Class FileUtils

java.lang.Object

utils.FileUtils

public class FileUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
FileUtils()

Method Summary

Modifier and Type	Method	Description
static double	bytesToGiB(long bytes)	Converts bytes to GiBs
static String	getFileHash(org.bouncycastle.crypto.digests.SHA256Digest digest, byte[] buffer, byte[] bytes)	Returns the hash of the bytes passed to it
static String	getRecursiveHash(File root)	Unpacks a file tree into a list, calculates the files, adds them together and returns it
static long	getUsedSpace(File file)	Gets the amount of used spaces by a file and its sub-files (recursively) in bytes

Methods inherited from class Object

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

Constructor Details

FileUtils

public FileUtils()

Method Details

bytesToGiB

public static double bytesToGiB(long bytes)

Converts bytes to GiBs

Parameters:

bytes - the bytes to convert

Returns:

The value converted to GiB

getUsedSpace

public static long getUsedSpace(File file)

Gets the amount of used spaces by a file and its sub-files (recursively) in bytes

Parameters:

file - The parent file to use

Returns:

The used space in bytes

getRecursiveHash

public static String getRecursiveHash(File root)
                               throws IOException

Unpacks a file tree into a list, calculates the files, adds them together and returns it

Parameters:

root - The root of the file tree to use

Returns:

The aggregated hash of the file tree

Throws:

IOException - if an error with reading the file occurs

getFileHash

public static String getFileHash(org.bouncycastle.crypto.digests.SHA256Digest digest,
 byte[] buffer,
 byte[] bytes)

Returns the hash of the bytes passed to it

Parameters:

digest - The digest to use

buffer - The buffer for the hash

bytes - The data that is hashed

Returns:

The hash as a hex string