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rockbox/apps/bookmark.c
Daniel Stenberg 2acc0ac542 Updated our source code header to explicitly mention that we are GPL v2 or 
later. We still need to hunt down snippets used that are not. 1324 modified
files...
http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
2008-06-28 18:10:04 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C)2003 by Benjamin Metzler
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include "config.h"
#include "action.h"
#include "audio.h"
#include "playlist.h"
#include "settings.h"
#include "tree.h"
#include "bookmark.h"
#include "system.h"
#include "icons.h"
#include "menu.h"
#include "lang.h"
#include "talk.h"
#include "misc.h"
#include "splash.h"
#include "yesno.h"
#include "list.h"
#include "plugin.h"
#include "backdrop.h"
#include "file.h"
#include "statusbar.h"
#define MAX_BOOKMARKS 10
#define MAX_BOOKMARK_SIZE 350
#define RECENT_BOOKMARK_FILE ROCKBOX_DIR "/most-recent.bmark"
/* Used to buffer bookmarks while displaying the bookmark list. */
struct bookmark_list
{
const char* filename;
size_t buffer_size;
int start;
int count;
int total_count;
bool show_dont_resume;
bool reload;
bool show_playlist_name;
char* items[];
};
static bool add_bookmark(const char* bookmark_file_name, const char* bookmark,
bool most_recent);
static bool check_bookmark(const char* bookmark);
static char* create_bookmark(void);
static bool delete_bookmark(const char* bookmark_file_name, int bookmark_id);
static void say_bookmark(const char* bookmark,
int bookmark_id);
static bool play_bookmark(const char* bookmark);
static bool generate_bookmark_file_name(const char *in);
static const char* skip_token(const char* s);
static const char* int_token(const char* s, int* dest);
static const char* long_token(const char* s, long* dest);
static const char* bool_token(const char* s, bool* dest);
static bool parse_bookmark(const char *bookmark,
int *resume_index,
int *resume_offset,
int *resume_seed,
int *resume_first_index,
char* resume_file,
unsigned int resume_file_size,
long* ms,
int * repeat_mode,
bool *shuffle,
char* file_name);
static int buffer_bookmarks(struct bookmark_list* bookmarks, int first_line);
static char* get_bookmark_info(int list_index,
void* data,
char *buffer,
size_t buffer_len);
static char* select_bookmark(const char* bookmark_file_name, bool show_dont_resume);
static bool system_check(void);
static bool write_bookmark(bool create_bookmark_file);
static int get_bookmark_count(const char* bookmark_file_name);
static char global_temp_buffer[MAX_PATH+1];
/* File name created by generate_bookmark_file_name */
static char global_bookmark_file_name[MAX_PATH];
static char global_read_buffer[MAX_BOOKMARK_SIZE];
/* Bookmark created by create_bookmark*/
static char global_bookmark[MAX_BOOKMARK_SIZE];
/* Filename from parsed bookmark (can be made local where needed) */
static char global_filename[MAX_PATH];
/* ----------------------------------------------------------------------- */
/* This is the interface function from the main menu. */
/* ----------------------------------------------------------------------- */
bool bookmark_create_menu(void)
{
write_bookmark(true);
return false;
}
/* ----------------------------------------------------------------------- */
/* This function acts as the load interface from the main menu */
/* This function determines the bookmark file name and then loads that file*/
/* for the user. The user can then select a bookmark to load. */
/* If no file/directory is currently playing, the menu item does not work. */
/* ----------------------------------------------------------------------- */
bool bookmark_load_menu(void)
{
