apps/bookmark.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  *
   9  * Copyright (C)2003 by Benjamin Metzler
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  17  * KIND, either express or implied.
  18  *
  19  ****************************************************************************/
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <stdbool.h>
  25
  26 #include "config.h"
  27 #include "action.h"
  28 #include "audio.h"
  29 #include "playlist.h"
  30 #include "settings.h"
  31 #include "tree.h"
  32 #include "bookmark.h"
  33 #include "system.h"
  34 #include "icons.h"
  35 #include "menu.h"
  36 #include "lang.h"
  37 #include "talk.h"
  38 #include "misc.h"
  39 #include "splash.h"
  40 #include "yesno.h"
  41 #include "list.h"
  42 #include "plugin.h"
  43 #include "backdrop.h"
  44 #include "file.h"
  45
  46 #define MAX_BOOKMARKS 10
  47 #define MAX_BOOKMARK_SIZE  350
  48 #define RECENT_BOOKMARK_FILE ROCKBOX_DIR "/most-recent.bmark"
  49
  50 /* Used to buffer bookmarks while displaying the bookmark list. */
  51 struct bookmark_list
  52 {
  53     const char* filename;
  54     size_t buffer_size;
  55     int start;
  56     int count;
  57     int total_count;
  58     bool show_dont_resume;
  59     bool reload;
  60     bool show_playlist_name;
  61     char* items[];
  62 };
  63
  64 static bool  add_bookmark(const char* bookmark_file_name, const char* bookmark,
  65                           bool most_recent);
  66 static bool  check_bookmark(const char* bookmark);
  67 static char* create_bookmark(void);
  68 static bool  delete_bookmark(const char* bookmark_file_name, int bookmark_id);
  69 static void  say_bookmark(const char* bookmark,
  70                           int bookmark_id, bool show_playlist_name);
  71 static bool play_bookmark(const char* bookmark);
  72 static bool  generate_bookmark_file_name(const char *in);
  73 static const char* skip_token(const char* s);
  74 static const char* int_token(const char* s, int* dest);
  75 static const char* long_token(const char* s, long* dest);
  76 static const char* bool_token(const char* s, bool* dest);
  77 static bool  parse_bookmark(const char *bookmark,
  78                             int *resume_index,
  79                             int *resume_offset,
  80                             int *resume_seed,
  81                             int *resume_first_index,
  82                             char* resume_file,
  83                             unsigned int resume_file_size,
  84                             long* ms,
  85                             int * repeat_mode,
  86                             bool *shuffle,
  87                             char* file_name);
  88 static int buffer_bookmarks(struct bookmark_list* bookmarks, int first_line);
  89 static char* get_bookmark_info(int list_index,
  90                                void* data,
  91                                char *buffer,
  92                                size_t buffer_len);
  93 static char* select_bookmark(const char* bookmark_file_name, bool show_dont_resume);
  94 static bool  system_check(void);
  95 static bool  write_bookmark(bool create_bookmark_file, const char *bookmark);
  96 static int   get_bookmark_count(const char* bookmark_file_name);
  97
  98 static char global_temp_buffer[MAX_PATH+1];
  99 /* File name created by generate_bookmark_file_name */
 100 static char global_bookmark_file_name[MAX_PATH];
 101 static char global_read_buffer[MAX_BOOKMARK_SIZE];
 102 /* Bookmark created by create_bookmark*/
 103 static char global_bookmark[MAX_BOOKMARK_SIZE];
 104 /* Filename from parsed bookmark (can be made local where needed) */
 105 static char global_filename[MAX_PATH];
 106
 107 /* ----------------------------------------------------------------------- */
 108 /* This is the interface function from the main menu.                      */
 109 /* ----------------------------------------------------------------------- */
 110 bool bookmark_create_menu(void)
 111 {
 112     write_bookmark(true, create_bookmark());
 113     return false;
 114 }
 115
 116 /* ----------------------------------------------------------------------- */
 117 /* This function acts as the load interface from the main menu             */
 118 /* This function determines the bookmark file name and then loads that file*/
 119 /* for the user.  The user can then select a bookmark to load.             */
 120 /* If no file/directory is currently playing, the menu item does not work. */
 121 /* ----------------------------------------------------------------------- */
 122 bool bookmark_load_menu(void)
 123 {
 124     if (system_check())
 125     {
 126         char* name = playlist_get_name(NULL, global_temp_buffer,
 127                                        sizeof(global_temp_buffer));
 128         if (generate_bookmark_file_name(name))
 129         {
 130             char* bookmark = select_bookmark(global_bookmark_file_name, false);
 131
 132             if (bookmark != NULL)
 133             {
 134                 return play_bookmark(bookmark);
 135             }
 136         }
 137     }
 138
 139     return false;
 140 }
 141
 142 /* ----------------------------------------------------------------------- */
 143 /* Gives the user a list of the Most Recent Bookmarks.  This is an         */
 144 /* interface function                                                      */
 145 /* ----------------------------------------------------------------------- */
 146 bool bookmark_mrb_load()
 147 {
 148     char* bookmark = select_bookmark(RECENT_BOOKMARK_FILE, false);
 149
 150     if (bookmark != NULL)
 151     {
 152         return play_bookmark(bookmark);
 153     }
 154
 155     return false;
 156 }
 157
 158 /* ----------------------------------------------------------------------- */
 159 /* This function handles an autobookmark creation.  This is an interface   */
 160 /* function.                                                               */
 161 /* ----------------------------------------------------------------------- */
 162 bool bookmark_autobookmark(void)
 163 {
 164     char*  bookmark;
 165     if (!system_check())
 166         return false;
 167
 168     audio_pause();    /* first pause playback */
 169     bookmark = create_bookmark();
 170     /* Workaround for inability to speak when paused: all callers will
 171        just do audio_stop() when we return, so we can do it right
 172        away. This makes it possible to speak the "Create a Bookmark?"
