openwrt/package/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 <stdlib.h>
   7 #include <string.h>
   8
   9 #define LKC_DIRECT_LINK
  10 #include "lkc.h"
  11
  12 struct menu rootmenu;
  13 struct menu *current_menu, *current_entry;
  14 static struct menu **last_entry_ptr;
  15
  16 struct file *file_list;
  17 struct file *current_file;
  18
  19 static void menu_warn(struct menu *menu, const char *fmt, ...)
  20 {
  21         va_list ap;
  22         va_start(ap, fmt);
  23         fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno);
  24         vfprintf(stderr, fmt, ap);
  25         fprintf(stderr, "\n");
  26         va_end(ap);
  27 }
  28
  29 static void prop_warn(struct property *prop, const char *fmt, ...)
  30 {
  31         va_list ap;
  32         va_start(ap, fmt);
  33         fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno);
  34         vfprintf(stderr, fmt, ap);
  35         fprintf(stderr, "\n");
  36         va_end(ap);
  37 }
  38
  39 void menu_init(void)
  40 {
  41         current_entry = current_menu = &rootmenu;
  42         last_entry_ptr = &rootmenu.list;
  43 }
  44
  45 void menu_add_entry(struct symbol *sym)
  46 {
  47         struct menu *menu;
  48
  49         menu = malloc(sizeof(*menu));
  50         memset(menu, 0, sizeof(*menu));
  51         menu->sym = sym;
  52         menu->parent = current_menu;
  53         menu->file = current_file;
  54         menu->lineno = zconf_lineno();
  55
  56         *last_entry_ptr = menu;
  57         last_entry_ptr = &menu->next;
  58         current_entry = menu;
  59 }
  60
  61 void menu_end_entry(void)
  62 {
  63 }
  64
  65 void menu_add_menu(void)
  66 {
  67         current_menu = current_entry;
  68         last_entry_ptr = &current_entry->list;
  69 }
  70
  71 void menu_end_menu(void)
  72 {
  73         last_entry_ptr = &current_menu->next;
  74         current_menu = current_menu->parent;
  75 }
  76
  77 struct expr *menu_check_dep(struct expr *e)
  78 {
  79         if (!e)
  80                 return e;
  81
  82         switch (e->type) {
  83         case E_NOT:
  84                 e->left.expr = menu_check_dep(e->left.expr);
  85                 break;
  86         case E_OR:
  87         case E_AND:
  88                 e->left.expr = menu_check_dep(e->left.expr);
  89                 e->right.expr = menu_check_dep(e->right.expr);
  90                 break;
  91         case E_SYMBOL:
  92                 /* change 'm' into 'm' && MODULES */
  93                 if (e->left.sym == &symbol_mod)
  94                         return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
  95                 break;
  96         default:
  97                 break;
  98         }
  99         return e;
 100 }
 101
 102 void menu_add_dep(struct expr *dep)
 103 {
 104         current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
 105 }
 106
 107 void menu_set_type(int type)
 108 {
 109         struct symbol *sym = current_entry->sym;
 110
 111         if (sym->type == type)
 112                 return;
 113         if (sym->type == S_UNKNOWN) {
 114                 sym->type = type;
 115                 return;
 116         }
 117         menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'\n",
 118             sym->name ? sym->name : "<choice>",
 119             sym_type_name(sym->type), sym_type_name(type));
 120 }
 121
 122 struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
 123 {
 124         struct property *prop = prop_alloc(type, current_entry->sym);
 125
 126         prop->menu = current_entry;
 127         prop->text = prompt;
 128         prop->expr = expr;
 129         prop->visible.expr = menu_check_dep(dep);
 130
 131         if (prompt) {
 132                 if (current_entry->prompt)
 133                         menu_warn(current_entry, "prompt redefined\n");
 134                 current_entry->prompt = prop;
 135         }
 136
 137         return prop;
 138 }
 139
 140 void menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
 141 {
 142         menu_add_prop(type, prompt, NULL, dep);
 143 }
 144
 145 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
 146 {
 147         menu_add_prop(type, NULL, expr, dep);
 148 }
 149
 150 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
 151 {
 152         menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
 153 }
 154
 155 void sym_check_prop(struct symbol *sym)
 156 {
 157         struct property *prop;
 158         struct symbol *sym2;
 159         for (prop = sym->prop; prop; prop = prop->next) {
 160                 switch (prop->type) {
 161                 case P_DEFAULT:
 162                         if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
 163                             prop->expr->type != E_SYMBOL)
 164                                 prop_warn(prop,
 165                                     "default for config symbol '%'"
 166                                     " must be a single symbol", sym->name);
 167                         break;
 168                 case P_SELECT:
 169                         sym2 = prop_get_symbol(prop);
 170                         if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
 171                                 prop_warn(prop,
 172                                     "config symbol '%s' uses select, but is "
 173                                     "not boolean or tristate", sym->name);
 174                         else if (sym2->type == S_UNKNOWN)
 175                                 prop_warn(prop,
 176                                     "'select' used by config symbol '%s' "
 177                                     "refer to undefined symbol '%s'",
 178                                     sym->name, sym2->name);
