scripts/kconfig/lxdialog/util.c

   1 /*
   2  *  util.c
   3  *
   4  *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
   5  *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
   6  *
   7  *  This program is free software; you can redistribute it and/or
   8  *  modify it under the terms of the GNU General Public License
   9  *  as published by the Free Software Foundation; either version 2
  10  *  of the License, or (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include "dialog.h"
  23
  24 struct dialog_info dlg;
  25
  26 static void set_mono_theme(void)
  27 {
  28         dlg.screen.atr = A_NORMAL;
  29         dlg.shadow.atr = A_NORMAL;
  30         dlg.dialog.atr = A_NORMAL;
  31         dlg.title.atr = A_BOLD;
  32         dlg.border.atr = A_NORMAL;
  33         dlg.button_active.atr = A_REVERSE;
  34         dlg.button_inactive.atr = A_DIM;
  35         dlg.button_key_active.atr = A_REVERSE;
  36         dlg.button_key_inactive.atr = A_BOLD;
  37         dlg.button_label_active.atr = A_REVERSE;
  38         dlg.button_label_inactive.atr = A_NORMAL;
  39         dlg.inputbox.atr = A_NORMAL;
  40         dlg.inputbox_border.atr = A_NORMAL;
  41         dlg.searchbox.atr = A_NORMAL;
  42         dlg.searchbox_title.atr = A_BOLD;
  43         dlg.searchbox_border.atr = A_NORMAL;
  44         dlg.position_indicator.atr = A_BOLD;
  45         dlg.menubox.atr = A_NORMAL;
  46         dlg.menubox_border.atr = A_NORMAL;
  47         dlg.item.atr = A_NORMAL;
  48         dlg.item_selected.atr = A_REVERSE;
  49         dlg.tag.atr = A_BOLD;
  50         dlg.tag_selected.atr = A_REVERSE;
  51         dlg.tag_key.atr = A_BOLD;
  52         dlg.tag_key_selected.atr = A_REVERSE;
  53         dlg.check.atr = A_BOLD;
  54         dlg.check_selected.atr = A_REVERSE;
  55         dlg.uarrow.atr = A_BOLD;
  56         dlg.darrow.atr = A_BOLD;
  57 }
  58
  59 #define DLG_COLOR(dialog, f, b, h) \
  60 do {                               \
  61         dlg.dialog.fg = (f);       \
  62         dlg.dialog.bg = (b);       \
  63         dlg.dialog.hl = (h);       \
  64 } while (0)
  65
  66 static void set_classic_theme(void)
  67 {
  68         DLG_COLOR(screen,                COLOR_CYAN,   COLOR_BLUE,   true);
  69         DLG_COLOR(shadow,                COLOR_BLACK,  COLOR_BLACK,  true);
  70         DLG_COLOR(dialog,                COLOR_BLACK,  COLOR_WHITE,  false);
  71         DLG_COLOR(title,                 COLOR_YELLOW, COLOR_WHITE,  true);
  72         DLG_COLOR(border,                COLOR_WHITE,  COLOR_WHITE,  true);
  73         DLG_COLOR(button_active,         COLOR_WHITE,  COLOR_BLUE,   true);
  74         DLG_COLOR(button_inactive,       COLOR_BLACK,  COLOR_WHITE,  false);
  75         DLG_COLOR(button_key_active,     COLOR_WHITE,  COLOR_BLUE,   true);
  76         DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_WHITE,  false);
  77         DLG_COLOR(button_label_active,   COLOR_YELLOW, COLOR_BLUE,   true);
  78         DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_WHITE,  true);
  79         DLG_COLOR(inputbox,              COLOR_BLACK,  COLOR_WHITE,  false);
  80         DLG_COLOR(inputbox_border,       COLOR_BLACK,  COLOR_WHITE,  false);
  81         DLG_COLOR(searchbox,             COLOR_BLACK,  COLOR_WHITE,  false);
  82         DLG_COLOR(searchbox_title,       COLOR_YELLOW, COLOR_WHITE,  true);
  83         DLG_COLOR(searchbox_border,      COLOR_WHITE,  COLOR_WHITE,  true);
  84         DLG_COLOR(position_indicator,    COLOR_YELLOW, COLOR_WHITE,  true);
  85         DLG_COLOR(menubox,               COLOR_BLACK,  COLOR_WHITE,  false);
  86         DLG_COLOR(menubox_border,        COLOR_WHITE,  COLOR_WHITE,  true);
  87         DLG_COLOR(item,                  COLOR_BLACK,  COLOR_WHITE,  false);
  88         DLG_COLOR(item_selected,         COLOR_WHITE,  COLOR_BLUE,   true);
