Detailed Description

The low-level file communication class.

Definition at line 240 of file cmt1.h.

#include <xSens_MT3/cmt1.h>

Public Member Functions
	Cmt1f ()
	Default constructor, initializes all members to their default values. More...

	~Cmt1f ()
	Destructor. More...

XsensResultValue	appendData (const uint32_t length, const void *data)
	Write data to the end of the file. More...

XsensResultValue	close (void)
	Close the file. More...

XsensResultValue	closeAndDelete (void)
	Close the file and delete it. More...

XsensResultValue	create (const char *filename)
	Open an empty file. More...

XsensResultValue	create (const wchar_t *filename)
	Open an empty file using a unicode path + filename. More...

XsensResultValue	deleteData (const CmtFilePos start, const uint32_t length)
	Delete the given data from the file. The function erases the given data from the file at the given write position. This operation may take a while to complete, but is faster than insertData. More...

XsensResultValue	find (const void *needle, const uint32_t needleLength, CmtFilePos &pos)
	Find a string of bytes in the file. More...

XsensResultValue	flushData (void)
	Flush all data to be written. This function writes any remaining data immediately and does not return until this is done. More...

CmtFilePos	getFileSize (void) const
	Return the size of the file. More...

XsensResultValue	getLastResult (void) const
	Return the result code of the last operation. More...

XsensResultValue	getName (char *filename) const
	Retrieve the filename that was last successfully opened. More...

XsensResultValue	getName (wchar_t *filename) const
	Retrieve the filename that was last successfully opened in unicode. More...

CmtFilePos	getReadPos (void) const
	Return the current read position. More...

CmtFilePos	getWritePos (void) const
	Return the current write position. More...

XsensResultValue	insertData (const CmtFilePos start, const uint32_t length, const void *data)
	Insert the given data into the file. The function writes the given data to the file at the current write position. This operation may take a while to complete. More...

bool	isOpen (void) const
	Return whether the file is open or not. More...

bool	isReadOnly (void) const
	Return whether the file is readonly or not. More...

XsensResultValue	open (const char *filename, const bool create, const bool readOnly)
	Open a file. More...

XsensResultValue	open (const wchar_t *filename, const bool create, const bool readOnly)
	Open a file using a unicode filename. More...

XsensResultValue	readData (const uint32_t maxLength, void data, uint32_t length)
	Read data from the file and put it into the data buffer. More...

XsensResultValue	readData (const uint32_t maxLength, const char terminator, void data, uint32_t length)
	Read data from the file and put it into the data buffer. More...

XsensResultValue	setReadPos (const CmtFilePos pos)
	Set the new absolute read position. More...

XsensResultValue	setWritePos (const CmtFilePos pos=-1)
	Set the new absolute write position. More...

XsensResultValue	writeData (const uint32_t length, const void *data)
	Write data to the file. More...

Protected Member Functions
void	gotoRead (void)
	Change from writing to reading mode. More...

void	gotoWrite (void)
	Change from reading to writing mode. More...

Protected Attributes
FILE *	m_handle
	The file handle. More...

CmtFilePos	m_fileSize
	Contains the size of the file. More...

CmtFilePos	m_readPos
	The last read position in the file. More...

CmtFilePos	m_writePos
	The last write position in the file. More...

XsensResultValue	m_lastResult
	The last result of an operation. More...

char	m_filename [CMT_MAX_FILENAME_LENGTH]
	Contains the name of the file that was last successfully opened. More...

wchar_t	m_filename_w [CMT_MAX_FILENAME_LENGTH]
	Contains the name of the file that was last successfully opened using unicode. More...

bool	m_isOpen
	Indicates if the file is open or not. More...

bool	m_unicode
	Indicates if we're using the unicode filename or the regular filename. More...

bool	m_reading
	Indicates whether the last operation was a read or write operation. This value is used to check whether or not a seek is required to perform a requested read or write operation. More...

bool	m_readOnly
	Indicates if the file was opened in read-only mode. More...

Private Member Functions
	Cmt1f (const Cmt1f &ref)
	This object cannot be copied, so this function is not implemented. More...

Constructor & Destructor Documentation

◆ Cmt1f() [1/2]

xsens::Cmt1f::Cmt1f ( const Cmt1f & ref )

private

This object cannot be copied, so this function is not implemented.

◆ Cmt1f() [2/2]

xsens::Cmt1f::Cmt1f ( )

Default constructor, initializes all members to their default values.

Definition at line 676 of file cmt1.cpp.

