;
360 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
361 dep = expr_eliminate_dups(expr_transform(dep));
362 dep2 = expr_copy(basedep);
363 expr_eliminate_eq(&dep, &dep2);
364 expr_free(dep);
365 if (!expr_is_yes(dep2)) {
366 expr_free(dep2);
367 break;
368 }
369 expr_free(dep2);
370 next:
371 menu_finalize(menu);
372 menu->parent = parent;
373 last_menu = menu;
374 }
375 if (last_menu) {
376 parent->list = parent->next;
377 parent->next = last_menu->next;
378 last_menu->next = NULL;
379 }
380
381 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
382 }
383 for (menu = parent->list; menu; menu = menu->next) {
384 if (sym && sym_is_choice(sym) &&
385 menu->sym && !sym_is_choice_value(menu->sym)) {
386 current_entry = menu;
387 menu->sym->flags |= SYMBOL_CHOICEVAL;
388 if (!menu->prompt)
389 menu_warn(menu, "choice value must have a prompt");
390 for (prop = menu->sym->prop; prop; prop = prop->next) {
391 if (prop->type == P_DEFAULT)
392 prop_warn(prop, "defaults for choice "
393 "values not supported");
394 if (prop->menu == menu)
395 continue;
396 if (prop->type == P_PROMPT &&
397 prop->menu->parent->sym != sym)
398 prop_warn(prop, "choice value used outside its choice group");
399 }
400
401
402
403
404
405
406 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
407 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
408 menu->dep = expr_alloc_and(basedep, menu->dep);
409 for (prop = menu->sym->prop; prop; prop = prop->next) {
410 if (prop->menu != menu)
411 continue;
412 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
413 prop->visible.expr);
414 }
415 }
416 menu_add_symbol(P_CHOICE, sym, NULL);
417 prop = sym_get_choice_prop(sym);
418 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
419 ;
420 *ep = expr_alloc_one(E_LIST, NULL);
421 (*ep)->right.sym = menu->sym;
422 }
423 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
424 for (last_menu = menu->list; ; last_menu = last_menu->next) {
425 last_menu->parent = parent;
426 if (!last_menu->next)
427 break;
428 }
429 last_menu->next = menu->next;
430 menu->next = menu->list;
431 menu->list = NULL;
432 }
433 }
434
435 if (sym && !(sym->flags & SYMBOL_WARNED)) {
436 if (sym->type == S_UNKNOWN)
437 menu_warn(parent, "config symbol defined without type");
438
439 if (sym_is_choice(sym) && !parent->prompt)
440 menu_warn(parent, "choice must have a prompt");
441
442
443 sym_check_prop(sym);
444 sym->flags |= SYMBOL_WARNED;
445 }
446
447 if (sym && !sym_is_optional(sym) && parent->prompt) {
448 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
449 expr_alloc_and(parent->prompt->visible.expr,
450 expr_alloc_symbol(&symbol_mod)));
451 }
452}
453
454bool menu_has_prompt(struct menu *menu)
455{
456 if (!menu->prompt)
457 return false;
458 return true;
459}
460
461
462
463
464
465
466bool menu_is_empty(struct menu *menu)
467{
468 struct menu *child;
469
470 for (child = menu->list; child; child = child->next) {
471 if (menu_is_visible(child))
472 return(false);
473 }
474 return(true);
475}
476
477bool menu_is_visible(struct menu *menu)
478{
479 struct menu *child;
480 struct symbol *sym;
481 tristate visible;
482
483 if (!menu->prompt)
484 return false;
485
486 if (menu->visibility) {
487 if (expr_calc_value(menu->visibility) == no)
488 return false;
489 }
490
491 sym = menu->sym;
492 if (sym) {
493 sym_calc_value(sym);
494 visible = menu->prompt->visible.tri;
495 } else
496 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
497
498 if (visible != no)
499 return true;
500
501 if (!sym || sym_get_tristate_value(menu->sym) == no)
502 return false;
503
504 for (child = menu->list; child; child = child->next) {
505 if (menu_is_visible(child)) {
506 if (sym)
507 sym->flags |= SYMBOL_DEF_USER;
508 return true;
509 }
510 }
511
512 return false;
513}
514
515const char *menu_get_prompt(struct menu *menu)
516{
517 if (menu->prompt)
518 return menu->prompt->text;
519 else if (menu->sym)
520 return menu->sym->name;
521 return NULL;
522}
523
524struct menu *menu_get_root_menu(struct menu *menu)
525{
526 return &rootmenu;
527}
528
529struct menu *menu_get_parent_menu(struct menu *menu)
530{
531 enum prop_type type;
532
533 for (; menu != &rootmenu; menu = menu->parent) {
534 type = menu->prompt ? menu->prompt->type : 0;
535 if (type == P_MENU)
