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TOMOYO Linux Cross Reference
Linux/scripts/kconfig/lxdialog/util.c

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  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 <stdarg.h>
 23 
 24 #include "dialog.h"
 25 
 26 /* Needed in signal handler in mconf.c */
 27 int saved_x, saved_y;
 28 
 29 struct dialog_info dlg;
 30 
 31 static void set_mono_theme(void)
 32 {
 33         dlg.screen.atr = A_NORMAL;
 34         dlg.shadow.atr = A_NORMAL;
 35         dlg.dialog.atr = A_NORMAL;
 36         dlg.title.atr = A_BOLD;
 37         dlg.border.atr = A_NORMAL;
 38         dlg.button_active.atr = A_REVERSE;
 39         dlg.button_inactive.atr = A_DIM;
 40         dlg.button_key_active.atr = A_REVERSE;
 41         dlg.button_key_inactive.atr = A_BOLD;
 42         dlg.button_label_active.atr = A_REVERSE;
 43         dlg.button_label_inactive.atr = A_NORMAL;
 44         dlg.inputbox.atr = A_NORMAL;
 45         dlg.inputbox_border.atr = A_NORMAL;
 46         dlg.searchbox.atr = A_NORMAL;
 47         dlg.searchbox_title.atr = A_BOLD;
 48         dlg.searchbox_border.atr = A_NORMAL;
 49         dlg.position_indicator.atr = A_BOLD;
 50         dlg.menubox.atr = A_NORMAL;
 51         dlg.menubox_border.atr = A_NORMAL;
 52         dlg.item.atr = A_NORMAL;
 53         dlg.item_selected.atr = A_REVERSE;
 54         dlg.tag.atr = A_BOLD;
 55         dlg.tag_selected.atr = A_REVERSE;
 56         dlg.tag_key.atr = A_BOLD;
 57         dlg.tag_key_selected.atr = A_REVERSE;
 58         dlg.check.atr = A_BOLD;
 59         dlg.check_selected.atr = A_REVERSE;
 60         dlg.uarrow.atr = A_BOLD;
 61         dlg.darrow.atr = A_BOLD;
 62 }
 63 
 64 #define DLG_COLOR(dialog, f, b, h) \
 65 do {                               \
 66         dlg.dialog.fg = (f);       \
 67         dlg.dialog.bg = (b);       \
 68         dlg.dialog.hl = (h);       \
 69 } while (0)
 70 
 71 static void set_classic_theme(void)
 72 {
 73         DLG_COLOR(screen,                COLOR_CYAN,   COLOR_BLUE,   true);
 74         DLG_COLOR(shadow,                COLOR_BLACK,  COLOR_BLACK,  true);
 75         DLG_COLOR(dialog,                COLOR_BLACK,  COLOR_WHITE,  false);
 76         DLG_COLOR(title,                 COLOR_YELLOW, COLOR_WHITE,  true);
 77         DLG_COLOR(border,                COLOR_WHITE,  COLOR_WHITE,  true);
 78         DLG_COLOR(button_active,         COLOR_WHITE,  COLOR_BLUE,   true);
 79         DLG_COLOR(button_inactive,       COLOR_BLACK,  COLOR_WHITE,  false);
 80         DLG_COLOR(button_key_active,     COLOR_WHITE,  COLOR_BLUE,   true);
 81         DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_WHITE,  false);
 82         DLG_COLOR(button_label_active,   COLOR_YELLOW, COLOR_BLUE,   true);
 83         DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_WHITE,  true);
 84         DLG_COLOR(inputbox,              COLOR_BLACK,  COLOR_WHITE,  false);
 85         DLG_COLOR(inputbox_border,       COLOR_BLACK,  COLOR_WHITE,  false);
 86         DLG_COLOR(searchbox,             COLOR_BLACK,  COLOR_WHITE,  false);
 87         DLG_COLOR(searchbox_title,       COLOR_YELLOW, COLOR_WHITE,  true);
 88         DLG_COLOR(searchbox_border,      COLOR_WHITE,  COLOR_WHITE,  true);
 89         DLG_COLOR(position_indicator,    COLOR_YELLOW, COLOR_WHITE,  true);
 90         DLG_COLOR(menubox,               COLOR_BLACK,  COLOR_WHITE,  false);
 91         DLG_COLOR(menubox_border,        COLOR_WHITE,  COLOR_WHITE,  true);
 92         DLG_COLOR(item,                  COLOR_BLACK,  COLOR_WHITE,  false);
 93         DLG_COLOR(item_selected,         COLOR_WHITE,  COLOR_BLUE,   true);
 94         DLG_COLOR(tag,                   COLOR_YELLOW, COLOR_WHITE,  true);
 95         DLG_COLOR(tag_selected,          COLOR_YELLOW, COLOR_BLUE,   true);
 96         DLG_COLOR(tag_key,               COLOR_YELLOW, COLOR_WHITE,  true);
 97         DLG_COLOR(tag_key_selected,      COLOR_YELLOW, COLOR_BLUE,   true);
 98         DLG_COLOR(check,                 COLOR_BLACK,  COLOR_WHITE,  false);
 99         DLG_COLOR(check_selected,        COLOR_WHITE,  COLOR_BLUE,   true);
100         DLG_COLOR(uarrow,                COLOR_GREEN,  COLOR_WHITE,  true);
101         DLG_COLOR(darrow,                COLOR_GREEN,  COLOR_WHITE,  true);