References m_filename, m_fileSize, m_isOpen, m_lastResult, m_reading, m_readOnly, m_readPos, m_unicode, m_writePos, and XRV_OK.

◆ ~Cmt1f()

xsens::Cmt1f::~Cmt1f ( )

Destructor.

Definition at line 691 of file cmt1.cpp.

References close().

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Member Function Documentation

◆ appendData()

XsensResultValue xsens::Cmt1f::appendData	(	const uint32_t	length,
		const void *	data
	)

Write data to the end of the file.

The function writes the given data to the file at the end. The current write position is also moved to the end of the file.

Definition at line 694 of file cmt1.cpp.

References FSEEK_R, FTELL, m_fileSize, m_handle, m_isOpen, m_lastResult, m_reading, m_readOnly, m_writePos, XRV_NOFILEOPEN, XRV_OK, and XRV_READONLY.

Referenced by xsens::Cmt2f::writeMessage().

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◆ close()

XsensResultValue xsens::Cmt1f::close ( void )

Close the file.

Definition at line 713 of file cmt1.cpp.

References mrpt::system::os::fclose(), m_fileSize, m_handle, m_isOpen, m_lastResult, m_reading, m_readOnly, m_readPos, m_writePos, and XRV_OK.

Referenced by xsens::Cmt2f::close(), xsens::Cmt2f::create(), and ~Cmt1f().

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◆ closeAndDelete()

XsensResultValue xsens::Cmt1f::closeAndDelete ( void )

Close the file and delete it.

Definition at line 737 of file cmt1.cpp.

References mrpt::system::os::fclose(), m_filename, m_filename_w, m_fileSize, m_handle, m_isOpen, m_lastResult, m_reading, m_readOnly, m_readPos, m_unicode, m_writePos, XRV_NOFILEOPEN, XRV_OK, and XRV_READONLY.

Referenced by xsens::Cmt2f::closeAndDelete().

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◆ create() [1/2]

XsensResultValue xsens::Cmt1f::create ( const char * filename )

Open an empty file.

Definition at line 789 of file cmt1.cpp.

References CMT_MAX_FILENAME_LENGTH, mrpt::system::os::fclose(), mrpt::system::os::fopen(), m_filename, m_filename_w, m_fileSize, m_handle, m_isOpen, m_lastResult, m_reading, m_readOnly, m_readPos, m_unicode, m_writePos, XRV_ALREADYOPEN, XRV_INVALIDPARAM, XRV_OK, and XRV_OUTPUTCANNOTBEOPENED.

Referenced by xsens::Cmt2f::create(), create(), and open().

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◆ create() [2/2]

XsensResultValue xsens::Cmt1f::create ( const wchar_t * filename )

Open an empty file using a unicode path + filename.

Definition at line 830 of file cmt1.cpp.

References CMT_MAX_FILENAME_LENGTH, create(), mrpt::system::os::fclose(), m_filename, m_filename_w, m_fileSize, m_handle, m_isOpen, m_lastResult, m_reading, m_readOnly, m_readPos, m_unicode, m_writePos, MRPT_UNUSED_PARAM, XRV_ALREADYOPEN, XRV_INVALIDPARAM, XRV_OK, and XRV_OUTPUTCANNOTBEOPENED.

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◆ deleteData()

XsensResultValue xsens::Cmt1f::deleteData	(	const CmtFilePos	start,
		const uint32_t	length
	)

Delete the given data from the file. The function erases the given data from the file at the given write position. This operation may take a while to complete, but is faster than insertData.

The write position is not changed and the read position is checked for validity.

Definition at line 867 of file cmt1.cpp.

References FSEEK, gotoWrite(), m_fileSize, m_handle, m_isOpen, m_lastResult, m_readOnly, m_writePos, XRV_BUSY, XRV_ERROR, XRV_INVALIDINSTANCE, XRV_INVALIDPARAM, XRV_NOFILEOPEN, XRV_OK, XRV_OUTOFMEMORY, and XRV_READONLY.

Referenced by xsens::Cmt2f::create().

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◆ find()

XsensResultValue xsens::Cmt1f::find	(	const void *	needle,
		const uint32_t	needleLength,
		CmtFilePos &	pos
	)

Find a string of bytes in the file.

The function searches from the current read position until the given needle is found. If the needle is not found, XsensResultValue::NOT_FOUND is returned. The function will update the seek position to the first character of the found needle.

Parameters

needle	The byte string to find.
needleLength	The length of the byte string.
pos	Out: The position where the needle was found. This will point to the first character of the found needle.

