Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
4 */
5
6#include <stdlib.h>
7#include <string.h>
8
9#define LKC_DIRECT_LINK
10#include "lkc.h"
11
12static const char nohelp_text[] = N_(
13 "There is no help available for this option.\n");
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 = ¤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 /* 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 current_entry->prompt = prop;
144 }
145 prop->text = prompt;
146
147 return prop;
148}
149
150struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
151{
152 return menu_add_prop(type, prompt, NULL, dep);
153}
154
155void menu_add_visibility(struct expr *expr)
156{
157 current_entry->visibility = expr_alloc_and(current_entry->visibility,
158 expr);
159}
160
161void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
162{
163 menu_add_prop(type, NULL, expr, dep);
164}
165
166void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
167{
168 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
169}
170
171void menu_add_option(int token, char *arg)
172{
173 struct property *prop;
174
175 switch (token) {
176 case T_OPT_MODULES:
177 prop = prop_alloc(P_DEFAULT, modules_sym);
178 prop->expr = expr_alloc_symbol(current_entry->sym);
179 break;
180 case T_OPT_DEFCONFIG_LIST:
181 if (!sym_defconfig_list)
182 sym_defconfig_list = current_entry->sym;
183 else if (sym_defconfig_list != current_entry->sym)
184 zconf_error("trying to redefine defconfig symbol");
185 break;
186 case T_OPT_ENV:
187 prop_add_env(arg);
188 break;
189 }
190}
191
192static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2)
193{
194 return sym2->type == S_INT || sym2->type == S_HEX ||
195 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
196}
197
198static void sym_check_prop(struct symbol *sym)
199{
200 struct property *prop;
201 struct symbol *sym2;
202 for (prop = sym->prop; prop; prop = prop->next) {
203 switch (prop->type) {
204 case P_DEFAULT:
205 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
206 prop->expr->type != E_SYMBOL)
207 prop_warn(prop,
208 "default for config symbol '%s'"
209 " must be a single symbol", sym->name);
210 break;
211 case P_SELECT:
212 sym2 = prop_get_symbol(prop);
213 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
214 prop_warn(prop,
215 "config symbol '%s' uses select, but is "
216 "not boolean or tristate", sym->name);
217 else if (sym2->type != S_UNKNOWN &&
218 sym2->type != S_BOOLEAN &&
219 sym2->type != S_TRISTATE)
220 prop_warn(prop,
221 "'%s' has wrong type. 'select' only "
222 "accept arguments of boolean and "
223 "tristate type", sym2->name);
224 break;
225 case P_RANGE:
226 if (sym->type != S_INT && sym->type != S_HEX)
227 prop_warn(prop, "range is only allowed "
228 "for int or hex symbols");
229 if (!menu_range_valid_sym(sym, prop->expr->left.sym) ||
230 !menu_range_valid_sym(sym, prop->expr->right.sym))
231 prop_warn(prop, "range is invalid");
232 break;
233 default:
234 ;
235 }
236 }
237}
238
239void menu_finalize(struct menu *parent)
240{
241 struct menu *menu, *last_menu;
242 struct symbol *sym;
243 struct property *prop;
244 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
245
246 sym = parent->sym;
247 if (parent->list) {
248 if (sym && sym_is_choice(sym)) {
249 if (sym->type == S_UNKNOWN) {
250 /* find the first choice value to find out choice type */
251 current_entry = parent;
252 for (menu = parent->list; menu; menu = menu->next) {
253 if (menu->sym && menu->sym->type != S_UNKNOWN) {
254 menu_set_type(menu->sym->type);
255 break;
256 }
257 }
258 }
259 /* set the type of the remaining choice values */
260 for (menu = parent->list; menu; menu = menu->next) {
261 current_entry = menu;
262 if (menu->sym && menu->sym->type == S_UNKNOWN)
263 menu_set_type(sym->type);
264 }
265 parentdep = expr_alloc_symbol(sym);
266 } else if (parent->prompt)
267 parentdep = parent->prompt->visible.expr;
268 else
269 parentdep = parent->dep;
270
271 for (menu = parent->list; menu; menu = menu->next) {
272 basedep = expr_transform(menu->dep);
273 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
274 basedep = expr_eliminate_dups(basedep);
