1 /* 2 * Copyright (C) 2002 Roman Zippel <[email protected]> 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 12 static const char nohelp_text[] = N_( 13 "There is no help available for this option.\n"); 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 = 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 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 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 } 163 164 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep) 165 { 166 return menu_add_prop(type, prompt, NULL, dep); 167 } 168 169 void menu_add_visibility(struct expr *expr) 170 { 171 current_entry->visibility = expr_alloc_and(current_entry->visibility, 172 expr); 173 } 174 175 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep) 176 { 177 menu_add_prop(type, NULL, expr, dep); 178 } 179 180 void 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 } 184 185 void 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 } 205 206 static int menu_range_valid_sym(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 } 211 212 static 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 break; 225 case P_SELECT: 226 sym2 = prop_get_symbol(prop); 227 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE) 228 prop_warn(prop, 229 "config symbol '%s' uses select, but is " 230 "not boolean or tristate", sym->name); 231 else if (sym2->type != S_UNKNOWN && 232 sym2->type != S_BOOLEAN && 233 sym2->type != S_TRISTATE) 234 prop_warn(prop, 235 "'%s' has wrong type. 'select' only " 236 "accept arguments of boolean and " 237 "tristate type", sym2->name); 238 break; 239 case P_RANGE: 240 if (sym->type != S_INT && sym->type != S_HEX) 241 prop_warn(prop, "range is only allowed " 242 "for int or hex symbols"); 243 if (!menu_range_valid_sym(sym, prop->expr->left.sym) || 244 !menu_range_valid_sym(sym, prop->expr->right.sym)) 245 prop_warn(prop, "range is invalid"); 246 break; 247 default: 248 ; 249 } 250 } 251 } 252 253 void menu_finalize(struct menu *parent) 254 { 255 struct menu *menu, *last_menu; 256 struct symbol *sym; 257 struct property *prop; 258 struct expr *parentdep, *basedep, *dep, *dep2, **ep; 259 260 sym = parent->sym; 261 if (parent->list) { 262 if (sym && sym_is_choice(sym)) { 263 if (sym->type == S_UNKNOWN) { 264 /* find the first choice value to find out choice type */ 265 current_entry = parent; 266 for (menu = parent->list; menu; menu = menu->next) { 267 if (menu->sym && menu->sym->type != S_UNKNOWN) { 268 menu_set_type(menu->sym->type); 269 break; 270 } 271 } 272 } 273 /* set the type of the remaining choice values */ 274 for (menu = parent->list; menu; menu = menu->next) { 275 current_entry = menu; 276 if (menu->sym && menu->sym->type == S_UNKNOWN) 277 menu_set_type(sym->type); 278 } 279 parentdep = expr_alloc_symbol(sym); 280 } else if (parent->prompt) 281 parentdep = parent->prompt->visible.expr; 282 else 283 parentdep = parent->dep; 284 285 for (menu = parent->list; menu; menu = menu->next) { 286 basedep = expr_transform(menu->dep); 287 basedep = expr_alloc_and(expr_copy(parentdep), basedep); 288 basedep = expr_eliminate_dups(basedep); 289 menu->dep = basedep; 290 if (menu->sym) 291 prop = menu->sym->prop; 292 else 293 prop = menu->prompt; 294 for (; prop; prop = prop->next) { 295 if (prop->menu != menu) 296 continue; 297 dep = expr_transform(prop->visible.expr); 298 dep = expr_alloc_and(expr_copy(basedep), dep); 299 dep = expr_eliminate_dups(dep); 300 if (menu->sym && menu->sym->type != S_TRISTATE) 301 dep = expr_trans_bool(dep); 302 prop->visible.expr = dep; 303 if (prop->type == P_SELECT) { 304 struct symbol *es = prop_get_symbol(prop); 305 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr, 306 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep))); 307 } 308 } 309 } 310 for (menu = parent->list; menu; menu = menu->next) 311 