it.cnr.isti.hpc.io

Class IOUtils

java.lang.Object

it.cnr.isti.hpc.io.IOUtils

public class IOUtils
extends Object

Utilities to manage files.

Author:

Diego Ceccarelli, diego.ceccarelli@isti.cnr.it created on 25/gen/2012

Constructor Summary

Constructors

Constructor and Description
IOUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static String	getFileAsString(String file) Open a file and returns a string containing the content of the file It terminates the execution in case of any type of error.
static String	getFileAsUTF8String(String file) Returns a list where each element is a line of the UTF8 file It terminates the execution in case of any type of error.
static List<String>	getLines(String file) Returns a list where each element is a line of the file It terminates the execution in case of any type of error.
static BufferedReader	getPlainOrCompressedReader(String file) Opens a file.
static BufferedReader	getPlainOrCompressedUTF8Reader(String file) Opens an UTF8 file.
static BufferedWriter	getPlainOrCompressedUTF8Writer(String file) Opens a UTF8 file for writing.
static BufferedWriter	getPlainOrCompressedWriter(String file) Opens a file for writing.

Methods inherited from class java.lang.Object

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

Constructor Detail

IOUtils

public IOUtils()

Method Detail

getPlainOrCompressedReader

public static BufferedReader getPlainOrCompressedReader(String file)

Opens a file. If the file ends with gz, it uses a GZIP reader.
It terminates the execution in case of any type of error.

Parameters:

file - - the path of the file to open.

Returns:

a reader to the file

getPlainOrCompressedUTF8Reader

public static BufferedReader getPlainOrCompressedUTF8Reader(String file)

Opens an UTF8 file. If the file ends with gz, it uses a GZIP reader.
It terminates the execution in case of any type of error.

Parameters:

file - - the path of the file to open.

Returns:

a reader to the file

getPlainOrCompressedWriter

public static BufferedWriter getPlainOrCompressedWriter(String file)

Opens a file for writing. If the file ends with gz, it uses a GZIP writer.
It terminates the execution in case of any type of error.

Parameters:

file - - the path of the file to open.

Returns:

a writer to the file

getPlainOrCompressedUTF8Writer

public static BufferedWriter getPlainOrCompressedUTF8Writer(String file)

Opens a UTF8 file for writing. If the file ends with gz, it uses a GZIP writer.
It terminates the execution in case of any type of error.

Parameters:

file - - the path of the file to open.

Returns:

a writer to the file

getFileAsString

public static String getFileAsString(String file)

Open a file and returns a string containing the content of the file
It terminates the execution in case of any type of error.

Parameters:

file - - the path of the file to open.

Returns:

a reader to the file

getLines

public static List<String> getLines(String file)

Returns a list where each element is a line of the file
It terminates the execution in case of any type of error.

Parameters:

file - the file to read

Returns:

a list with the lines of the file

getFileAsUTF8String

public static String getFileAsUTF8String(String file)

Returns a list where each element is a line of the UTF8 file
It terminates the execution in case of any type of error.

Parameters:

file - the path of the file to open

Returns:

a list with the lines of the file