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// Copyright (C) 2019-2020 Joel Rosdahl and other contributors
//
// See doc/AUTHORS.adoc for a complete list of contributors.
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along with
// this program; if not, write to the Free Software Foundation, Inc., 51
// Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#pragma once
#include "system.hpp"
#include "Decompressor.hpp"
#include <fstream>
#include <zstd.h>
// A decompressor of a Zstandard stream.
class ZstdDecompressor : public Decompressor
{
public:
// Parameters:
// - stream: The file to read data from.
explicit ZstdDecompressor(FILE* stream);
~ZstdDecompressor() override;
void read(void* data, size_t count) override;
void finalize() override;
private:
FILE* m_stream;
char m_input_buffer[READ_BUFFER_SIZE];
size_t m_input_size;
size_t m_input_consumed;
ZSTD_DStream* m_zstd_stream;
ZSTD_inBuffer m_zstd_in;
ZSTD_outBuffer m_zstd_out;
bool m_reached_stream_end;
};
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