.. java:import:: java.io BufferedReader

.. java:import:: java.io File

.. java:import:: java.io FileInputStream

.. java:import:: java.io IOException

.. java:import:: java.io InputStream

.. java:import:: java.io InputStreamReader

.. java:import:: java.io Reader

.. java:import:: java.nio.file LinkOption

.. java:import:: java.security MessageDigest

.. java:import:: java.security NoSuchAlgorithmException

.. java:import:: java.util Arrays

.. java:import:: org.caosdb.server CaosDBException

.. java:import:: org.caosdb.server CaosDBServer

.. java:import:: org.caosdb.server FileSystem

.. java:import:: org.caosdb.server ServerProperties

.. java:import:: org.caosdb.server.database.exceptions TransactionException

.. java:import:: org.caosdb.server.entity Message

.. java:import:: org.eclipse.jetty.io RuntimeIOException

FileUtils
=========

.. java:package:: org.caosdb.server.utils
   :noindex:

.. java:type:: public class FileUtils

Fields
------
chownScript
^^^^^^^^^^^

.. java:field:: public static String chownScript
   :outertype: FileUtils

Methods
-------
createFolders
^^^^^^^^^^^^^

.. java:method:: public static Undoable createFolders(File folder) throws Message
   :outertype: FileUtils

createSymlink
^^^^^^^^^^^^^

.. java:method:: public static File createSymlink(File link, File target)
   :outertype: FileUtils

delete
^^^^^^

.. java:method:: public static Undoable delete(File file) throws IOException, CaosDBException, InterruptedException
   :outertype: FileUtils

delete
^^^^^^

.. java:method:: public static Undoable delete(File file, boolean recursive) throws IOException, CaosDBException, InterruptedException
   :outertype: FileUtils

   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.

   :param file:
   :param recursive:
   :throws IOException:
   :throws InterruptedException:
   :throws CaosDBException:

getChecksum
^^^^^^^^^^^

.. java:method:: public static String getChecksum(File file)
   :outertype: FileUtils

   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.

   :param file:
   :return: SHA-512 Checksum

getMimeType
^^^^^^^^^^^

.. java:method:: public static String getMimeType(File file)
   :outertype: FileUtils

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

   :param file:

getSize
^^^^^^^

.. java:method:: public static Long getSize(File file)
   :outertype: FileUtils

   Get the size of a file or folder.

   :param file:

isSubDirSymlinkSave
^^^^^^^^^^^^^^^^^^^

.. java:method:: public static boolean isSubDirSymlinkSave(File file, File root)
   :outertype: FileUtils

   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.

   :param file:
   :param root:
   :throws RuntimeException,: if subdir is symlink on a directory or if the root is a simlink.

isSymlink
^^^^^^^^^

.. java:method:: public static boolean isSymlink(File file)
   :outertype: FileUtils

isSymlinkPointingTo
^^^^^^^^^^^^^^^^^^^

.. java:method:: public static boolean isSymlinkPointingTo(File symlink, File target)
   :outertype: FileUtils

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

rename
^^^^^^

.. java:method:: public static Undoable rename(File file, File target) throws Message, IOException
   :outertype: FileUtils

runChownScript
^^^^^^^^^^^^^^

.. java:method:: public static void runChownScript(File file)
   :outertype: FileUtils

testChownScript
^^^^^^^^^^^^^^^

.. java:method:: @Deprecated public static void testChownScript() throws IOException, InterruptedException, CaosDBException
   :outertype: FileUtils

   :throws IOException:
   :throws InterruptedException:
   :throws CaosDBException:

toHex
^^^^^

.. java:method:: public static String toHex(byte[] binary)
   :outertype: FileUtils

   Convert a byte array to HEX

   :param b:
   :return: hexadecimal (as String).

unlink
^^^^^^

.. java:method:: public static Undoable unlink(File file) throws IOException, InterruptedException
   :outertype: FileUtils