102 }
103 
104 static void set_blackbg_theme(void)
105 {
106         DLG_COLOR(screen, COLOR_RED,   COLOR_BLACK, true);
107         DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false);
108         DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false);
109         DLG_COLOR(title,  COLOR_RED,   COLOR_BLACK, false);
110         DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true);
111 
112         DLG_COLOR(button_active,         COLOR_YELLOW, COLOR_RED,   false);
113         DLG_COLOR(button_inactive,       COLOR_YELLOW, COLOR_BLACK, false);
114         DLG_COLOR(button_key_active,     COLOR_YELLOW, COLOR_RED,   true);
115         DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_BLACK, false);
116         DLG_COLOR(button_label_active,   COLOR_WHITE,  COLOR_RED,   false);
117         DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_BLACK, true);
118 
119         DLG_COLOR(inputbox,         COLOR_YELLOW, COLOR_BLACK, false);
120         DLG_COLOR(inputbox_border,  COLOR_YELLOW, COLOR_BLACK, false);
121 
122         DLG_COLOR(searchbox,        COLOR_YELLOW, COLOR_BLACK, false);
123         DLG_COLOR(searchbox_title,  COLOR_YELLOW, COLOR_BLACK, true);
124         DLG_COLOR(searchbox_border, COLOR_BLACK,  COLOR_BLACK, true);
125 
126         DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK,  false);
127 
128         DLG_COLOR(menubox,          COLOR_YELLOW, COLOR_BLACK, false);
129         DLG_COLOR(menubox_border,   COLOR_BLACK,  COLOR_BLACK, true);
130 
131         DLG_COLOR(item,             COLOR_WHITE, COLOR_BLACK, false);
132         DLG_COLOR(item_selected,    COLOR_WHITE, COLOR_RED,   false);
133 
134         DLG_COLOR(tag,              COLOR_RED,    COLOR_BLACK, false);
135         DLG_COLOR(tag_selected,     COLOR_YELLOW, COLOR_RED,   true);
136         DLG_COLOR(tag_key,          COLOR_RED,    COLOR_BLACK, false);
137         DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED,   true);
138 
139         DLG_COLOR(check,            COLOR_YELLOW, COLOR_BLACK, false);
140         DLG_COLOR(check_selected,   COLOR_YELLOW, COLOR_RED,   true);
141 
142         DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false);
143         DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false);
144 }
145 
146 static void set_bluetitle_theme(void)
147 {
148         set_classic_theme();
149         DLG_COLOR(title,               COLOR_BLUE,   COLOR_WHITE, true);
150         DLG_COLOR(button_key_active,   COLOR_YELLOW, COLOR_BLUE,  true);
151         DLG_COLOR(button_label_active, COLOR_WHITE,  COLOR_BLUE,  true);
152         DLG_COLOR(searchbox_title,     COLOR_BLUE,   COLOR_WHITE, true);
153         DLG_COLOR(position_indicator,  COLOR_BLUE,   COLOR_WHITE, true);
154         DLG_COLOR(tag,                 COLOR_BLUE,   COLOR_WHITE, true);
155         DLG_COLOR(tag_key,             COLOR_BLUE,   COLOR_WHITE, true);
156 
157 }
158 
159 /*
160  * Select color theme
161  */
162 static int set_theme(const char *theme)
163 {
164         int use_color = 1;
165         if (!theme)
166                 set_bluetitle_theme();
167         else if (strcmp(theme, "classic") == 0)
168                 set_classic_theme();
169         else if (strcmp(theme, "bluetitle") == 0)
170                 set_bluetitle_theme();
171         else if (strcmp(theme, "blackbg") == 0)
172                 set_blackbg_theme();
173         else if (strcmp(theme, "mono") == 0)
174                 use_color = 0;
175 
176         return use_color;
177 }
178 
179 static void init_one_color(struct dialog_color *color)
180 {
181         static int pair = 0;
182 
183         pair++;
184         init_pair(pair, color->fg, color->bg);
185         if (color->hl)
186                 color->atr = A_BOLD | COLOR_PAIR(pair);
187         else
188                 color->atr = COLOR_PAIR(pair);
189 }
190 
191 static void init_dialog_colors(void)
192 {
193         init_one_color(&dlg.screen);
194         init_one_color(&dlg.shadow);
195         init_one_color(&dlg.dialog);
196         init_one_color(&dlg.title);
197         init_one_color(&dlg.border);
198         init_one_color(&dlg.button_active);
199         init_one_color(&dlg.button_inactive);
200         init_one_color(&dlg.button_key_active);
