scripts/kconfig/nconf.c

   1 /*
   2  * Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com?
   3  * Released under the terms of the GNU GPL v2.0.
   4  *
   5  * Derived from menuconfig.
   6  *
   7  */
   8 #define _GNU_SOURCE
   9 #include <string.h>
  10 #include <stdlib.h>
  11
  12 #include "lkc.h"
  13 #include "nconf.h"
  14 #include <ctype.h>
  15
  16 static const char nconf_global_help[] = N_(
  17 "Help windows\n"
  18 "------------\n"
  19 "o  Global help:  Unless in a data entry window, pressing <F1> will give \n"
  20 "   you the global help window, which you are just reading.\n"
  21 "\n"
  22 "o  A short version of the global help is available by pressing <F3>.\n"
  23 "\n"
  24 "o  Local help:  To get help related to the current menu entry, use any\n"
  25 "   of <?> <h>, or if in a data entry window then press <F1>.\n"
  26 "\n"
  27 "\n"
  28 "Menu entries\n"
  29 "------------\n"
  30 "This interface lets you select features and parameters for the kernel\n"
  31 "build.  Kernel features can either be built-in, modularized, or removed.\n"
  32 "Parameters must be entered as text or decimal or hexadecimal numbers.\n"
  33 "\n"
  34 "Menu entries beginning with following braces represent features that\n"
  35 "  [ ]  can be built in or removed\n"
  36 "  < >  can be built in, modularized or removed\n"
  37 "  { }  can be built in or modularized, are selected by another feature\n"
  38 "  - -  are selected by another feature\n"
  39 "  XXX  cannot be selected.  Symbol Info <F2> tells you why.\n"
  40 "*, M or whitespace inside braces means to build in, build as a module\n"
  41 "or to exclude the feature respectively.\n"
  42 "\n"
  43 "To change any of these features, highlight it with the movement keys\n"
  44 "listed below and press <y> to build it in, <m> to make it a module or\n"
  45 "<n> to remove it.  You may press the <Space> key to cycle through the\n"
  46 "available options.\n"
  47 "\n"
  48 "A trailing \"--->\" designates a submenu.\n"
  49 "\n"
  50 "\n"
  51 "Menu navigation keys\n"
  52 "----------------------------------------------------------------------\n"
  53 "Linewise up                 <Up>\n"
  54 "Linewise down               <Down>\n"
  55 "Pagewise up                 <Page Up>\n"
  56 "Pagewise down               <Page Down>\n"
  57 "First entry                 <Home>\n"
  58 "Last entry                  <End>\n"
  59 "Enter a submenu             <Right>  <Enter>\n"
  60 "Go back to parent menu      <Left>   <Esc>  <F5>\n"
  61 "Close a help window         <Enter>  <Esc>  <F5>\n"
  62 "Close entry window, apply   <Enter>\n"
  63 "Close entry window, forget  <Esc>  <F5>\n"
  64 "Start incremental, case-insensitive search for STRING in menu entries,\n"
  65 "    no regex support, STRING is displayed in upper left corner\n"
  66 "                            </>STRING\n"
  67 "    Remove last character   <Backspace>\n"
  68 "    Jump to next hit        <Down>\n"
  69 "    Jump to previous hit    <Up>\n"
  70 "Exit menu search mode       </>  <Esc>\n"
  71 "Search for configuration variables with or without leading CONFIG_\n"
  72 "                            <F8>RegExpr<Enter>\n"
  73 "Verbose search help         <F8><F1>\n"
  74 "----------------------------------------------------------------------\n"
  75 "\n"
  76 "Unless in a data entry window, key <1> may be used instead of <F1>,\n"
  77 "<2> instead of <F2>, etc.\n"
  78 "\n"
  79 "\n"
  80 "Radiolist (Choice list)\n"
  81 "-----------------------\n"
  82 "Use the movement keys listed above to select the option you wish to set\n"
  83 "and press <Space>.\n"
  84 "\n"
  85 "\n"
  86 "Data entry\n"
  87 "----------\n"
  88 "Enter the requested information and press <Enter>.  Hexadecimal values\n"
  89 "may be entered without the \"0x\" prefix.\n"
  90 "\n"
  91 "\n"
  92 "Text Box (Help Window)\n"
  93 "----------------------\n"
  94 "Use movement keys as listed in table above.\n"
  95 "\n"
  96 "Press any of <Enter> <Esc> <q> <F5> <F9> to exit.\n"
  97 "\n"
  98 "\n"
  99 "Alternate configuration files\n"
 100 "-----------------------------\n"
 101 "nconfig supports switching between different configurations.\n"
 102 "Press <F6> to save your current configuration.  Press <F7> and enter\n"
 103 "a file name to load a previously saved configuration.\n"
 104 "\n"
 105 "\n"
 106 "Terminal configuration\n"
 107 "----------------------\n"
 108 "If you use nconfig in a xterm window, make sure your TERM environment\n"
 109 "variable specifies a terminal configuration which supports at least\n"
 110 "16 colors.  Otherwise nconfig will look rather bad.\n"
 111 "\n"
 112 "If the \"stty size\" command reports the current terminalsize correctly,\n"
 113 "nconfig will adapt to sizes larger than the traditional 80x25 \"standard\"\n"
 114 "and display longer menus properly.\n"
 115 "\n"
 116 "\n"
 117 "Single menu mode\n"
 118 "----------------\n"
 119 "If you prefer to have all of the menu entries listed in a single menu,\n"
 120 "rather than the default multimenu hierarchy, run nconfig with\n"
 121 "NCONFIG_MODE environment variable set to single_menu.  Example:\n"
 122 "\n"
 123 "make NCONFIG_MODE=single_menu nconfig\n"
 124 "\n"
 125 "<Enter> will then unfold the appropriate category, or fold it if it\n"
 126 "is already unfolded.  Folded menu entries will be designated by a\n"
 127 "leading \"++>\" and unfolded entries by a leading \"-->\".\n"
 128 "\n"
 129 "Note that this mode can eventually be a little more CPU expensive than\n"
 130 "the default mode, especially with a larger number of unfolded submenus.\n"
 131 "\n"),
 132 menu_no_f_instructions[] = N_(
 133 "Legend:  [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
 134 "Submenus are designated by a trailing \"--->\".\n"
 135 "\n"
 136 "Use the following keys to navigate the menus:\n"
 137 "Move up or down with <Up> and <Down>.\n"
 138 "Enter a submenu with <Enter> or <Right>.\n"
 139 "Exit a submenu to its parent menu with <Esc> or <Left>.\n"
 140 "Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
 141 "Pressing <Space> cycles through the available options.\n"
 142 "To search for menu entries press </>.\n"
 143 "<Esc> always leaves the current window.\n"
 144 "\n"
 145 "You do not have function keys support.\n"
 146 "Press <1> instead of <F1>, <2> instead of <F2>, etc.\n"
 147 "For verbose global help use key <1>.\n"
 148 "For help related to the current menu entry press <?> or <h>.\n"),
 149 menu_instructions[] = N_(
 150 "Legend:  [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
 151 "Submenus are designated by a trailing \"--->\".\n"
 152 "\n"
 153 "Use the following keys to navigate the menus:\n"
 154 "Move up or down with <Up> or <Down>.\n"