  89         DLG_COLOR(tag,                   COLOR_YELLOW, COLOR_WHITE,  true);
  90         DLG_COLOR(tag_selected,          COLOR_YELLOW, COLOR_BLUE,   true);
  91         DLG_COLOR(tag_key,               COLOR_YELLOW, COLOR_WHITE,  true);
  92         DLG_COLOR(tag_key_selected,      COLOR_YELLOW, COLOR_BLUE,   true);
  93         DLG_COLOR(check,                 COLOR_BLACK,  COLOR_WHITE,  false);
  94         DLG_COLOR(check_selected,        COLOR_WHITE,  COLOR_BLUE,   true);
  95         DLG_COLOR(uarrow,                COLOR_GREEN,  COLOR_WHITE,  true);
  96         DLG_COLOR(darrow,                COLOR_GREEN,  COLOR_WHITE,  true);
  97 }
  98
  99 static void set_blackbg_theme(void)
 100 {
 101         DLG_COLOR(screen, COLOR_RED,   COLOR_BLACK, true);
 102         DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false);
 103         DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false);
 104         DLG_COLOR(title,  COLOR_RED,   COLOR_BLACK, false);
 105         DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true);
 106
 107         DLG_COLOR(button_active,         COLOR_YELLOW, COLOR_RED,   false);
 108         DLG_COLOR(button_inactive,       COLOR_YELLOW, COLOR_BLACK, false);
 109         DLG_COLOR(button_key_active,     COLOR_YELLOW, COLOR_RED,   true);
 110         DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_BLACK, false);
 111         DLG_COLOR(button_label_active,   COLOR_WHITE,  COLOR_RED,   false);
 112         DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_BLACK, true);
 113
 114         DLG_COLOR(inputbox,         COLOR_YELLOW, COLOR_BLACK, false);
 115         DLG_COLOR(inputbox_border,  COLOR_YELLOW, COLOR_BLACK, false);
 116
 117         DLG_COLOR(searchbox,        COLOR_YELLOW, COLOR_BLACK, false);
 118         DLG_COLOR(searchbox_title,  COLOR_YELLOW, COLOR_BLACK, true);
 119         DLG_COLOR(searchbox_border, COLOR_BLACK,  COLOR_BLACK, true);
 120
 121         DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK,  false);
 122
 123         DLG_COLOR(menubox,          COLOR_YELLOW, COLOR_BLACK, false);
 124         DLG_COLOR(menubox_border,   COLOR_BLACK,  COLOR_BLACK, true);
 125
 126         DLG_COLOR(item,             COLOR_WHITE, COLOR_BLACK, false);
 127         DLG_COLOR(item_selected,    COLOR_WHITE, COLOR_RED,   false);
 128
 129         DLG_COLOR(tag,              COLOR_RED,    COLOR_BLACK, false);
 130         DLG_COLOR(tag_selected,     COLOR_YELLOW, COLOR_RED,   true);
 131         DLG_COLOR(tag_key,          COLOR_RED,    COLOR_BLACK, false);
 132         DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED,   true);
 133
 134         DLG_COLOR(check,            COLOR_YELLOW, COLOR_BLACK, false);
 135         DLG_COLOR(check_selected,   COLOR_YELLOW, COLOR_RED,   true);
 136
 137         DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false);
 138         DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false);
 139 }
 140
 141 static void set_bluetitle_theme(void)
 142 {
 143         set_classic_theme();
 144         DLG_COLOR(title,               COLOR_BLUE,   COLOR_WHITE, true);
 145         DLG_COLOR(button_key_active,   COLOR_YELLOW, COLOR_BLUE,  true);
 146         DLG_COLOR(button_label_active, COLOR_WHITE,  COLOR_BLUE,  true);
 147         DLG_COLOR(searchbox_title,     COLOR_BLUE,   COLOR_WHITE, true);
 148         DLG_COLOR(position_indicator,  COLOR_BLUE,   COLOR_WHITE, true);
 149         DLG_COLOR(tag,                 COLOR_BLUE,   COLOR_WHITE, true);
 150         DLG_COLOR(tag_key,             COLOR_BLUE,   COLOR_WHITE, true);
 151
 152 }
 153
 154 /*
 155  * Select color theme
 156  */
 157 static int set_theme(const char *theme)
 158 {
 159         int use_color = 1;
 160         if (!theme)
 161                 set_bluetitle_theme();
 162         else if (strcmp(theme, "classic") == 0)
 163                 set_classic_theme();
 164         else if (strcmp(theme, "bluetitle") == 0)
