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[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 "playlist_internal.h"
26 #include "modules/configuration.h"
27 #include <vlc_charset.h>
28
29 #include <sys/types.h>
30 #include <sys/stat.h>
31 #include <unistd.h>
32 #include <errno.h>
33
34 int playlist_Export( playlist_t * p_playlist, const char *psz_filename ,
35                      playlist_item_t *p_export_root,const char *psz_type )
36 {
37     module_t *p_module;
38     playlist_export_t *p_export;
39
40     if( p_export_root == NULL ) return VLC_EGENERIC;
41
42     msg_Info( p_playlist, "saving %s to file %s",
43                     p_export_root->p_input->psz_name, psz_filename );
44
45     /* Prepare the playlist_export_t structure */
46     p_export = (playlist_export_t *)malloc( sizeof(playlist_export_t) );
47     if( !p_export)
48     {
49         msg_Err( p_playlist, "out of memory" );
50         return VLC_ENOMEM;
51     }
52     p_export->psz_filename = NULL;
53     if ( psz_filename )
54         p_export->psz_filename = strdup( psz_filename );
55     p_export->p_file = utf8_fopen( psz_filename, "wt" );
56     if( !p_export->p_file )
57     {
58         msg_Err( p_playlist , "could not create playlist file %s"
59                  " (%s)", psz_filename, strerror(errno) );
60         return VLC_EGENERIC;
61     }
62
63     p_export->p_root = p_export_root;
64
65     /* Lock the playlist */
66     vlc_mutex_lock( &p_playlist->object_lock );
67     p_playlist->p_private = (void *)p_export;
68
69     /* And call the module ! All work is done now */
70     p_module = module_Need( p_playlist, "playlist export", psz_type, VLC_TRUE);
71     if( !p_module )
72     {
73         msg_Warn( p_playlist, "exporting playlist failed" );
74         vlc_mutex_unlock( &p_playlist->object_lock );
75         return VLC_ENOOBJ;
76     }
77     module_Unneed( p_playlist , p_module );
78
79     /* Clean up */
80     fclose( p_export->p_file );
81     if ( p_export->psz_filename )
82         free( p_export->psz_filename );
83     free ( p_export );
84     p_playlist->p_private = NULL;
85     vlc_mutex_unlock( &p_playlist->object_lock );
86
87     return VLC_SUCCESS;
88 }
89
90 int playlist_MLLoad( playlist_t *p_playlist )
91 {
92     const char *psz_datadir = p_playlist->p_libvlc->psz_datadir;
93     char *psz_uri = NULL;
94     input_item_t *p_input;
95
96     if( !config_GetInt( p_playlist, "media-library") ) return VLC_SUCCESS;
97     if( !psz_datadir ) /* XXX: This should never happen */
98     {
99         msg_Err( p_playlist, "no data directory, cannot load media library") ;
100         return VLC_EGENERIC;
101     }
102
103     if( asprintf( &psz_uri, "%s" DIR_SEP "ml.xsp", psz_datadir ) == -1 )
104     {
105         psz_uri = NULL;
106         goto error;
107     }
108     struct stat p_stat;
109     /* checks if media library file is present */
110     if( utf8_stat( psz_uri , &p_stat ) )
111     {
112         free( psz_uri );
113         return VLC_EGENERIC;
114     }
115     free( psz_uri );
116
117     if( asprintf( &psz_uri, "file/xspf-open://%s" DIR_SEP "ml.xsp",
118                   psz_datadir ) == -1 )
119     {
120         psz_uri = NULL;
121         goto error;
122     }
123
124     p_input = input_ItemNewExt( p_playlist, psz_uri,
125                                 _("Media Library"), 0, NULL, -1 );
126     if( p_input == NULL )
127         goto error;
128
129     playlist_AddInput( p_playlist, p_input, PLAYLIST_APPEND, 0, VLC_FALSE,
130                         VLC_FALSE );
131
132     p_playlist->b_doing_ml = VLC_TRUE;
133     stats_TimerStart( p_playlist, "ML Load", STATS_TIMER_ML_LOAD );
134     input_Read( p_playlist, p_input, VLC_TRUE );
135     stats_TimerStop( p_playlist,STATS_TIMER_ML_LOAD );
136     p_playlist->b_doing_ml = VLC_FALSE;
137
138     free( psz_uri );
139     return VLC_SUCCESS;
140
141 error:
142     free( psz_uri );
143     return VLC_ENOMEM;
144 }
145
146 int playlist_MLDump( playlist_t *p_playlist )
147 {
148     char *psz_datadir = p_playlist->p_libvlc->psz_datadir;
149     if( !config_GetInt( p_playlist, "media-library") ) return VLC_SUCCESS;
150     if( !psz_datadir ) /* XXX: This should never happen */
151     {
152         msg_Err( p_playlist, "no data directory, cannot save media library") ;
153         return VLC_EGENERIC;
154     }
155
156     char psz_dirname[ strlen( psz_datadir )
157                       + sizeof( DIR_SEP "ml.xsl")];
158     sprintf( psz_dirname, "%s", psz_datadir );
159     if( config_CreateDir( (vlc_object_t *)p_playlist, psz_dirname ) )
160     {
161         return VLC_EGENERIC;
162     }
163
164     strcat( psz_dirname, DIR_SEP "ml.xsp" );
165
166     stats_TimerStart( p_playlist, "ML Dump", STATS_TIMER_ML_DUMP );
167     playlist_Export( p_playlist, psz_dirname, p_playlist->p_ml_category,
168                      "export-xspf" );
169     stats_TimerStop( p_playlist, STATS_TIMER_ML_DUMP );
170
171     return VLC_SUCCESS;
172 }