Package com.couchbase.client.dcp.core.utils

Class UnsignedLEB128

java.lang.Object
com.couchbase.client.dcp.core.utils.UnsignedLEB128
public class UnsignedLEB128 extends Object
Encodes and decodes the unsigned LEB128 (Little Endian Base 128) format. See https://en.wikipedia.org/wiki/LEB128

  • Method Summary

    Modifier and Type
    Method
    Description
    static long
    decode(byte[] bytes)
    Given a byte array starting with an unsigned LEB128 value, returns the decoded form of that value.
    static byte[]
    encode(long value)
    Returns a byte array containing the unsigned LEB128 representation of the given value.
    static long
    read(io.netty.buffer.ByteBuf buf)
    Reads an unsigned LEB128 value from the buffer.
    static void
    skip(io.netty.buffer.ByteBuf buf)
    Advances the buffer's reader index past the unsigned LEB128 value at the reader index.
    static void
    write(io.netty.buffer.ByteBuf buf, long value)
    Writes the unsigned LEB128 representation of the value to the buffer.

    Methods inherited from class java.lang.Object

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

  • Method Details

    • read

      public static long read(io.netty.buffer.ByteBuf buf)
      Reads an unsigned LEB128 value from the buffer. If this methods throws an exception the reader index remains unchanged, otherwise the index advances past the value.
      Returns:
      the decoded value
      Throws:
      ArithmeticException - if the decoded value is longer than 64 bits.
      IndexOutOfBoundsException - if the buffer's readable bytes do not contain a complete value.

    • skip

      public static void skip(io.netty.buffer.ByteBuf buf)
      Advances the buffer's reader index past the unsigned LEB128 value at the reader index. If this methods throws an exception the reader index will be unchanged.
      Throws:
      IndexOutOfBoundsException - if the buffer's readable bytes do not contain a complete value.

    • write

      public static void write(io.netty.buffer.ByteBuf buf, long value)
      Writes the unsigned LEB128 representation of the value to the buffer.

    • encode

      public static byte[] encode(long value)
      Returns a byte array containing the unsigned LEB128 representation of the given value.

    • decode

      public static long decode(byte[] bytes)
      Given a byte array starting with an unsigned LEB128 value, returns the decoded form of that value.
      Throws:
      ArithmeticException - if the decoded value is larger than 64 bits.
      IndexOutOfBoundsException - if the input does not contain a complete LEB128 value