 155 "Enter a submenu with <Enter> or <Right>.\n"
 156 "Exit a submenu to its parent menu with <Esc> or <Left>.\n"
 157 "Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
 158 "Pressing <Space> cycles through the available options.\n"
 159 "To search for menu entries press </>.\n"
 160 "<Esc> always leaves the current window.\n"
 161 "\n"
 162 "Pressing <1> may be used instead of <F1>, <2> instead of <F2>, etc.\n"
 163 "For verbose global help press <F1>.\n"
 164 "For help related to the current menu entry press <?> or <h>.\n"),
 165 radiolist_instructions[] = N_(
 166 "Press <Up>, <Down>, <Home> or <End> to navigate a radiolist, select\n"
 167 "with <Space>.\n"
 168 "For help related to the current entry press <?> or <h>.\n"
 169 "For global help press <F1>.\n"),
 170 inputbox_instructions_int[] = N_(
 171 "Please enter a decimal value.\n"
 172 "Fractions will not be accepted.\n"
 173 "Press <Enter> to apply, <Esc> to cancel."),
 174 inputbox_instructions_hex[] = N_(
 175 "Please enter a hexadecimal value.\n"
 176 "Press <Enter> to apply, <Esc> to cancel."),
 177 inputbox_instructions_string[] = N_(
 178 "Please enter a string value.\n"
 179 "Press <Enter> to apply, <Esc> to cancel."),
 180 setmod_text[] = N_(
 181 "This feature depends on another feature which has been configured as a\n"
 182 "module.  As a result, the current feature will be built as a module too."),
 183 load_config_text[] = N_(
 184 "Enter the name of the configuration file you wish to load.\n"
 185 "Accept the name shown to restore the configuration you last\n"
 186 "retrieved.  Leave empty to abort."),
 187 load_config_help[] = N_(
 188 "For various reasons, one may wish to keep several different\n"
 189 "configurations available on a single machine.\n"
 190 "\n"
 191 "If you have saved a previous configuration in a file other than the\n"
 192 "default one, entering its name here will allow you to load and modify\n"
 193 "that configuration.\n"
 194 "\n"
 195 "Leave empty to abort.\n"),
 196 save_config_text[] = N_(
 197 "Enter a filename to which this configuration should be saved\n"
 198 "as an alternate.  Leave empty to abort."),
 199 save_config_help[] = N_(
 200 "For various reasons, one may wish to keep several different\n"
 201 "configurations available on a single machine.\n"
 202 "\n"
 203 "Entering a file name here will allow you to later retrieve, modify\n"
 204 "and use the current configuration as an alternate to whatever\n"
 205 "configuration options you have selected at that time.\n"
 206 "\n"
 207 "Leave empty to abort.\n"),
 208 search_help[] = N_(
 209 "Search for symbols (configuration variable names CONFIG_*) and display\n"
 210 "their relations.  Regular expressions are supported.\n"
 211 "Example:  Search for \"^FOO\".\n"
 212 "Result:\n"
 213 "-----------------------------------------------------------------\n"
 214 "Symbol: FOO [ = m]\n"
 215 "Prompt: Foo bus is used to drive the bar HW\n"
 216 "Defined at drivers/pci/Kconfig:47\n"
 217 "Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
 218 "Location:\n"
 219 "  -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
 220 "    -> PCI support (PCI [ = y])\n"
 221 "      -> PCI access mode (<choice> [ = y])\n"
 222 "Selects: LIBCRC32\n"
 223 "Selected by: BAR\n"
 224 "-----------------------------------------------------------------\n"
 225 "o  The line 'Prompt:' shows the text displayed for this symbol in\n"
 226 "   the menu hierarchy.\n"
 227 "o  The 'Defined at' line tells at what file / line number the symbol is\n"
 228 "   defined.\n"
 229 "o  The 'Depends on:' line lists symbols that need to be defined for\n"
 230 "   this symbol to be visible and selectable in the menu.\n"
 231 "o  The 'Location:' lines tell, where in the menu structure this symbol\n"
 232 "   is located.  A location followed by a [ = y] indicates that this is\n"
 233 "   a selectable menu item, and the current value is displayed inside\n"
 234 "   brackets.\n"
 235 "o  The 'Selects:' line tells, what symbol will be automatically selected\n"
 236 "   if this symbol is selected (y or m).\n"
 237 "o  The 'Selected by' line tells what symbol has selected this symbol.\n"
 238 "\n"
 239 "Only relevant lines are shown.\n"
 240 "\n\n"
 241 "Search examples:\n"
 242 "USB  => find all symbols containing USB\n"
 243 "^USB => find all symbols starting with USB\n"
 244 "USB$ => find all symbols ending with USB\n"
 245 "\n");
 246
 247 struct mitem {
 248         char str[256];
 249         char tag;
 250         void *usrptr;
 251         int is_visible;
 252 };
 253
 254 #define MAX_MENU_ITEMS 4096
 255 static int show_all_items;
 256 static int indent;
 257 static struct menu *current_menu;
 258 static int child_count;
 259 static int single_menu_mode;
 260 /* the window in which all information appears */
 261 static WINDOW *main_window;
 262 /* the largest size of the menu window */
 263 static int mwin_max_lines;
 264 static int mwin_max_cols;
 265 /* the window in which we show option buttons */
 266 static MENU *curses_menu;
 267 static ITEM *curses_menu_items[MAX_MENU_ITEMS];
 268 static struct mitem k_menu_items[MAX_MENU_ITEMS];
 269 static int items_num;
 270 static int global_exit;
 271 /* the currently selected button */
 272 const char *current_instructions = menu_instructions;
 273
 274 static char *dialog_input_result;
 275 static int dialog_input_result_len;
 276
 277 static void conf(struct menu *menu);
 278 static void conf_choice(struct menu *menu);
 279 static void conf_string(struct menu *menu);
 280 static void conf_load(void);
 281 static void conf_save(void);
 282 static void show_help(struct menu *menu);
 283 static int do_exit(void);
 284 static void setup_windows(void);
 285 static void search_conf(void);
 286
 287 typedef void (*function_key_handler_t)(int *key, struct menu *menu);
 288 static void handle_f1(int *key, struct menu *current_item);
 289 static void handle_f2(int *key, struct menu *current_item);
 290 static void handle_f3(int *key, struct menu *current_item);
 291 static void handle_f4(int *key, struct menu *current_item);
 292 static void handle_f5(int *key, struct menu *current_item);
 293 static void handle_f6(int *key, struct menu *current_item);
 294 static void handle_f7(int *key, struct menu *current_item);
 295 static void handle_f8(int *key, struct menu *current_item);
 296 static void handle_f9(int *key, struct menu *current_item);
 297
 298 struct function_keys {
 299         const char *key_str;
 300         const char *func;
 301         function_key key;
 302         function_key_handler_t handler;
 303 };
 304
 305 static const int function_keys_num = 9;
 306 struct function_keys function_keys[] = {
 307         {
 308                 .key_str = "F1",
