1 /*****************************************************************************
2 * b4s.c : B4S playlist format import
3 *****************************************************************************
4 * Copyright (C) 2005-2009 VLC authors and VideoLAN
7 * Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU Lesser General Public License as published by
11 * the Free Software Foundation; either version 2.1 of the License, or
12 * (at your option) any later version.
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 Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_demux.h>
35 #include <vlc_strings.h>
39 /*****************************************************************************
41 *****************************************************************************/
42 static int Demux( demux_t *p_demux);
43 static bool IsWhitespace( const char *psz_string );
45 /*****************************************************************************
46 * Import_B4S: main import function
47 *****************************************************************************/
48 int Import_B4S( vlc_object_t *p_this )
50 demux_t *demux = (demux_t *)p_this;
52 if( !demux_IsPathExtension( demux, ".b4s" )
53 && !demux_IsForced( demux, "b4s-open" ) )
56 demux->pf_demux = Demux;
57 demux->pf_control = Control;
62 static int Demux( demux_t *p_demux )
66 xml_reader_t *p_xml_reader = NULL;
67 char *psz_elname = NULL;
69 input_item_t *p_input;
70 char *psz_mrl = NULL, *psz_title = NULL, *psz_genre = NULL;
71 char *psz_now = NULL, *psz_listeners = NULL, *psz_bitrate = NULL;
72 input_item_node_t *p_subitems = NULL;
74 input_item_t *p_current_input = GetCurrentItem(p_demux);
76 free( stream_ReadLine( p_demux->s ) );
78 p_xml_reader = xml_ReaderCreate( p_demux, p_demux->s );
84 if( xml_ReaderNextNode( p_xml_reader, &node ) != XML_READER_STARTELEM )
86 msg_Err( p_demux, "invalid file (no root node)" );
90 if( strcmp( node, "WinampXML" ) )
92 msg_Err( p_demux, "invalid root node: %s", node );
96 /* root node should not have any attributes, and should only
97 * contain the "playlist node */
99 /* Skip until 1st child node */
100 while( (i_ret = xml_ReaderNextNode( p_xml_reader, &node )) != XML_READER_STARTELEM )
103 msg_Err( p_demux, "invalid file (no child node)" );
107 if( strcmp( node, "playlist" ) )
109 msg_Err( p_demux, "invalid child node %s", node );
113 // Read the attributes
114 const char *attr, *value;
115 while( (attr = xml_ReaderNextAttr( p_xml_reader, &value )) != NULL )
117 if( !strcmp( attr, "num_entries" ) )
118 msg_Dbg( p_demux, "playlist has %d entries", atoi(value) );
119 else if( !strcmp( attr, "label" ) )
120 input_item_SetName( p_current_input, value );
122 msg_Warn( p_demux, "stray attribute %s with value %s in element"
123 " <playlist>", attr, value );
126 p_subitems = input_item_node_Create( p_current_input );
128 while( (i_ret = xml_ReaderNextNode( p_xml_reader, &node )) > 0 )
133 case XML_READER_STARTELEM:
135 // Read the element name
137 psz_elname = strdup( node );
138 if( unlikely(!psz_elname) )
141 // Read the attributes
142 while( (attr = xml_ReaderNextAttr( p_xml_reader, &value )) )
144 if( !strcmp( psz_elname, "entry" ) &&
145 !strcmp( attr, "Playstring" ) )
148 psz_mrl = strdup( value );
152 msg_Warn( p_demux, "unexpected attribute %s in <%s>",
159 case XML_READER_TEXT:
163 if( psz_elname == NULL )
165 if( IsWhitespace( node ) )
167 if( !strcmp( psz_elname, "Name" ) )
169 else if( !strcmp( psz_elname, "Genre" ) )
171 else if( !strcmp( psz_elname, "Nowplaying" ) )
173 else if( !strcmp( psz_elname, "Listeners" ) )
175 else if( !strcmp( psz_elname, "Bitrate" ) )
179 msg_Warn( p_demux, "unexpected text in element <%s>",
189 case XML_READER_ENDELEM:
191 // Read the element name
192 if( !strcmp( node, "entry" ) )
194 resolve_xml_special_chars( psz_mrl );
195 p_input = input_item_New( psz_mrl, psz_title );
197 input_item_SetNowPlaying( p_input, psz_now );
199 input_item_SetGenre( p_input, psz_genre );
201 msg_Err( p_demux, "Unsupported meta listeners" );
203 msg_Err( p_demux, "Unsupported meta bitrate" );
205 input_item_node_AppendItem( p_subitems, p_input );
206 vlc_gc_decref( p_input );
207 FREENULL( psz_title );
209 FREENULL( psz_genre );
210 FREENULL( psz_bitrate );
211 FREENULL( psz_listeners );
214 FREENULL( psz_elname );
222 msg_Warn( p_demux, "error while parsing data" );
223 i_ret = 0; /* Needed for correct operation of go back */
230 input_item_node_PostAndDelete( p_subitems );
232 vlc_gc_decref( p_current_input );
234 xml_ReaderDelete( p_xml_reader );
238 static bool IsWhitespace( const char *psz_string )
240 psz_string += strspn( psz_string, " \t\r\n" );