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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, "type of '%s' redefined from '%s' to '%s'",
123 sym->name ? sym->name : "<choice>",
124 sym_type_name(sym->type), sym_type_name(type));
125}
126
127struct 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 = menu_check_dep(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
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
155
156
157
158
159
160
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
177struct 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
182void menu_add_visibility(struct expr *expr)
183{
184 current_entry->visibility = expr_alloc_and(current_entry->visibility,
185 expr);
186}
187
188void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
189{
190 menu_add_prop(type, NULL, expr, dep);
191}
192
193void 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
198void menu_add_option(int token, char *arg)
199{
200 struct property *prop;
201
202 switch (token) {
203 case T_OPT_MODULES:
204 prop = prop_alloc(P_DEFAULT, modules_sym);
205 prop->expr = expr_alloc_symbol(current_entry->sym);
206 break;
207 case T_OPT_DEFCONFIG_LIST:
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 break;
213 case T_OPT_ENV:
214 prop_add_env(arg);
215 break;
216 }
217}
218
219static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
220{
221 return sym2->type == S_INT || sym2->type == S_HEX ||
222 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
223}
224
225static void sym_check_prop(struct symbol *sym)
226{
227 struct property *prop;
228 struct symbol *sym2;
229 for (prop = sym->prop; prop; prop = prop->next) {
230 switch (prop->type) {
231 case P_DEFAULT:
232 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
233 prop->expr->type != E_SYMBOL)
234 prop_warn(prop,
235 "default for config symbol '%s'"
236 " must be a single symbol", sym->name);
237 if (prop->expr->type != E_SYMBOL)
238 break;
239 sym2 = prop_get_symbol(prop);
240 if (sym->type == S_HEX || sym->type == S_INT) {
241 if (!menu_validate_number(sym, sym2))
242 prop_warn(prop,
243 "'%s': number is invalid",
244 sym->name);
245 }
246 break;
247 case P_SELECT:
248 sym2 = prop_get_symbol(prop);
249 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
250 prop_warn(prop,
251 "config symbol '%s' uses select, but is "
252 "not boolean or tristate", sym->name);
253 else if (sym2->type != S_UNKNOWN &&
254 sym2->type != S_BOOLEAN &&
255 sym2->type != S_TRISTATE)
256 prop_warn(prop,
257 "'%s' has wrong type. 'select' only "
258 "accept arguments of boolean and "
259 "tristate type", sym2->name);
260 break;
261 case P_RANGE:
262 if (sym->type != S_INT && sym->type != S_HEX)
263 prop_warn(prop, "range is only allowed "
264 "for int or hex symbols");
265 if (!menu_validate_number(sym, prop->expr->left.sym) ||
266 !menu_validate_number(sym, prop->expr->right.sym))
267 prop_warn(prop, "range is invalid");
268 break;
269 default:
270 ;
271 }
272 }
273}
274
275void menu_finalize(struct menu *parent)
276{
277 struct menu *menu, *last_menu;
278 struct symbol *sym;
279 struct property *prop;
280 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
281
282 sym = parent->sym;
283 if (parent->list) {
284 if (sym && sym_is_choice(sym)) {
285 if (sym->type == S_UNKNOWN) {
286
287 current_entry = parent;
288 for (menu = parent->list; menu; menu = menu->next) {
289 if (menu->sym && menu->sym->type != S_UNKNOWN) {
290 menu_set_type(menu->sym->type);
291 break;
292 }
293 }
294 }
295
296 for (menu = parent->list; menu; menu = menu->next) {
297 current_entry = menu;
298 if (menu->sym && menu->sym->type == S_UNKNOWN)
299 menu_set_type(sym->type);
300 }
301 parentdep = expr_alloc_symbol(sym);
302 } else if (parent->prompt)
303 parentdep = parent->prompt->visible.expr;
304 else
305 parentdep = parent->dep;
306
307 for (menu = parent->list; menu; menu = menu->next) {
308 basedep = expr_transform(menu->dep);
309 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
310 basedep = expr_eliminate_dups(basedep);
311 menu->dep = basedep;
312 if (menu->sym)
313 prop = menu->sym->prop;
314 else
315 prop = menu->prompt;
316 for (; prop; prop = prop->next) {
317 if (prop->menu != menu)
318 continue;
319 dep = expr_transform(prop->visible.expr);
320 dep = expr_alloc_and(expr_copy(basedep), dep);
321 dep = expr_eliminate_dups(dep);