 309                 .func = "Help",
 310                 .key = F_HELP,
 311                 .handler = handle_f1,
 312         },
 313         {
 314                 .key_str = "F2",
 315                 .func = "SymInfo",
 316                 .key = F_SYMBOL,
 317                 .handler = handle_f2,
 318         },
 319         {
 320                 .key_str = "F3",
 321                 .func = "Help 2",
 322                 .key = F_INSTS,
 323                 .handler = handle_f3,
 324         },
 325         {
 326                 .key_str = "F4",
 327                 .func = "ShowAll",
 328                 .key = F_CONF,
 329                 .handler = handle_f4,
 330         },
 331         {
 332                 .key_str = "F5",
 333                 .func = "Back",
 334                 .key = F_BACK,
 335                 .handler = handle_f5,
 336         },
 337         {
 338                 .key_str = "F6",
 339                 .func = "Save",
 340                 .key = F_SAVE,
 341                 .handler = handle_f6,
 342         },
 343         {
 344                 .key_str = "F7",
 345                 .func = "Load",
 346                 .key = F_LOAD,
 347                 .handler = handle_f7,
 348         },
 349         {
 350                 .key_str = "F8",
 351                 .func = "SymSearch",
 352                 .key = F_SEARCH,
 353                 .handler = handle_f8,
 354         },
 355         {
 356                 .key_str = "F9",
 357                 .func = "Exit",
 358                 .key = F_EXIT,
 359                 .handler = handle_f9,
 360         },
 361 };
 362
 363 static void print_function_line(void)
 364 {
 365         int i;
 366         int offset = 1;
 367         const int skip = 1;
 368
 369         for (i = 0; i < function_keys_num; i++) {
 370                 (void) wattrset(main_window, attributes[FUNCTION_HIGHLIGHT]);
 371                 mvwprintw(main_window, LINES-3, offset,
 372                                 "%s",
 373                                 function_keys[i].key_str);
 374                 (void) wattrset(main_window, attributes[FUNCTION_TEXT]);
 375                 offset += strlen(function_keys[i].key_str);
 376                 mvwprintw(main_window, LINES-3,
 377                                 offset, "%s",
 378                                 function_keys[i].func);
 379                 offset += strlen(function_keys[i].func) + skip;
 380         }
 381         (void) wattrset(main_window, attributes[NORMAL]);
 382 }
 383
 384 /* help */
 385 static void handle_f1(int *key, struct menu *current_item)
 386 {
 387         show_scroll_win(main_window,
 388                         _("Global help"), _(nconf_global_help));
 389         return;
 390 }
 391
 392 /* symbole help */
 393 static void handle_f2(int *key, struct menu *current_item)
 394 {
 395         show_help(current_item);
 396         return;
 397 }
 398
 399 /* instructions */
 400 static void handle_f3(int *key, struct menu *current_item)
 401 {
 402         show_scroll_win(main_window,
 403                         _("Short help"),
 404                         _(current_instructions));
 405         return;
 406 }
 407
 408 /* config */
 409 static void handle_f4(int *key, struct menu *current_item)
 410 {
 411         int res = btn_dialog(main_window,
 412                         _("Show all symbols?"),
 413                         2,
 414                         "   <Show All>   ",
 415                         "<Don't show all>");
 416         if (res == 0)
 417                 show_all_items = 1;
 418         else if (res == 1)
 419                 show_all_items = 0;
 420
 421         return;
 422 }
 423
 424 /* back */
 425 static void handle_f5(int *key, struct menu *current_item)
 426 {
 427         *key = KEY_LEFT;
 428         return;
 429 }
 430
 431 /* save */
 432 static void handle_f6(int *key, struct menu *current_item)
 433 {
 434         conf_save();
 435         return;
 436 }
 437
 438 /* load */
 439 static void handle_f7(int *key, struct menu *current_item)
 440 {
 441         conf_load();
 442         return;
 443 }
 444
 445 /* search */
 446 static void handle_f8(int *key, struct menu *current_item)
 447 {
 448         search_conf();
 449         return;
 450 }
 451
 452 /* exit */
 453 static void handle_f9(int *key, struct menu *current_item)
 454 {
 455         do_exit();
 456         return;
 457 }
 458
 459 /* return != 0 to indicate the key was handles */
 460 static int process_special_keys(int *key, struct menu *menu)
 461 {
 462         int i;
 463
 464         if (*key == KEY_RESIZE) {
 465                 setup_windows();
 466                 return 1;
 467         }
 468
 469         for (i = 0; i < function_keys_num; i++) {
 470                 if (*key == KEY_F(function_keys[i].key) ||
 471                     *key == '0' + function_keys[i].key){
 472                         function_keys[i].handler(key, menu);
 473                         return 1;
 474                 }
 475         }
 476
 477         return 0;
 478 }
 479
 480 static void clean_items(void)
 481 {
 482         int i;
 483         for (i = 0; curses_menu_items[i]; i++)
 484                 free_item(curses_menu_items[i]);
 485         bzero(curses_menu_items, sizeof(curses_menu_items));
 486         bzero(k_menu_items, sizeof(k_menu_items));
 487         items_num = 0;
 488 }
 489
 490 typedef enum {MATCH_TINKER_PATTERN_UP, MATCH_TINKER_PATTERN_DOWN,
 491         FIND_NEXT_MATCH_DOWN, FIND_NEXT_MATCH_UP} match_f;
 492
 493 /* return the index of the matched item, or -1 if no such item exists */
 494 static int get_mext_match(const char *match_str, match_f flag)
 495 {
 496         int match_start = item_index(current_item(curses_menu));
 497         int index;
 498
 499         if (flag == FIND_NEXT_MATCH_DOWN)
 500                 ++match_start;
 501         else if (flag == FIND_NEXT_MATCH_UP)
 502                 --match_start;
 503
 504         index = match_start;
 505         index = (index + items_num) % items_num;
 506         while (true) {
 507                 char *str = k_menu_items[index].str;
 508                 if (strcasestr(str, match_str) != 0)
 509                         return index;
 510                 if (flag == FIND_NEXT_MATCH_UP ||
 511                     flag == MATCH_TINKER_PATTERN_UP)
 512                         --index;
 513                 else
 514                         ++index;
 515                 index = (index + items_num) % items_num;
 516                 if (index == match_start)
 517                         return -1;
 518         }
 519 }
 520
 521 /* Make a new item. */
 522 static void item_make(struct menu *menu, char tag, const char *fmt, ...)
