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 <ctype.h>
  12#include <errno.h>
  13#include <fcntl.h>
  14#include <limits.h>
  15#include <stdarg.h>
  16#include <stdlib.h>
  17#include <string.h>
  18#include <signal.h>
  19#include <unistd.h>
  20#include <locale.h>
  21
  22#include "lkc.h"
  23#include "lxdialog/dialog.h"
  24
  25static const char mconf_readme[] = N_(
  26"Overview\n"
  27"--------\n"
  28"This interface lets you select features and parameters for the build.\n"
  29"Features can either be built-in, modularized, or ignored. Parameters\n"
  30"must be entered in as decimal or hexadecimal numbers or text.\n"
  31"\n"
  32"Menu items beginning with following braces represent features that\n"
  33"  [ ] can be built in or removed\n"
  34"  < > can be built in, modularized or removed\n"
  35"  { } can be built in or modularized (selected by other feature)\n"
  36"  - - are selected by other feature,\n"
  37"while *, M or whitespace inside braces means to build in, build as\n"
  38"a module or to exclude the feature respectively.\n"
  39"\n"
  40"To change any of these features, highlight it with the cursor\n"
  41"keys and press <Y> to build it in, <M> to make it a module or\n"
  42"<N> to remove it.  You may also press the <Space Bar> to cycle\n"
  43"through the available options (i.e. Y->N->M->Y).\n"
  44"\n"
  45"Some additional keyboard hints:\n"
  46"\n"
  47"Menus\n"
  48"----------\n"
  49"o  Use the Up/Down arrow keys (cursor keys) to highlight the item you\n"
  50"   wish to change or the submenu you wish to select and press <Enter>.\n"
  51"   Submenus are designated by \"--->\", empty ones by \"----\".\n"
  52"\n"
  53"   Shortcut: Press the option's highlighted letter (hotkey).\n"
  54"             Pressing a hotkey more than once will sequence\n"
  55"             through all visible items which use that hotkey.\n"
  56"\n"
  57"   You may also use the <PAGE UP> and <PAGE DOWN> keys to scroll\n"
  58"   unseen options into view.\n"
  59"\n"
  60"o  To exit a menu use the cursor keys to highlight the <Exit> button\n"
  61"   and press <ENTER>.\n"
  62"\n"
  63"   Shortcut: Press <ESC><ESC> or <E> or <X> if there is no hotkey\n"
  64"             using those letters.  You may press a single <ESC>, but\n"
  65"             there is a delayed response which you may find annoying.\n"
  66"\n"
  67"   Also, the <TAB> and cursor keys will cycle between <Select>,\n"
  68"   <Exit>, <Help>, <Save>, and <Load>.\n"
  69"\n"
  70"o  To get help with an item, use the cursor keys to highlight <Help>\n"
  71"   and press <ENTER>.\n"
  72"\n"
  73"   Shortcut: Press <H> or <?>.\n"
  74"\n"
  75"o  To toggle the display of hidden options, press <Z>.\n"
  76"\n"
  77"\n"
  78"Radiolists  (Choice lists)\n"
  79"-----------\n"
  80"o  Use the cursor keys to select the option you wish to set and press\n"
  81"   <S> or the <SPACE BAR>.\n"
  82"\n"
  83"   Shortcut: Press the first letter of the option you wish to set then\n"
  84"             press <S> or <SPACE BAR>.\n"
  85"\n"
  86"o  To see available help for the item, use the cursor keys to highlight\n"
  87"   <Help> and Press <ENTER>.\n"
  88"\n"
  89"   Shortcut: Press <H> or <?>.\n"
  90"\n"
  91"   Also, the <TAB> and cursor keys will cycle between <Select> and\n"
  92"   <Help>\n"
  93"\n"
  94"\n"
  95"Data Entry\n"
  96"-----------\n"
  97"o  Enter the requested information and press <ENTER>\n"
  98"   If you are entering hexadecimal values, it is not necessary to\n"
  99"   add the '0x' prefix to the entry.\n"
 100"\n"
 101"o  For help, use the <TAB> or cursor keys to highlight the help option\n"
 102"   and press <ENTER>.  You can try <TAB><H> as well.\n"
 103"\n"
 104"\n"
 105"Text Box    (Help Window)\n"
 106"--------\n"
 107"o  Use the cursor keys to scroll up/down/left/right.  The VI editor\n"
 108"   keys h,j,k,l function here as do <u>, <d>, <SPACE BAR> and <B> for\n"
 109"   those who are familiar with less and lynx.\n"
 110"\n"
 111"o  Press <E>, <X>, <q>, <Enter> or <Esc><Esc> to exit.\n"
 112"\n"
 113"\n"
 114"Alternate Configuration Files\n"
 115"-----------------------------\n"
 116"Menuconfig supports the use of alternate configuration files for\n"
 117"those who, for various reasons, find it necessary to switch\n"
 118"between different configurations.\n"
 119"\n"
 120"The <Save> button will let you save the current configuration to\n"
