33 lines
758 B
C
33 lines
758 B
C
/***
|
|
* handles varint
|
|
*/
|
|
#ifndef _VARINT_H_
|
|
#define _VARINT_H_
|
|
#include <stdlib.h>
|
|
|
|
/**
|
|
* Encode an unsigned long long into a varint
|
|
* @param n the number to encode
|
|
* @param buf where to put the results
|
|
* @param len the length of buf
|
|
* @param bytes the length written
|
|
* @returns a pointer to the buf
|
|
*/
|
|
unsigned char* varint_encode(const unsigned long long n, unsigned char* buf, int len, size_t* bytes);
|
|
|
|
/***
|
|
* decode a varint
|
|
* @param buf the buffer that contains the varint
|
|
* @param len the length of the buffer
|
|
* @param bytes number of bytes processed
|
|
* @returns the value decoded
|
|
*/
|
|
unsigned long long varint_decode(const unsigned char* buf, int len, size_t* bytes);
|
|
|
|
/**
|
|
*
|
|
*/
|
|
int varint_encoding_length(unsigned long long n);
|
|
|
|
#endif
|