projects/linux·blob v3.2 · refs

607 lines · 14.9 KiB

1/*
2 * Copyright (C) 2002 Roman Zippel <[email protected]>
3 * Released under the terms of the GNU GPL v2.0.
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 = malloc(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 = &current_entry->list;
73 return current_menu = current_entry;
74}
75
76void menu_end_menu(void)
77{
78 last_entry_ptr = &current_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 /* change 'm' into 'm' && MODULES */
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 /* 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 if (!menu->visibility)
150 continue;
151 prop->visible.expr
152 = expr_alloc_and(prop->visible.expr,
153 menu->visibility);
154 }
155 }
156
157 current_entry->prompt = prop;
158 }
159 prop->text = prompt;
160
161 return prop;
162}
163
164struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
165{
166 return menu_add_prop(type, prompt, NULL, dep);
167}
168
169void menu_add_visibility(struct expr *expr)
170{
171 current_entry->visibility = expr_alloc_and(current_entry->visibility,
172 expr);
173}
174
175void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
176{
177 menu_add_prop(type, NULL, expr, dep);
178}
179
180void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
181{
182 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
183}
184
185void menu_add_option(int token, char *arg)
186{
187 struct property *prop;
188
189 switch (token) {
190 case T_OPT_MODULES:
191 prop = prop_alloc(P_DEFAULT, modules_sym);
192 prop->expr = expr_alloc_symbol(current_entry->sym);
193 break;
194 case T_OPT_DEFCONFIG_LIST:
195 if (!sym_defconfig_list)
196 sym_defconfig_list = current_entry->sym;
197 else if (sym_defconfig_list != current_entry->sym)
198 zconf_error("trying to redefine defconfig symbol");
199 break;
200 case T_OPT_ENV:
201 prop_add_env(arg);
202 break;
203 }
204}
205
206static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
207{
208 return sym2->type == S_INT || sym2->type == S_HEX ||
209 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
210}
211
212static void sym_check_prop(struct symbol *sym)
213{
214 struct property *prop;
215 struct symbol *sym2;
216 for (prop = sym->prop; prop; prop = prop->next) {
217 switch (prop->type) {
218 case P_DEFAULT:
219 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
220 prop->expr->type != E_SYMBOL)
221 prop_warn(prop,
222 "default for config symbol '%s'"
223 " must be a single symbol", sym->name);
224 if (prop->expr->type != E_SYMBOL)
225 break;
226 sym2 = prop_get_symbol(prop);
227 if (sym->type == S_HEX || sym->type == S_INT) {
228 if (!menu_validate_number(sym, sym2))
229 prop_warn(prop,
230 "'%s': number is invalid",
231 sym->name);
232 }
233 break;
234 case P_SELECT:
235 sym2 = prop_get_symbol(prop);
236 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
237 prop_warn(prop,
238 "config symbol '%s' uses select, but is "
239 "not boolean or tristate", sym->name);
240 else if (sym2->type != S_UNKNOWN &&
241 sym2->type != S_BOOLEAN &&
242 sym2->type != S_TRISTATE)
243 prop_warn(prop,
244 "'%s' has wrong type. 'select' only "
245 "accept arguments of boolean and "
246 "tristate type", sym2->name);
247 break;
248 case P_RANGE:
249 if (sym->type != S_INT && sym->type != S_HEX)
250 prop_warn(prop, "range is only allowed "
251 "for int or hex symbols");
252 if (!menu_validate_number(sym, prop->expr->left.sym) ||
253 !menu_validate_number(sym, prop->expr->right.sym))
254 prop_warn(prop, "range is invalid");
255 break;
256 default:
257 ;
258 }
259 }
260}
261
262void menu_finalize(struct menu *parent)
263{
264 struct menu *menu, *last_menu;
265 struct symbol *sym;
266 struct property *prop;
267 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
268
269 sym = parent->sym;
270 if (parent->list) {
271 if (sym && sym_is_choice(sym)) {
272 if (sym->type == S_UNKNOWN) {
273 /* find the first choice value to find out choice type */
274 current_entry = parent;
275 for (menu = parent->list; menu; menu = menu->next) {
276 if (menu->sym && menu->sym->type != S_UNKNOWN) {
277 menu_set_type(menu->sym->type);
278 break;
279 }
280 }
281 }
282 /* set the type of the remaining choice values */
283 for (menu = parent->list; menu; menu = menu->next) {
284 current_entry = menu;
285 if (menu->sym && menu->sym->type == S_UNKNOWN)
