Package io.netty.handler.codec.compression

Class Bzip2BitReader

java.lang.Object
io.netty.handler.codec.compression.Bzip2BitReader
class Bzip2BitReader extends Object
An bit reader that allows the reading of single bit booleans, bit strings of arbitrary length (up to 32 bits), and bit aligned 32-bit integers. A single byte at a time is read from the ByteBuf when more bits are required.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    private long
    bitBuffer
    A buffer of bits read from the input stream that have not yet been returned.
    private int
    bitCount
    The number of bits currently buffered in bitBuffer.
    private ByteBuf
    in
    The ByteBuf from which to read data.
    private static final int
    MAX_COUNT_OF_READABLE_BYTES
    Maximum count of possible readable bytes to check.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Bzip2BitReader()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    (package private) boolean
    hasReadableBits(int count)
    Checks that the specified number of bits available for reading.
    (package private) boolean
    hasReadableBytes(int count)
    Checks that the specified number of bytes available for reading.
    (package private) boolean
    isReadable()
    Checks that at least one bit is available for reading.
    (package private) int
    readBits(int count)
    Reads up to 32 bits from the ByteBuf.
    (package private) boolean
    readBoolean()
    Reads a single bit from the ByteBuf.
    (package private) int
    readInt()
    Reads 32 bits of input as an integer.
    (package private) void
    refill()
    Refill the ByteBuf by one byte.
    (package private) void
    setByteBuf(ByteBuf in)
    Set the ByteBuf from which to read data.

    Methods inherited from class java.lang.Object

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

  • Field Details

    • MAX_COUNT_OF_READABLE_BYTES

      private static final int MAX_COUNT_OF_READABLE_BYTES
      Maximum count of possible readable bytes to check.
      See Also:

    • in

      private ByteBuf in
      The ByteBuf from which to read data.

    • bitBuffer

      private long bitBuffer
      A buffer of bits read from the input stream that have not yet been returned.

    • bitCount

      private int bitCount
      The number of bits currently buffered in bitBuffer.

  • Constructor Details

    • Bzip2BitReader

      Bzip2BitReader()

  • Method Details

    • setByteBuf

      void setByteBuf(ByteBuf in)
      Set the ByteBuf from which to read data.

    • readBits

      int readBits(int count)
      Reads up to 32 bits from the ByteBuf.
      Parameters:
      count - The number of bits to read (maximum 32 as a size of int)
      Returns:
      The bits requested, right-aligned within the integer

    • readBoolean

      boolean readBoolean()
      Reads a single bit from the ByteBuf.
      Returns:
      true if the bit read was 1, otherwise false

    • readInt

      int readInt()
      Reads 32 bits of input as an integer.
      Returns:
      The integer read

    • refill

      void refill()
      Refill the ByteBuf by one byte.

    • isReadable

      boolean isReadable()
      Checks that at least one bit is available for reading.
      Returns:
      true if one bit is available for reading, otherwise false

    • hasReadableBits

      boolean hasReadableBits(int count)
      Checks that the specified number of bits available for reading.
      Parameters:
      count - The number of bits to check
      Returns:
      true if count bits are available for reading, otherwise false

    • hasReadableBytes

      boolean hasReadableBytes(int count)
      Checks that the specified number of bytes available for reading.
      Parameters:
      count - The number of bytes to check
      Returns:
      true if count bytes are available for reading, otherwise false