201         init_one_color(&dlg.button_key_inactive);
202         init_one_color(&dlg.button_label_active);
203         init_one_color(&dlg.button_label_inactive);
204         init_one_color(&dlg.inputbox);
205         init_one_color(&dlg.inputbox_border);
206         init_one_color(&dlg.searchbox);
207         init_one_color(&dlg.searchbox_title);
208         init_one_color(&dlg.searchbox_border);
209         init_one_color(&dlg.position_indicator);
210         init_one_color(&dlg.menubox);
211         init_one_color(&dlg.menubox_border);
212         init_one_color(&dlg.item);
213         init_one_color(&dlg.item_selected);
214         init_one_color(&dlg.tag);
215         init_one_color(&dlg.tag_selected);
216         init_one_color(&dlg.tag_key);
217         init_one_color(&dlg.tag_key_selected);
218         init_one_color(&dlg.check);
219         init_one_color(&dlg.check_selected);
220         init_one_color(&dlg.uarrow);
221         init_one_color(&dlg.darrow);
222 }
223 
224 /*
225  * Setup for color display
226  */
227 static void color_setup(const char *theme)
228 {
229         int use_color;
230 
231         use_color = set_theme(theme);
232         if (use_color && has_colors()) {
233                 start_color();
234                 init_dialog_colors();
235         } else
236                 set_mono_theme();
237 }
238 
239 /*
240  * Set window to attribute 'attr'
241  */
242 void attr_clear(WINDOW * win, int height, int width, chtype attr)
243 {
244         int i, j;
245 
246         wattrset(win, attr);
247         for (i = 0; i < height; i++) {
248                 wmove(win, i, 0);
249                 for (j = 0; j < width; j++)
250                         waddch(win, ' ');
251         }
252         touchwin(win);
253 }
254 
255 void dialog_clear(void)
256 {
257         int lines, columns;
258 
259         lines = getmaxy(stdscr);
260         columns = getmaxx(stdscr);
261 
262         attr_clear(stdscr, lines, columns, dlg.screen.atr);
263         /* Display background title if it exists ... - SLH */
264         if (dlg.backtitle != NULL) {
265                 int i, len = 0, skip = 0;
266                 struct subtitle_list *pos;
267 
268                 wattrset(stdscr, dlg.screen.atr);
269                 mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
270 
271                 for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
272                         /* 3 is for the arrow and spaces */
273                         len += strlen(pos->text) + 3;
274                 }
275 
276                 wmove(stdscr, 1, 1);
277                 if (len > columns - 2) {
278                         const char *ellipsis = "[...] ";
279                         waddstr(stdscr, ellipsis);
280                         skip = len - (columns - 2 - strlen(ellipsis));
281                 }
282 
283                 for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
284                         if (skip == 0)
285                                 waddch(stdscr, ACS_RARROW);
286                         else
287                                 skip--;
288 
289                         if (skip == 0)
290                                 waddch(stdscr, ' ');
291                         else
292                                 skip--;
293 
294                         if (skip < strlen(pos->text)) {
295                                 waddstr(stdscr, pos->text + skip);
296                                 skip = 0;
297                         } else
298                                 skip -= strlen(pos->text);
299 
300                         if (skip == 0)
301                                 waddch(stdscr, ' ');
302                         else
303                                 skip--;
304                 }
305 
306                 for (i = len + 1; i < columns - 1; i++)
307                         waddch(stdscr, ACS_HLINE);
308         }
309         wnoutrefresh(stdscr);
310 }
311 
312 /*
313  * Do some initialization for dialog
314  */
315 int init_dialog(const char *backtitle)
316 {
317         int height, width;
318 
319         initscr();              /* Init curses */
320 
321         /* Get current cursor position for signal handler in mconf.c */
322         getyx(stdscr, saved_y, saved_x);
323 
324         getmaxyx(stdscr, height, width);