286 menu_set_type(sym->type);
287 }
288 parentdep = expr_alloc_symbol(sym);
289 } else if (parent->prompt)
290 parentdep = parent->prompt->visible.expr;
291 else
292 parentdep = parent->dep;
293
294 for (menu = parent->list; menu; menu = menu->next) {
295 basedep = expr_transform(menu->dep);
296 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
297 basedep = expr_eliminate_dups(basedep);
298 menu->dep = basedep;
299 if (menu->sym)
300 prop = menu->sym->prop;
301 else
302 prop = menu->prompt;
303 for (; prop; prop = prop->next) {
304 if (prop->menu != menu)
305 continue;
306 dep = expr_transform(prop->visible.expr);
307 dep = expr_alloc_and(expr_copy(basedep), dep);
308 dep = expr_eliminate_dups(dep);
309 if (menu->sym && menu->sym->type != S_TRISTATE)
310 dep = expr_trans_bool(dep);
311 prop->visible.expr = dep;
312 if (prop->type == P_SELECT) {
313 struct symbol *es = prop_get_symbol(prop);
314 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
315 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
316 }
317 }
318 }
319 for (menu = parent->list; menu; menu = menu->next)
320 menu_finalize(menu);
321 } else if (sym) {
322 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
323 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
324 basedep = expr_eliminate_dups(expr_transform(basedep));
325 last_menu = NULL;
326 for (menu = parent->next; menu; menu = menu->next) {
327 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
328 if (!expr_contains_symbol(dep, sym))
329 break;
330 if (expr_depends_symbol(dep, sym))
331 goto next;
332 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
333 dep = expr_eliminate_dups(expr_transform(dep));
334 dep2 = expr_copy(basedep);
335 expr_eliminate_eq(&dep, &dep2);
336 expr_free(dep);
337 if (!expr_is_yes(dep2)) {
338 expr_free(dep2);
339 break;
340 }
341 expr_free(dep2);
342 next:
343 menu_finalize(menu);
344 menu->parent = parent;
345 last_menu = menu;
346 }
347 if (last_menu) {
348 parent->list = parent->next;
349 parent->next = last_menu->next;
350 last_menu->next = NULL;
351 }
352
353 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
354 }
355 for (menu = parent->list; menu; menu = menu->next) {
356 if (sym && sym_is_choice(sym) &&
357 menu->sym && !sym_is_choice_value(menu->sym)) {
358 current_entry = menu;
359 menu->sym->flags |= SYMBOL_CHOICEVAL;
360 if (!menu->prompt)
361 menu_warn(menu, "choice value must have a prompt");
362 for (prop = menu->sym->prop; prop; prop = prop->next) {
363 if (prop->type == P_DEFAULT)
364 prop_warn(prop, "defaults for choice "
365 "values not supported");
366 if (prop->menu == menu)
367 continue;
368 if (prop->type == P_PROMPT &&
369 prop->menu->parent->sym != sym)
370 prop_warn(prop, "choice value used outside its choice group");
371 }
372 /* Non-tristate choice values of tristate choices must
373 * depend on the choice being set to Y. The choice
374 * values' dependencies were propagated to their
375 * properties above, so the change here must be re-
376 * propagated.
377 */
378 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
379 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
380 menu->dep = expr_alloc_and(basedep, menu->dep);
381 for (prop = menu->sym->prop; prop; prop = prop->next) {
382 if (prop->menu != menu)
383 continue;
384 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
385 prop->visible.expr);
386 }
387 }
388 menu_add_symbol(P_CHOICE, sym, NULL);
389 prop = sym_get_choice_prop(sym);
390 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
391 ;
392 *ep = expr_alloc_one(E_LIST, NULL);
393 (*ep)->right.sym = menu->sym;
394 }
395 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
396 for (last_menu = menu->list; ; last_menu = last_menu->next) {
397 last_menu->parent = parent;
398 if (!last_menu->next)
399 break;
400 }
401 last_menu->next = menu->next;
402 menu->next = menu->list;
403 menu->list = NULL;
404 }
405 }
406
407 if (sym && !(sym->flags & SYMBOL_WARNED)) {
408 if (sym->type == S_UNKNOWN)
409 menu_warn(parent, "config symbol defined without type");
410
411 if (sym_is_choice(sym) && !parent->prompt)
412 menu_warn(parent, "choice must have a prompt");
413
414 /* Check properties connected to this symbol */
415 sym_check_prop(sym);
416 sym->flags |= SYMBOL_WARNED;
417 }
418
419 if (sym && !sym_is_optional(sym) && parent->prompt) {
420 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