 165                 set_bluetitle_theme();
 166         else if (strcmp(theme, "blackbg") == 0)
 167                 set_blackbg_theme();
 168         else if (strcmp(theme, "mono") == 0)
 169                 use_color = 0;
 170
 171         return use_color;
 172 }
 173
 174 static void init_one_color(struct dialog_color *color)
 175 {
 176         static int pair = 0;
 177
 178         pair++;
 179         init_pair(pair, color->fg, color->bg);
 180         if (color->hl)
 181                 color->atr = A_BOLD | COLOR_PAIR(pair);
 182         else
 183                 color->atr = COLOR_PAIR(pair);
 184 }
 185
 186 static void init_dialog_colors(void)
 187 {
 188         init_one_color(&dlg.screen);
 189         init_one_color(&dlg.shadow);
 190         init_one_color(&dlg.dialog);
 191         init_one_color(&dlg.title);
 192         init_one_color(&dlg.border);
 193         init_one_color(&dlg.button_active);
 194         init_one_color(&dlg.button_inactive);
 195         init_one_color(&dlg.button_key_active);
 196         init_one_color(&dlg.button_key_inactive);
 197         init_one_color(&dlg.button_label_active);
 198         init_one_color(&dlg.button_label_inactive);
 199         init_one_color(&dlg.inputbox);
 200         init_one_color(&dlg.inputbox_border);
 201         init_one_color(&dlg.searchbox);
 202         init_one_color(&dlg.searchbox_title);
 203         init_one_color(&dlg.searchbox_border);
 204         init_one_color(&dlg.position_indicator);
 205         init_one_color(&dlg.menubox);
 206         init_one_color(&dlg.menubox_border);
 207         init_one_color(&dlg.item);
 208         init_one_color(&dlg.item_selected);
 209         init_one_color(&dlg.tag);
 210         init_one_color(&dlg.tag_selected);
 211         init_one_color(&dlg.tag_key);
 212         init_one_color(&dlg.tag_key_selected);
 213         init_one_color(&dlg.check);
 214         init_one_color(&dlg.check_selected);
 215         init_one_color(&dlg.uarrow);
 216         init_one_color(&dlg.darrow);
 217 }
 218
 219 /*
 220  * Setup for color display
 221  */
 222 static void color_setup(const char *theme)
 223 {
 224         int use_color;
 225
 226         use_color = set_theme(theme);
 227         if (use_color && has_colors()) {
 228                 start_color();
 229                 init_dialog_colors();
 230         } else
 231                 set_mono_theme();
 232 }
 233
 234 /*
 235  * Set window to attribute 'attr'
 236  */
 237 void attr_clear(WINDOW * win, int height, int width, chtype attr)
 238 {
 239         int i, j;
 240
 241         wattrset(win, attr);
 242         for (i = 0; i < height; i++) {
 243                 wmove(win, i, 0);
 244                 for (j = 0; j < width; j++)
 245                         waddch(win, ' ');
 246         }
 247         touchwin(win);
 248 }
 249
 250 void dialog_clear(void)
 251 {
 252         attr_clear(stdscr, LINES, COLS, dlg.screen.atr);
 253         /* Display background title if it exists ... - SLH */
 254         if (dlg.backtitle != NULL) {
 255                 int i;
 256
 257                 wattrset(stdscr, dlg.screen.atr);
 258                 mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
 259                 wmove(stdscr, 1, 1);
 260                 for (i = 1; i < COLS - 1; i++)
 261                         waddch(stdscr, ACS_HLINE);
 262         }
 263         wnoutrefresh(stdscr);
 264 }
 265
 266 /*
 267  * Do some initialization for dialog
 268  */
 269 void init_dialog(const char *backtitle)
 270 {
 271         dlg.backtitle = backtitle;
 272         color_setup(getenv("MENUCONFIG_COLOR"));
 273 }
 274
 275 void reset_dialog(void)
 276 {
 277         initscr();              /* Init curses */
 278         keypad(stdscr, TRUE);
 279         cbreak();
 280         noecho();
 281         dialog_clear();
 282 }
 283
 284 /*
 285  * End using dialog functions.