 523 {
 524         va_list ap;
 525
 526         if (items_num > MAX_MENU_ITEMS-1)
 527                 return;
 528
 529         bzero(&k_menu_items[items_num], sizeof(k_menu_items[0]));
 530         k_menu_items[items_num].tag = tag;
 531         k_menu_items[items_num].usrptr = menu;
 532         if (menu != NULL)
 533                 k_menu_items[items_num].is_visible =
 534                         menu_is_visible(menu);
 535         else
 536                 k_menu_items[items_num].is_visible = 1;
 537
 538         va_start(ap, fmt);
 539         vsnprintf(k_menu_items[items_num].str,
 540                   sizeof(k_menu_items[items_num].str),
 541                   fmt, ap);
 542         va_end(ap);
 543
 544         if (!k_menu_items[items_num].is_visible)
 545                 memcpy(k_menu_items[items_num].str, "XXX", 3);
 546
 547         curses_menu_items[items_num] = new_item(
 548                         k_menu_items[items_num].str,
 549                         k_menu_items[items_num].str);
 550         set_item_userptr(curses_menu_items[items_num],
 551                         &k_menu_items[items_num]);
 552         /*
 553         if (!k_menu_items[items_num].is_visible)
 554                 item_opts_off(curses_menu_items[items_num], O_SELECTABLE);
 555         */
 556
 557         items_num++;
 558         curses_menu_items[items_num] = NULL;
 559 }
 560
 561 /* very hackish. adds a string to the last item added */
 562 static void item_add_str(const char *fmt, ...)
 563 {
 564         va_list ap;
 565         int index = items_num-1;
 566         char new_str[256];
 567         char tmp_str[256];
 568
 569         if (index < 0)
 570                 return;
 571
 572         va_start(ap, fmt);
 573         vsnprintf(new_str, sizeof(new_str), fmt, ap);
 574         va_end(ap);
 575         snprintf(tmp_str, sizeof(tmp_str), "%s%s",
 576                         k_menu_items[index].str, new_str);
 577         strncpy(k_menu_items[index].str,
 578                 tmp_str,
 579                 sizeof(k_menu_items[index].str));
 580
 581         free_item(curses_menu_items[index]);
 582         curses_menu_items[index] = new_item(
 583                         k_menu_items[index].str,
 584                         k_menu_items[index].str);
 585         set_item_userptr(curses_menu_items[index],
 586                         &k_menu_items[index]);
 587 }
 588
 589 /* get the tag of the currently selected item */
 590 static char item_tag(void)
 591 {
 592         ITEM *cur;
 593         struct mitem *mcur;
 594
 595         cur = current_item(curses_menu);
 596         if (cur == NULL)
 597                 return 0;
 598         mcur = (struct mitem *) item_userptr(cur);
 599         return mcur->tag;
 600 }
 601
 602 static int curses_item_index(void)
 603 {
 604         return  item_index(current_item(curses_menu));
 605 }
 606
 607 static void *item_data(void)
 608 {
 609         ITEM *cur;
 610         struct mitem *mcur;
 611
 612         cur = current_item(curses_menu);
 613         if (!cur)
 614                 return NULL;
 615         mcur = (struct mitem *) item_userptr(cur);
 616         return mcur->usrptr;
 617
 618 }
 619
 620 static int item_is_tag(char tag)
 621 {
 622         return item_tag() == tag;
 623 }
 624
 625 static char filename[PATH_MAX+1];
 626 static char menu_backtitle[PATH_MAX+128];
 627 static const char *set_config_filename(const char *config_filename)
 628 {
 629         int size;
 630
 631         size = snprintf(menu_backtitle, sizeof(menu_backtitle),
 632                         "%s - %s", config_filename, rootmenu.prompt->text);
 633         if (size >= sizeof(menu_backtitle))
 634                 menu_backtitle[sizeof(menu_backtitle)-1] = '\0';
 635
 636         size = snprintf(filename, sizeof(filename), "%s", config_filename);
 637         if (size >= sizeof(filename))
 638                 filename[sizeof(filename)-1] = '\0';
 639         return menu_backtitle;
 640 }
 641
 642 /* return = 0 means we are successful.
 643  * -1 means go on doing what you were doing
 644  */
 645 static int do_exit(void)
 646 {
 647         int res;
 648         if (!conf_get_changed()) {
 649                 global_exit = 1;
 650                 return 0;
 651         }
 652         res = btn_dialog(main_window,
 653                         _("Do you wish to save your new configuration?\n"
 654                                 "<ESC> to cancel and resume nconfig."),
 655                         2,
 656                         "   <save>   ",
 657                         "<don't save>");
 658         if (res == KEY_EXIT) {
 659                 global_exit = 0;
 660                 return -1;
 661         }
 662
 663         /* if we got here, the user really wants to exit */
 664         switch (res) {
 665         case 0:
 666                 res = conf_write(filename);
 667                 if (res)
 668                         btn_dialog(
 669                                 main_window,
 670                                 _("Error during writing of configuration.\n"
 671                                   "Your configuration changes were NOT saved."),
 672                                   1,
 673                                   "<OK>");
 674                 break;
 675         default:
 676                 btn_dialog(
 677                         main_window,
 678                         _("Your configuration changes were NOT saved."),
 679                         1,
 680                         "<OK>");
 681                 break;
 682         }
 683         global_exit = 1;
 684         return 0;
 685 }
 686
 687
 688 static void search_conf(void)
 689 {
 690         struct symbol **sym_arr;
 691         struct gstr res;
 692         struct gstr title;
 693         char *dialog_input;
 694         int dres;
 695
 696         title = str_new();
 697         str_printf( &title, _("Enter %s (sub)string to search for "
 698                               "(with or without \"%s\")"), CONFIG_, CONFIG_);
 699
 700 again:
 701         dres = dialog_inputbox(main_window,
 702                         _("Search Configuration Parameter"),
 703                         str_get(&title),
 704                         "", &dialog_input_result, &dialog_input_result_len);
 705         switch (dres) {
 706         case 0:
 707                 break;
 708         case 1:
 709                 show_scroll_win(main_window,
 710                                 _("Search Configuration"), search_help);
 711                 goto again;
 712         default:
 713                 str_free(&title);
 714                 return;
 715         }
 716
 717         /* strip the prefix if necessary */
 718         dialog_input = dialog_input_result;
 719         if (strncasecmp(dialog_input_result, CONFIG_, strlen(CONFIG_)) == 0)
 720                 dialog_input += strlen(CONFIG_);
 721
 722         sym_arr = sym_re_search(dialog_input);
 723         res = get_relations_str(sym_arr, NULL);
 724         free(sym_arr);
 725         show_scroll_win(main_window,
 726                         _("Search Results"), str_get(&res));
 727         str_free(&res);
 728         str_free(&title);
 729 }
 730
 731
 732 static void build_conf(struct menu *menu)
 733 {
 734         struct symbol *sym;
 735         struct property *prop;
 736         struct menu *child;
 737         int type, tmp, doint = 2;
 738         tristate val;
 739         char ch;
 740
 741         if (!menu || (!show_all_items && !menu_is_visible(menu)))
 742                 return;
 743
 744         sym = menu->sym;
 745         prop = menu->prompt;
 746         if (!sym) {
 747                 if (prop && menu != current_menu) {
 748                         const char *prompt = menu_get_prompt(menu);
 749                         enum prop_type ptype;
 750                         ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
 751                         switch (ptype) {
 752                         case P_MENU:
 753                                 child_count++;
 754                                 prompt = _(prompt);
 755                                 if (single_menu_mode) {
 756                                         item_make(menu, 'm',
 757                                                 "%s%*c%s",
