Varint v1.2.0 Varint.LEB128 View Source

This module provides functions to work with LEB128 encoded integers.

Link to this section Summary

Functions

decode(b)

Decodes LEB128 encoded bytes to an unsigned integer

encode(v)

Encodes an unsigned integer using LEB128 compression

Link to this section Functions

decode(b)

decode(binary()) :: {non_neg_integer(), binary()}

Decodes LEB128 encoded bytes to an unsigned integer.

Returns a tuple where the first element is the decoded value and the second element the bytes which have not been parsed.

iex> Varint.LEB128.decode(<<172, 2>>)
{300, <<>>}

iex> Varint.LEB128.decode(<<172, 2, 0>>)
{300, <<0>>}

iex> Varint.LEB128.decode(<<0>>)
{0, <<>>}

iex> Varint.LEB128.decode(<<1>>)
{1, <<>>}

encode(v)

encode(non_neg_integer()) :: binary()

Encodes an unsigned integer using LEB128 compression.

iex> Varint.LEB128.encode(300)
<<172, 2>>

iex> Varint.LEB128.encode(0)
<<0>>

iex> Varint.LEB128.encode(1)
<<1>>