if (system_check())
{
char* name = playlist_get_name(NULL, global_temp_buffer,
sizeof(global_temp_buffer));
if (generate_bookmark_file_name(name))
{
char* bookmark = select_bookmark(global_bookmark_file_name, false);
if (bookmark != NULL)
{
return play_bookmark(bookmark);
}
}
}
return false;
}
/* ----------------------------------------------------------------------- */
/* Gives the user a list of the Most Recent Bookmarks. This is an */
/* interface function */
/* ----------------------------------------------------------------------- */
bool bookmark_mrb_load()
{
char* bookmark = select_bookmark(RECENT_BOOKMARK_FILE, false);
if (bookmark != NULL)
{
return play_bookmark(bookmark);
}
return false;
}
/* ----------------------------------------------------------------------- */
/* This function handles an autobookmark creation. This is an interface */
/* function. */
/* ----------------------------------------------------------------------- */
bool bookmark_autobookmark(void)
{
if (!system_check())
return false;
audio_pause(); /* first pause playback */
switch (global_settings.autocreatebookmark)
{
case BOOKMARK_YES:
return write_bookmark(true);
case BOOKMARK_NO:
return false;
case BOOKMARK_RECENT_ONLY_YES:
return write_bookmark(false);
}
#ifdef HAVE_LCD_BITMAP
const char *lines[]={ID2P(LANG_AUTO_BOOKMARK_QUERY)};
const struct text_message message={lines, 1};
#else
const char *lines[]={ID2P(LANG_AUTO_BOOKMARK_QUERY),
str(LANG_CONFIRM_WITH_BUTTON)};
const struct text_message message={lines, 2};
#endif
#if LCD_DEPTH > 1
show_main_backdrop(); /* switch to main backdrop as we may come from wps */
#endif
#if defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
show_remote_main_backdrop();
#endif
gui_syncstatusbar_draw(&statusbars, false);
if(gui_syncyesno_run(&message, NULL, NULL)==YESNO_YES)
{
if (global_settings.autocreatebookmark == BOOKMARK_RECENT_ONLY_ASK)
return write_bookmark(false);
else
return write_bookmark(true);
}
return false;
}
/* ----------------------------------------------------------------------- */
/* This function takes the current current resume information and writes */
/* that to the beginning of the bookmark file. */
/* This file will contain N number of bookmarks in the following format: */
/* resume_index*resume_offset*resume_seed*resume_first_index* */
/* resume_file*milliseconds*MP3 Title* */
/* ------------------------------------------------------------------------*/
static bool write_bookmark(bool create_bookmark_file)
{
bool success=false;
char* bookmark;
if (!system_check())
return false; /* something didn't happen correctly, do nothing */
bookmark = create_bookmark();
if (!bookmark)
return false; /* something didn't happen correctly, do nothing */
if (global_settings.usemrb)
success = add_bookmark(RECENT_BOOKMARK_FILE, bookmark, true);
/* writing the bookmark */
if (create_bookmark_file)
{
char* name = playlist_get_name(NULL, global_temp_buffer,
sizeof(global_temp_buffer));
if (generate_bookmark_file_name(name))
{
success = add_bookmark(global_bookmark_file_name, bookmark, false);
}
}
gui_syncsplash(HZ, success ? ID2P(LANG_BOOKMARK_CREATE_SUCCESS)
: ID2P(LANG_BOOKMARK_CREATE_FAILURE));
return true;
}
/* ----------------------------------------------------------------------- */
/* This function adds a bookmark to a file. */
/* ------------------------------------------------------------------------*/
static bool add_bookmark(const char* bookmark_file_name, const char* bookmark,
bool most_recent)
{
int temp_bookmark_file = 0;
int bookmark_file = 0;
int bookmark_count = 0;
char* playlist = NULL;
char* cp;
char* tmp;
int len = 0;
bool unique = false;
/* Opening up a temp bookmark file */
