cuttlefish::ReaderFakeSeeker Class Reference

#include <fake_seek.h>

Inheritance diagram for cuttlefish::ReaderFakeSeeker:

Collaboration diagram for cuttlefish::ReaderFakeSeeker:

Public Member Functions
	ReaderFakeSeeker (uint64_t length)
Result< uint64_t >	Read (void *buf, uint64_t count) final override
Result< uint64_t >	SeekSet (uint64_t) final override
Result< uint64_t >	SeekCur (int64_t) final override
Result< uint64_t >	SeekEnd (int64_t) final override
Public Member Functions inherited from cuttlefish::ReaderSeeker
Result< void >	Visit (IoVisitor &) override
virtual Result< uint64_t >	PRead (void *buf, uint64_t count, uint64_t offset) const =0
Public Member Functions inherited from cuttlefish::Reader
virtual	~Reader ()=default
Result< void >	Visit (IoVisitor &) override
virtual Result< uint64_t >	Read (void *buf, uint64_t count)=0
Public Member Functions inherited from cuttlefish::IoVisitable
virtual	~IoVisitable ()=default
virtual Result< void >	Visit (IoVisitor &)=0
Public Member Functions inherited from cuttlefish::Seeker
virtual	~Seeker ()=default
Result< void >	Visit (IoVisitor &) override
virtual Result< uint64_t >	SeekSet (uint64_t offset)=0
virtual Result< uint64_t >	SeekCur (int64_t offset)=0
virtual Result< uint64_t >	SeekEnd (int64_t offset)=0

Private Attributes
uint64_t	seek_pos_ = 0
uint64_t	length_

Detailed Description

Simulates a seek cursor over a data source with no native seeking state.

This makes it possible to satisfy the full ReaderSeeker interface by implementing only PRead. It's useful for data sources that don't correspond to files.

Constructor & Destructor Documentation

ReaderFakeSeeker()

cuttlefish::ReaderFakeSeeker::ReaderFakeSeeker

(

uint64_t

length

)

Member Function Documentation

Read()

Result< uint64_t > cuttlefish::ReaderFakeSeeker::Read ( void *  buf, uint64_t  count  )

finaloverridevirtual

Implements cuttlefish::Reader.

SeekCur()

Result< uint64_t > cuttlefish::ReaderFakeSeeker::SeekCur ( int64_t  off )

finaloverridevirtual

Implements cuttlefish::Seeker.

SeekEnd()

Result< uint64_t > cuttlefish::ReaderFakeSeeker::SeekEnd ( int64_t  off )

finaloverridevirtual

Implements cuttlefish::Seeker.

SeekSet()

Result< uint64_t > cuttlefish::ReaderFakeSeeker::SeekSet ( uint64_t  offset )

finaloverridevirtual

Implements cuttlefish::Seeker.

Member Data Documentation

length_

uint64_t cuttlefish::ReaderFakeSeeker::length_

private

seek_pos_

uint64_t cuttlefish::ReaderFakeSeeker::seek_pos_ = 0

private

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The documentation for this class was generated from the following files:

• cuttlefish/io/fake_seek.h
• cuttlefish/io/fake_seek.cc