421 expr_alloc_and(parent->prompt->visible.expr,
422 expr_alloc_symbol(&symbol_mod)));
423 }
424}
425
426bool menu_has_prompt(struct menu *menu)
427{
428 if (!menu->prompt)
429 return false;
430 return true;
431}
432
433bool menu_is_visible(struct menu *menu)
434{
435 struct menu *child;
436 struct symbol *sym;
437 tristate visible;
438
439 if (!menu->prompt)
440 return false;
441
442 if (menu->visibility) {
443 if (expr_calc_value(menu->visibility) == no)
444 return no;
445 }
446
447 sym = menu->sym;
448 if (sym) {
449 sym_calc_value(sym);
450 visible = menu->prompt->visible.tri;
451 } else
452 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
453
454 if (visible != no)
455 return true;
456
457 if (!sym || sym_get_tristate_value(menu->sym) == no)
458 return false;
459
460 for (child = menu->list; child; child = child->next) {
461 if (menu_is_visible(child)) {
462 if (sym)
463 sym->flags |= SYMBOL_DEF_USER;
464 return true;
465 }
466 }
467
468 return false;
469}
470
471const char *menu_get_prompt(struct menu *menu)
472{
473 if (menu->prompt)
474 return menu->prompt->text;
475 else if (menu->sym)
476 return menu->sym->name;
477 return NULL;
478}
479
480struct menu *menu_get_root_menu(struct menu *menu)
481{
482 return &rootmenu;
483}
484
485struct menu *menu_get_parent_menu(struct menu *menu)
486{
487 enum prop_type type;
488
489 for (; menu != &rootmenu; menu = menu->parent) {
490 type = menu->prompt ? menu->prompt->type : 0;
491 if (type == P_MENU)
492 break;
493 }
494 return menu;
495}
496
497bool menu_has_help(struct menu *menu)
498{
499 return menu->help != NULL;
500}
501
502const char *menu_get_help(struct menu *menu)
503{
504 if (menu->help)
505 return menu->help;
506 else
507 return "";
508}
509
510static void get_prompt_str(struct gstr *r, struct property *prop)
511{
512 int i, j;
513 struct menu *submenu[8], *menu;
514
515 str_printf(r, _("Prompt: %s\n"), _(prop->text));
516 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
517 prop->menu->lineno);
518 if (!expr_is_yes(prop->visible.expr)) {
519 str_append(r, _(" Depends on: "));
520 expr_gstr_print(prop->visible.expr, r);
521 str_append(r, "\n");
522 }
523 menu = prop->menu->parent;
524 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent)
525 submenu[i++] = menu;
526 if (i > 0) {
527 str_printf(r, _(" Location:\n"));
528 for (j = 4; --i >= 0; j += 2) {
529 menu = submenu[i];
530 str_printf(r, "%*c-> %s", j, ' ', _(menu_get_prompt(menu)));
531 if (menu->sym) {
532 str_printf(r, " (%s [=%s])", menu->sym->name ?
533 menu->sym->name : _("<choice>"),
534 sym_get_string_value(menu->sym));
535 }
536 str_append(r, "\n");
537 }
538 }
539}
540
541void get_symbol_str(struct gstr *r, struct symbol *sym)
542{
543 bool hit;
544 struct property *prop;
545
546 if (sym && sym->name) {
547 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
548 sym_get_string_value(sym));
549 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
550 if (sym->type == S_INT || sym->type == S_HEX) {
551 prop = sym_get_range_prop(sym);
552 if (prop) {
553 str_printf(r, "Range : ");
554 expr_gstr_print(prop->expr, r);
555 str_append(r, "\n");
556 }
557 }
558 }
559 for_all_prompts(sym, prop)
560 get_prompt_str(r, prop);
561 hit = false;
562 for_all_properties(sym, prop, P_SELECT) {
563 if (!hit) {
564 str_append(r, " Selects: ");
565 hit = true;
566 } else
567 str_printf(r, " && ");
568 expr_gstr_print(prop->expr, r);
569 }
570 if (hit)
571 str_append(r, "\n");
572 if (sym->rev_dep.expr) {
573 str_append(r, _(" Selected by: "));
574 expr_gstr_print(sym->rev_dep.expr, r);
575 str_append(r, "\n");
576 }
577 str_append(r, "\n\n");
578}
579
580struct gstr get_relations_str(struct symbol **sym_arr)
581{
582 struct symbol *sym;
583 struct gstr res = str_new();
584 int i;
585
586 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
587 get_symbol_str(&res, sym);
588 if (!i)
589 str_append(&res, _("No matches found.\n"));
590 return res;
591}
592
593
594void menu_get_ext_help(struct menu *menu, struct gstr *help)
595{
596 struct symbol *sym = menu->sym;
597 const char *help_text = nohelp_text;
598
599 if (menu_has_help(menu)) {
600 if (sym->name)
601 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
602 help_text = menu_get_help(menu);
603 }
604 str_printf(help, "%s\n", _(help_text));
605 if (sym)
606 get_symbol_str(help, sym);
607}