src/playlist/loadsave.c

   1 /*****************************************************************************
   2  * loadsave.c : Playlist loading / saving functions
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23 #ifdef HAVE_CONFIG_H
  24 # include "config.h"
  25 #endif
  26
  27 #include <vlc_common.h>
  28 #include <vlc_playlist.h>
  29 #include <vlc_events.h>
  30 #include "playlist_internal.h"
  31 #include "config/configuration.h"
  32 #include <vlc_fs.h>
  33 #include <vlc_url.h>
  34
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #include <unistd.h>
  38
  39 int playlist_Export( playlist_t * p_playlist, const char *psz_filename,
  40                      playlist_item_t *p_export_root, const char *psz_type )
  41 {
  42     if( p_export_root == NULL ) return VLC_EGENERIC;
  43
  44     playlist_export_t *p_export =
  45         vlc_custom_create( p_playlist, sizeof( *p_export ), VLC_OBJECT_GENERIC,
  46                            "playlist export" );
  47     if( !p_export )
  48         return VLC_ENOMEM;
  49
  50     vlc_object_attach( p_export, p_playlist );
  51     msg_Dbg( p_export, "saving %s to file %s",
  52              p_export_root->p_input->psz_name, psz_filename );
  53
  54     int ret = VLC_EGENERIC;
  55
  56     /* Prepare the playlist_export_t structure */
  57     p_export->p_root = p_export_root;
  58     p_export->psz_filename = psz_filename;
  59     p_export->p_file = vlc_fopen( psz_filename, "wt" );
  60     if( p_export->p_file == NULL )
  61         msg_Err( p_export, "could not create playlist file %s (%m)",
  62                  psz_filename );
  63     else
  64     {
  65         module_t *p_module;
  66
  67         /* And call the module ! All work is done now */
  68         playlist_Lock( p_playlist );
  69         p_module = module_need( p_export, "playlist export", psz_type, true );
  70         playlist_Unlock( p_playlist );
  71
  72         if( p_module == NULL )
  73             msg_Err( p_playlist, "could not export playlist" );
  74         else
  75         {
  76             module_unneed( p_export, p_module );
  77             ret = VLC_SUCCESS;
  78         }
  79         fclose( p_export->p_file );
  80    }
  81    vlc_object_release( p_export );
  82    return ret;
  83 }
  84
  85 int playlist_Import( playlist_t *p_playlist, const char *psz_file )
  86 {
  87     input_item_t *p_input;
  88     const char *const psz_option = "meta-file";
  89     char *psz_uri = make_URI( psz_file );
  90
  91     if( psz_uri == NULL )
  92         return VLC_EGENERIC;
  93
  94     p_input = input_item_NewExt( p_playlist, psz_uri, psz_file,
  95                                  1, &psz_option, VLC_INPUT_OPTION_TRUSTED, -1 );
  96     free( psz_uri );
  97
  98     playlist_AddInput( p_playlist, p_input, PLAYLIST_APPEND, PLAYLIST_END,
  99                        true, false );
 100     return input_Read( p_playlist, p_input );
 101 }
 102
 103 /*****************************************************************************
 104  * A subitem has been added to the Media Library (Event Callback)
 105  *****************************************************************************/
 106 static void input_item_subitem_tree_added( const vlc_event_t * p_event,
 107                                       void * user_data )
 108 {
 109     playlist_t *p_playlist = user_data;
 110     input_item_node_t *p_root =
 111         p_event->u.input_item_subitem_tree_added.p_root;
 112
 113     PL_LOCK;
 114     playlist_InsertInputItemTree ( p_playlist, p_playlist->p_media_library,
 115                                    p_root, 0, false );
 116     PL_UNLOCK;
 117 }
 118
