release/src/router/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 void menu_init(void)
  20 {
  21         current_entry = current_menu = &rootmenu;
  22         last_entry_ptr = &rootmenu.list;
  23 }
  24
  25 void menu_add_entry(struct symbol *sym)
  26 {
  27         struct menu *menu;
  28
  29         menu = malloc(sizeof(*menu));
  30         memset(menu, 0, sizeof(*menu));
  31         menu->sym = sym;
  32         menu->parent = current_menu;
  33         menu->file = current_file;
  34         menu->lineno = zconf_lineno();
  35
  36         *last_entry_ptr = menu;
  37         last_entry_ptr = &menu->next;
  38         current_entry = menu;
  39 }
  40
  41 void menu_end_entry(void)
  42 {
  43 }
  44
  45 void menu_add_menu(void)
  46 {
  47         current_menu = current_entry;
  48         last_entry_ptr = &current_entry->list;
  49 }
  50
  51 void menu_end_menu(void)
  52 {
  53         last_entry_ptr = &current_menu->next;
  54         current_menu = current_menu->parent;
  55 }
  56
  57 void menu_add_dep(struct expr *dep)
  58 {
  59         current_entry->dep = expr_alloc_and(current_entry->dep, dep);
  60 }
  61
  62 void menu_set_type(int type)
  63 {
  64         struct symbol *sym = current_entry->sym;
  65
  66         if (sym->type == type)
  67                 return;
  68         if (sym->type == S_UNKNOWN) {
  69                 sym->type = type;
  70                 return;
  71         }
  72         fprintf(stderr, "%s:%d: type of '%s' redefined from '%s' to '%s'\n",
  73                 current_entry->file->name, current_entry->lineno,
  74                 sym->name ? sym->name : "<choice>", sym_type_name(sym->type), sym_type_name(type));
  75 }
  76
  77 struct property *create_prop(enum prop_type type)
  78 {
  79         struct property *prop;
  80
  81         prop = malloc(sizeof(*prop));
  82         memset(prop, 0, sizeof(*prop));
  83         prop->type = type;
  84         prop->file = current_file;
  85         prop->lineno = zconf_lineno();
  86
  87         return prop;
  88 }
  89
  90 struct property *menu_add_prop(int token, char *prompt, struct symbol *def, struct expr *dep)
  91 {
  92         struct property *prop = create_prop(token);
  93         struct property **propp;
  94
  95         prop->sym = current_entry->sym;
  96         prop->menu = current_entry;
  97         prop->text = prompt;
  98         prop->def = def;
  99         E_EXPR(prop->visible) = dep;
 100
 101         if (prompt)
 102                 current_entry->prompt = prop;
 103
 104         /* append property to the prop list of symbol */
 105         if (prop->sym) {
 106                 for (propp = &prop->sym->prop; *propp; propp = &(*propp)->next)
 107                         ;
 108                 *propp = prop;
 109         }
 110
 111         return prop;
 112 }
 113
 114 void menu_add_prompt(int token, char *prompt, struct expr *dep)
 115 {
 116         current_entry->prompt = menu_add_prop(token, prompt, NULL, dep);
 117 }
 118
 119 void menu_add_default(int token, struct symbol *def, struct expr *dep)
 120 {
 121         current_entry->prompt = menu_add_prop(token, NULL, def, dep);
 122 }
 123
 124 void menu_finalize(struct menu *parent)
 125 {
 126         struct menu *menu, *last_menu;
 127         struct symbol *sym;
 128         struct property *prop;
 129         struct expr *parentdep, *basedep, *dep, *dep2;
 130
 131         sym = parent->sym;
 132         if (parent->list) {
 133                 if (sym && sym_is_choice(sym)) {
 134                         /* find the first choice value and find out choice type */
 135                         for (menu = parent->list; menu; menu = menu->next) {
 136                                 if (menu->sym) {
 137                                         current_entry = parent;
 138                                         menu_set_type(menu->sym->type);
 139                                         current_entry = menu;
 140                                         menu_set_type(sym->type);
 141                                         break;
 142                                 }
 143                         }
 144                         parentdep = expr_alloc_symbol(sym);
 145                 } else if (parent->prompt)
 146                         parentdep = E_EXPR(parent->prompt->visible);
 147                 else
 148                         parentdep = parent->dep;
 149
 150                 for (menu = parent->list; menu; menu = menu->next) {
 151                         basedep = expr_transform(menu->dep);
 152                         basedep = expr_alloc_and(expr_copy(parentdep), basedep);
 153                         basedep = expr_eliminate_dups(basedep);
 154                         menu->dep = basedep;
 155                         if (menu->sym)
 156                                 prop = menu->sym->prop;
 157                         else
 158                                 prop = menu->prompt;
 159                         for (; prop; prop = prop->next) {
 160                                 if (prop->menu != menu)
 161                                         continue;
 162                                 dep = expr_transform(E_EXPR(prop->visible));
 163                                 dep = expr_alloc_and(expr_copy(basedep), dep);
 164                                 dep = expr_eliminate_dups(dep);
 165                                 if (menu->sym && menu->sym->type != S_TRISTATE)
 166                                         dep = expr_trans_bool(dep);
 167                                 E_EXPR(prop->visible) = dep;