 121"a file of your choosing.  Use the <Load> button to load a previously\n"
 122"saved alternate configuration.\n"
 123"\n"
 124"Even if you don't use alternate configuration files, but you find\n"
 125"during a Menuconfig session that you have completely messed up your\n"
 126"settings, you may use the <Load> button to restore your previously\n"
 127"saved settings from \".config\" without restarting Menuconfig.\n"
 128"\n"
 129"Other information\n"
 130"-----------------\n"
 131"If you use Menuconfig in an XTERM window, make sure you have your\n"
 132"$TERM variable set to point to an xterm definition which supports\n"
 133"color.  Otherwise, Menuconfig will look rather bad.  Menuconfig will\n"
 134"not display correctly in an RXVT window because rxvt displays only one\n"
 135"intensity of color, bright.\n"
 136"\n"
 137"Menuconfig will display larger menus on screens or xterms which are\n"
 138"set to display more than the standard 25 row by 80 column geometry.\n"
 139"In order for this to work, the \"stty size\" command must be able to\n"
 140"display the screen's current row and column geometry.  I STRONGLY\n"
 141"RECOMMEND that you make sure you do NOT have the shell variables\n"
 142"LINES and COLUMNS exported into your environment.  Some distributions\n"
 143"export those variables via /etc/profile.  Some ncurses programs can\n"
 144"become confused when those variables (LINES & COLUMNS) don't reflect\n"
 145"the true screen size.\n"
 146"\n"
 147"Optional personality available\n"
 148"------------------------------\n"
 149"If you prefer to have all of the options listed in a single menu,\n"
 150"rather than the default multimenu hierarchy, run the menuconfig with\n"
 151"MENUCONFIG_MODE environment variable set to single_menu. Example:\n"
 152"\n"
 153"make MENUCONFIG_MODE=single_menu menuconfig\n"
 154"\n"
 155"<Enter> will then unroll the appropriate category, or enfold it if it\n"
 156"is already unrolled.\n"
 157"\n"
 158"Note that this mode can eventually be a little more CPU expensive\n"
 159"(especially with a larger number of unrolled categories) than the\n"
 160"default mode.\n"
 161"\n"
 162"Different color themes available\n"
 163"--------------------------------\n"
 164"It is possible to select different color themes using the variable\n"
 165"MENUCONFIG_COLOR. To select a theme use:\n"
 166"\n"
 167"make MENUCONFIG_COLOR=<theme> menuconfig\n"
 168"\n"
 169"Available themes are\n"
 170" mono       => selects colors suitable for monochrome displays\n"
 171" blackbg    => selects a color scheme with black background\n"
 172" classic    => theme with blue background. The classic look\n"
 173" bluetitle  => an LCD friendly version of classic. (default)\n"
 174"\n"),
 175menu_instructions[] = N_(
 176	"Arrow keys navigate the menu.  "
 177	"<Enter> selects submenus ---> (or empty submenus ----).  "
 178	"Highlighted letters are hotkeys.  "
 179	"Pressing <Y> includes, <N> excludes, <M> modularizes features.  "
 180	"Press <Esc><Esc> to exit, <?> for Help, </> for Search.  "
 181	"Legend: [*] built-in  [ ] excluded  <M> module  < > module capable"),
 182radiolist_instructions[] = N_(
 183	"Use the arrow keys to navigate this window or "
 184	"press the hotkey of the item you wish to select "
 185	"followed by the <SPACE BAR>. "
 186	"Press <?> for additional information about this option."),
 187inputbox_instructions_int[] = N_(
 188	"Please enter a decimal value. "
 189	"Fractions will not be accepted.  "
 190	"Use the <TAB> key to move from the input field to the buttons below it."),
 191inputbox_instructions_hex[] = N_(
 192	"Please enter a hexadecimal value. "
 193	"Use the <TAB> key to move from the input field to the buttons below it."),
 194inputbox_instructions_string[] = N_(
 195	"Please enter a string value. "
 196	"Use the <TAB> key to move from the input field to the buttons below it."),
 197setmod_text[] = N_(
 198	"This feature depends on another which has been configured as a module.\n"
 199	"As a result, this feature will be built as a module."),
 200load_config_text[] = N_(
 201	"Enter the name of the configuration file you wish to load.  "
 202	"Accept the name shown to restore the configuration you "
 203	"last retrieved.  Leave blank to abort."),
 204load_config_help[] = N_(
 205	"\n"
 206	"For various reasons, one may wish to keep several different\n"
