Module org.cryptomator.frontend.dokany

Package org.cryptomator.frontend.dokany.adapter

Class OpenRestrictedFile

java.lang.Object

org.cryptomator.frontend.dokany.adapter.OpenHandle

org.cryptomator.frontend.dokany.adapter.OpenFile

org.cryptomator.frontend.dokany.adapter.OpenRestrictedFile

All Implemented Interfaces:

Closeable, AutoCloseable

public class OpenRestrictedFile
extends OpenFile

A File where no FileChannel to the data is opened. Should be useed, if the file is e.g. invalid but should be deleteable.

Field Summary

Fields inherited from class org.cryptomator.frontend.dokany.adapter.OpenHandle

path

Constructor Summary

Constructors

Constructor	Description
OpenRestrictedFile(Path path)

Method Summary

Modifier and Type	Method	Description
boolean	canBeDeleted()	Test if we can delete this file.
void	close()
void	flush()
static OpenRestrictedFile	open(Path path)
int	read(com.sun.jna.Pointer buf, int num, long offset)	Reads up to num bytes beginning at offset into buf
void	truncate(long size)
int	write(com.sun.jna.Pointer buf, int num, long offset)	Writes up to num bytes from buf into the current file beginning at offset

Methods inherited from class org.cryptomator.frontend.dokany.adapter.OpenFile

append, open, toString

Methods inherited from class java.lang.Object

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

Constructor Details

OpenRestrictedFile

public OpenRestrictedFile(Path path)

Method Details

read

public int read(com.sun.jna.Pointer buf,
 int num,
 long offset)
         throws IOException

Description copied from class: OpenFile

Reads up to num bytes beginning at offset into buf

Overrides:

read in class OpenFile

Parameters:

buf - Buffer

num - Number of bytes to read

offset - Position of first byte to read

Returns:

Actual number of bytes read (can be less than num if reached EOF).

Throws:

IOException - If an exception occurs during read.

write

public int write(com.sun.jna.Pointer buf,
 int num,
 long offset)
          throws IOException

Description copied from class: OpenFile

Writes up to num bytes from buf into the current file beginning at offset

Overrides:

write in class OpenFile

Parameters:

buf - Buffer

num - Number of bytes to write

offset - Position of first byte to write at

Returns:

Actual number of bytes written TODO: only the bytes which contains information or also some filling zeros?

Throws:

IOException - If an exception occurs during write.

flush

public void flush()
           throws IOException

Overrides:

flush in class OpenFile

Throws:

IOException

truncate

public void truncate(long size)
              throws IOException

Overrides:

truncate in class OpenFile

Throws:

IOException

canBeDeleted

public boolean canBeDeleted()

Description copied from class: OpenFile

Test if we can delete this file.

Overrides:

canBeDeleted in class OpenFile

Returns:

true if no concurrent routine holds a lock on this file or the file is opened as read-only

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class OpenFile

Throws:

IOException

open

public static OpenRestrictedFile open(Path path)