 758                                                 menu->data ? "-->" : "++>",
 759                                                 indent + 1, ' ', prompt);
 760                                 } else
 761                                         item_make(menu, 'm',
 762                                                 "   %*c%s  --->",
 763                                                 indent + 1,
 764                                                 ' ', prompt);
 765
 766                                 if (single_menu_mode && menu->data)
 767                                         goto conf_childs;
 768                                 return;
 769                         case P_COMMENT:
 770                                 if (prompt) {
 771                                         child_count++;
 772                                         item_make(menu, ':',
 773                                                 "   %*c*** %s ***",
 774                                                 indent + 1, ' ',
 775                                                 _(prompt));
 776                                 }
 777                                 break;
 778                         default:
 779                                 if (prompt) {
 780                                         child_count++;
 781                                         item_make(menu, ':', "---%*c%s",
 782                                                 indent + 1, ' ',
 783                                                 _(prompt));
 784                                 }
 785                         }
 786                 } else
 787                         doint = 0;
 788                 goto conf_childs;
 789         }
 790
 791         type = sym_get_type(sym);
 792         if (sym_is_choice(sym)) {
 793                 struct symbol *def_sym = sym_get_choice_value(sym);
 794                 struct menu *def_menu = NULL;
 795
 796                 child_count++;
 797                 for (child = menu->list; child; child = child->next) {
 798                         if (menu_is_visible(child) && child->sym == def_sym)
 799                                 def_menu = child;
 800                 }
 801
 802                 val = sym_get_tristate_value(sym);
 803                 if (sym_is_changable(sym)) {
 804                         switch (type) {
 805                         case S_BOOLEAN:
 806                                 item_make(menu, 't', "[%c]",
 807                                                 val == no ? ' ' : '*');
 808                                 break;
 809                         case S_TRISTATE:
 810                                 switch (val) {
 811                                 case yes:
 812                                         ch = '*';
 813                                         break;
 814                                 case mod:
 815                                         ch = 'M';
 816                                         break;
 817                                 default:
 818                                         ch = ' ';
 819                                         break;
 820                                 }
 821                                 item_make(menu, 't', "<%c>", ch);
 822                                 break;
 823                         }
 824                 } else {
 825                         item_make(menu, def_menu ? 't' : ':', "   ");
 826                 }
 827
 828                 item_add_str("%*c%s", indent + 1,
 829                                 ' ', _(menu_get_prompt(menu)));
 830                 if (val == yes) {
 831                         if (def_menu) {
 832                                 item_add_str(" (%s)",
 833                                         _(menu_get_prompt(def_menu)));
 834                                 item_add_str("  --->");
 835                                 if (def_menu->list) {
 836                                         indent += 2;
 837                                         build_conf(def_menu);
 838                                         indent -= 2;
 839                                 }
 840                         }
 841                         return;
 842                 }
 843         } else {
 844                 if (menu == current_menu) {
 845                         item_make(menu, ':',
 846                                 "---%*c%s", indent + 1,
 847                                 ' ', _(menu_get_prompt(menu)));
 848                         goto conf_childs;
 849                 }
 850                 child_count++;
 851                 val = sym_get_tristate_value(sym);
 852                 if (sym_is_choice_value(sym) && val == yes) {
 853                         item_make(menu, ':', "   ");
 854                 } else {
 855                         switch (type) {
 856                         case S_BOOLEAN:
 857                                 if (sym_is_changable(sym))
 858                                         item_make(menu, 't', "[%c]",
 859                                                 val == no ? ' ' : '*');
 860                                 else
 861                                         item_make(menu, 't', "-%c-",
 862                                                 val == no ? ' ' : '*');
 863                                 break;
 864                         case S_TRISTATE:
 865                                 switch (val) {
 866                                 case yes:
 867                                         ch = '*';
 868                                         break;
 869                                 case mod:
 870                                         ch = 'M';
 871                                         break;
 872                                 default:
 873                                         ch = ' ';
 874                                         break;
 875                                 }
 876                                 if (sym_is_changable(sym)) {
 877                                         if (sym->rev_dep.tri == mod)
 878                                                 item_make(menu,
 879                                                         't', "{%c}", ch);
 880                                         else
 881                                                 item_make(menu,
 882                                                         't', "<%c>", ch);
 883                                 } else
 884                                         item_make(menu, 't', "-%c-", ch);
 885                                 break;
 886                         default:
 887                                 tmp = 2 + strlen(sym_get_string_value(sym));
 888                                 item_make(menu, 's', "    (%s)",
 889                                                 sym_get_string_value(sym));
 890                                 tmp = indent - tmp + 4;
 891                                 if (tmp < 0)
 892                                         tmp = 0;
 893                                 item_add_str("%*c%s%s", tmp, ' ',
 894                                                 _(menu_get_prompt(menu)),
 895                                                 (sym_has_value(sym) ||
 896                                                  !sym_is_changable(sym)) ? "" :
 897                                                 _(" (NEW)"));
 898                                 goto conf_childs;
 899                         }
 900                 }
 901                 item_add_str("%*c%s%s", indent + 1, ' ',
 902                                 _(menu_get_prompt(menu)),
 903                                 (sym_has_value(sym) || !sym_is_changable(sym)) ?
 904                                 "" : _(" (NEW)"));
 905                 if (menu->prompt && menu->prompt->type == P_MENU) {
 906                         item_add_str("  --->");
 907                         return;
 908                 }
 909         }
 910
 911 conf_childs:
 912         indent += doint;
 913         for (child = menu->list; child; child = child->next)
 914                 build_conf(child);
 915         indent -= doint;
 916 }
 917
 918 static void reset_menu(void)
 919 {
 920         unpost_menu(curses_menu);
 921         clean_items();
 922 }
 923
 924 /* adjust the menu to show this item.
