Cpl::Text::Frame::BlockEncoder Class Reference

This concrete class implements extends the StreamDecoder implementation to be more efficient with respect to outputting data to a Stream. More...

Detailed Description

This concrete class implements extends the StreamDecoder implementation to be more efficient with respect to outputting data to a Stream.

The encoded output data is temporarily cached in RAM and then written to the Stream.

#include <BlockEncoder.h>

Inheritance diagram for Cpl::Text::Frame::BlockEncoder:

Collaboration diagram for Cpl::Text::Frame::BlockEncoder:

Public Member Functions
	BlockEncoder (void *blockBuffer, size_t blockSizeInBytes, Cpl::Io::Output *dstPtr, char startOfFrame, char endOfFrame, char escapeChar, bool appendNewline=true)
	Constructor.
bool	endFrame () noexcept
	See Cpl::Text::Frame::Encoder_.
Public Member Functions inherited from Cpl::Text::Frame::StreamEncoder
	StreamEncoder (Cpl::Io::Output *dstPtr, char startOfFrame, char endOfFrame, char escapeChar, bool appendNewline=true)
	Constructor.
void	setOutput (Cpl::Io::Output &newOutfd) noexcept
	Allow the consumer to change/Set the Output stream handle. Note: No guarantees on what happens if this method is called in the 'middle of a frame'.
Public Member Functions inherited from Cpl::Text::Frame::Encoder_
bool	startFrame (void) noexcept
	See Cpl::Text::Frame::Encoder.
bool	output (char src) noexcept
	See Cpl::Text::Frame::Encoder.
bool	output (const char *src) noexcept
	See Cpl::Text::Frame::Encoder.
bool	output (const char *src, size_t numBytes) noexcept
	See Cpl::Text::Frame::Encoder.
bool	endFrame (void) noexcept
	See Cpl::Text::Frame::Encoder.
Public Member Functions inherited from Cpl::Text::Frame::Encoder
virtual	~Encoder ()
	Virtual Destructor.

Protected Member Functions
bool	start (char src) noexcept
	See Cpl::Text::Frame::Encoder_.
bool	start () noexcept
	See Cpl::Text::Frame::Encoder_.
bool	append (char src) noexcept
	See Cpl::Text::Frame::Encoder_.
bool	appendToBlock (char src) noexcept
	Helper method.
Protected Member Functions inherited from Cpl::Text::Frame::StreamEncoder
bool	start (char src) noexcept
	See Cpl::Text::Frame::Encoder_.
bool	start () noexcept
	See Cpl::Text::Frame::Encoder_.
bool	append (char src) noexcept
	See Cpl::Text::Frame::Encoder_.
Protected Member Functions inherited from Cpl::Text::Frame::Encoder_
	Encoder_ (char startOfFrame, char endOfFrame, char escapeChar, bool appendNewline=true)
	Constructor.
virtual char	encodeChar (char charToBeEscaped)
	Returns the encoded/escaped value for the specified special character.

Protected Attributes
uint8_t *	m_buffer
	Point to the client supplied buffer for a block.
size_t	m_bufferSize
	Size, in bytes, of the block buffer.
size_t	m_bufferCount
	Number of bytes currently stored in the block buffer.
Protected Attributes inherited from Cpl::Text::Frame::StreamEncoder
Cpl::Io::Output *	m_dstPtr
	Output stream.
Protected Attributes inherited from Cpl::Text::Frame::Encoder_
bool	m_inFrame
	Output/Frame state.
const char	m_sof
	SOF character.
const char	m_eof
	EOF character.
const char	m_esc
	Escape character.
const bool	m_appendNewline
	Remember my newline option.

Constructor & Destructor Documentation

BlockEncoder()

Cpl::Text::Frame::BlockEncoder::BlockEncoder	(	void *	blockBuffer,
		size_t	blockSizeInBytes,
		Cpl::Io::Output *	dstPtr,
		char	startOfFrame,
		char	endOfFrame,
		char	escapeChar,
		bool	appendNewline = true
	)

Constructor.

The Output Stream is not required to be specified at construction time (i.e. 'dstPtr' can be zero). However, the encoder must have a valid Output Stream handle BEFORE the start() method is called. When 'appendNewline' argument is set to true - the encoder will append a newline character to the output stream AFTER the EOF character (this can make for more human readable output stream).

NOTE: If 'startOfFrame' is '\0', then Encoder will begin the frame WITHOUT inserting a SOF character. This is useful when there application desires/has multiple start-of-frame characters for a given frame.

Member Function Documentation

append()

bool Cpl::Text::Frame::BlockEncoder::append ( char  src )

protectedvirtualnoexcept

See Cpl::Text::Frame::Encoder_.

Implements Cpl::Text::Frame::Encoder_.

appendToBlock()

bool Cpl::Text::Frame::BlockEncoder::appendToBlock ( char  src )

protectednoexcept

Helper method.

endFrame()

bool Cpl::Text::Frame::BlockEncoder::endFrame ( )

virtualnoexcept

See Cpl::Text::Frame::Encoder_.

Implements Cpl::Text::Frame::Encoder.

start() [1/2]

bool Cpl::Text::Frame::BlockEncoder::start ( )

protectedvirtualnoexcept

See Cpl::Text::Frame::Encoder_.

Implements Cpl::Text::Frame::Encoder_.

start() [2/2]

bool Cpl::Text::Frame::BlockEncoder::start ( char  src )

protectedvirtualnoexcept

See Cpl::Text::Frame::Encoder_.

Implements Cpl::Text::Frame::Encoder_.

Member Data Documentation

m_buffer

uint8_t* Cpl::Text::Frame::BlockEncoder::m_buffer

protected

Point to the client supplied buffer for a block.

m_bufferCount

size_t Cpl::Text::Frame::BlockEncoder::m_bufferCount

protected

Number of bytes currently stored in the block buffer.

m_bufferSize

size_t Cpl::Text::Frame::BlockEncoder::m_bufferSize

protected

Size, in bytes, of the block buffer.

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

• Cpl/Text/Frame/BlockEncoder.h