snprintf(global_temp_buffer, sizeof(global_temp_buffer),
"%s.tmp", bookmark_file_name);
temp_bookmark_file = open(global_temp_buffer,
O_WRONLY | O_CREAT | O_TRUNC);
if (temp_bookmark_file < 0)
return false; /* can't open the temp file */
if (most_recent && (global_settings.usemrb == BOOKMARK_UNIQUE_ONLY))
{
playlist = strchr(bookmark,'/');
cp = strrchr(bookmark,';');
len = cp - playlist;
unique = true;
}
/* Writing the new bookmark to the begining of the temp file */
write(temp_bookmark_file, bookmark, strlen(bookmark));
write(temp_bookmark_file, "\n", 1);
bookmark_count++;
/* Reading in the previous bookmarks and writing them to the temp file */
bookmark_file = open(bookmark_file_name, O_RDONLY);
if (bookmark_file >= 0)
{
while (read_line(bookmark_file, global_read_buffer,
sizeof(global_read_buffer)) > 0)
{
/* The MRB has a max of MAX_BOOKMARKS in it */
/* This keeps it from getting too large */
if (most_recent && (bookmark_count >= MAX_BOOKMARKS))
break;
cp = strchr(global_read_buffer,'/');
tmp = strrchr(global_read_buffer,';');
if (check_bookmark(global_read_buffer) &&
(!unique || len != tmp -cp || strncmp(playlist,cp,len)))
{
bookmark_count++;
write(temp_bookmark_file, global_read_buffer,
strlen(global_read_buffer));
write(temp_bookmark_file, "\n", 1);
}
}
close(bookmark_file);
}
close(temp_bookmark_file);
remove(bookmark_file_name);
rename(global_temp_buffer, bookmark_file_name);
return true;
}
/* ----------------------------------------------------------------------- */
/* This function takes the system resume data and formats it into a valid */
/* bookmark. */
/* ----------------------------------------------------------------------- */
static char* create_bookmark()
{
int resume_index = 0;
char *file;
/* grab the currently playing track */
struct mp3entry *id3 = audio_current_track();
if(!id3)
return NULL;
/* Get some basic resume information */
/* queue_resume and queue_resume_index are not used and can be ignored.*/
playlist_get_resume_info(&resume_index);
/* Get the currently playing file minus the path */
/* This is used when displaying the available bookmarks */
file = strrchr(id3->path,'/');
if(NULL == file)
return NULL;
/* create the bookmark */
snprintf(global_bookmark, sizeof(global_bookmark),
"%d;%ld;%d;%d;%ld;%d;%d;%s;%s",
resume_index,
id3->offset,
playlist_get_seed(NULL),
0,
id3->elapsed,
global_settings.repeat_mode,
global_settings.playlist_shuffle,
playlist_get_name(NULL, global_temp_buffer,
sizeof(global_temp_buffer)),
file+1);
/* checking to see if the bookmark is valid */
if (check_bookmark(global_bookmark))
return global_bookmark;
else
return NULL;
}
static bool check_bookmark(const char* bookmark)
{
return parse_bookmark(bookmark,
NULL,NULL,NULL, NULL,
NULL,0,NULL,NULL,
NULL, NULL);
}
/* ----------------------------------------------------------------------- */
/* This function will determine if an autoload is necessary. This is an */
/* interface function. */
/* ------------------------------------------------------------------------*/
bool bookmark_autoload(const char* file)
{
if(global_settings.autoloadbookmark == BOOKMARK_NO)
return false;
/*Checking to see if a bookmark file exists.*/
if(!generate_bookmark_file_name(file))
{
return false;
}
if(!file_exists(global_bookmark_file_name))
return false;
if(global_settings.autoloadbookmark == BOOKMARK_YES)
{
return bookmark_load(global_bookmark_file_name, true);
}
else
{
char* bookmark = select_bookmark(global_bookmark_file_name, true);
if (bookmark != NULL)
{
if (!play_bookmark(bookmark))
{
/* Selected bookmark not found. */
gui_syncsplash(HZ*2, ID2P(LANG_NOTHING_TO_RESUME));
}
/* Act as if autoload was done even if it failed, since the
* user did make an active selection.
