com.tensegrity.generic.util
Class IOUtil

java.lang.Object
  com.tensegrity.generic.util.IOUtil

public class IOUtil

extends java.lang.Object

Utility methods for IO operations

Author:

BurkhardWick

Method Summary

static java.lang.String	getExtension(java.io.File f) Method getExtension extracts the extension of a given file.
static java.lang.String	getExtension(java.lang.String filename) Method getExtension returns the extension of a given filename.
static java.lang.String	getTextContent(java.net.URL url, java.lang.String encoding) Reads the contents of the file into a string and returns it.
static java.io.BufferedInputStream	getUncompressedStream(java.io.File file) Returns a stream containing uncompressed data.
static java.io.BufferedInputStream	getUncompressedStream(java.io.InputStream is) Returns a stream containing uncompressed data.
static boolean	isCompressed(java.io.File file) Checks if the given file is compressed in any known format.
static boolean	isCompressed(java.io.InputStream is) Checks if the given stream is compressed in any known format. !
static boolean	isXMLFile(java.io.File file) Method isXMLFile reads the first line of the file and checks whether it starts with the typical xml definition.
static boolean	isXMLFile(java.io.InputStream is) Method isXMLFile reads the first line of the file and checks whether it starts with the typical xml definition.
static java.io.File	redirectWindowsLink(java.io.File linkFile) Tries to redirect a windows LNK file to the destination it points to

Methods inherited from class java.lang.Object

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

Method Detail

isXMLFile

public static boolean isXMLFile(java.io.File file)

Method isXMLFile reads the first line of the file and checks whether it starts with the typical xml definition. If such a definition is found the method returns true, otherwise false.

Parameters:

file - the File to examine.

Returns:

boolean true iff the file is an xml file.

isXMLFile

public static boolean isXMLFile(java.io.InputStream is)

Method isXMLFile reads the first line of the file and checks whether it starts with the typical xml definition. If such a definition is found the method returns true, otherwise false. The stream has to support marking!

Parameters:

is - the InputStream to examine

Returns:

boolean true iff the file is an xml file.

isCompressed

public static boolean isCompressed(java.io.File file)

Checks if the given file is compressed in any known format.

Parameters:

file - The file to check

Returns:

true, if the file contains data in a known compression

isCompressed

public static boolean isCompressed(java.io.InputStream is)

Checks if the given stream is compressed in any known format. !NOTE! This method might change the position in the stream

Parameters:

is - The stream to check

Returns:

true, if the stream contains data in a known compression

getUncompressedStream

public static java.io.BufferedInputStream getUncompressedStream(java.io.File file)
                                                         throws java.io.IOException

Returns a stream containing uncompressed data.

Parameters:

file - The input file to read from

Returns:

A stream containing uncompressed data.

Throws:

java.io.IOException - If reading from the file failed

getUncompressedStream

public static java.io.BufferedInputStream getUncompressedStream(java.io.InputStream is)
                                                         throws java.io.IOException

Returns a stream containing uncompressed data.

Parameters:

is - The input stream to read from

Returns:

A stream containing uncompressed data.

Throws:

java.io.IOException - If reading from the stream failed

getExtension

public static java.lang.String getExtension(java.io.File f)

Method getExtension extracts the extension of a given file.

Parameters:

f - the file to examine.

Returns:

String the extension of the file.

getExtension

public static java.lang.String getExtension(java.lang.String filename)

Method getExtension returns the extension of a given filename.

Parameters:

filename - the name of a file as string.

Returns:

String the extension of the file or an empty string.

getTextContent

public static final java.lang.String getTextContent(java.net.URL url,
                                                    java.lang.String encoding)
                                             throws java.io.UnsupportedEncodingException,
                                                    java.io.IOException

Reads the contents of the file into a string and returns it.

Parameters:

url - The URL to read from

encoding - The encoding of the file

Returns:

The read data as string

Throws:

java.io.UnsupportedEncodingException - If the encoding is not supported

java.io.IOException - If there was an error while reading

redirectWindowsLink

public static final java.io.File redirectWindowsLink(java.io.File linkFile)

Tries to redirect a windows LNK file to the destination it points to

Parameters:

linkFile - The original file representing a LNK file

Returns:

The real file pointed to or the original file, if the link could not be resolved