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rockbox/apps/bookmark.c
Daniel Stenberg 7bcfc1ddfe #ifdef instead of #if 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12362 a1c6a512-1295-4272-9138-f99709370657
2007-02-17 22:26:14 +00:00

1058 lines
33 KiB
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C)2003 by Benjamin Metzler
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* 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 "applimits.h"
#include "lcd.h"
#include "action.h"
#include "usb.h"
#include "audio.h"
#include "playlist.h"
#include "settings.h"
#include "tree.h"
#include "bookmark.h"
#include "dir.h"
#include "status.h"
#include "system.h"
#include "errno.h"
#include "icons.h"
#include "atoi.h"
#include "string.h"
#include "menu.h"
#include "lang.h"
#include "screens.h"
#include "status.h"
#include "debug.h"
#include "kernel.h"
#include "sprintf.h"
#include "talk.h"
#include "misc.h"
#include "abrepeat.h"
#include "splash.h"
#include "yesno.h"
#if LCD_DEPTH > 1
#include "backdrop.h"
#endif
#define MAX_BOOKMARKS 10
#define MAX_BOOKMARK_SIZE 350
#define RECENT_BOOKMARK_FILE ROCKBOX_DIR "/most-recent.bmark"
static bool add_bookmark(const char* bookmark_file_name, const char* bookmark);
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 display_bookmark(const char* bookmark,
int bookmark_id,
int bookmark_count);
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 char* get_bookmark(const char* bookmark_file, int bookmark_count);
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 char* select_bookmark(const char* bookmark_file_name);
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];
static char global_bookmark_file_name[MAX_PATH];
static char global_read_buffer[MAX_BOOKMARK_SIZE];
static char global_bookmark[MAX_BOOKMARK_SIZE];
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);
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);
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
unsigned char *lines[]={str(LANG_AUTO_BOOKMARK_QUERY)};
struct text_message message={(char **)lines, 1};
#else
unsigned char *lines[]={str(LANG_AUTO_BOOKMARK_QUERY),
str(LANG_RESUME_CONFIRM_PLAYER)};
struct text_message message={(char **)lines, 2};
#endif
#if LCD_DEPTH > 1
show_main_backdrop(); /* switch to main backdrop as we may come from wps */
#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);
/* 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);
}
}
gui_syncsplash(HZ, true, str(success ? LANG_BOOKMARK_CREATE_SUCCESS
: 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)
{
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 (!strcmp(bookmark_file_name,RECENT_BOOKMARK_FILE) &&
(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)))
{
/* The MRB has a max of MAX_BOOKMARKS in it */
/* This keeps it from getting too large */
if ((strcmp(bookmark_file_name,RECENT_BOOKMARK_FILE)==0))
{
if(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)
{
int key;
int fd;
int i;
if(global_settings.autoloadbookmark == BOOKMARK_NO)
return false;
/*Checking to see if a bookmark file exists.*/
if(!generate_bookmark_file_name(file))
{
return false;
}
fd = open(global_bookmark_file_name, O_RDONLY);
if(fd<0)
return false;
close(fd);
if(global_settings.autoloadbookmark == BOOKMARK_YES)
{
return bookmark_load(global_bookmark_file_name, true);
}
else
{
/* Prompting user to confirm bookmark load */
FOR_NB_SCREENS(i)
screens[i].clear_display();
gui_syncstatusbar_draw(&statusbars, false);
FOR_NB_SCREENS(i)
{
#ifdef HAVE_LCD_BITMAP
screens[i].setmargins(0, STATUSBAR_HEIGHT);
screens[i].puts_scroll(0,0, str(LANG_BOOKMARK_AUTOLOAD_QUERY));
screens[i].puts(0,1, str(LANG_CONFIRM_WITH_PLAY_RECORDER));
screens[i].puts(0,2, str(LANG_BOOKMARK_SELECT_LIST_BOOKMARKS));
screens[i].puts(0,3, str(LANG_CANCEL_WITH_ANY_RECORDER));
screens[i].update();
#else
screens[i].puts_scroll(0,0, str(LANG_BOOKMARK_AUTOLOAD_QUERY));
screens[i].puts(0,1,str(LANG_RESUME_CONFIRM_PLAYER));
#endif
}
/* Wait for a key to be pushed */
key = get_action(CONTEXT_BOOKMARKSCREEN,TIMEOUT_BLOCK);
switch(key)
{
#ifdef HAVE_LCD_BITMAP
case ACTION_STD_NEXT:
action_signalscreenchange();
return bookmark_load(global_bookmark_file_name, false);