 173        prompt and the "Bookmark Created" splash. */
 174     audio_stop();
 175     switch (global_settings.autocreatebookmark)
 176     {
 177         case BOOKMARK_YES:
 178             return write_bookmark(true, bookmark);
 179
 180         case BOOKMARK_NO:
 181             return false;
 182
 183         case BOOKMARK_RECENT_ONLY_YES:
 184             return write_bookmark(false, bookmark);
 185     }
 186 #ifdef HAVE_LCD_BITMAP
 187     const char *lines[]={ID2P(LANG_AUTO_BOOKMARK_QUERY)};
 188     const struct text_message message={lines, 1};
 189 #else
 190     const char *lines[]={ID2P(LANG_AUTO_BOOKMARK_QUERY),
 191                             str(LANG_CONFIRM_WITH_BUTTON)};
 192     const struct text_message message={lines, 2};
 193 #endif
 194 #if LCD_DEPTH > 1
 195     show_main_backdrop(); /* switch to main backdrop as we may come from wps */
 196 #endif
 197 #if defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
 198     show_remote_main_backdrop();
 199 #endif
 200     if(gui_syncyesno_run(&message, NULL, NULL)==YESNO_YES)
 201     {
 202         if (global_settings.autocreatebookmark == BOOKMARK_RECENT_ONLY_ASK)
 203             return write_bookmark(false, bookmark);
 204         else
 205             return write_bookmark(true, bookmark);
 206     }
 207     return false;
 208 }
 209
 210 /* ----------------------------------------------------------------------- */
 211 /* This function takes the current current resume information and writes   */
 212 /* that to the beginning of the bookmark file.                             */
 213 /* This file will contain N number of bookmarks in the following format:   */
 214 /* resume_index*resume_offset*resume_seed*resume_first_index*              */
 215 /* resume_file*milliseconds*MP3 Title*                                     */
 216 /* ------------------------------------------------------------------------*/
 217 static bool write_bookmark(bool create_bookmark_file, const char *bookmark)
 218 {
 219     bool   success=false;
 220     if (!bookmark)
 221        return false; /* something didn't happen correctly, do nothing */
 222
 223     if (global_settings.usemrb)
 224         success = add_bookmark(RECENT_BOOKMARK_FILE, bookmark, true);
 225
 226
 227     /* writing the bookmark */
 228     if (create_bookmark_file)
 229     {
 230         char* name = playlist_get_name(NULL, global_temp_buffer,
 231                                        sizeof(global_temp_buffer));
 232         if (generate_bookmark_file_name(name))
 233         {
 234             success = add_bookmark(global_bookmark_file_name, bookmark, false);
 235         }
 236     }
 237
 238     splash(HZ, success ? ID2P(LANG_BOOKMARK_CREATE_SUCCESS)
 239            : ID2P(LANG_BOOKMARK_CREATE_FAILURE));
 240
 241     return true;
 242 }
 243
 244 /* ----------------------------------------------------------------------- */
 245 /* This function adds a bookmark to a file.                                */
 246 /* ------------------------------------------------------------------------*/
 247 static bool add_bookmark(const char* bookmark_file_name, const char* bookmark,
 248                          bool most_recent)
 249 {
 250     int    temp_bookmark_file = 0;
 251     int    bookmark_file = 0;
 252     int    bookmark_count = 0;
 253     char*  playlist = NULL;
 254     char*  cp;
 255     char*  tmp;
 256     int    len = 0;
 257     bool   unique = false;
 258
 259     /* Opening up a temp bookmark file */
 260     snprintf(global_temp_buffer, sizeof(global_temp_buffer),
 261              "%s.tmp", bookmark_file_name);
 262     temp_bookmark_file = open(global_temp_buffer,
 263                               O_WRONLY | O_CREAT | O_TRUNC);
 264     if (temp_bookmark_file < 0)
 265         return false; /* can't open the temp file */
 266
 267     if (most_recent && (global_settings.usemrb == BOOKMARK_UNIQUE_ONLY))
 268     {
 269         playlist = strchr(bookmark,'/');
 270         cp = strrchr(bookmark,';');
 271         len = cp - playlist;
 272         unique = true;
 273     }
 274
 275     /* Writing the new bookmark to the begining of the temp file */
 276     write(temp_bookmark_file, bookmark, strlen(bookmark));
 277     write(temp_bookmark_file, "\n", 1);
 278     bookmark_count++;
 279
 280     /* Reading in the previous bookmarks and writing them to the temp file */
 281     bookmark_file = open(bookmark_file_name, O_RDONLY);
 282     if (bookmark_file >= 0)
 283     {
 284         while (read_line(bookmark_file, global_read_buffer,
