git.sesse.net Git - vlc/blob - 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_charset.h>
  33 #include <vlc_url.h>
  34
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #include <unistd.h>
  38 #include <errno.h>
  39
  40 int playlist_Export( playlist_t * p_playlist, const char *psz_filename,
  41                      playlist_item_t *p_export_root, const char *psz_type )
  42 {
  43     if( p_export_root == NULL ) return VLC_EGENERIC;
  44
  45     playlist_export_t *p_export =
  46         vlc_custom_create( p_playlist, sizeof( *p_export ), VLC_OBJECT_GENERIC,
  47                            "playlist export" );
  48     if( !p_export )
  49         return VLC_ENOMEM;
  50
  51     vlc_object_attach( p_export, p_playlist );
  52     msg_Dbg( p_export, "saving %s to file %s",
  53              p_export_root->p_input->psz_name, psz_filename );
  54
  55     int ret = VLC_EGENERIC;
  56
  57     /* Prepare the playlist_export_t structure */
  58     p_export->p_root = p_export_root;
  59     p_export->psz_filename = psz_filename;
  60     p_export->p_file = utf8_fopen( psz_filename, "wt" );
  61     if( p_export->p_file == NULL )
  62         msg_Err( p_export, "could not create playlist file %s (%m)",
  63                  psz_filename );
  64     else
  65     {
  66         module_t *p_module;
  67
  68         /* And call the module ! All work is done now */
  69         playlist_Lock( p_playlist );
  70         p_module = module_need( p_export, "playlist export", psz_type, true );
  71         playlist_Unlock( p_playlist );
  72
  73         if( p_module == NULL )
  74             msg_Err( p_playlist, "could not export playlist" );
  75         else
  76         {
  77             module_unneed( p_export, p_module );
  78             ret = VLC_SUCCESS;
  79         }
  80         fclose( p_export->p_file );
  81    }
  82    vlc_object_release( p_export );
  83    return ret;
  84 }
  85
  86 int playlist_Import( playlist_t *p_playlist, const char *psz_file )
  87 {
  88     input_item_t *p_input;
  89     const char *const psz_option = "meta-file";
  90     char *psz_uri = make_URI( psz_file );
  91
  92     if( psz_uri == NULL )
  93         return VLC_EGENERIC;
  94
  95     p_input = input_item_NewExt( p_playlist, psz_uri, psz_file,
  96                                  1, &psz_option, VLC_INPUT_OPTION_TRUSTED, -1 );
  97     free( psz_uri );
  98
  99     playlist_AddInput( p_playlist, p_input, PLAYLIST_APPEND, PLAYLIST_END,
 100                        true, false );
 101     return input_Read( p_playlist, p_input, true );
 102 }
 103
 104 /*****************************************************************************
 105  * A subitem has been added to the Media Library (Event Callback)
 106  *****************************************************************************/
 107 static void input_item_subitem_added( const vlc_event_t * p_event,
 108                                       void * user_data )
 109 {
 110     playlist_t *p_playlist = user_data;
 111     input_item_t *p_item = p_event->u.input_item_subitem_added.p_new_child;
 112
 113     /* playlist_AddInput() can fail, but we have no way to report that ..