 925  * prefer not to scroll the menu if possible*/
 926 static void center_item(int selected_index, int *last_top_row)
 927 {
 928         int toprow;
 929
 930         set_top_row(curses_menu, *last_top_row);
 931         toprow = top_row(curses_menu);
 932         if (selected_index < toprow ||
 933             selected_index >= toprow+mwin_max_lines) {
 934                 toprow = max(selected_index-mwin_max_lines/2, 0);
 935                 if (toprow >= item_count(curses_menu)-mwin_max_lines)
 936                         toprow = item_count(curses_menu)-mwin_max_lines;
 937                 set_top_row(curses_menu, toprow);
 938         }
 939         set_current_item(curses_menu,
 940                         curses_menu_items[selected_index]);
 941         *last_top_row = toprow;
 942         post_menu(curses_menu);
 943         refresh_all_windows(main_window);
 944 }
 945
 946 /* this function assumes reset_menu has been called before */
 947 static void show_menu(const char *prompt, const char *instructions,
 948                 int selected_index, int *last_top_row)
 949 {
 950         int maxx, maxy;
 951         WINDOW *menu_window;
 952
 953         current_instructions = instructions;
 954
 955         clear();
 956         (void) wattrset(main_window, attributes[NORMAL]);
 957         print_in_middle(stdscr, 1, 0, COLS,
 958                         menu_backtitle,
 959                         attributes[MAIN_HEADING]);
 960
 961         (void) wattrset(main_window, attributes[MAIN_MENU_BOX]);
 962         box(main_window, 0, 0);
 963         (void) wattrset(main_window, attributes[MAIN_MENU_HEADING]);
 964         mvwprintw(main_window, 0, 3, " %s ", prompt);
 965         (void) wattrset(main_window, attributes[NORMAL]);
 966
 967         set_menu_items(curses_menu, curses_menu_items);
 968
 969         /* position the menu at the middle of the screen */
 970         scale_menu(curses_menu, &maxy, &maxx);
 971         maxx = min(maxx, mwin_max_cols-2);
 972         maxy = mwin_max_lines;
 973         menu_window = derwin(main_window,
 974                         maxy,
 975                         maxx,
 976                         2,
 977                         (mwin_max_cols-maxx)/2);
 978         keypad(menu_window, TRUE);
 979         set_menu_win(curses_menu, menu_window);
 980         set_menu_sub(curses_menu, menu_window);
 981
 982         /* must reassert this after changing items, otherwise returns to a
 983          * default of 16
 984          */
 985         set_menu_format(curses_menu, maxy, 1);
 986         center_item(selected_index, last_top_row);
 987         set_menu_format(curses_menu, maxy, 1);
 988
 989         print_function_line();
 990
 991         /* Post the menu */
 992         post_menu(curses_menu);
 993         refresh_all_windows(main_window);
 994 }
 995
 996 static void adj_match_dir(match_f *match_direction)
 997 {
 998         if (*match_direction == FIND_NEXT_MATCH_DOWN)
 999                 *match_direction =
1000                         MATCH_TINKER_PATTERN_DOWN;
1001         else if (*match_direction == FIND_NEXT_MATCH_UP)
1002                 *match_direction =
1003                         MATCH_TINKER_PATTERN_UP;
1004         /* else, do no change.. */
1005 }
1006
1007 struct match_state
1008 {
1009         int in_search;
1010         match_f match_direction;
1011         char pattern[256];
1012 };
1013
1014 /* Return 0 means I have handled the key. In such a case, ans should hold the
1015  * item to center, or -1 otherwise.
1016  * Else return -1 .
1017  */
1018 static int do_match(int key, struct match_state *state, int *ans)
1019 {
1020         char c = (char) key;
1021         int terminate_search = 0;
1022         *ans = -1;
1023         if (key == '/' || (state->in_search && key == 27)) {
1024                 move(0, 0);
1025                 refresh();
1026                 clrtoeol();
1027                 state->in_search = 1-state->in_search;
1028                 bzero(state->pattern, sizeof(state->pattern));
1029                 state->match_direction = MATCH_TINKER_PATTERN_DOWN;
1030                 return 0;
1031         } else if (!state->in_search)
1032                 return 1;
1033
1034         if (isalnum(c) || isgraph(c) || c == ' ') {
1035                 state->pattern[strlen(state->pattern)] = c;
1036                 state->pattern[strlen(state->pattern)] = '\0';
1037                 adj_match_dir(&state->match_direction);
1038                 *ans = get_mext_match(state->pattern,
1039                                 state->match_direction);
1040         } else if (key == KEY_DOWN) {
1041                 state->match_direction = FIND_NEXT_MATCH_DOWN;
1042                 *ans = get_mext_match(state->pattern,
1043                                 state->match_direction);
1044         } else if (key == KEY_UP) {
1045                 state->match_direction = FIND_NEXT_MATCH_UP;
1046                 *ans = get_mext_match(state->pattern,
1047                                 state->match_direction);
1048         } else if (key == KEY_BACKSPACE || key == 127) {
1049                 state->pattern[strlen(state->pattern)-1] = '\0';
1050                 adj_match_dir(&state->match_direction);
1051         } else
1052                 terminate_search = 1;
1053
1054         if (terminate_search) {
1055                 state->in_search = 0;
1056                 bzero(state->pattern, sizeof(state->pattern));
1057                 move(0, 0);
1058                 refresh();
1059                 clrtoeol();
1060                 return -1;
1061         }
1062         return 0;
1063 }
1064
1065 static void conf(struct menu *menu)
1066 {
1067         struct menu *submenu = 0;
1068         const char *prompt = menu_get_prompt(menu);
1069         struct symbol *sym;
1070         int res;
1071         int current_index = 0;
1072         int last_top_row = 0;
1073         struct match_state match_state = {
1074                 .in_search = 0,
1075                 .match_direction = MATCH_TINKER_PATTERN_DOWN,
1076                 .pattern = "",
1077         };
1078
1079         while (!global_exit) {
1080                 reset_menu();
1081                 current_menu = menu;
1082                 build_conf(menu);
1083                 if (!child_count)
1084                         break;
1085
1086                 show_menu(prompt ? _(prompt) : _("Main Menu"),
1087                                 _(menu_instructions),
1088                                 current_index, &last_top_row);
1089                 keypad((menu_win(curses_menu)), TRUE);
1090                 while (!global_exit) {
1091                         if (match_state.in_search) {
1092                                 mvprintw(0, 0,
1093                                         "searching: %s", match_state.pattern);
1094                                 clrtoeol();
1095                         }
1096                         refresh_all_windows(main_window);
1097                         res = wgetch(menu_win(curses_menu));
1098                         if (!res)
1099                                 break;
1100                         if (do_match(res, &match_state, &current_index) == 0) {
1101                                 if (current_index != -1)
1102                                         center_item(current_index,
1103                                                     &last_top_row);
1104                                 continue;
1105                         }
1106                         if (process_special_keys(&res,
1107                                                 (struct menu *) item_data()))
1108                                 break;
1109                         switch (res) {
1110                         case KEY_DOWN:
1111                                 menu_driver(curses_menu, REQ_DOWN_ITEM);
1112                                 break;
1113                         case KEY_UP:
1114                                 menu_driver(curses_menu, REQ_UP_ITEM);
1115                                 break;
1116                         case KEY_NPAGE:
1117                                 menu_driver(curses_menu, REQ_SCR_DPAGE);
1118                                 break;
1119                         case KEY_PPAGE:
1120                                 menu_driver(curses_menu, REQ_SCR_UPAGE);
1121                                 break;
1122                         case KEY_HOME:
1123                                 menu_driver(curses_menu, REQ_FIRST_ITEM);
1124                                 break;
1125                         case KEY_END:
1126                                 menu_driver(curses_menu, REQ_LAST_ITEM);
1127                                 break;
1128                         case 'h':
1129                         case '?':
