org.ocpsoft.redoculous.config.util

Class Files

java.lang.Object

org.ocpsoft.redoculous.config.util.Files

public final class Files
extends Object

Author:

Lincoln Baxter, III

Field Summary

Fields

Modifier and Type	Field and Description
static String	HOME_ALIAS
static long	ONE_GB The number of bytes in a gigabyte.
static long	ONE_KB The number of bytes in a kilobyte.
static long	ONE_MB The number of bytes in a megabyte.
static String	SLASH

Constructor Summary

Constructors

Constructor and Description
Files()

Method Summary

Methods

Modifier and Type	Method and Description
static String	canonicalize(String target) Replace instances of internal tokens with actual file equivalents.
static void	copyDirectory(File srcDir, File destDir) Copies a whole directory to a new location.
static void	copyDirectory(File srcDir, File destDir, FileFilter filter) Copies a filtered directory to a new location.
static void	copyFile(File srcFile, File destFile) Copies a file to a new location.
static void	copyFileToDirectory(File srcFile, File destDir) Copies a file to a directory optionally preserving the file date.
static boolean	delete(File file)
static boolean	delete(File file, boolean recursive)
static void	deleteOnExit(File file) Requests that the file or directory denoted by this resource be deleted when the virtual machine terminates.
static File	getWorkingDirectory()

Methods inherited from class java.lang.Object

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

Field Detail

HOME_ALIAS

public static final String HOME_ALIAS

See Also:

Constant Field Values

SLASH

public static final String SLASH

ONE_KB

public static final long ONE_KB

The number of bytes in a kilobyte.

See Also:

Constant Field Values

ONE_MB

public static final long ONE_MB

The number of bytes in a megabyte.

See Also:

Constant Field Values

ONE_GB

public static final long ONE_GB

The number of bytes in a gigabyte.

See Also:

Constant Field Values

Constructor Detail

Files

public Files()

Method Detail

delete

public static boolean delete(File file)

deleteOnExit

public static void deleteOnExit(File file)

Requests that the file or directory denoted by this resource be deleted when the virtual machine terminates.

Once deletion has been requested, it is not possible to cancel the request. This method should therefore be used with care.

delete

public static boolean delete(File file,
             boolean recursive)

canonicalize

public static String canonicalize(String target)

Replace instances of internal tokens with actual file equivalents.

getWorkingDirectory

public static File getWorkingDirectory()

copyFileToDirectory

public static void copyFileToDirectory(File srcFile,
                       File destDir)
                                throws IOException

Copies a file to a directory optionally preserving the file date.

This method copies the contents of the specified source file to a file of the same name in the specified destination directory. The destination directory is created if it does not exist. If the destination file exists, then this method will overwrite it.

Note: Setting preserveFileDate to true tries to preserve the file's last modified date/times using File.setLastModified(long), however it is not guaranteed that the operation will succeed. If the modification operation fails, no indication is provided.

Parameters:

srcFile - an existing file to copy, must not be null

destDir - the directory to place the copy in, must not be null

Throws:

NullPointerException - if source or destination is null

IOException - if source or destination is invalid

IOException - if an IO error occurs during copying

Since:

Commons IO 1.3

See Also:

copyFile(File, File)

copyFile

public static void copyFile(File srcFile,
            File destFile)
                     throws IOException

Copies a file to a new location.

This method copies the contents of the specified source file to the specified destination file. The directory holding the destination file is created if it does not exist. If the destination file exists, then this method will overwrite it.

Parameters:

srcFile - an existing file to copy, must not be null

destFile - the new file, must not be null

preserveFileDate - true if the file date of the copy should be the same as the original

Throws:

NullPointerException - if source or destination is null

IOException - if source or destination is invalid

IOException - if an IO error occurs during copying

See Also:

#copyFileToDirectory(File, File, boolean)

copyDirectory

public static void copyDirectory(File srcDir,
                 File destDir)
                          throws IOException

Copies a whole directory to a new location.

This method copies the contents of the specified source directory to within the specified destination directory.

The destination directory is created if it does not exist. If the destination directory did exist, then this method merges the source with the destination, with the source taking precedence.

Note: Setting preserveFileDate to true tries to preserve the files' last modified date/times using File.setLastModified(long), however it is not guaranteed that those operations will succeed. If the modification operation fails, no indication is provided.

Parameters:

srcDir - an existing directory to copy, must not be null

destDir - the new directory, must not be null

Throws:

NullPointerException - if source or destination is null

IOException - if source or destination is invalid

IOException - if an IO error occurs during copying

Since:

1.1

copyDirectory

public static void copyDirectory(File srcDir,
                 File destDir,
                 FileFilter filter)
                          throws IOException

Copies a filtered directory to a new location.

This method copies the contents of the specified source directory to within the specified destination directory.

The destination directory is created if it does not exist. If the destination directory did exist, then this method merges the source with the destination, with the source taking precedence.

Note: Setting preserveFileDate to true tries to preserve the files' last modified date/times using File.setLastModified(long), however it is not guaranteed that those operations will succeed. If the modification operation fails, no indication is provided.

Example: Copy directories only

 // only copy the directory structure
 FileUtils.copyDirectory(srcDir, destDir, DirectoryFileFilter.DIRECTORY, false);
 

Example: Copy directories and txt files

 // Create a filter for ".txt" files
 IOFileFilter txtSuffixFilter = FileFilterUtils.suffixFileFilter(".txt");
 IOFileFilter txtFiles = FileFilterUtils.andFileFilter(FileFileFilter.FILE, txtSuffixFilter);
 
 // Create a filter for either directories or ".txt" files
 FileFilter filter = FileFilterUtils.orFileFilter(DirectoryFileFilter.DIRECTORY, txtFiles);
 
 // Copy using the filter
 FileUtils.copyDirectory(srcDir, destDir, filter, false);
 

Parameters:

srcDir - an existing directory to copy, must not be null

destDir - the new directory, must not be null

filter - the filter to apply, null means copy all directories and files

preserveFileDate - true if the file date of the copy should be the same as the original

Throws:

NullPointerException - if source or destination is null

IOException - if source or destination is invalid

IOException - if an IO error occurs during copying

Since:

1.4