apps/filetree.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 by Björn Stenberg
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include <stdlib.h>
  22 #include <file.h>
  23 #include <dir.h>
  24 #include <string.h>
  25 #include <kernel.h>
  26 #include <lcd.h>
  27 #include <debug.h>
  28 #include <font.h>
  29 #include <limits.h>
  30 #include "bookmark.h"
  31 #include "tree.h"
  32 #include "settings.h"
  33 #include "filetypes.h"
  34 #include "talk.h"
  35 #include "playlist.h"
  36 #include "lang.h"
  37 #include "language.h"
  38 #include "screens.h"
  39 #include "plugin.h"
  40 #include "rolo.h"
  41 #include "sprintf.h"
  42 #include "splash.h"
  43 #include "cuesheet.h"
  44 #include "filetree.h"
  45 #include "misc.h"
  46 #include "strnatcmp.h"
  47 #ifdef HAVE_LCD_BITMAP
  48 #include "keyboard.h"
  49 #endif
  50
  51 #if CONFIG_TUNER
  52 #include "radio.h"
  53 #endif
  54 #include "wps.h"
  55 #include "backdrop.h"
  56
  57 static int compare_sort_dir; /* qsort key for sorting directories */
  58
  59 int ft_build_playlist(struct tree_context* c, int start_index)
  60 {
  61     int i;
  62     int start=start_index;
  63
  64     struct entry *dircache = c->dircache;
  65
  66     for(i = 0;i < c->filesindir;i++)
  67     {
  68         if((dircache[i].attr & FILE_ATTR_MASK) == FILE_ATTR_AUDIO)
  69         {
  70             if (playlist_add(dircache[i].name) < 0)
  71                 break;
  72         }
  73         else
  74         {
  75             /* Adjust the start index when se skip non-MP3 entries */
  76             if(i < start)
  77                 start_index--;
  78         }
  79     }
  80
  81     return start_index;
  82 }
  83
  84 /* Start playback of a playlist, checking for bookmark autoload, modified
  85  * playlists, etc., as required. Returns false if playback wasn't started,
  86  * or started via bookmark autoload, true otherwise.
  87  *
  88  * Pointers to both the full pathname and the separated parts needed to
  89  * avoid allocating yet another path buffer on the stack (and save some
  90  * code; the caller typically needs to create the full pathname anyway)...
  91  */
  92 bool ft_play_playlist(char* pathname, char* dirname, char* filename)
  93 {
  94     if (global_settings.party_mode && audio_status())
  95     {
  96         splash(HZ, ID2P(LANG_PARTY_MODE));
  97         return false;
  98     }
  99
 100     if (bookmark_autoload(pathname))
 101     {
 102         return false;
 103     }
 104
 105     splash(0, ID2P(LANG_WAIT));
 106
 107     /* about to create a new current playlist...
 108        allow user to cancel the operation */
 109     if (!warn_on_pl_erase())
 110         return false;
 111
 112     if (playlist_create(dirname, filename) != -1)
 113     {
 114         if (global_settings.playlist_shuffle)
 115         {
 116             playlist_shuffle(current_tick, -1);
 117         }
 118
 119         playlist_start(0, 0);
 120         return true;
 121     }
 122
 123     return false;
 124 }
 125
 126 /* walk a directory and check all dircache entries if a .talk file exists */
 127 static void check_file_thumbnails(struct tree_context* c)
 128 {
 129     int i;
 130     struct dirent *entry;
 131     struct entry* dircache = c->dircache;
 132     DIR *dir;
 133
 134     dir = opendir(c->currdir);
 135     if(!dir)
 136         return;
 137     /* mark all files as non talking, except the .talk ones */
 138     for (i=0; i < c->filesindir; i++)
 139     {
 140         if (dircache[i].attr & ATTR_DIRECTORY)
 141             continue; /* we're not touching directories */
 142
 143         if (strcasecmp(file_thumbnail_ext,