 285                          sizeof(global_read_buffer)) > 0)
 286         {
 287             /* The MRB has a max of MAX_BOOKMARKS in it */
 288             /* This keeps it from getting too large */
 289             if (most_recent && (bookmark_count >= MAX_BOOKMARKS))
 290                 break;
 291
 292             cp  = strchr(global_read_buffer,'/');
 293             tmp = strrchr(global_read_buffer,';');
 294             if (check_bookmark(global_read_buffer) &&
 295                (!unique || len != tmp -cp || strncmp(playlist,cp,len)))
 296             {
 297                 bookmark_count++;
 298                 write(temp_bookmark_file, global_read_buffer,
 299                       strlen(global_read_buffer));
 300                 write(temp_bookmark_file, "\n", 1);
 301             }
 302         }
 303         close(bookmark_file);
 304     }
 305     close(temp_bookmark_file);
 306
 307     remove(bookmark_file_name);
 308     rename(global_temp_buffer, bookmark_file_name);
 309
 310     return true;
 311 }
 312
 313
 314 /* ----------------------------------------------------------------------- */
 315 /* This function takes the system resume data and formats it into a valid  */
 316 /* bookmark.                                                               */
 317 /* ----------------------------------------------------------------------- */
 318 static char* create_bookmark()
 319 {
 320     int resume_index = 0;
 321     char *file;
 322
 323     if (!system_check())
 324         return NULL; /* something didn't happen correctly, do nothing */
 325
 326     /* grab the currently playing track */
 327     struct mp3entry *id3 = audio_current_track();
 328     if(!id3)
 329         return NULL;
 330
 331     /* Get some basic resume information */
 332     /* queue_resume and queue_resume_index are not used and can be ignored.*/
 333     playlist_get_resume_info(&resume_index);
 334
 335     /* Get the currently playing file minus the path */
 336     /* This is used when displaying the available bookmarks */
 337     file = strrchr(id3->path,'/');
 338     if(NULL == file)
 339         return NULL;
 340
 341     /* create the bookmark */
 342     snprintf(global_bookmark, sizeof(global_bookmark),
 343              "%d;%ld;%d;%d;%ld;%d;%d;%s;%s",
 344              resume_index,
 345              id3->offset,
 346              playlist_get_seed(NULL),
 347              0,
 348              id3->elapsed,
 349              global_settings.repeat_mode,
 350              global_settings.playlist_shuffle,
 351              playlist_get_name(NULL, global_temp_buffer,
 352                 sizeof(global_temp_buffer)),
 353              file+1);
 354
 355     /* checking to see if the bookmark is valid */
 356     if (check_bookmark(global_bookmark))
 357         return global_bookmark;
 358     else
 359         return NULL;
 360 }
 361
 362 static bool check_bookmark(const char* bookmark)
 363 {
 364     return parse_bookmark(bookmark,
 365                           NULL,NULL,NULL, NULL,
 366                           NULL,0,NULL,NULL,
 367                           NULL, NULL);
 368 }
 369
 370 /* ----------------------------------------------------------------------- */
 371 /* This function will determine if an autoload is necessary.  This is an   */
 372 /* interface function.                                                     */
 373 /* ------------------------------------------------------------------------*/
 374 bool bookmark_autoload(const char* file)
 375 {
 376     if(global_settings.autoloadbookmark == BOOKMARK_NO)
 377         return false;
 378
 379     /*Checking to see if a bookmark file exists.*/
 380     if(!generate_bookmark_file_name(file))
 381     {
 382         return false;
 383     }
 384
 385     if(!file_exists(global_bookmark_file_name))
 386         return false;
 387
 388     if(global_settings.autoloadbookmark == BOOKMARK_YES)
 389     {
 390         return bookmark_load(global_bookmark_file_name, true);
 391     }
 392     else
 393     {
 394         char* bookmark = select_bookmark(global_bookmark_file_name, true);
 395
 396         if (bookmark != NULL)
 397         {
 398             if (!play_bookmark(bookmark))
 399             {
 400                 /* Selected bookmark not found. */
 401                 splash(HZ*2, ID2P(LANG_NOTHING_TO_RESUME));
 402             }
 403
 404             /* Act as if autoload was done even if it failed, since the
 405              * user did make an active selection.
