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 12 static const char nohelp_text[] = N_( 13 "There is no help available for this kernel 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 } 62 63 void menu_end_entry(void) 64 { 65 } 66 67 struct menu *menu_add_menu(void) 68 { 69 menu_end_entry(); 70 last_entry_ptr = ¤t_entry->list; 71 return current_menu = current_entry; 72 } 73 74 void menu_end_menu(void) 75 { 76 last_entry_ptr = ¤t_menu->next; 77 current_menu = current_menu->parent; 78 } 79 80 static struct expr *menu_check_dep(struct expr *e) 81 { 82 if (!e) 83 return e; 84 85 switch (e->type) { 86 case E_NOT: 87 e->left.expr = menu_check_dep(e->left.expr); 88 break; 89 case E_OR: 90 case E_AND: 91 e->left.expr = menu_check_dep(e->left.expr); 92 e->right.expr = menu_check_dep(e->right.expr); 93 break; 94 case E_SYMBOL: 95 /* change 'm' into 'm' && MODULES */ 96 if (e->left.sym == &symbol_mod) 97 return expr_alloc_and(e, expr_alloc_symbol(modules_sym)); 98 break; 99 default: 100 break; 101 } 102 return e; 103 } 104 105 void menu_add_dep(struct expr *dep) 106 { 107 current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep)); 108 } 109 110 void menu_set_type(int type) 111 { 112 struct symbol *sym = current_entry->sym; 113 114 if (sym->type == type) 115 return; 116 if (sym->type == S_UNKNOWN) { 117 sym->type = type; 118 return; 119 } 120 menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'", 121 sym->name ? sym->name : "<choice>", 122 sym_type_name(sym->type), sym_type_name(type)); 123 } 124 125 struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep) 126 { 127 struct property *prop = prop_alloc(type, current_entry->sym); 128 129 prop->menu = current_entry; 130 prop->expr = expr; 131 prop->visible.expr = menu_check_dep(dep); 132 133 if (prompt) { 134 if (isspace(*prompt)) { 135 prop_warn(prop, "leading whitespace ignored"); 136 while (isspace(*prompt)) 137 prompt++; 138 } 139 if (current_entry->prompt) 140 prop_warn(prop, "prompt redefined"); 141 current_entry->prompt = prop; 142 } 143 prop->text = prompt; 144 145 return prop; 146 } 147 148 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep) 149 { 150 return menu_add_prop(type, prompt, NULL, dep); 151 } 152 153 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep) 154 { 155 menu_add_prop(type, NULL, expr, dep); 156 } 157 158 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep) 159 { 160 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep); 161 } 162 163 void menu_add_option(int token, char *arg) 164 { 165 struct property *prop; 166 167 switch (token) { 168 case T_OPT_MODULES: 169 prop = prop_alloc(P_DEFAULT, modules_sym); 170 prop->expr = expr_alloc_symbol(current_entry->sym); 171 break; 172 case T_OPT_DEFCONFIG_LIST: 173 if (!sym_defconfig_list) 174 sym_defconfig_list = current_entry->sym; 175 else if (sym_defconfig_list != current_entry->sym) 176 zconf_error("trying to redefine defconfig symbol"); 177 break; 178 case T_OPT_ENV: 179 prop_add_env(arg); 180 break; 181 } 182 } 183 184 static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2) 185 { 186 return sym2->type == S_INT || sym2->type == S_HEX || 187 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name)); 188 } 189 190 static void sym_check_prop(struct symbol *sym) 191 { 192 struct property *prop; 193 struct symbol *sym2; 194 for (prop = sym->prop; prop; prop = prop->next) { 195 switch (prop->type) { 196 case P_DEFAULT: 197 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) && 198 prop->expr->type != E_SYMBOL) 199 prop_warn(prop, 200 "default for config symbol '%'" 201 " must be a single symbol", sym->name); 202 break; 203 case P_SELECT: 204 sym2 = prop_get_symbol(prop); 205 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE) 206 prop_warn(prop, 207 "config symbol '%s' uses select, but is " 208 "not boolean or tristate", sym->name); 209 else if (sym2->type != S_UNKNOWN && 210 sym2->type != S_BOOLEAN && 211 sym2->type != S_TRISTATE) 212 prop_warn(prop, 213 "'%s' has wrong type. 