*/
return true;
}
return false;
}
}
/* ----------------------------------------------------------------------- */
/* This function loads the bookmark information into the resume memory. */
/* This is an interface function. */
/* ------------------------------------------------------------------------*/
bool bookmark_load(const char* file, bool autoload)
{
int fd;
char* bookmark = NULL;
if(autoload)
{
fd = open(file, O_RDONLY);
if(fd >= 0)
{
if(read_line(fd, global_read_buffer, sizeof(global_read_buffer)) > 0)
bookmark=global_read_buffer;
close(fd);
}
}
else
{
/* This is not an auto-load, so list the bookmarks */
bookmark = select_bookmark(file, false);
}
if (bookmark != NULL)
{
if (!play_bookmark(bookmark))
{
/* Selected bookmark not found. */
if (!autoload)
{
gui_syncsplash(HZ*2, ID2P(LANG_NOTHING_TO_RESUME));
}
return false;
}
}
return true;
}
static int get_bookmark_count(const char* bookmark_file_name)
{
int read_count = 0;
int file = open(bookmark_file_name, O_RDONLY);
if(file < 0)
return -1;
while(read_line(file, global_read_buffer, sizeof(global_read_buffer)) > 0)
{
read_count++;
}
close(file);
return read_count;
}
static int buffer_bookmarks(struct bookmark_list* bookmarks, int first_line)
{
char* dest = ((char*) bookmarks) + bookmarks->buffer_size - 1;
int read_count = 0;
int file = open(bookmarks->filename, O_RDONLY);
if (file < 0)
{
return -1;
}
if ((first_line != 0) && ((size_t) filesize(file) < bookmarks->buffer_size
- sizeof(*bookmarks) - (sizeof(char*) * bookmarks->total_count)))
{
/* Entire file fits in buffer */
first_line = 0;
}
bookmarks->start = first_line;
bookmarks->count = 0;
bookmarks->reload = false;
while(read_line(file, global_read_buffer, sizeof(global_read_buffer)) > 0)
{
read_count++;
if (read_count >= first_line)
{
dest -= strlen(global_read_buffer) + 1;
if (dest < ((char*) bookmarks) + sizeof(*bookmarks)
+ (sizeof(char*) * (bookmarks->count + 1)))
{
break;
}
strcpy(dest, global_read_buffer);
bookmarks->items[bookmarks->count] = dest;
bookmarks->count++;
}
}
close(file);
return bookmarks->start + bookmarks->count;
}
static char* get_bookmark_info(int list_index,
void* data,
char *buffer,
size_t buffer_len)
{
struct bookmark_list* bookmarks = (struct bookmark_list*) data;
int index = list_index / 2;
int resume_index = 0;
long resume_time = 0;
bool shuffle = false;
if (bookmarks->show_dont_resume)
{
if (index == 0)
{
return list_index % 2 == 0
? (char*) str(LANG_BOOKMARK_DONT_RESUME) : " ";
}
index--;
}
if (bookmarks->reload || (index >= bookmarks->start + bookmarks->count)
|| (index < bookmarks->start))
{
int read_index = index;
/* Using count as a guide on how far to move could possibly fail
* sometimes. Use byte count if that is a problem?
*/
if (read_index != 0)
{
/* Move count * 3 / 4 items in the direction the user is moving,
* but don't go too close to the end.