 144             &dircache[i].name[strlen(dircache[i].name)
 145                               - strlen(file_thumbnail_ext)]))
 146         {   /* no .talk file */
 147             dircache[i].attr &= ~FILE_ATTR_THUMBNAIL; /* clear */
 148         }
 149         else
 150         {   /* .talk file, we later let them speak themselves */
 151             dircache[i].attr |= FILE_ATTR_THUMBNAIL; /* set */
 152         }
 153     }
 154
 155     while((entry = readdir(dir)) != 0) /* walk directory */
 156     {
 157         int ext_pos;
 158
 159         ext_pos = strlen((char *)entry->d_name) - strlen(file_thumbnail_ext);
 160         if (ext_pos <= 0 /* too short to carry ".talk" */
 161             || (entry->attribute & ATTR_DIRECTORY) /* no file */
 162             || strcasecmp((char *)&entry->d_name[ext_pos], file_thumbnail_ext))
 163         {   /* or doesn't end with ".talk", no candidate */
 164             continue;
 165         }
 166
 167         /* terminate the (disposable) name in dir buffer,
 168            this truncates off the ".talk" without needing an extra buffer */
 169         entry->d_name[ext_pos] = '\0';
 170
 171         /* search corresponding file in dir cache */
 172         for (i=0; i < c->filesindir; i++)
 173         {
 174             if (!strcasecmp(dircache[i].name, (char *)entry->d_name))
 175             {   /* match */
 176                 dircache[i].attr |= FILE_ATTR_THUMBNAIL; /* set the flag */
 177                 break; /* exit search loop, because we found it */
 178             }
 179         }
 180     }
 181     closedir(dir);
 182 }
 183
 184 /* support function for qsort() */
 185 static int compare(const void* p1, const void* p2)
 186 {
 187     struct entry* e1 = (struct entry*)p1;
 188     struct entry* e2 = (struct entry*)p2;
 189     int criteria;
 190
 191     if (e1->attr & ATTR_DIRECTORY && e2->attr & ATTR_DIRECTORY)
 192     {   /* two directories */
 193         criteria = compare_sort_dir;
 194
 195 #ifdef HAVE_MULTIVOLUME
 196         if (e1->attr & ATTR_VOLUME || e2->attr & ATTR_VOLUME)
 197         {   /* a volume identifier is involved */
 198             if (e1->attr & ATTR_VOLUME && e2->attr & ATTR_VOLUME)
 199                 criteria = SORT_ALPHA; /* two volumes: sort alphabetically */
 200             else /* only one is a volume: volume first */
 201                 return (e2->attr & ATTR_VOLUME) - (e1->attr & ATTR_VOLUME);
 202         }
 203 #endif
 204
 205     }
 206     else if (!(e1->attr & ATTR_DIRECTORY) && !(e2->attr & ATTR_DIRECTORY))
 207     {   /* two files */
 208         criteria = global_settings.sort_file;
 209     }
 210     else /* dir and file, dir goes first */
 211         return (e2->attr & ATTR_DIRECTORY) - (e1->attr & ATTR_DIRECTORY);
 212
 213     switch(criteria)
 214     {
 215         case SORT_TYPE:
 216         case SORT_TYPE_REVERSED:
 217         {
 218             int t1 = e1->attr & FILE_ATTR_MASK;
 219             int t2 = e2->attr & FILE_ATTR_MASK;
 220
 221             if (!t1) /* unknown type */
 222                 t1 = INT_MAX; /* gets a high number, to sort after known */
 223             if (!t2) /* unknown type */
 224                 t2 = INT_MAX; /* gets a high number, to sort after known */
 225
 226             if (t1 != t2) /* if different */
 227                 return (t1 - t2) * (criteria == SORT_TYPE_REVERSED ? -1 : 1);
 228             /* else fall through to alphabetical sorting */
 229         }
 230
 231         case SORT_DATE:
 232         case SORT_DATE_REVERSED:
 233             /* Ignore SORT_TYPE */
 234             if (criteria == SORT_DATE || criteria == SORT_DATE_REVERSED)