1130                                 show_help((struct menu *) item_data());
1131                                 break;
1132                         }
1133                         if (res == 10 || res == 27 ||
1134                                 res == 32 || res == 'n' || res == 'y' ||
1135                                 res == KEY_LEFT || res == KEY_RIGHT ||
1136                                 res == 'm')
1137                                 break;
1138                         refresh_all_windows(main_window);
1139                 }
1140
1141                 refresh_all_windows(main_window);
1142                 /* if ESC or left*/
1143                 if (res == 27 || (menu != &rootmenu && res == KEY_LEFT))
1144                         break;
1145
1146                 /* remember location in the menu */
1147                 last_top_row = top_row(curses_menu);
1148                 current_index = curses_item_index();
1149
1150                 if (!item_tag())
1151                         continue;
1152
1153                 submenu = (struct menu *) item_data();
1154                 if (!submenu || !menu_is_visible(submenu))
1155                         continue;
1156                 sym = submenu->sym;
1157
1158                 switch (res) {
1159                 case ' ':
1160                         if (item_is_tag('t'))
1161                                 sym_toggle_tristate_value(sym);
1162                         else if (item_is_tag('m'))
1163                                 conf(submenu);
1164                         break;
1165                 case KEY_RIGHT:
1166                 case 10: /* ENTER WAS PRESSED */
1167                         switch (item_tag()) {
1168                         case 'm':
1169                                 if (single_menu_mode)
1170                                         submenu->data =
1171                                                 (void *) (long) !submenu->data;
1172                                 else
1173                                         conf(submenu);
1174                                 break;
1175                         case 't':
1176                                 if (sym_is_choice(sym) &&
1177                                     sym_get_tristate_value(sym) == yes)
1178                                         conf_choice(submenu);
1179                                 else if (submenu->prompt &&
1180                                          submenu->prompt->type == P_MENU)
1181                                         conf(submenu);
1182                                 else if (res == 10)
1183                                         sym_toggle_tristate_value(sym);
1184                                 break;
1185                         case 's':
1186                                 conf_string(submenu);
1187                                 break;
1188                         }
1189                         break;
1190                 case 'y':
1191                         if (item_is_tag('t')) {
1192                                 if (sym_set_tristate_value(sym, yes))
1193                                         break;
1194                                 if (sym_set_tristate_value(sym, mod))
1195                                         btn_dialog(main_window, setmod_text, 0);
1196                         }
1197                         break;
1198                 case 'n':
1199                         if (item_is_tag('t'))
1200                                 sym_set_tristate_value(sym, no);
1201                         break;
1202                 case 'm':
1203                         if (item_is_tag('t'))
1204                                 sym_set_tristate_value(sym, mod);
1205                         break;
1206                 }
1207         }
1208 }
1209
1210 static void conf_message_callback(const char *fmt, va_list ap)
1211 {
1212         char buf[1024];
1213
1214         vsnprintf(buf, sizeof(buf), fmt, ap);
1215         btn_dialog(main_window, buf, 1, "<OK>");
1216 }
1217
1218 static void show_help(struct menu *menu)
1219 {
1220         struct gstr help;
1221
1222         if (!menu)
1223                 return;
1224
1225         help = str_new();
1226         menu_get_ext_help(menu, &help);
1227         show_scroll_win(main_window, _(menu_get_prompt(menu)), str_get(&help));
1228         str_free(&help);
1229 }
1230
1231 static void conf_choice(struct menu *menu)
1232 {
1233         const char *prompt = _(menu_get_prompt(menu));
1234         struct menu *child = 0;
1235         struct symbol *active;
1236         int selected_index = 0;
1237         int last_top_row = 0;
1238         int res, i = 0;
1239         struct match_state match_state = {
1240                 .in_search = 0,
1241                 .match_direction = MATCH_TINKER_PATTERN_DOWN,
1242                 .pattern = "",
1243         };
1244
1245         active = sym_get_choice_value(menu->sym);
1246         /* this is mostly duplicated from the conf() function. */
1247         while (!global_exit) {
1248                 reset_menu();
1249
1250                 for (i = 0, child = menu->list; child; child = child->next) {
1251                         if (!show_all_items && !menu_is_visible(child))
1252                                 continue;
1253
1254                         if (child->sym == sym_get_choice_value(menu->sym))
1255                                 item_make(child, ':', "<X> %s",
1256                                                 _(menu_get_prompt(child)));
1257                         else if (child->sym)
1258                                 item_make(child, ':', "    %s",
1259                                                 _(menu_get_prompt(child)));
1260                         else
1261                                 item_make(child, ':', "*** %s ***",
1262                                                 _(menu_get_prompt(child)));
1263
1264                         if (child->sym == active){
1265                                 last_top_row = top_row(curses_menu);
1266                                 selected_index = i;
1267                         }
1268                         i++;
1269                 }
1270                 show_menu(prompt ? _(prompt) : _("Choice Menu"),
1271                                 _(radiolist_instructions),
1272                                 selected_index,
1273                                 &last_top_row);
1274                 while (!global_exit) {
1275                         if (match_state.in_search) {
1276                                 mvprintw(0, 0, "searching: %s",
1277                                          match_state.pattern);
1278                                 clrtoeol();
1279                         }
1280                         refresh_all_windows(main_window);
1281                         res = wgetch(menu_win(curses_menu));
1282                         if (!res)
1283                                 break;
1284                         if (do_match(res, &match_state, &selected_index) == 0) {
1285                                 if (selected_index != -1)
1286                                         center_item(selected_index,
1287                                                     &last_top_row);
1288                                 continue;
1289                         }
1290                         if (process_special_keys(
1291                                                 &res,
1292                                                 (struct menu *) item_data()))
1293                                 break;
1294                         switch (res) {
1295                         case KEY_DOWN:
1296                                 menu_driver(curses_menu, REQ_DOWN_ITEM);
1297                                 break;
1298                         case KEY_UP:
1299                                 menu_driver(curses_menu, REQ_UP_ITEM);
1300                                 break;
1301                         case KEY_NPAGE:
1302                                 menu_driver(curses_menu, REQ_SCR_DPAGE);
1303                                 break;
1304                         case KEY_PPAGE:
1305                                 menu_driver(curses_menu, REQ_SCR_UPAGE);
1306                                 break;
1307                         case KEY_HOME:
1308                                 menu_driver(curses_menu, REQ_FIRST_ITEM);
1309                                 break;
1310                         case KEY_END:
1311                                 menu_driver(curses_menu, REQ_LAST_ITEM);
1312                                 break;
1313                         case 'h':
1314                         case '?':
1315                                 show_help((struct menu *) item_data());
1316                                 break;
1317                         }