#endif
case ACTION_BMS_SELECT:
action_signalscreenchange();
return bookmark_load(global_bookmark_file_name, true);
default:
break;
}
action_signalscreenchange();
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)))
bookmark=global_read_buffer;
close(fd);
}
}
else
{
/* This is not an auto-load, so list the bookmarks */
bookmark = select_bookmark(file);
}
if (bookmark != NULL)
{
return play_bookmark(bookmark);
}
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;
/* Get the requested bookmark */
while(read_line(file, global_read_buffer, sizeof(global_read_buffer)))
{
if(check_bookmark(global_read_buffer))
read_count++;
}
close(file);
return read_count;
}
/* ----------------------------------------------------------------------- */
/* 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)
{
int bookmark_id = 0;
int bookmark_id_prev = -1;
int key;
char* bookmark = NULL;
int bookmark_count = 0;
#ifdef HAVE_LCD_BITMAP
int i;
int x = lcd_getxmargin();
int y = lcd_getymargin();
FOR_NB_SCREENS(i)
screens[i].setmargins(0, 0);
#endif
bookmark_count = get_bookmark_count(bookmark_file_name);
action_signalscreenchange();
while(true)
{
if(bookmark_id < 0)
bookmark_id = bookmark_count -1;
if(bookmark_id >= bookmark_count)
bookmark_id = 0;
if (bookmark_id != bookmark_id_prev)
{
bookmark = get_bookmark(bookmark_file_name, bookmark_id);
bookmark_id_prev = bookmark_id;
}
if (!bookmark)
{
/* if there were no bookmarks in the file, delete the file and exit. */
if(bookmark_id <= 0)
{
gui_syncsplash(HZ, true, str(LANG_BOOKMARK_LOAD_EMPTY));
remove(bookmark_file_name);
action_signalscreenchange();
return NULL;
}
else
{
bookmark_id_prev = bookmark_id;
bookmark_id--;
}
}
else
{
display_bookmark(bookmark, bookmark_id, bookmark_count);
if (global_settings.talk_menu) /* for voice UI */
say_bookmark(bookmark, bookmark_id);
}
/* waiting for the user to click a button */
key = get_action(CONTEXT_BOOKMARKSCREEN,TIMEOUT_BLOCK);
switch(key)
{
case ACTION_BMS_SELECT:
/* User wants to use this bookmark */
#ifdef HAVE_LCD_BITMAP
FOR_NB_SCREENS(i)
screens[i].setmargins(0, global_settings.statusbar
? STATUSBAR_HEIGHT : 0);
#endif
action_signalscreenchange();
return bookmark;
case ACTION_BMS_DELETE:
/* User wants to delete this bookmark */
delete_bookmark(bookmark_file_name, bookmark_id);
bookmark_id_prev=-2;
bookmark_count--;
if(bookmark_id >= bookmark_count)
bookmark_id = bookmark_count -1;
break;
case ACTION_STD_PREV:
case ACTION_STD_PREVREPEAT:
bookmark_id--;
break;
case ACTION_STD_NEXT:
case ACTION_STD_NEXTREPEAT:
bookmark_id++;
break;
case ACTION_BMS_EXIT:
#ifdef HAVE_LCD_BITMAP
FOR_NB_SCREENS(i)
screens[i].setmargins(x, y);
#endif
action_signalscreenchange();
return NULL;
default:
if(default_event_handler(key) == SYS_USB_CONNECTED)
{
action_signalscreenchange();
return NULL;
}
break;
}
}
action_signalscreenchange();
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);
bookmark_file = open(bookmark_file_name, O_RDONLY);
if (temp_bookmark_file < 0 || bookmark_file < 0)
return false; /* can't open one of the files */
/* Reading in the previous bookmarks and writing them to the temp file */
while (read_line(bookmark_file, global_read_buffer,
sizeof(global_read_buffer)))
{
/* The MRB has a max of MAX_BOOKMARKS in it */
/* This keeps it from getting too large */
if ((strcmp(bookmark_file_name,RECENT_BOOKMARK_FILE)==0))
{
if(bookmark_count >= MAX_BOOKMARKS)
break;
}
if (check_bookmark(global_read_buffer))
{
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 and displays it for the user. */
/* ------------------------------------------------------------------------*/
static void display_bookmark(const char* bookmark,
int bookmark_id,
int bookmark_count)
{
int resume_index = 0;
long ms = 0;
int repeat_mode = 0;
bool playlist_shuffle = false;
char *dot;
char time_buf[32];
int i;
/* getting the index and the time into the file */
parse_bookmark(bookmark,
&resume_index, NULL, NULL, NULL, NULL, 0,
&ms, &repeat_mode, &playlist_shuffle,
global_filename);
FOR_NB_SCREENS(i)
{
screens[i].clear_display();
screens[i].stop_scroll();
}
#ifdef HAVE_LCD_BITMAP
/* bookmark shuffle and repeat states*/
switch (repeat_mode)
{
