package/config/mconf.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  * Introduced single menu mode (show all sub-menus in one large tree).
   6  * 2002-11-06 Petr Baudis <pasky@ucw.cz>
   7  *
   8  * i18n, 2005, Arnaldo Carvalho de Melo <acme@conectiva.com.br>
   9  */
  10
  11 #include <sys/ioctl.h>
  12 #include <sys/wait.h>
  13 #include <ctype.h>
  14 #include <errno.h>
  15 #include <fcntl.h>
  16 #include <limits.h>
  17 #include <signal.h>
  18 #include <stdarg.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <termios.h>
  22 #include <unistd.h>
  23 #include <locale.h>
  24
  25 #define LKC_DIRECT_LINK
  26 #include "lkc.h"
  27 #include "lxdialog/dialog.h"
  28
  29 static const char mconf_readme[] = N_(
  30 "Overview\n"
  31 "--------\n"
  32 "Some features may be built directly into Buildroot. Some features\n"
  33 "may be completely removed altogether.  There are also certain\n"
  34 "parameters which are not really features, but must be\n"
  35 "entered in as decimal or hexadecimal numbers or possibly text.\n"
  36 "\n"
  37 "Menu items beginning with following braces represent features that\n"
  38 "  [ ] can be built in or removed\n"
  39 "  < > can be built in, modularized or removed\n"
  40 "  { } can be built in or modularized (selected by other feature)\n"
  41 "  - - are selected by other feature,\n"
  42 "while *, M or whitespace inside braces means to build in, build as\n"
  43 "a module or to exclude the feature respectively.\n"
  44 "\n"
  45 "To change any of these features, highlight it with the cursor\n"
  46 "keys and press <Y> to build it in, <M> to make it a module or\n"
  47 "<N> to removed it.  You may also press the <Space Bar> to cycle\n"
  48 "through the available options (ie. Y->N->M->Y).\n"
  49 "\n"
  50 "Some additional keyboard hints:\n"
  51 "\n"
  52 "Menus\n"
  53 "----------\n"
  54 "o  Use the Up/Down arrow keys (cursor keys) to highlight the item\n"
  55 "   you wish to change or submenu wish to select and press <Enter>.\n"
  56 "   Submenus are designated by \"--->\".\n"
  57 "\n"
  58 "   Shortcut: Press the option's highlighted letter (hotkey).\n"
  59 "             Pressing a hotkey more than once will sequence\n"
  60 "             through all visible items which use that hotkey.\n"
  61 "\n"
  62 "   You may also use the <PAGE UP> and <PAGE DOWN> keys to scroll\n"
  63 "   unseen options into view.\n"
  64 "\n"
  65 "o  To exit a menu use the cursor keys to highlight the <Exit> button\n"
  66 "   and press <ENTER>.\n"
  67 "\n"
  68 "   Shortcut: Press <ESC><ESC> or <E> or <X> if there is no hotkey\n"
  69 "             using those letters.  You may press a single <ESC>, but\n"
  70 "             there is a delayed response which you may find annoying.\n"
  71 "\n"
  72 "   Also, the <TAB> and cursor keys will cycle between <Select>,\n"
  73 "   <Exit> and <Help>\n"
  74 "\n"
  75 "o  To get help with an item, use the cursor keys to highlight <Help>\n"
  76 "   and Press <ENTER>.\n"
  77 "\n"
  78 "   Shortcut: Press <H> or <?>.\n"
  79 "\n"
  80 "\n"
  81 "Radiolists  (Choice lists)\n"
  82 "-----------\n"
  83 "o  Use the cursor keys to select the option you wish to set and press\n"
  84 "   <S> or the <SPACE BAR>.\n"
  85 "\n"
  86 "   Shortcut: Press the first letter of the option you wish to set then\n"
  87 "             press <S> or <SPACE BAR>.\n"
  88 "\n"
  89 "o  To see available help for the item, use the cursor keys to highlight\n"
  90 "   <Help> and Press <ENTER>.\n"
  91 "\n"
  92 "   Shortcut: Press <H> or <?>.\n"
  93 "\n"
  94 "   Also, the <TAB> and cursor keys will cycle between <Select> and\n"
  95 "   <Help>\n"
  96 "\n"
  97 "\n"
  98 "Data Entry\n"
  99 "-----------\n"
 100 "o  Enter the requested information and press <ENTER>\n"
 101 "   If you are entering hexadecimal values, it is not necessary to\n"
 102 "   add the '0x' prefix to the entry.\n"
 103 "\n"
 104 "o  For help, use the <TAB> or cursor keys to highlight the help option\n"
 105 "   and press <ENTER>.  You can try <TAB><H> as well.\n"
 106 "\n"
 107 "\n"
 108 "Text Box    (Help Window)\n"
 109 "--------\n"
 110 "o  Use the cursor keys to scroll up/down/left/right.  The VI editor\n"
 111 "   keys h,j,k,l function here as do <SPACE BAR> and <B> for those\n"
 112 "   who are familiar with less and lynx.\n"
 113 "\n"
 114 "o  Press <E>, <X>, <Enter> or <Esc><Esc> to exit.\n"
 115 "\n"
 116 "\n"
 117 "Alternate Configuration Files\n"
 118 "-----------------------------\n"
 119 "Menuconfig supports the use of alternate configuration files for\n"
 120 "those who, for various reasons, find it necessary to switch\n"
 121 "between different configurations.\n"
 122 "\n"
 123 "At the end of the main menu you will find two options.  One is\n"
 124 "for saving the current configuration to a file of your choosing.\n"
 125 "The other option is for loading a previously saved alternate\n"
 126 "configuration.\n"
 127 "\n"
 128 "Even if you don't use alternate configuration files, but you\n"
 129 "find during a Menuconfig session that you have completely messed\n"
 130 "up your settings, you may use the \"Load Alternate...\" option to\n"
 131 "restore your previously saved settings from \".config\" without\n"
