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