Definition at line 941 of file cmt1.cpp.

References FSEEK, gotoRead(), m_handle, m_isOpen, m_lastResult, m_readPos, XRV_ENDOFFILE, XRV_NOFILEOPEN, and XRV_OK.

Referenced by xsens::Cmt2f::readMessage().

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◆ flushData()

XsensResultValue xsens::Cmt1f::flushData ( void )

Flush all data to be written. This function writes any remaining data immediately and does not return until this is done.

Definition at line 1001 of file cmt1.cpp.

References m_handle, m_lastResult, and XRV_OK.

◆ getFileSize()

CmtFilePos xsens::Cmt1f::getFileSize ( void ) const

inline

Return the size of the file.

Definition at line 329 of file cmt1.h.

References m_fileSize.

Referenced by xsens::Cmt2f::getFileSize().

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◆ getLastResult()

XsensResultValue xsens::Cmt1f::getLastResult ( void ) const

inline

Return the result code of the last operation.

Definition at line 331 of file cmt1.h.

References m_lastResult.

◆ getName() [1/2]

XsensResultValue xsens::Cmt1f::getName ( char * filename ) const

Retrieve the filename that was last successfully opened.

Parameters

filename A buffer for storing the filename. The buffer should be able to hold the filename. A safe size is to make it at least 256 bytes.

Definition at line 1010 of file cmt1.cpp.

References m_filename, m_lastResult, mrpt::system::os::strcpy(), and XRV_OK.

Referenced by xsens::Cmt2f::getName().

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◆ getName() [2/2]

XsensResultValue xsens::Cmt1f::getName ( wchar_t * filename ) const

Retrieve the filename that was last successfully opened in unicode.

Parameters

filename A buffer for storing the filename. The buffer should be able to hold the filename. A safe size is to make it at least 256 wide characters.

Definition at line 1018 of file cmt1.cpp.

References CMT_MAX_FILENAME_LENGTH, m_filename, m_filename_w, m_lastResult, and XRV_OK.

◆ getReadPos()

CmtFilePos xsens::Cmt1f::getReadPos ( void ) const

inline

Return the current read position.

Definition at line 350 of file cmt1.h.

References m_readPos.

Referenced by xsens::Cmt2f::getReadPosition().

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◆ getWritePos()

CmtFilePos xsens::Cmt1f::getWritePos ( void ) const

inline

Return the current write position.

Definition at line 352 of file cmt1.h.

References m_writePos.

◆ gotoRead()

void xsens::Cmt1f::gotoRead ( void )

protected

Change from writing to reading mode.

Definition at line 1030 of file cmt1.cpp.

References FSEEK, m_reading, and m_readPos.

Referenced by find(), and readData().

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◆ gotoWrite()

void xsens::Cmt1f::gotoWrite ( void )

protected

Change from reading to writing mode.

Definition at line 1040 of file cmt1.cpp.

References FSEEK, m_reading, and m_writePos.

Referenced by deleteData(), insertData(), and writeData().

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◆ insertData()

XsensResultValue xsens::Cmt1f::insertData	(	const CmtFilePos	start,
		const uint32_t	length,
		const void *	data
	)

Insert the given data into the file. The function writes the given data to the file at the current write position. This operation may take a while to complete.

The write position is placed at the end of the inserted data.

Definition at line 1050 of file cmt1.cpp.

References FSEEK, gotoWrite(), m_fileSize, m_handle, m_isOpen, m_lastResult, m_readOnly, m_writePos, XRV_NOFILEOPEN, XRV_OK, and XRV_READONLY.

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◆ isOpen()

bool xsens::Cmt1f::isOpen ( void ) const

inline

Return whether the file is open or not.

Definition at line 363 of file cmt1.h.

References m_isOpen.

Referenced by xsens::Cmt2f::close(), xsens::Cmt2f::closeAndDelete(), xsens::Cmt2f::create(), xsens::Cmt2f::isOpen(), and xsens::Cmt2f::open().

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◆ isReadOnly()

bool xsens::Cmt1f::isReadOnly ( void ) const

inline

Return whether the file is readonly or not.

Definition at line 365 of file cmt1.h.

References m_isOpen, and m_readOnly.

◆ open() [1/2]

XsensResultValue xsens::Cmt1f::open	(	const char *	filename,
		const bool	create,
		const bool	readOnly
	)

Open a file.

Definition at line 1116 of file cmt1.cpp.