#ifdef AB_REPEAT_ENABLE
case REPEAT_AB:
statusbar_icon_play_mode(Icon_RepeatAB);
break;
#endif
case REPEAT_ONE:
statusbar_icon_play_mode(Icon_RepeatOne);
break;
case REPEAT_ALL:
statusbar_icon_play_mode(Icon_Repeat);
break;
}
if(playlist_shuffle)
statusbar_icon_shuffle();
/* File Name */
dot = strrchr(global_filename, '.');
if (dot)
*dot='\0';
FOR_NB_SCREENS(i)
screens[i].puts_scroll(0, 0, (unsigned char *)global_filename);
if (dot)
*dot='.';
/* bookmark number */
snprintf(global_temp_buffer, sizeof(global_temp_buffer), "%s: %d/%d",
str(LANG_BOOKMARK_SELECT_BOOKMARK_TEXT),
bookmark_id + 1, bookmark_count);
FOR_NB_SCREENS(i)
screens[i].puts_scroll(0, 1, (unsigned char *)global_temp_buffer);
/* bookmark resume index */
snprintf(global_temp_buffer, sizeof(global_temp_buffer), "%s: %d",
str(LANG_BOOKMARK_SELECT_INDEX_TEXT), resume_index+1);
FOR_NB_SCREENS(i)
screens[i].puts_scroll(0, 2, (unsigned char *)global_temp_buffer);
/* elapsed time*/
format_time(time_buf, sizeof(time_buf), ms);
snprintf(global_temp_buffer, sizeof(global_temp_buffer), "%s: %s",
str(LANG_BOOKMARK_SELECT_TIME_TEXT), time_buf);
FOR_NB_SCREENS(i)
screens[i].puts_scroll(0, 3, (unsigned char *)global_temp_buffer);
/* commands */
FOR_NB_SCREENS(i)
{
screens[i].puts_scroll(0, 4, str(LANG_BOOKMARK_SELECT_PLAY));
screens[i].puts_scroll(0, 5, str(LANG_BOOKMARK_SELECT_EXIT));
screens[i].puts_scroll(0, 6, str(LANG_BOOKMARK_SELECT_DELETE));
screens[i].update();
}
#else
dot = strrchr(global_filename, '.');
if (dot)
*dot='\0';
format_time(time_buf, sizeof(time_buf), ms);
snprintf(global_temp_buffer, sizeof(global_temp_buffer),
"%d/%d, %s, %s", (bookmark_id + 1), bookmark_count,
time_buf, global_filename);
if (dot)
*dot='.';
gui_syncstatusbar_draw(&statusbars, false);
FOR_NB_SCREENS(i)
{
screens[i].puts_scroll(0,0,global_temp_buffer);
screens[i].puts(0,1,str(LANG_RESUME_CONFIRM_PLAYER));
}
#endif
}
/* ----------------------------------------------------------------------- */
/* 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;
char dir[MAX_PATH];
bool enqueue = false; /* only the first voice is not queued */
parse_bookmark(bookmark,
&resume_index,
NULL, NULL, NULL,
dir, sizeof(dir),
&ms, NULL, NULL,
NULL);
/* 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(dir, '/');
if (last)
{ /* compose filename for talkbox */
strncpy(last + 1, dir_thumbnail_name, sizeof(dir)-(last-dir)-1);
talk_file(dir, enqueue);
enqueue = true;
}
}
#endif
talk_id(VOICE_EXT_BMARK, enqueue);
talk_number(bookmark_id + 1, true);
talk_id(LANG_BOOKMARK_SELECT_INDEX_TEXT, true);
talk_number(resume_index + 1, true);
talk_id(LANG_BOOKMARK_SELECT_TIME_TEXT, 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))
{
bookmark_play(global_temp_buffer, index, offset, seed,
global_filename);
return true;
}
return false;
}
/* ----------------------------------------------------------------------- */
/* This function retrieves a given bookmark from a file. */
/* If the bookmark requested is beyond the number of bookmarks available */
/* in the file, it will return the last one. */
/* It also returns the index number of the bookmark in the file */
/* ------------------------------------------------------------------------*/
static char* get_bookmark(const char* bookmark_file, int bookmark_count)
{
int read_count = -1;
int result = 0;
int file = open(bookmark_file, O_RDONLY);
if (file < 0)
return NULL;
if (bookmark_count < 0)
return NULL;
/* Get the requested bookmark */
while (read_count < bookmark_count)
{
/*Reading in a single bookmark */
result = read_line(file,
global_read_buffer,
sizeof(global_read_buffer));
/* Reading past the last bookmark in the file
causes the loop to stop */
if (result <= 0)
break;
read_count++;
}
close(file);
if (read_count == bookmark_count)
return global_read_buffer;
else
return NULL;
}
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))
{
int fd=open(global_bookmark_file_name, O_RDONLY);
if (fd >=0)
{
close(fd);
exist=true;
}
}
}
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;
struct mp3entry *id3 = audio_current_track();
if (!id3)
{
/* 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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