YGP::FileTypeCheckerByContent Class Reference

Type to check for type of files by the content of the file. More...

Inherits YGP::FileTypeChecker.

List of all members.

Classes
struct	ID
Public Types
typedef bool(*	MATCHFNC )(char *, const char *, unsigned int, std::ifstream &)
Public Member Functions
	FileTypeCheckerByContent ()
	~FileTypeCheckerByContent ()
virtual unsigned int	getType (const char *file) const
void	addType (unsigned int type, MATCHFNC fnMatch)
void	addType (unsigned int start, unsigned int len, const char *text, unsigned int type, MATCHFNC fnMatch=matchFirstBytes)
Static Public Member Functions
static bool	matchFirstBytes (char *buffer, const char *text, unsigned int length, std::ifstream &stream)
Static Protected Member Functions
static bool	isHTML (char *buffer, const char *text, unsigned int length, std::ifstream &stream)
static bool	isMP3 (char *buffer, const char *text, unsigned int length, std::ifstream &stream)
static bool	isOOffice (char *buffer, const char *text, unsigned int length, std::ifstream &stream)
static bool	isStarOffice (char *buffer, const char *text, unsigned int length, std::ifstream &stream)
static bool	isMSOffice (char *buffer, const char *text, unsigned int length, std::ifstream &stream)
static bool	isOfficeOpenXML (char *buffer, const char *text, unsigned int length, std::ifstream &stream)

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Detailed Description

Type to check for type of files by the content of the file.

Further types can be added by the addType()-members

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Constructor & Destructor Documentation

YGP::FileTypeCheckerByContent::FileTypeCheckerByContent

(

)

Defaultconstructor.

YGP::FileTypeCheckerByContent::~FileTypeCheckerByContent

(

)

Destructor.

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Member Function Documentation

void YGP::FileTypeCheckerByContent::addType	(	unsigned int	start,
		unsigned int	len,
		const char *	text,
		unsigned int	type,
		MATCHFNC	fnMatch = matchFirstBytes
	)			[inline]

Adds a new handled type.

Parameters:

	type	Type of file
	fnMatch	Method to check for file of type

void YGP::FileTypeCheckerByContent::addType	(	unsigned int	type,
		MATCHFNC	fnMatch
	)			[inline]

Adds a new handled type.

Parameters:

	type	Type of file
	fnMatch	Method to check for file of type

unsigned int YGP::FileTypeCheckerByContent::getType

(

const char *

file

)

const [virtual]

Gets the type of the passed file.

Returns the class of the file (e.g.

Parameters:

file

File to analyse

Returns:

unsigned int Type of file

MS Office document) according to passed file-name

Parameters:

file

File to inspect

Returns:

unsigned int Class of file

Implements YGP::FileTypeChecker.

bool YGP::FileTypeCheckerByContent::isHTML	(	char *	buffer,
		const char *	text,
		unsigned int	length,
		std::ifstream &	stream
	)			[static, protected]

Checks if the buffer contains HTML-code; HTML-comments are skipped.

If necessary additional data is read from the stream

Parameters:

	buffer	Buffer to inspect
	text	Text to match
	length	Number of bytes to check
	stream	Stream from where to read more characters

Returns:

bool True, if the text matches

bool YGP::FileTypeCheckerByContent::isMP3	(	char *	buffer,
		const char *	text,
		unsigned int	length,
		std::ifstream &	stream
	)			[static, protected]

Checks if the first two bytes in the buffer are an MP3-ID tag.

Parameters:

	buffer	Buffer to inspect
	text	Text to match
	length	Number of bytes to check
	stream	Stream from where to read more characters

Returns:

bool True, if the text matches

bool YGP::FileTypeCheckerByContent::isMSOffice	(	char *	buffer,
		const char *	text,
		unsigned int	length,
		std::ifstream &	stream
	)			[static, protected]

Checks if the first bytes in buffer identify a MSOffice-document.

As StarOffice- documents have the same identifier, check position 0xc2 of the stream if it does not contain a StarOffice-identifier.

Parameters:

	buffer	Buffer to inspect
	text	Text to match
	length	Number of bytes to check
	stream	Stream from where to read more characters

Returns:

bool True, if the text matches

bool YGP::FileTypeCheckerByContent::isOfficeOpenXML	(	char *	buffer,
		const char *	text,
		unsigned int	length,
		std::ifstream &	stream
	)			[static, protected]

Checks if the passed stream is an MS-Office 2007 document.

Parameters:

	buffer	Buffer to inspect (ignored)
	text	Text to match (ignored)
	length	Number of bytes to check (ignored)
	stream	Stream from where to read more characters

Returns:

bool True, if the text matches

bool YGP::FileTypeCheckerByContent::isOOffice	(	char *	buffer,
		const char *	text,
		unsigned int	length,
		std::ifstream &	stream
	)			[static, protected]

Checks if the first four bytes in buffer identify a ZIP-archive.

If so, check if the file could be an OpenOffice-document

Parameters:

	buffer	Buffer to inspect (ignored)
	text	Text to match (ignored)
	length	Number of bytes to check (ignored)
	stream	Stream from where to read more characters

Returns:

bool True, if the text matches

bool YGP::FileTypeCheckerByContent::isStarOffice	(	char *	buffer,
		const char *	text,
		unsigned int	length,
		std::ifstream &	stream
	)			[static, protected]

Checks if the first bytes in buffer identify a MSOffice-document which also identifies a StarOffice-document.

The latter has another identifier at position 0xc2.

Parameters:

	buffer	Buffer to inspect
	text	Text to match
	length	Number of bytes to check
	stream	Stream from where to read more characters

Returns:

bool True, if the text matches

bool YGP::FileTypeCheckerByContent::matchFirstBytes	(	char *	buffer,
		const char *	text,
		unsigned int	length,
		std::ifstream &	stream
	)			[static]

Checks if the first bytes in buffer machtes the passed value.

Parameters:

	buffer	Buffer to inspect
	text	Text to match
	length	Number of bytes to check
	stream	Stream from where to read more characters

Returns:

bool True, if the text matches

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

• FileTypeChk.h
• FileTypeChk.cpp