modules/demux/playlist/pls.c

   1 /*****************************************************************************
   2  * pls.c : PLS playlist format import
   3  *****************************************************************************
   4  * Copyright (C) 2004 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  * Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU Lesser General Public License as published by
  12  * the Free Software Foundation; either version 2.1 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public License
  21  * along with this program; if not, write to the Free Software Foundation,
  22  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc_common.h>
  33 #include <vlc_access.h>
  34 #include <vlc_charset.h>
  35
  36 #include "playlist.h"
  37
  38 /*****************************************************************************
  39  * Local prototypes
  40  *****************************************************************************/
  41 static int ReadDir( stream_t *, input_item_node_t * );
  42
  43 /*****************************************************************************
  44  * Import_PLS: main import function
  45  *****************************************************************************/
  46 int Import_PLS( vlc_object_t *p_this )
  47 {
  48     stream_t *p_demux = (stream_t *)p_this;
  49     const uint8_t *p_peek;
  50
  51     CHECK_FILE(p_demux);
  52
  53     if( vlc_stream_Peek( p_demux->s, &p_peek, 10 ) < 10 ) {
  54         msg_Dbg( p_demux, "not enough data" );
  55         return VLC_EGENERIC;
  56     }
  57
  58     if( strncasecmp( (const char *)p_peek, "[playlist]", 10 )
  59      && strncasecmp( (const char *)p_peek, "[Reference]", 10 )
  60      && !stream_HasExtension( p_demux, ".pls" ) )
  61         return VLC_EGENERIC;
  62
  63     msg_Dbg( p_demux, "found valid PLS playlist file");
  64     p_demux->pf_readdir = ReadDir;
  65     p_demux->pf_control = access_vaDirectoryControlHelper;
  66
  67     return VLC_SUCCESS;
  68 }
  69
  70 static int ReadDir( stream_t *p_demux, input_item_node_t *p_subitems )
  71 {
  72     char          *psz_name = NULL;
  73     char          *psz_line;
  74     char          *psz_mrl = NULL;
  75     char          *psz_mrl_orig = NULL;
  76     char          *psz_key;
  77     char          *psz_value;
  78     int            i_item = -1;
  79     input_item_t *p_input;
  80     bool ascii = true;
  81     bool unicode = true;
  82
  83     input_item_t *p_current_input = GetCurrentItem(p_demux);
  84
  85     while( ( psz_line = vlc_stream_ReadLine( p_demux->s ) ) )
  86     {
  87         if (ascii && !IsASCII(psz_line))
  88         {
  89             unicode = IsUTF8(psz_line);
  90             ascii = false;
  91         }
  92
  93         if (!unicode)
  94         {
  95             char *latin = FromLatin1(psz_line);
  96             free(psz_line);
  97             psz_line = latin;
  98         }
  99
 100         if( !strncasecmp( psz_line, "[playlist]", sizeof("[playlist]")-1 ) ||
 101             !strncasecmp( psz_line, "[Reference]", sizeof("[Reference]")-1 ) )
 102         {
 103             free( psz_line );
 104             continue;
 105         }
 106         psz_key = psz_line;
 107         psz_value = strchr( psz_line, '=' );
 108         if( psz_value )
 109         {
 110             *psz_value='\0';
 111             psz_value++;
 112         }
 113         else
 114         {
 115             free( psz_line );
 116             continue;
 117         }
 118         if( !strcasecmp( psz_key, "version" ) )
 119         {
 120             msg_Dbg( p_demux, "pls file version: %s", psz_value );
 121             free( psz_line );
 122             continue;
 123         }
 124         if( !strcasecmp( psz_key, "numberofentries" ) )
 125         {
 126             msg_Dbg( p_demux, "pls should have %d entries", atoi(psz_value) );
 127             free( psz_line);
 128             continue;
 129         }
 130
 131         /* find the number part of of file1, title1 or length1 etc */
 132         int i_new_item;
 133         if( sscanf( psz_key, "%*[^0-9]%d", &i_new_item ) != 1 )
 134         {
 135             msg_Warn( p_demux, "couldn't find number of items" );
 136             free( psz_line );
 137             continue;
 138         }
 139
 140         if( i_item == -1 )
 141             i_item = i_new_item;
 142         else if( i_item != i_new_item )
 143         {
 144             /* we found a new item, insert the previous */
 145             if( psz_mrl )
 146             {
 147                 p_input = input_item_New( psz_mrl, psz_name );
 148                 input_item_CopyOptions( p_input, p_current_input );
 149                 input_item_node_AppendItem( p_subitems, p_input );
 150                 input_item_Release( p_input );
 151                 free( psz_mrl_orig );
 152                 psz_mrl_orig = psz_mrl = NULL;
 153             }
 154             else
 155             {
 156                 msg_Warn( p_demux, "no file= part found for item %d", i_item );
 157             }
 158             free( psz_name );
 159             psz_name = NULL;
 160             i_item = i_new_item;
 161         }
 162
 163         if( !strncasecmp( psz_key, "file", sizeof("file") -1 ) ||
 164             !strncasecmp( psz_key, "Ref", sizeof("Ref") -1 ) )
 165         {
 166             free( psz_mrl_orig );
 167             psz_mrl_orig =
 168             psz_mrl = ProcessMRL( psz_value, p_demux->psz_url );
 169
 170             if( !strncasecmp( psz_key, "Ref", sizeof("Ref") -1 ) )
 171             {
 172                 if( !strncasecmp( psz_mrl, "http://", sizeof("http://") -1 ) )
 173                     memcpy( psz_mrl, "mmsh", 4 );
 174             }
 175         }
 176         else if( !strncasecmp( psz_key, "title", sizeof("title") -1 ) )
 177         {
 178             free( psz_name );
 179             psz_name = strdup( psz_value );
 180         }
 181         else if( !strncasecmp( psz_key, "length", sizeof("length") -1 ) )
 182             /* duration in seconds */;
 183         else
 184         {
 185             msg_Warn( p_demux, "unknown key found in pls file: %s", psz_key );
 186         }
 187         free( psz_line );
 188     }
 189     /* Add last object */
 190     if( psz_mrl )
 191     {
 192         p_input = input_item_New( psz_mrl, psz_name );
 193         input_item_CopyOptions( p_input, p_current_input );
 194         input_item_node_AppendItem( p_subitems, p_input );
 195         input_item_Release( p_input );
 196         free( psz_mrl_orig );
 197     }
 198     else
 199     {
 200         msg_Warn( p_demux, "no file= part found for item %d", i_item );
 201     }
 202     free( psz_name );
 203     psz_name = NULL;
 204
 205     return VLC_SUCCESS;
 206 }