536 break;
537 }
538 return menu;
539}
540
541bool menu_has_help(struct menu *menu)
542{
543 return menu->help != NULL;
544}
545
546const char *menu_get_help(struct menu *menu)
547{
548 if (menu->help)
549 return menu->help;
550 else
551 return "";
552}
553
554static void get_prompt_str(struct gstr *r, struct property *prop,
555 struct list_head *head)
556{
557 int i, j;
558 struct menu *submenu[8], *menu, *location = NULL;
559 struct jump_key *jump = NULL;
560
561 str_printf(r, _("Prompt: %s\n"), _(prop->text));
562 menu = prop->menu->parent;
563 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
564 bool accessible = menu_is_visible(menu);
565
566 submenu[i++] = menu;
567 if (location == NULL && accessible)
568 location = menu;
569 }
570 if (head && location) {
571 jump = xmalloc(sizeof(struct jump_key));
572
573 if (menu_is_visible(prop->menu)) {
574
575
576
577
578
579
580 jump->target = prop->menu;
581 } else
582 jump->target = location;
583
584 if (list_empty(head))
585 jump->index = 0;
586 else
587 jump->index = list_entry(head->prev, struct jump_key,
588 entries)->index + 1;
589
590 list_add_tail(&jump->entries, head);
591 }
592
593 if (i > 0) {
594 str_printf(r, _(" Location:\n"));
595 for (j = 4; --i >= 0; j += 2) {
596 menu = submenu[i];
597 if (jump && menu == location)
598 jump->offset = strlen(r->s);
599 str_printf(r, "%*c-> %s", j, ' ',
600 _(menu_get_prompt(menu)));
601 if (menu->sym) {
602 str_printf(r, " (%s [=%s])", menu->sym->name ?
603 menu->sym->name : _("<choice>"),
604 sym_get_string_value(menu->sym));
605 }
606 str_append(r, "\n");
607 }
608 }
609}
610
611
612
613
614static struct property *get_symbol_prop(struct symbol *sym)
615{
616 struct property *prop = NULL;
617
618 for_all_properties(sym, prop, P_SYMBOL)
619 break;
620 return prop;
621}
622
623static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
624 enum prop_type tok, const char *prefix)
625{
626 bool hit = false;
627 struct property *prop;
628
629 for_all_properties(sym, prop, tok) {
630 if (!hit) {
631 str_append(r, prefix);
632 hit = true;
633 } else
634 str_printf(r, " && ");
635 expr_gstr_print(prop->expr, r);
636 }
637 if (hit)
638 str_append(r, "\n");
639}
640
641
642
643
644static void get_symbol_str(struct gstr *r, struct symbol *sym,
645 struct list_head *head)
646{
647 struct property *prop;
648
649 if (sym && sym->name) {
650 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
651 sym_get_string_value(sym));
652 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
653 if (sym->type == S_INT || sym->type == S_HEX) {
654 prop = sym_get_range_prop(sym);
655 if (prop) {
656 str_printf(r, "Range : ");
657 expr_gstr_print(prop->expr, r);
658 str_append(r, "\n");
659 }
660 }
661 }
662 for_all_prompts(sym, prop)
663 get_prompt_str(r, prop, head);
664
665 prop = get_symbol_prop(sym);
666 if (prop) {
667 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
668 prop->menu->lineno);
669 if (!expr_is_yes(prop->visible.expr)) {
670 str_append(r, _(" Depends on: "));
671 expr_gstr_print(prop->visible.expr, r);
672 str_append(r, "\n");
673 }
674 }
675
676 get_symbol_props_str(r, sym, P_SELECT, _(" Selects: "));
677 if (sym->rev_dep.expr) {
678 str_append(r, _(" Selected by: "));
679 expr_gstr_print(sym->rev_dep.expr, r);
680 str_append(r, "\n");
681 }
682
683 get_symbol_props_str(r, sym, P_IMPLY, _(" Implies: "));
684 if (sym->implied.expr) {
685 str_append(r, _(" Implied by: "));
686 expr_gstr_print(sym->implied.expr, r);
687 str_append(r, "\n");
688 }
689
690 str_append(r, "\n\n");
691}
692
693struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
694{
695 struct symbol *sym;
696 struct gstr res = str_new();
697 int i;
698
699 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
700 get_symbol_str(&res, sym, head);
701 if (!i)
702 str_append(&res, _("No matches found.\n"));
703 return res;
704}
705
706
707void menu_get_ext_help(struct menu *menu, struct gstr *help)
708{
709 struct symbol *sym = menu->sym;
710 const char *help_text = nohelp_text;
711
712 if (menu_has_help(menu)) {
713 if (sym->name)
714 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
715 help_text = menu_get_help(menu);
716 }
717 str_printf(help, "%s\n", _(help_text));
718 if (sym)
719 get_symbol_str(help, sym, NULL);
720}
721
