Writes and reads strings to and from bitstreams. More...

#include <StringCompressor.h>

Public Member Functions
bool	DecodeString (char output, int maxCharsToWrite, RakNet::BitStream input, uint8_t languageId=0)
bool	DecodeString (RakNet::RakString output, int maxCharsToWrite, RakNet::BitStream input, uint8_t languageId=0)
void	EncodeString (const char input, int maxCharsToWrite, RakNet::BitStream output, uint8_t languageId=0)
void	EncodeString (const RakNet::RakString input, int maxCharsToWrite, RakNet::BitStream output, uint8_t languageId=0)
void	GenerateTreeFromStrings (unsigned char *input, unsigned inputLength, uint8_t languageId)
	StringCompressor ()
	~StringCompressor ()
Static Public Member Functions
static void	AddReference (void)
	Used so I can allocate and deallocate this singleton at runtime.
static StringCompressor *	Instance (void)
static void	RemoveReference (void)
	Used so I can allocate and deallocate this singleton at runtime.
Private Attributes
DataStructures::Map< int, HuffmanEncodingTree * >	huffmanEncodingTrees
	Pointer to the huffman encoding trees.
Static Private Attributes
static StringCompressor *	instance
	Singleton instance.
static int	referenceCount

Detailed Description

Only works with ASCII strings. The default compression is for English. You can call GenerateTreeFromStrings to compress and decompress other languages efficiently as well.

Definition at line 38 of file StringCompressor.h.

Constructor & Destructor Documentation

RakNet::StringCompressor::~StringCompressor ( )

RakNet::StringCompressor::StringCompressor ( )

Member Function Documentation

static void RakNet::StringCompressor::AddReference ( void ) [static]

bool RakNet::StringCompressor::DecodeString	(	char *	output,
		int	maxCharsToWrite,
		RakNet::BitStream *	input,
		uint8_t	languageId = `0`
	)

Writes input to output, uncompressed. Takes care of the null terminator for you.

Parameters:

[out]	output	A block of bytes to receive the output
[in]	maxCharsToWrite	Size, in bytes, of output . A NULL terminator will always be appended to the output string. If the maxCharsToWrite is not large enough, the string will be truncated.
[in]	input	The bitstream containing the compressed string
[in]	languageID	Which language to use

bool RakNet::StringCompressor::DecodeString	(	RakNet::RakString *	output,
		int	maxCharsToWrite,
		RakNet::BitStream *	input,
		uint8_t	languageId = `0`
	)

void RakNet::StringCompressor::EncodeString	(	const char *	input,
		int	maxCharsToWrite,
		RakNet::BitStream *	output,
		uint8_t	languageId = `0`
	)

Writes input to output, compressed. Takes care of the null terminator for you.

Parameters:

[in]	input	Pointer to an ASCII string
[in]	maxCharsToWrite	The max number of bytes to write of input. Use 0 to mean no limit.
[out]	output	The bitstream to write the compressed string to
[in]	languageID	Which language to use

void RakNet::StringCompressor::EncodeString	(	const RakNet::RakString *	input,
		int	maxCharsToWrite,
		RakNet::BitStream *	output,
		uint8_t	languageId = `0`
	)

void RakNet::StringCompressor::GenerateTreeFromStrings	(	unsigned char *	input,
		unsigned	inputLength,
		uint8_t	languageId
	)

Given an array of strings, such as a chat log, generate the optimal encoding tree for it. This function is optional and if it is not called a default tree will be used instead.

Parameters:

[in]	input	An array of bytes which should point to text.
[in]	inputLength	Length of input
[in]	languageID	An identifier for the language / string table to generate the tree for. English is automatically created with ID 0 in the constructor.

static StringCompressor* RakNet::StringCompressor::Instance ( void ) [static]

static function because only static functions can access static members The RakPeer constructor adds a reference to this class, so don't call this until an instance of RakPeer exists, or unless you call AddReference yourself.