 235             {
 236                 if (e1->time_write != e2->time_write)
 237                     return (e1->time_write - e2->time_write)
 238                            * (criteria == SORT_DATE_REVERSED ? -1 : 1);
 239                 /* else fall through to alphabetical sorting */
 240             }
 241
 242         case SORT_ALPHA:
 243         case SORT_ALPHA_REVERSED:
 244         {
 245             if (global_settings.sort_case)
 246             {
 247                 if (global_settings.interpret_numbers == SORT_INTERPRET_AS_NUMBER)
 248                     return strnatcmp(e1->name, e2->name)
 249                            * (criteria == SORT_ALPHA_REVERSED ? -1 : 1);
 250                 else
 251                     return strncmp(e1->name, e2->name, MAX_PATH)
 252                            * (criteria == SORT_ALPHA_REVERSED ? -1 : 1);
 253             }
 254             else
 255             {
 256                 if (global_settings.interpret_numbers == SORT_INTERPRET_AS_NUMBER)
 257                     return strnatcasecmp(e1->name, e2->name)
 258                            * (criteria == SORT_ALPHA_REVERSED ? -1 : 1);
 259                 else
 260                     return strncasecmp(e1->name, e2->name, MAX_PATH)
 261                            * (criteria == SORT_ALPHA_REVERSED ? -1 : 1);
 262             }
 263         }
 264
 265     }
 266     return 0; /* never reached */
 267 }
 268
 269 /* load and sort directory into dircache. returns NULL on failure. */
 270 int ft_load(struct tree_context* c, const char* tempdir)
 271 {
 272     int i;
 273     int name_buffer_used = 0;
 274     DIR *dir;
 275
 276     if (tempdir)
 277         dir = opendir(tempdir);
 278     else
 279         dir = opendir(c->currdir);
 280     if(!dir)
 281         return -1; /* not a directory */
 282
 283     c->dirsindir = 0;
 284     c->dirfull = false;
 285
 286     for ( i=0; i < global_settings.max_files_in_dir; i++ ) {
 287         int len;
 288         struct dirent *entry = readdir(dir);
 289         struct entry* dptr =
 290             (struct entry*)(c->dircache + i * sizeof(struct entry));
 291         if (!entry)
 292             break;
 293
 294         len = strlen((char *)entry->d_name);
 295
 296         /* skip directories . and .. */
 297         if ((entry->attribute & ATTR_DIRECTORY) &&
 298             (((len == 1) && (!strncmp((char *)entry->d_name, ".", 1))) ||
 299              ((len == 2) && (!strncmp((char *)entry->d_name, "..", 2))))) {
 300             i--;
 301             continue;
 302         }
 303
 304         /* Skip FAT volume ID */
 305         if (entry->attribute & ATTR_VOLUME_ID) {
 306             i--;
 307             continue;
 308         }
 309
 310         /* filter out dotfiles and hidden files */
 311         if (*c->dirfilter != SHOW_ALL &&
 312             ((entry->d_name[0]=='.') ||
 313             (entry->attribute & ATTR_HIDDEN))) {
 314             i--;
 315             continue;
 316         }
 317
 318         dptr->attr = entry->attribute;
 319
 320         /* check for known file types */
 321         if ( !(dptr->attr & ATTR_DIRECTORY) )
 322             dptr->attr |= filetype_get_attr((char *)entry->d_name);
 323
 324         /* filter out non-visible files */
 325         if ((!(dptr->attr & ATTR_DIRECTORY) && (
 326             (*c->dirfilter == SHOW_PLAYLIST &&
 327              (dptr->attr & FILE_ATTR_MASK) != FILE_ATTR_M3U) ||
 328             ((*c->dirfilter == SHOW_MUSIC &&
 329              (dptr->attr & FILE_ATTR_MASK) != FILE_ATTR_AUDIO) &&
 330              (dptr->attr & FILE_ATTR_MASK) != FILE_ATTR_M3U) ||
