playlist: if(X)free(X) -> free(X)
[vlc.git] / 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/vlc.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
34 #include <sys/types.h>
35 #include <sys/stat.h>
36 #include <unistd.h>
37 #include <errno.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     module_t *p_module;
43     playlist_export_t *p_export;
44
45     if( p_export_root == NULL ) return VLC_EGENERIC;
46
47     msg_Info( p_playlist, "saving %s to file %s",
48                     p_export_root->p_input->psz_name, psz_filename );
49
50     /* Prepare the playlist_export_t structure */
51     p_export = (playlist_export_t *)malloc( sizeof(playlist_export_t) );
52     if( !p_export)
53     {
54         msg_Err( p_playlist, "out of memory" );
55         return VLC_ENOMEM;
56     }
57     p_export->psz_filename = NULL;
58     if ( psz_filename )
59         p_export->psz_filename = strdup( psz_filename );
60     p_export->p_file = utf8_fopen( psz_filename, "wt" );
61     if( !p_export->p_file )
62     {
63         msg_Err( p_playlist , "could not create playlist file %s (%m)",
64                  psz_filename );
65         return VLC_EGENERIC;
66     }
67
68     p_export->p_root = p_export_root;
69
70     /* Lock the playlist */
71     vlc_mutex_lock( &p_playlist->object_lock );
72     p_playlist->p_private = (void *)p_export;
73
74     /* And call the module ! All work is done now */
75     p_module = module_Need( p_playlist, "playlist export", psz_type, VLC_TRUE);
76     if( !p_module )
77     {
78         msg_Warn( p_playlist, "exporting playlist failed" );
79         vlc_mutex_unlock( &p_playlist->object_lock );
80         return VLC_ENOOBJ;
81     }
82     module_Unneed( p_playlist , p_module );
83
84     /* Clean up */
85     fclose( p_export->p_file );
86     free( p_export->psz_filename );
87     free ( p_export );
88     p_playlist->p_private = NULL;
89     vlc_mutex_unlock( &p_playlist->object_lock );
90
91     return VLC_SUCCESS;
92 }
93
94 /*****************************************************************************
95  * A subitem has been added to the Media Library (Event Callback)
96  *****************************************************************************/
97 static void input_item_subitem_added( const vlc_event_t * p_event,
98                                       void * user_data )
99 {
100     playlist_t *p_playlist = user_data;
101     input_item_t *p_item = p_event->u.input_item_subitem_added.p_new_child;
102
103     /* playlist_AddInput() can fail, but we have no way to report that ..
104      * Any way when it has failed, either the playlist is dying, either OOM */
105     playlist_AddInput( p_playlist, p_item, PLAYLIST_APPEND, PLAYLIST_END,
106             VLC_FALSE, VLC_FALSE );
107 }
108
109 int playlist_MLLoad( playlist_t *p_playlist )
110 {
111     const char *psz_datadir = p_playlist->p_libvlc->psz_datadir;
112     char *psz_uri = NULL;
113     input_item_t *p_input;
114
115     if( !config_GetInt( p_playlist, "media-library") ) return VLC_SUCCESS;
116     if( !psz_datadir ) /* XXX: This should never happen */
117     {
118         msg_Err( p_playlist, "no data directory, cannot load media library") ;
119         return VLC_EGENERIC;
120     }
121
122     if( asprintf( &psz_uri, "%s" DIR_SEP "ml.xspf", psz_datadir ) == -1 )
123     {
124         psz_uri = NULL;
125         goto error;
126     }
127     struct stat p_stat;
128     /* checks if media library file is present */
129     if( utf8_stat( psz_uri , &p_stat ) )
130     {
131         free( psz_uri );
132         return VLC_EGENERIC;
133     }
134     free( psz_uri );
135
136     if( asprintf( &psz_uri, "file/xspf-open://%s" DIR_SEP "ml.xspf",
137                   psz_datadir ) == -1 )
138     {
139         psz_uri = NULL;
140         goto error;
141     }
142
143     const char *const psz_option = "meta-file";
144     /* that option has to be cleaned in input_item_subitem_added() */
145     /* vlc_gc_decref() in the same function */
146     p_input = input_ItemNewExt( p_playlist, psz_uri,
147                                 _("Media Library"), 1, &psz_option, -1 );
148     if( p_input == NULL )
149         goto error;
150
151     PL_LOCK;
152     if( p_playlist->p_ml_onelevel->p_input )
153         vlc_gc_decref( p_playlist->p_ml_onelevel->p_input );
154     if( p_playlist->p_ml_category->p_input )
155         vlc_gc_decref( p_playlist->p_ml_category->p_input );
156
157     p_playlist->p_ml_onelevel->p_input =
158     p_playlist->p_ml_category->p_input = p_input;
159     /* We save the input at two different place, incref */
160     vlc_gc_incref( p_input );
161     vlc_gc_incref( p_input );
162
163     vlc_event_attach( &p_input->event_manager, vlc_InputItemSubItemAdded,
164                         input_item_subitem_added, p_playlist );
165
166     p_playlist->b_doing_ml = VLC_TRUE;
167     PL_UNLOCK;
168
169     stats_TimerStart( p_playlist, "ML Load", STATS_TIMER_ML_LOAD );
170     input_Read( p_playlist, p_input, VLC_TRUE );
171     stats_TimerStop( p_playlist,STATS_TIMER_ML_LOAD );
172
173     PL_LOCK;
174     p_playlist->b_doing_ml = VLC_FALSE;
175     PL_UNLOCK;
176
177     vlc_event_detach( &p_input->event_manager, vlc_InputItemSubItemAdded,
178                         input_item_subitem_added, p_playlist );
179
180     vlc_gc_decref( p_input );
181     free( psz_uri );
182     return VLC_SUCCESS;
183
184 error:
185     free( psz_uri );
186     return VLC_ENOMEM;
187 }
188
189 int playlist_MLDump( playlist_t *p_playlist )
190 {
191     char *psz_datadir = p_playlist->p_libvlc->psz_datadir;
192     if( !config_GetInt( p_playlist, "media-library") ) return VLC_SUCCESS;
193     if( !psz_datadir ) /* XXX: This should never happen */
194     {
195         msg_Err( p_playlist, "no data directory, cannot save media library") ;
196         return VLC_EGENERIC;
197     }
198
199     char psz_dirname[ strlen( psz_datadir )
200                       + sizeof( DIR_SEP "ml.xspf")];
201     sprintf( psz_dirname, "%s", psz_datadir );
202     if( config_CreateDir( (vlc_object_t *)p_playlist, psz_dirname ) )
203     {
204         return VLC_EGENERIC;
205     }
206
207     strcat( psz_dirname, DIR_SEP "ml.xspf" );
208
209     stats_TimerStart( p_playlist, "ML Dump", STATS_TIMER_ML_DUMP );
210     playlist_Export( p_playlist, psz_dirname, p_playlist->p_ml_category,
211                      "export-xspf" );
212     stats_TimerStop( p_playlist, STATS_TIMER_ML_DUMP );
213
214     return VLC_SUCCESS;
215 }