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/*
* Filter interface for compression
* (C) 2014,2015,2016 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_COMPRESSION_FILTER_H_
#define BOTAN_COMPRESSION_FILTER_H_
#include <botan/filter.h>
namespace Botan {
#if defined(BOTAN_HAS_COMPRESSION)
class Compression_Algorithm;
class Decompression_Algorithm;
/**
* Filter interface for compression
*/
class BOTAN_PUBLIC_API(2,0) Compression_Filter final : public Filter
{
public:
void start_msg() override;
void write(const uint8_t input[], size_t input_length) override;
void end_msg() override;
void flush();
std::string name() const override;
Compression_Filter(const std::string& type,
size_t compression_level,
size_t buffer_size = 4096);
~Compression_Filter();
private:
std::unique_ptr<Compression_Algorithm> m_comp;
size_t m_buffersize, m_level;
secure_vector<uint8_t> m_buffer;
};
/**
* Filter interface for decompression
*/
class BOTAN_PUBLIC_API(2,0) Decompression_Filter final : public Filter
{
public:
void start_msg() override;
void write(const uint8_t input[], size_t input_length) override;
void end_msg() override;
std::string name() const override;
Decompression_Filter(const std::string& type,
size_t buffer_size = 4096);
~Decompression_Filter();
private:
std::unique_ptr<Decompression_Algorithm> m_comp;
std::size_t m_buffersize;
secure_vector<uint8_t> m_buffer;
};
#endif
}
#endif
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