 207	"configurations available on a single machine.\n"
 208	"\n"
 209	"If you have saved a previous configuration in a file other than the\n"
 210	"default one, entering its name here will allow you to modify that\n"
 211	"configuration.\n"
 212	"\n"
 213	"If you are uncertain, then you have probably never used alternate\n"
 214	"configuration files. You should therefore leave this blank to abort.\n"),
 215save_config_text[] = N_(
 216	"Enter a filename to which this configuration should be saved "
 217	"as an alternate.  Leave blank to abort."),
 218save_config_help[] = N_(
 219	"\n"
 220	"For various reasons, one may wish to keep different configurations\n"
 221	"available on a single machine.\n"
 222	"\n"
 223	"Entering a file name here will allow you to later retrieve, modify\n"
 224	"and use the current configuration as an alternate to whatever\n"
 225	"configuration options you have selected at that time.\n"
 226	"\n"
 227	"If you are uncertain what all this means then you should probably\n"
 228	"leave this blank.\n"),
 229search_help[] = N_(
 230	"\n"
 231	"Search for symbols and display their relations.\n"
 232	"Regular expressions are allowed.\n"
 233	"Example: search for \"^FOO\"\n"
 234	"Result:\n"
 235	"-----------------------------------------------------------------\n"
 236	"Symbol: FOO [=m]\n"
 237	"Type  : tristate\n"
 238	"Prompt: Foo bus is used to drive the bar HW\n"
 239	"  Location:\n"
 240	"    -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
 241	"      -> PCI support (PCI [=y])\n"
 242	"(1)     -> PCI access mode (<choice> [=y])\n"
 243	"  Defined at drivers/pci/Kconfig:47\n"
 244	"  Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
 245	"  Selects: LIBCRC32\n"
 246	"  Selected by: BAR [=n]\n"
 247	"-----------------------------------------------------------------\n"
 248	"o The line 'Type:' shows the type of the configuration option for\n"
 249	"  this symbol (boolean, tristate, string, ...)\n"
 250	"o The line 'Prompt:' shows the text used in the menu structure for\n"
 251	"  this symbol\n"
 252	"o The 'Defined at' line tells at what file / line number the symbol\n"
 253	"  is defined\n"
 254	"o The 'Depends on:' line tells what symbols need to be defined for\n"
 255	"  this symbol to be visible in the menu (selectable)\n"
 256	"o The 'Location:' lines tells where in the menu structure this symbol\n"
 257	"  is located\n"
 258	"    A location followed by a [=y] indicates that this is a\n"
 259	"    selectable menu item - and the current value is displayed inside\n"
 260	"    brackets.\n"
 261	"    Press the key in the (#) prefix to jump directly to that\n"
 262	"    location. You will be returned to the current search results\n"
 263	"    after exiting this new menu.\n"
 264	"o The 'Selects:' line tells what symbols will be automatically\n"
 265	"  selected if this symbol is selected (y or m)\n"
 266	"o The 'Selected by' line tells 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 symbols containing USB\n"
 272	"          ^USB => find all symbols starting with USB\n"
 273	"          USB$ => find all symbols ending with USB\n"
 274	"\n");
 275
 276static int indent;
 277static struct menu *current_menu;
 278static int child_count;
 279static int single_menu_mode;
 280static int show_all_options;
 281static int save_and_exit;
 282static int silent;
 283
 284static void conf(struct menu *menu, struct menu *active_menu);
 285static void conf_choice(struct menu *menu);
 286static void conf_string(struct menu *menu);
 287static void conf_load(void);
 288static void conf_save(void);
 289static int show_textbox_ext(const char *title, char *text, int r, int c,
 290			    int *keys, int *vscroll, int *hscroll,
 291			    update_text_fn update_text, void *data);
 292static void show_textbox(const char *title, const char *text, int r, int c);
 293static void show_helptext(const char *title, const char *text);
 294static void show_help(struct menu *menu);
 295
 296static char filename[PATH_MAX+1];
 297static void set_config_filename(const char *config_filename)
 298{
 299	static char menu_backtitle[PATH_MAX+128];
 300	int size;
 301
 302	size = snprintf(menu_backtitle, sizeof(menu_backtitle),
 303			"%s - %s", config_filename, rootmenu.prompt->text);
 304	if (size >= sizeof(menu_backtitle))
 305		menu_backtitle[sizeof(menu_backtitle)-1] = '\0';
 306	set_dialog_backtitle(menu_backtitle);
