Class HpackHuffmanDecoder

java.lang.Object

io.netty.handler.codec.http2.HpackHuffmanDecoder

All Implemented Interfaces:

ByteProcessor

final class HpackHuffmanDecoder
extends java.lang.Object
implements ByteProcessor

Nested Class Summary

Nested classes/interfaces inherited from interface ByteProcessor

ByteProcessor.IndexNotOfProcessor, ByteProcessor.IndexOfProcessor

Field Summary

Fields

Modifier and Type	Field	Description
private static final Http2Exception	BAD_ENCODING
private byte[]	dest
private static final byte	HUFFMAN_COMPLETE
private static final int	HUFFMAN_COMPLETE_SHIFT
private static final byte	HUFFMAN_EMIT_SYMBOL
private static final int	HUFFMAN_EMIT_SYMBOL_SHIFT
private static final byte	HUFFMAN_FAIL
private static final int	HUFFMAN_FAIL_SHIFT
private static final int[]	HUFFS	A table of byte tuples (state, flags, output).
private int	k
private int	state

Fields inherited from interface ByteProcessor

FIND_ASCII_SPACE, FIND_COMMA, FIND_CR, FIND_CRLF, FIND_LF, FIND_LINEAR_WHITESPACE, FIND_NON_CR, FIND_NON_CRLF, FIND_NON_LF, FIND_NON_LINEAR_WHITESPACE, FIND_NON_NUL, FIND_NUL, FIND_SEMI_COLON

Constructor Summary

Constructors

Constructor	Description
HpackHuffmanDecoder()

Method Summary

Modifier and Type	Method	Description
AsciiString	decode(ByteBuf buf, int length)	Decompresses the given Huffman coded string literal.
boolean	process(byte input)	This should never be called from anything but this class itself!
private boolean	processNibble(int input)

Methods inherited from class java.lang.Object

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

Field Details

HUFFMAN_COMPLETE

private static final byte HUFFMAN_COMPLETE

See Also:

• Constant Field Values

HUFFMAN_EMIT_SYMBOL

private static final byte HUFFMAN_EMIT_SYMBOL

See Also:

• Constant Field Values

HUFFMAN_FAIL

private static final byte HUFFMAN_FAIL

See Also:

• Constant Field Values

HUFFMAN_COMPLETE_SHIFT

private static final int HUFFMAN_COMPLETE_SHIFT

See Also:

• Constant Field Values

HUFFMAN_EMIT_SYMBOL_SHIFT

private static final int HUFFMAN_EMIT_SYMBOL_SHIFT

See Also:

• Constant Field Values

HUFFMAN_FAIL_SHIFT

private static final int HUFFMAN_FAIL_SHIFT

See Also:

• Constant Field Values

HUFFS

private static final int[] HUFFS

A table of byte tuples (state, flags, output). They are packed together as:

stateinvalid input: '<'invalid input: '<'16 + flagsinvalid input: '<'invalid input: '<'8 + output

BAD_ENCODING

private static final Http2Exception BAD_ENCODING

dest

private byte[] dest

k

private int k

state

private int state

Constructor Details

HpackHuffmanDecoder

HpackHuffmanDecoder()

Method Details

decode

public AsciiString decode(ByteBuf buf,
 int length)
                   throws Http2Exception

Decompresses the given Huffman coded string literal.

Parameters:

buf - the string literal to be decoded

Returns:

the output stream for the compressed data

Throws:

Http2Exception - EOS Decoded

process

public boolean process(byte input)

This should never be called from anything but this class itself!

Specified by:

process in interface ByteProcessor

Returns:

true if the processor wants to continue the loop and handle the next byte in the buffer. false if the processor wants to stop handling bytes and abort the loop.

processNibble

private boolean processNibble(int input)