322 if (menu->sym && menu->sym->type != S_TRISTATE)
323 dep = expr_trans_bool(dep);
324 prop->visible.expr = dep;
325 if (prop->type == P_SELECT) {
326 struct symbol *es = prop_get_symbol(prop);
327 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
328 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
329 }
330 }
331 }
332 for (menu = parent->list; menu; menu = menu->next)
333 menu_finalize(menu);
334 } else if (sym) {
335 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
336 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
337 basedep = expr_eliminate_dups(expr_transform(basedep));
338 last_menu = NULL;
339 for (menu = parent->next; menu; menu = menu->next) {
340 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
341 if (!expr_contains_symbol(dep, sym))
342 break;
343 if (expr_depends_symbol(dep, sym))
344 goto next;
345 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
346 dep = expr_eliminate_dups(expr_transform(dep));
347 dep2 = expr_copy(basedep);
348 expr_eliminate_eq(&dep, &dep2);
349 expr_free(dep);
350 if (!expr_is_yes(dep2)) {
351 expr_free(dep2);
352 break;
353 }
354 expr_free(dep2);
355 next:
356 menu_finalize(menu);
357 menu->parent = parent;
358 last_menu = menu;
359 }
360 if (last_menu) {
361 parent->list = parent->next;
362 parent->next = last_menu->next;
363 last_menu->next = NULL;
364 }
365
366 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
367 }
368 for (menu = parent->list; menu; menu = menu->next) {
369 if (sym && sym_is_choice(sym) &&
370 menu->sym && !sym_is_choice_value(menu->sym)) {
371 current_entry = menu;
372 menu->sym->flags |= SYMBOL_CHOICEVAL;
373 if (!menu->prompt)
374 menu_warn(menu, "choice value must have a prompt");
375 for (prop = menu->sym->prop; prop; prop = prop->next) {
376 if (prop->type == P_DEFAULT)
377 prop_warn(prop, "defaults for choice "
378 "values not supported");
379 if (prop->menu == menu)
380 continue;
381 if (prop->type == P_PROMPT &&
382 prop->menu->parent->sym != sym)
383 prop_warn(prop, "choice value used outside its choice group");
384 }
385
386
387
388
389
390
391 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
392 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
393 menu->dep = expr_alloc_and(basedep, menu->dep);
394 for (prop = menu->sym->prop; prop; prop = prop->next) {
395 if (prop->menu != menu)
396 continue;
397 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
398 prop->visible.expr);
399 }
400 }
401 menu_add_symbol(P_CHOICE, sym, NULL);
402 prop = sym_get_choice_prop(sym);
403 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
404 ;
405 *ep = expr_alloc_one(E_LIST, NULL);
406 (*ep)->right.sym = menu->sym;
407 }
408 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
409 for (last_menu = menu->list; ; last_menu = last_menu->next) {
410 last_menu->parent = parent;
411 if (!last_menu->next)
412 break;
413 }
414 last_menu->next = menu->next;
415 menu->next = menu->list;
416 menu->list = NULL;
417 }
418 }
419
420 if (sym && !(sym->flags & SYMBOL_WARNED)) {
421 if (sym->type == S_UNKNOWN)
422 menu_warn(parent, "config symbol defined without type");
423
424 if (sym_is_choice(sym) && !parent->prompt)
425 menu_warn(parent, "choice must have a prompt");
426
427
428 sym_check_prop(sym);
429 sym->flags |= SYMBOL_WARNED;
430 }
431
432 if (sym && !sym_is_optional(sym) && parent->prompt) {
433 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
434 expr_alloc_and(parent->prompt->visible.expr,
435 expr_alloc_symbol(&symbol_mod)));
436 }
437}
438
439bool menu_has_prompt(struct menu *menu)
440{
441 if (!menu->prompt)
442 return false;
443 return true;
444}
445
446bool menu_is_visible(struct menu *menu)
447{
448 struct menu *child;
449 struct symbol *sym;
450 tristate visible;
451
452 if (!menu->prompt)
453 return false;
454
455 if (menu->visibility) {
456 if (expr_calc_value(menu->visibility) == no)
457 return no;
458 }
459
460 sym = menu->sym;
461 if (sym) {
462 sym_calc_value(sym);
463 visible = menu->prompt->visible.tri;
464 } else
465 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
466
467 if (visible != no)
468 return true;
469
470 if (!sym || sym_get_tristate_value(menu->sym) == no)
471 return false;
472
473 for (child = menu->list; child; child = child->next) {
474 if (menu_is_visible(child)) {
475 if (sym)
476 sym->flags |= SYMBOL_DEF_USER;
