git.sesse.net Git - vlc/blob - modules/demux/playlist/podcast.c

   1 /*****************************************************************************
   2  * podcast.c : podcast playlist imports
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea -at- videolan -dot- 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
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <ctype.h>                                              /* isspace() */
  28
  29 #include <vlc/vlc.h>
  30 #include <vlc/input.h>
  31 #include <vlc/intf.h>
  32
  33 #include "playlist.h"
  34 #include "vlc_xml.h"
  35
  36 struct demux_sys_t
  37 {
  38     char *psz_prefix;
  39     playlist_t *p_playlist;
  40     xml_t *p_xml;
  41     xml_reader_t *p_xml_reader;
  42 };
  43
  44 /*****************************************************************************
  45  * Local prototypes
  46  *****************************************************************************/
  47 static int Demux( demux_t *p_demux);
  48 static int Control( demux_t *p_demux, int i_query, va_list args );
  49
  50 /*****************************************************************************
  51  * Import_podcast: main import function
  52  *****************************************************************************/
  53 int E_(Import_podcast)( vlc_object_t *p_this )
  54 {
  55     demux_t *p_demux = (demux_t *)p_this;
  56
  57     if( !isDemux( p_demux, "podcast" ) )
  58         return VLC_EGENERIC;
  59
  60     STANDARD_DEMUX_INIT_MSG( "using podcast reader" );
  61     p_demux->p_sys->psz_prefix = E_(FindPrefix)( p_demux );
  62     p_demux->p_sys->p_playlist = NULL;
  63     p_demux->p_sys->p_xml = NULL;
  64     p_demux->p_sys->p_xml_reader = NULL;
  65
  66     return VLC_SUCCESS;
  67 }
  68
  69 /*****************************************************************************
  70  * Deactivate: frees unused data
  71  *****************************************************************************/
  72 void E_(Close_podcast)( vlc_object_t *p_this )
  73 {
  74     demux_t *p_demux = (demux_t *)p_this;
  75     demux_sys_t *p_sys = p_demux->p_sys;
  76
  77     if( p_sys->psz_prefix ) free( p_sys->psz_prefix );
  78     if( p_sys->p_playlist ) vlc_object_release( p_sys->p_playlist );
  79     if( p_sys->p_xml_reader ) xml_ReaderDelete( p_sys->p_xml, p_sys->p_xml_reader );
  80     if( p_sys->p_xml ) xml_Delete( p_sys->p_xml );
  81     free( p_sys );
  82 }
  83
  84 /* "specs" : http://phobos.apple.com/static/iTunesRSS.html */
  85 static int Demux( demux_t *p_demux )
  86 {
  87     demux_sys_t *p_sys = p_demux->p_sys;
  88
  89     vlc_bool_t b_item = VLC_FALSE;
  90     vlc_bool_t b_image = VLC_FALSE;
  91     int i_ret;
  92
  93     xml_t *p_xml;
  94     xml_reader_t *p_xml_reader;
  95     char *psz_elname = NULL;
  96     char *psz_item_mrl = NULL;
  97     char *psz_item_size = NULL;
  98     char *psz_item_type = NULL;
  99     char *psz_item_name = NULL;
 100     char *psz_item_date = NULL;
 101     char *psz_item_author = NULL;
 102     char *psz_item_category = NULL;
 103     char *psz_item_duration = NULL;
 104     char *psz_item_keywords = NULL;
 105     char *psz_item_subtitle = NULL;
 106     char *psz_item_summary = NULL;
 107     int i_type;
 108
 109     INIT_PLAYLIST_STUFF;
 110
 111     p_xml = p_sys->p_xml = xml_Create( p_demux );
 112     if( !p_xml ) return -1;
 113
 114 /*    psz_elname = stream_ReadLine( p_demux->s );
 115     if( psz_elname ) free( psz_elname );
 116     psz_elname = 0;*/
 117
 118     p_xml_reader = xml_ReaderCreate( p_xml, p_demux->s );
 119     if( !p_xml_reader ) return -1;
 120     p_sys->p_xml_reader = p_xml_reader;
 121
 122     /* xml */
 123     /* check root node */
 124     if( xml_ReaderRead( p_xml_reader ) != 1 )
 125     {
 126         msg_Err( p_demux, "invalid file (no root node)" );
 127         return -1;
 128     }
 129     if( xml_ReaderNodeType( p_xml_reader ) != XML_READER_STARTELEM ||
 130         ( psz_elname = xml_ReaderName( p_xml_reader ) ) == NULL ||
 131         strcmp( psz_elname, "rss" ) )
 132     {
 133         msg_Err( p_demux, "invalid root node %i, %s",
 134                  xml_ReaderNodeType( p_xml_reader ), psz_elname );
 135         if( psz_elname ) free( psz_elname );
 136         return -1;
 137     }
 138     free( psz_elname ); psz_elname = NULL;
 139
 140     while( (i_ret = xml_ReaderRead( p_xml_reader )) == 1 )
 141     {
 142         // Get the node type
 143         i_type = xml_ReaderNodeType( p_xml_reader );
 144         switch( i_type )
 145         {
 146             // Error
 147             case -1:
 148                 return -1;
 149                 break;
 150
 151             case XML_READER_STARTELEM:
 152             {
