| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| |
| using System; |
| |
| namespace org.apache.qpid.transport.util |
| { |
| public class UUID |
| { |
| private long _mostSigBits; |
| private long _leastSigBits; |
| private static readonly Random _random = new Random(); |
| private static readonly object _randomLock = new object(); |
| |
| |
| public UUID(long mostSigBits, long leastSigBits) |
| { |
| _mostSigBits = mostSigBits; |
| _leastSigBits = leastSigBits; |
| } |
| |
| public long MostSignificantBits |
| { |
| get { return _mostSigBits; } |
| set { _mostSigBits = value; } |
| } |
| |
| public long LeastSignificantBits |
| { |
| get { return _leastSigBits; } |
| set { _leastSigBits = value; } |
| } |
| |
| internal UUID(byte[] r) |
| { |
| MostSignificantBits = 0; |
| LeastSignificantBits = 0; |
| for (int i = 0; i < 8; i++) |
| MostSignificantBits = (MostSignificantBits << 8) | (r[i] & 0xff); |
| for (int i = 8; i < 16; i++) |
| LeastSignificantBits = (LeastSignificantBits << 8) | (r[i] & 0xff); |
| } |
| |
| public static UUID RandomUuid() |
| { |
| byte[] randomBytes = new byte[16]; |
| lock (_randomLock) |
| { |
| _random.NextBytes(randomBytes); |
| } |
| |
| randomBytes[6] &= 0x0f; |
| randomBytes[6] |= 0x40; |
| randomBytes[8] &= 0x3f; |
| randomBytes[8] |= 0x80; |
| |
| return new UUID(randomBytes); |
| } |
| |
| |
| public override String ToString() |
| { |
| return (Digits(_mostSigBits >> 32, 8) + "-" + |
| Digits(_mostSigBits >> 16, 4) + "-" + |
| Digits(_mostSigBits, 4) + "-" + |
| Digits(_leastSigBits >> 48, 4) + "-" + |
| Digits(_leastSigBits, 12)); |
| } |
| |
| private static String Digits(long val, int digits) |
| { |
| long hi = 1L << (digits * 4); |
| return Convert.ToString((hi | (val & (hi - 1))), 16); |
| } |
| |
| #region equality |
| public bool Equals(UUID other) |
| { |
| if (ReferenceEquals(null, other)) return false; |
| if (ReferenceEquals(this, other)) return true; |
| return other._mostSigBits == _mostSigBits && other._leastSigBits == _leastSigBits; |
| } |
| |
| public override bool Equals(object obj) |
| { |
| if (ReferenceEquals(null, obj)) return false; |
| if (ReferenceEquals(this, obj)) return true; |
| if (obj.GetType() != typeof (UUID)) return false; |
| return Equals((UUID) obj); |
| } |
| |
| public override int GetHashCode() |
| { |
| unchecked |
| { |
| return (_mostSigBits.GetHashCode()*397) ^ _leastSigBits.GetHashCode(); |
| } |
| } |
| |
| public static bool operator ==(UUID left, UUID right) |
| { |
| return Equals(left, right); |
| } |
| |
| public static bool operator !=(UUID left, UUID right) |
| { |
| return !Equals(left, right); |
| } |
| #endregion |
| } |
| } |