+++ /dev/null
-package org.openflow.codec.util;
-
-import java.math.BigInteger;
-
-import org.openflow.codec.io.IDataBuffer;
-
-/*****
- * A util library class for dealing with the lack of unsigned datatypes in Java
- *
- * @author Rob Sherwood (rob.sherwood@stanford.edu)
- * @author David Erickson (daviderickson@cs.stanford.edu)
- */
-
-public class Unsigned {
- /**
- * Get an unsigned byte from the current position of the IDataBuffer
- *
- * @param bb
- * IDataBuffer to get the byte from
- * @return an unsigned byte contained in a short
- */
- public static short getUnsignedByte(IDataBuffer bb) {
- return ((short) (bb.get() & (short) 0xff));
- }
-
- /**
- * Get an unsigned byte from the specified offset in the IDataBuffer
- *
- * @param bb
- * IDataBuffer to get the byte from
- * @param offset
- * the offset to get the byte from
- * @return an unsigned byte contained in a short
- */
- public static short getUnsignedByte(IDataBuffer bb, int offset) {
- return ((short) (bb.get(offset) & (short) 0xff));
- }
-
- /**
- * Put an unsigned byte into the specified IDataBuffer at the current
- * position
- *
- * @param bb
- * IDataBuffer to put the byte into
- * @param v
- * the short containing the unsigned byte
- */
- public static void putUnsignedByte(IDataBuffer bb, short v) {
- bb.put((byte) (v & 0xff));
- }
-
- /**
- * Put an unsigned byte into the specified IDataBuffer at the specified
- * offset
- *
- * @param bb
- * IDataBuffer to put the byte into
- * @param v
- * the short containing the unsigned byte
- * @param offset
- * the offset to insert the unsigned byte at
- */
- public static void putUnsignedByte(IDataBuffer bb, short v, int offset) {
- bb.put(offset, (byte) (v & 0xff));
- }
-
- /**
- * Get an unsigned short from the current position of the IDataBuffer
- *
- * @param bb
- * IDataBuffer to get the byte from
- * @return an unsigned short contained in a int
- */
- public static int getUnsignedShort(IDataBuffer bb) {
- return (bb.getShort() & 0xffff);
- }
-
- /**
- * Get an unsigned short from the specified offset in the IDataBuffer
- *
- * @param bb
- * IDataBuffer to get the short from
- * @param offset
- * the offset to get the short from
- * @return an unsigned short contained in a int
- */
- public static int getUnsignedShort(IDataBuffer bb, int offset) {
- return (bb.getShort(offset) & 0xffff);
- }
-
- /**
- * Put an unsigned short into the specified IDataBuffer at the current
- * position
- *
- * @param bb
- * IDataBuffer to put the short into
- * @param v
- * the int containing the unsigned short
- */
- public static void putUnsignedShort(IDataBuffer bb, int v) {
- bb.putShort((short) (v & 0xffff));
- }
-
- /**
- * Put an unsigned short into the specified IDataBuffer at the specified
- * offset
- *
- * @param bb
- * IDataBuffer to put the short into
- * @param v
- * the int containing the unsigned short
- * @param offset
- * the offset to insert the unsigned short at
- */
- public static void putUnsignedShort(IDataBuffer bb, int v, int offset) {
- bb.putShort(offset, (short) (v & 0xffff));
- }
-
- /**
- * Get an unsigned int from the current position of the IDataBuffer
- *
- * @param bb
- * IDataBuffer to get the int from
- * @return an unsigned int contained in a long
- */
- public static long getUnsignedInt(IDataBuffer bb) {
- return ((long) bb.getInt() & 0xffffffffL);
- }
-
- /**
- * Get an unsigned int from the specified offset in the IDataBuffer
- *
- * @param bb
- * IDataBuffer to get the int from
- * @param offset
- * the offset to get the int from
- * @return an unsigned int contained in a long
- */
- public static long getUnsignedInt(IDataBuffer bb, int offset) {
- return ((long) bb.getInt(offset) & 0xffffffffL);
- }
-
- /**
- * Put an unsigned int into the specified IDataBuffer at the current
- * position
- *
- * @param bb
- * IDataBuffer to put the int into
- * @param v
- * the long containing the unsigned int
- */
- public static void putUnsignedInt(IDataBuffer bb, long v) {
- bb.putInt((int) (v & 0xffffffffL));
- }
-
- /**
- * Put an unsigned int into the specified IDataBuffer at the specified
- * offset
- *
- * @param bb
- * IDataBuffer to put the int into
- * @param v
- * the long containing the unsigned int
- * @param offset
- * the offset to insert the unsigned int at
- */
- public static void putUnsignedInt(IDataBuffer bb, long v, int offset) {
- bb.putInt(offset, (int) (v & 0xffffffffL));
- }
-
- /**
- * Get an unsigned long from the current position of the IDataBuffer
- *
- * @param bb
- * IDataBuffer to get the long from
- * @return an unsigned long contained in a BigInteger
- */
- public static BigInteger getUnsignedLong(IDataBuffer bb) {
- byte[] v = new byte[8];
- for (int i = 0; i < 8; ++i) {
- v[i] = bb.get(i);
- }
- return new BigInteger(1, v);
- }
-
- /**
- * Get an unsigned long from the specified offset in the IDataBuffer
- *
- * @param bb
- * IDataBuffer to get the long from
- * @param offset
- * the offset to get the long from
- * @return an unsigned long contained in a BigInteger
- */
- public static BigInteger getUnsignedLong(IDataBuffer bb, int offset) {
- byte[] v = new byte[8];
- for (int i = 0; i < 8; ++i) {
- v[i] = bb.get(offset + i);
- }
- return new BigInteger(1, v);
- }
-
- /**
- * Put an unsigned long into the specified IDataBuffer at the current
- * position
- *
- * @param bb
- * IDataBuffer to put the long into
- * @param v
- * the BigInteger containing the unsigned long
- */
- public static void putUnsignedLong(IDataBuffer bb, BigInteger v) {
- bb.putLong(v.longValue());
- }
-
- /**
- * Put an unsigned long into the specified IDataBuffer at the specified
- * offset
- *
- * @param bb
- * IDataBuffer to put the long into
- * @param v
- * the BigInteger containing the unsigned long
- * @param offset
- * the offset to insert the unsigned long at
- */
- public static void putUnsignedLong(IDataBuffer bb, BigInteger v, int offset) {
- bb.putLong(offset, v.longValue());
- }
-}
Code Review / openflowjava.git / blobdiff