 153                 // Read the element name
 154                 if( psz_elname ) free( psz_elname );
 155                 psz_elname = xml_ReaderName( p_xml_reader );
 156                 if( !psz_elname ) return -1;
 157
 158                 if( !strcmp( psz_elname, "item" ) )
 159                 {
 160                     b_item = VLC_TRUE;
 161                 }
 162                 else if( !strcmp( psz_elname, "image" ) )
 163                 {
 164                     b_item = VLC_TRUE;
 165                 }
 166
 167                 // Read the attributes
 168                 while( xml_ReaderNextAttr( p_xml_reader ) == VLC_SUCCESS )
 169                 {
 170                     char *psz_name = xml_ReaderName( p_xml_reader );
 171                     char *psz_value = xml_ReaderValue( p_xml_reader );
 172                     if( !psz_name || !psz_value ) return -1;
 173                     if( !strcmp( psz_elname, "enclosure" ) &&
 174                         !strcmp( psz_name, "url" ) )
 175                     {
 176                         psz_item_mrl = strdup( psz_value );
 177                     }
 178                     else if( !strcmp( psz_elname, "enclosure" ) &&
 179                         !strcmp( psz_name, "length" ) )
 180                     {
 181                         psz_item_size = strdup( psz_value );
 182                     }
 183                     else if( !strcmp( psz_elname, "enclosure" ) &&
 184                         !strcmp( psz_name, "type" ) )
 185                     {
 186                         psz_item_type = strdup( psz_value );
 187                     }
 188                     else
 189                     {
 190                         msg_Dbg( p_demux,"unhandled attribure %s in element %s",
 191                                   psz_name, psz_elname );
 192                     }
 193                     free( psz_name );
 194                     free( psz_value );
 195                 }
 196                 break;
 197             }
 198             case XML_READER_TEXT:
 199             {
 200                 char *psz_text = xml_ReaderValue( p_xml_reader );
 201                 /* item specific meta data */
 202                 if( b_item == VLC_TRUE && !strcmp( psz_elname, "title" ) )
 203                 {
 204                     psz_item_name = strdup( psz_text );
 205                 }
 206                 else if( b_item == VLC_TRUE
 207                          && !strcmp( psz_elname, "pubDate" ) )
 208                 {
 209                     psz_item_date = strdup( psz_text );
 210                 }
 211                 else if( b_item == VLC_TRUE
 212                          && ( !strcmp( psz_elname, "itunes:author" )
 213                             ||!strcmp( psz_elname, "author" ) ) )
 214                 { /* <author> isn't standard iTunes podcast stuff */
 215                     psz_item_author = strdup( psz_text );
 216                 }
 217                 else if( b_item == VLC_TRUE
 218                          && !strcmp( psz_elname, "itunes:category" ) )
 219                 {
 220                     psz_item_category = strdup( psz_text );
 221                 }
 222                 else if( b_item == VLC_TRUE
 223                          && !strcmp( psz_elname, "itunes:duration" ) )
 224                 {
 225                     psz_item_duration = strdup( psz_text );
 226                 }
 227                 else if( b_item == VLC_TRUE
 228                          && !strcmp( psz_elname, "itunes:keywords" ) )
 229                 {
 230                     psz_item_keywords = strdup( psz_text );
 231                 }
 232                 else if( b_item == VLC_TRUE
 233                          && !strcmp( psz_elname, "itunes:subtitle" ) )
 234                 {
 235                     psz_item_subtitle = strdup( psz_text );
 236                 }
 237                 else if( b_item == VLC_TRUE
 238                          && ( !strcmp( psz_elname, "itunes:summary" )
 239                             ||!strcmp( psz_elname, "description" ) ) )
 240                 { /* <description> isn't standard iTunes podcast stuff */
 241                     psz_item_summary = strdup( psz_text );
 242                 }
 243                 /* toplevel meta data */
 244                 else if( b_item == VLC_FALSE && b_image == VLC_FALSE
 245                          && !strcmp( psz_elname, "title" ) )
 246                 {
 247                     playlist_ItemSetName( p_current, psz_text );
 248                 }
 249                 else if( b_item == VLC_FALSE && b_image == VLC_FALSE
 250                          && !strcmp( psz_elname, "link" ) )
 251                 {
 252                     vlc_input_item_AddInfo( p_current->p_input,