 179                         else if (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE)
 180                                 prop_warn(prop,
 181                                     "'%s' has wrong type. 'select' only "
 182                                     "accept arguments of boolean and "
 183                                     "tristate type", sym2->name);
 184                         break;
 185                 case P_RANGE:
 186                         if (sym->type != S_INT && sym->type != S_HEX)
 187                                 prop_warn(prop, "range is only allowed "
 188                                                 "for int or hex symbols");
 189                         if (!sym_string_valid(sym, prop->expr->left.sym->name) ||
 190                             !sym_string_valid(sym, prop->expr->right.sym->name))
 191                                 prop_warn(prop, "range is invalid");
 192                         break;
 193                 default:
 194                         ;
 195                 }
 196         }
 197 }
 198
 199 void menu_finalize(struct menu *parent)
 200 {
 201         struct menu *menu, *last_menu;
 202         struct symbol *sym;
 203         struct property *prop;
 204         struct expr *parentdep, *basedep, *dep, *dep2, **ep;
 205
 206         sym = parent->sym;
 207         if (parent->list) {
 208                 if (sym && sym_is_choice(sym)) {
 209                         /* find the first choice value and find out choice type */
 210                         for (menu = parent->list; menu; menu = menu->next) {
 211                                 if (menu->sym) {
 212                                         current_entry = parent;
 213                                         menu_set_type(menu->sym->type);
 214                                         current_entry = menu;
 215                                         menu_set_type(sym->type);
 216                                         break;
 217                                 }
 218                         }
 219                         parentdep = expr_alloc_symbol(sym);
 220                 } else if (parent->prompt)
 221                         parentdep = parent->prompt->visible.expr;
 222                 else
 223                         parentdep = parent->dep;
 224
 225                 for (menu = parent->list; menu; menu = menu->next) {
 226                         basedep = expr_transform(menu->dep);
 227                         basedep = expr_alloc_and(expr_copy(parentdep), basedep);
 228                         basedep = expr_eliminate_dups(basedep);
 229                         menu->dep = basedep;
 230                         if (menu->sym)
 231                                 prop = menu->sym->prop;
 232                         else
 233                                 prop = menu->prompt;
 234                         for (; prop; prop = prop->next) {
 235                                 if (prop->menu != menu)
 236                                         continue;
 237                                 dep = expr_transform(prop->visible.expr);
 238                                 dep = expr_alloc_and(expr_copy(basedep), dep);
 239                                 dep = expr_eliminate_dups(dep);
 240                                 if (menu->sym && menu->sym->type != S_TRISTATE)
 241                                         dep = expr_trans_bool(dep);
 242                                 prop->visible.expr = dep;
 243                                 if (prop->type == P_SELECT) {
 244                                         struct symbol *es = prop_get_symbol(prop);
 245                                         es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
 246                                                         expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
 247                                 }
 248                         }
 249                 }
 250                 for (menu = parent->list; menu; menu = menu->next)
 251                         menu_finalize(menu);
 252         } else if (sym) {
 253                 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
 254                 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
 255                 basedep = expr_eliminate_dups(expr_transform(basedep));
 256                 last_menu = NULL;
 257                 for (menu = parent->next; menu; menu = menu->next) {
 258                         dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
 259                         if (!expr_contains_symbol(dep, sym))
 260                                 break;
 261                         if (expr_depends_symbol(dep, sym))
 262                                 goto next;
 263                         dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
 264                         dep = expr_eliminate_dups(expr_transform(dep));
 265                         dep2 = expr_copy(basedep);
 266                         expr_eliminate_eq(&dep, &dep2);
 267                         expr_free(dep);
 268                         if (!expr_is_yes(dep2)) {
 269                                 expr_free(dep2);
 270                                 break;
 271                         }
 272                         expr_free(dep2);
 273                 next:
 274                         menu_finalize(menu);
 275                         menu->parent = parent;
 276                         last_menu = menu;
 277                 }
 278                 if (last_menu) {
 279                         parent->list = parent->next;
 280                         parent->next = last_menu->next;
 281                         last_menu->next = NULL;
 282                 }
 283         }
 284         for (menu = parent->list; menu; menu = menu->next) {
