org.cryptacular.codec

Class Base64Decoder

java.lang.Object

org.cryptacular.codec.AbstractBaseNDecoder

org.cryptacular.codec.Base64Decoder

All Implemented Interfaces:

Decoder

public class Base64Decoder
extends AbstractBaseNDecoder

Stateful base 64 decoder with support for line breaks.

Field Summary

Fields

Modifier and Type	Field and Description
private static byte[]	DEFAULT_DECODING_TABLE Default base-64 character decoding table.
private static byte[]	URLSAFE_DECODING_TABLE URL and filesystem-safe base-64 character decoding table.

Constructor Summary

Constructors

Constructor and Description
Base64Decoder() Creates a new instance that decodes base 64-encoded input in the default character set.
Base64Decoder(boolean urlSafe) Creates a new instance that decodes base 64-encoded input in the optional URL-safe character set.

Method Summary

Modifier and Type	Method and Description
protected int	getBitsPerChar()
protected int	getBlockLength()

Methods inherited from class org.cryptacular.codec.AbstractBaseNDecoder

decode, finalize, outputSize

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_DECODING_TABLE

private static final byte[] DEFAULT_DECODING_TABLE

Default base-64 character decoding table.

URLSAFE_DECODING_TABLE

private static final byte[] URLSAFE_DECODING_TABLE

URL and filesystem-safe base-64 character decoding table.

Constructor Detail

Base64Decoder

public Base64Decoder()

Creates a new instance that decodes base 64-encoded input in the default character set.

Base64Decoder

public Base64Decoder(boolean urlSafe)

Creates a new instance that decodes base 64-encoded input in the optional URL-safe character set.

Parameters:

urlSafe - True to use URL and filesystem-safe character set, false otherwise.

Method Detail

getBlockLength

protected int getBlockLength()

Specified by:

getBlockLength in class AbstractBaseNDecoder

Returns:

Number of bits in a block of encoded characters.

getBitsPerChar

protected int getBitsPerChar()

Specified by:

getBitsPerChar in class AbstractBaseNDecoder

Returns:

Number of bits encoding a single character.