*/
int offset = bookmarks->count;
int max = bookmarks->total_count - (bookmarks->count / 2);
if (read_index < bookmarks->start)
{
offset *= 3;
}
read_index = index - offset / 4;
if (read_index > max)
{
read_index = max;
}
if (read_index < 0)
{
read_index = 0;
}
}
if (buffer_bookmarks(bookmarks, read_index) <= index)
{
return "";
}
}
if (!parse_bookmark(bookmarks->items[index - bookmarks->start],
&resume_index, NULL, NULL, NULL, global_temp_buffer,
sizeof(global_temp_buffer), &resume_time, NULL, &shuffle,
global_filename))
{
return list_index % 2 == 0 ? (char*) str(LANG_BOOKMARK_INVALID) : " ";
}
if (list_index % 2 == 0)
{
char *name;
char *format;
int len = strlen(global_temp_buffer);
if (bookmarks->show_playlist_name && len > 0)
{
name = global_temp_buffer;
len--;
if (name[len] != '/')
{
strrsplt(name, '.');
}
else if (len > 1)
{
name[len] = '\0';
}
if (len > 1)
{
name = strrsplt(name, '/');
}
format = "%s : %s";
}
else
{
name = global_filename;
format = "%s";
}
strrsplt(global_filename, '.');
snprintf(buffer, buffer_len, format, name, global_filename);
return buffer;
}
else
{
char time_buf[32];
format_time(time_buf, sizeof(time_buf), resume_time);
snprintf(buffer, buffer_len, "%s, %d%s", time_buf, resume_index + 1,
shuffle ? (char*) str(LANG_BOOKMARK_SHUFFLE) : "");
return buffer;
}
}
/* ----------------------------------------------------------------------- */
/* This displays a the bookmarks in a file and allows the user to */
/* select one to play. */
/* ------------------------------------------------------------------------*/
static char* select_bookmark(const char* bookmark_file_name, bool show_dont_resume)
{
struct bookmark_list* bookmarks;
struct gui_synclist list;
int last_item = -2;
int item = 0;
int action;
size_t size;
bool exit = false;
bool refresh = true;
bookmarks = plugin_get_buffer(&size);
bookmarks->buffer_size = size;
bookmarks->show_dont_resume = show_dont_resume;
bookmarks->filename = bookmark_file_name;
bookmarks->start = 0;
bookmarks->show_playlist_name
= strcmp(bookmark_file_name, RECENT_BOOKMARK_FILE) == 0;
gui_synclist_init(&list, &get_bookmark_info, (void*) bookmarks, false, 2, NULL);
gui_synclist_set_title(&list, str(LANG_BOOKMARK_SELECT_BOOKMARK),
Icon_Bookmark);
gui_syncstatusbar_draw(&statusbars, true);
while (!exit)
{
gui_syncstatusbar_draw(&statusbars, false);
if (refresh)
{
int count = get_bookmark_count(bookmark_file_name);
bookmarks->total_count = count;
if (bookmarks->total_count < 1)
{
/* No more bookmarks, delete file and exit */
gui_syncsplash(HZ, ID2P(LANG_BOOKMARK_LOAD_EMPTY));
remove(bookmark_file_name);
return NULL;
}
if (bookmarks->show_dont_resume)
{
count++;
item++;
}
gui_synclist_set_nb_items(&list, count * 2);
if (item >= count)
{
/* Selected item has been deleted */
item = count - 1;
gui_synclist_select_item(&list, item * 2);
}
buffer_bookmarks(bookmarks, bookmarks->start);
gui_synclist_draw(&list);
refresh = false;
}
action = get_action(CONTEXT_BOOKMARKSCREEN, HZ / 2);
gui_synclist_do_button(&list, &action, LIST_WRAP_UNLESS_HELD);
item = gui_synclist_get_sel_pos(&list) / 2;
if (bookmarks->show_dont_resume)
{
item--;
}
if (item != last_item && global_settings.talk_menu)
{
last_item = item;
if (item == -1)
{
talk_id(LANG_BOOKMARK_DONT_RESUME, true);
}
else
{
say_bookmark(bookmarks->items[item - bookmarks->start], item);
}
}
if (action == ACTION_STD_CONTEXT)
{
MENUITEM_STRINGLIST(menu_items, ID2P(LANG_BOOKMARK_CONTEXT_MENU),
NULL, ID2P(LANG_BOOKMARK_CONTEXT_RESUME),
ID2P(LANG_BOOKMARK_CONTEXT_DELETE));
static const int menu_actions[] =
{
ACTION_STD_OK, ACTION_BMS_DELETE
};
int selection = do_menu(&menu_items, NULL, NULL, false);
refresh = true;
if (selection >= 0 && selection <=
(int) (sizeof(menu_actions) / sizeof(menu_actions[0])))
{
action = menu_actions[selection];
}
}
switch (action)
{
