Package com.epimorphics.util

Class FileUtil

java.lang.Object

com.epimorphics.util.FileUtil

public class FileUtil
extends Object

Constructor Summary

Constructors

Constructor	Description
FileUtil()

Method Summary

Modifier and Type	Method	Description
static File	absoluteFile(File parent, String file)	Construct a File reference for "file".
static File	absoluteFile(String parent, String file)	Construct a File reference for "file".
static long	checksum(File file)	Compute a checksum for a file for use in detecting changes.
static long	checksum(String filename)	Compute a checksum for a file for use in detecting changes.
static long	checksum(URL url)	Compute a checksum for a bundle URL for use in detecting changes.
static void	copyDirectory(Path src, Path dest)	Copy a directory tree from a source location to a destination
static long	copyResource(File src, OutputStream os)	Copy a source file to the output stream, byte for byte.
static long	copyResource(File src, Writer out)	Copy a source file to the output writer, reading the source as UTF-8.
static long	copyResource(InputStream is, OutputStream os)	Copy a source file to the output stream, byte for byte.
static long	copyResource(InputStream is, Writer out)	Copy a source file to the output stream, byte for byte.
static long	copyResource(Reader in, Writer out)	Copy a source reader to the output writer.
static void	copyResource(String src, String dest)	Copy a source file to a destination file
static void	deleteDirectory(File directory)	Remove the directory.
static void	deleteDirectory(String directory)	Remove the directory.
static File	ensureDir(String dir)	Ensure the given directory exists and is writable.

Methods inherited from class java.lang.Object

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

Constructor Detail

FileUtil

public FileUtil()

Method Detail

copyResource

public static long copyResource(File src,
                                Writer out)
                         throws IOException

Copy a source file to the output writer, reading the source as UTF-8. Returns number of chars copied. Leaves output open.

Throws:

IOException

copyResource

public static long copyResource(Reader in,
                                Writer out)
                         throws IOException

Copy a source reader to the output writer. Returns number of chars copied. Leaves output open.

Throws:

IOException

copyResource

public static long copyResource(File src,
                                OutputStream os)
                         throws IOException

Copy a source file to the output stream, byte for byte. Returns number of bytes copied. Leaves output open.

Throws:

IOException

copyResource

public static long copyResource(InputStream is,
                                OutputStream os)
                         throws IOException

Copy a source file to the output stream, byte for byte. Returns number of bytes copied. Leaves output open.

Throws:

IOException

copyResource

public static long copyResource(InputStream is,
                                Writer out)
                         throws IOException

Copy a source file to the output stream, byte for byte. Returns number of bytes copied. Leaves output open.

Throws:

IOException

copyResource

public static void copyResource(String src,
                                String dest)
                         throws IOException

Copy a source file to a destination file

Throws:

IOException

copyDirectory

public static void copyDirectory(Path src,
                                 Path dest)
                          throws IOException

Copy a directory tree from a source location to a destination

Throws:

IOException

ensureDir

public static File ensureDir(String dir)
                      throws EpiException

Ensure the given directory exists and is writable. Tries to create it if necessary.

Throws:

ModalExeption - if the directory exists but is not accessible

EpiException

deleteDirectory

public static void deleteDirectory(String directory)

Remove the directory.

deleteDirectory

public static void deleteDirectory(File directory)

Remove the directory.

absoluteFile

public static File absoluteFile(String parent,
                                String file)

Construct a File reference for "file". If "file" is absolute then use that, if it is relative then make it relative to the given parent.

absoluteFile

public static File absoluteFile(File parent,
                                String file)

Construct a File reference for "file". If "file" is absolute then use that, if it is relative then make it relative to the given parent.

checksum

public static long checksum(String filename)

Compute a checksum for a file for use in detecting changes. May not check whole file contents.

checksum

public static long checksum(File file)

Compute a checksum for a file for use in detecting changes. May not check whole file contents.

checksum

public static long checksum(URL url)

Compute a checksum for a bundle URL for use in detecting changes. May not check whole file contents.