 168                         }
 169                 }
 170                 for (menu = parent->list; menu; menu = menu->next)
 171                         menu_finalize(menu);
 172         } else if (sym && parent->prompt) {
 173                 basedep = E_EXPR(parent->prompt->visible);
 174                 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
 175                 basedep = expr_eliminate_dups(expr_transform(basedep));
 176                 last_menu = NULL;
 177                 for (menu = parent->next; menu; menu = menu->next) {
 178                         dep = menu->prompt ? E_EXPR(menu->prompt->visible) : menu->dep;
 179                         if (!expr_contains_symbol(dep, sym))
 180                                 break;
 181                         if (expr_depends_symbol(dep, sym))
 182                                 goto next;
 183                         dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
 184                         dep = expr_eliminate_dups(expr_transform(dep));
 185                         dep2 = expr_copy(basedep);
 186                         expr_eliminate_eq(&dep, &dep2);
 187                         expr_free(dep);
 188                         if (!expr_is_yes(dep2)) {
 189                                 expr_free(dep2);
 190                                 break;
 191                         }
 192                         expr_free(dep2);
 193                 next:
 194                         menu_finalize(menu);
 195                         menu->parent = parent;
 196                         last_menu = menu;
 197                 }
 198                 if (last_menu) {
 199                         parent->list = parent->next;
 200                         parent->next = last_menu->next;
 201                         last_menu->next = NULL;
 202                 }
 203         }
 204         for (menu = parent->list; menu; menu = menu->next) {
 205                 if (sym && sym_is_choice(sym) && menu->sym) {
 206                         menu->sym->flags |= SYMBOL_CHOICEVAL;
 207                         current_entry = menu;
 208                         menu_set_type(sym->type);
 209                         menu_add_prop(P_CHOICE, NULL, parent->sym, NULL);
 210                         prop = sym_get_choice_prop(parent->sym);
 211                         //dep = expr_alloc_one(E_CHOICE, dep);
 212                         //dep->right.sym = menu->sym;
 213                         prop->dep = expr_alloc_one(E_CHOICE, prop->dep);
 214                         prop->dep->right.sym = menu->sym;
 215                 }
 216                 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
 217                         for (last_menu = menu->list; ; last_menu = last_menu->next) {
 218                                 last_menu->parent = parent;
 219                                 if (!last_menu->next)
 220                                         break;
 221                         }
 222                         last_menu->next = menu->next;
 223                         menu->next = menu->list;
 224                         menu->list = NULL;
 225                 }
 226         }
 227 }
 228
 229 bool menu_is_visible(struct menu *menu)
 230 {
 231         tristate visible;
 232
 233         if (!menu->prompt)
 234                 return false;
 235         if (menu->sym) {
 236                 sym_calc_value(menu->sym);
 237                 visible = E_TRI(menu->prompt->visible);
 238         } else
 239                 visible = E_CALC(menu->prompt->visible);
 240         return visible != no;
 241 }
 242
 243 const char *menu_get_prompt(struct menu *menu)
 244 {
 245         if (menu->prompt)
 246                 return menu->prompt->text;
 247         else if (menu->sym)
 248                 return menu->sym->name;
 249         return NULL;
 250 }
 251
 252 struct menu *menu_get_root_menu(struct menu *menu)
 253 {
 254         return &rootmenu;
 255 }
 256
 257 struct menu *menu_get_parent_menu(struct menu *menu)
 258 {
 259         enum prop_type type;
 260
 261         while (menu != &rootmenu) {
 262                 menu = menu->parent;
 263                 type = menu->prompt ? menu->prompt->type : 0;
 264                 if (type == P_MENU || type == P_ROOTMENU)
 265                         break;
 266         }
 267         return menu;
 268 }
 269
 270 struct file *file_lookup(const char *name)
 271 {
 272         struct file *file;
 273
 274         for (file = file_list; file; file = file->next) {
 275                 if (!strcmp(name, file->name))
 276                         return file;
 277         }
 278
 279         file = malloc(sizeof(*file));
 280         memset(file, 0, sizeof(*file));
 281         file->name = strdup(name);
 282         file->next = file_list;
 283         file_list = file;
 284         return file;
 285 }
 286
 287 int file_write_dep(const char *name)
 288 {
 289         struct file *file;
 290         FILE *out;
 291
 292         if (!name)
 293                 name = ".config.cmd";
 294         out = fopen(".config.tmp", "w");
 295         if (!out)
 296                 return 1;
 297         fprintf(out, "deps_config := \\\n");
 298         for (file = file_list; file; file = file->next) {
 299                 if (file->next)
 300                         fprintf(out, "\t%s \\\n", file->name);
 301                 else
 302                         fprintf(out, "\t%s\n", file->name);
 303         }
 304         fclose(out);
 305         rename(".config.tmp", name);
 306         return 0;
 307 }
 308