com.phoenix_int.util
Class BufferedRandomAccessFile

java.lang.Object
  com.phoenix_int.util.BufferedRandomAccessFile

public class BufferedRandomAccessFile
extends java.lang.Object

Replacement for RandomAccessFile to use buffered I/O as much as possible. Mostly identical to java.io.RandomAccessFile API, or at least as close enough for what I needed. Note: This class is not threadsafe.

See Also:

RandomAccessFile

Field Summary

protected long	_actualPos
protected byte[]	_buffer
protected long	_bufStart
protected long	_fileLen
protected long	_filePos
protected int	_readOffset
protected java.io.RandomAccessFile	_wrapped
protected int	_writeOffset

Constructor Summary

BufferedRandomAccessFile(java.io.File file, java.lang.String mode, int bufSize)
Constructs a BufferedRandomAccessFile

Method Summary

boolean	_readBuf()
void	close()
void	flush()
long	length()
int	read()
int	read(byte[] buf)
int	read(byte[] buf, int offset, int len)
void	seek(long position)
void	write(byte[] buf)
void	write(byte[] buf, int offset, int len)

Methods inherited from class java.lang.Object

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

Field Detail

_wrapped

protected java.io.RandomAccessFile _wrapped

_filePos

protected long _filePos

_fileLen

protected long _fileLen

_actualPos

protected long _actualPos

_bufStart

protected long _bufStart

_buffer

protected byte[] _buffer

_writeOffset

protected int _writeOffset

_readOffset

protected int _readOffset

Constructor Detail

BufferedRandomAccessFile

public BufferedRandomAccessFile(java.io.File file,
                                java.lang.String mode,
                                int bufSize)
                         throws java.io.IOException

Constructs a BufferedRandomAccessFile

Parameters:

file - - The file to open

mode - - Same as for RandomAccessFile's constructor

bufSize - - How big to make the in-memory cache.

Throws:

java.io.IOException

Method Detail

length

public long length()
            throws java.io.IOException

Throws:

java.io.IOException

seek

public void seek(long position)

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException

write

public void write(byte[] buf)
           throws java.io.IOException

Throws:

java.io.IOException

write

public void write(byte[] buf,
                  int offset,
                  int len)
           throws java.io.IOException

Throws:

java.io.IOException

flush

public void flush()
           throws java.io.IOException

Throws:

java.io.IOException

read

public int read()
         throws java.io.IOException

Throws:

java.io.IOException

read

public int read(byte[] buf)
         throws java.io.IOException

Throws:

java.io.IOException

read

public int read(byte[] buf,
                int offset,
                int len)
         throws java.io.IOException

Throws:

java.io.IOException

_readBuf

public boolean _readBuf()
                 throws java.io.IOException

Throws:

java.io.IOException