Class Base64

java.lang.Object

io.netty.handler.codec.base64.Base64

public final class Base64
extends Object

Utility class for ByteBuf that encodes and decodes to and from Base64 notation.

The encoding and decoding algorithm in this class has been derived from Robert Harder's Public Domain Base64 Encoder/Decoder.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static final class	Base64.Decoder

Field Summary

Fields

Modifier and Type	Field	Description
private static final byte	EQUALS_SIGN	The equals sign (=) as a byte.
private static final byte	EQUALS_SIGN_ENC
private static final int	MAX_LINE_LENGTH	Maximum line length (76) of Base64 output.
private static final byte	NEW_LINE	The new line character (\n) as a byte.
private static final byte	WHITE_SPACE_ENC

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Base64()

Method Summary

Modifier and Type	Method	Description
private static byte[]	alphabet(Base64Dialect dialect)
private static boolean	breakLines(Base64Dialect dialect)
private static byte[]	decodabet(Base64Dialect dialect)
static ByteBuf	decode(ByteBuf src)
static ByteBuf	decode(ByteBuf src, int off, int len)
static ByteBuf	decode(ByteBuf src, int off, int len, Base64Dialect dialect)
static ByteBuf	decode(ByteBuf src, int off, int len, Base64Dialect dialect, ByteBufAllocator allocator)
static ByteBuf	decode(ByteBuf src, Base64Dialect dialect)
(package private) static int	decodedBufferSize(int len)
static ByteBuf	encode(ByteBuf src)
static ByteBuf	encode(ByteBuf src, boolean breakLines)
static ByteBuf	encode(ByteBuf src, boolean breakLines, Base64Dialect dialect)
static ByteBuf	encode(ByteBuf src, int off, int len)
static ByteBuf	encode(ByteBuf src, int off, int len, boolean breakLines)
static ByteBuf	encode(ByteBuf src, int off, int len, boolean breakLines, Base64Dialect dialect)
static ByteBuf	encode(ByteBuf src, int off, int len, boolean breakLines, Base64Dialect dialect, ByteBufAllocator allocator)
static ByteBuf	encode(ByteBuf src, int off, int len, Base64Dialect dialect)
static ByteBuf	encode(ByteBuf src, Base64Dialect dialect)
private static void	encode3to4(ByteBuf src, int srcOffset, int numSigBytes, ByteBuf dest, int destOffset, byte[] alphabet)
private static void	encode3to4BigEndian(int inBuff, int numSigBytes, ByteBuf dest, int destOffset, byte[] alphabet)
private static void	encode3to4LittleEndian(int inBuff, int numSigBytes, ByteBuf dest, int destOffset, byte[] alphabet)
(package private) static int	encodedBufferSize(int len, boolean breakLines)
private static int	toInt(byte value)
private static int	toIntBE(int mediumValue)
private static int	toIntBE(short value)
private static int	toIntLE(int mediumValue)
private static int	toIntLE(short value)

Methods inherited from class Object

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

Field Details

MAX_LINE_LENGTH

private static final int MAX_LINE_LENGTH

Maximum line length (76) of Base64 output.

See Also:

• Constant Field Values

EQUALS_SIGN

private static final byte EQUALS_SIGN

The equals sign (=) as a byte.

See Also:

• Constant Field Values

NEW_LINE

private static final byte NEW_LINE

The new line character (\n) as a byte.

See Also:

• Constant Field Values

WHITE_SPACE_ENC

private static final byte WHITE_SPACE_ENC

See Also:

• Constant Field Values

EQUALS_SIGN_ENC

private static final byte EQUALS_SIGN_ENC

See Also:

• Constant Field Values

Constructor Details

Base64

private Base64()

Method Details

alphabet

private static byte[] alphabet(Base64Dialect dialect)

decodabet

private static byte[] decodabet(Base64Dialect dialect)

breakLines

private static boolean breakLines(Base64Dialect dialect)

encode

public static ByteBuf encode(ByteBuf src)

encode

public static ByteBuf encode(ByteBuf src,
 Base64Dialect dialect)

encode

public static ByteBuf encode(ByteBuf src,
 boolean breakLines)

encode

public static ByteBuf encode(ByteBuf src,
 boolean breakLines,
 Base64Dialect dialect)

encode

public static ByteBuf encode(ByteBuf src,
 int off,
 int len)

encode

public static ByteBuf encode(ByteBuf src,
 int off,
 int len,
 Base64Dialect dialect)

encode

public static ByteBuf encode(ByteBuf src,
 int off,
 int len,
 boolean breakLines)

encode

public static ByteBuf encode(ByteBuf src,
 int off,
 int len,
 boolean breakLines,
 Base64Dialect dialect)

encode

public static ByteBuf encode(ByteBuf src,
 int off,
 int len,
 boolean breakLines,
 Base64Dialect dialect,
 ByteBufAllocator allocator)

encode3to4

private static void encode3to4(ByteBuf src,
 int srcOffset,
 int numSigBytes,
 ByteBuf dest,
 int destOffset,
 byte[] alphabet)

encodedBufferSize

static int encodedBufferSize(int len,
 boolean breakLines)

toInt

private static int toInt(byte value)

toIntBE

private static int toIntBE(short value)

toIntLE

private static int toIntLE(short value)

toIntBE

private static int toIntBE(int mediumValue)

toIntLE

private static int toIntLE(int mediumValue)

encode3to4BigEndian

private static void encode3to4BigEndian(int inBuff,
 int numSigBytes,
 ByteBuf dest,
 int destOffset,
 byte[] alphabet)

encode3to4LittleEndian

private static void encode3to4LittleEndian(int inBuff,
 int numSigBytes,
 ByteBuf dest,
 int destOffset,
 byte[] alphabet)

decode

public static ByteBuf decode(ByteBuf src)

decode

public static ByteBuf decode(ByteBuf src,
 Base64Dialect dialect)

decode

public static ByteBuf decode(ByteBuf src,
 int off,
 int len)

decode

public static ByteBuf decode(ByteBuf src,
 int off,
 int len,
 Base64Dialect dialect)

decode

public static ByteBuf decode(ByteBuf src,
 int off,
 int len,
 Base64Dialect dialect,
 ByteBufAllocator allocator)

decodedBufferSize

static int decodedBufferSize(int len)