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...
 
Sourceoperator>> (unique_ptr< Transform > transform)
 Connect to an intermediate transformation module. More...
 
void operator>> (unique_ptr< Sink > sink)
 Connect to the last transformation module. More...
 
size_t write (const uint8_t *buf, size_t size)
 Accept input data and directly write input into next transformation module. More...
 

Protected Member Functions

void appendChain (unique_ptr< Downstream > tail)
 connect to next transformation module More...
 
size_t getIndex () const
 Get the source module index (should always be 0). More...
 
DownstreamgetNext ()
 
void pump ()
 Pump all data into next transformation module. More...
 

Protected Attributes

unique_ptr< Downstreamm_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 45 of file step-source.hpp.

Member Function Documentation

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

connect to next transformation module

Definition at line 67 of file transform-base.cpp.

void ndn::security::transform::StepSource::end ( )

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

Definition at line 35 of file step-source.cpp.

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

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

Definition at line 320 of file transform-base.hpp.

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

Definition at line 174 of file transform-base.hpp.

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

Connect to an intermediate transformation module.

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

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 176 of file transform-base.cpp.

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

Pump all data into next transformation module.

Definition at line 160 of file transform-base.cpp.

size_t ndn::security::transform::StepSource::write ( const uint8_t *  buf,
size_t  size 
)

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 has been written into next module

Definition at line 29 of file step-source.cpp.

Member Data Documentation

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

Definition at line 180 of file transform-base.hpp.