Package org.teichert.databaseexplorer.utils

Class FileHelper

java.lang.Object

org.teichert.databaseexplorer.utils.FileHelper

public final class FileHelper
extends Object

Helper-class for handling with files.

Method Summary

Modifier and Type	Method	Description
static void	byteArrayToFile(byte[] bytes, File outputFile)	Saves all bytes into the given file.
static byte[]	byteArrayToFile(File file)	Converts the file to a byte[].
static String	bytesToHex(byte[] bytes)
static File	generateUniqueFile(File file, String mimetype)	Generates a file with the given mimetype and returns this new file back. If the passed file is null, null will be returned!
static List<File>	getAllFilesRecursivly(File pFile, String suffix)	Returns all files recursivly within the pFile for the specific suffix in a list.
static byte[]	getBytes(InputStream is)	Reads the inputstream into a ByteArrayOutputStream and returns the byte[] as the result.
static Manifest	getManifestFile(File jarfile)	Returns the Manifest-data from the given jarfile.
static String	getOnlyFilename(File file)	Return only the filename without suffix.
static PrintStream	outputFile(String name)
static void	read(InputStream io, int maxRows, Consumer<String> fn)
static void	read(InputStream io, String charset, int maxRows, Consumer<String> fn)
static void	read(InputStream io, String charset, Consumer<String> fn)
static void	read(InputStream io, Consumer<String> fn)
static void	read(Reader reader, Consumer<String> fn)
static String	readFile(File f)	Reads in a file and converts it to a string.
static String	readFile(File f, String charset)	Reads in a file and converts it to a string.
static String	readFile(InputStream io)	Reads in a file and converts it to a string.
static String	readFile(InputStream io, String charset)	Reads in a file and converts it to a string.
static String	readFile(Reader reader)	Reads in a file and converts it to a string.
static boolean	writeStringToFile(File file, String text)

Methods inherited from class java.lang.Object

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

Method Detail

readFile

public static String readFile(File f)

Reads in a file and converts it to a string.

Parameters:

f - = file to be read in and converted.

Returns:

readFile

public static String readFile(InputStream io)

Reads in a file and converts it to a string.

Parameters:

io -

Returns:

readFile

public static String readFile(Reader reader)

Reads in a file and converts it to a string.

Parameters:

reader -

Returns:

readFile

public static String readFile(File f,
                              String charset)

Reads in a file and converts it to a string.

Parameters:

f - = file to be read in and converted.

Returns:

readFile

public static String readFile(InputStream io,
                              String charset)

Reads in a file and converts it to a string.

Parameters:

io -

charset -

Returns:

read

public static void read(InputStream io,
                        String charset,
                        int maxRows,
                        Consumer<String> fn)

read

public static void read(InputStream io,
                        String charset,
                        Consumer<String> fn)

read

public static void read(InputStream io,
                        int maxRows,
                        Consumer<String> fn)

read

public static void read(InputStream io,
                        Consumer<String> fn)

read

public static void read(Reader reader,
                        Consumer<String> fn)

getManifestFile

public static Manifest getManifestFile(File jarfile)
                                throws IOException

Returns the Manifest-data from the given jarfile.

Parameters:

jarfile -

Returns:

Throws:

IOException

writeStringToFile

public static boolean writeStringToFile(File file,
                                        String text)

outputFile

public static PrintStream outputFile(String name)
                              throws FileNotFoundException

Throws:

FileNotFoundException

byteArrayToFile

public static void byteArrayToFile(byte[] bytes,
                                   File outputFile)

Saves all bytes into the given file.

Parameters:

bytes - = byte-arry to save into the save

outputFile - = file which will be overwritten with the given byte-arry

byteArrayToFile

public static byte[] byteArrayToFile(File file)

Converts the file to a byte[].

Parameters:

file -

Returns:

generateUniqueFile

public static File generateUniqueFile(File file,
                                      String mimetype)
                               throws IOException

Generates a file with the given mimetype and returns this new file back.
If the passed file is null, null will be returned!

Example:
If "File.txt" already exists then simply "File(1).txt" will be created,
if this also exists, a value "File(x).txt" is tried until one of them works.

Parameters:

file - = File to create.

mimetype - = Mimetype of the file to create.

Returns:

Throws:

IOException

getAllFilesRecursivly

public static List<File> getAllFilesRecursivly(File pFile,
                                               String suffix)

Returns all files recursivly within the pFile for the specific suffix in a list.

Parameters:

pFile -

suffix -

Returns:

getOnlyFilename

public static String getOnlyFilename(File file)

Return only the filename without suffix.

Parameters:

file -

Returns:

bytesToHex

public static String bytesToHex(byte[] bytes)

getBytes

public static byte[] getBytes(InputStream is)
                       throws IOException

Reads the inputstream into a ByteArrayOutputStream and returns the byte[] as the result.

Parameters:

is -

Returns:

Throws:

IOException