 406              */
 407             return true;
 408         }
 409
 410         return false;
 411     }
 412 }
 413
 414 /* ----------------------------------------------------------------------- */
 415 /* This function loads the bookmark information into the resume memory.    */
 416 /* This is an interface function.                                          */
 417 /* ------------------------------------------------------------------------*/
 418 bool bookmark_load(const char* file, bool autoload)
 419 {
 420     int  fd;
 421     char* bookmark = NULL;
 422
 423     if(autoload)
 424     {
 425         fd = open(file, O_RDONLY);
 426         if(fd >= 0)
 427         {
 428             if(read_line(fd, global_read_buffer, sizeof(global_read_buffer)) > 0)
 429                 bookmark=global_read_buffer;
 430             close(fd);
 431         }
 432     }
 433     else
 434     {
 435         /* This is not an auto-load, so list the bookmarks */
 436         bookmark = select_bookmark(file, false);
 437     }
 438
 439     if (bookmark != NULL)
 440     {
 441         if (!play_bookmark(bookmark))
 442         {
 443             /* Selected bookmark not found. */
 444             if (!autoload)
 445             {
 446                 splash(HZ*2, ID2P(LANG_NOTHING_TO_RESUME));
 447             }
 448
 449             return false;
 450         }
 451     }
 452
 453     return true;
 454 }
 455
 456
 457 static int get_bookmark_count(const char* bookmark_file_name)
 458 {
 459     int read_count = 0;
 460     int file = open(bookmark_file_name, O_RDONLY);
 461
 462     if(file < 0)
 463         return -1;
 464
 465     while(read_line(file, global_read_buffer, sizeof(global_read_buffer)) > 0)
 466     {
 467         read_count++;
 468     }
 469
 470     close(file);
 471     return read_count;
 472 }
 473
 474 static int buffer_bookmarks(struct bookmark_list* bookmarks, int first_line)
 475 {
 476     char* dest = ((char*) bookmarks) + bookmarks->buffer_size - 1;
 477     int read_count = 0;
 478     int file = open(bookmarks->filename, O_RDONLY);
 479
 480     if (file < 0)
 481     {
 482         return -1;
 483     }
 484
 485     if ((first_line != 0) && ((size_t) filesize(file) < bookmarks->buffer_size
 486             - sizeof(*bookmarks) - (sizeof(char*) * bookmarks->total_count)))
 487     {
 488         /* Entire file fits in buffer */
 489         first_line = 0;
 490     }
 491
 492     bookmarks->start = first_line;
 493     bookmarks->count = 0;
 494     bookmarks->reload = false;
 495
 496     while(read_line(file, global_read_buffer, sizeof(global_read_buffer)) > 0)
 497     {
 498         read_count++;
 499
 500         if (read_count >= first_line)
 501         {
 502             dest -= strlen(global_read_buffer) + 1;
 503
 504             if (dest < ((char*) bookmarks) + sizeof(*bookmarks)
 505                 + (sizeof(char*) * (bookmarks->count + 1)))
 506             {
 507                 break;
 508             }
 509
 510             strcpy(dest, global_read_buffer);
 511             bookmarks->items[bookmarks->count] = dest;
 512             bookmarks->count++;
 513         }
 514     }
 515
 516     close(file);
 517     return bookmarks->start + bookmarks->count;
 518 }
 519
 520 static char* get_bookmark_info(int list_index,
 521                                void* data,
 522                                char *buffer,
 523                                size_t buffer_len)
 524 {
 525     struct bookmark_list* bookmarks = (struct bookmark_list*) data;
 526     int     index = list_index / 2;
 527     int     resume_index = 0;
 528     long    resume_time = 0;
 529     bool    shuffle = false;
 530
 531     if (bookmarks->show_dont_resume)
 532     {
 533         if (index == 0)
 534         {
 535             return list_index % 2 == 0
 536                 ? (char*) str(LANG_BOOKMARK_DONT_RESUME) : " ";
 537         }
 538
 539         index--;
 540     }
 541
 542     if (bookmarks->reload || (index >= bookmarks->start + bookmarks->count)
 543         || (index < bookmarks->start))
 544     {
 545         int read_index = index;
 546
 547         /* Using count as a guide on how far to move could possibly fail
 548          * sometimes. Use byte count if that is a problem?