 132 "restarting Menuconfig.\n"
 133 "\n"
 134 "Other information\n"
 135 "-----------------\n"
 136 "If you use Menuconfig in an XTERM window make sure you have your\n"
 137 "$TERM variable set to point to a xterm definition which supports color.\n"
 138 "Otherwise, Menuconfig will look rather bad.  Menuconfig will not\n"
 139 "display correctly in a RXVT window because rxvt displays only one\n"
 140 "intensity of color, bright.\n"
 141 "\n"
 142 "Menuconfig will display larger menus on screens or xterms which are\n"
 143 "set to display more than the standard 25 row by 80 column geometry.\n"
 144 "In order for this to work, the \"stty size\" command must be able to\n"
 145 "display the screen's current row and column geometry.  I STRONGLY\n"
 146 "RECOMMEND that you make sure you do NOT have the shell variables\n"
 147 "LINES and COLUMNS exported into your environment.  Some distributions\n"
 148 "export those variables via /etc/profile.  Some ncurses programs can\n"
 149 "become confused when those variables (LINES & COLUMNS) don't reflect\n"
 150 "the true screen size.\n"
 151 "\n"
 152 "Optional personality available\n"
 153 "------------------------------\n"
 154 "If you prefer to have all of the options listed in a single\n"
 155 "menu, rather than the default multimenu hierarchy, run the menuconfig\n"
 156 "with MENUCONFIG_MODE environment variable set to single_menu. Example:\n"
 157 "\n"
 158 "make MENUCONFIG_MODE=single_menu menuconfig\n"
 159 "\n"
 160 "<Enter> will then unroll the appropriate category, or enfold it if it\n"
 161 "is already unrolled.\n"
 162 "\n"
 163 "Note that this mode can eventually be a little more CPU expensive\n"
 164 "(especially with a larger number of unrolled categories) than the\n"
 165 "default mode.\n"
 166 "\n"
 167 "Different color themes available\n"
 168 "--------------------------------\n"
 169 "It is possible to select different color themes using the variable\n"
 170 "MENUCONFIG_COLOR. To select a theme use:\n"
 171 "\n"
 172 "make MENUCONFIG_COLOR=<theme> menuconfig\n"
 173 "\n"
 174 "Available themes are\n"
 175 " mono       => selects colors suitable for monochrome displays\n"
 176 " blackbg    => selects a color scheme with black background\n"
 177 " classic    => theme with blue background. The classic look\n"
 178 " bluetitle  => a LCD friendly version of classic. (default)\n"
 179 "\n"),
 180 menu_instructions[] = N_(
 181         "Arrow keys navigate the menu.  "
 182         "<Enter> selects submenus --->.  "
 183         "Highlighted letters are hotkeys.  "
 184         "Pressing <Y> selectes a feature, while <N> will exclude a feature.  "
 185         "Press <Esc><Esc> to exit, <?> for Help, </> for Search.  "
 186         "Legend: [*] feature is selected  [ ] feature is excluded"),
 187 radiolist_instructions[] = N_(
 188         "Use the arrow keys to navigate this window or "
 189         "press the hotkey of the item you wish to select "
 190         "followed by the <SPACE BAR>. "
 191         "Press <?> for additional information about this option."),
 192 inputbox_instructions_int[] = N_(
 193         "Please enter a decimal value. "
 194         "Fractions will not be accepted.  "
 195         "Use the <TAB> key to move from the input field to the buttons below it."),
 196 inputbox_instructions_hex[] = N_(
 197         "Please enter a hexadecimal value. "
 198         "Use the <TAB> key to move from the input field to the buttons below it."),
 199 inputbox_instructions_string[] = N_(
 200         "Please enter a string value. "
 201         "Use the <TAB> key to move from the input field to the buttons below it."),
 202 setmod_text[] = N_(
 203         "This feature depends on another which has been configured as a module.\n"
 204         "As a result, this feature will be built as a module."),
 205 nohelp_text[] = N_(
 206         "There is no help available for this option.\n"),
 207 load_config_text[] = N_(
 208         "Enter the name of the configuration file you wish to load.  "
 209         "Accept the name shown to restore the configuration you "
 210         "last retrieved.  Leave blank to abort."),
 211 load_config_help[] = N_(
 212         "\n"
 213         "For various reasons, one may wish to keep several different Buildroot\n"
 214         "configurations available on a single machine.\n"
 215         "\n"
 216         "If you have saved a previous configuration in a file other than the\n"
 217         "Buildroot's default, entering the name of the file here will allow you\n"
 218         "to modify that configuration.\n"
 219         "\n"
 220         "If you are uncertain, then you have probably never used alternate\n"
 221         "configuration files.  You should therefor leave this blank to abort.\n"),
 222 save_config_text[] = N_(
 223         "Enter a filename to which this configuration should be saved "
 224         "as an alternate.  Leave blank to abort."),
 225 save_config_help[] = N_(
 226         "\n"
 227         "For various reasons, one may wish to keep different Buildroot\n"
 228         "configurations available on a single machine.\n"
 229         "\n"
 230         "Entering a file name here will allow you to later retrieve, modify\n"
