Package org.daisy.dotify.common.io

Class FileIO

java.lang.Object

org.daisy.dotify.common.io.FileIO

public class FileIO
extends Object

Provides file IO tools.

Method Summary

Modifier and Type	Method	Description
static void	copy(InputStream is, OutputStream os)	Copies an input stream to an output stream.
static void	copyRecursive(File f, File out)	Copies a folder recursively.
static File	createTempDir()	Creates a temp folder.
static File	createTempFile()	Creates a temp file.
static void	deleteRecursive(File f)	Deletes a folder recursively.
static long	diff(InputStream f1, InputStream f2)	Compares the input streams binary.
static Collection<File>	listFilesRecursive(File dir, String ext)	Lists files in the specified folder and sub folders having the specified extension.
static URL[]	toURL(File[] files)	Converts an array of File objects into URL's.

Methods inherited from class java.lang.Object

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

Method Detail

copy

public static void copy(InputStream is,
                        OutputStream os)
                 throws IOException

Copies an input stream to an output stream. In Java 9 or later, use is.transferTo(OutputStream).

Parameters:

is - the input stream

os - the output stream

Throws:

IOException - if IO fails

createTempFile

public static File createTempFile()
                           throws IOException

Creates a temp file.

Returns:

returns a the created file

Throws:

IOException - if IO fails

createTempDir

public static File createTempDir()
                          throws IOException

Creates a temp folder.

Returns:

returns the created folder

Throws:

IOException - if IO fails

copyRecursive

public static void copyRecursive(File f,
                                 File out)

Copies a folder recursively.

Parameters:

f - the source folder

out - the destination folder

deleteRecursive

public static void deleteRecursive(File f)

Deletes a folder recursively.

Parameters:

f - the folder to delete

diff

public static long diff(InputStream f1,
                        InputStream f2)
                 throws IOException

Compares the input streams binary.

Parameters:

f1 - the first input stream

f2 - the second input stream

Returns:

returns -1 if the streams are equal, byte position where first difference occurred otherwise

Throws:

IOException - if IO fails

listFilesRecursive

public static Collection<File> listFilesRecursive(File dir,
                                                  String ext)

Lists files in the specified folder and sub folders having the specified extension. For non-recursive file listing, use: dir.listFiles((parent, name)->name.endsWith(ext));

Parameters:

dir - the folder to start search

ext - the file extensions to find

Returns:

returns a list of files

toURL

public static URL[] toURL(File[] files)

Converts an array of File objects into URL's.

Parameters:

files - the files to convert

Returns:

returns an array of URL's