 331             (*c->dirfilter == SHOW_SUPPORTED && !filetype_supported(dptr->attr)))) ||
 332             (*c->dirfilter == SHOW_WPS && (dptr->attr & FILE_ATTR_MASK) != FILE_ATTR_WPS) ||
 333 #ifdef HAVE_REMOTE_LCD
 334             (*c->dirfilter == SHOW_RWPS && (dptr->attr & FILE_ATTR_MASK) != FILE_ATTR_RWPS) ||
 335 #endif
 336 #if CONFIG_TUNER
 337             (*c->dirfilter == SHOW_FMR && (dptr->attr & FILE_ATTR_MASK) != FILE_ATTR_FMR) ||
 338 #endif
 339             (*c->dirfilter == SHOW_CFG && (dptr->attr & FILE_ATTR_MASK) != FILE_ATTR_CFG) ||
 340             (*c->dirfilter == SHOW_LNG && (dptr->attr & FILE_ATTR_MASK) != FILE_ATTR_LNG) ||
 341             (*c->dirfilter == SHOW_MOD && (dptr->attr & FILE_ATTR_MASK) != FILE_ATTR_MOD) ||
 342             (*c->dirfilter == SHOW_FONT && (dptr->attr & FILE_ATTR_MASK) != FILE_ATTR_FONT) ||
 343             (*c->dirfilter == SHOW_PLUGINS && (dptr->attr & FILE_ATTR_MASK) != FILE_ATTR_ROCK))
 344         {
 345             i--;
 346             continue;
 347         }
 348
 349         if (len > c->name_buffer_size - name_buffer_used - 1) {
 350             /* Tell the world that we ran out of buffer space */
 351             c->dirfull = true;
 352             break;
 353         }
 354         dptr->name = &c->name_buffer[name_buffer_used];
 355         dptr->time_write =
 356             (long)entry->wrtdate<<16 |
 357             (long)entry->wrttime; /* in one # */
 358         strcpy(dptr->name, (char *)entry->d_name);
 359         name_buffer_used += len + 1;
 360
 361         if (dptr->attr & ATTR_DIRECTORY) /* count the remaining dirs */
 362             c->dirsindir++;
 363     }
 364     c->filesindir = i;
 365     c->dirlength = i;
 366     closedir(dir);
 367
 368     compare_sort_dir = c->sort_dir;
 369     qsort(c->dircache,i,sizeof(struct entry),compare);
 370
 371     /* If thumbnail talking is enabled, make an extra run to mark files with
 372        associated thumbnails, so we don't do unsuccessful spinups later. */
 373     if (global_settings.talk_file_clip)
 374         check_file_thumbnails(c); /* map .talk to ours */
 375
 376     return 0;
 377 }
 378
 379 int ft_enter(struct tree_context* c)
 380 {
 381     int rc = 0;
 382     char buf[MAX_PATH];
 383     struct entry *dircache = c->dircache;
 384     struct entry* file = &dircache[c->selected_item];
 385     bool reload_dir = false;
 386     bool start_wps = false;
 387     bool exit_func = false;
 388
 389     if (c->currdir[1])
 390         snprintf(buf,sizeof(buf),"%s/%s",c->currdir, file->name);
 391     else
 392         snprintf(buf,sizeof(buf),"/%s",file->name);
 393
 394     if (file->attr & ATTR_DIRECTORY) {
 395         memcpy(c->currdir, buf, sizeof(c->currdir));
 396         if ( c->dirlevel < MAX_DIR_LEVELS )
 397             c->selected_item_history[c->dirlevel] = c->selected_item;
 398         c->dirlevel++;
 399         c->selected_item=0;
 400     }
 401     else {
 402         int seed = current_tick;
 403         bool play = false;
 404         int start_index=0;
 405
 406         switch ( file->attr & FILE_ATTR_MASK ) {
 407             case FILE_ATTR_M3U:
 408                 play = ft_play_playlist(buf, c->currdir, file->name);
 409
 410                 if (play)
 411                 {
 412                     start_index = 0;
 413                 }
 414
 415                 break;
 416
 417             case FILE_ATTR_AUDIO:
 418                 if (bookmark_autoload(c->currdir))
 419                     break;
 420
 421                 splash(0, ID2P(LANG_WAIT));
 422
 423                 /* about to create a new current playlist...
