[4063b7]: playlist.c Maximize Restore History

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playlist.c    263 lines (239 with data), 6.7 kB

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/* MiniDLNA media server
* Copyright (C) 2009-2010 Justin Maggard
*
* This file is part of MiniDLNA.
*
* MiniDLNA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* MiniDLNA is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MiniDLNA. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <libgen.h>
#include <limits.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "tagutils/tagutils.h"
#include "upnpglobalvars.h"
#include "scanner.h"
#include "metadata.h"
#include "utils.h"
#include "sql.h"
#include "log.h"
int
insert_playlist(const char * path, char * name)
{
struct song_metadata plist;
struct stat file;
int items = 0, matches, ret;
char type[4];
strncpy(type, strrchr(name, '.')+1, 4);
if( start_plist(path, NULL, &file, NULL, type) != 0 )
{
DPRINTF(E_WARN, L_SCANNER, "Bad playlist [%s]\n", path);
return -1;
}
while( (ret = next_plist_track(&plist, &file, NULL, type)) == 0 )
{
items++;
freetags(&plist);
}
if( ret == 2 ) // Bad playlist -- contains binary characters
{
DPRINTF(E_WARN, L_SCANNER, "Bad playlist [%s]\n", path);
return -1;
}
strip_ext(name);
DPRINTF(E_DEBUG, L_SCANNER, "Playlist %s contains %d items\n", name, items);
matches = sql_get_int_field(db, "SELECT count(*) from PLAYLISTS where NAME = '%q'", name);
if( matches > 0 )
{
sql_exec(db, "INSERT into PLAYLISTS"
" (NAME, PATH, ITEMS) "
"VALUES"
" ('%q(%d)', '%q', %d)",
name, matches, path, items);
}
else
{
sql_exec(db, "INSERT into PLAYLISTS"
" (NAME, PATH, ITEMS) "
"VALUES"
" ('%q', '%q', %d)",
name, path, items);
}
return 0;
}
static unsigned int
gen_dir_hash(const char *path)
{
char dir[PATH_MAX], *base;
int len;
strncpy(dir, path, sizeof(dir));
dir[sizeof(dir)-1] = '\0';
base = strrchr(dir, '/');
if( !base )
base = strrchr(dir, '\\');
if( base )
{
*base = '\0';
len = base - dir;
}
else
return 0;
return DJBHash(dir, len);
}
int
fill_playlists()
{
int rows, i, found, len;
char **result;
char *plpath, *plname, *fname, *last_dir;
unsigned int hash, last_hash = 0;
char class[] = "playlistContainer";
struct song_metadata plist;
struct stat file;
char type[4];
sqlite_int64 plID, detailID;
char sql_buf[] = "SELECT ID, NAME, PATH from PLAYLISTS where ITEMS > FOUND";
DPRINTF(E_WARN, L_SCANNER, "Parsing playlists...\n");
if( sql_get_table(db, sql_buf, &result, &rows, NULL) != SQLITE_OK )
return -1;
if( !rows )
{
sqlite3_free_table(result);
return 0;
}
rows++;
for( i=3; i<rows*3; i++ )
{
plID = strtoll(result[i], NULL, 10);
plname = result[++i];
plpath = result[++i];
last_dir = NULL;
last_hash = 0;
strncpy(type, strrchr(plpath, '.')+1, 4);
if( start_plist(plpath, NULL, &file, NULL, type) != 0 )
continue;
DPRINTF(E_DEBUG, L_SCANNER, "Scanning playlist \"%s\" [%s]\n", plname, plpath);
if( sql_get_int_field(db, "SELECT ID from OBJECTS where PARENT_ID = '"MUSIC_PLIST_ID"'"
" and NAME = '%q'", plname) <= 0 )
{
detailID = GetFolderMetadata(plname, NULL, NULL, NULL, 0);
sql_exec(db, "INSERT into OBJECTS"
" (OBJECT_ID, PARENT_ID, DETAIL_ID, CLASS, NAME) "
"VALUES"
" ('%s$%llX', '%s', %lld, 'container.%s', '%q')",
MUSIC_PLIST_ID, plID, MUSIC_PLIST_ID, detailID, class, plname);
}
plpath = dirname(plpath);
found = 0;
while( next_plist_track(&plist, &file, NULL, type) == 0 )
{
hash = gen_dir_hash(plist.path);
if( sql_get_int_field(db, "SELECT 1 from OBJECTS where OBJECT_ID = '%s$%llX$%d'",
MUSIC_PLIST_ID, plID, plist.track) == 1 )
{
//DEBUG DPRINTF(E_DEBUG, L_SCANNER, "%d: already in database\n", plist.track);
found++;
freetags(&plist);
continue;
}
if( last_dir )
{
if( hash == last_hash )
{
fname = basename(plist.path);
detailID = sql_get_int_field(db, "SELECT ID from DETAILS where PATH = '%q/%q'", last_dir, fname);
}
else
detailID = -1;
if( detailID <= 0 )
{
sqlite3_free(last_dir);
last_dir = NULL;
}
else
goto found;
}
fname = plist.path;
DPRINTF(E_DEBUG, L_SCANNER, "%d: checking database for %s\n", plist.track, plist.path);
if( !strpbrk(fname, "\\/") )
{
len = strlen(fname) + strlen(plpath) + 2;
plist.path = malloc(len);
snprintf(plist.path, len, "%s/%s", plpath, fname);
free(fname);
fname = plist.path;
}
else
{
while( *fname == '\\' )
{
fname++;
}
}
retry:
//DEBUG DPRINTF(E_DEBUG, L_SCANNER, "* Searching for %s in db\n", fname);
detailID = sql_get_int_field(db, "SELECT ID from DETAILS where PATH like '%%%q'", fname);
if( detailID > 0 )
{
found:
DPRINTF(E_DEBUG, L_SCANNER, "+ %s found in db\n", fname);
sql_exec(db, "INSERT into OBJECTS"
" (OBJECT_ID, PARENT_ID, CLASS, DETAIL_ID, NAME, REF_ID) "
"SELECT"
" '%s$%llX$%d', '%s$%llX', CLASS, DETAIL_ID, NAME, OBJECT_ID from OBJECTS"
" where DETAIL_ID = %lld and OBJECT_ID glob '" BROWSEDIR_ID "$*'",
MUSIC_PLIST_ID, plID, plist.track,
MUSIC_PLIST_ID, plID,
detailID);
if( !last_dir )
{
last_dir = sql_get_text_field(db, "SELECT PATH from DETAILS where ID = %lld", detailID);
fname = strrchr(last_dir, '/');
if( fname )
*fname = '\0';
last_hash = hash;
}
found++;
}
else
{
DPRINTF(E_DEBUG, L_SCANNER, "- %s not found in db\n", fname);
if( strchr(fname, '\\') )
{
fname = modifyString(fname, "\\", "/", 0);
goto retry;
}
else if( (fname = strchr(fname, '/')) )
{
fname++;
goto retry;
}
}
freetags(&plist);
}
if( last_dir )
{
sqlite3_free(last_dir);
last_dir = NULL;
}
sql_exec(db, "UPDATE PLAYLISTS set FOUND = %d where ID = %lld", found, plID);
}
sqlite3_free_table(result);
DPRINTF(E_WARN, L_SCANNER, "Finished parsing playlists.\n");
return 0;
}