Module org.cryptomator.frontend.dokany

Package org.cryptomator.frontend.dokany.adapter

Class OpenFile

java.lang.Object

org.cryptomator.frontend.dokany.adapter.OpenHandle

org.cryptomator.frontend.dokany.adapter.OpenFile

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

OpenRestrictedFile

public class OpenFile
extends OpenHandle

Field Summary

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

path

Constructor Summary

Constructors

Constructor	Description
OpenFile(Path path, FileChannel channel)

Method Summary

Modifier and Type	Method	Description
int	append(com.sun.jna.Pointer buf, int num)
boolean	canBeDeleted()	Test if we can delete this file.
void	close()
void	flush()
static OpenFile	open(Path path, Set<? extends OpenOption> options, FileAttribute<?>... attrs)
int	read(com.sun.jna.Pointer buf, int num, long offset)	Reads up to num bytes beginning at offset into buf
String	toString()
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 java.lang.Object

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

Constructor Details

OpenFile

public OpenFile(Path path,
 FileChannel channel)

Method Details

read

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

Reads up to num bytes beginning at offset into buf

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

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

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.

append

public int append(com.sun.jna.Pointer buf,
 int num)
           throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class OpenHandle

Throws:

IOException

flush

public void flush()
           throws IOException

Throws:

IOException

truncate

public void truncate(long size)
              throws IOException

Throws:

IOException

canBeDeleted

public boolean canBeDeleted()

Test if we can delete this file.

Returns:

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

toString

public String toString()

Overrides:

toString in class Object

open

public static OpenFile open(Path path,
 Set<? extends OpenOption> options,
 FileAttribute<?>... attrs)
                     throws IOException

Throws:

IOException