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[] = N_( 14 "There is no help available for this option.\n"); 15 16 struct menu rootmenu; 17 static struct menu **last_entry_ptr; 18 19 struct file *file_list; 20 struct file *current_file; 21 22 void menu_warn(struct menu *menu, const char *fmt, ...) 23 { 24 va_list ap; 25 va_start(ap, fmt); 26 fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno); 27 vfprintf(stderr, fmt, ap); 28 fprintf(stderr, "\n"); 29 va_end(ap); 30 } 31 32 static void prop_warn(struct property *prop, const char *fmt, ...) 33 { 34 va_list ap; 35 va_start(ap, fmt); 36 fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno); 37 vfprintf(stderr, fmt, ap); 38 fprintf(stderr, "\n"); 39 va_end(ap); 40 } 41 42 void _menu_init(void) 43 { 44 current_entry = current_menu = &rootmenu; 45 last_entry_ptr = &rootmenu.list; 46 } 47 48 void menu_add_entry(struct symbol *sym) 49 { 50 struct menu *menu; 51 52 menu = malloc(sizeof(*menu)); 53 memset(menu, 0, sizeof(*menu)); 54 menu->sym = sym; 55 menu->parent = current_menu; 56 menu->file = current_file; 57 menu->lineno = zconf_lineno(); 58 59 *last_entry_ptr = menu; 60 last_entry_ptr = &menu->next; 61 current_entry = menu; 62 if (sym) 63 menu_add_symbol(P_SYMBOL, sym, NULL); 64 } 65 66 void menu_end_entry(void) 67 { 68 } 69 70 struct menu *menu_add_menu(void) 71 { 72 menu_end_entry(); 73 last_entry_ptr = ¤t_entry->list; 74 return current_menu = current_entry; 75 } 76 77 void menu_end_menu(void) 78 { 79 last_entry_ptr = ¤t_menu->next; 80 current_menu = current_menu->parent; 81 } 82 83 static struct expr *menu_check_dep(struct expr *e) 84 { 85 if (!e) 86 return e; 87 88 switch (e->type) { 89 case E_NOT: 90 e->left.expr = menu_check_dep(e->left.expr); 91 break; 92 case E_OR: 93 case E_AND: 94 e->left.expr = menu_check_dep(e->left.expr); 95 e->right.expr = menu_check_dep(e->right.expr); 96 break; 97 case E_SYMBOL: 98 /* change 'm' into 'm' && MODULES */ 99 if (e->left.sym == &symbol_mod) 100 return expr_alloc_and(e, expr_alloc_symbol(modules_sym)); 101 break; 102 default: 103 break; 104 } 105 return e; 106 } 107 108 void menu_add_dep(struct expr *dep) 109 { 110 current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep)); 111 } 112 113 void menu_set_type(int type) 114 { 115 struct symbol *sym = current_entry->sym; 116 117 if (sym->type == type) 118 return; 119 if (sym->type == S_UNKNOWN) { 120 sym->type = type; 121 return; 122 } 123 menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'", 124 sym->name ? sym->name : "<choice>", 125 sym_type_name(sym->type), sym_type_name(type)); 126 } 127 128 struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep) 129 { 130 struct property *prop = prop_alloc(type, current_entry->sym); 131 132 prop->menu = current_entry; 133 prop->expr = expr; 134 prop->visible.expr = menu_check_dep(dep); 135 136 if (prompt) { 137 if (isspace(*prompt)) { 138 prop_warn(prop, "leading whitespace ignored"); 139 while (isspace(*prompt)) 140 prompt++; 141 } 142 if (current_entry->prompt && current_entry != &rootmenu) 143 prop_warn(prop, "prompt redefined"); 144 145 /* Apply all upper menus' visibilities to actual prompts. */ 146 if(type == P_PROMPT) { 147 struct menu *menu = current_entry; 148 149 while ((menu = menu->parent) != NULL) { 150 if (!menu->visibility) 151 continue; 152 prop->visible.expr 153 = expr_alloc_and(prop->visible.expr, 154 menu->visibility); 155 } 156 } 157 158 current_entry->prompt = prop; 159 } 160 prop->text = prompt; 161 162 return prop; 163 } 164 165 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep) 166 { 167 return menu_add_prop(type, prompt, NULL, dep); 168 } 169 170 void menu_add_visibility(struct expr *expr) 171 { 172 current_entry->visibility = expr_alloc_and(current_entry->visibility, 173 expr); 174 } 175 176 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep) 177 { 178 menu_add_prop(type, NULL, expr, dep); 179 } 180 181 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep) 