 549          */
 550
 551         if (read_index != 0)
 552         {
 553             /* Move count * 3 / 4 items in the direction the user is moving,
 554              * but don't go too close to the end.
 555              */
 556             int offset = bookmarks->count;
 557             int max = bookmarks->total_count - (bookmarks->count / 2);
 558
 559             if (read_index < bookmarks->start)
 560             {
 561                 offset *= 3;
 562             }
 563
 564             read_index = index - offset / 4;
 565
 566             if (read_index > max)
 567             {
 568                 read_index = max;
 569             }
 570
 571             if (read_index < 0)
 572             {
 573                 read_index = 0;
 574             }
 575         }
 576
 577         if (buffer_bookmarks(bookmarks, read_index) <= index)
 578         {
 579             return "";
 580         }
 581     }
 582
 583     if (!parse_bookmark(bookmarks->items[index - bookmarks->start],
 584         &resume_index, NULL, NULL, NULL, global_temp_buffer,
 585         sizeof(global_temp_buffer), &resume_time, NULL, &shuffle,
 586         global_filename))
 587     {
 588         return list_index % 2 == 0 ? (char*) str(LANG_BOOKMARK_INVALID) : " ";
 589     }
 590
 591     if (list_index % 2 == 0)
 592     {
 593         char *name;
 594         char *format;
 595         int len = strlen(global_temp_buffer);
 596
 597         if (bookmarks->show_playlist_name && len > 0)
 598         {
 599             name = global_temp_buffer;
 600             len--;
 601
 602             if (name[len] != '/')
 603             {
 604                 strrsplt(name, '.');
 605             }
 606             else if (len > 1)
 607             {
 608                 name[len] = '\0';
 609             }
 610
 611             if (len > 1)
 612             {
 613                 name = strrsplt(name, '/');
 614             }
 615
 616             format = "%s : %s";
 617         }
 618         else
 619         {
 620             name = global_filename;
 621             format = "%s";
 622         }
 623
 624         strrsplt(global_filename, '.');
 625         snprintf(buffer, buffer_len, format, name, global_filename);
 626         return buffer;
 627     }
 628     else
 629     {
 630         char time_buf[32];
 631
 632         format_time(time_buf, sizeof(time_buf), resume_time);
 633         snprintf(buffer, buffer_len, "%s, %d%s", time_buf, resume_index + 1,
 634             shuffle ? (char*) str(LANG_BOOKMARK_SHUFFLE) : "");
 635         return buffer;
 636     }
 637 }
 638
 639 static int bookmark_list_voice_cb(int list_index, void* data)
 640 {
 641     struct bookmark_list* bookmarks = (struct bookmark_list*) data;
 642     int index = list_index / 2;
 643
 644     if (bookmarks->show_dont_resume)
 645     {
 646         if (index == 0)
 647             return talk_id(LANG_BOOKMARK_DONT_RESUME, false);
 648         index--;
 649     }
 650     say_bookmark(bookmarks->items[index - bookmarks->start], index,
 651                  bookmarks->show_playlist_name);
 652     return 0;
 653 }
 654
 655 /* ----------------------------------------------------------------------- */
 656 /* This displays a the bookmarks in a file and allows the user to          */
 657 /* select one to play.                                                     */
 658 /* ------------------------------------------------------------------------*/
 659 static char* select_bookmark(const char* bookmark_file_name, bool show_dont_resume)
 660 {
 661     struct bookmark_list* bookmarks;
 662     struct gui_synclist list;
 663     int item = 0;
 664     int action;
 665     size_t size;
 666     bool exit = false;
 667     bool refresh = true;
 668
 669     bookmarks = plugin_get_buffer(&size);
 670     bookmarks->buffer_size = size;
 671     bookmarks->show_dont_resume = show_dont_resume;
 672     bookmarks->filename = bookmark_file_name;
 673     bookmarks->start = 0;
 674     bookmarks->show_playlist_name
 675         = strcmp(bookmark_file_name, RECENT_BOOKMARK_FILE) == 0;
 676     gui_synclist_init(&list, &get_bookmark_info, (void*) bookmarks, false, 2, NULL);
 677     if(global_settings.talk_menu)
 678         gui_synclist_set_voice_callback(&list, bookmark_list_voice_cb);
 679     gui_synclist_set_title(&list, str(LANG_BOOKMARK_SELECT_BOOKMARK),
 680         Icon_Bookmark);
 681
 682     while (!exit)
 683     {
 684
 685         if (refresh)
 686         {
 687             int count = get_bookmark_count(bookmark_file_name);
 688             bookmarks->total_count = count;
 689
 690             if (bookmarks->total_count < 1)
 691             {
 692                 /* No more bookmarks, delete file and exit */
 693                 splash(HZ, ID2P(LANG_BOOKMARK_LOAD_EMPTY));
 694                 remove(bookmark_file_name);