case ACTION_STD_OK:
if (item >= 0)
{
return bookmarks->items[item - bookmarks->start];
}
/* Else fall through */
case ACTION_TREE_WPS:
case ACTION_STD_CANCEL:
exit = true;
break;
case ACTION_BMS_DELETE:
if (item >= 0)
{
delete_bookmark(bookmark_file_name, item);
bookmarks->reload = true;
refresh = true;
last_item = -2;
}
break;
default:
if (default_event_handler(action) == SYS_USB_CONNECTED)
{
exit = true;
}
break;
}
}
return NULL;
}
/* ----------------------------------------------------------------------- */
/* This function takes a location in a bookmark file and deletes that */
/* bookmark. */
/* ------------------------------------------------------------------------*/
static bool delete_bookmark(const char* bookmark_file_name, int bookmark_id)
{
int temp_bookmark_file = 0;
int bookmark_file = 0;
int bookmark_count = 0;
/* Opening up a temp bookmark file */
snprintf(global_temp_buffer, sizeof(global_temp_buffer),
"%s.tmp", bookmark_file_name);
temp_bookmark_file = open(global_temp_buffer,
O_WRONLY | O_CREAT | O_TRUNC);
if (temp_bookmark_file < 0)
return false; /* can't open the temp file */
/* Reading in the previous bookmarks and writing them to the temp file */
bookmark_file = open(bookmark_file_name, O_RDONLY);
if (bookmark_file >= 0)
{
while (read_line(bookmark_file, global_read_buffer,
sizeof(global_read_buffer)) > 0)
{
if (bookmark_id != bookmark_count)
{
write(temp_bookmark_file, global_read_buffer,
strlen(global_read_buffer));
write(temp_bookmark_file, "\n", 1);
}
bookmark_count++;
}
close(bookmark_file);
}
close(temp_bookmark_file);
remove(bookmark_file_name);
rename(global_temp_buffer, bookmark_file_name);
return true;
}
/* ----------------------------------------------------------------------- */
/* This function parses a bookmark, says the voice UI part of it. */
/* ------------------------------------------------------------------------*/
static void say_bookmark(const char* bookmark,
int bookmark_id)
{
int resume_index;
long ms;
bool enqueue = false; /* only the first voice is not queued */
if (!parse_bookmark(bookmark, &resume_index, NULL, NULL, NULL,
global_temp_buffer, sizeof(global_temp_buffer), &ms, NULL, NULL, NULL))
{
talk_id(LANG_BOOKMARK_INVALID, true);
return;
}
/* disabled, because transition between talkbox and voice UI clip is not nice */
#if 0
if (global_settings.talk_dir >= 3)
{ /* "talkbox" enabled */
char* last = strrchr(global_temp_buffer, '/');
if (last)
{ /* compose filename for talkbox */
strncpy(last + 1, dir_thumbnail_name,
sizeof(global_temp_buffer) - (last - global_temp_buffer) - 1);
talk_file(global_temp_buffer, enqueue);
enqueue = true;
}
}
#endif
talk_id(VOICE_EXT_BMARK, enqueue);
talk_number(bookmark_id + 1, true);
talk_id(VOICE_BOOKMARK_SELECT_INDEX_TEXT, true);
talk_number(resume_index + 1, true);
talk_id(LANG_TIME, true);
if (ms / 60000)
talk_value(ms / 60000, UNIT_MIN, true);
talk_value((ms % 60000) / 1000, UNIT_SEC, true);
}
/* ----------------------------------------------------------------------- */
/* This function parses a bookmark and then plays it. */
/* ------------------------------------------------------------------------*/
static bool play_bookmark(const char* bookmark)
{
int index;
int offset;
int seed;
if (parse_bookmark(bookmark,
&index,
&offset,
&seed,
NULL,
global_temp_buffer,
sizeof(global_temp_buffer),
NULL,
&global_settings.repeat_mode,
&global_settings.playlist_shuffle,
global_filename))
{
return bookmark_play(global_temp_buffer, index, offset, seed,
global_filename);
}
return false;
}
static const char* skip_token(const char* s)
{
while (*s && *s != ';')
{
s++;
}
if (*s)
{
s++;
}
return s;
}
static const char* int_token(const char* s, int* dest)
{
if (dest != NULL)
{
*dest = atoi(s);
}
return skip_token(s);
}
static const char* long_token(const char* s, long* dest)
{
