org.eclipse.jgit.util

Class Base85

java.lang.Object

org.eclipse.jgit.util.Base85

public final class Base85
extends Object

Base-85 encoder/decoder.

Since:

5.12

Method Summary

Modifier and Type	Method and Description
static byte[]	decode(byte[] encoded, int expectedSize) Decodes the Base-85 encoded data into a byte array of expectedSize bytes.
static byte[]	decode(byte[] encoded, int start, int length, int expectedSize) Decodes length bytes of Base-85 encoded data, beginning at the start index, into a byte array of expectedSize bytes.
static byte[]	encode(byte[] data) Encodes the given data in Base-85.
static byte[]	encode(byte[] data, int start, int length) Encodes length bytes of data in Base-85, beginning at the start index.
static int	encodedLength(int rawLength) Determines the length of the base-85 encoding for rawLength bytes.

Methods inherited from class java.lang.Object

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

Method Detail

encodedLength

public static int encodedLength(int rawLength)

Determines the length of the base-85 encoding for rawLength bytes.

Parameters:

rawLength - number of bytes to encode

Returns:

number of bytes needed for the base-85 encoding of rawLength bytes

encode

public static byte[] encode(byte[] data)

Encodes the given data in Base-85.

Parameters:

data - to encode

Returns:

encoded data

encode

public static byte[] encode(byte[] data,
                            int start,
                            int length)

Encodes length bytes of data in Base-85, beginning at the start index.

Parameters:

data - to encode

start - index of the first byte to encode

length - number of bytes to encode

Returns:

encoded data

decode

public static byte[] decode(byte[] encoded,
                            int expectedSize)

Decodes the Base-85 encoded data into a byte array of expectedSize bytes.

Parameters:

encoded - Base-85 encoded data

expectedSize - of the result

Returns:

the decoded bytes

Throws:

IllegalArgumentException - if expectedSize doesn't match, the encoded data has a length that is not a multiple of 5, or there are invalid characters in the encoded data

decode

public static byte[] decode(byte[] encoded,
                            int start,
                            int length,
                            int expectedSize)

Decodes length bytes of Base-85 encoded data, beginning at the start index, into a byte array of expectedSize bytes.

Parameters:

encoded - Base-85 encoded data

start - index at which the data to decode starts in encoded

length - of the Base-85 encoded data

expectedSize - of the result

Returns:

the decoded bytes

Throws:

IllegalArgumentException - if expectedSize doesn't match, length is not a multiple of 5, or there are invalid characters in the encoded data