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 = 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_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 } 211 212 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 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 } 261 262 void 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 } 425 426 bool menu_has_prompt(struct menu *menu) 427 { 428 if (!menu->prompt) 429 return false; 430 return true; 431 } 432 433 bool 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 } 470 471 const 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 } 479 480 struct menu *menu_get_root_menu(struct menu *menu) 481 { 482 return &rootmenu; 483 } 484 485 struct 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 } 496 497 bool menu_has_help(struct menu *menu) 498 { 499 return menu->help != NULL; 500 } 501 502 const char *menu_get_help(struct menu *menu) 503 { 504 if (menu->help) 505 return menu->help; 506 else 507 return ""; 508 } 509 510 static 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 } 540 541 void 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 } 579 580 struct 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 } 592 593 594 void 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 } 608