 119 int playlist_MLLoad( playlist_t *p_playlist )
 120 {
 121     char *psz_datadir;
 122     char *psz_uri = NULL;
 123     input_item_t *p_input;
 124
 125     psz_datadir = config_GetUserDir( VLC_DATA_DIR );
 126
 127     if( !psz_datadir ) /* XXX: This should never happen */
 128     {
 129         msg_Err( p_playlist, "no data directory, cannot load media library") ;
 130         return VLC_EGENERIC;
 131     }
 132
 133     if( asprintf( &psz_uri, "%s" DIR_SEP "ml.xspf", psz_datadir ) != -1 )
 134     {   /* loosy check for media library file */
 135         struct stat st;
 136         int ret = vlc_stat( psz_uri , &st );
 137         free( psz_uri );
 138         if( ret )
 139         {
 140             free( psz_datadir );
 141             return VLC_EGENERIC;
 142         }
 143     }
 144
 145     psz_uri = make_URI( psz_datadir );
 146     free( psz_datadir );
 147     psz_datadir = psz_uri;
 148     if( psz_datadir == NULL )
 149         return VLC_EGENERIC;
 150
 151     /* Force XSPF demux (psz_datadir was a path, now it is a file URI) */
 152     if( asprintf( &psz_uri, "file/xspf-open%s/ml.xspf", psz_datadir+4 ) == -1 )
 153         psz_uri = NULL;
 154     free( psz_datadir );
 155     psz_datadir = NULL;
 156     if( psz_uri == NULL )
 157         return VLC_ENOMEM;
 158
 159     const char *const options[1] = { "meta-file", };
 160     /* that option has to be cleaned in input_item_subitem_tree_added() */
 161     /* vlc_gc_decref() in the same function */
 162     p_input = input_item_NewExt( p_playlist, psz_uri, _("Media Library"),
 163                                  1, options, VLC_INPUT_OPTION_TRUSTED, -1 );
 164     free( psz_uri );
 165     if( p_input == NULL )
 166         return VLC_EGENERIC;
 167
 168     PL_LOCK;
 169     if( p_playlist->p_media_library->p_input )
 170         vlc_gc_decref( p_playlist->p_media_library->p_input );
 171
 172     p_playlist->p_media_library->p_input = p_input;
 173
 174     vlc_event_attach( &p_input->event_manager, vlc_InputItemSubItemTreeAdded,
 175                         input_item_subitem_tree_added, p_playlist );
 176
 177     pl_priv(p_playlist)->b_doing_ml = true;
 178     PL_UNLOCK;
 179
 180     stats_TimerStart( p_playlist, "ML Load", STATS_TIMER_ML_LOAD );
 181     input_Read( p_playlist, p_input );
 182     stats_TimerStop( p_playlist,STATS_TIMER_ML_LOAD );
 183
 184     PL_LOCK;
 185     pl_priv(p_playlist)->b_doing_ml = false;
 186     PL_UNLOCK;
 187
 188     vlc_event_detach( &p_input->event_manager, vlc_InputItemSubItemTreeAdded,
 189                         input_item_subitem_tree_added, p_playlist );
 190
 191     return VLC_SUCCESS;
 192 }
 193
 194 int playlist_MLDump( playlist_t *p_playlist )
 195 {
 196     char *psz_datadir;
 197
 198     psz_datadir = config_GetUserDir( VLC_DATA_DIR );
 199
 200     if( !psz_datadir ) /* XXX: This should never happen */
 201     {
 202         msg_Err( p_playlist, "no data directory, cannot save media library") ;
 203         return VLC_EGENERIC;
 204     }
 205
 206     char psz_dirname[ strlen( psz_datadir ) + sizeof( DIR_SEP "ml.xspf")];
 207     strcpy( psz_dirname, psz_datadir );
 208     free( psz_datadir );
 209     if( config_CreateDir( (vlc_object_t *)p_playlist, psz_dirname ) )
 210     {
 211         return VLC_EGENERIC;
 212     }
 213
 214     strcat( psz_dirname, DIR_SEP "ml.xspf" );
 215
 216     stats_TimerStart( p_playlist, "ML Dump", STATS_TIMER_ML_DUMP );
 217     playlist_Export( p_playlist, psz_dirname, p_playlist->p_media_library,
 218                      "export-xspf" );
 219     stats_TimerStop( p_playlist, STATS_TIMER_ML_DUMP );
 220
 221     return VLC_SUCCESS;
 222 }