src/playlist_queue.c

   1 /*
   2  * Copyright (C) 2003-2010 The Music Player Daemon Project
   3  * http://www.musicpd.org
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #include "config.h"
  21 #include "playlist_queue.h"
  22 #include "playlist_list.h"
  23 #include "playlist_plugin.h"
  24 #include "playlist_mapper.h"
  25 #include "playlist_song.h"
  26 #include "stored_playlist.h"
  27 #include "mapper.h"
  28 #include "song.h"
  29 #include "uri.h"
  30 #include "input_stream.h"
  31
  32 enum playlist_result
  33 playlist_load_into_queue(const char *uri, struct playlist_provider *source,
  34                          struct playlist *dest)
  35 {
  36         enum playlist_result result;
  37         struct song *song;
  38         char *base_uri = uri != NULL ? g_path_get_dirname(uri) : NULL;
  39
  40         while ((song = playlist_plugin_read(source)) != NULL) {
  41                 song = playlist_check_translate_song(song, base_uri);
  42                 if (song == NULL)
  43                         continue;
  44
  45                 result = playlist_append_song(dest, song, NULL);
  46                 if (result != PLAYLIST_RESULT_SUCCESS) {
  47                         if (!song_in_database(song))
  48                                 song_free(song);
  49                         g_free(base_uri);
  50                         return result;
  51                 }
  52         }
  53
  54         g_free(base_uri);
  55
  56         return PLAYLIST_RESULT_SUCCESS;
  57 }
  58
  59 static enum playlist_result
  60 playlist_open_remote_into_queue(const char *uri, struct playlist *dest)
  61 {
  62         GError *error = NULL;
  63         struct playlist_provider *playlist;
  64         struct input_stream *is = NULL;
  65         enum playlist_result result;
  66
  67         assert(uri_has_scheme(uri));
  68
  69         playlist = playlist_list_open_uri(uri);
  70         if (playlist == NULL) {
  71                 is = input_stream_open(uri, &error);
  72                 if (is == NULL) {
  73                         if (error != NULL) {
  74                                 g_warning("Failed to open %s: %s",
  75                                           uri, error->message);
  76                                 g_error_free(error);
  77                         }
  78
  79                         return PLAYLIST_RESULT_NO_SUCH_LIST;
  80                 }
  81
  82                 playlist = playlist_list_open_stream(is, uri);
  83                 if (playlist == NULL) {
  84                         input_stream_close(is);
  85                         return PLAYLIST_RESULT_NO_SUCH_LIST;
  86                 }
  87         }
  88
  89         result = playlist_load_into_queue(uri, playlist, dest);
  90         playlist_plugin_close(playlist);
  91
  92         if (is != NULL)
  93                 input_stream_close(is);
  94
  95         return result;
  96 }
  97
  98 enum playlist_result
  99 playlist_open_into_queue(const char *uri, struct playlist *dest)
 100 {
 101         if (uri_has_scheme(uri))
 102                 return playlist_open_remote_into_queue(uri, dest);
 103
 104         struct playlist_provider *playlist = playlist_mapper_open(uri);
 105         if (playlist != NULL) {
 106                 enum playlist_result result =
 107                         playlist_load_into_queue(uri, playlist, dest);
 108                 playlist_plugin_close(playlist);
 109                 return result;
 110         }
 111
 112         return PLAYLIST_RESULT_NO_SUCH_LIST;
 113 }