325         if (height < WINDOW_HEIGTH_MIN || width < WINDOW_WIDTH_MIN) {
326                 endwin();
327                 return -ERRDISPLAYTOOSMALL;
328         }
329 
330         dlg.backtitle = backtitle;
331         color_setup(getenv("MENUCONFIG_COLOR"));
332 
333         keypad(stdscr, TRUE);
334         cbreak();
335         noecho();
336         dialog_clear();
337 
338         return 0;
339 }
340 
341 void set_dialog_backtitle(const char *backtitle)
342 {
343         dlg.backtitle = backtitle;
344 }
345 
346 void set_dialog_subtitles(struct subtitle_list *subtitles)
347 {
348         dlg.subtitles = subtitles;
349 }
350 
351 /*
352  * End using dialog functions.
353  */
354 void end_dialog(int x, int y)
355 {
356         /* move cursor back to original position */
357         move(y, x);
358         refresh();
359         endwin();
360 }
361 
362 /* Print the title of the dialog. Center the title and truncate
363  * tile if wider than dialog (- 2 chars).
364  **/
365 void print_title(WINDOW *dialog, const char *title, int width)
366 {
367         if (title) {
368                 int tlen = MIN(width - 2, strlen(title));
369                 wattrset(dialog, dlg.title.atr);
370                 mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
371                 mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
372                 waddch(dialog, ' ');
373         }
374 }
375 
376 /*
377  * Print a string of text in a window, automatically wrap around to the
378  * next line if the string is too long to fit on one line. Newline
379  * characters '\n' are propperly processed.  We start on a new line
380  * if there is no room for at least 4 nonblanks following a double-space.
381  */
382 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
383 {
384         int newl, cur_x, cur_y;
385         int prompt_len, room, wlen;
386         char tempstr[MAX_LEN + 1], *word, *sp, *sp2, *newline_separator = 0;
387 
388         strcpy(tempstr, prompt);
389 
390         prompt_len = strlen(tempstr);
391 
392         if (prompt_len <= width - x * 2) {      /* If prompt is short */
393                 wmove(win, y, (width - prompt_len) / 2);
394                 waddstr(win, tempstr);
395         } else {
396                 cur_x = x;
397                 cur_y = y;
398                 newl = 1;
399                 word = tempstr;
400                 while (word && *word) {
401                         sp = strpbrk(word, "\n ");
402                         if (sp && *sp == '\n')
403                                 newline_separator = sp;
404 
405                         if (sp)
406                                 *sp++ = 0;
407 
408                         /* Wrap to next line if either the word does not fit,
409                            or it is the first word of a new sentence, and it is
410                            short, and the next word does not fit. */
411                         room = width - cur_x;
412                         wlen = strlen(word);
413                         if (wlen > room ||
414                             (newl && wlen < 4 && sp
415                              && wlen + 1 + strlen(sp) > room
416                              && (!(sp2 = strpbrk(sp, "\n "))
417                                  || wlen + 1 + (sp2 - sp) > room))) {
418                                 cur_y++;
419                                 cur_x = x;
420                         }
421                         wmove(win, cur_y, cur_x);
422                         waddstr(win, word);
423                         getyx(win, cur_y, cur_x);
424 
425                         /* Move to the next line if the word separator was a newline */
426                         if (newline_separator) {
427                                 cur_y++;
428                                 cur_x = x;
429                                 newline_separator = 0;
430                         } else
431                                 cur_x++;
432 
433                         if (sp && *sp == ' ') {
434                                 cur_x++;        /* double space */
435                                 while (*++sp == ' ') ;
436                                 newl = 1;
437                         } else
438                                 newl = 0;
