calypso.util
Class RandomAccessFileWithByteLines

java.lang.Object
  |
  +--calypso.util.RandomAccessFileWithByteLines

public class RandomAccessFileWithByteLines

extends java.lang.Object

Field Summary

protected byte[]	fBuffer
protected int	fEnd
protected java.io.RandomAccessFile	fInput
protected int	fOffset

Constructor Summary

RandomAccessFileWithByteLines(java.io.RandomAccessFile f)

Method Summary

boolean	eatNewline() Eat up one newline if present in the fBuffer.
protected boolean	fill()
protected boolean	fillForCapacity(int capacity) Fill the fBuffer, keeping whatever is unread in the fBuffer and ensuring that "capacity" characters of total filled fBuffer space is available.
long	getFilePointer()
void	readFully(byte[] arr, int off, int length)
boolean	readLine(ByteBuf buf)
void	seek(long loc)

Methods inherited from class java.lang.Object

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

Field Detail

fInput

protected java.io.RandomAccessFile fInput

fBuffer

protected byte[] fBuffer

fOffset

protected int fOffset

fEnd

protected int fEnd

Constructor Detail

RandomAccessFileWithByteLines

public RandomAccessFileWithByteLines(java.io.RandomAccessFile f)

Method Detail

readLine

public boolean readLine(ByteBuf buf)
                 throws java.io.IOException

eatNewline

public boolean eatNewline()
                   throws java.io.IOException

Eat up one newline if present in the fBuffer. If a newline was eaten up return true otherwise false. This will handle mac (\r), unix (\n) and windows (\r\n) style of newlines transparently.

getFilePointer

public long getFilePointer()
                    throws java.io.IOException

seek

public void seek(long loc)
          throws java.io.IOException

fill

protected boolean fill()
                throws java.io.IOException

fillForCapacity

protected boolean fillForCapacity(int capacity)
                           throws java.io.IOException

Fill the fBuffer, keeping whatever is unread in the fBuffer and ensuring that "capacity" characters of total filled fBuffer space is available. Return false if the final amount of data in the fBuffer is less than capacity, otherwise return true.

readFully

public void readFully(byte[] arr,
                      int off,
                      int length)
               throws java.io.IOException