if (dest != NULL)
{
*dest = atoi(s); /* Should be atol, but we don't have it. */
}
return skip_token(s);
}
static const char* bool_token(const char* s, bool* dest)
{
if (dest != NULL)
{
*dest = atoi(s) != 0;
}
return skip_token(s);
}
/* ----------------------------------------------------------------------- */
/* This function takes a bookmark and parses it. This function also */
/* validates the bookmark. Passing in NULL for an output variable */
/* indicates that value is not requested. */
/* ----------------------------------------------------------------------- */
static bool parse_bookmark(const char *bookmark,
int *resume_index,
int *resume_offset,
int *resume_seed,
int *resume_first_index,
char* resume_file,
unsigned int resume_file_size,
long* ms,
int * repeat_mode, bool *shuffle,
char* file_name)
{
const char* s = bookmark;
const char* end;
s = int_token(s, resume_index);
s = int_token(s, resume_offset);
s = int_token(s, resume_seed);
s = int_token(s, resume_first_index);
s = long_token(s, ms);
s = int_token(s, repeat_mode);
s = bool_token(s, shuffle);
if (*s == 0)
{
return false;
}
end = strchr(s, ';');
if (resume_file != NULL)
{
size_t len = (end == NULL) ? strlen(s) : (size_t) (end - s);
len = MIN(resume_file_size - 1, len);
strncpy(resume_file, s, len);
resume_file[len] = 0;
}
if (end != NULL && file_name != NULL)
{
end++;
strncpy(file_name, end, MAX_PATH - 1);
file_name[MAX_PATH - 1] = 0;
}
return true;
}
/* ----------------------------------------------------------------------- */
/* This function is used by multiple functions and is used to generate a */
/* bookmark named based off of the input. */
/* Changing this function could result in how the bookmarks are stored. */
/* it would be here that the centralized/decentralized bookmark code */
/* could be placed. */
/* ----------------------------------------------------------------------- */
static bool generate_bookmark_file_name(const char *in)
{
int len = strlen(in);
/* if this is a root dir MP3, rename the bookmark file root_dir.bmark */
/* otherwise, name it based on the in variable */
if (!strcmp("/", in))
strcpy(global_bookmark_file_name, "/root_dir.bmark");
else
{
strcpy(global_bookmark_file_name, in);
if(global_bookmark_file_name[len-1] == '/')
len--;
strcpy(&global_bookmark_file_name[len], ".bmark");
}
return true;
}
/* ----------------------------------------------------------------------- */
/* Returns true if a bookmark file exists for the current playlist */
/* ----------------------------------------------------------------------- */
bool bookmark_exist(void)
{
bool exist=false;
if(system_check())
{
char* name = playlist_get_name(NULL, global_temp_buffer,
sizeof(global_temp_buffer));
if (generate_bookmark_file_name(name))
{
exist = file_exists(global_bookmark_file_name);
}
}
return exist;
}
/* ----------------------------------------------------------------------- */
/* Checks the current state of the system and returns if it is in a */
/* bookmarkable state. */
/* ----------------------------------------------------------------------- */
/* Inputs: */
/* ----------------------------------------------------------------------- */
/* Outputs: */
/* return bool: Indicates if the system was in a bookmarkable state */
/* ----------------------------------------------------------------------- */
static bool system_check(void)
{
int resume_index = 0;
if (!(audio_status() && audio_current_track()))
{
/* no track playing */
return false;
}
/* Checking to see if playing a queued track */
if (playlist_get_resume_info(&resume_index) == -1)
{
/* something bad happened while getting the queue information */
return false;
}
else if (playlist_modified(NULL))
{
/* can't bookmark while in the queue */
return false;
}
return true;
}
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