net.sf.borg.common
Class IOHelper

java.lang.Object
  net.sf.borg.common.IOHelper

public class IOHelper
extends Object

standard routines for file I/O with prompting

Constructor Summary

IOHelper()

Method Summary

static boolean	checkOverwrite(String fname) displays an overwrite confirm dialog if a file exists
static OutputStream	createOutputStream(String file) create an output stream to a file, creating parent dirs as needed
static OutputStream	createOutputStream(URL url) Creates an output stream to a URL
static InputStream	fileOpen(String startDirectory, String title) Prompt the user to choose a file to open
static void	fileSave(String startDirectory, InputStream istr, String defaultFilename) prompt the user to pick a file for saving and save date to the file

Methods inherited from class java.lang.Object

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

Constructor Detail

IOHelper

public IOHelper()

Method Detail

fileOpen

public static InputStream fileOpen(String startDirectory,
                                   String title)
                            throws Exception

Prompt the user to choose a file to open

Parameters:

startDirectory - the start directory

title - the window title

Returns:

the input stream

Throws:

Exception - the exception

fileSave

public static void fileSave(String startDirectory,
                            InputStream istr,
                            String defaultFilename)
                     throws Exception

prompt the user to pick a file for saving and save date to the file

Parameters:

startDirectory - the start directory

istr - the stream to write out to the file

defaultFilename - the default filename

Throws:

Exception - the exception

createOutputStream

public static OutputStream createOutputStream(URL url)
                                       throws Exception

Creates an output stream to a URL

Parameters:

url - the url

Returns:

the output stream

Throws:

Exception - the exception

createOutputStream

public static OutputStream createOutputStream(String file)
                                       throws Exception

create an output stream to a file, creating parent dirs as needed

Parameters:

file - the file

Returns:

the output stream

Throws:

Exception - the exception

checkOverwrite

public static boolean checkOverwrite(String fname)

displays an overwrite confirm dialog if a file exists

Parameters:

fname - the filename

Returns:

true, if the user says it's ok to overwrite