Class Base32.Decoder

java.lang.Object

org.tquadrat.foundation.util.Base32.Decoder

Enclosing class:

Base32

@ClassVersion(sourceVersion="$Id: Base32.java 1151 2025-10-01 21:32:15Z tquadrat $")
@API(status=STABLE,
     since="0.1.0")
public static final class Base32.Decoder
extends Object

The Decoder for Crockford's Base 32 format.

Author:

Thomas Thrien (thomas.thrien@tquadrat.org)

Thanks to:

Douglas Crockford (douglas@crockford.com)

Version:

$Id: Base32.java 1151 2025-10-01 21:32:15Z tquadrat $

Since:

0.1.0

UML Diagram

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UML Diagram for "org.tquadrat.foundation.util.Base32.Decoder"

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Constructor Summary

Constructors

Modifier	Constructor	Description
private	Decoder()	Creates a new instance of Base32.Decoder.

Method Summary

Modifier and Type	Method	Description
private final long[]	checkValid(byte[] src)	Checks whether the given argument is a valid Basic 32 sequence and converts it into an array with the symbol values.
final byte[]	decode(byte[] src)	Decodes an array of Base 32 symbols.
final byte[]	decode(String src)	Decodes a Base 32 string.
final BigInteger	decodeToNumber(byte[] src)	Decodes an array of Base 32 symbols to a number.
final BigInteger	decodeToNumber(String src)	Decodes a Base string to a number.
final String	decodeToString(byte[] src)	Decodes an array of Base 32 symbols to a String.
final String	decodeToString(String src)	Decodes a Base string to a String.

Methods inherited from class Object

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

Constructor Details

Decoder

private Decoder()

Creates a new instance of Base32.Decoder.

Method Details

checkValid

private final long[] checkValid(byte[] src)

Checks whether the given argument is a valid Basic 32 sequence and converts it into an array with the symbol values.

Parameters:

src - The data to check.

Returns:

The symbol values.

Throws:

IllegalArgumentException - The input data is invalid.

decode

public final byte[] decode(byte[] src)
                    throws ValidationException

Decodes an array of Base 32 symbols.

This is the converse operation to Base32.Encoder.encode(byte[])

Parameters:

src - The input data.

Returns:

The decoded value.

Throws:

ValidationException - The input data is not a valid Base 32 sequence

decode

public final byte[] decode(String src)
                    throws ValidationException

Decodes a Base 32 string.

This is the converse operation to Base32.Encoder.encodeToString(byte[]).

Parameters:

src - The input data.

Returns:

The decoded value.

Throws:

ValidationException - The input data is not a valid Base 32 sequence

decodeToNumber

public final BigInteger decodeToNumber(byte[] src)
                                throws ValidationException

Decodes an array of Base 32 symbols to a number.

Parameters:

src - The input data.

Returns:

The decoded value.

Throws:

ValidationException - The input data is not a valid Base 32 sequence

decodeToNumber

public final BigInteger decodeToNumber(String src)
                                throws ValidationException

Decodes a Base string to a number.

This is the converse operation to Base32.Encoder.encodeToString(BigInteger).

Parameters:

src - The input data.

Returns:

The decoded value.

Throws:

ValidationException - The input data is not a valid Base 32 sequence

decodeToString

public final String decodeToString(byte[] src)
                            throws ValidationException

Decodes an array of Base 32 symbols to a String.

This is the converse operation to Base32.Encoder.encode(String).

Parameters:

src - The input data.

Returns:

The decoded value.

Throws:

ValidationException - The input data is not a valid Base 32 sequence

decodeToString

public final String decodeToString(String src)
                            throws ValidationException

Decodes a Base string to a String.

This is the converse operation to Base32.Encoder.encodeToString(String).

Parameters:

src - The input data.

Returns:

The decoded value.

Throws:

ValidationException - The input data is not a valid Base 32 sequence