adk/config/menu.c

   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 = &current_entry->list;
  73         return current_menu = current_entry;
  74 }
  75
  76 void menu_end_menu(void)
  77 {
  78         last_entry_ptr = &current_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,
 123                 "ignoring type redefinition of '%s' 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                                 struct expr *dup_expr;
 151
 152                                 if (!menu->visibility)
 153                                         continue;
 154                                 /*
 155                                  * Do not add a reference to the
 156                                  * menu's visibility expression but
 157                                  * use a copy of it.  Otherwise the
 158                                  * expression reduction functions
 159                                  * will modify expressions that have
 160                                  * multiple references which can
 161                                  * cause unwanted side effects.
 162                                  */
 163                                 dup_expr = expr_copy(menu->visibility);
 164
 165                                 prop->visible.expr
 166                                         = expr_alloc_and(prop->visible.expr,
 167                                                          dup_expr);
 168                         }
 169                 }
 170
 171                 current_entry->prompt = prop;
 172         }
 173         prop->text = prompt;
 174
 175         return prop;
 176 }
 177
 178 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
 179 {
 180         return menu_add_prop(type, prompt, NULL, dep);
 181 }
 182
 183 void menu_add_visibility(struct expr *expr)
 184 {
 185         current_entry->visibility = expr_alloc_and(current_entry->visibility,
 186             expr);
 187 }
 188
 189 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
 190 {
 191         menu_add_prop(type, NULL, expr, dep);
 192 }
 193
 194 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
 195 {
 196         menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
 197 }
 198
 199 void menu_add_select(struct symbol *sym, struct expr *value, struct expr *dep)
 200 {
 201         struct property *p;
 202
 203         p = menu_add_prop(P_SELECT, NULL, expr_alloc_symbol(sym), dep);
 204         p->value = value;
 205 }
 206
 207 void menu_add_option(int token, char *arg)
 208 {
 209         switch (token) {
 210         case T_OPT_MODULES:
 211                 if (modules_sym)
 212                         zconf_error("symbol '%s' redefines option 'modules'"
 213                                     " already defined by symbol '%s'",
 214                                     current_entry->sym->name,
 215                                     modules_sym->name
 216                                     );
 217                 modules_sym = current_entry->sym;
 218                 break;
 219         case T_OPT_DEFCONFIG_LIST:
 220                 if (!sym_defconfig_list)
 221                         sym_defconfig_list = current_entry->sym;
 222                 else if (sym_defconfig_list != current_entry->sym)
 223                         zconf_error("trying to redefine defconfig symbol");
 224                 break;
 225         case T_OPT_ENV:
 226                 prop_add_env(arg);
 227                 break;
 228         case T_OPT_ALLNOCONFIG_Y:
 229                 current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
 230                 break;
 231         }
 232 }
 233
 234 static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
 235 {
 236         return sym2->type == S_INT || sym2->type == S_HEX ||
 237                (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
 238 }
 239
 240 static void sym_check_prop(struct symbol *sym)
 241 {
 242         struct property *prop;
 243         struct symbol *sym2;
 244         for (prop = sym->prop; prop; prop = prop->next) {
 245                 switch (prop->type) {
 246                 case P_DEFAULT:
 247                         if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
 248                             prop->expr->type != E_SYMBOL)
 249                                 prop_warn(prop,
 250                                     "default for config symbol '%s'"
 251                                     " must be a single symbol", sym->name);
 252                         if (prop->expr->type != E_SYMBOL)
 253                                 break;
 254                         sym2 = prop_get_symbol(prop);
 255                         if (sym->type == S_HEX || sym->type == S_INT) {
 256                                 if (!menu_validate_number(sym, sym2))
 257                                         prop_warn(prop,
 258                                             "'%s': number is invalid",
 259                                             sym->name);
 260                         }
 261                         break;
 262                 case P_SELECT:
 263                         sym2 = prop_get_symbol(prop);
 264                         if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
 265                                 prop_warn(prop,
 266                                     "config symbol '%s' uses select, but is "
 267                                     "not boolean or tristate", sym->name);
 268                         else if (prop->value == NULL &&
 269                                  sym2->type != S_UNKNOWN &&
 270                                  sym2->type != S_BOOLEAN &&
 271                                  sym2->type != S_TRISTATE)
 272                                 prop_warn(prop,
 273                                     "'%s' has wrong type. 'select' without a "
