com.izforge.izpack.util

Class IoHelper

java.lang.Object

com.izforge.izpack.util.IoHelper

public class IoHelper
extends Object

I/O-related utility methods.

Constructor Summary

Constructors

Constructor and Description
IoHelper()

Method Summary

Modifier and Type	Method and Description
static void	copyStreamToJar(InputStream zin, ZipOutputStream out, String currentName, long fileTime)
static File	copyToTempFile(File templateFile, String defaultExtension) Creates a temp file with delete on exit rule.
static File	copyToTempFile(String template, String defaultExtension) Creates a temp file with delete on exit rule.
static File	existingParent(File path) Returns the first existing parent directory in a path
static long	getFreeSpace(String path) Returns the free (disk) space for the given path.
static boolean	supported(String method) Returns whether the given method will be supported with the given environment.
static String	translatePath(String destination) Translates a path.
static String	translatePath(String destination, Variables variables) Translates a relative path to a local system path.

Methods inherited from class java.lang.Object

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

Constructor Detail

IoHelper

public IoHelper()

Method Detail

copyToTempFile

public static File copyToTempFile(String template,
                                  String defaultExtension)
                           throws IOException

Creates a temp file with delete on exit rule. The extension is extracted from the template if possible, else the default extension is used. The contents of template will be copied into the temporary file.

Parameters:

template - file path to copy from and define file extension

defaultExtension - file extension if no is contained in template

Returns:

newly created and filled temporary file

Throws:

IOException - if an I/O error occurred

copyToTempFile

public static File copyToTempFile(File templateFile,
                                  String defaultExtension)
                           throws IOException

Creates a temp file with delete on exit rule. The extension is extracted from the template if possible, else the default extension is used. The contents of template will be copied into the temporary file.

Parameters:

templateFile - file to copy from and define file extension

defaultExtension - file extension if no is contained in template

Returns:

newly created and filled temporary file

Throws:

IOException - if an I/O error occurred

getFreeSpace

public static long getFreeSpace(String path)

Returns the free (disk) space for the given path. If it is not ascertainable -1 returns.

Parameters:

path - path for which the free space should be detected

Returns:

the free space for the given path

supported

public static boolean supported(String method)

Returns whether the given method will be supported with the given environment. Some methods of this class are not supported on all operation systems.

Parameters:

method - name of the method

Returns:

true if the method will be supported with the current environment else false

Throws:

RuntimeException - if the given method name does not exist

existingParent

public static File existingParent(File path)

Returns the first existing parent directory in a path

Parameters:

path - path which should be scanned

Returns:

the first existing parent directory in a path

translatePath

public static String translatePath(String destination,
                                   Variables variables)

Translates a relative path to a local system path.

Parameters:

destination - the path to translate

variables - used to replaces variables in the path

Returns:

the translated path

translatePath

public static String translatePath(String destination)

Translates a path.

Parameters:

destination - the path to translate

Returns:

the translated path

copyStreamToJar

public static void copyStreamToJar(InputStream zin,
                                   ZipOutputStream out,
                                   String currentName,
                                   long fileTime)
                            throws IOException

Throws:

IOException