cluster5.shared.utils
Class FileUtils

java.lang.Object
  cluster5.shared.utils.FileUtils

public class FileUtils
extends java.lang.Object

Constructor Summary

FileUtils()

Method Summary

static void	copy(java.io.InputStream inputStream, java.io.OutputStream outputStream) Copies data from input stream into output stream and after all data is copied it closes the output stream.
static boolean	deleteDirectory(java.lang.String fullPath) Deletes a nonempty directory.
static boolean	deleteFile(java.lang.String fullPath) Deletes specified file from the file system.
static java.lang.String	generateFilename(java.lang.String prefix, java.lang.String fileExtension) Generates new filename composed by prefix, randomly generated integer, current time in milliseconds and extension given by the original fileName.
static java.lang.String	getFileExtension(java.lang.String filename) Returns extension of specified file.
static byte[]	readFromFile(java.lang.String fullPath) Reads data from specified file.
static void	saveToFile(java.lang.String fullPath, byte[] data) Saves data into a file.
static void	saveToFile(java.lang.String fullPath, java.io.InputStream inputStream) Saves all data coming from the input stream into specified file.

Methods inherited from class java.lang.Object

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

Constructor Detail

FileUtils

public FileUtils()

Method Detail

generateFilename

public static java.lang.String generateFilename(java.lang.String prefix,
                                                java.lang.String fileExtension)

Generates new filename composed by prefix, randomly generated integer, current time in milliseconds and extension given by the original fileName.

Parameters:

prefix -

fileExtension -

Returns:

newly generated file name

deleteFile

public static boolean deleteFile(java.lang.String fullPath)

Deletes specified file from the file system.

Parameters:

fullPath - path where the file is located

Returns:

true if the file was deleted

deleteDirectory

public static boolean deleteDirectory(java.lang.String fullPath)

Deletes a nonempty directory.

Parameters:

fullPath -

Returns:

true if the directory was deleted

getFileExtension

public static java.lang.String getFileExtension(java.lang.String filename)

Returns extension of specified file.

Parameters:

filename -

Returns:

extension of specified file

saveToFile

public static void saveToFile(java.lang.String fullPath,
                              java.io.InputStream inputStream)
                       throws java.io.FileNotFoundException,
                              java.io.IOException

Saves all data coming from the input stream into specified file.

Parameters:

fullPath -

inputStream -

Throws:

java.io.FileNotFoundException

java.io.IOException

saveToFile

public static void saveToFile(java.lang.String fullPath,
                              byte[] data)
                       throws java.io.FileNotFoundException

Saves data into a file.

Parameters:

fullPath -

data - bytes to save

Throws:

java.io.FileNotFoundException

copy

public static void copy(java.io.InputStream inputStream,
                        java.io.OutputStream outputStream)
                 throws java.io.IOException

Copies data from input stream into output stream and after all data is copied it closes the output stream. Reads data from the input stream until there are some available and the input stream is open. (It basically provides the same functionality as import org.apache.commons.io.IOUtils.copy().)

Parameters:

inputStream - source input stream

outputStream - sink output stream

Throws:

java.io.IOException

readFromFile

public static byte[] readFromFile(java.lang.String fullPath)

Reads data from specified file. Note that reading huge files might result in OutOfMemoryException.

Parameters:

fullPath - path + filename to a file

Returns:

file content in byte array or null if file was not found