src/playlist/search.c

   1 /*****************************************************************************
   2  * search.c : Search functions
   3  *****************************************************************************
   4  * Copyright (C) 1999-2009 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *
   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.
  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 Lesser General Public License for more details.
  18  *
  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  *****************************************************************************/
  23 #ifdef HAVE_CONFIG_H
  24 # include "config.h"
  25 #endif
  26 #include <assert.h>
  27
  28 #include <vlc_common.h>
  29 #include <vlc_playlist.h>
  30 #include <vlc_charset.h>
  31 #include "playlist_internal.h"
  32
  33 /***************************************************************************
  34  * Item search functions
  35  ***************************************************************************/
  36
  37 /***************************************************************************
  38  * Live search handling
  39  ***************************************************************************/
  40
  41 /**
  42  * Enable all items in the playlist
  43  * @param p_root: the current root item
  44  */
  45 static void playlist_LiveSearchClean( playlist_item_t *p_root )
  46 {
  47     for( int i = 0; i < p_root->i_children; i++ )
  48     {
  49         playlist_item_t *p_item = p_root->pp_children[i];
  50         if( p_item->i_children >= 0 )
  51             playlist_LiveSearchClean( p_item );
  52         p_item->i_flags &= ~PLAYLIST_DBL_FLAG;
  53     }
  54 }
  55
  56
  57 /**
  58  * Enable/Disable items in the playlist according to the search argument
  59  * @param p_root: the current root item
  60  * @param psz_string: the string to search
  61  * @return true if an item match
  62  */
  63 static bool playlist_LiveSearchUpdateInternal( playlist_item_t *p_root,
  64                                                const char *psz_string, bool b_recursive )
  65 {
  66     int i;
  67     bool b_match = false;
  68     for( i = 0 ; i < p_root->i_children ; i ++ )
  69     {
  70         bool b_enable = false;
  71         playlist_item_t *p_item = p_root->pp_children[i];
  72         // Go recurssively if their is some children
  73         if( b_recursive && p_item->i_children >= 0 &&
  74             playlist_LiveSearchUpdateInternal( p_item, psz_string, true ) )
  75         {
  76             b_enable = true;
  77         }
  78
  79         if( !b_enable )
  80         {
  81             vlc_mutex_lock( &p_item->p_input->lock );
  82             // Do we have some meta ?
  83             if( p_item->p_input->p_meta )
  84             {
  85                 // Use Title or fall back to psz_name
  86                 const char *psz_title = vlc_meta_Get( p_item->p_input->p_meta, vlc_meta_Title );
  87                 if( !psz_title )
  88                     psz_title = p_item->p_input->psz_name;
  89                 const char *psz_album = vlc_meta_Get( p_item->p_input->p_meta, vlc_meta_Album );
  90                 const char *psz_artist = vlc_meta_Get( p_item->p_input->p_meta, vlc_meta_Artist );
  91                 b_enable = ( psz_title && vlc_strcasestr( psz_title, psz_string ) ) ||
  92                            ( psz_album && vlc_strcasestr( psz_album, psz_string ) ) ||
  93                            ( psz_artist && vlc_strcasestr( psz_artist, psz_string ) );
  94             }
  95             else
  96                 b_enable = p_item->p_input->psz_name && vlc_strcasestr( p_item->p_input->psz_name, psz_string );
  97             vlc_mutex_unlock( &p_item->p_input->lock );
  98         }
  99
 100         if( b_enable )
 101             p_item->i_flags &= ~PLAYLIST_DBL_FLAG;
 102         else
 103             p_item->i_flags |= PLAYLIST_DBL_FLAG;
 104
 105         b_match |= b_enable;
 106    }
 107    return b_match;
 108 }
 109
 110
 111
 112 /**
 113  * Launch the recursive search in the playlist
 114  * @param p_playlist: the playlist
 115  * @param p_root: the current root item
 116  * @param psz_string: the string to find
 117  * @return VLC_SUCCESS
 118  */
 119 int playlist_LiveSearchUpdate( playlist_t *p_playlist, playlist_item_t *p_root,
 120                                const char *psz_string, bool b_recursive )
 121 {
 122     PL_ASSERT_LOCKED;
 123     pl_priv(p_playlist)->b_reset_currently_playing = true;
 124     if( *psz_string )
 125         playlist_LiveSearchUpdateInternal( p_root, psz_string, b_recursive );
 126     else
 127         playlist_LiveSearchClean( p_root );
 128     vlc_cond_signal( &pl_priv(p_playlist)->signal );
 129     return VLC_SUCCESS;
 130 }
 131