de.schlichtherle.io
Class CountingReadOnlyFile

java.lang.Object
  de.schlichtherle.io.rof.AbstractReadOnlyFile
      de.schlichtherle.io.rof.FilterReadOnlyFile
          de.schlichtherle.io.CountingReadOnlyFile

All Implemented Interfaces:

ReadOnlyFile

final class CountingReadOnlyFile
extends FilterReadOnlyFile

Since:

TrueZIP 6.5

Version:

$Id: CountingReadOnlyFile.java 06f3ba684701 2010/11/04 01:15:55 christian $

Author:

Christian Schlichtherle

Field Summary

private static boolean	reset
private static long	total

Fields inherited from class de.schlichtherle.io.rof.FilterReadOnlyFile

rof

Constructor Summary

CountingReadOnlyFile(ReadOnlyFile rof)

Method Summary

(package private) static long	getTotal() Returns the total number of bytes read.
(package private) static void	init() Resets the total number of bytes read if resetOnInit() has been called before.
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len) Reads up to len bytes of data from this read only file into the given array.
(package private) static void	resetOnInit() Requests that the total number of bytes read gets reset on the next call to init().
int	skipBytes(int n) Deprecated.

Methods inherited from class de.schlichtherle.io.rof.FilterReadOnlyFile

close, getFilePointer, length, seek

Methods inherited from class de.schlichtherle.io.rof.AbstractReadOnlyFile

readFully, readFully

Methods inherited from class java.lang.Object

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

Field Detail

total

private static volatile long total

reset

private static volatile boolean reset

Constructor Detail

CountingReadOnlyFile

CountingReadOnlyFile(ReadOnlyFile rof)

Method Detail

getTotal

static long getTotal()

Returns the total number of bytes read.

init

static void init()

Resets the total number of bytes read if resetOnInit() has been called before.

resetOnInit

static void resetOnInit()

Requests that the total number of bytes read gets reset on the next call to init().

read

public int read()
         throws IOException

Specified by:

read in interface ReadOnlyFile

Overrides:

read in class FilterReadOnlyFile

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Specified by:

read in interface ReadOnlyFile

Overrides:

read in class AbstractReadOnlyFile

Throws:

IOException

read

public int read(byte[] b,
                int off,
                int len)
         throws IOException

Description copied from interface: ReadOnlyFile

Reads up to len bytes of data from this read only file into the given array. This method blocks until at least one byte of input is available.

Specified by:

read in interface ReadOnlyFile

Overrides:

read in class FilterReadOnlyFile

Parameters:

b - The buffer to fill with data.

off - The start offset of the data.

len - The maximum number of bytes to read.

Returns:

The total number of bytes read, or -1 if there is no more data because the end of the file has been reached.

Throws:

IOException - On any I/O related issue.

skipBytes

public int skipBytes(int n)
              throws IOException

Deprecated.

Specified by:

skipBytes in interface ReadOnlyFile

Overrides:

skipBytes in class AbstractReadOnlyFile

Throws:

IOException