A std::streambuf that writes every byte to two underlying buffers. More...

#include <tee_stream.hpp>

Inheritance diagram for mx::TeeBuf:

Collaboration diagram for mx::TeeBuf:

Public Member Functions
	TeeBuf (std::streambuf buf1, std::streambuf buf2)
	Construct a TeeBuf that mirrors output to buf1 and buf2.

Protected Member Functions
virtual int	overflow (int c) override
	Write a single character to both buffers.
virtual int	sync () override
	Flush both underlying buffers.

Private Attributes
std::streambuf *	buf1 = nullptr
	First sink.
std::streambuf *	buf2 = nullptr
	Second sink.

Detailed Description

A std::streambuf that writes every byte to two underlying buffers.

Attach two std::streambuf pointers at construction. Any character written through this buffer is forwarded to both sinks; overflow() and sync() are both propagated.

Definition at line 28 of file tee_stream.hpp.

Constructor & Destructor Documentation

◆ TeeBuf()

mx::TeeBuf::TeeBuf	(	std::streambuf *	buf1,
		std::streambuf *	buf2 )

inline

Construct a TeeBuf that mirrors output to buf1 and buf2.

Parameters

buf1	First destination stream buffer (must outlive this object).
buf2	Second destination stream buffer (must outlive this object).

Definition at line 35 of file tee_stream.hpp.

References buf1, and buf2.

Member Function Documentation

◆ overflow()

virtual int mx::TeeBuf::overflow ( int c )

inlineoverrideprotectedvirtual

Write a single character to both buffers.

Parameters

c	Character to write (may be EOF).

Returns: The character written on success, or traits_type::eof() on failure.

Definition at line 43 of file tee_stream.hpp.

References buf1, buf2, and sync().

◆ sync()

virtual int mx::TeeBuf::sync ( )

inlineoverrideprotectedvirtual

Flush both underlying buffers.

Returns: 0 if both flushes succeed, -1 otherwise.

Definition at line 68 of file tee_stream.hpp.

References buf1, and buf2.

Referenced by overflow().

Member Data Documentation

◆ buf1

std::streambuf* mx::TeeBuf::buf1 = nullptr

private

First sink.

Definition at line 78 of file tee_stream.hpp.

Referenced by overflow(), sync(), and TeeBuf().

◆ buf2

std::streambuf* mx::TeeBuf::buf2 = nullptr

private

Second sink.

Definition at line 79 of file tee_stream.hpp.