 231         "and use the current configuration as an alternate to whatever\n"
 232         "configuration options you have selected at that time.\n"
 233         "\n"
 234         "If you are uncertain what all this means then you should probably\n"
 235         "leave this blank.\n"),
 236 search_help[] = N_(
 237         "\n"
 238         "Search for CONFIG_ symbols and display their relations.\n"
 239         "Regular expressions are allowed.\n"
 240         "Example: search for \"^FOO\"\n"
 241         "Result:\n"
 242         "-----------------------------------------------------------------\n"
 243         "Symbol: FOO [=m]\n"
 244         "Prompt: Foo bus is used to drive the bar HW\n"
 245         "Defined at drivers/pci/Kconfig:47\n"
 246         "Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
 247         "Location:\n"
 248         "  -> Bus options (PCI, PCMCIA, EISA, MCA, ISA)\n"
 249         "    -> PCI support (PCI [=y])\n"
 250         "      -> PCI access mode (<choice> [=y])\n"
 251         "Selects: LIBCRC32\n"
 252         "Selected by: BAR\n"
 253         "-----------------------------------------------------------------\n"
 254         "o The line 'Prompt:' shows the text used in the menu structure for\n"
 255         "  this CONFIG_ symbol\n"
 256         "o The 'Defined at' line tell at what file / line number the symbol\n"
 257         "  is defined\n"
 258         "o The 'Depends on:' line tell what symbols needs to be defined for\n"
 259         "  this symbol to be visible in the menu (selectable)\n"
 260         "o The 'Location:' lines tell where in the menu structure this symbol\n"
 261         "  is located\n"
 262         "    A location followed by a [=y] indicate that this is a selectable\n"
 263         "    menu item - and current value is displayed inside brackets.\n"
 264         "o The 'Selects:' line tell what symbol will be automatically\n"
 265         "  selected if this symbol is selected (y or m)\n"
 266         "o The 'Selected by' line tell what symbol has selected this symbol\n"
 267         "\n"
 268         "Only relevant lines are shown.\n"
 269         "\n\n"
 270         "Search examples:\n"
 271         "Examples: USB  => find all CONFIG_ symbols containing USB\n"
 272         "          ^USB => find all CONFIG_ symbols starting with USB\n"
 273         "          USB$ => find all CONFIG_ symbols ending with USB\n"
 274         "\n");
 275
 276 static int indent;
 277 static struct termios ios_org;
 278 static int rows = 0, cols = 0;
 279 static struct menu *current_menu;
 280 static int child_count;
 281 static int single_menu_mode;
 282
 283 static void conf(struct menu *menu);
 284 static void conf_choice(struct menu *menu);
 285 static void conf_string(struct menu *menu);
 286 static void conf_load(void);
 287 static void conf_save(void);
 288 static void show_textbox(const char *title, const char *text, int r, int c);
 289 static void show_helptext(const char *title, const char *text);
 290 static void show_help(struct menu *menu);
 291
 292 static void init_wsize(void)
 293 {
 294         struct winsize ws;
 295         char *env;
 296
 297         if (!ioctl(STDIN_FILENO, TIOCGWINSZ, &ws)) {
 298                 rows = ws.ws_row;
 299                 cols = ws.ws_col;
 300         }
 301
 302         if (!rows) {
 303                 env = getenv("LINES");
 304                 if (env)
 305                         rows = atoi(env);
 306                 if (!rows)
 307                         rows = 24;
 308         }
 309         if (!cols) {
 310                 env = getenv("COLUMNS");
 311                 if (env)
 312                         cols = atoi(env);
 313                 if (!cols)
 314                         cols = 80;
 315         }
 316
 317         if (rows < 19 || cols < 80) {
 318                 fprintf(stderr, N_("Your display is too small to run Menuconfig!\n"));
 319                 fprintf(stderr, N_("It must be at least 19 lines by 80 columns.\n"));
 320                 exit(1);
 321         }
 322
 323         rows -= 4;
 324         cols -= 5;
 325 }
 326
 327 static void get_prompt_str(struct gstr *r, struct property *prop)
 328 {
 329         int i, j;
 330         struct menu *submenu[8], *menu;
 331
 332         str_printf(r, "Prompt: %s\n", prop->text);
 333         str_printf(r, "  Defined at %s:%d\n", prop->menu->file->name,
 334                 prop->menu->lineno);
 335         if (!expr_is_yes(prop->visible.expr)) {
 336                 str_append(r, "  Depends on: ");
 337                 expr_gstr_print(prop->visible.expr, r);
 338                 str_append(r, "\n");
 339         }
 340         menu = prop->menu->parent;
 341         for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent)
 342                 submenu[i++] = menu;
 343         if (i > 0) {
 344                 str_printf(r, "  Location:\n");
 345                 for (j = 4; --i >= 0; j += 2) {
 346                         menu = submenu[i];
 347                         str_printf(r, "%*c-> %s", j, ' ', menu_get_prompt(menu));
 348                         if (menu->sym) {
 349                                 str_printf(r, " (%s [=%s])", menu->sym->name ?
