e4a327c5b7fb760ae6d7c7faa6a7e10e6ec77fd3
[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 #include <vlc/vlc.h>
24 #include <vlc_playlist.h>
25 #include <vlc_events.h>
26 #include "playlist_internal.h"
27 #include "modules/configuration.h"
28 #include <vlc_charset.h>
29
30 #include <sys/types.h>
31 #include <sys/stat.h>
32 #include <unistd.h>
33 #include <errno.h>
34
35 int playlist_Export( playlist_t * p_playlist, const char *psz_filename ,
36                      playlist_item_t *p_export_root,const char *psz_type )
37 {
38     module_t *p_module;
39     playlist_export_t *p_export;
40
41     if( p_export_root == NULL ) return VLC_EGENERIC;
42
43     msg_Info( p_playlist, "saving %s to file %s",
44                     p_export_root->p_input->psz_name, psz_filename );
45
46     /* Prepare the playlist_export_t structure */
47     p_export = (playlist_export_t *)malloc( sizeof(playlist_export_t) );
48     if( !p_export)
49     {
50         msg_Err( p_playlist, "out of memory" );
51         return VLC_ENOMEM;
52     }
53     p_export->psz_filename = NULL;
54     if ( psz_filename )
55         p_export->psz_filename = strdup( psz_filename );
56     p_export->p_file = utf8_fopen( psz_filename, "wt" );
57     if( !p_export->p_file )
58     {
59         msg_Err( p_playlist , "could not create playlist file %s (%m)",
60                  psz_filename );
61         return VLC_EGENERIC;
62     }
63
64     p_export->p_root = p_export_root;
65
66     /* Lock the playlist */
67     vlc_mutex_lock( &p_playlist->object_lock );
68     p_playlist->p_private = (void *)p_export;
69
70     /* And call the module ! All work is done now */
71     p_module = module_Need( p_playlist, "playlist export", psz_type, VLC_TRUE);
72     if( !p_module )
73     {
74         msg_Warn( p_playlist, "exporting playlist failed" );
75         vlc_mutex_unlock( &p_playlist->object_lock );
76         return VLC_ENOOBJ;
77     }
78     module_Unneed( p_playlist , p_module );
79
80     /* Clean up */
81     fclose( p_export->p_file );
82     if ( p_export->psz_filename )
83         free( p_export->psz_filename );
84     free ( p_export );
85     p_playlist->p_private = NULL;
86     vlc_mutex_unlock( &p_playlist->object_lock );
87
88     return VLC_SUCCESS;
89 }
90
91 /*****************************************************************************
92  * A subitem has been added to the Media Library (Event Callback)
93  *****************************************************************************/
94 static void input_item_subitem_added( const vlc_event_t * p_event,
95                                       void * user_data )
96 {
97     playlist_t *p_playlist = user_data;
98     input_item_t *p_item = p_event->u.input_item_subitem_added.p_new_child;
99
100     /* The media library input has one and only one option: "meta-file"
101      * So we remove that unneeded option. */
102     free( p_item->ppsz_options[0] );
103     p_item->i_options = 0;
104
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.xsp", 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.xsp",
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     p_input = input_ItemNewExt( p_playlist, psz_uri,
146                                 _("Media Library"), 1, &psz_option, -1 );
147     if( p_input == NULL )
148         goto error;
149
150     p_playlist->p_ml_onelevel->p_input =
151     p_playlist->p_ml_category->p_input = p_input;
152
153     vlc_event_attach( &p_input->event_manager, vlc_InputItemSubItemAdded,
154                         input_item_subitem_added, p_playlist );
155
156     p_playlist->b_doing_ml = VLC_TRUE;
157     stats_TimerStart( p_playlist, "ML Load", STATS_TIMER_ML_LOAD );
158     input_Read( p_playlist, p_input, VLC_TRUE );
159     stats_TimerStop( p_playlist,STATS_TIMER_ML_LOAD );
160     p_playlist->b_doing_ml = VLC_FALSE;
161
162     vlc_event_detach( &p_input->event_manager, vlc_InputItemSubItemAdded,
163                         input_item_subitem_added, p_playlist );
164
165     free( psz_uri );
166     return VLC_SUCCESS;
167
168 error:
169     free( psz_uri );
170     return VLC_ENOMEM;
171 }
172
173 int playlist_MLDump( playlist_t *p_playlist )
174 {
175     char *psz_datadir = p_playlist->p_libvlc->psz_datadir;
176     if( !config_GetInt( p_playlist, "media-library") ) return VLC_SUCCESS;
177     if( !psz_datadir ) /* XXX: This should never happen */
178     {
179         msg_Err( p_playlist, "no data directory, cannot save media library") ;
180         return VLC_EGENERIC;
181     }
182
183     char psz_dirname[ strlen( psz_datadir )
184                       + sizeof( DIR_SEP "ml.xsl")];
185     sprintf( psz_dirname, "%s", psz_datadir );
186     if( config_CreateDir( (vlc_object_t *)p_playlist, psz_dirname ) )
187     {
188         return VLC_EGENERIC;
189     }
190
191     strcat( psz_dirname, DIR_SEP "ml.xsp" );
192
193     stats_TimerStart( p_playlist, "ML Dump", STATS_TIMER_ML_DUMP );
194     playlist_Export( p_playlist, psz_dirname, p_playlist->p_ml_category,
195                      "export-xspf" );
196     stats_TimerStop( p_playlist, STATS_TIMER_ML_DUMP );
197
198     return VLC_SUCCESS;
199 }