 695                 return NULL;
 696             }
 697
 698             if (bookmarks->show_dont_resume)
 699             {
 700                 count++;
 701                 item++;
 702             }
 703
 704             gui_synclist_set_nb_items(&list, count * 2);
 705
 706             if (item >= count)
 707             {
 708                 /* Selected item has been deleted */
 709                 item = count - 1;
 710                 gui_synclist_select_item(&list, item * 2);
 711             }
 712
 713             buffer_bookmarks(bookmarks, bookmarks->start);
 714             gui_synclist_draw(&list);
 715             cond_talk_ids_fq(VOICE_EXT_BMARK);
 716             gui_synclist_speak_item(&list);
 717             refresh = false;
 718         }
 719
 720         list_do_action(CONTEXT_BOOKMARKSCREEN, HZ / 2,
 721                        &list, &action, LIST_WRAP_UNLESS_HELD);
 722         item = gui_synclist_get_sel_pos(&list) / 2;
 723
 724         if (bookmarks->show_dont_resume)
 725         {
 726             item--;
 727         }
 728
 729         if (action == ACTION_STD_CONTEXT)
 730         {
 731             MENUITEM_STRINGLIST(menu_items, ID2P(LANG_BOOKMARK_CONTEXT_MENU),
 732                 NULL, ID2P(LANG_BOOKMARK_CONTEXT_RESUME),
 733                 ID2P(LANG_BOOKMARK_CONTEXT_DELETE));
 734             static const int menu_actions[] =
 735             {
 736                 ACTION_STD_OK, ACTION_BMS_DELETE
 737             };
 738             int selection = do_menu(&menu_items, NULL, NULL, false);
 739
 740             refresh = true;
 741
 742             if (selection >= 0 && selection <=
 743                 (int) (sizeof(menu_actions) / sizeof(menu_actions[0])))
 744             {
 745                 action = menu_actions[selection];
 746             }
 747         }
 748
 749         switch (action)
 750         {
 751         case ACTION_STD_OK:
 752             if (item >= 0)
 753             {
 754                 talk_shutup();
 755                 return bookmarks->items[item - bookmarks->start];
 756             }
 757
 758             /* Else fall through */
 759
 760         case ACTION_TREE_WPS:
 761         case ACTION_STD_CANCEL:
 762             exit = true;
 763             break;
 764
 765         case ACTION_BMS_DELETE:
 766             if (item >= 0)
 767             {
 768                 delete_bookmark(bookmark_file_name, item);
 769                 bookmarks->reload = true;
 770                 refresh = true;
 771             }
 772             break;
 773
 774         default:
 775             if (default_event_handler(action) == SYS_USB_CONNECTED)
 776             {
 777                 exit = true;
 778             }
 779
 780             break;
 781         }
 782     }
 783
 784     talk_shutup();
 785     return NULL;
 786 }
 787
 788 /* ----------------------------------------------------------------------- */
 789 /* This function takes a location in a bookmark file and deletes that      */
 790 /* bookmark.                                                               */
 791 /* ------------------------------------------------------------------------*/
 792 static bool delete_bookmark(const char* bookmark_file_name, int bookmark_id)
 793 {
 794     int temp_bookmark_file = 0;
 795     int bookmark_file = 0;
 796     int bookmark_count = 0;
 797
 798     /* Opening up a temp bookmark file */
 799     snprintf(global_temp_buffer, sizeof(global_temp_buffer),
 800              "%s.tmp", bookmark_file_name);
 801     temp_bookmark_file = open(global_temp_buffer,
 802                               O_WRONLY | O_CREAT | O_TRUNC);
 803
 804     if (temp_bookmark_file < 0)
 805         return false; /* can't open the temp file */
 806
 807     /* Reading in the previous bookmarks and writing them to the temp file */
 808     bookmark_file = open(bookmark_file_name, O_RDONLY);
 809     if (bookmark_file >= 0)
 810     {
 811         while (read_line(bookmark_file, global_read_buffer,
 812                          sizeof(global_read_buffer)) > 0)
 813         {
 814             if (bookmark_id != bookmark_count)
 815             {
 816                 write(temp_bookmark_file, global_read_buffer,
 817                       strlen(global_read_buffer));
 818                 write(temp_bookmark_file, "\n", 1);
 819             }
 820             bookmark_count++;
 821         }
 822         close(bookmark_file);
 823     }
 824     close(temp_bookmark_file);
 825
 826     remove(bookmark_file_name);
 827     rename(global_temp_buffer, bookmark_file_name);
 828
 829     return true;
 830 }
 831
 832 /* ----------------------------------------------------------------------- */
 833 /* This function parses a bookmark, says the voice UI part of it.          */
 834 /* ------------------------------------------------------------------------*/
