com.mixer.interactive.util

Class Varint

java.lang.Object

com.mixer.interactive.util.Varint

public class Varint
extends Object

Encodes signed and unsigned values using a common variable-length scheme, found for example in Google's Protocol Buffers. It uses fewer bytes to encode smaller values, but will use slightly more bytes to encode large values.

Signed values are further encoded using so-called zig-zag encoding in order to make them "compatible" with variable-length encoding.

Copied from https://github.com/addthis/stream-lib/blob/644e4e9be40e0eb69a9aef6acee6ca28643f174b/src/main/java/com/clearspring/analytics/util/Varint.java

Since:

1.0.0

Author:

unascribed

Method Summary

Modifier and Type	Method and Description
static int	readUnsignedVarInt(byte[] bytes) Decodes a value using the variable-length encoding from Google's Protocol Buffers
static byte[]	writeUnsignedVarInt(int value) Encodes a value using the variable-length encoding from Google's Protocol Buffers.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

writeUnsignedVarInt

public static byte[] writeUnsignedVarInt(int value)

Encodes a value using the variable-length encoding from Google's Protocol Buffers. Zig-zag is not used, so input must not be negative. This method treats negative input as like a large unsigned value.

Parameters:

value - Value to encode

Returns:

Encoded value (as an array of bytes)

Since:

1.0.0

readUnsignedVarInt

public static int readUnsignedVarInt(byte[] bytes)

Decodes a value using the variable-length encoding from Google's Protocol Buffers

Parameters:

bytes - Encoded byte array

Returns:

Decoded value

Since:

1.0.0