References CMT_MAX_FILENAME_LENGTH, create(), mrpt::system::os::fclose(), mrpt::system::os::fopen(), FSEEK, FSEEK_R, FTELL, m_filename, m_filename_w, m_fileSize, m_handle, m_isOpen, m_lastResult, m_reading, m_readOnly, m_readPos, m_unicode, m_writePos, XRV_ALREADYOPEN, XRV_INPUTCANNOTBEOPENED, XRV_INVALIDPARAM, and XRV_OK.

Referenced by xsens::Cmt2f::open(), and open().

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◆ open() [2/2]

XsensResultValue xsens::Cmt1f::open	(	const wchar_t *	filename,
		const bool	create,
		const bool	readOnly
	)

Open a file using a unicode filename.

Definition at line 1169 of file cmt1.cpp.

References CMT_MAX_FILENAME_LENGTH, create(), mrpt::system::os::fclose(), FSEEK, FSEEK_R, FTELL, m_filename, m_filename_w, m_fileSize, m_handle, m_isOpen, m_lastResult, m_reading, m_readOnly, m_readPos, m_unicode, m_writePos, open(), XRV_ALREADYOPEN, XRV_INPUTCANNOTBEOPENED, XRV_INVALIDPARAM, and XRV_OK.

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◆ readData() [1/2]

XsensResultValue xsens::Cmt1f::readData	(	const uint32_t	maxLength,
		void *	data,
		uint32_t *	length
	)

Read data from the file and put it into the data buffer.

This function reads exactly the number of bytes as requested from the file.

Parameters

maxLength	The amount of data that will be read.
data	Pointer to a buffer that will store the read data.
length	pointer to a variable that will store the number of bytes that were actually read. The parameter may be NULL.

Definition at line 1220 of file cmt1.cpp.

References gotoRead(), m_handle, m_isOpen, m_lastResult, m_readPos, XRV_ENDOFFILE, XRV_NOFILEOPEN, and XRV_OK.

Referenced by xsens::Cmt2f::readMessage().

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◆ readData() [2/2]

XsensResultValue xsens::Cmt1f::readData	(	const uint32_t	maxLength,
		const char	terminator,
		void *	data,
		uint32_t *	length
	)

Read data from the file and put it into the data buffer.

This function reads upp to the number of bytes as requested from the file. The function will also stop if the given terminator character is encountered. The terminator is included in the output buffer.

Parameters

maxLength	The amount of data that will be read.
data	Pointer to a buffer that will store the read data.
terminator	A character that will end the read operation if encountered.
length	The actual number of bytes read, including the terminator character, if encountered.

Definition at line 1241 of file cmt1.cpp.

References gotoRead(), m_handle, m_isOpen, m_lastResult, m_readPos, XRV_ENDOFFILE, XRV_NOFILEOPEN, and XRV_OK.

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◆ setReadPos()

XsensResultValue xsens::Cmt1f::setReadPos ( const CmtFilePos pos )

Set the new absolute read position.

The read position is checked against the filesize before committing.

Definition at line 1272 of file cmt1.cpp.

References FSEEK, m_isOpen, m_lastResult, m_reading, m_readPos, XRV_NOFILEOPEN, and XRV_OK.

Referenced by xsens::Cmt2f::readMessage(), and xsens::Cmt2f::setReadPosition().

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◆ setWritePos()

XsensResultValue xsens::Cmt1f::setWritePos ( const CmtFilePos pos = -1 )

Set the new absolute write position.

The write position is checked against the filesize before committing.

Definition at line 1287 of file cmt1.cpp.

References FSEEK, FSEEK_R, FTELL, m_isOpen, m_lastResult, m_reading, m_readOnly, m_writePos, XRV_NOFILEOPEN, XRV_OK, and XRV_READONLY.

◆ writeData()

XsensResultValue xsens::Cmt1f::writeData	(	const uint32_t	length,
		const void *	data
	)

Write data to the file.

The function writes the given data to the file at the current write position.

Definition at line 1312 of file cmt1.cpp.

References gotoWrite(), m_fileSize, m_handle, m_isOpen, m_lastResult, m_readOnly, m_writePos, XRV_NOFILEOPEN, XRV_OK, and XRV_READONLY.

Referenced by xsens::Cmt2f::create().

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Member Data Documentation

◆ m_filename

char xsens::Cmt1f::m_filename[CMT_MAX_FILENAME_LENGTH]

protected

Contains the name of the file that was last successfully opened.

Definition at line 258 of file cmt1.h.

Referenced by closeAndDelete(), Cmt1f(), create(), getName(), and open().

