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/*
* DataSink
* (C) 1999-2007 Jack Lloyd
* 2017 Philippe Lieser
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_DATA_SINK_H_
#define BOTAN_DATA_SINK_H_
#include <botan/filter.h>
#include <memory>
#include <iosfwd>
namespace Botan {
/**
* This class represents abstract data sink objects.
*/
class BOTAN_PUBLIC_API(2,0) DataSink : public Filter
{
public:
bool attachable() override { return false; }
DataSink() = default;
virtual ~DataSink() = default;
DataSink& operator=(const DataSink&) = delete;
DataSink(const DataSink&) = delete;
};
/**
* This class represents a data sink which writes its output to a stream.
*/
class BOTAN_PUBLIC_API(2,0) DataSink_Stream final : public DataSink
{
public:
/**
* Construct a DataSink_Stream from a stream.
* @param stream the stream to write to
* @param name identifier
*/
DataSink_Stream(std::ostream& stream,
const std::string& name = "<std::ostream>");
#if defined(BOTAN_TARGET_OS_HAS_FILESYSTEM)
/**
* Construct a DataSink_Stream from a filesystem path name.
* @param pathname the name of the file to open a stream to
* @param use_binary indicates whether to treat the file
* as a binary file or not
*/
DataSink_Stream(const std::string& pathname,
bool use_binary = false);
#endif
std::string name() const override { return m_identifier; }
void write(const uint8_t[], size_t) override;
void end_msg() override;
~DataSink_Stream();
private:
const std::string m_identifier;
// May be null, if m_sink was an external reference
std::unique_ptr<std::ostream> m_sink_memory;
std::ostream& m_sink;
};
}
#endif
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