git.sesse.net Git - vlc/blob - modules/misc/playlist/m3u.c

   1 /*****************************************************************************
   2  * m3u.c :  M3U playlist export module
   3  *****************************************************************************
   4  * Copyright (C) 2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>                                      /* malloc(), free() */
  28
  29 #include <vlc/vlc.h>
  30 #include <vlc/intf.h>
  31
  32 #include <errno.h>                                                 /* ENOMEM */
  33
  34 /*****************************************************************************
  35  * Local prototypes
  36  *****************************************************************************/
  37 int Export_M3U ( vlc_object_t * );
  38
  39 /*****************************************************************************
  40  * Export_M3U: main export function
  41  *****************************************************************************/
  42 int Export_M3U( vlc_object_t *p_this )
  43 {
  44     playlist_t *p_playlist = (playlist_t*)p_this;
  45     playlist_export_t *p_export = (playlist_export_t *)p_playlist->p_private;
  46     int i, j;
  47
  48     msg_Dbg(p_playlist, "Saving using M3U format");
  49
  50     /* Write header */
  51     fprintf( p_export->p_file, "#EXTM3U\n" );
  52
  53     /* Go through the playlist and add items */
  54     for( i = 0; i< p_playlist->i_size ; i++)
  55     {
  56         if( (p_playlist->pp_items[i]->i_flags & PLAYLIST_SAVE_FLAG) == 0 )
  57         {
  58             continue;
  59         }
  60
  61         /* General info */
  62         if( p_playlist->pp_items[i]->input.psz_name &&
  63              strcmp( p_playlist->pp_items[i]->input.psz_name,
  64                     p_playlist->pp_items[i]->input.psz_uri ) )
  65         {
  66             char *psz_author =
  67                    vlc_input_item_GetInfo( &p_playlist->pp_items[i]->input,
  68                                          _("Meta-information"), _("Artist") );
  69             if( psz_author && *psz_author )
  70             {
  71                 /* the author must be escaped if it contains a comma */
  72                 char *p_src; short i_cnt;
  73                 /* so count the commas or backslash */
  74                 for( i_cnt = 0, p_src = psz_author; *p_src; p_src++ )
  75                     if(*p_src == ',' || *p_src == '\\' )
  76                         i_cnt++;
  77                 /* Is there a comma ? */
  78                 if( i_cnt )
  79                 {
  80                     char *psz_escaped=NULL;
  81                     char *p_dst;
  82                     psz_escaped = (char *)malloc( ( strlen( psz_author )
  83                                              + i_cnt + 1 ) * sizeof( char ) );
  84                     if( !psz_escaped )
  85                         return VLC_ENOMEM;
  86                     /* copy the string and escape every comma with backslash */
  87                     for( p_src=psz_author, p_dst=psz_escaped; *p_src;
  88                          p_src++, p_dst++ )
  89                     {
  90                         if( *p_src == ',' || *p_src == '\\' )
  91                             *p_dst++ = '\\';
  92                         *p_dst = *p_src;
  93                     }
  94                     *p_dst = '\0';
  95                     free( psz_author);
  96                     psz_author = psz_escaped;
  97                 }
  98                 fprintf( p_export->p_file, "#EXTINF:%i,%s,%s\n",
  99                        (int)(p_playlist->pp_items[i]->input.i_duration/1000000),
 100                          psz_author,
 101                          p_playlist->pp_items[i]->input.psz_name );
 102             }
 103             else
 104             {
 105                 /* write EXTINF without author */
 106                 fprintf( p_export->p_file, "#EXTINF:%i,,%s\n",
 107                        (int)(p_playlist->pp_items[i]->input.i_duration/1000000),
 108                          p_playlist->pp_items[i]->input.psz_name );
 109             }
 110             if( psz_author )
 111                 free( psz_author );
 112         }
 113
 114         /* VLC specific options */
 115         for( j = 0; j < p_playlist->pp_items[i]->input.i_options; j++ )
 116         {
 117             fprintf( p_export->p_file, "#EXTVLCOPT:%s\n",
 118                      p_playlist->pp_items[i]->input.ppsz_options[j][0] == ':' ?
 119                      p_playlist->pp_items[i]->input.ppsz_options[j] + 1 :
 120                      p_playlist->pp_items[i]->input.ppsz_options[j] );
 121         }
 122
 123         fprintf( p_export->p_file, "%s\n",
 124                  p_playlist->pp_items[i]->input.psz_uri );
 125     }
 126     return VLC_SUCCESS;
 127 }