182 { 183 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep); 184 } 185 186 void menu_add_option(int token, char *arg) 187 { 188 struct property *prop; 189 190 switch (token) { 191 case T_OPT_MODULES: 192 prop = prop_alloc(P_DEFAULT, modules_sym); 193 prop->expr = expr_alloc_symbol(current_entry->sym); 194 break; 195 case T_OPT_DEFCONFIG_LIST: 196 if (!sym_defconfig_list) 197 sym_defconfig_list = current_entry->sym; 198 else if (sym_defconfig_list != current_entry->sym) 199 zconf_error("trying to redefine defconfig symbol"); 200 break; 201 case T_OPT_ENV: 202 prop_add_env(arg); 203 break; 204 } 205 } 206 207 static int menu_validate_number(struct symbol *sym, struct symbol *sym2) 208 { 209 return sym2->type == S_INT || sym2->type == S_HEX || 210 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name)); 211 } 212 213 static void sym_check_prop(struct symbol *sym) 214 { 215 struct property *prop; 216 struct symbol *sym2; 217 for (prop = sym->prop; prop; prop = prop->next) { 218 switch (prop->type) { 219 case P_DEFAULT: 220 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) && 221 prop->expr->type != E_SYMBOL) 222 prop_warn(prop, 223 "default for config symbol '%s'" 224 " must be a single symbol", sym->name); 225 if (prop->expr->type != E_SYMBOL) 226 break; 227 sym2 = prop_get_symbol(prop); 228 if (sym->type == S_HEX || sym->type == S_INT) { 229 if (!menu_validate_number(sym, sym2)) 230 prop_warn(prop, 231 "'%s': number is invalid", 232 sym->name); 233 } 234 break; 235 case P_SELECT: 236 sym2 = prop_get_symbol(prop); 237 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE) 238 prop_warn(prop, 239 "config symbol '%s' uses select, but is " 240 "not boolean or tristate", sym->name); 241 else if (sym2->type != S_UNKNOWN && 242 sym2->type != S_BOOLEAN && 243 sym2->type != S_TRISTATE) 244 prop_warn(prop, 245 "'%s' has wrong type. 'select' only " 246 "accept arguments of boolean and " 247 "tristate type", sym2->name); 248 break; 249 case P_RANGE: 250 if (sym->type != S_INT && sym->type != S_HEX) 251 prop_warn(prop, "range is only allowed " 252 "for int or hex symbols"); 253 if (!menu_validate_number(sym, prop->expr->left.sym) || 254 !menu_validate_number(sym, prop->expr->right.sym)) 255 prop_warn(prop, "range is invalid"); 256 break; 257 default: 258 ; 259 } 260 } 261 } 262 263 void menu_finalize(struct menu *parent) 264 { 265 struct menu *menu, *last_menu; 266 struct symbol *sym; 267 struct property *prop; 268 struct expr *parentdep, *basedep, *dep, *dep2, **ep; 269 270 sym = parent->sym; 271 if (parent->list) { 272 if (sym && sym_is_choice(sym)) { 273 if (sym->type == S_UNKNOWN) { 274 /* find the first choice value to find out choice type */ 275 current_entry = parent; 276 for (menu = parent->list; menu; menu = menu->next) { 277 if (menu->sym && menu->sym->type != S_UNKNOWN) { 278 menu_set_type(menu->sym->type); 279 break; 280 } 281 } 282 } 283 /* set the type of the remaining choice values */ 284 for (menu = parent->list; menu; menu = menu->next) { 285 current_entry = menu; 286 if (menu->sym && menu->sym->type == S_UNKNOWN) 287 menu_set_type(sym->type); 288 } 289 parentdep = expr_alloc_symbol(sym); 290 } else if (parent->prompt) 291 parentdep = parent->prompt->visible.expr; 292 else 293 parentdep = parent->dep; 294 295 for (menu = parent->list; menu; menu = menu->next) { 296 basedep = expr_transform(menu->dep); 297 basedep = expr_alloc_and(expr_copy(parentdep), basedep); 298 basedep = expr_eliminate_dups(basedep); 299 menu->dep = basedep; 300 if (menu->sym) 301 prop = menu->sym->prop; 302 else 303 prop = menu->prompt; 304 for (; prop; prop = prop->next) { 305 if (prop->menu != menu) 306 continue; 307 dep = expr_transform(prop->visible.expr); 308 dep = expr_alloc_and(expr_copy(basedep), dep); 309 dep = expr_eliminate_dups(dep); 310 if (menu->sym && menu->sym->type != S_TRISTATE) 311 dep = expr_trans_bool(dep); 312 prop->visible.expr = dep; 313 if (prop->type == P_SELECT) { 314 struct symbol *es = prop_get_symbol(prop); 315 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr, 316 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep))); 317 } 318 } 319 } 320 for (menu = parent->list; menu; menu = menu->next) 321 menu_finalize(menu); 322 } else if (sym) { 323 basedep = parent->prompt ? parent->prompt->visible.expr : NULL; 324 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no); 325 basedep = expr_eliminate_dups(expr_transform(basedep)); 326 last_menu = NULL; 327 for (menu = parent->next; menu; menu = menu->next) { 328 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep; 329 if (!expr_contains_symbol(dep, sym)) 330 break; 331 if (expr_depends_symbol(dep, sym)) 332 goto next; 333 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no); 334 dep = expr_eliminate_dups(expr_transform(dep)); 335 dep2 = expr_copy(basedep); 336 expr_eliminate_eq(&dep, &dep2); 337 expr_free(dep); 338 if (!expr_is_yes(dep2)) { 339 expr_free(dep2); 340 break; 341 } 342 expr_free(dep2); 343 next: 344 menu_finalize(menu); 345 menu->parent = parent; 346 last_menu = menu; 347 } 348 if (last_menu) { 349 parent->list = parent->next; 350 parent->next = last_menu->next; 351 last_menu->next = NULL; 352 } 353 354 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep); 355 } 356 for (menu = parent->list; menu; menu = menu->next) { 357 if (sym && sym_is_choice(sym) && 358 menu->sym && !sym_is_choice_value(menu->sym)) { 359 current_entry = menu; 360 menu->sym->flags |= SYMBOL_CHOICEVAL; 361 if (!menu->prompt) 362 menu_warn(menu, "choice value must have a prompt"); 363 for (prop = menu->sym->prop; prop; prop = prop->next) { 364 if (prop->type == P_DEFAULT) 365 prop_warn(prop, "defaults for choice " 366 "values not supported"); 367 if (prop->menu == menu) 368 continue; 369 if (prop->type == P_PROMPT && 370 prop->menu->parent->sym != sym) 371 prop_warn(prop, "choice value used outside its choice group"); 372 } 373 /* Non-tristate choice values of tristate choices must 374 * depend on the choice being set to Y. The choice 375 * values' dependencies were propagated to their 376 * properties above, so the change here must be re- 377 * propagated. 378 */ 379 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) { 380 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes); 381 menu->dep = expr_alloc_and(basedep, menu->dep); 382 for (prop = menu->sym->prop; prop; prop = prop->next) { 383 if (prop->menu != menu) 384 continue; 385 prop->visible.expr = expr_alloc_and(expr_copy(basedep), 386 prop->visible.expr); 387 } 388 } 389 menu_add_symbol(P_CHOICE, sym, NULL); 390 prop = sym_get_choice_prop(sym); 391 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr) 392 ; 393 *ep = expr_alloc_one(E_LIST, NULL); 394 (*ep)->right.sym = menu->sym; 395 } 396 if (menu->list && (!menu->prompt || !menu->prompt->text)) { 397 for (last_menu = menu->list; ; last_menu = last_menu->next) { 398 last_menu->parent = parent; 399 if (!last_menu->next) 400 break; 401 } 402 last_menu->next = menu->next; 403 menu->next = menu->list; 404 menu->list = NULL; 405 } 406 } 407 408 if (sym && !(sym->flags & SYMBOL_WARNED)) { 409 if (sym->type == S_UNKNOWN) 410 menu_warn(parent, "config symbol defined without type"); 411 412 if (sym_is_choice(sym) && !parent->prompt) 413 menu_warn(parent, "choice must have a prompt"); 414 415 /* Check properties connected to this symbol */ 416 sym_check_prop(sym); 417 sym->flags |= SYMBOL_WARNED; 418 } 419 420 if (sym && !sym_is_optional(sym) && parent->prompt) { 421 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr, 422 expr_alloc_and(parent->prompt->visible.expr, 423 expr_alloc_symbol(&symbol_mod))); 424 } 425 } 426 427 bool menu_has_prompt(struct menu *menu) 428 { 429 if (!menu->prompt) 430 return false; 431 return true; 432 } 433 434 bool menu_is_visible(struct menu *menu) 435 { 436 struct menu *child; 437 struct symbol *sym; 438 tristate visible; 439 440 if (!menu->prompt) 441 return false; 442 443 if (menu->visibility) { 