 307
 308	size = snprintf(filename, sizeof(filename), "%s", config_filename);
 309	if (size >= sizeof(filename))
 310		filename[sizeof(filename)-1] = '\0';
 311}
 312
 313struct subtitle_part {
 314	struct list_head entries;
 315	const char *text;
 316};
 317static LIST_HEAD(trail);
 318
 319static struct subtitle_list *subtitles;
 320static void set_subtitle(void)
 321{
 322	struct subtitle_part *sp;
 323	struct subtitle_list *pos, *tmp;
 324
 325	for (pos = subtitles; pos != NULL; pos = tmp) {
 326		tmp = pos->next;
 327		free(pos);
 328	}
 329
 330	subtitles = NULL;
 331	list_for_each_entry(sp, &trail, entries) {
 332		if (sp->text) {
 333			if (pos) {
 334				pos->next = xcalloc(1, sizeof(*pos));
 335				pos = pos->next;
 336			} else {
 337				subtitles = pos = xcalloc(1, sizeof(*pos));
 338			}
 339			pos->text = sp->text;
 340		}
 341	}
 342
 343	set_dialog_subtitles(subtitles);
 344}
 345
 346static void reset_subtitle(void)
 347{
 348	struct subtitle_list *pos, *tmp;
 349
 350	for (pos = subtitles; pos != NULL; pos = tmp) {
 351		tmp = pos->next;
 352		free(pos);
 353	}
 354	subtitles = NULL;
 355	set_dialog_subtitles(subtitles);
 356}
 357
 358struct search_data {
 359	struct list_head *head;
 360	struct menu **targets;
 361	int *keys;
 362};
 363
 364static void update_text(char *buf, size_t start, size_t end, void *_data)
 365{
 366	struct search_data *data = _data;
 367	struct jump_key *pos;
 368	int k = 0;
 369
 370	list_for_each_entry(pos, data->head, entries) {
 371		if (pos->offset >= start && pos->offset < end) {
 372			char header[4];
 373
 374			if (k < JUMP_NB) {
 375				int key = '0' + (pos->index % JUMP_NB) + 1;
 376
 377				sprintf(header, "(%c)", key);
 378				data->keys[k] = key;
 379				data->targets[k] = pos->target;
 380				k++;
 381			} else {
 382				sprintf(header, "   ");
 383			}
 384
 385			memcpy(buf + pos->offset, header, sizeof(header) - 1);
 386		}
 387	}
 388	data->keys[k] = 0;
 389}
 390
 391static void search_conf(void)
 392{
 393	struct symbol **sym_arr;
 394	struct gstr res;
 395	struct gstr title;
 396	char *dialog_input;
 397	int dres, vscroll = 0, hscroll = 0;
 398	bool again;
 399	struct gstr sttext;
 400	struct subtitle_part stpart;
 401
 402	title = str_new();
 403	str_printf( &title, _("Enter (sub)string or regexp to search for "
 404			      "(with or without \"%s\")"), CONFIG_);
 405
 406again:
 407	dialog_clear();
 408	dres = dialog_inputbox(_("Search Configuration Parameter"),
 409			      str_get(&title),
 410			      10, 75, "");
 411	switch (dres) {
 412	case 0:
 413		break;
 414	case 1:
 415		show_helptext(_("Search Configuration"), search_help);
 416		goto again;
 417	default:
 418		str_free(&title);
 419		return;
 420	}
 421
 422	/* strip the prefix if necessary */
 423	dialog_input = dialog_input_result;
 424	if (strncasecmp(dialog_input_result, CONFIG_, strlen(CONFIG_)) == 0)
 425		dialog_input += strlen(CONFIG_);
 426
 427	sttext = str_new();
 428	str_printf(&sttext, "Search (%s)", dialog_input_result);
 429	stpart.text = str_get(&sttext);
 430	list_add_tail(&stpart.entries, &trail);
 431
 432	sym_arr = sym_re_search(dialog_input);
 433	do {
 434		LIST_HEAD(head);
 435		struct menu *targets[JUMP_NB];
 436		int keys[JUMP_NB + 1], i;
 437		struct search_data data = {
 438			.head = &head,
 439			.targets = targets,
 440			.keys = keys,
 441		};
 442		struct jump_key *pos, *tmp;
 443
 444		res = get_relations_str(sym_arr, &head);
 445		set_subtitle();
 446		dres = show_textbox_ext(_("Search Results"), (char *)
 447					str_get(&res), 0, 0, keys, &vscroll,
 448					&hscroll, &update_text, (void *)
 449					&data);
 450		again = false;
 451		for (i = 0; i < JUMP_NB && keys[i]; i++)
 452			if (dres == keys[i]) {
 453				conf(targets[i]->parent, targets[i]);
 454				again = true;
 455			}
 456		str_free(&res);
 457		list_for_each_entry_safe(pos, tmp, &head, entries)
 458			free(pos);
 459	} while (again);
 460	free(sym_arr);
 461	str_free(&title);
 462	list_del(trail.prev);
 463	str_free(&sttext);
 464}
 465
 466static void build_conf(struct menu *menu)
 467{
 468	struct symbol *sym;
 469	struct property *prop;
 470	struct menu *child;
 471	int type, tmp, doint = 2;
 472	tristate val;
 473	char ch;
 474	bool visible;
 475
 476	/*
 477	 * note: menu_is_visible() has side effect that it will
 478	 * recalc the value of the symbol.
