A class for automatically creating unique pseudo-random filenames. More...

Public Member Functions
	OFFilenameCreator ()
	default constructor
	OFFilenameCreator (const OFFilenameCreator &copy)
	copy constructor
virtual	~OFFilenameCreator ()
	destructor
OFFilenameCreator &	operator= (const OFFilenameCreator &copy)
	assignment operator
OFBool	makeFilename (unsigned int &seed, const char dir, const char prefix, const char *postfix, OFString &filename)
	creates a new unique filename.

Static Public Member Functions
static unsigned int	hashString (const char *str)
	creates hash value.

Static Private Member Functions
static void	addLongToString (unsigned long l, OFString &s)
	appends the lower 32 bit of the given number to the given string.

Private Attributes
unsigned long	creation_time
	date/time of creation of this object

Detailed Description

A class for automatically creating unique pseudo-random filenames.

Member Function Documentation

void OFFilenameCreator::addLongToString	(	unsigned long	l,
		OFString &	s )

staticprivate

appends the lower 32 bit of the given number to the given string.

Always appends exactly 8 digits (padded with leading zeros).

Parameters

l	number to be appended to string
s	string to be added to

unsigned int OFFilenameCreator::hashString ( const char * str )

static

creates hash value.

(i.e. random seed) from character string.

Parameters

str	null-terminated string

OFBool OFFilenameCreator::makeFilename	(	unsigned int &	seed,
		const char *	dir,
		const char *	prefix,
		const char *	postfix,
		OFString &	filename )

creates a new unique filename.

Parameters

seed	seed of random number generator
dir	directory in which the file name should be located
prefix	filename prefix
postfix	filename postfix
filename	string in which the filename (path) is returned

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