 274                                     "value only accepts arguments of boolean "
 275                                     "and tristate type", sym2->name);
 276                         else if (prop->value != NULL &&
 277                                  (sym2->type == S_INT ||
 278                                   sym2->type == S_HEX ||
 279                                   sym2->type == S_STRING) &&
 280                                  prop->value->type != E_SYMBOL)
 281                                 prop_warn(prop,
 282                                     "select value for config symbol '%s'"
 283                                     " must be a single symbol", sym2->name);
 284                         break;
 285                 case P_RANGE:
 286                         if (sym->type != S_INT && sym->type != S_HEX)
 287                                 prop_warn(prop, "range is only allowed "
 288                                                 "for int or hex symbols");
 289                         if (!menu_validate_number(sym, prop->expr->left.sym) ||
 290                             !menu_validate_number(sym, prop->expr->right.sym))
 291                                 prop_warn(prop, "range is invalid");
 292                         break;
 293                 default:
 294                         ;
 295                 }
 296         }
 297 }
 298
 299 static void finalize_select(struct symbol *sym, struct property *prop,
 300                 struct expr *dep)
 301 {
 302         struct symbol *es = prop_get_symbol(prop);
 303         struct expr_select_value *esv;
 304
 305         if (prop->value) {
 306                 esv = malloc(sizeof *esv);
 307                 esv->expr = expr_alloc_and(expr_alloc_symbol(sym),
 308                                 expr_copy(dep));
 309                 esv->value = prop->value;
 310                 esv->next = es->val_dep;
 311                 es->val_dep = esv;
 312         } else {
 313                 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
 314                         expr_alloc_and(expr_alloc_symbol(sym), expr_copy(dep)));
 315         }
 316 }
 317
 318 void menu_finalize(struct menu *parent)
 319 {
 320         struct menu *menu, *last_menu;
 321         struct symbol *sym;
 322         struct property *prop;
 323         struct expr *parentdep, *basedep, *dep, *dep2, **ep;
 324
 325         sym = parent->sym;
 326         if (parent->list) {
 327                 if (sym && sym_is_choice(sym)) {
 328                         if (sym->type == S_UNKNOWN) {
 329                                 /* find the first choice value to find out choice type */
 330                                 current_entry = parent;
 331                                 for (menu = parent->list; menu; menu = menu->next) {
 332                                         if (menu->sym && menu->sym->type != S_UNKNOWN) {
 333                                                 menu_set_type(menu->sym->type);
 334                                                 break;
 335                                         }
 336                                 }
 337                         }
 338                         /* set the type of the remaining choice values */
 339                         for (menu = parent->list; menu; menu = menu->next) {
 340                                 current_entry = menu;
 341                                 if (menu->sym && menu->sym->type == S_UNKNOWN)
 342                                         menu_set_type(sym->type);
 343                         }
 344                         parentdep = expr_alloc_symbol(sym);
 345                 } else if (parent->prompt)
 346                         parentdep = parent->prompt->visible.expr;
 347                 else
 348                         parentdep = parent->dep;
 349
 350                 for (menu = parent->list; menu; menu = menu->next) {
 351                         basedep = expr_transform(menu->dep);
 352                         basedep = expr_alloc_and(expr_copy(parentdep), basedep);
 353                         basedep = expr_eliminate_dups(basedep);
 354                         menu->dep = basedep;
 355                         if (menu->sym)
 356                                 prop = menu->sym->prop;
 357                         else
 358                                 prop = menu->prompt;
 359                         for (; prop; prop = prop->next) {
 360                                 if (prop->menu != menu)
 361                                         continue;
 362                                 dep = expr_transform(prop->visible.expr);
 363                                 dep = expr_alloc_and(expr_copy(basedep), dep);
 364                                 dep = expr_eliminate_dups(dep);
 365                                 if (menu->sym && menu->sym->type != S_TRISTATE)
 366                                         dep = expr_trans_bool(dep);
 367                                 prop->visible.expr = dep;
 368                                 if (prop->type == P_SELECT)
 369                                         finalize_select(menu->sym, prop, dep);
 370                         }
 371                 }
 372                 for (menu = parent->list; menu; menu = menu->next)
 373                         menu_finalize(menu);
 374         } else if (sym) {
 375                 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
 376                 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
 377                 basedep = expr_eliminate_dups(expr_transform(basedep));
 378                 last_menu = NULL;
 379                 for (menu = parent->next; menu; menu = menu->next) {
 380                         dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
 381                         if (!expr_contains_symbol(dep, sym))
 382                                 break;