 479	 */
 480	visible = menu_is_visible(menu);
 481	if (show_all_options && !menu_has_prompt(menu))
 482		return;
 483	else if (!show_all_options && !visible)
 484		return;
 485
 486	sym = menu->sym;
 487	prop = menu->prompt;
 488	if (!sym) {
 489		if (prop && menu != current_menu) {
 490			const char *prompt = menu_get_prompt(menu);
 491			switch (prop->type) {
 492			case P_MENU:
 493				child_count++;
 494				prompt = _(prompt);
 495				if (single_menu_mode) {
 496					item_make("%s%*c%s",
 497						  menu->data ? "-->" : "++>",
 498						  indent + 1, ' ', prompt);
 499				} else
 500					item_make("   %*c%s  %s",
 501						  indent + 1, ' ', prompt,
 502						  menu_is_empty(menu) ? "----" : "--->");
 503				item_set_tag('m');
 504				item_set_data(menu);
 505				if (single_menu_mode && menu->data)
 506					goto conf_childs;
 507				return;
 508			case P_COMMENT:
 509				if (prompt) {
 510					child_count++;
 511					item_make("   %*c*** %s ***", indent + 1, ' ', _(prompt));
 512					item_set_tag(':');
 513					item_set_data(menu);
 514				}
 515				break;
 516			default:
 517				if (prompt) {
 518					child_count++;
 519					item_make("---%*c%s", indent + 1, ' ', _(prompt));
 520					item_set_tag(':');
 521					item_set_data(menu);
 522				}
 523			}
 524		} else
 525			doint = 0;
 526		goto conf_childs;
 527	}
 528
 529	type = sym_get_type(sym);
 530	if (sym_is_choice(sym)) {
 531		struct symbol *def_sym = sym_get_choice_value(sym);
 532		struct menu *def_menu = NULL;
 533
 534		child_count++;
 535		for (child = menu->list; child; child = child->next) {
 536			if (menu_is_visible(child) && child->sym == def_sym)
 537				def_menu = child;
 538		}
 539
 540		val = sym_get_tristate_value(sym);
 541		if (sym_is_changable(sym)) {
 542			switch (type) {
 543			case S_BOOLEAN:
 544				item_make("[%c]", val == no ? ' ' : '*');
 545				break;
 546			case S_TRISTATE:
 547				switch (val) {
 548				case yes: ch = '*'; break;
 549				case mod: ch = 'M'; break;
 550				default:  ch = ' '; break;
 551				}
 552				item_make("<%c>", ch);
 553				break;
 554			}
 555			item_set_tag('t');
 556			item_set_data(menu);
 557		} else {
 558			item_make("   ");
 559			item_set_tag(def_menu ? 't' : ':');
 560			item_set_data(menu);
 561		}
 562
 563		item_add_str("%*c%s", indent + 1, ' ', _(menu_get_prompt(menu)));
 564		if (val == yes) {
 565			if (def_menu) {
 566				item_add_str(" (%s)", _(menu_get_prompt(def_menu)));
 567				item_add_str("  --->");
 568				if (def_menu->list) {
 569					indent += 2;
 570					build_conf(def_menu);
 571					indent -= 2;
 572				}
 573			}
 574			return;
 575		}
 576	} else {
 577		if (menu == current_menu) {
 578			item_make("---%*c%s", indent + 1, ' ', _(menu_get_prompt(menu)));
 579			item_set_tag(':');
 580			item_set_data(menu);
 581			goto conf_childs;
 582		}
 583		child_count++;
 584		val = sym_get_tristate_value(sym);
 585		if (sym_is_choice_value(sym) && val == yes) {
 586			item_make("   ");
 587			item_set_tag(':');
 588			item_set_data(menu);
 589		} else {
 590			switch (type) {
 591			case S_BOOLEAN:
 592				if (sym_is_changable(sym))
 593					item_make("[%c]", val == no ? ' ' : '*');
 594				else
 595					item_make("-%c-", val == no ? ' ' : '*');
 596				item_set_tag('t');
 597				item_set_data(menu);
 598				break;
 599			case S_TRISTATE:
 600				switch (val) {
 601				case yes: ch = '*'; break;
 602				case mod: ch = 'M'; break;
 603				default:  ch = ' '; break;
 604				}
 605				if (sym_is_changable(sym)) {
 606					if (sym->rev_dep.tri == mod)
 607						item_make("{%c}", ch);
 608					else
 609						item_make("<%c>", ch);
 610				} else
 611					item_make("-%c-", ch);
 612				item_set_tag('t');
 613				item_set_data(menu);
 614				break;
 615			default:
 616				tmp = 2 + strlen(sym_get_string_value(sym)); /* () = 2 */
 617				item_make("(%s)", sym_get_string_value(sym));
 618				tmp = indent - tmp + 4;
 619				if (tmp < 0)
 620					tmp = 0;
 621				item_add_str("%*c%s%s", tmp, ' ', _(menu_get_prompt(menu)),
 622					     (sym_has_value(sym) || !sym_is_changable(sym)) ?