menu_finalize(menu); 312 } else if (sym) { 313 basedep = parent->prompt ? parent->prompt->visible.expr : NULL; 314 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no); 315 basedep = expr_eliminate_dups(expr_transform(basedep)); 316 last_menu = NULL; 317 for (menu = parent->next; menu; menu = menu->next) { 318 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep; 319 if (!expr_contains_symbol(dep, sym)) 320 break; 321 if (expr_depends_symbol(dep, sym)) 322 goto next; 323 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no); 324 dep = expr_eliminate_dups(expr_transform(dep)); 325 dep2 = expr_copy(basedep); 326 expr_eliminate_eq(&dep, &dep2); 327 expr_free(dep); 328 if (!expr_is_yes(dep2)) { 329 expr_free(dep2); 330 break; 331 } 332 expr_free(dep2); 333 next: 334 menu_finalize(menu); 335 menu->parent = parent; 336 last_menu = menu; 337 } 338 if (last_menu) { 339 parent->list = parent->next; 340 parent->next = last_menu->next; 341 last_menu->next = NULL; 342 } 343 344 sym->dir_dep.expr = parent->dep; 345 } 346 for (menu = parent->list; menu; menu = menu->next) { 347 if (sym && sym_is_choice(sym) && 348 menu->sym && !sym_is_choice_value(menu->sym)) { 349 current_entry = menu; 350 menu->sym->flags |= SYMBOL_CHOICEVAL; 351 if (!menu->prompt) 352 menu_warn(menu, "choice value must have a prompt"); 353 for (prop = menu->sym->prop; prop; prop = prop->next) { 354 if (prop->type == P_DEFAULT) 355 prop_warn(prop, "defaults for choice " 356 "values not supported"); 357 if (prop->menu == menu) 358 continue; 359 if (prop->type == P_PROMPT && 360 prop->menu->parent->sym != sym) 361 prop_warn(prop, "choice value used outside its choice group"); 362 } 363 /* Non-tristate choice values of tristate choices must 364 * depend on the choice being set to Y. The choice 365 * values' dependencies were propagated to their 366 * properties above, so the change here must be re- 367 * propagated. 368 */ 369 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) { 370 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes); 371 menu->dep = expr_alloc_and(basedep, menu->dep); 372 for (prop = menu->sym->prop; prop; prop = prop->next) { 373 if (prop->menu != menu) 374 continue; 375 prop->visible.expr = expr_alloc_and(expr_copy(basedep), 376 prop->visible.expr); 377 } 378 } 379 menu_add_symbol(P_CHOICE, sym, NULL); 380 prop = sym_get_choice_prop(sym); 381 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr) 382 ; 383 *ep = expr_alloc_one(E_LIST, NULL); 384 (*ep)->right.sym = menu->sym; 385 } 386 if (menu->list && (!menu->prompt || !menu->prompt->text)) { 387 for (last_menu = menu->list; ; last_menu = last_menu->next) { 388 last_menu->parent = parent; 389 if (!last_menu->next) 390 break; 391 } 392 last_menu->next = menu->next; 393 menu->next = menu->list; 394 menu->list = NULL; 395 } 396 } 397 398 if (sym && !(sym->flags & SYMBOL_WARNED)) { 399 if (sym->type == S_UNKNOWN) 400 menu_warn(parent, "config symbol defined without type"); 401 402 if (sym_is_choice(sym) && !parent->prompt) 403 menu_warn(parent, "choice must have a prompt"); 404 405 /* Check properties connected to this symbol */ 406 sym_check_prop(sym); 407 sym->flags |= SYMBOL_WARNED; 408 } 409 410 if (sym && !sym_is_optional(sym) && parent->prompt) { 411 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr, 412 expr_alloc_and(parent->prompt->visible.expr, 413 expr_alloc_symbol(&symbol_mod))); 414 } 415 } 416 417 bool menu_has_prompt(struct menu *menu) 418 { 419 if (!menu->prompt) 420 return false; 421 return true; 422 } 423 424 bool menu_is_visible(struct menu *menu) 425 { 426 struct menu *child; 427 struct symbol *sym; 428 tristate visible; 429 430 if (!menu->prompt) 431 return false; 432 433 if (menu->visibility) { 434 if (expr_calc_value(menu->visibility) == no) 435 return no; 436 } 437 438 sym = menu->sym; 439 if (sym) { 440 sym_calc_value(sym); 