477 return true;
478 }
479 }
480
481 return false;
482}
483
484const char *menu_get_prompt(struct menu *menu)
485{
486 if (menu->prompt)
487 return menu->prompt->text;
488 else if (menu->sym)
489 return menu->sym->name;
490 return NULL;
491}
492
493struct menu *menu_get_root_menu(struct menu *menu)
494{
495 return &rootmenu;
496}
497
498struct menu *menu_get_parent_menu(struct menu *menu)
499{
500 enum prop_type type;
501
502 for (; menu != &rootmenu; menu = menu->parent) {
503 type = menu->prompt ? menu->prompt->type : 0;
504 if (type == P_MENU)
505 break;
506 }
507 return menu;
508}
509
510bool menu_has_help(struct menu *menu)
511{
512 return menu->help != NULL;
513}
514
515const char *menu_get_help(struct menu *menu)
516{
517 if (menu->help)
518 return menu->help;
519 else
520 return "";
521}
522
523static void get_prompt_str(struct gstr *r, struct property *prop,
524 struct list_head *head)
525{
526 int i, j;
527 struct menu *submenu[8], *menu, *location = NULL;
528 struct jump_key *jump = NULL;
529
530 str_printf(r, _("Prompt: %s\n"), _(prop->text));
531 menu = prop->menu->parent;
532 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
533 bool accessible = menu_is_visible(menu);
534
535 submenu[i++] = menu;
536 if (location == NULL && accessible)
537 location = menu;
538 }
539 if (head && location) {
540 jump = xmalloc(sizeof(struct jump_key));
541
542 if (menu_is_visible(prop->menu)) {
543
544
545
546
547
548
549 jump->target = prop->menu;
550 } else
551 jump->target = location;
552
553 if (list_empty(head))
554 jump->index = 0;
555 else
556 jump->index = list_entry(head->prev, struct jump_key,
557 entries)->index + 1;
558
559 list_add_tail(&jump->entries, head);
560 }
561
562 if (i > 0) {
563 str_printf(r, _(" Location:\n"));
564 for (j = 4; --i >= 0; j += 2) {
565 menu = submenu[i];
566 if (jump && menu == location)
567 jump->offset = r->len - 1;
568 str_printf(r, "%*c-> %s", j, ' ',
569 _(menu_get_prompt(menu)));
570 if (menu->sym) {
571 str_printf(r, " (%s [=%s])", menu->sym->name ?
572 menu->sym->name : _("<choice>"),
573 sym_get_string_value(menu->sym));
574 }
575 str_append(r, "\n");
576 }
577 }
578}
579
580
581
582
583static struct property *get_symbol_prop(struct symbol *sym)
584{
585 struct property *prop = NULL;
586
587 for_all_properties(sym, prop, P_SYMBOL)
588 break;
589 return prop;
590}
591
592
593
594
595void get_symbol_str(struct gstr *r, struct symbol *sym,
596 struct list_head *head)
597{
598 bool hit;
599 struct property *prop;
600
601 if (sym && sym->name) {
602 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
603 sym_get_string_value(sym));
604 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
605 if (sym->type == S_INT || sym->type == S_HEX) {
606 prop = sym_get_range_prop(sym);
607 if (prop) {
608 str_printf(r, "Range : ");
609 expr_gstr_print(prop->expr, r);
610 str_append(r, "\n");
611 }
612 }
613 }
614 for_all_prompts(sym, prop)
615 get_prompt_str(r, prop, head);
616
617 prop = get_symbol_prop(sym);
618 if (prop) {
619 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
620 prop->menu->lineno);
621 if (!expr_is_yes(prop->visible.expr)) {
622 str_append(r, _(" Depends on: "));
623 expr_gstr_print(prop->visible.expr, r);
624 str_append(r, "\n");
625 }
626 }
627
628 hit = false;
629 for_all_properties(sym, prop, P_SELECT) {
630 if (!hit) {
631 str_append(r, " Selects: ");
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 if (sym->rev_dep.expr) {
640 str_append(r, _(" Selected by: "));
641 expr_gstr_print(sym->rev_dep.expr, r);
642 str_append(r, "\n");
643 }
644 str_append(r, "\n\n");
645}
646
647struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
648{
649 struct symbol *sym;
650 struct gstr res = str_new();
651 int i;
652
653 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
654 get_symbol_str(&res, sym, head);
655 if (!i)
656 str_append(&res, _("No matches found.\n"));
657 return res;
658}
659
660
661void menu_get_ext_help(struct menu *menu, struct gstr *help)
662{
663 struct symbol *sym = menu->sym;
664 const char *help_text = nohelp_text;
665
666 if (menu_has_help(menu)) {
667 if (sym->name)
668 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
669 help_text = menu_get_help(menu);
670 }
671 str_printf(help, "%s\n", _(help_text));
672 if (sym)
673 get_symbol_str(help, sym, NULL);
674}
675