 424                    allow user to cancel the operation */
 425                 if (!warn_on_pl_erase())
 426                     break;
 427
 428                 if (global_settings.party_mode && audio_status())
 429                 {
 430                     playlist_insert_track(NULL, buf,
 431                                           PLAYLIST_INSERT_LAST, true, true);
 432                     splash(HZ, ID2P(LANG_QUEUE_LAST));
 433                 }
 434                 else if (playlist_create(c->currdir, NULL) != -1)
 435                 {
 436                     start_index = ft_build_playlist(c, c->selected_item);
 437                     if (global_settings.playlist_shuffle)
 438                     {
 439                         start_index = playlist_shuffle(seed, start_index);
 440
 441                         /* when shuffling dir.: play all files
 442                            even if the file selected by user is
 443                            not the first one */
 444                         if (!global_settings.play_selected)
 445                             start_index = 0;
 446                     }
 447
 448                     playlist_start(start_index, 0);
 449                     play = true;
 450                 }
 451                 break;
 452
 453 #if CONFIG_TUNER
 454                 /* fmr preset file */
 455             case FILE_ATTR_FMR:
 456                 splash(0, ID2P(LANG_WAIT));
 457
 458                 /* Preset inside the default folder. */
 459                 if(!strncasecmp(FMPRESET_PATH, buf, strlen(FMPRESET_PATH)))
 460                 {
 461                     set_file(buf, global_settings.fmr_file, MAX_FILENAME);
 462                     radio_load_presets(global_settings.fmr_file);
 463                     if(!in_radio_screen())
 464                         radio_screen();
 465                 }
 466                 /*
 467                  * Preset outside default folder, we can choose such only
 468                  * if we are out of the radio screen, so the check for the
 469                  * radio status isn't neccessary
 470                  */
 471                 else
 472                 {
 473                     radio_load_presets(buf);
 474                     radio_screen();
 475                 }
 476
 477                 break;
 478 #endif
 479
 480
 481                 /* wps config file */
 482             case FILE_ATTR_WPS:
 483                 splash(0, ID2P(LANG_WAIT));
 484 #if LCD_DEPTH > 1
 485                 backdrop_unload(BACKDROP_SKIN_WPS);
 486 #endif
 487                 wps_data_load(SCREEN_MAIN, buf, true);
 488                 set_file(buf, (char *)global_settings.wps_file,
 489                          MAX_FILENAME);
 490                 settings_apply_skins();
 491                 break;
 492
 493 #if defined(HAVE_REMOTE_LCD) && (NB_SCREENS > 1)
 494                 /* remote-wps config file */
 495             case FILE_ATTR_RWPS:
 496                 splash(0, ID2P(LANG_WAIT));
 497 #if defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
 498                 remote_backdrop_unload(BACKDROP_SKIN_WPS);
 499 #endif
 500                 wps_data_load(SCREEN_REMOTE, buf, true);
 501                 set_file(buf, (char *)global_settings.rwps_file,
 502                          MAX_FILENAME);
 503                 settings_apply_skins();
 504                 break;
 505 #endif
 506
 507             case FILE_ATTR_CFG:
 508                 splash(0, ID2P(LANG_WAIT));
 509                 if (!settings_load_config(buf,true))
 510                     break;
 511                 /* do both steps seperately so that the redrawing after theme
 512                  * changing is independant of whether the theme has a custom ui
 513                  * vp or not */
 514                 send_event(GUI_EVENT_REFRESH, NULL);
 515                 /* for the statusbar */
 516                 send_event(GUI_EVENT_ACTIONUPDATE, (void*)true);
 517                 tree_drawlists();
 518                 splash(HZ, ID2P(LANG_SETTINGS_LOADED));
 519                 break;
 520
 521             case FILE_ATTR_BMARK:
 522                 splash(0, ID2P(LANG_WAIT));
 523                 bookmark_load(buf, false);
 524                 reload_dir = true;
 525                 break;
 526
 527             case FILE_ATTR_LNG:
 528                 splash(0, ID2P(LANG_WAIT));
 529                 if(!lang_load(buf)) {
 530                     set_file(buf, (char *)global_settings.lang_file,
 531                              MAX_FILENAME);
 532                     talk_init(); /* use voice of same language */
 533                     splash(HZ, ID2P(LANG_LANGUAGE_LOADED));
 534                 }
 535                 break;
 536
 537 #ifdef HAVE_LCD_BITMAP
 538             case FILE_ATTR_FONT:
 539                 splash(0, ID2P(LANG_WAIT));
 540                 font_load(buf);
 541                 set_file(buf, (char *)global_settings.font_file, MAX_FILENAME);
 542                 break;
 543
 544             case FILE_ATTR_KBD:
