This concrete class provides a non-blocking implementation of Command PolledProcessor for a TShell engine. More...

Detailed Description

This concrete class provides a non-blocking implementation of Command PolledProcessor for a TShell engine.

See Cpl::TShell::PolledProcessor for additional details.

#include <PolledProcessor.h>

Inheritance diagram for Cpl::TShell::PolledProcessor:

Collaboration diagram for Cpl::TShell::PolledProcessor:

Public Member Functions
	PolledProcessor (Cpl::Container::SList< Command > &commands, Cpl::Text::Frame::StreamDecoder &deframer, Cpl::Text::Frame::StreamEncoder &framer, Cpl::System::Mutex &outputLock, char commentChar='#', char argEscape='`', char argDelimiter=' ', char argQuote='"', char argTerminator='\n', Security::Permission_T initialPermissionLevel = Security::ePUBLIC )
	Constructor.

bool	start (Cpl::Io::Input &infd, Cpl::Io::Output &outfd, bool blocking=true) noexcept
	See Cpl::TShell::ProcessorApi.

int	poll () noexcept
	See Cpl::TShell::ProcessorApi.

Public Member Functions inherited from Cpl::TShell::Processor
	Processor (Cpl::Container::SList< Command > &commands, Cpl::Text::Frame::StreamDecoder &deframer, Cpl::Text::Frame::StreamEncoder &framer, Cpl::System::Mutex &outputLock, char commentChar='#', char argEscape='`', char argDelimiter=' ', char argQuote='"', char argTerminator = '\n', Security::Permission_T initialPermissionLevel = Security::ePUBLIC )
	Constructor.

bool	start (Cpl::Io::Input &infd, Cpl::Io::Output &outfd, bool blocking=true) noexcept
	See Cpl::TShell::ProcessorApi.

int	poll () noexcept
	See Cpl::TShell::ProcessorApi.

void	requestStop () noexcept
	See Cpl::TShell::ProcessorApi.

char	getEscapeChar () noexcept
	See Cpl::TShell::ProcessorApi.

char	getDelimiterChar () noexcept
	See Cpl::TShell::ProcessorApi.

char	getQuoteChar () noexcept
	See Cpl::TShell::ProcessorApi.

char	getTerminatorChar () noexcept
	See Cpl::TShell::ProcessorApi.

Cpl::Container::SList< Command > &	getCommands () noexcept
	See Cpl::TShell::Context_.

Command *	findCommand (const char *verb, size_t verbLength) noexcept
	See Cpl::TShell::Context_.

bool	writeFrame (const char *text) noexcept
	See Cpl::TShell::Context_.

bool	writeFrame (const char *text, size_t maxBytes) noexcept
	See Cpl::TShell::Context_.

Cpl::Text::String &	getOutputBuffer () noexcept
	See Cpl::TShell::Context_.

Cpl::Text::String &	getTokenBuffer () noexcept
	See Cpl::TShell::Context_.

Cpl::Text::String &	getTokenBuffer2 () noexcept
	See Cpl::TShell::Context_.

bool	oobRead (void *buffer, int numBytes, int &bytesRead) noexcept
	See Cpl::TShell::Context_.

Security::Permission_T	getUserPermissionLevel () const noexcept
	See Cpl::TShell::Context_.

Security::Permission_T	setUserPermissionLevel (Security::Permission_T newPermissionLevel) noexcept
	See Cpl::TShell::Context_.

Public Member Functions inherited from Cpl::TShell::Context_
virtual	~Context_ ()
	Virtual destructor.

Public Member Functions inherited from Cpl::TShell::ProcessorApi
virtual	~ProcessorApi ()
	Virtual destructor.

Protected Member Functions
int	readInput (size_t &frameSize) noexcept
	Helper method that executes the decoder, i.e.

Protected Member Functions inherited from Cpl::TShell::Processor
virtual Command::Result_T	executeCommand (char *deframedInput, Cpl::Io::Output &outfd) noexcept
	Helper method that attempts to execute the content of the de-framed/decoded 'inputString'.

bool	outputCommandError (Command::Result_T result, const char *deframedInput) noexcept
	Helper method.

int	getAndProcessFrame (Cpl::Io::Output &outfd) noexcept
	Helper method that performs a 'single' read cycle of the input stream.

virtual void	sortCommandList () noexcept
	Helper method.

Protected Attributes
Cpl::Io::Output *	m_outFd
	Cached output stream pointer.

Protected Attributes inherited from Cpl::TShell::Processor
Cpl::Container::SList< Command > &	m_commands
	Command list.

Cpl::Text::Frame::StreamDecoder &	m_deframer
	Raw input de-framer.

Cpl::Text::Frame::StreamEncoder &	m_framer
	Output framer handle.

Cpl::System::Mutex &	m_outLock
	Output lock.

Security::Permission_T	m_userPermLevel
	User's permission level.

char	m_comment
	Comment character.

char	m_esc
	Argument Escape character.

char	m_del
	Argument delimiter.

char	m_quote
	Argument quote character.

char	m_term
	Argument terminator character.

bool	m_writeCommandPrompt
	Set to true when 'command prompt' should be outputted.

size_t	m_frameSize
	Current frame size.

bool	m_running
	My run state.

char	m_inputBuffer [OPTION_CPL_TSHELL_PROCESSOR_INPUT_SIZE+1]
	Input Frame buffer.

Cpl::Text::FString< OPTION_CPL_TSHELL_PROCESSOR_OUTPUT_SIZE >	m_outputBuffer
	Buffer that is used to construct output messages.

Cpl::Text::FString< OPTION_CPL_TSHELL_PROCESSOR_INPUT_SIZE >	m_tokenBuffer
	Shared token work buffer.

Cpl::Text::FString< OPTION_CPL_TSHELL_PROCESSOR_INPUT_SIZE >	m_tokenBuffer2
	Shared token work buffer.

Constructor & Destructor Documentation

◆ PolledProcessor()

Cpl::TShell::PolledProcessor::PolledProcessor	(	Cpl::Container::SList< Command > &	commands,
		Cpl::Text::Frame::StreamDecoder &	deframer,
		Cpl::Text::Frame::StreamEncoder &	framer,
		Cpl::System::Mutex &	outputLock,
		char	commentChar = '#',
		char	argEscape = '`',
		char	argDelimiter = ' ',
		char	argQuote = '"',
		char	argTerminator = '\n',
		Security::Permission_T	initialPermissionLevel = Security::ePUBLIC )

Constructor.

Parameters

commands	Set of supported commands
deframer	Frame decoder used to identify individual command strings within the raw Input stream
framer	Frame encoder used to encapsulate the output of command in the Output stream.
outputLock	Mutex to be used for ensuring the atomic output of the commands.
commentChar	The comment character used to indicate that the input string is a comment and should not be executed.
argEscape	Escape character to be used when escaping double quote characters inside a quoted argument.
argDelimiter	The delimiter character used to separate the command verb and arguments.
argQuote	The quote character used to 'double quote' a argument string.
argTerminator	The command terminator character.
initialPermissionLevel	The initial minimum permission level that a user needs to issue command(s)