70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/*
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* Copyright 2014-2019 Max Kellermann <max.kellermann@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef GUNZIP_READER_HXX
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#define GUNZIP_READER_HXX
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#include "io/Reader.hxx"
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#include "util/StaticFifoBuffer.hxx"
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#include <zlib.h>
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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 = false;
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z_stream z;
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StaticFifoBuffer<Bytef, 65536> buffer;
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public:
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/**
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* Construct the filter.
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*
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* Throws on error.
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*/
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explicit GunzipReader(Reader &_next);
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~GunzipReader() noexcept {
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inflateEnd(&z);
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}
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/* virtual methods from class Reader */
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size_t Read(void *data, size_t size) override;
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private:
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bool FillBuffer();
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};
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#endif
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