UnsizedInputStream Class Reference

Inheritance diagram for UnsizedInputStream:

Public Member Functions
	UnsizedInputStream (const void *data, size_t size, size_t chunkSize=128)
Public Member Functions inherited from InputStream
virtual	~InputStream ()
size_t	read (void *data, size_t size)
void	readOrFail (void *data, size_t size)
size_t	readAll (std::string *dst)
std::string	readAll ()
size_t	skip (size_t size)
void	skipOrFail (size_t size)
size_t	readUntil (char delimiter, std::string *dst)
std::string	readUntil (char delimiter)
void	close ()
bool	isOpen () const
size_t	position () const
size_t	size () const
const std::string &	displayPath () const

Protected Member Functions
virtual size_t	_underflow (void *data, size_t size, Buffer *buffer) override
Protected Member Functions inherited from InputStream
	InputStream ()=default
void	open (Buffer buffer, size_t size, std::string_view displayPath)
virtual size_t	_underflow (void *data, size_t size, Buffer *buffer)
virtual void	_close (bool canThrow)
void	destroy () noexcept
void	throwReadError (size_t requested, size_t actual) const
void	throwSkipError (size_t requested, size_t actual) const

Private Attributes
const char *	_data
size_t	_dataSize
size_t	_chunkSize
size_t	_pos = 0

Additional Inherited Members
Public Types inherited from InputStream
using	Buffer = StreamBuffer< const char >

Detailed Description

An input stream that doesn't report its size, feeding data through _underflow in small chunks. Used for testing the unsized readAll code path.

Constructor & Destructor Documentation

UnsizedInputStream()

UnsizedInputStream::UnsizedInputStream ( const void *  data, size_t  size, size_t  chunkSize = 128  )

inline

Member Function Documentation

_underflow()

virtual size_t UnsizedInputStream::_underflow ( void *  data, size_t  size, Buffer *  buffer  )

inlineoverrideprotectedvirtual

Fetches more data from the underlying source. Override in subclasses that perform I/O.

Three modes of operation:

• size == 0: just refills the buffer without consuming any data.
• data != nullptr: reads size bytes into data.
• data == nullptr && size > 0: skips size bytes.

In all modes, sets *buffer to the new buffer state.

Parameters

[out]	data	Buffer to read into, or nullptr for skip/refill.
	size	Number of bytes to read or skip.
[out]	buffer	New buffer state.

Returns

Number of bytes read into data or skipped.

Exceptions

Exception

On error.

Reimplemented from InputStream.

Member Data Documentation

_chunkSize

size_t UnsizedInputStream::_chunkSize

private

_data

const char* UnsizedInputStream::_data

private

_dataSize

size_t UnsizedInputStream::_dataSize

private

_pos

size_t UnsizedInputStream::_pos = 0

private

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

• src/Utility/Streams/Tests/InputStream_ut.cpp