MPD  0.20.6
SongLoader.hxx
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1 /*
2  * Copyright 2003-2017 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 #ifndef MPD_SONG_LOADER_HXX
21 #define MPD_SONG_LOADER_HXX
22 
23 #include "check.h"
24 #include "Compiler.h"
25 
26 #include <cstddef>
27 
28 class Client;
29 class Database;
30 class Storage;
31 class DetachedSong;
32 class Path;
33 struct LocatedUri;
34 
41 class SongLoader {
42  const Client *const client;
43 
44 #ifdef ENABLE_DATABASE
45  const Database *const db;
46  const Storage *const storage;
47 #endif
48 
49 public:
50 #ifdef ENABLE_DATABASE
51  explicit SongLoader(const Client &_client);
52  SongLoader(const Database *_db, const Storage *_storage)
53  :client(nullptr), db(_db), storage(_storage) {}
54  SongLoader(const Client &_client, const Database *_db,
55  const Storage *_storage)
56  :client(&_client), db(_db), storage(_storage) {}
57 #else
58  explicit SongLoader(const Client &_client)
59  :client(&_client) {}
60  explicit SongLoader(std::nullptr_t, std::nullptr_t)
61  :client(nullptr) {}
62 #endif
63 
64 #ifdef ENABLE_DATABASE
65  const Storage *GetStorage() const {
66  return storage;
67  }
68 #endif
69 
70  DetachedSong *LoadSong(const LocatedUri &uri) const;
71 
76  DetachedSong *LoadSong(const char *uri_utf8) const;
77 
78 private:
80  DetachedSong *LoadFromDatabase(const char *uri) const;
81 
83  DetachedSong *LoadFile(const char *path_utf8, Path path_fs) const;
84 };
85 
86 #endif
SongLoader(std::nullptr_t, std::nullptr_t)
Definition: SongLoader.hxx:60
#define gcc_nonnull_all
Definition: Compiler.h:122
const Storage const char const char * path_utf8
A path name in the native file system character set.
Definition: Path.hxx:39
SongLoader(const Client &_client)
Definition: SongLoader.hxx:58
const Storage & storage
A utility class that loads a DetachedSong object by its URI.
Definition: SongLoader.hxx:41
const Storage const char * uri
DetachedSong * LoadSong(const LocatedUri &uri) const