439                         word = sp;
440                 }
441         }
442 }
443 
444 /*
445  * Print a button
446  */
447 void print_button(WINDOW * win, const char *label, int y, int x, int selected)
448 {
449         int i, temp;
450 
451         wmove(win, y, x);
452         wattrset(win, selected ? dlg.button_active.atr
453                  : dlg.button_inactive.atr);
454         waddstr(win, "<");
455         temp = strspn(label, " ");
456         label += temp;
457         wattrset(win, selected ? dlg.button_label_active.atr
458                  : dlg.button_label_inactive.atr);
459         for (i = 0; i < temp; i++)
460                 waddch(win, ' ');
461         wattrset(win, selected ? dlg.button_key_active.atr
462                  : dlg.button_key_inactive.atr);
463         waddch(win, label[0]);
464         wattrset(win, selected ? dlg.button_label_active.atr
465                  : dlg.button_label_inactive.atr);
466         waddstr(win, (char *)label + 1);
467         wattrset(win, selected ? dlg.button_active.atr
468                  : dlg.button_inactive.atr);
469         waddstr(win, ">");
470         wmove(win, y, x + temp + 1);
471 }
472 
473 /*
474  * Draw a rectangular box with line drawing characters
475  */
476 void
477 draw_box(WINDOW * win, int y, int x, int height, int width,
478          chtype box, chtype border)
479 {
480         int i, j;
481 
482         wattrset(win, 0);
483         for (i = 0; i < height; i++) {
484                 wmove(win, y + i, x);
485                 for (j = 0; j < width; j++)
486                         if (!i && !j)
487                                 waddch(win, border | ACS_ULCORNER);
488                         else if (i == height - 1 && !j)
489                                 waddch(win, border | ACS_LLCORNER);
490                         else if (!i && j == width - 1)
491                                 waddch(win, box | ACS_URCORNER);
492                         else if (i == height - 1 && j == width - 1)
493                                 waddch(win, box | ACS_LRCORNER);
494                         else if (!i)
495                                 waddch(win, border | ACS_HLINE);
496                         else if (i == height - 1)
497                                 waddch(win, box | ACS_HLINE);
498                         else if (!j)
499                                 waddch(win, border | ACS_VLINE);
500                         else if (j == width - 1)
501                                 waddch(win, box | ACS_VLINE);
502                         else
503                                 waddch(win, box | ' ');
504         }
505 }
506 
507 /*
508  * Draw shadows along the right and bottom edge to give a more 3D look
509  * to the boxes
510  */
511 void draw_shadow(WINDOW * win, int y, int x, int height, int width)
512 {
513         int i;
514 
515         if (has_colors()) {     /* Whether terminal supports color? */
516                 wattrset(win, dlg.shadow.atr);
517                 wmove(win, y + height, x + 2);
518                 for (i = 0; i < width; i++)
519                         waddch(win, winch(win) & A_CHARTEXT);
520                 for (i = y + 1; i < y + height + 1; i++) {
521                         wmove(win, i, x + width);
522                         waddch(win, winch(win) & A_CHARTEXT);
523                         waddch(win, winch(win) & A_CHARTEXT);
524                 }
525                 wnoutrefresh(win);
526         }
527 }
528 
529 /*
530  *  Return the position of the first alphabetic character in a string.
531  */
532 int first_alpha(const char *string, const char *exempt)
533 {
534         int i, in_paren = 0, c;
535 
536         for (i = 0; i < strlen(string); i++) {
537                 c = tolower(string[i]);
538 
539                 if (strchr("<[(", c))
540                         ++in_paren;
541                 if (strchr(">])", c) && in_paren > 0)
542                         --in_paren;
543 
544                 if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
545                         return i;
546         }
547 
548         return 0;
549 }
550 
551 /*
552  * ncurses uses ESC to detect escaped char sequences. This resutl in
553  * a small timeout before ESC is actually delivered to the application.