1318                         if (res == 10 || res == 27 || res == ' ' ||
1319                                         res == KEY_LEFT){
1320                                 break;
1321                         }
1322                         refresh_all_windows(main_window);
1323                 }
1324                 /* if ESC or left */
1325                 if (res == 27 || res == KEY_LEFT)
1326                         break;
1327
1328                 child = item_data();
1329                 if (!child || !menu_is_visible(child) || !child->sym)
1330                         continue;
1331                 switch (res) {
1332                 case ' ':
1333                 case  10:
1334                 case KEY_RIGHT:
1335                         sym_set_tristate_value(child->sym, yes);
1336                         return;
1337                 case 'h':
1338                 case '?':
1339                         show_help(child);
1340                         active = child->sym;
1341                         break;
1342                 case KEY_EXIT:
1343                         return;
1344                 }
1345         }
1346 }
1347
1348 static void conf_string(struct menu *menu)
1349 {
1350         const char *prompt = menu_get_prompt(menu);
1351
1352         while (1) {
1353                 int res;
1354                 const char *heading;
1355
1356                 switch (sym_get_type(menu->sym)) {
1357                 case S_INT:
1358                         heading = _(inputbox_instructions_int);
1359                         break;
1360                 case S_HEX:
1361                         heading = _(inputbox_instructions_hex);
1362                         break;
1363                 case S_STRING:
1364                         heading = _(inputbox_instructions_string);
1365                         break;
1366                 default:
1367                         heading = _("Internal nconf error!");
1368                 }
1369                 res = dialog_inputbox(main_window,
1370                                 prompt ? _(prompt) : _("Main Menu"),
1371                                 heading,
1372                                 sym_get_string_value(menu->sym),
1373                                 &dialog_input_result,
1374                                 &dialog_input_result_len);
1375                 switch (res) {
1376                 case 0:
1377                         if (sym_set_string_value(menu->sym,
1378                                                 dialog_input_result))
1379                                 return;
1380                         btn_dialog(main_window,
1381                                 _("You have made an invalid entry."), 0);
1382                         break;
1383                 case 1:
1384                         show_help(menu);
1385                         break;
1386                 case KEY_EXIT:
1387                         return;
1388                 }
1389         }
1390 }
1391
1392 static void conf_load(void)
1393 {
1394         while (1) {
1395                 int res;
1396                 res = dialog_inputbox(main_window,
1397                                 NULL, load_config_text,
1398                                 filename,
1399                                 &dialog_input_result,
1400                                 &dialog_input_result_len);
1401                 switch (res) {
1402                 case 0:
1403                         if (!dialog_input_result[0])
1404                                 return;
1405                         if (!conf_read(dialog_input_result)) {
1406                                 set_config_filename(dialog_input_result);
1407                                 sym_set_change_count(1);
1408                                 return;
1409                         }
1410                         btn_dialog(main_window, _("File does not exist!"), 0);
1411                         break;
1412                 case 1:
1413                         show_scroll_win(main_window,
1414                                         _("Load Alternate Configuration"),
1415                                         load_config_help);
1416                         break;
1417                 case KEY_EXIT:
1418                         return;
1419                 }
1420         }
1421 }
1422
1423 static void conf_save(void)
1424 {
1425         while (1) {
1426                 int res;
1427                 res = dialog_inputbox(main_window,
1428                                 NULL, save_config_text,
1429                                 filename,
1430                                 &dialog_input_result,
1431                                 &dialog_input_result_len);
1432                 switch (res) {
1433                 case 0:
1434                         if (!dialog_input_result[0])
1435                                 return;
1436                         res = conf_write(dialog_input_result);
1437                         if (!res) {
1438                                 set_config_filename(dialog_input_result);
1439                                 return;
1440                         }
1441                         btn_dialog(main_window, _("Can't create file! "
1442                                 "Probably a nonexistent directory."),
1443                                 1, "<OK>");
1444                         break;
1445                 case 1:
1446                         show_scroll_win(main_window,
1447                                 _("Save Alternate Configuration"),
1448                                 save_config_help);
1449                         break;
1450                 case KEY_EXIT:
1451                         return;
1452                 }
1453         }
1454 }
1455
1456 void setup_windows(void)
1457 {
1458         if (main_window != NULL)
1459                 delwin(main_window);
1460
1461         /* set up the menu and menu window */
1462         main_window = newwin(LINES-2, COLS-2, 2, 1);
1463         keypad(main_window, TRUE);
1464         mwin_max_lines = LINES-7;
1465         mwin_max_cols = COLS-6;
1466
1467         /* panels order is from bottom to top */
1468         new_panel(main_window);
1469 }
1470
1471 int main(int ac, char **av)
1472 {
1473         char *mode;
1474
1475         setlocale(LC_ALL, "");
1476         bindtextdomain(PACKAGE, LOCALEDIR);
1477         textdomain(PACKAGE);
1478
1479         conf_parse(av[1]);
1480         conf_read(NULL);
1481
1482         mode = getenv("NCONFIG_MODE");
1483         if (mode) {
1484                 if (!strcasecmp(mode, "single_menu"))
1485                         single_menu_mode = 1;
1486         }
1487
1488         /* Initialize curses */
1489         initscr();
1490         /* set color theme */
1491         set_colors();
1492
1493         cbreak();
1494         noecho();
1495         keypad(stdscr, TRUE);
1496         curs_set(0);
1497
1498         if (COLS < 75 || LINES < 20) {
1499                 endwin();
1500                 printf("Your terminal should have at "
1501                         "least 20 lines and 75 columns\n");
1502                 return 1;
1503         }
1504
1505         notimeout(stdscr, FALSE);
1506 #if NCURSES_REENTRANT
1507         set_escdelay(1);
1508 #else
1509         ESCDELAY = 1;
1510 #endif
1511
1512         /* set btns menu */
1513         curses_menu = new_menu(curses_menu_items);
1514         menu_opts_off(curses_menu, O_SHOWDESC);
1515         menu_opts_on(curses_menu, O_SHOWMATCH);
1516         menu_opts_on(curses_menu, O_ONEVALUE);
1517         menu_opts_on(curses_menu, O_NONCYCLIC);
1518         menu_opts_on(curses_menu, O_IGNORECASE);
1519         set_menu_mark(curses_menu, " ");
1520         set_menu_fore(curses_menu, attributes[MAIN_MENU_FORE]);
1521         set_menu_back(curses_menu, attributes[MAIN_MENU_BACK]);
1522         set_menu_grey(curses_menu, attributes[MAIN_MENU_GREY]);
1523
1524         set_config_filename(conf_get_configname());
1525         setup_windows();
1526
1527         /* check for KEY_FUNC(1) */
1528         if (has_key(KEY_F(1)) == FALSE) {
1529                 show_scroll_win(main_window,
1530                                 _("Instructions"),
1531                                 _(menu_no_f_instructions));
1532         }
1533
1534         conf_set_message_callback(conf_message_callback);
1535         /* do the work */
1536         while (!global_exit) {
1537                 conf(&rootmenu);
1538                 if (!global_exit && do_exit() == 0)
1539                         break;
1540         }
1541         /* ok, we are done */
1542         unpost_menu(curses_menu);
1543         free_menu(curses_menu);
1544         delwin(main_window);
1545         clear();
1546         refresh();
1547         endwin();
1548         return 0;
1549 }
1550