org.placidus.file
Class FileHelper

java.lang.Object
  org.placidus.file.FileHelper

public class FileHelper
extends java.lang.Object

Contains helperfunctions for File

Author:

ds

Constructor Summary

FileHelper()

Method Summary

static long	getAdlerSum(java.lang.String fileName)
static long	getCheckSum(java.lang.String fileName, java.util.zip.Checksum checkSum) This will calculate the given checksumtype of the filecontent for the given name
static long	getCRC32Sum(java.lang.String fileName)
static java.io.File	getFileForName(java.lang.String filename) This function creates a File object for the given filename with different methods to load it.
static java.lang.String	getTempDir() Returns the temp-dir from system property "java.io.tmpdir".
static java.io.File	save(java.io.File file, byte[] toSave) Used to save given bytes to given file object
static java.io.File	save(java.lang.String fileName, byte[] toSave) This function saves the given bytes into the given filename
static java.io.File	saveToTempDir(java.lang.String fileName, byte[] toSave) Saves the given byte array to filename in tempfolder
static java.io.File	saveToTempFile(java.lang.String prefix, java.lang.String suffix, byte[] toSave) Saves the given byte array to filename in tempfolder

Methods inherited from class java.lang.Object

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

Constructor Detail

FileHelper

public FileHelper()

Method Detail

getFileForName

public static java.io.File getFileForName(java.lang.String filename)
                                   throws java.io.IOException,
                                          java.net.URISyntaxException

This function creates a File object for the given filename with different methods to load it. If you want to load a file from .jar files, use StreamHelper.getInputStreamForName(String)

Parameters:

filename - of new fileobject

Returns:

new fileobject

Throws:

java.io.IOException

java.net.URISyntaxException - if URL from resource is not formatted strictly according to to RFC2396 and cannot be converted to a URI

saveToTempDir

public static java.io.File saveToTempDir(java.lang.String fileName,
                                         byte[] toSave)
                                  throws java.io.IOException

Saves the given byte array to filename in tempfolder

Parameters:

fileName - filename to use in tempfolder

toSave - bytes to save

Returns:

returns the created File object

Throws:

java.io.IOException

saveToTempFile

public static java.io.File saveToTempFile(java.lang.String prefix,
                                          java.lang.String suffix,
                                          byte[] toSave)
                                   throws java.io.IOException

Saves the given byte array to filename in tempfolder

Parameters:

prefix - filename part

suffix - suffix part

toSave - bytes to save

Returns:

returns the created File object

Throws:

java.io.IOException

save

public static java.io.File save(java.lang.String fileName,
                                byte[] toSave)
                         throws java.io.IOException

This function saves the given bytes into the given filename

Parameters:

fileName - file to save

toSave - content to save

Returns:

returns the created File object

Throws:

java.io.IOException

save

public static java.io.File save(java.io.File file,
                                byte[] toSave)
                         throws java.io.IOException

Used to save given bytes to given file object

Parameters:

file - to save to

toSave - to save

Returns:

returns the given File object

Throws:

java.io.IOException

getCRC32Sum

public static long getCRC32Sum(java.lang.String fileName)
                        throws java.io.IOException,
                               java.net.URISyntaxException

Throws:

java.io.IOException

java.net.URISyntaxException

See Also:

with checksum = new CRC32

getAdlerSum

public static long getAdlerSum(java.lang.String fileName)
                        throws java.io.IOException,
                               java.net.URISyntaxException

Throws:

java.io.IOException

java.net.URISyntaxException

See Also:

with checksum = new Adler32

getCheckSum

public static long getCheckSum(java.lang.String fileName,
                               java.util.zip.Checksum checkSum)
                        throws java.io.IOException,
                               java.net.URISyntaxException

This will calculate the given checksumtype of the filecontent for the given name

Parameters:

fileName - to load and build checksum for

checkSum - checksum object to build sum

Returns:

checksum of file, 0 if inputstream for file can not be created

Throws:

java.io.IOException - content can not be read

java.net.URISyntaxException - if uri of fileName is not well formed

getTempDir

public static java.lang.String getTempDir()

Returns the temp-dir from system property "java.io.tmpdir".

Returns:

tempdirpath