 350                                         menu->sym->name : "<choice>",
 351                                         sym_get_string_value(menu->sym));
 352                         }
 353                         str_append(r, "\n");
 354                 }
 355         }
 356 }
 357
 358 static void get_symbol_str(struct gstr *r, struct symbol *sym)
 359 {
 360         bool hit;
 361         struct property *prop;
 362
 363         if (sym && sym->name)
 364                 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
 365                                                     sym_get_string_value(sym));
 366         for_all_prompts(sym, prop)
 367                 get_prompt_str(r, prop);
 368         hit = false;
 369         for_all_properties(sym, prop, P_SELECT) {
 370                 if (!hit) {
 371                         str_append(r, "  Selects: ");
 372                         hit = true;
 373                 } else
 374                         str_printf(r, " && ");
 375                 expr_gstr_print(prop->expr, r);
 376         }
 377         if (hit)
 378                 str_append(r, "\n");
 379         if (sym->rev_dep.expr) {
 380                 str_append(r, "  Selected by: ");
 381                 expr_gstr_print(sym->rev_dep.expr, r);
 382                 str_append(r, "\n");
 383         }
 384         str_append(r, "\n\n");
 385 }
 386
 387 static struct gstr get_relations_str(struct symbol **sym_arr)
 388 {
 389         struct symbol *sym;
 390         struct gstr res = str_new();
 391         int i;
 392
 393         for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
 394                 get_symbol_str(&res, sym);
 395         if (!i)
 396                 str_append(&res, "No matches found.\n");
 397         return res;
 398 }
 399
 400 static char filename[PATH_MAX+1];
 401 static void set_config_filename(const char *config_filename)
 402 {
 403         static char menu_backtitle[PATH_MAX+128];
 404         int size;
 405         struct symbol *sym;
 406
 407         sym = sym_lookup("BR2_VERSION", 0);
 408         sym_calc_value(sym);
 409         size = snprintf(menu_backtitle, sizeof(menu_backtitle),
 410                         _("%s - buildroot v%s Configuration"),
 411                         config_filename, sym_get_string_value(sym));
 412         if (size >= sizeof(menu_backtitle))
 413                 menu_backtitle[sizeof(menu_backtitle)-1] = '\0';
 414         set_dialog_backtitle(menu_backtitle);
 415
 416         size = snprintf(filename, sizeof(filename), "%s", config_filename);
 417         if (size >= sizeof(filename))
 418                 filename[sizeof(filename)-1] = '\0';
 419 }
 420
 421
 422 static void search_conf(void)
 423 {
 424         struct symbol **sym_arr;
 425         struct gstr res;
 426         char *dialog_input;
 427         int dres;
 428 again:
 429         dialog_clear();
 430         dres = dialog_inputbox(_("Search Configuration Parameter"),
 431                               _("Enter CONFIG_ (sub)string to search for "
 432                                 "(with or without \"CONFIG\")"),
 433                               10, 75, "");
 434         switch (dres) {
 435         case 0:
 436                 break;
 437         case 1:
 438                 show_helptext(_("Search Configuration"), search_help);
 439                 goto again;
 440         default:
 441                 return;
 442         }
 443
 444         /* strip CONFIG_ if necessary */
 445         dialog_input = dialog_input_result;
 446         if (strncasecmp(dialog_input_result, "CONFIG_", 7) == 0)
 447                 dialog_input += 7;
 448
 449         sym_arr = sym_re_search(dialog_input);
 450         res = get_relations_str(sym_arr);
 451         free(sym_arr);
 452         show_textbox(_("Search Results"), str_get(&res), 0, 0);
 453         str_free(&res);
 454 }
 455
 456 static void build_conf(struct menu *menu)
 457 {
 458         struct symbol *sym;
 459         struct property *prop;
 460         struct menu *child;
 461         int type, tmp, doint = 2;
 462         tristate val;
 463         char ch;
 464
 465         if (!menu_is_visible(menu))
 466                 return;
 467
 468         sym = menu->sym;
 469         prop = menu->prompt;
 470         if (!sym) {
 471                 if (prop && menu != current_menu) {
 472                         const char *prompt = menu_get_prompt(menu);
 473                         switch (prop->type) {
 474                         case P_MENU:
 475                                 child_count++;
 476                                 if (single_menu_mode) {
 477                                         item_make("%s%*c%s",
 478                                                   menu->data ? "-->" : "++>",
 479                                                   indent + 1, ' ', prompt);
 480                                 } else
 481                                         item_make("   %*c%s  --->", indent + 1, ' ', prompt);
 482
 483                                 item_set_tag('m');
 484                                 item_set_data(menu);
 485                                 if (single_menu_mode && menu->data)