'select' only " 214 "accept arguments of boolean and " 215 "tristate type", sym2->name); 216 break; 217 case P_RANGE: 218 if (sym->type != S_INT && sym->type != S_HEX) 219 prop_warn(prop, "range is only allowed " 220 "for int or hex symbols"); 221 if (!menu_range_valid_sym(sym, prop->expr->left.sym) || 222 !menu_range_valid_sym(sym, prop->expr->right.sym)) 223 prop_warn(prop, "range is invalid"); 224 break; 225 default: 226 ; 227 } 228 } 229 } 230 231 void menu_finalize(struct menu *parent) 232 { 233 struct menu *menu, *last_menu; 234 struct symbol *sym; 235 struct property *prop; 236 struct expr *parentdep, *basedep, *dep, *dep2, **ep; 237 238 sym = parent->sym; 239 if (parent->list) { 240 if (sym && sym_is_choice(sym)) { 241 if (sym->type == S_UNKNOWN) { 242 /* find the first choice value to find out choice type */ 243 current_entry = parent; 244 for (menu = parent->list; menu; menu = menu->next) { 245 if (menu->sym && menu->sym->type != S_UNKNOWN) { 246 menu_set_type(menu->sym->type); 247 break; 248 } 249 } 250 } 251 /* set the type of the remaining choice values */ 252 for (menu = parent->list; menu; menu = menu->next) { 253 current_entry = menu; 254 if (menu->sym && menu->sym->type == S_UNKNOWN) 255 menu_set_type(sym->type); 256 } 257 parentdep = expr_alloc_symbol(sym); 258 } else if (parent->prompt) 259 parentdep = parent->prompt->visible.expr; 260 else 261 parentdep = parent->dep; 262 263 for (menu = parent->list; menu; menu = menu->next) { 264 basedep = expr_transform(menu->dep); 265 basedep = expr_alloc_and(expr_copy(parentdep), basedep); 266 basedep = expr_eliminate_dups(basedep); 267 menu->dep = basedep; 268 if (menu->sym) 269 prop = menu->sym->prop; 270 else 271 prop = menu->prompt; 272 for (; prop; prop = prop->next) { 273 if (prop->menu != menu) 274 continue; 275 dep = expr_transform(prop->visible.expr); 276 dep = expr_alloc_and(expr_copy(basedep), dep); 277 dep = expr_eliminate_dups(dep); 278 if (menu->sym && menu->sym->type != S_TRISTATE) 279 dep = expr_trans_bool(dep); 280 prop->visible.expr = dep; 281 if (prop->type == P_SELECT) { 282 struct symbol *es = prop_get_symbol(prop); 283 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr, 284 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep))); 285 } 286 } 287 } 288 for (menu = parent->list; menu; menu = menu->next) 289 menu_finalize(menu); 290 } else if (sym) { 291 basedep = parent->prompt ? parent->prompt->visible.expr : NULL; 292 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no); 293 basedep = expr_eliminate_dups(expr_transform(basedep)); 294 last_menu = NULL; 295 for (menu = parent->next; menu; menu = menu->next) { 296 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep; 297 if (!expr_contains_symbol(dep, sym)) 298 break; 299 if (expr_depends_symbol(dep, sym)) 300 goto next; 301 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no); 302 dep = expr_eliminate_dups(expr_transform(dep)); 303 dep2 = expr_copy(basedep); 304 expr_eliminate_eq(&dep, &dep2); 305 expr_free(dep); 306 if (!expr_is_yes(dep2)) { 307 expr_free(dep2); 308 break; 309 } 310 expr_free(dep2); 311 next: 312 menu_finalize(menu); 313 menu->parent = parent; 314 last_menu = menu; 315 } 316 if (last_menu) { 317 parent->list = parent->next; 318 parent->next = last_menu->next; 319 last_menu->next = NULL; 320 } 321 } 322 for (menu = parent->list; menu; menu = menu->next) { 323 if (sym && sym_is_choice(sym) && 324 menu->sym && !sym_is_choice_value(menu->sym)) { 325 current_entry = menu; 326 menu->sym->flags |= SYMBOL_CHOICEVAL; 327 if (!menu->prompt) 328 menu_warn(menu, "choice value must have a prompt"); 329 for (prop = menu->sym->prop; prop; prop = prop->next) { 330 if (prop->type == P_DEFAULT) 331 prop_warn(prop, "defaults for choice " 332 "values not supported"); 333 if (prop->menu == menu) 334 continue; 335 if (prop->type == P_PROMPT && 336 prop->menu->parent->sym != sym) 337 prop_warn(prop, "choice value used outside its choice group"); 338 } 339 /* Non-tristate choice values of tristate choices must 340 * depend on the choice being set to Y. The choice 341 * values' dependencies were propagated to their 342 * properties above, so the change here must be re- 343 * propagated. 344 */ 345 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) { 346 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes); 347 menu->dep = expr_alloc_and(basedep, menu->dep); 348 for (prop = menu->sym->prop; prop; prop = prop->next) { 349 if (prop->menu != menu) 350 continue; 351 prop->visible.expr = expr_alloc_and(expr_copy(basedep), 352 prop->visible.expr); 353 } 354 } 355 menu_add_symbol(P_CHOICE, sym, NULL); 356 prop = sym_get_choice_prop(sym); 357 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr) 358 ; 359 *ep = expr_alloc_one(E_LIST, NULL); 360 (*ep)->right.sym = menu->sym; 361 } 362 if (menu->list && (!menu->prompt || !menu->prompt->text)) { 363 for (last_menu = menu->list; ; last_menu = last_menu->next) { 364 last_menu->parent = parent; 365 if (!last_menu->next) 366 break; 367 } 368 last_menu->next = menu->next; 369 menu->next = menu->list; 370 menu->list = NULL; 371 } 372 } 373 374 if (sym && !