Removed b_block parameter from input_Read.
[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_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 );
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 );
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 }