 286  */
 287 void end_dialog(void)
 288 {
 289         endwin();
 290 }
 291
 292 /* Print the title of the dialog. Center the title and truncate
 293  * tile if wider than dialog (- 2 chars).
 294  **/
 295 void print_title(WINDOW *dialog, const char *title, int width)
 296 {
 297         if (title) {
 298                 int tlen = MIN(width - 2, strlen(title));
 299                 wattrset(dialog, dlg.title.atr);
 300                 mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
 301                 mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
 302                 waddch(dialog, ' ');
 303         }
 304 }
 305
 306 /*
 307  * Print a string of text in a window, automatically wrap around to the
 308  * next line if the string is too long to fit on one line. Newline
 309  * characters '\n' are replaced by spaces.  We start on a new line
 310  * if there is no room for at least 4 nonblanks following a double-space.
 311  */
 312 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
 313 {
 314         int newl, cur_x, cur_y;
 315         int i, prompt_len, room, wlen;
 316         char tempstr[MAX_LEN + 1], *word, *sp, *sp2;
 317
 318         strcpy(tempstr, prompt);
 319
 320         prompt_len = strlen(tempstr);
 321
 322         /*
 323          * Remove newlines
 324          */
 325         for (i = 0; i < prompt_len; i++) {
 326                 if (tempstr[i] == '\n')
 327                         tempstr[i] = ' ';
 328         }
 329
 330         if (prompt_len <= width - x * 2) {      /* If prompt is short */
 331                 wmove(win, y, (width - prompt_len) / 2);
 332                 waddstr(win, tempstr);
 333         } else {
 334                 cur_x = x;
 335                 cur_y = y;
 336                 newl = 1;
 337                 word = tempstr;
 338                 while (word && *word) {
 339                         sp = index(word, ' ');
 340                         if (sp)
 341                                 *sp++ = 0;
 342
 343                         /* Wrap to next line if either the word does not fit,
 344                            or it is the first word of a new sentence, and it is
 345                            short, and the next word does not fit. */
 346                         room = width - cur_x;
 347                         wlen = strlen(word);
 348                         if (wlen > room ||
 349                             (newl && wlen < 4 && sp
 350                              && wlen + 1 + strlen(sp) > room
 351                              && (!(sp2 = index(sp, ' '))
 352                                  || wlen + 1 + (sp2 - sp) > room))) {
 353                                 cur_y++;
 354                                 cur_x = x;
 355                         }
 356                         wmove(win, cur_y, cur_x);
 357                         waddstr(win, word);
 358                         getyx(win, cur_y, cur_x);
 359                         cur_x++;
 360                         if (sp && *sp == ' ') {
 361                                 cur_x++;        /* double space */
 362                                 while (*++sp == ' ') ;
 363                                 newl = 1;
 364                         } else
 365                                 newl = 0;
 366                         word = sp;
 367                 }
 368         }
 369 }
 370
 371 /*
 372  * Print a button
 373  */
 374 void print_button(WINDOW * win, const char *label, int y, int x, int selected)
 375 {
 376         int i, temp;
 377
 378         wmove(win, y, x);
 379         wattrset(win, selected ? dlg.button_active.atr
 380                  : dlg.button_inactive.atr);
 381         waddstr(win, "<");
 382         temp = strspn(label, " ");
 383         label += temp;
 384         wattrset(win, selected ? dlg.button_label_active.atr