275 menu->dep = basedep;
276 if (menu->sym)
277 prop = menu->sym->prop;
278 else
279 prop = menu->prompt;
280 for (; prop; prop = prop->next) {
281 if (prop->menu != menu)
282 continue;
283 dep = expr_transform(prop->visible.expr);
284 dep = expr_alloc_and(expr_copy(basedep), dep);
285 dep = expr_eliminate_dups(dep);
286 if (menu->sym && menu->sym->type != S_TRISTATE)
287 dep = expr_trans_bool(dep);
288 prop->visible.expr = dep;
289 if (prop->type == P_SELECT) {
290 struct symbol *es = prop_get_symbol(prop);
291 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
292 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
293 }
294 }
295 }
296 for (menu = parent->list; menu; menu = menu->next)
297 menu_finalize(menu);
298 } else if (sym) {
299 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
300 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
301 basedep = expr_eliminate_dups(expr_transform(basedep));
302 last_menu = NULL;
303 for (menu = parent->next; menu; menu = menu->next) {
304 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
305 if (!expr_contains_symbol(dep, sym))
306 break;
307 if (expr_depends_symbol(dep, sym))
308 goto next;
309 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
310 dep = expr_eliminate_dups(expr_transform(dep));
311 dep2 = expr_copy(basedep);
312 expr_eliminate_eq(&dep, &dep2);
313 expr_free(dep);
314 if (!expr_is_yes(dep2)) {
315 expr_free(dep2);
316 break;
317 }
318 expr_free(dep2);
319 next:
320 menu_finalize(menu);
321 menu->parent = parent;
322 last_menu = menu;
323 }
324 if (last_menu) {
325 parent->list = parent->next;
326 parent->next = last_menu->next;
327 last_menu->next = NULL;
328 }
329
330 sym->dir_dep.expr = parent->dep;
331 }
332 for (menu = parent->list; menu; menu = menu->next) {
333 if (sym && sym_is_choice(sym) &&
334 menu->sym && !sym_is_choice_value(menu->sym)) {
335 current_entry = menu;
336 menu->sym->flags |= SYMBOL_CHOICEVAL;
337 if (!menu->prompt)
338 menu_warn(menu, "choice value must have a prompt");
339 for (prop = menu->sym->prop; prop; prop = prop->next) {
340 if (prop->type == P_DEFAULT)
341 prop_warn(prop, "defaults for choice "
342 "values not supported");
343 if (prop->menu == menu)
344 continue;
345 if (prop->type == P_PROMPT &&
346 prop->menu->parent->sym != sym)
347 prop_warn(prop, "choice value used outside its choice group");
348 }
349 /* Non-tristate choice values of tristate choices must
350 * depend on the choice being set to Y. The choice
351 * values' dependencies were propagated to their
352 * properties above, so the change here must be re-
353 * propagated.
354 */
355 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
356 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
357 menu->dep = expr_alloc_and(basedep, menu->dep);
358 for (prop = menu->sym->prop; prop; prop = prop->next) {
359 if (prop->menu != menu)
360 continue;
361 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
362 prop->visible.expr);
363 }
364 }
365 menu_add_symbol(P_CHOICE, sym, NULL);
366 prop = sym_get_choice_prop(sym);
367 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
368 ;
369 *ep = expr_alloc_one(E_LIST, NULL);
370 (*ep)->right.sym = menu->sym;
371 }
372 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
373 for (last_menu = menu->list; ; last_menu = last_menu->next) {
374 last_menu->parent = parent;
375 if (!last_menu->next)
376 break;
377 }
378 last_menu->next = menu->next;
379 menu->next = menu->list;
380 menu->list = NULL;
381 }
382 }
383
384 if (sym && !(sym->flags & SYMBOL_WARNED)) {
385 if (sym->type == S_UNKNOWN)
386 menu_warn(parent, "config symbol defined without type");
387
388 if (sym_is_choice(sym) && !parent->prompt)
389 menu_warn(parent, "choice must have a prompt");
390
391 /* Check properties connected to this symbol */
392 sym_check_prop(sym);
393 sym->flags |= SYMBOL_WARNED;
394 }
395
396 if (sym && !sym_is_optional(sym) && parent->prompt) {
397 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
398 expr_alloc_and(parent->prompt->visible.expr,
399 expr_alloc_symbol(&symbol_mod)));
400 }
401}
402
403bool menu_has_prompt(struct menu *menu)
404{
405 if (!menu->prompt)
406 return false;
