ndn::security::transform::StepSource Class Reference

A source that can accept input step by step, and can close input explicitly. More...

#include <ndn-cxx/security/transform/step-source.hpp>

Inheritance diagram for ndn::security::transform::StepSource:

Collaboration diagram for ndn::security::transform::StepSource:

Public Member Functions
void	end ()
	Close the input interface and directly notify the next module the end of input. More...
void	operator>> (unique_ptr< Sink > sink)
	Connect to the last transformation module. More...
Source &	operator>> (unique_ptr< Transform > transform)
	Connect to an intermediate transformation module. More...
size_t	write (span< const uint8_t > buf)
	Accept input data and directly write input into next transformation module. More...

Protected Member Functions
void	appendChain (unique_ptr< Downstream > tail)
	Connect to the next transformation module. More...
size_t	getIndex () const
	Get the source module index (should always be 0). More...
Downstream *	getNext ()
void	pump ()
	Pump all data into next transformation module. More...

Protected Attributes
unique_ptr< Downstream >	m_next

Detailed Description

A source that can accept input step by step, and can close input explicitly.

This source will not send data into the transformation chain when the chain is constructed. Input will be explicitly sent into the chain using write(...) and will be closed explicitly using end().

StepSource ss; ss >> transform1() >> transform2() >> sinkStream(...); ss.write(...); ... ss.write(...); ss.end();

Definition at line 43 of file step-source.hpp.

Member Function Documentation

appendChain()

void ndn::security::transform::Upstream::appendChain ( unique_ptr< Downstream >  tail )

protectedinherited

Connect to the next transformation module.

Definition at line 54 of file transform-base.cpp.

end()

void ndn::security::transform::StepSource::end

(

)

Close the input interface and directly notify the next module the end of input.

Definition at line 33 of file step-source.cpp.

getIndex()

size_t ndn::security::transform::Source::getIndex ( ) const

inlineprotectedinherited

Get the source module index (should always be 0).

Definition at line 306 of file transform-base.hpp.

getNext()

Downstream* ndn::security::transform::Upstream::getNext ( )

inlineprotectedinherited

Definition at line 166 of file transform-base.hpp.

operator>>() [1/2]

void ndn::security::transform::Source::operator>> ( unique_ptr< Sink >  sink )

inherited

Connect to the last transformation module.

This method will trigger the source to pump data into the transformation pipeline.

Definition at line 149 of file transform-base.cpp.

operator>>() [2/2]

Source & ndn::security::transform::Source::operator>> ( unique_ptr< Transform >  transform )

inherited

Connect to an intermediate transformation module.

Definition at line 139 of file transform-base.cpp.

pump()

void ndn::security::transform::Source::pump ( )

protectedinherited

Pump all data into next transformation module.

Definition at line 133 of file transform-base.cpp.

write()

size_t ndn::security::transform::StepSource::write

(

span< const uint8_t >

buf

)

Accept input data and directly write input into next transformation module.

One can keep calling this method to until end() is called, which indicates the end of input. After that, calling this method will cause Error.

Returns

Number of bytes that have been written into the next module.

Definition at line 27 of file step-source.cpp.

Member Data Documentation

m_next

unique_ptr<Downstream> ndn::security::transform::Upstream::m_next

protectedinherited

Definition at line 172 of file transform-base.hpp.