 385                  : dlg.button_label_inactive.atr);
 386         for (i = 0; i < temp; i++)
 387                 waddch(win, ' ');
 388         wattrset(win, selected ? dlg.button_key_active.atr
 389                  : dlg.button_key_inactive.atr);
 390         waddch(win, label[0]);
 391         wattrset(win, selected ? dlg.button_label_active.atr
 392                  : dlg.button_label_inactive.atr);
 393         waddstr(win, (char *)label + 1);
 394         wattrset(win, selected ? dlg.button_active.atr
 395                  : dlg.button_inactive.atr);
 396         waddstr(win, ">");
 397         wmove(win, y, x + temp + 1);
 398 }
 399
 400 /*
 401  * Draw a rectangular box with line drawing characters
 402  */
 403 void
 404 draw_box(WINDOW * win, int y, int x, int height, int width,
 405          chtype box, chtype border)
 406 {
 407         int i, j;
 408
 409         wattrset(win, 0);
 410         for (i = 0; i < height; i++) {
 411                 wmove(win, y + i, x);
 412                 for (j = 0; j < width; j++)
 413                         if (!i && !j)
 414                                 waddch(win, border | ACS_ULCORNER);
 415                         else if (i == height - 1 && !j)
 416                                 waddch(win, border | ACS_LLCORNER);
 417                         else if (!i && j == width - 1)
 418                                 waddch(win, box | ACS_URCORNER);
 419                         else if (i == height - 1 && j == width - 1)
 420                                 waddch(win, box | ACS_LRCORNER);
 421                         else if (!i)
 422                                 waddch(win, border | ACS_HLINE);
 423                         else if (i == height - 1)
 424                                 waddch(win, box | ACS_HLINE);
 425                         else if (!j)
 426                                 waddch(win, border | ACS_VLINE);
 427                         else if (j == width - 1)
 428                                 waddch(win, box | ACS_VLINE);
 429                         else
 430                                 waddch(win, box | ' ');
 431         }
 432 }
 433
 434 /*
 435  * Draw shadows along the right and bottom edge to give a more 3D look
 436  * to the boxes
 437  */
 438 void draw_shadow(WINDOW * win, int y, int x, int height, int width)
 439 {
 440         int i;
 441
 442         if (has_colors()) {     /* Whether terminal supports color? */
 443                 wattrset(win, dlg.shadow.atr);
 444                 wmove(win, y + height, x + 2);
 445                 for (i = 0; i < width; i++)
 446                         waddch(win, winch(win) & A_CHARTEXT);
 447                 for (i = y + 1; i < y + height + 1; i++) {
 448                         wmove(win, i, x + width);
 449                         waddch(win, winch(win) & A_CHARTEXT);
 450                         waddch(win, winch(win) & A_CHARTEXT);
 451                 }
 452                 wnoutrefresh(win);
 453         }
 454 }
 455
 456 /*
 457  *  Return the position of the first alphabetic character in a string.
 458  */
 459 int first_alpha(const char *string, const char *exempt)
 460 {
 461         int i, in_paren = 0, c;
 462
 463         for (i = 0; i < strlen(string); i++) {
 464                 c = tolower(string[i]);
 465
 466                 if (strchr("<[(", c))
 467                         ++in_paren;
 468                 if (strchr(">])", c) && in_paren > 0)
 469                         --in_paren;
 470
 471                 if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
 472                         return i;
 473         }
 474
 475         return 0;
 476 }
 477
 478 /*
 479  * ncurses uses ESC to detect escaped char sequences. This resutl in
 480  * a small timeout before ESC is actually delivered to the application.
