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 <ctype.h> 7 #include <stdarg.h> 8 #include <stdlib.h> 9 #include <string.h> 10 11 #include "lkc.h" 12 13 static const char nohelp_text[] = "There is no help available for this option."; 14 15 struct menu rootmenu; 16 static struct menu **last_entry_ptr; 17 18 struct file *file_list; 19 struct file *current_file; 20 21 void 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 31 static 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 41 void _menu_init(void) 42 { 43 current_entry = current_menu = &rootmenu; 44 last_entry_ptr = &rootmenu.list; 45 } 46 47 void 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 65 void menu_end_entry(void) 66 { 67 } 68 69 struct 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 76 void menu_end_menu(void) 77 { 78 last_entry_ptr = ¤t_menu->next; 79 current_menu = current_menu->parent; 80 } 81 82 static 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 } 106 107 void menu_add_dep(struct expr *dep) 108 { 109 current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep)); 110 } 111 112 void 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 } 126 127 struct 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 struct expr *dup_expr; 150 151 if (!menu->visibility) 152 continue; 153 /* 154 * Do not add a reference to the 155 * menu's visibility expression but 156 * use a copy of it. Otherwise the 157 * expression reduction functions 158 * will modify expressions that have 159 * multiple references which can 160 * cause unwanted side effects. 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 } 176 177 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep) 178 { 179 return menu_add_prop(type, prompt, NULL, dep); 180 } 181 182 void menu_add_visibility(struct expr *expr) 183 { 184 current_entry->visibility = expr_alloc_and(current_entry->visibility, 185 expr); 186 } 187 188 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep) 189 { 190 menu_add_prop(type, NULL, expr, dep); 191 } 192 193 void 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 } 197 198 void 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 } 218 219 static 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 } 224 225 static 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 } 274 275 void 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 /* find the first choice value to find out choice type */ 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 /* set the type of the remaining choice values */ 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 /* Non-tristate choice values of tristate choices must 386 * depend on the choice being set to Y. The choice 387 * values' dependencies were propagated to their 388 * properties above, so the change here must be re- 389 * propagated. 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 /* Check properties connected to this symbol */ 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 } 438 439 bool menu_has_prompt(struct menu *menu) 440 { 441 if (!menu->prompt) 442 return false; 443 return true; 444 } 445 446 bool 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 } 483 484 const 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 } 492 493 struct menu *menu_get_root_menu(struct menu *menu) 494 { 495 return &rootmenu; 496 } 497 498 struct 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 } 509 510 bool menu_has_help(struct menu *menu) 511 { 512 return menu->help != NULL; 513 } 514 515 const char *menu_get_help(struct menu *menu) 516 { 517 if (menu->help) 518 return menu->help; 519 else 520 return ""; 521 } 522 523 static 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; 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 * There is not enough room to put the hint at the 545 * beginning of the "Prompt" line. Put the hint on the 546 * last "Location" line even when it would belong on 547 * the former. 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 (head && location && 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 * get peoperty of type P_SYMBOL 582 */ 583 static 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 * head is optional and may be NULL 594 */ 595 void 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 } 646 647 struct 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 } 659 660 661 void 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