 383                         if (expr_depends_symbol(dep, sym))
 384                                 goto next;
 385                         dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
 386                         dep = expr_eliminate_dups(expr_transform(dep));
 387                         dep2 = expr_copy(basedep);
 388                         expr_eliminate_eq(&dep, &dep2);
 389                         expr_free(dep);
 390                         if (!expr_is_yes(dep2)) {
 391                                 expr_free(dep2);
 392                                 break;
 393                         }
 394                         expr_free(dep2);
 395                 next:
 396                         menu_finalize(menu);
 397                         menu->parent = parent;
 398                         last_menu = menu;
 399                 }
 400                 if (last_menu) {
 401                         parent->list = parent->next;
 402                         parent->next = last_menu->next;
 403                         last_menu->next = NULL;
 404                 }
 405
 406                 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
 407         }
 408         for (menu = parent->list; menu; menu = menu->next) {
 409                 if (sym && sym_is_choice(sym) &&
 410                     menu->sym && !sym_is_choice_value(menu->sym)) {
 411                         current_entry = menu;
 412                         menu->sym->flags |= SYMBOL_CHOICEVAL;
 413                         if (!menu->prompt)
 414                                 menu_warn(menu, "choice value must have a prompt");
 415                         for (prop = menu->sym->prop; prop; prop = prop->next) {
 416                                 if (prop->type == P_DEFAULT)
 417                                         prop_warn(prop, "defaults for choice "
 418                                                   "values not supported");
 419                                 if (prop->menu == menu)
 420                                         continue;
 421                                 if (prop->type == P_PROMPT &&
 422                                     prop->menu->parent->sym != sym)
 423                                         prop_warn(prop, "choice value used outside its choice group");
 424                         }
 425                         /* Non-tristate choice values of tristate choices must
 426                          * depend on the choice being set to Y. The choice
 427                          * values' dependencies were propagated to their
 428                          * properties above, so the change here must be re-
 429                          * propagated.
 430                          */
 431                         if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
 432                                 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
 433                                 menu->dep = expr_alloc_and(basedep, menu->dep);
 434                                 for (prop = menu->sym->prop; prop; prop = prop->next) {
 435                                         if (prop->menu != menu)
 436                                                 continue;
 437                                         prop->visible.expr = expr_alloc_and(expr_copy(basedep),
 438                                                                             prop->visible.expr);
 439                                 }
 440                         }
 441                         menu_add_symbol(P_CHOICE, sym, NULL);
 442                         prop = sym_get_choice_prop(sym);
 443                         for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
 444                                 ;
 445                         *ep = expr_alloc_one(E_LIST, NULL);
 446                         (*ep)->right.sym = menu->sym;
 447                 }
 448                 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
 449                         for (last_menu = menu->list; ; last_menu = last_menu->next) {
 450                                 last_menu->parent = parent;
 451                                 if (!last_menu->next)
 452                                         break;
 453                         }
 454                         last_menu->next = menu->next;
 455                         menu->next = menu->list;
 456                         menu->list = NULL;
 457                 }
 458         }
 459
 460         if (sym && !(sym->flags & SYMBOL_WARNED)) {
 461                 if (sym->type == S_UNKNOWN)
 462                         menu_warn(parent, "config symbol defined without type");
 463
 464                 if (sym_is_choice(sym) && !parent->prompt)
 465                         menu_warn(parent, "choice must have a prompt");
 466
 467                 /* Check properties connected to this symbol */
 468                 sym_check_prop(sym);
 469                 sym->flags |= SYMBOL_WARNED;
 470         }
 471
 472         if (sym && !sym_is_optional(sym) && parent->prompt) {
 473                 struct expr_select_value *esv;
 474
 475                 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
 476                                 expr_alloc_and(parent->prompt->visible.expr,
 477                                         expr_alloc_symbol(&symbol_mod)));
 478                 for (esv = sym->val_dep; esv; esv = esv->next)
 479                         esv->expr = expr_alloc_or(esv->expr,
 480                                 expr_alloc_and(parent->prompt->visible.expr,
 481                                         expr_alloc_symbol(&symbol_mod)));
 482         }
 483 }
 484
 485 bool menu_has_prompt(struct menu *menu)
 486 {
 487         if (!menu->prompt)
 488                 return false;
 489         return true;
 490 }
 491
 492 /*
 493  * Determine if a menu is empty.