444 if (expr_calc_value(menu->visibility) == no) 445 return no; 446 } 447 448 sym = menu->sym; 449 if (sym) { 450 sym_calc_value(sym); 451 visible = menu->prompt->visible.tri; 452 } else 453 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr); 454 455 if (visible != no) 456 return true; 457 458 if (!sym || sym_get_tristate_value(menu->sym) == no) 459 return false; 460 461 for (child = menu->list; child; child = child->next) { 462 if (menu_is_visible(child)) { 463 if (sym) 464 sym->flags |= SYMBOL_DEF_USER; 465 return true; 466 } 467 } 468 469 return false; 470 } 471 472 const char *menu_get_prompt(struct menu *menu) 473 { 474 if (menu->prompt) 475 return menu->prompt->text; 476 else if (menu->sym) 477 return menu->sym->name; 478 return NULL; 479 } 480 481 struct menu *menu_get_root_menu(struct menu *menu) 482 { 483 return &rootmenu; 484 } 485 486 struct menu *menu_get_parent_menu(struct menu *menu) 487 { 488 enum prop_type type; 489 490 for (; menu != &rootmenu; menu = menu->parent) { 491 type = menu->prompt ? menu->prompt->type : 0; 492 if (type == P_MENU) 493 break; 494 } 495 return menu; 496 } 497 498 bool menu_has_help(struct menu *menu) 499 { 500 return menu->help != NULL; 501 } 502 503 const char *menu_get_help(struct menu *menu) 504 { 505 if (menu->help) 506 return menu->help; 507 else 508 return ""; 509 } 510 511 static void get_prompt_str(struct gstr *r, struct property *prop) 512 { 513 int i, j; 514 struct menu *submenu[8], *menu; 515 516 str_printf(r, _("Prompt: %s\n"), _(prop->text)); 517 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name, 518 prop->menu->lineno); 519 if (!expr_is_yes(prop->visible.expr)) { 520 str_append(r, _(" Depends on: ")); 521 expr_gstr_print(prop->visible.expr, r); 522 str_append(r, "\n"); 523 } 524 menu = prop->menu->parent; 525 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) 526 submenu[i++] = menu; 527 if (i > 0) { 528 str_printf(r, _(" Location:\n")); 529 for (j = 4; --i >= 0; j += 2) { 530 menu = submenu[i]; 531 str_printf(r, "%*c-> %s", j, ' ', _(menu_get_prompt(menu))); 532 if (menu->sym) { 533 str_printf(r, " (%s [=%s])", menu->sym->name ? 534 menu->sym->name : _("<choice>"), 535 sym_get_string_value(menu->sym)); 536 } 537 str_append(r, "\n"); 538 } 539 } 540 } 541 542 void get_symbol_str(struct gstr *r, struct symbol *sym) 543 { 544 bool hit; 545 struct property *prop; 546 547 if (sym && sym->name) { 548 str_printf(r, "Symbol: %s [=%s]\n", sym->name, 549 sym_get_string_value(sym)); 550 str_printf(r, "Type : %s\n", sym_type_name(sym->type)); 551 if (sym->type == S_INT || sym->type == S_HEX) { 552 prop = sym_get_range_prop(sym); 553 if (prop) { 554 str_printf(r, "Range : "); 555 expr_gstr_print(prop->expr, r); 556 str_append(r, "\n"); 557 } 558 } 559 } 560 for_all_prompts(sym, prop) 561 get_prompt_str(r, prop); 562 hit = false; 563 for_all_properties(sym, prop, P_SELECT) { 564 if (!hit) { 565 str_append(r, " Selects: "); 566 hit = true; 567 } else 568 str_printf(r, " && "); 569 expr_gstr_print(prop->expr, r); 570 } 571 if (hit) 572 str_append(r, "\n"); 573 if (sym->rev_dep.expr) { 574 str_append(r, _(" Selected by: ")); 575 expr_gstr_print(sym->rev_dep.expr, r); 576 str_append(r, "\n"); 577 } 578 str_append(r, "\n\n"); 579 } 580 581 struct gstr get_relations_str(struct symbol **sym_arr) 582 { 583 struct symbol *sym; 584 struct gstr res = str_new(); 585 int i; 586 587 for (i = 0; sym_arr && (sym = sym_arr[i]); i++) 588 get_symbol_str(&res, sym); 589 if (!i) 590 str_append(&res, _("No matches found.\n")); 591 return res; 592 } 593 594 595 void menu_get_ext_help(struct menu *menu, struct gstr *help) 596 { 597 struct symbol *sym = menu->sym; 598 599 if (menu_has_help(menu)) { 600 if (sym->name) { 601 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name); 602 str_append(help, _(menu_get_help(menu))); 603 str_append(help, "\n"); 604 } 605 } else { 606 str_append(help, nohelp_text); 607 } 608 if (sym) 609 get_symbol_str(help, sym); 610 } 611