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41 lines
672 B
C++
41 lines
672 B
C++
// SPDX-License-Identifier: BSD-2-Clause
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// author: Max Kellermann <max.kellermann@gmail.com>
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#pragma once
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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<std::byte, 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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std::size_t Read(std::span<std::byte> dest) override;
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private:
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bool FillBuffer();
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};
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