407 return true;
408}
409
410bool menu_is_visible(struct menu *menu)
411{
412 struct menu *child;
413 struct symbol *sym;
414 tristate visible;
415
416 if (!menu->prompt)
417 return false;
418
419 if (menu->visibility) {
420 if (expr_calc_value(menu->visibility) == no)
421 return no;
422 }
423
424 sym = menu->sym;
425 if (sym) {
426 sym_calc_value(sym);
427 visible = menu->prompt->visible.tri;
428 } else
429 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
430
431 if (visible != no)
432 return true;
433
434 if (!sym || sym_get_tristate_value(menu->sym) == no)
435 return false;
436
437 for (child = menu->list; child; child = child->next) {
438 if (menu_is_visible(child)) {
439 if (sym)
440 sym->flags |= SYMBOL_DEF_USER;
441 return true;
442 }
443 }
444
445 return false;
446}
447
448const char *menu_get_prompt(struct menu *menu)
449{
450 if (menu->prompt)
451 return menu->prompt->text;
452 else if (menu->sym)
453 return menu->sym->name;
454 return NULL;
455}
456
457struct menu *menu_get_root_menu(struct menu *menu)
458{
459 return &rootmenu;
460}
461
462struct menu *menu_get_parent_menu(struct menu *menu)
463{
464 enum prop_type type;
465
466 for (; menu != &rootmenu; menu = menu->parent) {
467 type = menu->prompt ? menu->prompt->type : 0;
468 if (type == P_MENU)
469 break;
470 }
471 return menu;
472}
473
474bool menu_has_help(struct menu *menu)
475{
476 return menu->help != NULL;
477}
478
479const char *menu_get_help(struct menu *menu)
480{
481 if (menu->help)
482 return menu->help;
483 else
484 return "";
485}
486
487static void get_prompt_str(struct gstr *r, struct property *prop)
488{
489 int i, j;
490 struct menu *submenu[8], *menu;
491
492 str_printf(r, _("Prompt: %s\n"), _(prop->text));
493 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
494 prop->menu->lineno);
495 if (!expr_is_yes(prop->visible.expr)) {
496 str_append(r, _(" Depends on: "));
497 expr_gstr_print(prop->visible.expr, r);
498 str_append(r, "\n");
499 }
500 menu = prop->menu->parent;
501 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent)
502 submenu[i++] = menu;
503 if (i > 0) {
504 str_printf(r, _(" Location:\n"));
505 for (j = 4; --i >= 0; j += 2) {
506 menu = submenu[i];
507 str_printf(r, "%*c-> %s", j, ' ', _(menu_get_prompt(menu)));
508 if (menu->sym) {
509 str_printf(r, " (%s [=%s])", menu->sym->name ?
510 menu->sym->name : _("<choice>"),
511 sym_get_string_value(menu->sym));
512 }
513 str_append(r, "\n");
514 }
515 }
516}
517
518void get_symbol_str(struct gstr *r, struct symbol *sym)
519{
520 bool hit;
521 struct property *prop;
522
523 if (sym && sym->name) {
524 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
525 sym_get_string_value(sym));
526 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
527 if (sym->type == S_INT || sym->type == S_HEX) {
528 prop = sym_get_range_prop(sym);
529 if (prop) {
530 str_printf(r, "Range : ");
531 expr_gstr_print(prop->expr, r);
532 str_append(r, "\n");
533 }
534 }
535 }
536 for_all_prompts(sym, prop)
537 get_prompt_str(r, prop);
538 hit = false;
539 for_all_properties(sym, prop, P_SELECT) {
540 if (!hit) {
541 str_append(r, " Selects: ");
542 hit = true;
543 } else
544 str_printf(r, " && ");
545 expr_gstr_print(prop->expr, r);
546 }
547 if (hit)
548 str_append(r, "\n");
549 if (sym->rev_dep.expr) {
550 str_append(r, _(" Selected by: "));
551 expr_gstr_print(sym->rev_dep.expr, r);
552 str_append(r, "\n");
553 }
554 str_append(r, "\n\n");
555}
556
557struct gstr get_relations_str(struct symbol **sym_arr)
558{
559 struct symbol *sym;
560 struct gstr res = str_new();
561 int i;
562
563 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
564 get_symbol_str(&res, sym);
565 if (!i)
566 str_append(&res, _("No matches found.\n"));
567 return res;
568}
569
570
571void menu_get_ext_help(struct menu *menu, struct gstr *help)
572{
573 struct symbol *sym = menu->sym;
574
575 if (menu_has_help(menu)) {
576 if (sym->name) {
577 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
578 str_append(help, _(menu_get_help(menu)));
579 str_append(help, "\n");
580 }
581 } else {
582 str_append(help, nohelp_text);
583 }
584 if (sym)
585 get_symbol_str(help, sym);
586}