zlibcomplete::RawDeflater Class Reference

Raw ZLib compression class using std::string for input and output. More...

#include <zlibraw.hpp>

Inheritance diagram for zlibcomplete::RawDeflater:

Public Member Functions
	RawDeflater (int level=9, flush_parameter autoFlush=auto_flush, int windowBits=15)
	~RawDeflater (void)
std::string	deflate (const std::string &input)
	Compresses data. Uses std::string for input and output. More...
std::string	finish (void)
	Writes a termination block to the raw zlib stream indicating the end. More...

Detailed Description

Raw ZLib compression class using std::string for input and output.

Implements raw zlib compression using std::string for input and output. To use, simply call compress() zero or more times and then call finish(). This class does not write a header, so it is necessary to match up the window_bits parameter for the inflate and deflate methods. This class implements RFC 1951.

Constructor & Destructor Documentation

zlibcomplete::RawDeflater::RawDeflater	(	int	level = 9,
		flush_parameter	autoFlush = auto_flush,
		int	windowBits = 15
	)

Accepts the standard three parameters for compression constructors.

Parameters

level	Compression level 1-9, defaulting to 9, the best compression.
flush_parameter	Flush mode, either auto_flush or no_flush, defaulting to auto_flush mode.
window_bits	Size of history window between 8 and 15, defaulting to 15. It is important to pass the same number to the RawInflater constructor.

zlibcomplete::RawDeflater::~RawDeflater

(

void

)

Member Function Documentation

std::string zlibcomplete::RawDeflater::deflate

(

const std::string &

input

)

Compresses data. Uses std::string for input and output.

Accepts a std::string of any size containing data to compress. Returns as much raw zlib compressed data as possible. In auto_flush mode, this will ensure that the returned data is immediately decompressible to the original data. In no_flush mode, the data may not all be available until the rest of the compressed data is written using more compress() or a finish() call. After calling compress() zero or more times, it is necessary to call finish() exactly once.

Parameters

input

Any amount of data to compress.

Return values

std::string

containing compressed data.

std::string zlibcomplete::RawDeflater::finish

(

void

)

Writes a termination block to the raw zlib stream indicating the end.

Flushes any remaining data that has not yet been written and then writes a terminal block to the compressed data stream. Returns this compressed data as a std::string. This function should be called exactly once for each compressed data stream.

Return values

std::string

containing the last piece of compressed data.

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

• lib/zlc/zlibraw.hpp
• lib/raw.cpp