org.apache.commons.io.input
Class ReversedLinesFileReader.FilePart

java.lang.Object
  org.apache.commons.io.input.ReversedLinesFileReader.FilePart

Enclosing class:

ReversedLinesFileReader

private class ReversedLinesFileReader.FilePart
extends java.lang.Object

Field Summary

private int	currentLastBytePos
private byte[]	data
private byte[]	leftOver
private long	no

Constructor Summary

private

ReversedLinesFileReader.FilePart(long no, int length, byte[] leftOverOfLastFilePart) ctor

Method Summary

private void	createLeftOver() Creates the buffer containing any left over bytes.
private int	getNewLineMatchByteCount(byte[] data, int i) Finds the new-line sequence and return its length.
private java.lang.String	readLine() Reads a line.
private ReversedLinesFileReader.FilePart	rollOver() Handles block rollover

Methods inherited from class java.lang.Object

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

Field Detail

no

private final long no

data

private final byte[] data

leftOver

private byte[] leftOver

currentLastBytePos

private int currentLastBytePos

Constructor Detail

ReversedLinesFileReader.FilePart

private ReversedLinesFileReader.FilePart(long no,
                                         int length,
                                         byte[] leftOverOfLastFilePart)
                                  throws java.io.IOException

ctor

Parameters:

no - the part number

length - its length

leftOverOfLastFilePart - remainder

Throws:

java.io.IOException - if there is a problem reading the file

Method Detail

rollOver

private ReversedLinesFileReader.FilePart rollOver()
                                           throws java.io.IOException

Handles block rollover

Returns:

the new FilePart or null

Throws:

java.io.IOException - if there was a problem reading the file

readLine

private java.lang.String readLine()
                           throws java.io.IOException

Reads a line.

Returns:

the line or null

Throws:

java.io.IOException - if there is an error reading from the file

createLeftOver

private void createLeftOver()

Creates the buffer containing any left over bytes.

getNewLineMatchByteCount

private int getNewLineMatchByteCount(byte[] data,
                                     int i)

Finds the new-line sequence and return its length.

Parameters:

data - buffer to scan

i - start offset in buffer

Returns:

length of newline sequence or 0 if none found