 486                                         goto conf_childs;
 487                                 return;
 488                         case P_COMMENT:
 489                                 if (prompt) {
 490                                         child_count++;
 491                                         item_make("   %*c*** %s ***", indent + 1, ' ', prompt);
 492                                         item_set_tag(':');
 493                                         item_set_data(menu);
 494                                 }
 495                                 break;
 496                         default:
 497                                 if (prompt) {
 498                                         child_count++;
 499                                         item_make("---%*c%s", indent + 1, ' ', prompt);
 500                                         item_set_tag(':');
 501                                         item_set_data(menu);
 502                                 }
 503                         }
 504                 } else
 505                         doint = 0;
 506                 goto conf_childs;
 507         }
 508
 509         type = sym_get_type(sym);
 510         if (sym_is_choice(sym)) {
 511                 struct symbol *def_sym = sym_get_choice_value(sym);
 512                 struct menu *def_menu = NULL;
 513
 514                 child_count++;
 515                 for (child = menu->list; child; child = child->next) {
 516                         if (menu_is_visible(child) && child->sym == def_sym)
 517                                 def_menu = child;
 518                 }
 519
 520                 val = sym_get_tristate_value(sym);
 521                 if (sym_is_changable(sym)) {
 522                         switch (type) {
 523                         case S_BOOLEAN:
 524                                 item_make("[%c]", val == no ? ' ' : '*');
 525                                 break;
 526                         case S_TRISTATE:
 527                                 switch (val) {
 528                                 case yes: ch = '*'; break;
 529                                 case mod: ch = 'M'; break;
 530                                 default:  ch = ' '; break;
 531                                 }
 532                                 item_make("<%c>", ch);
 533                                 break;
 534                         }
 535                         item_set_tag('t');
 536                         item_set_data(menu);
 537                 } else {
 538                         item_make("   ");
 539                         item_set_tag(def_menu ? 't' : ':');
 540                         item_set_data(menu);
 541                 }
 542
 543                 item_add_str("%*c%s", indent + 1, ' ', menu_get_prompt(menu));
 544                 if (val == yes) {
 545                         if (def_menu) {
 546                                 item_add_str(" (%s)", menu_get_prompt(def_menu));
 547                                 item_add_str("  --->");
 548                                 if (def_menu->list) {
 549                                         indent += 2;
 550                                         build_conf(def_menu);
 551                                         indent -= 2;
 552                                 }
 553                         }
 554                         return;
 555                 }
 556         } else {
 557                 if (menu == current_menu) {
 558                         item_make("---%*c%s", indent + 1, ' ', menu_get_prompt(menu));
 559                         item_set_tag(':');
 560                         item_set_data(menu);
 561                         goto conf_childs;
 562                 }
 563                 child_count++;
 564                 val = sym_get_tristate_value(sym);
 565                 if (sym_is_choice_value(sym) && val == yes) {
 566                         item_make("   ");
 567                         item_set_tag(':');
 568                         item_set_data(menu);
 569                 } else {
 570                         switch (type) {
 571                         case S_BOOLEAN:
 572                                 if (sym_is_changable(sym))
 573                                         item_make("[%c]", val == no ? ' ' : '*');
 574                                 else
 575                                         item_make("-%c-", val == no ? ' ' : '*');
 576                                 item_set_tag('t');
 577                                 item_set_data(menu);
 578                                 break;
 579                         case S_TRISTATE:
 580                                 switch (val) {
 581                                 case yes: ch = '*'; break;
 582                                 case mod: ch = 'M'; break;
 583                                 default:  ch = ' '; break;
 584                                 }
 585                                 if (sym_is_changable(sym)) {
 586                                         if (sym->rev_dep.tri == mod)
 587                                                 item_make("{%c}", ch);
 588                                         else