 494  * A menu is considered empty if it contains no or only
 495  * invisible entries.
 496  */
 497 bool menu_is_empty(struct menu *menu)
 498 {
 499         struct menu *child;
 500
 501         for (child = menu->list; child; child = child->next) {
 502                 if (menu_is_visible(child))
 503                         return(false);
 504         }
 505         return(true);
 506 }
 507
 508 bool menu_is_visible(struct menu *menu)
 509 {
 510         struct menu *child;
 511         struct symbol *sym;
 512         tristate visible;
 513
 514         if (!menu->prompt)
 515                 return false;
 516
 517         if (menu->visibility) {
 518                 if (expr_calc_value(menu->visibility) == no)
 519                         return no;
 520         }
 521
 522         sym = menu->sym;
 523         if (sym) {
 524                 sym_calc_value(sym);
 525                 visible = menu->prompt->visible.tri;
 526         } else
 527                 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
 528
 529         if (visible != no)
 530                 return true;
 531
 532         if (!sym || sym_get_tristate_value(menu->sym) == no)
 533                 return false;
 534
 535         for (child = menu->list; child; child = child->next) {
 536                 if (menu_is_visible(child)) {
 537                         if (sym)
 538                                 sym->flags |= SYMBOL_DEF_USER;
 539                         return true;
 540                 }
 541         }
 542
 543         return false;
 544 }
 545
 546 const char *menu_get_prompt(struct menu *menu)
 547 {
 548         if (menu->prompt)
 549                 return menu->prompt->text;
 550         else if (menu->sym)
 551                 return menu->sym->name;
 552         return NULL;
 553 }
 554
 555 struct menu *menu_get_root_menu(struct menu *menu)
 556 {
 557         return &rootmenu;
 558 }
 559
 560 struct menu *menu_get_parent_menu(struct menu *menu)
 561 {
 562         enum prop_type type;
 563
 564         for (; menu != &rootmenu; menu = menu->parent) {
 565                 type = menu->prompt ? menu->prompt->type : 0;
 566                 if (type == P_MENU)
 567                         break;
 568         }
 569         return menu;
 570 }
 571
 572 bool menu_has_help(struct menu *menu)
 573 {
 574         return menu->help != NULL;
 575 }
 576
 577 const char *menu_get_help(struct menu *menu)
 578 {
 579         if (menu->help)
 580                 return menu->help;
 581         else
 582                 return "";
 583 }
 584
 585 static void get_prompt_str(struct gstr *r, struct property *prop,
 586                            struct list_head *head)
 587 {
 588         int i, j;
 589         struct menu *submenu[8], *menu, *location = NULL;
 590         struct jump_key *jump;
 591
 592         str_printf(r, _("Prompt: %s\n"), _(prop->text));
 593         menu = prop->menu->parent;
 594         for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
 595                 bool accessible = menu_is_visible(menu);
 596
 597                 submenu[i++] = menu;
 598                 if (location == NULL && accessible)
 599                         location = menu;
 600         }
 601         if (head && location) {
 602                 jump = xmalloc(sizeof(struct jump_key));
 603
 604                 if (menu_is_visible(prop->menu)) {
 605                         /*
 606                          * There is not enough room to put the hint at the
 607                          * beginning of the "Prompt" line. Put the hint on the
 608                          * last "Location" line even when it would belong on
 609                          * the former.
 610                          */
 611                         jump->target = prop->menu;
 612                 } else
 613                         jump->target = location;
 614
 615                 if (list_empty(head))
 616                         jump->index = 0;
 617                 else
 618                         jump->index = list_entry(head->prev, struct jump_key,
 619                                                  entries)->index + 1;
 620
 621                 list_add_tail(&jump->entries, head);
 622         }
 623
 624         if (i > 0) {
 625                 str_printf(r, _("  Location:\n"));
 626                 for (j = 4; --i >= 0; j += 2) {
 627                         menu = submenu[i];
 628                         if (head && location && menu == location)
 629                                 jump->offset = strlen(r->s);
 630                         str_printf(r, "%*c-> %s", j, ' ',
 631                                    _(menu_get_prompt(menu)));
 632                         if (menu->sym) {
 633                                 str_printf(r, " (%s [=%s])", menu->sym->name ?