 623					     "" : _(" (NEW)"));
 624				item_set_tag('s');
 625				item_set_data(menu);
 626				goto conf_childs;
 627			}
 628		}
 629		item_add_str("%*c%s%s", indent + 1, ' ', _(menu_get_prompt(menu)),
 630			  (sym_has_value(sym) || !sym_is_changable(sym)) ?
 631			  "" : _(" (NEW)"));
 632		if (menu->prompt->type == P_MENU) {
 633			item_add_str("  %s", menu_is_empty(menu) ? "----" : "--->");
 634			return;
 635		}
 636	}
 637
 638conf_childs:
 639	indent += doint;
 640	for (child = menu->list; child; child = child->next)
 641		build_conf(child);
 642	indent -= doint;
 643}
 644
 645static void conf(struct menu *menu, struct menu *active_menu)
 646{
 647	struct menu *submenu;
 648	const char *prompt = menu_get_prompt(menu);
 649	struct subtitle_part stpart;
 650	struct symbol *sym;
 651	int res;
 652	int s_scroll = 0;
 653
 654	if (menu != &rootmenu)
 655		stpart.text = menu_get_prompt(menu);
 656	else
 657		stpart.text = NULL;
 658	list_add_tail(&stpart.entries, &trail);
 659
 660	while (1) {
 661		item_reset();
 662		current_menu = menu;
 663		build_conf(menu);
 664		if (!child_count)
 665			break;
 666		set_subtitle();
 667		dialog_clear();
 668		res = dialog_menu(prompt ? _(prompt) : _("Main Menu"),
 669				  _(menu_instructions),
 670				  active_menu, &s_scroll);
 671		if (res == 1 || res == KEY_ESC || res == -ERRDISPLAYTOOSMALL)
 672			break;
 673		if (item_count() != 0) {
 674			if (!item_activate_selected())
 675				continue;
 676			if (!item_tag())
 677				continue;
 678		}
 679		submenu = item_data();
 680		active_menu = item_data();
 681		if (submenu)
 682			sym = submenu->sym;
 683		else
 684			sym = NULL;
 685
 686		switch (res) {
 687		case 0:
 688			switch (item_tag()) {
 689			case 'm':
 690				if (single_menu_mode)
 691					submenu->data = (void *) (long) !submenu->data;
 692				else
 693					conf(submenu, NULL);
 694				break;
 695			case 't':
 696				if (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)
 697					conf_choice(submenu);
 698				else if (submenu->prompt->type == P_MENU)
 699					conf(submenu, NULL);
 700				break;
 701			case 's':
 702				conf_string(submenu);
 703				break;
 704			}
 705			break;
 706		case 2:
 707			if (sym)
 708				show_help(submenu);
 709			else {
 710				reset_subtitle();
 711				show_helptext(_("README"), _(mconf_readme));
 712			}
 713			break;
 714		case 3:
 715			reset_subtitle();
 716			conf_save();
 717			break;
 718		case 4:
 719			reset_subtitle();
 720			conf_load();
 721			break;
 722		case 5:
 723			if (item_is_tag('t')) {
 724				if (sym_set_tristate_value(sym, yes))
 725					break;
 726				if (sym_set_tristate_value(sym, mod))
 727					show_textbox(NULL, setmod_text, 6, 74);
 728			}
 729			break;
 730		case 6:
 731			if (item_is_tag('t'))
 732				sym_set_tristate_value(sym, no);
 733			break;
 734		case 7:
 735			if (item_is_tag('t'))
 736				sym_set_tristate_value(sym, mod);
 737			break;
 738		case 8:
 739			if (item_is_tag('t'))
 740				sym_toggle_tristate_value(sym);
 741			else if (item_is_tag('m'))
 742				conf(submenu, NULL);
 743			break;
 744		case 9:
 745			search_conf();
 746			break;
 747		case 10:
 748			show_all_options = !show_all_options;
 749			break;
 750		}
 751	}
 752
 753	list_del(trail.prev);
 754}
 755
 756static int show_textbox_ext(const char *title, char *text, int r, int c, int
 757			    *keys, int *vscroll, int *hscroll, update_text_fn
 758			    update_text, void *data)
 759{
 760	dialog_clear();
 761	return dialog_textbox(title, text, r, c, keys, vscroll, hscroll,
