org.kocakosm.pitaya.util

Class BigEndian

java.lang.Object

org.kocakosm.pitaya.util.BigEndian

public final class BigEndian
extends Object

Big-endian encoding and decoding.

Author:

Osman KOCAK

Method Summary

Methods

Modifier and Type	Method and Description
static int	decodeInt(byte[] in) Decodes the first 4 bytes of the given array into an int value using big-endian byte ordering convention.
static int	decodeInt(byte[] in, int off) Decodes the first 4 bytes starting at off of the given array into an int value using big-endian byte ordering convention.
static long	decodeLong(byte[] in) Decodes the first 8 bytes of the given array into a long value using big-endian byte ordering convention.
static long	decodeLong(byte[] in, int off) Decodes the first 8 bytes starting at off of the given array into a long value using big-endian byte ordering convention.
static byte[]	encode(int n) Encodes the given int value using big-endian byte ordering convention.
static void	encode(int n, byte[] out, int off) Encodes the given int value using big-endian byte ordering convention into the given array, starting at the given offset.
static byte[]	encode(long n) Encodes the given long value using big-endian byte ordering convention.
static void	encode(long n, byte[] out, int off) Encodes the given long value using big-endian byte ordering convention into the given array, starting at the given offset.

Methods inherited from class java.lang.Object

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

Method Detail

encode

public static byte[] encode(int n)

Encodes the given int value using big-endian byte ordering convention.

Parameters:

n - the int value to encode.

Returns:

the encoded value.

encode

public static void encode(int n,
          byte[] out,
          int off)

Encodes the given int value using big-endian byte ordering convention into the given array, starting at the given offset.

Parameters:

n - the int value to encode.

out - the output buffer.

off - the output offset.

Throws:

NullPointerException - if out is null.

IndexOutOfBoundsException - if off is negative or if out's length is lower than off + 4.

encode

public static byte[] encode(long n)

Encodes the given long value using big-endian byte ordering convention.

Parameters:

n - the long value to encode.

Returns:

the encoded value.

encode

public static void encode(long n,
          byte[] out,
          int off)

Encodes the given long value using big-endian byte ordering convention into the given array, starting at the given offset.

Parameters:

n - the long value to encode.

out - the output buffer.

off - the output offset.

Throws:

NullPointerException - if out is null.

IndexOutOfBoundsException - if off is negative or if out's length is lower than off + 8.

decodeInt

public static int decodeInt(byte[] in)

Decodes the first 4 bytes of the given array into an int value using big-endian byte ordering convention.

Parameters:

in - the encoded value.

Returns:

the decoded int value.

Throws:

NullPointerException - if in is null.

IndexOutOfBoundsException - if in's length is lower than 4.

decodeInt

public static int decodeInt(byte[] in,
            int off)

Decodes the first 4 bytes starting at off of the given array into an int value using big-endian byte ordering convention.

Parameters:

in - the encoded value.

off - the input offset.

Returns:

the decoded int value.

Throws:

NullPointerException - if in is null.

IndexOutOfBoundsException - if off is negative or if in's length is lower than off + 4.

decodeLong

public static long decodeLong(byte[] in)

Decodes the first 8 bytes of the given array into a long value using big-endian byte ordering convention.

Parameters:

in - the encoded value.

Returns:

the decoded long value.

Throws:

NullPointerException - if in is null.

IndexOutOfBoundsException - if in's length is lower than 8.

decodeLong

public static long decodeLong(byte[] in,
              int off)

Decodes the first 8 bytes starting at off of the given array into a long value using big-endian byte ordering convention.

Parameters:

in - the encoded value.

off - the input offset.

Returns:

the decoded long value.

Throws:

NullPointerException - if in is null.

IndexOutOfBoundsException - if off is negative or if in's length is lower than off + 8.