 589                                                 item_make("<%c>", ch);
 590                                 } else
 591                                         item_make("-%c-", ch);
 592                                 item_set_tag('t');
 593                                 item_set_data(menu);
 594                                 break;
 595                         default:
 596                                 tmp = 2 + strlen(sym_get_string_value(sym)); /* () = 2 */
 597                                 item_make("(%s)", sym_get_string_value(sym));
 598                                 tmp = indent - tmp + 4;
 599                                 if (tmp < 0)
 600                                         tmp = 0;
 601                                 item_add_str("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
 602                                              (sym_has_value(sym) || !sym_is_changable(sym)) ?
 603                                              "" : " (NEW)");
 604                                 item_set_tag('s');
 605                                 item_set_data(menu);
 606                                 goto conf_childs;
 607                         }
 608                 }
 609                 item_add_str("%*c%s%s", indent + 1, ' ', menu_get_prompt(menu),
 610                           (sym_has_value(sym) || !sym_is_changable(sym)) ?
 611                           "" : " (NEW)");
 612                 if (menu->prompt->type == P_MENU) {
 613                         item_add_str("  --->");
 614                         return;
 615                 }
 616         }
 617
 618 conf_childs:
 619         indent += doint;
 620         for (child = menu->list; child; child = child->next)
 621                 build_conf(child);
 622         indent -= doint;
 623 }
 624
 625 static void conf(struct menu *menu)
 626 {
 627         struct menu *submenu;
 628         const char *prompt = menu_get_prompt(menu);
 629         struct symbol *sym;
 630         struct menu *active_menu = NULL;
 631         int res;
 632         int s_scroll = 0;
 633
 634         while (1) {
 635                 item_reset();
 636                 current_menu = menu;
 637                 build_conf(menu);
 638                 if (!child_count)
 639                         break;
 640                 if (menu == &rootmenu) {
 641                         item_make("--- ");
 642                         item_set_tag(':');
 643                         item_make(_("    Load an Alternate Configuration File"));
 644                         item_set_tag('L');
 645                         item_make(_("    Save an Alternate Configuration File"));
 646                         item_set_tag('S');
 647                 }
 648                 dialog_clear();
 649                 res = dialog_menu(prompt ? prompt : _("Main Menu"),
 650                                   _(menu_instructions),
 651                                   active_menu, &s_scroll);
 652                 if (res == 1 || res == KEY_ESC || res == -ERRDISPLAYTOOSMALL)
 653                         break;
 654                 if (!item_activate_selected())
 655                         continue;
 656                 if (!item_tag())
 657                         continue;
 658
 659                 submenu = item_data();
 660                 active_menu = item_data();
 661                 if (submenu)
 662                         sym = submenu->sym;
 663                 else
 664                         sym = NULL;
 665
 666                 switch (res) {
 667                 case 0:
 668                         switch (item_tag()) {
 669                         case 'm':
 670                                 if (single_menu_mode)
 671                                         submenu->data = (void *) (long) !submenu->data;
 672                                 else
 673                                         conf(submenu);
 674                                 break;
 675                         case 't':
 676                                 if (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)
 677                                         conf_choice(submenu);
 678                                 else if (submenu->prompt->type == P_MENU)
 679                                         conf(submenu);
 680                                 break;
 681                         case 's':
 682                                 conf_string(submenu);
 683                                 break;
 684                         case 'L':
 685                                 conf_load();
 686                                 break;
 687                         case 'S':
 688                                 conf_save();
 689                                 break;
 690                         }
 691                         break;
 692                 case 2:
 693                         if (sym)
 694                                 show_help(submenu);
 695                         else
 696                                 show_helptext("README", _(mconf_readme));
 697                         break;
 698                 case 3:
 699                         if (item_is_tag('t')) {
 700                                 if (sym_set_tristate_value(sym, yes))
