2014-08-07 17:14:58 +02:00
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/*
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* Copyright (C) 2003-2014 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_GUNZIP_READER_HXX
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#define MPD_GUNZIP_READER_HXX
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#include "check.h"
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#include "Reader.hxx"
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#include "util/StaticFifoBuffer.hxx"
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2014-08-30 00:46:52 +02:00
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#include "Compiler.h"
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2014-08-07 17:14:58 +02:00
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#include <zlib.h>
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class Error;
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class Domain;
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/**
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* A filter that decompresses data using zlib.
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*/
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class GunzipReader final : public Reader {
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Reader &next;
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bool eof;
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z_stream z;
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StaticFifoBuffer<Bytef, 4096> buffer;
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public:
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/**
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* Construct the filter. Call IsDefined() to check whether
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* the constructor has succeeded. If not, #error will hold
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* information about the failure.
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*/
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GunzipReader(Reader &_next, Error &error);
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~GunzipReader();
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/**
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* Check whether the constructor has succeeded.
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*/
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bool IsDefined() const {
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return z.opaque == nullptr;
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}
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/* virtual methods from class Reader */
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virtual size_t Read(void *data, size_t size, Error &error) override;
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private:
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bool FillBuffer(Error &error);
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};
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#endif
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