 253                                             _( "Podcast Info" ),
 254                                             _( "Podcast Link" ),
 255                                             "%s",
 256                                             psz_text );
 257                 }
 258                 else if( b_item == VLC_FALSE && b_image == VLC_FALSE
 259                          && !strcmp( psz_elname, "copyright" ) )
 260                 {
 261                     vlc_input_item_AddInfo( p_current->p_input,
 262                                             _( "Podcast Info" ),
 263                                             _( "Podcast Copyright" ),
 264                                             "%s",
 265                                             psz_text );
 266                 }
 267                 else if( b_item == VLC_FALSE && b_image == VLC_FALSE
 268                          && !strcmp( psz_elname, "itunes:category" ) )
 269                 {
 270                     vlc_input_item_AddInfo( p_current->p_input,
 271                                             _( "Podcast Info" ),
 272                                             _( "Podcast Category" ),
 273                                             "%s",
 274                                             psz_text );
 275                 }
 276                 else if( b_item == VLC_FALSE && b_image == VLC_FALSE
 277                          && !strcmp( psz_elname, "itunes:keywords" ) )
 278                 {
 279                     vlc_input_item_AddInfo( p_current->p_input,
 280                                             _( "Podcast Info" ),
 281                                             _( "Podcast Keywords" ),
 282                                             "%s",
 283                                             psz_text );
 284                 }
 285                 else if( b_item == VLC_FALSE && b_image == VLC_FALSE
 286                          && !strcmp( psz_elname, "itunes:subtitle" ) )
 287                 {
 288                     vlc_input_item_AddInfo( p_current->p_input,
 289                                             _( "Podcast Info" ),
 290                                             _( "Podcast Subtitle" ),
 291                                             "%s",
 292                                             psz_text );
 293                 }
 294                 else if( b_item == VLC_FALSE && b_image == VLC_FALSE
 295                          && ( !strcmp( psz_elname, "itunes:summary" )
 296                             ||!strcmp( psz_elname, "description" ) ) )
 297                 { /* <description> isn't standard iTunes podcast stuff */
 298                     vlc_input_item_AddInfo( p_current->p_input,
 299                                             _( "Podcast Info" ),
 300                                             _( "Podcast Summary" ),
 301                                             "%s",
 302                                             psz_text );
 303                 }
 304                 else
 305                 {
 306                     msg_Dbg( p_demux, "unhandled text in element '%s'",
 307                               psz_elname );
 308                 }
 309                 free( psz_text );
 310                 break;
 311             }
 312             // End element
 313             case XML_READER_ENDELEM:
 314             {
 315                 // Read the element name
 316                 free( psz_elname );
 317                 psz_elname = xml_ReaderName( p_xml_reader );
 318                 if( !psz_elname ) return -1;
 319                 if( !strcmp( psz_elname, "item" ) )
 320                 {
 321                     p_input = input_ItemNewExt( p_playlist, psz_item_mrl,
 322                                                 psz_item_name, 0, NULL, -1 );
 323                     if( p_input == NULL ) break;
 324                     if( psz_item_date )
 325                     {
 326                         vlc_input_item_AddInfo( p_input,
 327                                                 _( "Podcast Info" ),
 328                                                 _( "Podcast Publication Date" ),
 329                                                 "%s",
 330                                                 psz_item_date );
 331                     }
 332                     if( psz_item_author )
 333                     {
 334                         vlc_input_item_AddInfo( p_input,
 335                                                 _( "Podcast Info" ),
 336                                                 _( "Podcast Author" ),
 337                                                 "%s",
 338                                                 psz_item_author );