 545                 splash(0, ID2P(LANG_WAIT));
 546                 if (!load_kbd(buf))
 547                     splash(HZ, ID2P(LANG_KEYBOARD_LOADED));
 548                 set_file(buf, (char *)global_settings.kbd_file, MAX_FILENAME);
 549                 break;
 550 #endif
 551
 552 #ifndef SIMULATOR
 553                 /* firmware file */
 554             case FILE_ATTR_MOD:
 555                 splash(0, ID2P(LANG_WAIT));
 556                 rolo_load(buf);
 557                 break;
 558 #endif
 559
 560                 /* plugin file */
 561             case FILE_ATTR_ROCK:
 562             {
 563                 int ret;
 564                 if (global_settings.party_mode && audio_status()) {
 565                     splash(HZ, ID2P(LANG_PARTY_MODE));
 566                     break;
 567                 }
 568                 ret = plugin_load(buf,NULL);
 569                 switch (ret)
 570                 {
 571                     case PLUGIN_GOTO_WPS:
 572                         play = true;
 573                         break;
 574                     case PLUGIN_USB_CONNECTED:
 575                         if(*c->dirfilter > NUM_FILTER_MODES)
 576                             /* leave sub-browsers after usb, doing
 577                                otherwise might be confusing to the user */
 578                             exit_func = true;
 579                         else
 580                             reload_dir = true;
 581                         break;
 582                     /*
 583                     case PLUGIN_ERROR:
 584                     case PLUGIN_OK:
 585                     */
 586                     default:
 587                         break;
 588                 }
 589                 break;
 590             }
 591             case FILE_ATTR_CUE:
 592                 display_cuesheet_content(buf);
 593                 break;
 594
 595             default:
 596             {
 597                 const char* plugin;
 598
 599                 if (global_settings.party_mode && audio_status()) {
 600                     splash(HZ, ID2P(LANG_PARTY_MODE));
 601                     break;
 602                 }
 603
 604                 plugin = filetype_get_plugin(file);
 605                 if (plugin)
 606                 {
 607                     switch (plugin_load(plugin,buf))
 608                     {
 609                         case PLUGIN_USB_CONNECTED:
 610                             reload_dir = true;
 611                             break;
 612                         case PLUGIN_GOTO_WPS:
 613                             play = true;
 614                             break;
 615                         /*
 616                         case PLUGIN_OK:
 617                         case PLUGIN_ERROR:
 618                         */
 619                         default:
 620                             break;
 621                     }
 622                 }
 623                 break;
 624             }
 625         }
 626
 627         send_event(GUI_EVENT_REFRESH, tree_drawlists);
 628
 629         if ( play ) {
 630             /* the resume_index must always be the index in the
 631                shuffled list in case shuffle is enabled */
 632             global_status.resume_index = start_index;
 633             global_status.resume_offset = 0;
 634             status_save();
 635
 636             start_wps = true;
 637         }
 638         else {
 639             if (*c->dirfilter > NUM_FILTER_MODES &&
 640                 *c->dirfilter != SHOW_CFG &&
 641                 *c->dirfilter != SHOW_FONT &&
 642                 *c->dirfilter != SHOW_PLUGINS)
 643             {
 644                 exit_func = true;
 645             }
 646         }
 647     }
 648
 649     if (reload_dir)
 650         rc = 1;
 651     if (start_wps)
 652         rc = 2;
 653     if (exit_func)
 654         rc = 3;
 655
 656     return rc;
 657 }
 658
 659 int ft_exit(struct tree_context* c)
 660 {
 661     extern char lastfile[]; /* from tree.c */
 662     char buf[MAX_PATH];
 663     int rc = 0;
 664     bool exit_func = false;
 665
 666     int i = strlen(c->currdir);
 667     if (i>1) {
 668         while (c->currdir[i-1]!='/')
 669             i--;
 670         strcpy(buf,&c->currdir[i]);
 671         if (i==1)
 672             c->currdir[i]=0;
 673         else
 674             c->currdir[i-1]=0;
 675
 676         if (*c->dirfilter > NUM_FILTER_MODES && c->dirlevel < 1)
 677             exit_func = true;
 678
 679         c->dirlevel--;
 680         if ( c->dirlevel < MAX_DIR_LEVELS )
 681             c->selected_item=c->selected_item_history[c->dirlevel];
 682         else
 683             c->selected_item=0;
 684
 685         /* if undefined position */
 686         if (c->selected_item == -1)
 687             strcpy(lastfile, buf);
 688     }
 689     else
 690     {
 691         if (*c->dirfilter > NUM_FILTER_MODES && c->dirlevel < 1)
 692             exit_func = true;
 693     }
 694
 695     if (exit_func)
 696         rc = 3;
 697
 698     return rc;
 699 }