Data chunked stream class. More...

#include <ChunkedStream.h>

Inheritance diagram for ChunkedStream:

Public Member Functions
	ChunkedStream (IDataSourceStream *stream, size_t resultSize=512)

StreamType	getStreamType () const override
	Get the stream type. More...

int	available () override
	Return the total length of the stream. More...

uint16_t	readMemoryBlock (char *data, int bufSize) override
	Read a block of memory. More...

bool	seek (int len) override
	Move read cursor. More...

bool	isFinished () override
	Check if all data has been read. More...

virtual void	saveState ()
	A method that backs up the current state. More...

virtual void	restoreState ()
	A method that restores the last backed up state. More...

virtual bool	isValid () const
	Determine if the stream object contains valid data. More...

int	read () override
	Read one character and moves the stream pointer. More...

int	peek () override
	Read a character without advancing the stream pointer. More...

size_t	write (uint8_t charToWrite) override
	Writes a single character to output stream. More...

size_t	write (const char *str)
	Writes a c-string to output stream. More...

virtual size_t	write (const uint8_t *buffer, size_t size)
	Writes characters from a buffer to output stream. More...

size_t	write (const char *buffer, size_t size)
	Writes characters from a buffer to output stream. More...

int	length () SMING_DEPRECATED
	Return the total length of the stream. More...

void	flush () override

virtual String	id () const
	Returns unique id of the resource. More...

virtual String	getName () const
	Returns name of the resource. More...

void	setTimeout (unsigned long timeout)

bool	find (char *target)

bool	find (char *target, size_t length)

bool	findUntil (char target, char terminator)

bool	findUntil (char target, size_t targetLen, char terminate, size_t termLen)

long	parseInt ()

float	parseFloat ()

size_t	readBytes (char *buffer, size_t length)

size_t	readBytesUntil (char terminator, char *buffer, size_t length)

String	readString ()

String	readStringUntil (char terminator)

virtual int	indexOf (char c)

int	getWriteError ()
	Gets last error. More...

void	clearWriteError ()
	Clears the last write error. More...

size_t	print (char)
	Prints a single character to output stream. More...

size_t	print (const char[])
	Prints a c-string to output stream. More...

size_t	print (unsigned long, int base=DEC)
	Prints a number to output stream. More...

size_t	print (long, int base=DEC)
	Prints a number to output stream. More...

size_t	print (unsigned int, int base=DEC)

size_t	print (unsigned char, int base=DEC)

size_t	print (int, int base=DEC)
	Prints a number to output stream. More...

size_t	print (double, int digits=2)
	Prints number to output stream. More...

size_t	print (const Printable &p)
	Prints a Printable object to output stream. More...

size_t	print (const String &s)
	Prints a String to output stream. More...

size_t	println (void)
	Prints a newline to output stream. More...

size_t	println (const char[])
	Prints a c-string to output stream, appending newline. More...

size_t	println (char)
	Prints a single character to output stream, appending newline. More...

size_t	println (unsigned char, int base=DEC)
	Prints a number to output stream, appending newline. More...

size_t	println (unsigned int, int base=DEC)

size_t	println (unsigned long, int base=DEC)

size_t	println (int, int base=DEC)
	Prints a number to output stream, appending newline. More...

size_t	println (long, int base=DEC)
	Prints a number to output stream, appending newline. More...

size_t	println (double, int digits=2)
	Prints a number to output stream, appending newline. More...

size_t	println (const Printable &p)
	Prints a Printable object to output stream, appending newline. More...

size_t	println (const String &s)
	Prints a String to output stream, appending newline. More...

size_t	printf (const char *fmt,...)
	Prints a formatted c-string to output stream. More...

Protected Member Functions
size_t	transform (const uint8_t source, size_t sourceLength, uint8_t target, size_t targetLength) override
	Inherited class implements this method to transform a block of data. More...

int	timedRead ()

int	timedPeek ()

int	peekNextDigit ()

long	parseInt (char skipChar)

float	parseFloat (char skipChar)

void	setWriteError (int err=1)

Protected Attributes
StreamTransformerCallback	transformCallback = nullptr
	Callback function to perform transformation. More...

unsigned long	receiveTimeout = 1000

unsigned long	startMillis = 0

Detailed Description

Data chunked stream class.

Member Function Documentation

int StreamTransformer::available ( )

inlineoverridevirtualinherited

Return the total length of the stream.

Return values

int	-1 is returned when the size cannot be determined

Reimplemented from IDataSourceStream.

void Print::clearWriteError ( )

inlineinherited

Clears the last write error.

virtual String IDataSourceStream::getName ( ) const

inlinevirtualinherited

Returns name of the resource.

