/**
* Copyright (c) 2012, University of Konstanz, Distributed Systems Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the University of Konstanz nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jscsi.utils;
import java.nio.ByteBuffer;
import org.jscsi.parser.Constants;
/**
* This class parses a given byte representation (in hexadecimal numbers) of an
* ethereal trace log into an integer array.
*
* @author Volker Wildi
*/
public final class WiresharkMessageParser {
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
/** The radix of hexadecimal numbers. */
private static final int HEX_RADIX = 16;
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
/**
* To disable the creation of such an object, declare the constructor as
* private.
*/
private WiresharkMessageParser() {
}
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
/**
* Parses a given iSCSI message from wireshark to an integer array.
*
* @param str
* The given iSCSI message from wireshark
* @return The parsed integer array
*/
public static int[] parseToIntArray(final String str) {
final String[] tokens = str.trim().split(" ");
final int n = tokens.length;
final int[] numbers = new int[n / Constants.BYTES_PER_INT];
for (int i = 0; i < n; i++) {
numbers[i / Constants.BYTES_PER_INT] <<= Constants.ONE_BYTE_SHIFT;
numbers[i / Constants.BYTES_PER_INT] |= Integer.parseInt(tokens[i], HEX_RADIX);
}
return numbers;
}
/**
* Parses a given iSCSI message from wireshark to a <code>ByteBuffer</code>.
*
* @param str
* The given iSCSI message from wireshark
* @return The parsed integer array
*/
public static ByteBuffer parseToByteBuffer(final String str) {
final String[] tokens = str.trim().split(" ");
int n = tokens.length;
if (str.equals("")) {
n--;
}
final ByteBuffer numbers = ByteBuffer.allocate(n);
short val = 0;
for (int i = 0; i < n; i++) {
val = Short.parseShort(tokens[i], HEX_RADIX);
numbers.put((byte)val);
}
numbers.rewind();
return numbers;
}
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
}