554  * lxdialog suggest <ESC> <ESC> which is correctly translated to two
555  * times esc. But then we need to ignore the second esc to avoid stepping
556  * out one menu too much. Filter away all escaped key sequences since
557  * keypad(FALSE) turn off ncurses support for escape sequences - and thats
558  * needed to make notimeout() do as expected.
559  */
560 int on_key_esc(WINDOW *win)
561 {
562         int key;
563         int key2;
564         int key3;
565 
566         nodelay(win, TRUE);
567         keypad(win, FALSE);
568         key = wgetch(win);
569         key2 = wgetch(win);
570         do {
571                 key3 = wgetch(win);
572         } while (key3 != ERR);
573         nodelay(win, FALSE);
574         keypad(win, TRUE);
575         if (key == KEY_ESC && key2 == ERR)
576                 return KEY_ESC;
577         else if (key != ERR && key != KEY_ESC && key2 == ERR)
578                 ungetch(key);
579 
580         return -1;
581 }
582 
583 /* redraw screen in new size */
584 int on_key_resize(void)
585 {
586         dialog_clear();
587         return KEY_RESIZE;
588 }
589 
590 struct dialog_list *item_cur;
591 struct dialog_list item_nil;
592 struct dialog_list *item_head;
593 
594 void item_reset(void)
595 {
596         struct dialog_list *p, *next;
597 
598         for (p = item_head; p; p = next) {
599                 next = p->next;
600                 free(p);
601         }
602         item_head = NULL;
603         item_cur = &item_nil;
604 }
605 
606 void item_make(const char *fmt, ...)
607 {
608         va_list ap;
609         struct dialog_list *p = malloc(sizeof(*p));
610 
611         if (item_head)
612                 item_cur->next = p;
613         else
614                 item_head = p;
615         item_cur = p;
616         memset(p, 0, sizeof(*p));
617 
618         va_start(ap, fmt);
619         vsnprintf(item_cur->node.str, sizeof(item_cur->node.str), fmt, ap);
620         va_end(ap);
621 }
622 
623 void item_add_str(const char *fmt, ...)
624 {
625         va_list ap;
626         size_t avail;
627 
628         avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str);
629 
630         va_start(ap, fmt);
631         vsnprintf(item_cur->node.str + strlen(item_cur->node.str),
632                   avail, fmt, ap);
633         item_cur->node.str[sizeof(item_cur->node.str) - 1] = '\0';
634         va_end(ap);
635 }
636 
637 void item_set_tag(char tag)
638 {
639         item_cur->node.tag = tag;
640 }
641 void item_set_data(void *ptr)
642 {
643         item_cur->node.data = ptr;
644 }
645 
646 void item_set_selected(int val)
647 {
648         item_cur->node.selected = val;
649 }
650 
651 int item_activate_selected(void)
652 {
653         item_foreach()
654                 if (item_is_selected())
655                         return 1;
656         return 0;
657 }
658 
659 void *item_data(void)
660 {
661         return item_cur->node.data;
662 }
663 
664 char item_tag(void)
665 {
666         return item_cur->node.tag;
667 }
668 
669 int item_count(void)
670 {
671         int n = 0;
672         struct dialog_list *p;
673 
674         for (p = item_head; p; p = p->next)
675                 n++;
676         return n;
677 }
678 
679 void item_set(int n)
680 {
681         int i = 0;
682         item_foreach()
683                 if (i++ == n)
684                         return;
685 }
686 
687 int item_n(void)
688 {
689         int n = 0;
690         struct dialog_list *p;
691 
692         for (p = item_head; p; p = p->next) {
693                 if (p == item_cur)
694                         return n;
695                 n++;
696         }
697         return 0;
698 }
699 
700 const char *item_str(void)
701 {
702         return item_cur->node.str;
703 }
704 
705 int item_is_selected(void)
706 {
707         return (item_cur->node.selected != 0);
708 }
709 
710 int item_is_tag(char tag)
711 {
712         return (item_cur->node.tag == tag);
713 }
714 

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