 762			      update_text, data);
 763}
 764
 765static void show_textbox(const char *title, const char *text, int r, int c)
 766{
 767	show_textbox_ext(title, (char *) text, r, c, (int []) {0}, NULL, NULL,
 768			 NULL, NULL);
 769}
 770
 771static void show_helptext(const char *title, const char *text)
 772{
 773	show_textbox(title, text, 0, 0);
 774}
 775
 776static void conf_message_callback(const char *fmt, va_list ap)
 777{
 778	char buf[PATH_MAX+1];
 779
 780	vsnprintf(buf, sizeof(buf), fmt, ap);
 781	if (save_and_exit) {
 782		if (!silent)
 783			printf("%s", buf);
 784	} else {
 785		show_textbox(NULL, buf, 6, 60);
 786	}
 787}
 788
 789static void show_help(struct menu *menu)
 790{
 791	struct gstr help = str_new();
 792
 793	help.max_width = getmaxx(stdscr) - 10;
 794	menu_get_ext_help(menu, &help);
 795
 796	show_helptext(_(menu_get_prompt(menu)), str_get(&help));
 797	str_free(&help);
 798}
 799
 800static void conf_choice(struct menu *menu)
 801{
 802	const char *prompt = _(menu_get_prompt(menu));
 803	struct menu *child;
 804	struct symbol *active;
 805
 806	active = sym_get_choice_value(menu->sym);
 807	while (1) {
 808		int res;
 809		int selected;
 810		item_reset();
 811
 812		current_menu = menu;
 813		for (child = menu->list; child; child = child->next) {
 814			if (!menu_is_visible(child))
 815				continue;
 816			if (child->sym)
 817				item_make("%s", _(menu_get_prompt(child)));
 818			else {
 819				item_make("*** %s ***", _(menu_get_prompt(child)));
 820				item_set_tag(':');
 821			}
 822			item_set_data(child);
 823			if (child->sym == active)
 824				item_set_selected(1);
 825			if (child->sym == sym_get_choice_value(menu->sym))
 826				item_set_tag('X');
 827		}
 828		dialog_clear();
 829		res = dialog_checklist(prompt ? _(prompt) : _("Main Menu"),
 830					_(radiolist_instructions),
 831					MENUBOX_HEIGTH_MIN,
 832					MENUBOX_WIDTH_MIN,
 833					CHECKLIST_HEIGTH_MIN);
 834		selected = item_activate_selected();
 835		switch (res) {
 836		case 0:
 837			if (selected) {
 838				child = item_data();
 839				if (!child->sym)
 840					break;
 841
 842				sym_set_tristate_value(child->sym, yes);
 843			}
 844			return;
 845		case 1:
 846			if (selected) {
 847				child = item_data();
 848				show_help(child);
 849				active = child->sym;
 850			} else
 851				show_help(menu);
 852			break;
 853		case KEY_ESC:
 854			return;
 855		case -ERRDISPLAYTOOSMALL:
 856			return;
 857		}
 858	}
 859}
 860
 861static void conf_string(struct menu *menu)
 862{
 863	const char *prompt = menu_get_prompt(menu);
 864
 865	while (1) {
 866		int res;
 867		const char *heading;
 868
 869		switch (sym_get_type(menu->sym)) {
 870		case S_INT:
 871			heading = _(inputbox_instructions_int);
 872			break;
 873		case S_HEX:
 874			heading = _(inputbox_instructions_hex);
 875			break;
 876		case S_STRING:
 877			heading = _(inputbox_instructions_string);
 878			break;
 879		default:
 880			heading = _("Internal mconf error!");
 881		}
 882		dialog_clear();
 883		res = dialog_inputbox(prompt ? _(prompt) : _("Main Menu"),
 884				      heading, 10, 75,
 885				      sym_get_string_value(menu->sym));
 886		switch (res) {
 887		case 0:
 888			if (sym_set_string_value(menu->sym, dialog_input_result))
 889				return;
 890			show_textbox(NULL, _("You have made an invalid entry."), 5, 43);
 891			break;
 892		case 1:
 893			show_help(menu);
 894			break;
 895		case KEY_ESC:
 896			return;
 897		}
 898	}
 899}
 900
 901static void conf_load(void)
 902{
