/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.fs.ext2;
import java.nio.ByteBuffer;
import org.apache.log4j.Logger;
import org.jnode.driver.block.BlockDeviceAPI;
/**
* @author Andras Nagy
*/
public class Ext2Print {
private static final Logger log = Logger.getLogger("EXT2");
public static String hexFormat(int i) {
String pad = "00000000";
String res = Integer.toHexString(i);
int len = Math.max(0, 8 - res.length());
res = pad.substring(0, len) + res;
return res;
}
private static int unsignedByte(byte i) {
if (i < 0)
return 256 + i;
else
return i;
}
public static String hexFormat(byte b) {
int i = unsignedByte(b);
String pad = "00";
String res = Integer.toHexString(i);
int len = Math.max(0, 2 - res.length());
res = pad.substring(0, len) + res;
return res;
}
public static void dumpData(BlockDeviceAPI api, int offset, int length) {
byte[] data = new byte[length];
try {
api.read(offset, ByteBuffer.wrap(data));
} catch (Exception e) {
return;
}
int pageWidth = 16;
for (int i = 0; i < length; i += pageWidth) {
System.out.print(hexFormat(i) + ": ");
for (int j = 0; j < pageWidth; j++)
if (i + j < length) {
log.info(hexFormat(data[i + j]) + " ");
if ((i + j) % 4 == 3)
System.out.print(" - ");
}
System.out.println();
}
}
}