 835 static void say_bookmark(const char* bookmark,
 836                          int bookmark_id, bool show_playlist_name)
 837 {
 838     int resume_index;
 839     long ms;
 840     bool playlist_shuffle = false;
 841     bool is_dir;
 842
 843     if (!parse_bookmark(bookmark, &resume_index, NULL, NULL, NULL,
 844                         global_temp_buffer,sizeof(global_temp_buffer),
 845                         &ms, NULL, &playlist_shuffle,
 846                         global_filename))
 847     {
 848         talk_id(LANG_BOOKMARK_INVALID, false);
 849         return;
 850     }
 851
 852     talk_number(bookmark_id + 1, false);
 853
 854     is_dir = (global_temp_buffer[0]
 855               && global_temp_buffer[strlen(global_temp_buffer)-1] == '/');
 856 #if CONFIG_CODEC == SWCODEC
 857     /* HWCODEC cannot enqueue voice file entries and .talk thumbnails
 858        together, because there is no guarantee that the same mp3
 859        parameters are used. */
 860     if(show_playlist_name)
 861     {   /* It's useful to know which playlist this is */
 862         if(is_dir)
 863             talk_dir_or_spell(global_temp_buffer,
 864                               TALK_IDARRAY(VOICE_DIR), true);
 865         else talk_file_or_spell(NULL, global_temp_buffer,
 866                                 TALK_IDARRAY(LANG_PLAYLIST), true);
 867     }
 868 #else
 869     (void)show_playlist_name;
 870 #endif
 871
 872     if(playlist_shuffle)
 873         talk_id(LANG_SHUFFLE, true);
 874
 875     talk_id(VOICE_BOOKMARK_SELECT_INDEX_TEXT, true);
 876     talk_number(resume_index + 1, true);
 877     talk_id(LANG_TIME, true);
 878     talk_value(ms / 1000, UNIT_TIME, true);
 879
 880 #if CONFIG_CODEC == SWCODEC
 881     /* Track filename */
 882     if(is_dir)
 883         talk_file_or_spell(global_temp_buffer, global_filename,
 884                            TALK_IDARRAY(VOICE_FILE), true);
 885     else
 886     {   /* Unfortunately if this is a playlist, we do not know in which
 887            directory the file is and therefore cannot find the track's
 888            .talk file. */
 889         talk_id(VOICE_FILE, true);
 890         talk_spell(global_filename, true);
 891     }
 892 #endif
 893 }
 894
 895 /* ----------------------------------------------------------------------- */
 896 /* This function parses a bookmark and then plays it.                      */
 897 /* ------------------------------------------------------------------------*/
 898 static bool play_bookmark(const char* bookmark)
 899 {
 900     int index;
 901     int offset;
 902     int seed;
 903
 904     if (parse_bookmark(bookmark,
 905                        &index,
 906                        &offset,
 907                        &seed,
 908                        NULL,
 909                        global_temp_buffer,
 910                        sizeof(global_temp_buffer),
 911                        NULL,
 912                        &global_settings.repeat_mode,
 913                        &global_settings.playlist_shuffle,
 914                        global_filename))
 915     {
 916         return bookmark_play(global_temp_buffer, index, offset, seed,
 917             global_filename);
 918     }
 919
 920     return false;
 921 }
 922
 923 static const char* skip_token(const char* s)
 924 {
 925     while (*s && *s != ';')
 926     {
 927         s++;
 928     }
 929
 930     if (*s)
 931     {
 932         s++;
 933     }
 934
 935     return s;
 936 }
 937
 938 static const char* int_token(const char* s, int* dest)
 939 {
 940     if (dest != NULL)
 941     {
 942         *dest = atoi(s);
 943     }
 944
 945     return skip_token(s);
 946 }
 947
 948 static const char* long_token(const char* s, long* dest)
 949 {
 950     if (dest != NULL)
 951     {
 952         *dest = atoi(s);    /* Should be atol, but we don't have it. */
 953     }
 954
 955     return skip_token(s);
 956 }
 957
 958 static const char* bool_token(const char* s, bool* dest)
 959 {
 960     if (dest != NULL)
 961     {
 962         *dest = atoi(s) != 0;
 963     }
 964
 965     return skip_token(s);
 966 }
 967
 968 /* ----------------------------------------------------------------------- */
 969 /* This function takes a bookmark and parses it.  This function also       */
 970 /* validates the bookmark.  Passing in NULL for an output variable         */
 971 /* indicates that value is not requested.                                  */
 972 /* ----------------------------------------------------------------------- */
 973 static bool parse_bookmark(const char *bookmark,
 974                            int *resume_index,
 975                            int *resume_offset,
 976                            int *resume_seed,
 977                            int *resume_first_index,
 978                            char* resume_file,