 903
 904	while (1) {
 905		int res;
 906		dialog_clear();
 907		res = dialog_inputbox(NULL, load_config_text,
 908				      11, 55, filename);
 909		switch(res) {
 910		case 0:
 911			if (!dialog_input_result[0])
 912				return;
 913			if (!conf_read(dialog_input_result)) {
 914				set_config_filename(dialog_input_result);
 915				sym_set_change_count(1);
 916				return;
 917			}
 918			show_textbox(NULL, _("File does not exist!"), 5, 38);
 919			break;
 920		case 1:
 921			show_helptext(_("Load Alternate Configuration"), load_config_help);
 922			break;
 923		case KEY_ESC:
 924			return;
 925		}
 926	}
 927}
 928
 929static void conf_save(void)
 930{
 931	while (1) {
 932		int res;
 933		dialog_clear();
 934		res = dialog_inputbox(NULL, save_config_text,
 935				      11, 55, filename);
 936		switch(res) {
 937		case 0:
 938			if (!dialog_input_result[0])
 939				return;
 940			if (!conf_write(dialog_input_result)) {
 941				set_config_filename(dialog_input_result);
 942				return;
 943			}
 944			show_textbox(NULL, _("Can't create file!  Probably a nonexistent directory."), 5, 60);
 945			break;
 946		case 1:
 947			show_helptext(_("Save Alternate Configuration"), save_config_help);
 948			break;
 949		case KEY_ESC:
 950			return;
 951		}
 952	}
 953}
 954
 955static int handle_exit(void)
 956{
 957	int res;
 958
 959	save_and_exit = 1;
 960	reset_subtitle();
 961	dialog_clear();
 962	if (conf_get_changed())
 963		res = dialog_yesno(NULL,
 964				   _("Do you wish to save your new configuration?\n"
 965				     "(Press <ESC><ESC> to continue kernel configuration.)"),
 966				   6, 60);
 967	else
 968		res = -1;
 969
 970	end_dialog(saved_x, saved_y);
 971
 972	switch (res) {
 973	case 0:
 974		if (conf_write(filename)) {
 975			fprintf(stderr, _("\n\n"
 976					  "Error while writing of the configuration.\n"
 977					  "Your configuration changes were NOT saved."
 978					  "\n\n"));
 979			return 1;
 980		}
 981		/* fall through */
 982	case -1:
 983		if (!silent)
 984			printf(_("\n\n"
 985				 "*** End of the configuration.\n"
 986				 "*** Execute 'make' to start the build or try 'make help'."
 987				 "\n\n"));
 988		res = 0;
 989		break;
 990	default:
 991		if (!silent)
 992			fprintf(stderr, _("\n\n"
 993					  "Your configuration changes were NOT saved."
 994					  "\n\n"));
 995		if (res != KEY_ESC)
 996			res = 0;
 997	}
 998
 999	return res;
1000}
1001
1002static void sig_handler(int signo)
1003{
1004	exit(handle_exit());
1005}
1006
1007int main(int ac, char **av)
1008{
1009	char *mode;
1010	int res;
1011
1012	setlocale(LC_ALL, "");
1013	bindtextdomain(PACKAGE, LOCALEDIR);
1014	textdomain(PACKAGE);
1015
1016	signal(SIGINT, sig_handler);
1017
1018	if (ac > 1 && strcmp(av[1], "-s") == 0) {
1019		silent = 1;
1020		/* Silence conf_read() until the real callback is set up */
1021		conf_set_message_callback(NULL);
1022		av++;
1023	}
1024	conf_parse(av[1]);
1025	conf_read(NULL);
1026
1027	mode = getenv("MENUCONFIG_MODE");
1028	if (mode) {
1029		if (!strcasecmp(mode, "single_menu"))
1030			single_menu_mode = 1;
1031	}
1032
1033	if (init_dialog(NULL)) {
1034		fprintf(stderr, N_("Your display is too small to run Menuconfig!\n"));
1035		fprintf(stderr, N_("It must be at least 19 lines by 80 columns.\n"));
1036		return 1;
1037	}
1038
1039	set_config_filename(conf_get_configname());
1040	conf_set_message_callback(conf_message_callback);
1041	do {
1042		conf(&rootmenu, NULL);
1043		res = handle_exit();
1044	} while (res == KEY_ESC);
1045
1046	return res;
1047}