zle.c File Reference

Zero-length encoding. More...

#include <sys/types.h>
#include <sys/sysmacros.h>

Include dependency graph for zle.c:

Go to the source code of this file.

Functions
size_t	zle_compress (void *s_start, void *d_start, size_t s_len, size_t d_len, int n)
int	zle_decompress (void *s_start, void *d_start, size_t s_len, size_t d_len, int n)

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Detailed Description

Zero-length encoding.

This is a fast and simple algorithm to eliminate runs of zeroes. Each chunk of compressed data begins with a length byte, b. If b < n (where n is the compression parameter) then the next b + 1 bytes are literal values. If b >= n then the next (256 - b + 1) bytes are zero.

Definition in file zle.c.

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Function Documentation

size_t zle_compress	(	void *	s_start,
		void *	d_start,
		size_t	s_len,
		size_t	d_len,
		int	n
	)

Definition at line 38 of file zle.c.

int zle_decompress	(	void *	s_start,
		void *	d_start,
		size_t	s_len,
		size_t	d_len,
		int	n
	)

Definition at line 68 of file zle.c.