 634                                         menu->sym->name : _("<choice>"),
 635                                         sym_get_string_value(menu->sym));
 636                         }
 637                         str_append(r, "\n");
 638                 }
 639         }
 640 }
 641
 642 /*
 643  * get property of type P_SYMBOL
 644  */
 645 static struct property *get_symbol_prop(struct symbol *sym)
 646 {
 647         struct property *prop = NULL;
 648
 649         for_all_properties(sym, prop, P_SYMBOL)
 650                 break;
 651         return prop;
 652 }
 653
 654 /*
 655  * head is optional and may be NULL
 656  */
 657 void get_symbol_str(struct gstr *r, struct symbol *sym,
 658                     struct list_head *head)
 659 {
 660         bool hit;
 661         struct property *prop;
 662         struct expr_select_value *esv;
 663
 664         if (sym && sym->name) {
 665                 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
 666                            sym_get_string_value(sym));
 667                 str_printf(r, "Type  : %s\n", sym_type_name(sym->type));
 668                 if (sym->type == S_INT || sym->type == S_HEX) {
 669                         prop = sym_get_range_prop(sym);
 670                         if (prop) {
 671                                 str_printf(r, "Range : ");
 672                                 expr_gstr_print(prop->expr, r);
 673                                 str_append(r, "\n");
 674                         }
 675                 }
 676         }
 677         for_all_prompts(sym, prop)
 678                 get_prompt_str(r, prop, head);
 679
 680         prop = get_symbol_prop(sym);
 681         if (prop) {
 682                 str_printf(r, _("  Defined at %s:%d\n"), prop->menu->file->name,
 683                         prop->menu->lineno);
 684                 if (!expr_is_yes(prop->visible.expr)) {
 685                         str_append(r, _("  Depends on: "));
 686                         expr_gstr_print(prop->visible.expr, r);
 687                         str_append(r, "\n");
 688                 }
 689         }
 690
 691         hit = false;
 692         for_all_properties(sym, prop, P_SELECT) {
 693                 if (!hit) {
 694                         str_append(r, "  Selects: ");
 695                         hit = true;
 696                 } else
 697                         str_printf(r, " && ");
 698                 expr_gstr_print(prop->expr, r);
 699                 if (prop->value) {
 700                         str_printf(r, " (value=");
 701                         expr_gstr_print(prop->value, r);
 702                         str_printf(r, ")");
 703                 }
 704         }
 705         if (hit)
 706                 str_append(r, "\n");
 707         if (sym->rev_dep.expr) {
 708                 str_append(r, _("  Selected by: "));
 709                 expr_gstr_print(sym->rev_dep.expr, r);
 710                 str_append(r, "\n");
 711         }
 712         for (esv = sym->val_dep; esv; esv = esv->next) {
 713                 str_append(r, "  Selected by: ");
 714                 expr_gstr_print(esv->expr, r);
 715                 str_append(r, " with value: ");
 716                 expr_gstr_print(esv->value, r);
 717                 str_append(r, "\n");
 718         }
 719         str_append(r, "\n\n");
 720 }
 721
 722 struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
 723 {
 724         struct symbol *sym;
 725         struct gstr res = str_new();
 726         int i;
 727
 728         for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
 729                 get_symbol_str(&res, sym, head);
 730         if (!i)
 731                 str_append(&res, _("No matches found.\n"));
 732         return res;
 733 }
 734
 735
 736 void menu_get_ext_help(struct menu *menu, struct gstr *help)
 737 {
 738         struct symbol *sym = menu->sym;
 739         const char *help_text = nohelp_text;
 740
 741         if (menu_has_help(menu)) {
 742                 if (sym->name)
 743                         str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
 744                 help_text = menu_get_help(menu);
 745         }
 746         str_printf(help, "%s\n", _(help_text));
 747         if (sym)
 748                 get_symbol_str(help, sym, NULL);
 749 }