MPD  0.20.18
AutoGunzipReader.hxx
Go to the documentation of this file.
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_AUTO_GUNZIP_READER_HXX
21 #define MPD_AUTO_GUNZIP_READER_HXX
22 
23 #include "check.h"
24 #include "PeekReader.hxx"
25 #include "Compiler.h"
26 
27 class GunzipReader;
28 
33 class AutoGunzipReader final : public Reader {
34  Reader *next = nullptr;
35  PeekReader peek;
36  GunzipReader *gunzip = nullptr;
37 
38 public:
39  explicit AutoGunzipReader(Reader &_next)
40  :peek(_next) {}
42 
43  /* virtual methods from class Reader */
44  virtual size_t Read(void *data, size_t size) override;
45 
46 private:
47  void Detect();
48 };
49 
50 #endif
An interface that can read bytes from a stream until the stream ends.
Definition: Reader.hxx:35
A filter that detects gzip compression and optionally inserts a GunzipReader.
A filter that decompresses data using zlib.
AutoGunzipReader(Reader &_next)
A filter that allows the caller to peek the first few bytes without consuming them.
Definition: PeekReader.hxx:34
virtual size_t Read(void *data, size_t size) override
Read data from the stream.