meka.core

Class FileUtils

java.lang.Object

meka.core.FileUtils

public class FileUtils
extends Object

Utility class for I/O related actions.

Version:

$Revision$

Author:

fracpete (fracpete at waikato dot ac dot nz)

Constructor Summary

Constructors

Constructor and Description
FileUtils()

Method Summary

Modifier and Type	Method and Description
static void	closeQuietly(InputStream is) Closes the stream, if possible, suppressing any exception.
static void	closeQuietly(OutputStream os) Closes the stream, if possible, suppressing any exception.
static void	closeQuietly(Reader reader) Closes the reader, if possible, suppressing any exception.
static void	closeQuietly(Writer writer) Closes the writer, if possible, suppressing any exception.
static String	createPartialFilename(File file, int numParentDirs) Creates a partial filename for the given file, based on how many parent directories should be included.
static int	getDirectoryDepth(File file) Returns the number of directories that this file object contains.
static String	getExtension(File file) Returns the extension of the file, if any.
static String	getExtension(String filename) Returns the extension of the file, if any.

Methods inherited from class java.lang.Object

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

Constructor Detail

FileUtils

public FileUtils()

Method Detail

getDirectoryDepth

public static int getDirectoryDepth(File file)

Returns the number of directories that this file object contains. E.g.: /home/blah/some/where.txt will return 3. /blah.txt returns 0.

Parameters:

file - the file

createPartialFilename

public static String createPartialFilename(File file,
                                           int numParentDirs)

Creates a partial filename for the given file, based on how many parent directories should be included. Examples:

 createPartialFilename(new File("/home/some/where/file.txt"), -1)
   = /home/some/where/file.txt
 createPartialFilename(new File("/home/some/where/file.txt"), 0)
   = file.txt
 createPartialFilename(new File("/home/some/where/file.txt"), 1)
   = where/file.txt
 createPartialFilename(new File("/home/some/where/file.txt"), 2)
   = some/where/file.txt
 

Parameters:

file - the file to create the partial filename for

numParentDirs - the number of parent directories to include in the partial name, -1 returns the absolute filename

Returns:

the generated filename

closeQuietly

public static void closeQuietly(InputStream is)

Closes the stream, if possible, suppressing any exception.

Parameters:

is - the stream to close

closeQuietly

public static void closeQuietly(OutputStream os)

Closes the stream, if possible, suppressing any exception.

Parameters:

os - the stream to close

closeQuietly

public static void closeQuietly(Reader reader)

Closes the reader, if possible, suppressing any exception.

Parameters:

reader - the reader to close

closeQuietly

public static void closeQuietly(Writer writer)

Closes the writer, if possible, suppressing any exception.

Parameters:

writer - the writer to close

getExtension

public static String getExtension(File file)

Returns the extension of the file, if any.

Parameters:

file - the file to get the extension from

Returns:

the extension (no dot), null if none available

getExtension

public static String getExtension(String filename)

Returns the extension of the file, if any.

Parameters:

filename - the file to get the extension from

Returns:

the extension (no dot), null if none available