 979                            unsigned int resume_file_size,
 980                            long* ms,
 981                            int * repeat_mode, bool *shuffle,
 982                            char* file_name)
 983 {
 984     const char* s = bookmark;
 985     const char* end;
 986
 987     s = int_token(s,  resume_index);
 988     s = int_token(s,  resume_offset);
 989     s = int_token(s,  resume_seed);
 990     s = int_token(s,  resume_first_index);
 991     s = long_token(s, ms);
 992     s = int_token(s,  repeat_mode);
 993     s = bool_token(s, shuffle);
 994
 995     if (*s == 0)
 996     {
 997         return false;
 998     }
 999
1000     end = strchr(s, ';');
1001
1002     if (resume_file != NULL)
1003     {
1004         size_t len = (end == NULL) ? strlen(s) : (size_t) (end - s);
1005
1006         len = MIN(resume_file_size - 1, len);
1007         strncpy(resume_file, s, len);
1008         resume_file[len] = 0;
1009     }
1010
1011     if (end != NULL && file_name != NULL)
1012     {
1013         end++;
1014         strncpy(file_name, end, MAX_PATH - 1);
1015         file_name[MAX_PATH - 1] = 0;
1016     }
1017
1018     return true;
1019 }
1020
1021 /* ----------------------------------------------------------------------- */
1022 /* This function is used by multiple functions and is used to generate a   */
1023 /* bookmark named based off of the input.                                  */
1024 /* Changing this function could result in how the bookmarks are stored.    */
1025 /* it would be here that the centralized/decentralized bookmark code       */
1026 /* could be placed.                                                        */
1027 /* ----------------------------------------------------------------------- */
1028 static bool generate_bookmark_file_name(const char *in)
1029 {
1030     int len = strlen(in);
1031
1032     /* if this is a root dir MP3, rename the bookmark file root_dir.bmark */
1033     /* otherwise, name it based on the in variable */
1034     if (!strcmp("/", in))
1035         strcpy(global_bookmark_file_name, "/root_dir.bmark");
1036     else
1037     {
1038 #ifdef HAVE_MULTIVOLUME
1039         /* The "root" of an extra volume need special handling too. */
1040         bool volume_root = (strip_volume(in, global_bookmark_file_name) &&
1041             !strcmp("/", global_bookmark_file_name));
1042 #endif
1043
1044         strcpy(global_bookmark_file_name, in);
1045         if(global_bookmark_file_name[len-1] == '/')
1046             len--;
1047 #ifdef HAVE_MULTIVOLUME
1048         if (volume_root)
1049             strcpy(&global_bookmark_file_name[len], "/volume_dir.bmark");
1050         else
1051 #endif
1052             strcpy(&global_bookmark_file_name[len], ".bmark");
1053     }
1054
1055     return true;
1056 }
1057
1058 /* ----------------------------------------------------------------------- */
1059 /* Returns true if a bookmark file exists for the current playlist         */
1060 /* ----------------------------------------------------------------------- */
1061 bool bookmark_exist(void)
1062 {
1063     bool exist=false;
1064
1065     if(system_check())
1066     {
1067         char* name = playlist_get_name(NULL, global_temp_buffer,
1068                                        sizeof(global_temp_buffer));
1069         if (generate_bookmark_file_name(name))
1070         {
1071             exist = file_exists(global_bookmark_file_name);
1072         }
1073     }
1074
1075     return exist;
1076 }
1077
1078 /* ----------------------------------------------------------------------- */
1079 /* Checks the current state of the system and returns if it is in a        */
1080 /* bookmarkable state.                                                     */
1081 /* ----------------------------------------------------------------------- */
1082 /* Inputs:                                                                 */
1083 /* ----------------------------------------------------------------------- */
1084 /* Outputs:                                                                */
1085 /* return bool:  Indicates if the system was in a bookmarkable state       */
1086 /* ----------------------------------------------------------------------- */
1087 static bool system_check(void)
1088 {
1089     int resume_index = 0;
1090
1091     if (!(audio_status() && audio_current_track()))
1092     {
1093         /* no track playing */
1094         return false;
1095     }
1096
1097     /* Checking to see if playing a queued track */
1098     if (playlist_get_resume_info(&resume_index) == -1)
1099     {
1100         /* something bad happened while getting the queue information */
1101         return false;
1102     }
1103     else if (playlist_modified(NULL))
1104     {
1105         /* can't bookmark while in the queue */
1106         return false;
1107     }
1108
1109     return true;
1110 }
1111