Return values

String

Note: Commonly used to obtain name of file

Reimplemented in TemplateStream, FileStream, and GdbFileStream.

StreamType StreamTransformer::getStreamType ( ) const

inlineoverridevirtualinherited

Get the stream type.

Return values

StreamType The stream type.

Reimplemented from IDataSourceStream.

int Print::getWriteError ( )

inlineinherited

Gets last error.

Return values

int	Error number of last write error

virtual String IDataSourceStream::id ( ) const

inlinevirtualinherited

Returns unique id of the resource.

Return values

String the unique id of the stream.

Reimplemented in FileStream, GdbFileStream, and CircularBuffer.

bool StreamTransformer::isFinished ( )

overridevirtualinherited

Check if all data has been read.

Return values

bool	True on success.

Implements IDataSourceStream.

virtual bool IDataSourceStream::isValid ( ) const

inlinevirtualinherited

Determine if the stream object contains valid data.

Return values

bool	true if valid, false if invalid

Note: Where inherited classes are initialised by constructor this method indicates whether that was successful or not (e.g. FileStream)

Reimplemented in FileStream, and GdbFileStream.

int IDataSourceStream::length ( )

inlineinherited

Return the total length of the stream.

Return values

int	-1 is returned when the size cannot be determined

Deprecated:: Use available() instead

int IDataSourceStream::peek ( )

overridevirtualinherited

Read a character without advancing the stream pointer.

Return values

int	The character that was read or -1 if none is available

Implements Stream.

Reimplemented in HardwareSerial.

size_t Print::print ( char )

inherited

Prints a single character to output stream.

Return values

size_t Quantity of characters written to stream

size_t Print::print ( const char [] )

inherited

Prints a c-string to output stream.

Parameters

char[] c-string to print

Return values

size_t	Quantity of characters written to output stream
size_t	Quantity of characters written to stream

size_t Print::print	(	unsigned	char,
		int	base = `DEC`
	)

inherited

Prints a number to output stream.

Parameters

unsigned long	Number to print
base	The base for output (Default: Decimal (base 10))

Return values

size_t Quantity of characters written to stream

Parameters

unsigned int	Number to print
base	The base for output (Default: Decimal (base 10))

Return values

size_t Quantity of characters written to stream

Parameters

unsigned char	Number to print
base	The base for output (Default: Decimal (base 10))

Return values

size_t Quantity of characters written to stream

size_t Print::print	(	long	,
		int	base = `DEC`
	)

inherited

Prints a number to output stream.

Parameters

long	Number to print
base	The base for output (Default: Decimal (base 10))

Return values

size_t Quantity of characters written to stream

size_t Print::print	(	int	,
		int	base = `DEC`
	)

inherited

Prints a number to output stream.

Parameters

int	Number to print
base	The base for output (Default: Decimal (base 10))

Return values

size_t Quantity of characters written to stream

size_t Print::print	(	double	,
		int	digits = `2`
	)

inherited

Prints number to output stream.

Prints a number to output stream.

Parameters

double	Number to print
int	Decimal places to show

Return values

size_t Quantity of characters written to output stream

Parameters

double	Number to print
digits	The decimal places to print (Default: 2, e.g. 21.35)

Return values

size_t Quantity of characters written to stream

size_t Print::print ( const Printable & p )

inherited

Prints a Printable object to output stream.

Parameters

p	Object to print

Return values

size_t Quantity of characters written to stream

size_t Print::print ( const String & s )

inherited

Prints a String to output stream.

Parameters

s	String to print

Return values

size_t Quantity of characters written to stream

size_t Print::printf	(	const char *	fmt,
			...
	)

inherited

Prints a formatted c-string to output stream.

Parameters

fmt	Pointer to formated c-string to print
...	Parameters for placeholders within formated string

Return values

size_t Quantity of characters written to stream

Note: Use standard printf placeholders, e.g. d for integer, s for c-string, etc.

size_t Print::println ( void )

inherited

Prints a newline to output stream.

Parameters

Prints newline to output stream

Return values

size_t	Quantity of characters written to output stream
size_t	Quantity of characters written to stream

size_t Print::println ( const char [] )

inherited

Prints a c-string to output stream, appending newline.

Parameters

char[] c-string to print

Return values

size_t Quantity of characters written to stream

size_t Print::println ( char )

inherited

Prints a single character to output stream, appending newline.

Parameters

char	Character to print

Return values

size_t Quantity of characters written to stream

size_t Print::println	(	unsigned	long,
		int	base = `DEC`
	)

inherited

Prints a number to output stream, appending newline.

