Package com.pnfsoftware.jeb.util.io

Class ChannelHelper

java.lang.Object
com.pnfsoftware.jeb.util.io.ChannelHelper
public class ChannelHelper extends Object
Helper for SeekableByteChannels.

The provided channel is neither closed nor position-verified. Methods of this class are not thread-safe.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ChannelHelper(SeekableByteChannel channel, Endianness endianness)
    Create a primitive reader helper for a seekable byte channel.

  • Method Summary

    Modifier and Type
    Method
    Description
    byte
    get()
    Read one byte at the current channel position.
    byte
    get(long channelPosition)
    Read one byte at an absolute channel position.
    int
    getInt()
    Read a 32-bit integer at the current channel position.
    int
    getInt(long channelPosition)
    Read a 32-bit integer at an absolute channel position.
    long
    getLong()
    Read a 64-bit integer at the current channel position.
    long
    getLong(long channelPosition)
    Read a 64-bit integer at an absolute channel position.
    short
    getShort()
    Read a 16-bit integer at the current channel position.
    short
    getShort(long channelPosition)
    Read a 16-bit integer at an absolute channel position.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • ChannelHelper

      public ChannelHelper(SeekableByteChannel channel, Endianness endianness)
      Create a primitive reader helper for a seekable byte channel.
      Parameters:
      channel - input channel
      endianness - byte order to use when reading multi-byte values

  • Method Details

    • get

      public byte get() throws IOException
      Read one byte at the current channel position.
      Returns:
      byte value
      Throws:
      IOException - if the byte cannot be read

    • get

      public byte get(long channelPosition) throws IOException
      Read one byte at an absolute channel position.
      Parameters:
      channelPosition - absolute channel position
      Returns:
      byte value
      Throws:
      IOException - if the byte cannot be read

    • getShort

      public short getShort() throws IOException
      Read a 16-bit integer at the current channel position.
      Returns:
      decoded value
      Throws:
      IOException - if the value cannot be read

    • getShort

      public short getShort(long channelPosition) throws IOException
      Read a 16-bit integer at an absolute channel position.
      Parameters:
      channelPosition - absolute channel position
      Returns:
      decoded value
      Throws:
      IOException - if the value cannot be read

    • getInt

      public int getInt() throws IOException
      Read a 32-bit integer at the current channel position.
      Returns:
      decoded value
      Throws:
      IOException - if the value cannot be read

    • getInt

      public int getInt(long channelPosition) throws IOException
      Read a 32-bit integer at an absolute channel position.
      Parameters:
      channelPosition - absolute channel position
      Returns:
      decoded value
      Throws:
      IOException - if the value cannot be read

    • getLong

      public long getLong() throws IOException
      Read a 64-bit integer at the current channel position.
      Returns:
      decoded value
      Throws:
      IOException - if the value cannot be read

    • getLong

      public long getLong(long channelPosition) throws IOException
      Read a 64-bit integer at an absolute channel position.
      Parameters:
      channelPosition - absolute channel position
      Returns:
      decoded value
      Throws:
      IOException - if the value cannot be read