 114      * Any way when it has failed, either the playlist is dying, either OOM */
 115     playlist_AddInput( p_playlist, p_item, PLAYLIST_APPEND, PLAYLIST_END,
 116             false, pl_Unlocked );
 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     if( !config_GetInt( p_playlist, "media-library") )
 126         return VLC_SUCCESS;
 127
 128     psz_datadir = config_GetUserDir( VLC_DATA_DIR );
 129
 130     if( !psz_datadir ) /* XXX: This should never happen */
 131     {
 132         msg_Err( p_playlist, "no data directory, cannot load media library") ;
 133         return VLC_EGENERIC;
 134     }
 135
 136     if( asprintf( &psz_uri, "%s" DIR_SEP "ml.xspf", psz_datadir ) != -1 )
 137     {   /* loosy check for media library file */
 138         struct stat st;
 139         int ret = utf8_stat( psz_uri , &st );
 140         free( psz_uri );
 141         if( ret )
 142         {
 143             free( psz_datadir );
 144             return VLC_EGENERIC;
 145         }
 146     }
 147
 148     psz_uri = make_URI( psz_datadir );
 149     free( psz_datadir );
 150     psz_datadir = psz_uri;
 151     if( psz_datadir == NULL )
 152         return VLC_EGENERIC;
 153
 154     /* Force XSPF demux (psz_datadir was a path, now it is a file URI) */
 155     if( asprintf( &psz_uri, "file/xspf-open%s/ml.xspf", psz_datadir+4 ) == -1 )
 156         psz_uri = NULL;
 157     free( psz_datadir );
 158     psz_datadir = NULL;
 159     if( psz_uri == NULL )
 160         return VLC_ENOMEM;
 161
 162     const char *const options[1] = { "meta-file", };
 163     /* that option has to be cleaned in input_item_subitem_added() */
 164     /* vlc_gc_decref() in the same function */
 165     p_input = input_item_NewExt( p_playlist, psz_uri, _("Media Library"),
 166                                  1, options, VLC_INPUT_OPTION_TRUSTED, -1 );
 167     free( psz_uri );
 168     if( p_input == NULL )
 169         return VLC_EGENERIC;
 170
 171     PL_LOCK;
 172     if( p_playlist->p_ml_onelevel->p_input )
 173         vlc_gc_decref( p_playlist->p_ml_onelevel->p_input );
 174     if( p_playlist->p_ml_category->p_input )
 175         vlc_gc_decref( p_playlist->p_ml_category->p_input );
 176
 177     p_playlist->p_ml_onelevel->p_input =
 178     p_playlist->p_ml_category->p_input = p_input;
 179     /* We save the input at two different place, incref */
 180     vlc_gc_incref( p_input );
 181     vlc_gc_incref( p_input );
 182
 183     vlc_event_attach( &p_input->event_manager, vlc_InputItemSubItemAdded,
 184                         input_item_subitem_added, p_playlist );
 185
 186     pl_priv(p_playlist)->b_doing_ml = true;
 187     PL_UNLOCK;
 188
 189     stats_TimerStart( p_playlist, "ML Load", STATS_TIMER_ML_LOAD );
 190     input_Read( p_playlist, p_input, true );
 191     stats_TimerStop( p_playlist,STATS_TIMER_ML_LOAD );
 192
 193     PL_LOCK;
 194     pl_priv(p_playlist)->b_doing_ml = false;
 195     PL_UNLOCK;
 196
 197     vlc_event_detach( &p_input->event_manager, vlc_InputItemSubItemAdded,
 198                         input_item_subitem_added, p_playlist );
 199
 200     vlc_gc_decref( p_input );
 201     return VLC_SUCCESS;
 202 }
 203
 204 int playlist_MLDump( playlist_t *p_playlist )
 205 {
 206     char *psz_datadir;
 207
 208     if( !config_GetInt( p_playlist, "media-library") )
 209         return VLC_SUCCESS;
 210
 211     psz_datadir = config_GetUserDir( VLC_DATA_DIR );
 212
 213     if( !psz_datadir ) /* XXX: This should never happen */
 214     {
 215         msg_Err( p_playlist, "no data directory, cannot save media library") ;
 216         return VLC_EGENERIC;
 217     }
 218
 219     char psz_dirname[ strlen( psz_datadir ) + sizeof( DIR_SEP "ml.xspf")];
 220     strcpy( psz_dirname, psz_datadir );
 221     free( psz_datadir );
 222     if( config_CreateDir( (vlc_object_t *)p_playlist, psz_dirname ) )
 223     {
 224         return VLC_EGENERIC;
 225     }
 226
 227     strcat( psz_dirname, DIR_SEP "ml.xspf" );
 228
 229     stats_TimerStart( p_playlist, "ML Dump", STATS_TIMER_ML_DUMP );
 230     playlist_Export( p_playlist, psz_dirname, p_playlist->p_ml_category,
 231                      "export-xspf" );
 232     stats_TimerStop( p_playlist, STATS_TIMER_ML_DUMP );
 233
 234     return VLC_SUCCESS;
 235 }