FileUtils#

public class FileUtils#

Fields#

chownScript#

public static String chownScript#

Methods#

createFolders#

public static Undoable createFolders(File folder)#

delete#

public static Undoable delete(File file)#

delete#

public static Undoable delete(File file, boolean recursive)#

Delete a file undoable. If file is a directory and ‘recursive’ is true the directory and all of its sub folders are deleted. If file is a directory and ‘recursive’ is false file is deleted unless it has sub folders. If file is an actual file (and not a directory) the file is deleted. Otherwise, nothing happens.

Parameters:

  • file

  • recursive

Throws:

getChecksum#

public static String getChecksum(File file)#

Get the HEXed SHA-512 checksum of a file or a folder. The Checksum C of a folder f is calculated by (recursively): C(f) = C(C(f_name) + C(f_subfile_1) + … + C(f_subfile_N)) while f_name is the (String) name of f and f_subfile_1 to f_subfile_N are the alphabetically ordered subfiles and subfolders of f. The alphabetical order is defined by UTF16.

Parameters:

  • file

Returns:

SHA-512 Checksum

getMimeType#

public static String getMimeType(File file)#

Guess the MIME type of a file. This is based on the unix program ‘file –mime-type’ and might not work on other systems.

Parameters:

  • file

getSize#

public static Long getSize(File file)#

Get the size of a file or folder.

Parameters:

  • file

isSubDirSymlinkSave#

public static boolean isSubDirSymlinkSave(File file, File root)#

Return true iff file is not a simlink to a directory and root is not a simlink.

Symlinks are not allowed for the root. Symlinks are allowed only for a File object if it is a file symlink, not a directory symlink.

Parameters:

  • file

  • root

Throws:

  • RuntimeException, – if subdir is symlink on a directory or if the root is a simlink.

isSymlinkPointingTo#

public static boolean isSymlinkPointingTo(File symlink, File target)#
Parameters:

  • symlink

  • target

Returns:

true, if symlink is a symbolic link and pointing to target. false otherwise

rename#

public static Undoable rename(File file, File target)#

runChownScript#

public static void runChownScript(File file)#

testChownScript#

public static void testChownScript()#
Throws:

toHex#

public static String toHex(byte[] binary)#

Convert a byte array to HEX

Parameters:

  • b

Returns:

hexadecimal (as String).