 481  * lxdialog suggest <ESC> <ESC> which is correctly translated to two
 482  * times esc. But then we need to ignore the second esc to avoid stepping
 483  * out one menu too much. Filter away all escaped key sequences since
 484  * keypad(FALSE) turn off ncurses support for escape sequences - and thats
 485  * needed to make notimeout() do as expected.
 486  */
 487 int on_key_esc(WINDOW *win)
 488 {
 489         int key;
 490         int key2;
 491         int key3;
 492
 493         nodelay(win, TRUE);
 494         keypad(win, FALSE);
 495         key = wgetch(win);
 496         key2 = wgetch(win);
 497         do {
 498                 key3 = wgetch(win);
 499         } while (key3 != ERR);
 500         nodelay(win, FALSE);
 501         keypad(win, TRUE);
 502         if (key == KEY_ESC && key2 == ERR)
 503                 return KEY_ESC;
 504         else if (key != ERR && key != KEY_ESC && key2 == ERR)
 505                 ungetch(key);
 506
 507         return -1;
 508 }
 509
 510 /* redraw screen in new size */
 511 int on_key_resize(void)
 512 {
 513         dialog_clear();
 514         return KEY_RESIZE;
 515 }
 516
 517 struct dialog_list *item_cur;
 518 struct dialog_list item_nil;
 519 struct dialog_list *item_head;
 520
 521 void item_reset(void)
 522 {
 523         struct dialog_list *p, *next;
 524
 525         for (p = item_head; p; p = next) {
 526                 next = p->next;
 527                 free(p);
 528         }
 529         item_head = NULL;
 530         item_cur = &item_nil;
 531 }
 532
 533 void item_make(const char *fmt, ...)
 534 {
 535         va_list ap;
 536         struct dialog_list *p = malloc(sizeof(*p));
 537
 538         if (item_head)
 539                 item_cur->next = p;
 540         else
 541                 item_head = p;
 542         item_cur = p;
 543         memset(p, 0, sizeof(*p));
 544
 545         va_start(ap, fmt);
 546         vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap);
 547         va_end(ap);
 548 }
 549
 550 void item_add_str(const char *fmt, ...)
 551 {
 552         va_list ap;
 553         size_t avail;
 554
 555         avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str);
 556
 557         va_start(ap, fmt);
 558         vsnprintf(item_cur->node.str + strlen(item_cur->node.str),
 559                   avail, fmt, ap);
 560         item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0';
 561         va_end(ap);
 562 }
 563
 564 void item_set_tag(char tag)
 565 {
 566         item_cur->node.tag = tag;
 567 }
 568 void item_set_data(void *ptr)
 569 {
 570         item_cur->node.data = ptr;
 571 }
 572
 573 void item_set_selected(int val)
 574 {
 575         item_cur->node.selected = val;
 576 }
 577
 578 int item_activate_selected(void)
 579 {
 580         item_foreach()
 581                 if (item_is_selected())
 582                         return 1;
 583         return 0;
 584 }
 585
 586 void *item_data(void)
 587 {
 588         return item_cur->node.data;
 589 }
 590
 591 char item_tag(void)
 592 {
 593         return item_cur->node.tag;
 594 }
 595
 596 int item_count(void)
 597 {
 598         int n = 0;
 599         struct dialog_list *p;
 600
 601         for (p = item_head; p; p = p->next)
 602                 n++;
 603         return n;
 604 }
 605
 606 void item_set(int n)
 607 {
 608         int i = 0;
 609         item_foreach()
 610                 if (i++ == n)
 611                         return;
 612 }
 613
 614 int item_n(void)
 615 {
 616         int n = 0;
 617         struct dialog_list *p;
 618
 619         for (p = item_head; p; p = p->next) {
 620                 if (p == item_cur)
 621                         return n;
 622                 n++;
 623         }
 624         return 0;
 625 }
 626
 627 const char *item_str(void)
 628 {
 629         return item_cur->node.str;
 630 }
 631
 632 int item_is_selected(void)
 633 {
 634         return (item_cur->node.selected != 0);
 635 }
 636
 637 int item_is_tag(char tag)
 638 {
 639         return (item_cur->node.tag == tag);
 640 }