441 visible = menu->prompt->visible.tri; 442 } else 443 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr); 444 445 if (visible != no) 446 return true; 447 448 if (!sym || sym_get_tristate_value(menu->sym) == no) 449 return false; 450 451 for (child = menu->list; child; child = child->next) { 452 if (menu_is_visible(child)) { 453 if (sym) 454 sym->flags |= SYMBOL_DEF_USER; 455 return true; 456 } 457 } 458 459 return false; 460 } 461 462 const char *menu_get_prompt(struct menu *menu) 463 { 464 if (menu->prompt) 465 return menu->prompt->text; 466 else if (menu->sym) 467 return menu->sym->name; 468 return NULL; 469 } 470 471 struct menu *menu_get_root_menu(struct menu *menu) 472 { 473 return &rootmenu; 474 } 475 476 struct menu *menu_get_parent_menu(struct menu *menu) 477 { 478 enum prop_type type; 479 480 for (; menu != &rootmenu; menu = menu->parent) { 481 type = menu->prompt ? menu->prompt->type : 0; 482 if (type == P_MENU) 483 break; 484 } 485 return menu; 486 } 487 488 bool menu_has_help(struct menu *menu) 489 { 490 return menu->help != NULL; 491 } 492 493 const char *menu_get_help(struct menu *menu) 494 { 495 if (menu->help) 496 return menu->help; 497 else 498 return ""; 499 } 500 501 static void get_prompt_str(struct gstr *r, struct property *prop) 502 { 503 int i, j; 504 struct menu *submenu[8], *menu; 505 506 str_printf(r, _("Prompt: %s\n"), _(prop->text)); 507 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name, 508 prop->menu->lineno); 509 if (!expr_is_yes(prop->visible.expr)) { 510 str_append(r, _(" Depends on: ")); 511 expr_gstr_print(prop->visible.expr, r); 512 str_append(r, "\n"); 513 } 514 menu = prop->menu->parent; 515 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) 516 submenu[i++] = menu; 517 if (i > 0) { 518 str_printf(r, _(" Location:\n")); 519 for (j = 4; --i >= 0; j += 2) { 520 menu = submenu[i]; 521 str_printf(r, "%*c-> %s", j, ' ', _(menu_get_prompt(menu))); 522 if (menu->sym) { 523 str_printf(r, " (%s [=%s])", menu->sym->name ? 524 menu->sym->name : _("<choice>"), 525 sym_get_string_value(menu->sym)); 526 } 527 str_append(r, "\n"); 528 } 529 } 530 } 531 532 void get_symbol_str(struct gstr *r, struct symbol *sym) 533 { 534 bool hit; 535 struct property *prop; 536 537 if (sym && sym->name) { 538 str_printf(r, "Symbol: %s [=%s]\n", sym->name, 539 sym_get_string_value(sym)); 540 str_printf(r, "Type : %s\n", sym_type_name(sym->type)); 541 if (sym->type == S_INT || sym->type == S_HEX) { 542 prop = sym_get_range_prop(sym); 543 if (prop) { 544 str_printf(r, "Range : "); 545 expr_gstr_print(prop->expr, r); 546 str_append(r, "\n"); 547 } 548 } 549 } 550 for_all_prompts(sym, prop) 551 get_prompt_str(r, prop); 552 hit = false; 553 for_all_properties(sym, prop, P_SELECT) { 554 if (!hit) { 555 str_append(r, " Selects: "); 556 hit = true; 557 } else 558 str_printf(r, " && "); 559 expr_gstr_print(prop->expr, r); 560 } 561 if (hit) 562 str_append(r, "\n"); 563 if (sym->rev_dep.expr) { 564 str_append(r, _(" Selected by: ")); 565 expr_gstr_print(sym->rev_dep.expr, r); 566 str_append(r, "\n"); 567 } 568 str_append(r, "\n\n"); 569 } 570 571 struct gstr get_relations_str(struct symbol **sym_arr) 572 { 573 struct symbol *sym; 574 struct gstr res = str_new(); 575 int i; 576 577 for (i = 0; sym_arr && (sym = sym_arr[i]); i++) 578 get_symbol_str(&res, sym); 579 if (!i) 580 str_append(&res, _("No matches found.\n")); 581 return res; 582 } 583 584 585 void menu_get_ext_help(struct menu *menu, struct gstr *help) 586 { 587 struct symbol *sym = menu->sym; 588 589 if (menu_has_help(menu)) { 590 if (sym->name) { 591 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name); 592 str_append(help, _(menu_get_help(menu))); 593 str_append(help, "\n"); 594 } 595 } else { 596 str_append(help, nohelp_text); 597 } 598 if (sym) 599 get_symbol_str(help, sym); 600 } 601