Parameters

unsigned char	Number to print
base	The base for output (Default: Decimal (base 10))

Return values

size_t Quantity of characters written to stream

Parameters

unsigned int	Number to print
base	The base for output (Default: Decimal (base 10))

Return values

size_t Quantity of characters written to stream

Parameters

unsigned long	Number to print
base	The base for output (Default: Decimal (base 10))

Return values

size_t Quantity of characters written to stream

size_t Print::println	(	int	,
		int	base = `DEC`
	)

inherited

Prints a number to output stream, appending newline.

Parameters

int	Number to print
base	The base for output (Default: Decimal (base 10))

Return values

size_t Quantity of characters written to stream

size_t Print::println	(	long	,
		int	base = `DEC`
	)

inherited

Prints a number to output stream, appending newline.

Parameters

long	Number to print
base	The base for output (Default: Decimal (base 10))

Return values

size_t Quantity of characters written to stream

size_t Print::println	(	double	,
		int	digits = `2`
	)

inherited

Prints a number to output stream, appending newline.

Parameters

double	Number to print
digits	The decimal places to print (Default: 2, e.g. 21.35)

Return values

size_t Quantity of characters written to stream

size_t Print::println ( const Printable & p )

inherited

Prints a Printable object to output stream, appending newline.

Parameters

p	Object to print

Return values

size_t Quantity of characters written to stream

size_t Print::println ( const String & s )

inherited

Prints a String to output stream, appending newline.

Parameters

s	String to print

Return values

size_t Quantity of characters written to stream

int IDataSourceStream::read ( )

overridevirtualinherited

Read one character and moves the stream pointer.

Return values

The	character that was read or -1 if none is available

Implements Stream.

Reimplemented in HardwareSerial.

uint16_t StreamTransformer::readMemoryBlock	(	char *	data,
		int	bufSize
	)

overridevirtualinherited

Read a block of memory.

Parameters

data	Pointer to the data to be read
bufSize	Quantity of chars to read

Return values

uint16_t Quantity of chars read

Todo:: Should IDataSourceStream::readMemoryBlock return same data type as its bufSize param?

Implements IDataSourceStream.

virtual void StreamTransformer::restoreState ( )

inlinevirtualinherited

A method that restores the last backed up state.

Reimplemented in Base64OutputStream.

virtual void StreamTransformer::saveState ( )

inlinevirtualinherited

A method that backs up the current state.

Reimplemented in Base64OutputStream.

bool StreamTransformer::seek ( int len )

overridevirtualinherited

Move read cursor.

Parameters

len	Relative cursor adjustment

Return values

bool	True on success.

Implements IDataSourceStream.

size_t ChunkedStream::transform	(	const uint8_t *	in,
		size_t	inLength,
		uint8_t *	out,
		size_t	outLength
	)

overrideprotectedvirtual

Inherited class implements this method to transform a block of data.

Parameters

const	uint8_t* in source data
size_t	inLength source data length
uint8_t*	out output buffer
size_t	outLength size of output buffer

Return values

size_t number of output bytes written

Note: Called with in = nullptr and inLength = 0 at end of input stream

Reimplemented from StreamTransformer.

size_t Print::write ( const char * str )

inlineinherited

Writes a c-string to output stream.

Parameters

str	Pointer to c-string

Return values

size_t Quantity of characters written to stream

size_t Print::write	(	const uint8_t *	buffer,
		size_t	size
	)

virtualinherited

Writes characters from a buffer to output stream.

Parameters

buffer	Pointer to character buffer
size	Quantity of characters to write

Return values

size_t Quantity of characters written to stream

Reimplemented in HardwareSerial, CircularBuffer, FileStream, MemoryDataStream, LimitedMemoryStream, TwoWire, EndlessMemoryStream, GdbFileStream, rBootItemOutputStream, and ReadWriteStream.

size_t Print::write	(	const char *	buffer,
		size_t	size
	)

inlineinherited

Writes characters from a buffer to output stream.

Parameters

buffer	Pointer to character buffer
size	Quantity of characters to write

Return values

size_t Quantity of characters written to stream

size_t IDataSourceStream::write ( uint8_t )

inlineoverridevirtualinherited

Writes a single character to output stream.

Parameters

uint8_t Character to write to output stream

Return values

size_t Quantity of characters written to output stream

Implements Print.

Reimplemented in ReadWriteStream.

Member Data Documentation

StreamTransformerCallback StreamTransformer::transformCallback = nullptr

protectedinherited

Callback function to perform transformation.

Deprecated:: Create inherited class and verride transform() method instead

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Function Documentation

Member Data Documentation