org.abstracthorizon.mercury.common.io
Class AdvancedFileReader

java.lang.Object
  java.io.Reader
      org.abstracthorizon.mercury.common.io.AdvancedFileReader

All Implemented Interfaces:

Closeable, Readable

public class AdvancedFileReader
extends Reader

File reader that can uses random access file.

Author:

Daniel Sendula

Field Summary

protected RandomAccessFile	file Random access file
protected long	mark Mark
protected long	size Size

Fields inherited from class java.io.Reader

lock

Constructor Summary

AdvancedFileReader(File file, long from, long size)
Constructor

Method Summary

void	close()
void	mark() Marks position in a file
boolean	markSupported()
int	read(char[] cbuf, int off, int len)
boolean	ready()
void	reset()
long	skip(long n)

Methods inherited from class java.io.Reader

mark, read, read, read

Methods inherited from class java.lang.Object

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

Field Detail

size

protected long size

Size

mark

protected long mark

Mark

file

protected RandomAccessFile file

Random access file

Constructor Detail

AdvancedFileReader

public AdvancedFileReader(File file,
                          long from,
                          long size)
                   throws IOException

Constructor

Parameters:

file - file

from - starting offset

size - size

Throws:

IOException

Method Detail

read

public int read(char[] cbuf,
                int off,
                int len)
         throws IOException

Specified by:

read in class Reader

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in class Reader

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class Reader

mark

public void mark()
          throws IOException

Marks position in a file

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class Reader

Throws:

IOException

ready

public boolean ready()

Overrides:

ready in class Reader

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class Reader

Throws:

IOException