 701                                         break;
 702                                 if (sym_set_tristate_value(sym, mod))
 703                                         show_textbox(NULL, setmod_text, 6, 74);
 704                         }
 705                         break;
 706                 case 4:
 707                         if (item_is_tag('t'))
 708                                 sym_set_tristate_value(sym, no);
 709                         break;
 710                 case 5:
 711                         if (item_is_tag('t'))
 712                                 sym_set_tristate_value(sym, mod);
 713                         break;
 714                 case 6:
 715                         if (item_is_tag('t'))
 716                                 sym_toggle_tristate_value(sym);
 717                         else if (item_is_tag('m'))
 718                                 conf(submenu);
 719                         break;
 720                 case 7:
 721                         search_conf();
 722                         break;
 723                 }
 724         }
 725 }
 726
 727 static void show_textbox(const char *title, const char *text, int r, int c)
 728 {
 729         dialog_clear();
 730         dialog_textbox(title, text, r, c);
 731 }
 732
 733 static void show_helptext(const char *title, const char *text)
 734 {
 735         show_textbox(title, text, 0, 0);
 736 }
 737
 738 static void show_help(struct menu *menu)
 739 {
 740         struct gstr help = str_new();
 741         struct symbol *sym = menu->sym;
 742
 743         if (menu_has_help(menu))
 744         {
 745                 if (sym->name) {
 746                         str_printf(&help, "%s:\n\n", sym->name);
 747                         str_append(&help, _(menu_get_help(menu)));
 748                         str_append(&help, "\n");
 749                 }
 750         } else {
 751                 str_append(&help, nohelp_text);
 752         }
 753         get_symbol_str(&help, sym);
 754         show_helptext(menu_get_prompt(menu), str_get(&help));
 755         str_free(&help);
 756 }
 757
 758 static void conf_choice(struct menu *menu)
 759 {
 760         const char *prompt = menu_get_prompt(menu);
 761         struct menu *child;
 762         struct symbol *active;
 763
 764         active = sym_get_choice_value(menu->sym);
 765         while (1) {
 766                 int res;
 767                 int selected;
 768                 item_reset();
 769
 770                 current_menu = menu;
 771                 for (child = menu->list; child; child = child->next) {
 772                         if (!menu_is_visible(child))
 773                                 continue;
 774                         item_make("%s", menu_get_prompt(child));
 775                         item_set_data(child);
 776                         if (child->sym == active)
 777                                 item_set_selected(1);
 778                         if (child->sym == sym_get_choice_value(menu->sym))
 779                                 item_set_tag('X');
 780                 }
 781                 dialog_clear();
 782                 res = dialog_checklist(prompt ? prompt : _("Main Menu"),
 783                                         _(radiolist_instructions),
 784                                          15, 70, 6);
 785                 selected = item_activate_selected();
 786                 switch (res) {
 787                 case 0:
 788                         if (selected) {
 789                                 child = item_data();
 790                                 sym_set_tristate_value(child->sym, yes);
 791                         }
 792                         return;
 793                 case 1:
 794                         if (selected) {
 795                                 child = item_data();
 796                                 show_help(child);
 797                                 active = child->sym;
 798                         } else
 799                                 show_help(menu);
 800                         break;
 801                 case KEY_ESC:
 802                         return;
 803                 case -ERRDISPLAYTOOSMALL:
 804                         return;
 805                 }
 806         }
 807 }
 808
 809 static void conf_string(struct menu *menu)
 810 {
 811         const char *prompt = menu_get_prompt(menu);
 812
 813         while (1) {
 814                 int res;
 815                 char *heading;
 816
 817                 switch (sym_get_type(menu->sym)) {
 818                 case S_INT:
 819                         heading = _(inputbox_instructions_int);
 820                         break;
 821                 case S_HEX:
 822                         heading = _(inputbox_instructions_hex);
 823                         break;
 824                 case S_STRING:
 825                         heading = _(inputbox_instructions_string);
 826                         break;
 827                 default:
 828                         heading = "Internal mconf error!";
 829                 }
 830                 dialog_clear();
 831                 res = dialog_inputbox(prompt ? prompt : _("Main Menu"),
