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/*
* Copyright (C) 2004 Sun Microsystems, Inc. All rights reserved. Use is
* subject to license terms.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the Lesser GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
/**
* JDIC API demo class.
* <p>
* The utility class convers the length to KB numbers.
*/
import java.io.File;
import java.util.Vector;
class MyUtility {
private static String osName = System.getProperty("os.name").toLowerCase();
private static File roots[] = null;
public static String length2KB(long length) {
long KB = 1024;
long MB = 1024 * 1024;
if (length == 0) {
return String.valueOf("0 KB ");
}
String kbStr = "";
long mbCount = length / MB;
long kbCount = ((length - mbCount * MB) + 1023) / KB;
if (mbCount != 0) {
kbStr += String.valueOf(mbCount + ",");
}
if (kbCount == 0) {
if (mbCount == 0) {
kbStr += String.valueOf("0 KB ");
} else {
kbStr += String.valueOf("000 KB ");
}
} else {
kbStr += String.valueOf(kbCount + " KB ");
}
return kbStr;
}
static class FileSystemRoot extends File {
public FileSystemRoot(File f) {
super(f, "");
}
public FileSystemRoot(String s) {
super(s);
}
public boolean isDirectory() {
return true;
}
}
public static File[] getRoots() {
if (roots == null) {
constructRoots();
}
return roots;
}
private static void constructRoots() {
if (osName.startsWith("windows")) {
Vector rootsVector = new Vector();
// Create the A: drive whether it is mounted or not
FileSystemRoot floppy = new FileSystemRoot("A" + ":" + "\\");
rootsVector.addElement(floppy);
// Run through all possible mount points and check
// for their existance.
for (char c = 'C'; c <= 'Z'; c++) {
char device[] = {c, ':', '\\'};
String deviceName = new String(device);
File deviceFile = new FileSystemRoot(deviceName);
if (deviceFile != null && deviceFile.exists()) {
rootsVector.addElement(deviceFile);
}
}
roots = new File[rootsVector.size()];
rootsVector.copyInto(roots);
} else {
roots = File.listRoots();
}
}
}
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