 339                     }
 340                     if( psz_item_category )
 341                     {
 342                         vlc_input_item_AddInfo( p_input,
 343                                                 _( "Podcast Info" ),
 344                                                 _( "Podcast Subcategory" ),
 345                                                 "%s",
 346                                                 psz_item_category );
 347                     }
 348                     if( psz_item_duration )
 349                     {
 350                         vlc_input_item_AddInfo( p_input,
 351                                                 _( "Podcast Info" ),
 352                                                 _( "Podcast Duration" ),
 353                                                 "%s",
 354                                                 psz_item_duration );
 355                     }
 356                     if( psz_item_keywords )
 357                     {
 358                         vlc_input_item_AddInfo( p_input,
 359                                                 _( "Podcast Info" ),
 360                                                 _( "Podcast Keywords" ),
 361                                                 "%s",
 362                                                 psz_item_keywords );
 363                     }
 364                     if( psz_item_subtitle )
 365                     {
 366                         vlc_input_item_AddInfo( p_input,
 367                                                 _( "Podcast Info" ),
 368                                                 _( "Podcast Subtitle" ),
 369                                                 "%s",
 370                                                 psz_item_subtitle );
 371                     }
 372                     if( psz_item_summary )
 373                     {
 374                         vlc_input_item_AddInfo( p_input,
 375                                                 _( "Podcast Info" ),
 376                                                 _( "Podcast Summary" ),
 377                                                 "%s",
 378                                                 psz_item_summary );
 379                     }
 380                     if( psz_item_size )
 381                     {
 382                         vlc_input_item_AddInfo( p_input,
 383                                                 _( "Podcast Info" ),
 384                                                 _( "Podcast Size" ),
 385                                                 "%s bytes",
 386                                                 psz_item_size );
 387                     }
 388                     if( psz_item_type )
 389                     {
 390                         vlc_input_item_AddInfo( p_input,
 391                                                 _( "Podcast Info" ),
 392                                                 _( "Podcast Type" ),
 393                                                 "%s",
 394                                                 psz_item_type );
 395                     }
 396
 397                     msg_Dbg( p_demux, "Adding WHEREVER\n" );
 398                     playlist_AddWhereverNeeded( p_playlist, p_input, p_current,
 399                           p_item_in_category, (i_parent_id > 0 ) ? VLC_TRUE:
 400                                                 VLC_FALSE, PLAYLIST_APPEND );
 401 #define FREE(a) if( a ) free( a ); a = NULL;
 402                     FREE( psz_item_name );
 403                     FREE( psz_item_mrl );
 404                     FREE( psz_item_size );
 405                     FREE( psz_item_type );
 406                     FREE( psz_item_date );
 407                     FREE( psz_item_author );
 408                     FREE( psz_item_category );
 409                     FREE( psz_item_duration );
 410                     FREE( psz_item_keywords );
 411                     FREE( psz_item_subtitle );
 412                     FREE( psz_item_summary );
 413 #undef FREE
 414
 415                     b_item = VLC_FALSE;
 416                 }
 417                 else if( !strcmp( psz_elname, "image" ) )
 418                 {
 419                     b_image = VLC_FALSE;
 420                 }
 421                 free( psz_elname );
 422                 psz_elname = strdup("");
 423
 424                 break;
 425             }
 426         }
 427     }
 428
 429     if( i_ret != 0 )
 430     {
 431         msg_Warn( p_demux, "error while parsing data" );
 432     }
 433
 434     HANDLE_PLAY_AND_RELEASE;
 435     return VLC_SUCCESS;
 436 }
 437
 438 static int Control( demux_t *p_demux, int i_query, va_list args )
 439 {
 440     return VLC_EGENERIC;
 441 }