◆ m_filename_w

wchar_t xsens::Cmt1f::m_filename_w[CMT_MAX_FILENAME_LENGTH]

protected

Contains the name of the file that was last successfully opened using unicode.

Definition at line 261 of file cmt1.h.

Referenced by closeAndDelete(), create(), getName(), and open().

◆ m_fileSize

CmtFilePos xsens::Cmt1f::m_fileSize

protected

Contains the size of the file.

Definition at line 250 of file cmt1.h.

Referenced by appendData(), close(), closeAndDelete(), Cmt1f(), create(), deleteData(), getFileSize(), insertData(), open(), and writeData().

◆ m_handle

FILE* xsens::Cmt1f::m_handle

protected

The file handle.

Definition at line 248 of file cmt1.h.

Referenced by appendData(), close(), closeAndDelete(), create(), deleteData(), find(), flushData(), insertData(), open(), readData(), and writeData().

◆ m_isOpen

bool xsens::Cmt1f::m_isOpen

protected

Indicates if the file is open or not.

Definition at line 263 of file cmt1.h.

Referenced by appendData(), close(), closeAndDelete(), Cmt1f(), create(), deleteData(), find(), insertData(), isOpen(), isReadOnly(), open(), readData(), setReadPos(), setWritePos(), and writeData().

◆ m_lastResult

XsensResultValue xsens::Cmt1f::m_lastResult

mutableprotected

The last result of an operation.

Definition at line 256 of file cmt1.h.

Referenced by appendData(), close(), closeAndDelete(), Cmt1f(), create(), deleteData(), find(), flushData(), getLastResult(), getName(), insertData(), open(), readData(), setReadPos(), setWritePos(), and writeData().

◆ m_reading

bool xsens::Cmt1f::m_reading

protected

Indicates whether the last operation was a read or write operation. This value is used to check whether or not a seek is required to perform a requested read or write operation.

Definition at line 270 of file cmt1.h.

Referenced by appendData(), close(), closeAndDelete(), Cmt1f(), create(), gotoRead(), gotoWrite(), open(), setReadPos(), and setWritePos().

◆ m_readOnly

bool xsens::Cmt1f::m_readOnly

protected

Indicates if the file was opened in read-only mode.

Definition at line 272 of file cmt1.h.

Referenced by appendData(), close(), closeAndDelete(), Cmt1f(), create(), deleteData(), insertData(), isReadOnly(), open(), setWritePos(), and writeData().

◆ m_readPos

CmtFilePos xsens::Cmt1f::m_readPos

protected

The last read position in the file.

Definition at line 252 of file cmt1.h.

Referenced by close(), closeAndDelete(), Cmt1f(), create(), find(), getReadPos(), gotoRead(), open(), readData(), and setReadPos().

◆ m_unicode

bool xsens::Cmt1f::m_unicode

protected

Indicates if we're using the unicode filename or the regular filename.

Definition at line 265 of file cmt1.h.

Referenced by closeAndDelete(), Cmt1f(), create(), and open().

◆ m_writePos

CmtFilePos xsens::Cmt1f::m_writePos

protected

The last write position in the file.

Definition at line 254 of file cmt1.h.

Referenced by appendData(), close(), closeAndDelete(), Cmt1f(), create(), deleteData(), getWritePos(), gotoWrite(), insertData(), open(), setWritePos(), and writeData().

Detailed Description

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Constructor & Destructor Documentation

◆ Cmt1f() [1/2]

◆ Cmt1f() [2/2]

◆ ~Cmt1f()

Member Function Documentation

◆ appendData()

◆ close()

◆ closeAndDelete()

◆ create() [1/2]

◆ create() [2/2]

◆ deleteData()

◆ find()

◆ flushData()

◆ getFileSize()

◆ getLastResult()

◆ getName() [1/2]

◆ getName() [2/2]

◆ getReadPos()

◆ getWritePos()

◆ gotoRead()

◆ gotoWrite()

◆ insertData()

◆ isOpen()

◆ isReadOnly()

◆ open() [1/2]

◆ open() [2/2]

◆ readData() [1/2]

◆ readData() [2/2]

◆ setReadPos()

◆ setWritePos()

◆ writeData()

Member Data Documentation

◆ m_filename

◆ m_filename_w

◆ m_fileSize

◆ m_handle

◆ m_isOpen

◆ m_lastResult

◆ m_reading

◆ m_readOnly

◆ m_readPos

◆ m_unicode

◆ m_writePos