 285                 if (sym && sym_is_choice(sym) && menu->sym) {
 286                         menu->sym->flags |= SYMBOL_CHOICEVAL;
 287                         if (!menu->prompt)
 288                                 menu_warn(menu, "choice value must have a prompt");
 289                         for (prop = menu->sym->prop; prop; prop = prop->next) {
 290                                 if (prop->type == P_PROMPT && prop->menu != menu) {
 291                                         prop_warn(prop, "choice values "
 292                                             "currently only support a "
 293                                             "single prompt");
 294                                 }
 295                                 if (prop->type == P_DEFAULT)
 296                                         prop_warn(prop, "defaults for choice "
 297                                             "values not supported");
 298                         }
 299                         current_entry = menu;
 300                         menu_set_type(sym->type);
 301                         menu_add_symbol(P_CHOICE, sym, NULL);
 302                         prop = sym_get_choice_prop(sym);
 303                         for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
 304                                 ;
 305                         *ep = expr_alloc_one(E_CHOICE, NULL);
 306                         (*ep)->right.sym = menu->sym;
 307                 }
 308                 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
 309                         for (last_menu = menu->list; ; last_menu = last_menu->next) {
 310                                 last_menu->parent = parent;
 311                                 if (!last_menu->next)
 312                                         break;
 313                         }
 314                         last_menu->next = menu->next;
 315                         menu->next = menu->list;
 316                         menu->list = NULL;
 317                 }
 318         }
 319
 320         if (sym && !(sym->flags & SYMBOL_WARNED)) {
 321                 if (sym->type == S_UNKNOWN)
 322                         menu_warn(parent, "config symbol defined "
 323                             "without type\n");
 324
 325                 if (sym_is_choice(sym) && !parent->prompt)
 326                         menu_warn(parent, "choice must have a prompt\n");
 327
 328                 /* Check properties connected to this symbol */
 329                 sym_check_prop(sym);
 330                 sym->flags |= SYMBOL_WARNED;
 331         }
 332
 333         if (sym && !sym_is_optional(sym) && parent->prompt) {
 334                 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
 335                                 expr_alloc_and(parent->prompt->visible.expr,
 336                                         expr_alloc_symbol(&symbol_mod)));
 337         }
 338 }
 339
 340 bool menu_is_visible(struct menu *menu)
 341 {
 342         struct menu *child;
 343         struct symbol *sym;
 344         tristate visible;
 345
 346         if (!menu->prompt)
 347                 return false;
 348         sym = menu->sym;
 349         if (sym) {
 350                 sym_calc_value(sym);
 351                 visible = menu->prompt->visible.tri;
 352         } else
 353                 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
 354
 355         if (visible != no)
 356                 return true;
 357         if (!sym || sym_get_tristate_value(menu->sym) == no)
 358                 return false;
 359
 360         for (child = menu->list; child; child = child->next)
 361                 if (menu_is_visible(child))
 362                         return true;
 363         return false;
 364 }
 365
 366 const char *menu_get_prompt(struct menu *menu)
 367 {
 368         if (menu->prompt)
 369                 return menu->prompt->text;
 370         else if (menu->sym)
 371                 return menu->sym->name;
 372         return NULL;
 373 }
 374
 375 struct menu *menu_get_root_menu(struct menu *menu)
 376 {
 377         return &rootmenu;
 378 }
 379
 380 struct menu *menu_get_parent_menu(struct menu *menu)
 381 {
 382         enum prop_type type;
 383
 384         for (; menu != &rootmenu; menu = menu->parent) {
 385                 type = menu->prompt ? menu->prompt->type : 0;
 386                 if (type == P_MENU)
 387                         break;
 388         }
 389         return menu;
 390 }
 391
 392 struct file *file_lookup(const char *name)
 393 {
 394         struct file *file;
 395
 396         for (file = file_list; file; file = file->next) {
 397                 if (!strcmp(name, file->name))
 398                         return file;
 399         }
 400
 401         file = malloc(sizeof(*file));
 402         memset(file, 0, sizeof(*file));
 403         file->name = strdup(name);
 404         file->next = file_list;
 405         file_list = file;
 406         return file;
 407 }
 408
 409 int file_write_dep(const char *name)
 410 {
 411         struct file *file;
 412         FILE *out;
 413
 414         if (!name)
 415                 name = ".config.cmd";
 416         out = fopen(".config.tmp", "w");
 417         if (!out)
 418                 return 1;
 419         fprintf(out, "deps_config := \\\n");
 420         for (file = file_list; file; file = file->next) {
 421                 if (file->next)
 422                         fprintf(out, "\t%s \\\n", file->name);
 423                 else
 424                         fprintf(out, "\t%s\n", file->name);
 425         }
 426         fprintf(out, "\n.config include/config.h: $(deps_config)\n\n$(deps_config):\n");
 427         fclose(out);
 428         rename(".config.tmp", name);
 429         return 0;
 430 }
 431