MPD: fs/io/AutoGunzipReader.hxx Source File

MPD 0.20.18

AutoGunzipReader.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_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) {}
41 ~AutoGunzipReader();
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
Reader
An interface that can read bytes from a stream until the stream ends.
Definition: Reader.hxx:35
check.h
AutoGunzipReader::~AutoGunzipReader
~AutoGunzipReader()
PeekReader.hxx
AutoGunzipReader
A filter that detects gzip compression and optionally inserts a GunzipReader.
Definition: AutoGunzipReader.hxx:33
GunzipReader
A filter that decompresses data using zlib.
Definition: GunzipReader.hxx:33
Compiler.h
AutoGunzipReader::AutoGunzipReader
AutoGunzipReader(Reader &_next)
Definition: AutoGunzipReader.hxx:39
PeekReader
A filter that allows the caller to peek the first few bytes without consuming them.
Definition: PeekReader.hxx:34
AutoGunzipReader::Read
virtual size_t Read(void *data, size_t size) override
Read data from the stream.