 832                                       heading, 10, 75,
 833                                       sym_get_string_value(menu->sym));
 834                 switch (res) {
 835                 case 0:
 836                         if (sym_set_string_value(menu->sym, dialog_input_result))
 837                                 return;
 838                         show_textbox(NULL, _("You have made an invalid entry."), 5, 43);
 839                         break;
 840                 case 1:
 841                         show_help(menu);
 842                         break;
 843                 case KEY_ESC:
 844                         return;
 845                 }
 846         }
 847 }
 848
 849 static void conf_load(void)
 850 {
 851
 852         while (1) {
 853                 int res;
 854                 dialog_clear();
 855                 res = dialog_inputbox(NULL, load_config_text,
 856                                       11, 55, filename);
 857                 switch(res) {
 858                 case 0:
 859                         if (!dialog_input_result[0])
 860                                 return;
 861                         if (!conf_read(dialog_input_result)) {
 862                                 set_config_filename(dialog_input_result);
 863                                 return;
 864                         }
 865                         show_textbox(NULL, _("File does not exist!"), 5, 38);
 866                         break;
 867                 case 1:
 868                         show_helptext(_("Load Alternate Configuration"), load_config_help);
 869                         break;
 870                 case KEY_ESC:
 871                         return;
 872                 }
 873         }
 874 }
 875
 876 static void conf_save(void)
 877 {
 878         while (1) {
 879                 int res;
 880                 dialog_clear();
 881                 res = dialog_inputbox(NULL, save_config_text,
 882                                       11, 55, filename);
 883                 switch(res) {
 884                 case 0:
 885                         if (!dialog_input_result[0])
 886                                 return;
 887                         if (!conf_write(dialog_input_result)) {
 888                                 set_config_filename(dialog_input_result);
 889                                 return;
 890                         }
 891                         show_textbox(NULL, _("Can't create file!  Probably a nonexistent directory."), 5, 60);
 892                         break;
 893                 case 1:
 894                         show_helptext(_("Save Alternate Configuration"), save_config_help);
 895                         break;
 896                 case KEY_ESC:
 897                         return;
 898                 }
 899         }
 900 }
 901
 902 static void conf_cleanup(void)
 903 {
 904         tcsetattr(1, TCSAFLUSH, &ios_org);
 905 }
 906
 907 int main(int ac, char **av)
 908 {
 909         char *mode;
 910         int res;
 911
 912         setlocale(LC_ALL, "");
 913         bindtextdomain(PACKAGE, LOCALEDIR);
 914         textdomain(PACKAGE);
 915
 916         conf_parse(av[1]);
 917         conf_read(NULL);
 918
 919         mode = getenv("MENUCONFIG_MODE");
 920         if (mode) {
 921                 if (!strcasecmp(mode, "single_menu"))
 922                         single_menu_mode = 1;
 923         }
 924
 925         tcgetattr(1, &ios_org);
 926         atexit(conf_cleanup);
 927         init_wsize();
 928         reset_dialog();
 929         init_dialog(NULL);
 930         set_config_filename(conf_get_configname());
 931         do {
 932                 conf(&rootmenu);
 933                 dialog_clear();
 934                 if (conf_get_changed())
 935                         res = dialog_yesno(NULL,
 936                                            _("Do you wish to save your "
 937                                              "new Buildroot configuration?\n"
 938                                              "<ESC><ESC> to continue."),
 939                                            6, 60);
 940                 else
 941                         res = -1;
 942         } while (res == KEY_ESC);
 943         end_dialog();
 944
 945         switch (res) {
 946         case 0:
 947                 if (conf_write(filename)) {
 948                         fprintf(stderr, _("\n\n"
 949                                 "Error during writing of the Buildroot configuration.\n"
 950                                 "Your Buildroot configuration changes were NOT saved."
 951                                 "\n\n"));
 952                         return 1;
 953                 }
 954         case -1:
 955                 printf(_("\n\n"
 956                         "*** End of Buildroot configuration.\n"
 957                         "*** Execute 'make' to build Buildroot or try 'make help'."
 958                         "\n\n"));
 959                 break;
 960         default:
 961                 fprintf(stderr, _("\n\n"
 962                         "Your Buildroot configuration changes were NOT saved."
 963                         "\n\n"));
 964         }
 965
 966         return conf_write_autoconf();
 967 }