(sym->flags & SYMBOL_WARNED)) { 375 if (sym->type == S_UNKNOWN) 376 menu_warn(parent, "config symbol defined without type"); 377 378 if (sym_is_choice(sym) && !parent->prompt) 379 menu_warn(parent, "choice must have a prompt"); 380 381 /* Check properties connected to this symbol */ 382 sym_check_prop(sym); 383 sym->flags |= SYMBOL_WARNED; 384 } 385 386 if (sym && !sym_is_optional(sym) && parent->prompt) { 387 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr, 388 expr_alloc_and(parent->prompt->visible.expr, 389 expr_alloc_symbol(&symbol_mod))); 390 } 391 } 392 393 bool menu_is_visible(struct menu *menu) 394 { 395 struct menu *child; 396 struct symbol *sym; 397 tristate visible; 398 399 if (!menu->prompt) 400 return false; 401 sym = menu->sym; 402 if (sym) { 403 sym_calc_value(sym); 404 visible = menu->prompt->visible.tri; 405 } else 406 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr); 407 408 if (visible != no) 409 return true; 410 if (!sym || sym_get_tristate_value(menu->sym) == no) 411 return false; 412 413 for (child = menu->list; child; child = child->next) 414 if (menu_is_visible(child)) 415 return true; 416 return false; 417 } 418 419 const char *menu_get_prompt(struct menu *menu) 420 { 421 if (menu->prompt) 422 return menu->prompt->text; 423 else if (menu->sym) 424 return menu->sym->name; 425 return NULL; 426 } 427 428 struct menu *menu_get_root_menu(struct menu *menu) 429 { 430 return &rootmenu; 431 } 432 433 struct menu *menu_get_parent_menu(struct menu *menu) 434 { 435 enum prop_type type; 436 437 for (; menu != &rootmenu; menu = menu->parent) { 438 type = menu->prompt ? menu->prompt->type : 0; 439 if (type == P_MENU) 440 break; 441 } 442 return menu; 443 } 444 445 bool menu_has_help(struct menu *menu) 446 { 447 return menu->help != NULL; 448 } 449 450 const char *menu_get_help(struct menu *menu) 451 { 452 if (menu->help) 453 return menu->help; 454 else 455 return ""; 456 } 457 458 static void get_prompt_str(struct gstr *r, struct property *prop) 459 { 460 int i, j; 461 struct menu *submenu[8], *menu; 462 463 str_printf(r, _("Prompt: %s\n"), _(prop->text)); 464 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name, 465 prop->menu->lineno); 466 if (!expr_is_yes(prop->visible.expr)) { 467 str_append(r, _(" Depends on: ")); 468 expr_gstr_print(prop->visible.expr, r); 469 str_append(r, "\n"); 470 } 471 menu = prop->menu->parent; 472 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) 473 submenu[i++] = menu; 474 if (i > 0) { 475 str_printf(r, _(" Location:\n")); 476 for (j = 4; --i >= 0; j += 2) { 477 menu = submenu[i]; 478 str_printf(r, "%*c-> %s", j, ' ', _(menu_get_prompt(menu))); 479 if (menu->sym) { 480 str_printf(r, " (%s [=%s])", menu->sym->name ? 481 menu->sym->name : _("<choice>"), 482 sym_get_string_value(menu->sym)); 483 } 484 str_append(r, "\n"); 485 } 486 } 487 } 488 489 void get_symbol_str(struct gstr *r, struct symbol *sym) 490 { 491 bool hit; 492 struct property *prop; 493 494 if (sym && sym->name) 495 str_printf(r, "Symbol: %s [=%s]\n", sym->name, 496 sym_get_string_value(sym)); 497 for_all_prompts(sym, prop) 498 get_prompt_str(r, prop); 499 hit = false; 500 for_all_properties(sym, prop, P_SELECT) { 501 if (!hit) { 502 str_append(r, " Selects: "); 503 hit = true; 504 } else 505 str_printf(r, " && "); 506 expr_gstr_print(prop->expr, r); 507 } 508 if (hit) 509 str_append(r, "\n"); 510 if (sym->rev_dep.expr) { 511 str_append(r, _(" Selected by: ")); 512 expr_gstr_print(sym->rev_dep.expr, r); 513 str_append(r, "\n"); 514 } 515 str_append(r, "\n\n"); 516 } 517 518 void menu_get_ext_help(struct menu *menu, struct gstr *help) 519 { 520 struct symbol *sym = menu->sym; 521 522 if (menu_has_help(menu)) { 523 if (sym->name) { 524 str_printf(help, "CONFIG_%s:\n\n", sym->name); 525 str_append(help, _(menu_get_help(menu))); 526 str_append(help, "\n"); 527 } 528 } else { 529 str_append(help, nohelp_text); 530 } 531 if (sym) 532 get_symbol_str(help, sym); 533 } 534